<?php
/**
 * Plugin Name: WP Rankify (AI Auto Embed)
 * Plugin URI: https://wprankify.de
 * Description: Warum rankt dein Artikel nicht? WP Rankify zeigt es dir – mit einem gewichteten AI Readiness Score, konkreten Verbesserungshinweisen und automatischem Schema.org-Markup direkt im Editor. Kostenlos. Kein API-Key.
 * Version: 1.3.8
 * Author: Münch Media
 * Author URI: https://profiles.wordpress.org/muenchmedia/
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Requires at least: 5.2
 * Requires PHP: 7.2
 * Text Domain: ai-json-extractor-auto-embed-lite
 */

if (!defined('ABSPATH')) { exit; }

/* -------- Aktivierung: Zeitstempel speichern (für spätere Lizenz-/Quota-Logik) -------- */
register_activation_hook(__FILE__, function () {
    if (!get_option('aije_activated_at')) {
        update_option('aije_activated_at', time(), false);
    }
    // llms.txt Rewrite-Rule sofort registrieren
    add_rewrite_rule( '^llms\.txt$', 'index.php?aije_llms=1', 'top' );
    flush_rewrite_rules();
});

/* -------- Deaktivierung: Notice-Status zurücksetzen -------- */
register_uninstall_hook(__FILE__, 'aije_on_uninstall');
function aije_on_uninstall() {
    $pv = defined('AIJE_PLUGIN_VERSION') ? AIJE_PLUGIN_VERSION : '1.3.7';
    wp_remote_post( 'https://www.muench-media.com/aije-stats/heartbeat', array(
        'timeout'   => 5,
        'headers'   => array( 'Content-Type' => 'application/json' ),
        'body'      => wp_json_encode( array(
            'secret'         => hash( 'sha256', home_url() . '1111111' ),
            'site_url'       => home_url(),
            'plugin_version' => $pv,
            'event'          => 'uninstalled',
        ) ),
        'blocking'  => true,
        'sslverify' => true,
    ) );
}

register_deactivation_hook(__FILE__, function () {
    delete_option('aije_stats_notice_dismissed');
    delete_option('aije_first_ping_sent');
    delete_option('aije_last_heartbeat');
    // Dashboard informieren
    $pv = defined('AIJE_PLUGIN_VERSION') ? AIJE_PLUGIN_VERSION : '1.3.7';
    $payload = array(
        'secret'         => hash( 'sha256', home_url() . '1111111' ),
        'site_url'       => home_url(),
        'plugin_version' => $pv,
        'event'          => 'deactivated',
    );
    wp_remote_post( 'https://www.muench-media.com/aije-stats/heartbeat', array(
        'timeout'   => 5,
        'headers'   => array( 'Content-Type' => 'application/json' ),
        'body'      => wp_json_encode( $payload ),
        'blocking'  => true,
        'sslverify' => true,
    ) );
});

/* -------- Guard: keine Doppel-Loads -------- */
if (defined('AIJE_LITE_1_0_0')) {
    return;
}
define('AIJE_LITE_1_0_0', true);

/* -------- Aktivierungs-Check -------- */
register_activation_hook(__FILE__, function () {
    global $wp_version;
    if (version_compare(PHP_VERSION, '7.2', '<')) {
        deactivate_plugins(plugin_basename(__FILE__));
        wp_die(esc_html__('AI AUTO EMBED benötigt mindestens PHP 7.2.', 'ai-json-extractor-auto-embed-lite'));
    }
    if (!isset($wp_version) || version_compare($wp_version, '5.2', '<')) {
        deactivate_plugins(plugin_basename(__FILE__));
        wp_die(esc_html__('AI AUTO EMBED benötigt mindestens WordPress 5.2.', 'ai-json-extractor-auto-embed-lite'));
    }
});

/* -------- Aktivierung: optionaler Ping an eigenen Endpoint -------- */
register_activation_hook(__FILE__, function () {
    $payload = array(
        'event'       => 'plugin_activation',
        'site_name'   => get_bloginfo('name'),
        'site_url'    => home_url(),
        'admin_email' => get_option('admin_email'),
        'php_version'    => PHP_VERSION,
        'wp_version'     => get_bloginfo('version'),
        'plugin_version' => AIJE_PLUGIN_VERSION,
        'secret'         => AIJE_Lite_100::stats_secret(),
        'time'           => date_i18n('c'),
    );
    $args = array(
        'method'      => 'POST',
        'timeout'     => 8,
        'redirection' => 5,
        'headers'     => array('Content-Type' => 'application/json'),
        'body'        => wp_json_encode($payload),
        'sslverify'   => true,
    );
    $endpoint = AIJE_Lite_100::STATS_ENDPOINT . 'activate';
    @wp_remote_post($endpoint, $args);
});

/* -------- Plugin-Update: Heartbeat sofort senden (kein Deaktivieren nötig) -------- */
add_action('upgrader_process_complete', function( $upgrader, $options ) {
    if (
        $options['action'] === 'update' &&
        $options['type']   === 'plugin' &&
        isset( $options['plugins'] )
    ) {
        foreach ( (array) $options['plugins'] as $plugin ) {
            if ( strpos( $plugin, 'ai-json-extractor-auto-embed' ) !== false ) {
                // Plugin wurde gerade aktualisiert → sofort Heartbeat senden
                $instance = new AIJE_Lite_100();
                // Boot nicht nötig – direkt heartbeat
                // Sperre zurücksetzen damit sofort neuer Heartbeat mit neuer Version gesendet wird
                delete_option( 'aije_last_heartbeat' );
                if ( method_exists( $instance, 'cron_heartbeat_runner' ) ) {
                    delete_option( 'aije_last_heartbeat' ); // Cache löschen → sofortiger Heartbeat mit neuer Version
                    $instance->cron_heartbeat_runner();
                }
                break;
            }
        }
    }
}, 10, 2);

/* -------- Admin-Init: Einmalig Heartbeat senden wenn noch kein Heartbeat -------- */
add_action('admin_init', function() {
    // Ersten Aktivierungs-Ping senden (einmalig, unabhängig vom Opt-out)
    // Danach übernimmt der wöchentliche Heartbeat (nur bei Opt-in)
    if ( ! get_option('aije_first_ping_sent') ) {
        if ( ! wp_next_scheduled('aije_first_heartbeat') ) {
            wp_schedule_single_event( time() + 5, 'aije_first_heartbeat' );
        }
    }
});
add_action('aije_first_heartbeat', function() {
    // Ersten Ping IMMER senden – zählt die Installation
    // Klasse ist zur Laufzeit geladen, daher kein Problem
    update_option('aije_first_ping_sent', time(), false);
    update_option('aije_last_heartbeat',  time(), false);

    if ( class_exists('AIJE_Lite_100') ) {
        $instance = new AIJE_Lite_100();
        $instance->send_first_ping();
    }
});

define( 'AIJE_PLUGIN_VERSION', '1.3.7' );

if (!class_exists('AIJE_Lite_100')) :

class AIJE_Lite_100 {

    const OPT_KEY         = 'aije_pro_opts';
    const OPT_LICENSE     = 'aije_license_code';
    const META_NO_EMBED   = '_aije_no_embed';
    const EXPORT_DIR      = 'ai-json-exports';
    const LOG_FILE        = 'ai-json-export-log.csv';
    const CRON_EXPORT     = 'aije_pro_cron_export';
    const CRON_PING       = 'aije_pro_cron_ping';
    const PING_QUEUE_OPT  = 'aije_pro_ping_queue';
    const PING_ERRORS_OPT = 'aije_pro_last_ping_errors';
    const LAST_ARGS_OPT   = 'aije_pro_last_export';
    const BRAND_LOGO_URL  = 'https://www.muench-media.com/img/MMLogo.jpg';
    const STATS_SALT      = '1111111'; // Salt – kein direkter Secret, sicher im Code
    const STATS_ENDPOINT  = 'https://www.muench-media.com/aije-stats/';
    const AI_PROXY_URL    = 'https://www.muench-media.com/aije-proxy/'; // KI-Proxy
    const CRON_HEARTBEAT  = 'aije_pro_cron_heartbeat';
    const OPT_STATS_OPTOUT = 'aije_stats_optout'; // 1 = Nutzer hat Telemetrie deaktiviert
    const TRIAL_DAYS      = 14;

    // =========================================================================
    // NEU: Konstanten für Experten-Profil User-Meta-Keys
    // =========================================================================
    const USER_META_JOB_TITLE  = 'aije_job_title';
    const USER_META_EXPERTISE  = 'aije_expertise';
    const USER_META_WEBSITE    = 'aije_expert_website';
    const USER_META_SAME_AS    = 'aije_same_as_links';

    public function __construct() {
        add_action('plugins_loaded', array($this, 'boot'), 20);
    }

    // =========================================================================
    // NEU: Experten-Profil – Felder im WordPress-Backend registrieren
    // =========================================================================

    /**
     * Felder zum Benutzerprofil hinzufügen (Anzeige).
     */
    public function add_expert_profile_fields($user) {
        $job_title = get_user_meta($user->ID, self::USER_META_JOB_TITLE, true);
        $expertise = get_user_meta($user->ID, self::USER_META_EXPERTISE, true);
        $website   = get_user_meta($user->ID, self::USER_META_WEBSITE, true);
        $same_as   = get_user_meta($user->ID, self::USER_META_SAME_AS, true);
        ?>
        <h2><?php esc_html_e('Experten-Profil (AI Auto Embed / Schema.org)', 'ai-json-extractor-auto-embed-lite'); ?></h2>
        <p class="description" style="margin-bottom:16px;">
            <?php esc_html_e('Diese Daten werden als strukturiertes JSON-LD (Schema.org Person) in den Kopfbereich deiner Beiträge eingefügt und verbessern E-E-A-T-Signale für Google.', 'ai-json-extractor-auto-embed-lite'); ?>
        </p>
        <table class="form-table">
            <tr>
                <th>
                    <label for="<?php echo esc_attr(self::USER_META_JOB_TITLE); ?>">
                        <?php esc_html_e('Berufsbezeichnung (Job Title)', 'ai-json-extractor-auto-embed-lite'); ?>
                    </label>
                </th>
                <td>
                    <input
                        type="text"
                        name="<?php echo esc_attr(self::USER_META_JOB_TITLE); ?>"
                        id="<?php echo esc_attr(self::USER_META_JOB_TITLE); ?>"
                        value="<?php echo esc_attr($job_title); ?>"
                        class="regular-text"
                        placeholder="<?php esc_attr_e('z.B. Staatlich geprüfte Hebamme', 'ai-json-extractor-auto-embed-lite'); ?>"
                    />
                    <p class="description">
                        <?php esc_html_e('Wird als jobTitle im Schema.org Person-Typ ausgegeben.', 'ai-json-extractor-auto-embed-lite'); ?>
                    </p>
                </td>
            </tr>
            <tr>
                <th>
                    <label for="<?php echo esc_attr(self::USER_META_EXPERTISE); ?>">
                        <?php esc_html_e('Fachbiografie / Expertise', 'ai-json-extractor-auto-embed-lite'); ?>
                    </label>
                </th>
                <td>
                    <textarea
                        name="<?php echo esc_attr(self::USER_META_EXPERTISE); ?>"
                        id="<?php echo esc_attr(self::USER_META_EXPERTISE); ?>"
                        rows="4"
                        class="large-text"
                        placeholder="<?php esc_attr_e('Kurze Fachbiografie, z.B.: 12 Jahre Erfahrung als Hebamme in München, Spezialisierung auf natürliche Geburt …', 'ai-json-extractor-auto-embed-lite'); ?>"
                    ><?php echo esc_textarea($expertise); ?></textarea>
                    <p class="description">
                        <?php esc_html_e('Wird als description im Schema.org Person-Typ ausgegeben.', 'ai-json-extractor-auto-embed-lite'); ?>
                    </p>
                </td>
            </tr>
            <tr>
                <th>
                    <label for="<?php echo esc_attr(self::USER_META_WEBSITE); ?>">
                        <?php esc_html_e('Praxis-/Experten-Website', 'ai-json-extractor-auto-embed-lite'); ?>
                    </label>
                </th>
                <td>
                    <input
                        type="url"
                        name="<?php echo esc_attr(self::USER_META_WEBSITE); ?>"
                        id="<?php echo esc_attr(self::USER_META_WEBSITE); ?>"
                        value="<?php echo esc_attr($website); ?>"
                        class="regular-text"
                        placeholder="https://meine-praxis.de"
                    />
                    <p class="description">
                        <?php esc_html_e('Wird als url im Schema.org Person-Typ ausgegeben. Leer lassen = WordPress-Profilseite wird verwendet.', 'ai-json-extractor-auto-embed-lite'); ?>
                    </p>
                </td>
            </tr>
            <tr>
                <th>
                    <label for="<?php echo esc_attr(self::USER_META_SAME_AS); ?>">
                        <?php esc_html_e('SameAs-Links (Social Media / Profilseiten)', 'ai-json-extractor-auto-embed-lite'); ?>
                    </label>
                </th>
                <td>
                    <textarea
                        name="<?php echo esc_attr(self::USER_META_SAME_AS); ?>"
                        id="<?php echo esc_attr(self::USER_META_SAME_AS); ?>"
                        rows="5"
                        class="large-text"
                        placeholder="https://www.instagram.com/meinprofil&#10;https://www.linkedin.com/in/meinprofil&#10;https://www.xing.com/profile/MeinProfil"
                    ><?php echo esc_textarea($same_as); ?></textarea>
                    <p class="description">
                        <?php esc_html_e('Eine URL pro Zeile. Kommentarzeilen mit # werden ignoriert. Wird als sameAs-Array im Schema.org Person-Typ ausgegeben.', 'ai-json-extractor-auto-embed-lite'); ?>
                    </p>
                </td>
            </tr>
        </table>
        <?php
    }

    /**
     * Experten-Profil-Felder beim Speichern des Profils sichern.
     */
    public function save_expert_profile_fields($user_id) {
        if (!current_user_can('edit_user', $user_id)) {
            return;
        }

        // Job Title
        if (isset($_POST[self::USER_META_JOB_TITLE])) {
            update_user_meta(
                $user_id,
                self::USER_META_JOB_TITLE,
                sanitize_text_field(wp_unslash($_POST[self::USER_META_JOB_TITLE]))
            );
        }

        // Expertise / Biografie
        if (isset($_POST[self::USER_META_EXPERTISE])) {
            update_user_meta(
                $user_id,
                self::USER_META_EXPERTISE,
                sanitize_textarea_field(wp_unslash($_POST[self::USER_META_EXPERTISE]))
            );
        }

        // Praxis-Website
        if (isset($_POST[self::USER_META_WEBSITE])) {
            $url = esc_url_raw(wp_unslash($_POST[self::USER_META_WEBSITE]));
            update_user_meta($user_id, self::USER_META_WEBSITE, $url);
        }

        // SameAs-Links (mehrzeilig, eine URL pro Zeile)
        if (isset($_POST[self::USER_META_SAME_AS])) {
            // Rohtext speichern; Bereinigung erfolgt bei der Ausgabe
            update_user_meta(
                $user_id,
                self::USER_META_SAME_AS,
                sanitize_textarea_field(wp_unslash($_POST[self::USER_META_SAME_AS]))
            );
        }
    }

    // =========================================================================
    // NEU: Schema.org Person-Daten für einen Autor aufbauen
    // =========================================================================

    /**
     * Gibt ein sauberes PHP-Array mit Person-Schema-Daten zurück.
     *
     * @param  int  $author_id  WordPress-User-ID
     * @return array|null       Schema.org Person-Array oder null wenn keine Daten
     */
    private function build_person_schema($author_id) {
        $user = get_userdata($author_id);
        if (!$user) {
            return null;
        }

        $job_title  = get_user_meta($author_id, self::USER_META_JOB_TITLE, true);
        $expertise  = get_user_meta($author_id, self::USER_META_EXPERTISE, true);
        $website    = get_user_meta($author_id, self::USER_META_WEBSITE, true);
        $same_as_raw = get_user_meta($author_id, self::USER_META_SAME_AS, true);

        // SameAs: zeilenweise parsen, Kommentare & Leerzeilen entfernen, URLs validieren
        $same_as_urls = array();
        if (!empty($same_as_raw)) {
            $lines = preg_split("/\r\n|\n|\r/", $same_as_raw);
            foreach ($lines as $line) {
                $line = trim($line);
                if ($line === '' || substr($line, 0, 1) === '#') {
                    continue;
                }
                $clean = esc_url_raw($line);
                if ($clean !== '') {
                    $same_as_urls[] = $clean;
                }
            }
        }

        // Fallback-URL: WordPress-Autoren-Archivseite
        $author_url = !empty($website) ? $website : get_author_posts_url($author_id);

        $person = array(
            '@type' => 'Person',
            'name'  => $user->display_name,
            'url'   => $author_url,
        );

        if (!empty($job_title)) {
            $person['jobTitle'] = $job_title;
        }

        if (!empty($expertise)) {
            $person['description'] = $expertise;
        }

        if (!empty($same_as_urls)) {
            $person['sameAs'] = $same_as_urls;
        }

        return $person;
    }

    // =========================================================================
    // NEU: Person-JSON-LD im <head> ausgeben (für Singular-Views)
    // =========================================================================

    /**
     * Gibt das @type Person JSON-LD Script-Tag im <head> aus.
     * Wird NUR auf Einzelbeitragsseiten aktiver Post-Typen geladen.
     */
    /**
     * Gibt die AIJE-eigene Meta-Description aus – nur wenn kein SEO-Plugin aktiv ist
     * und eine Meta unter _aije_metadesc gespeichert wurde.
     */
    public function output_tracking_head() {
        $opts       = $this->get_opts();
        $gtm_id     = trim( $opts['gtm_id']     ?? '' );
        $ga4_id     = trim( $opts['ga4_id']     ?? '' );
        $gsc_verify = trim( $opts['gsc_verify'] ?? '' );

        if ( $gsc_verify ) {
            $code = str_replace( 'google-site-verification=', '', $gsc_verify );
            echo '<meta name="google-site-verification" content="' . esc_attr( trim($code) ) . '">' . "
";
        }

        if ( $gtm_id ) {
            echo "<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','" . esc_js($gtm_id) . "');</script>
<!-- End Google Tag Manager -->
";
        }

        if ( $ga4_id && ! $gtm_id ) {
            echo '<script async src="https://www.googletagmanager.com/gtag/js?id=' . esc_attr($ga4_id) . '"></script>' . "\n";
            echo '<script>window.dataLayer=window.dataLayer||[];function gtag(){dataLayer.push(arguments);}gtag("js",new Date());gtag("config","' . esc_js($ga4_id) . '");</script>' . "\n";
        }

        // Meta Pixel
        $meta_pixel = trim( $opts['meta_pixel'] ?? '' );
        if ( $meta_pixel ) {
            echo "<!-- Meta Pixel Code -->\n";
            echo '<script>!function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod?n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version=\'2.0\';n.queue=[];t=b.createElement(e);t.async=!0;t.src=v;s=b.getElementsByTagName(e)[0];s.parentNode.insertBefore(t,s)}(window,document,\'script\',\'https://connect.facebook.net/en_US/fbevents.js\');fbq(\'init\',' . json_encode($meta_pixel) . ');fbq(\'track\',\'PageView\');</script>' . "\n";
            echo '<noscript><img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=' . esc_attr($meta_pixel) . '&ev=PageView&noscript=1" /></noscript>' . "\n";
            echo "<!-- End Meta Pixel Code -->\n";
        }
    }

    public function output_aije_meta_description() {
        if ( ! is_singular() ) { return; }
        global $post;
        if ( empty($post) ) { return; }

        $seo = $this->get_active_seo_plugin();
        if ( $seo !== 'own' ) { return; } // Anderes Plugin übernimmt

        // SEO-Titel
        $seo_title = get_post_meta( $post->ID, '_aije_seo_title', true );
        if ( ! empty($seo_title) ) {
            // wp_head liefert <title> nur wenn Theme add_theme_support('title-tag') hat
            // Wir ersetzen per Filter
            add_filter( 'pre_get_document_title', function() use ($seo_title) {
                return esc_html($seo_title);
            });
        }

        // Meta-Description
        $meta = get_post_meta( $post->ID, '_aije_metadesc', true );
        if ( ! empty($meta) ) {
            echo '<meta name="description" content="' . esc_attr( $meta ) . '">' . "\n";
        }

        // Robots
        $robots = get_post_meta( $post->ID, '_aije_robots', true );
        if ( ! empty($robots) && $robots !== 'index,follow' ) {
            echo '<meta name="robots" content="' . esc_attr( $robots ) . '">' . "\n";
        }

        // Canonical
        $canonical = get_post_meta( $post->ID, '_aije_canonical', true );
        if ( ! empty($canonical) ) {
            echo '<link rel="canonical" href="' . esc_url( $canonical ) . '">' . "\n";
        }
    }

    public function output_person_schema_in_head() {
        if (!is_singular()) {
            return;
        }

        global $post;
        if (empty($post) || !is_object($post)) {
            return;
        }

        $o = $this->get_opts();
        if (!in_array($post->post_type, $o['enabled_post_types'], true)) {
            return;
        }

        // Opt-out per Beitrag respektieren
        if (get_post_meta($post->ID, self::META_NO_EMBED, true)) {
            return;
        }

        $person = $this->build_person_schema($post->post_author);
        if (empty($person)) {
            return;
        }

        // Vollständiges @graph-Dokument: Person + Article verknüpft
        $article_url = get_permalink($post);

        $graph = array(
            '@context' => 'https://schema.org',
            '@graph'   => array(
                // Person-Knoten
                $person,
                // Article-Knoten mit author-Verknüpfung
                array(
                    '@type'      => 'Article',
                    'url'        => $article_url,
                    'headline'   => wp_strip_all_tags(get_the_title($post)),
                    'datePublished' => get_post_time('c', true, $post),
                    'dateModified'  => get_post_modified_time('c', true, $post),
                    'author'     => array(
                        '@type' => 'Person',
                        'name'  => $person['name'],
                        'url'   => $person['url'],
                    ),
                    // reviewedBy zeigt auf denselben Experten (nützlich für medizinische / beratende Inhalte)
                    'reviewedBy' => array(
                        '@type'    => 'Person',
                        'name'     => $person['name'],
                        'url'      => $person['url'],
                        'jobTitle' => isset($person['jobTitle']) ? $person['jobTitle'] : '',
                    ),
                    'publisher'  => array(
                        '@type' => 'Organization',
                        'name'  => get_bloginfo('name'),
                        'url'   => home_url(),
                    ),
                ),
            ),
        );

        $flags = 0;
        if (defined('JSON_UNESCAPED_UNICODE'))  { $flags |= JSON_UNESCAPED_UNICODE; }
        if (defined('JSON_UNESCAPED_SLASHES'))  { $flags |= JSON_UNESCAPED_SLASHES; }
        if (defined('JSON_PRETTY_PRINT'))       { $flags |= JSON_PRETTY_PRINT; }

        $json = function_exists('wp_json_encode')
            ? wp_json_encode($graph, $flags)
            : json_encode($graph, $flags);

        echo "\n<!-- AI Auto Embed: Person + Article Schema.org JSON-LD -->\n";
        echo '<script type="application/ld+json" id="aije-person-schema">' . "\n";
        echo $json . "\n";
        echo '</script>' . "\n";
    }

    // =========================================================================
    // NEU: Person-Daten auch im JSON-Embed (auto_embed) mitliefern
    // =========================================================================

    /**
     * Gibt ein sauberes Array mit den Experten-Profil-Feldern zurück –
     * wird von extract_payload() eingebunden.
     */
    private function get_author_expert_data($author_id) {
        $person = $this->build_person_schema($author_id);
        if (empty($person)) {
            return array();
        }
        return $person;
    }

    // =========================================================================
    // OpenAI-Integration (in Vorbereitung)
    // =========================================================================

    private function call_openai($content, $api_key, $prompt = '') {

        $endpoint = 'https://api.openai.com/v1/responses';

        $system_prompt = !empty($prompt)
            ? $prompt
            : 'Default Prompt...';

        $payload = array(
            "model" => "gpt-4.1-mini",
            "input" => array(
                array(
                    "role"    => "system",
                    "content" => $system_prompt,
                ),
                array(
                    "role"    => "user",
                    "content" => $content,
                ),
            ),
        );

        $response = wp_remote_post($endpoint, array(
            'headers' => array(
                'Authorization' => 'Bearer ' . $api_key,
                'Content-Type'  => 'application/json',
            ),
            'body'    => wp_json_encode($payload),
            'timeout' => 45,
        ));

        if (is_wp_error($response)) {
            return array('error' => $response->get_error_message());
        }

        $body = json_decode(wp_remote_retrieve_body($response), true);

        if (isset($body['error'])) {
            return array(
                'error' => is_array($body['error'])
                    ? ($body['error']['message'] ?? 'Unbekannter API Fehler')
                    : $body['error'],
            );
        }

        if (!empty($body['output_text'])) {
            $json = trim($body['output_text']);
            if (preg_match('/\{.*\}/s', $json, $match)) {
                $json = $match[0];
            }
            $parsed = json_decode($json, true);
            if (is_array($parsed)) {
                return $parsed;
            }
        }

        if (isset($body['output']) && is_array($body['output'])) {
            foreach ($body['output'] as $item) {
                if (!empty($item['content'])) {
                    foreach ($item['content'] as $block) {
                        if (!empty($block['text'])) {
                            $json = trim($block['text']);
                            if (preg_match('/\{.*\}/s', $json, $match)) {
                                $json = $match[0];
                            }
                            $parsed = json_decode($json, true);
                            if (is_array($parsed)) {
                                return $parsed;
                            }
                        }
                    }
                }
            }
        }

        return array('error' => 'Antwort konnte nicht als JSON interpretiert werden');
    }


    /**
     * AJAX-Handler: Link in Beitrag einfügen.
     *
     * Strategie:
     * 1. Keywords aus dem Titel des Ziel-Artikels im post_content suchen
     *    → erstes unverlinktes Vorkommen wird zum Link
     * 2. Kein Keyword gefunden → "Lese auch"-Absatz ans Ende hängen
     *
     * POST: post_id, target_id, nonce
     */
    public function aije_insert_link_handler() {

        check_ajax_referer( 'aije_insert_link', 'nonce' );

        if ( ! current_user_can( 'edit_posts' ) ) {
            wp_send_json_error( array( 'msg' => 'Keine Berechtigung.' ) );
        }

        $post_id   = intval( isset( $_POST['post_id'] )   ? $_POST['post_id']   : 0 );
        $target_id = intval( isset( $_POST['target_id'] ) ? $_POST['target_id'] : 0 );

        if ( ! $post_id || ! $target_id ) {
            wp_send_json_error( array( 'msg' => 'Ungültige Parameter.' ) );
        }

        $post   = get_post( $post_id );
        $target = get_post( $target_id );

        if ( ! $post || ! $target ) {
            wp_send_json_error( array( 'msg' => 'Beitrag nicht gefunden.' ) );
        }

        $content      = $post->post_content;
        $target_url   = get_permalink( $target_id );
        $target_title = get_the_title( $target_id );

        // Keywords aus Ziel-Titel: Stoppwörter entfernen, mind. 5 Zeichen, längste zuerst
        $stopwords = array(
            'der','die','das','den','dem','des','ein','eine','einer','eines',
            'und','oder','aber','wenn','weil','dass','dann','ist','sind',
            'hat','haben','wird','werden','kann','muss','soll','sein','nicht',
            'auch','noch','nur','sehr','mehr','alle','hier','dort','jetzt',
            'mit','von','zu','bei','in','an','auf','aus','nach',
            'the','and','for','with','this','that','are','was','have','not',
            'artikel','beitrag','tipps','hilfe','guide','alles','wissen',
        );
        $title_clean = mb_strtolower( wp_strip_all_tags( $target_title ) );
        $title_words = preg_split( '/\s+/', $title_clean, -1, PREG_SPLIT_NO_EMPTY );
        $keywords    = array_values( array_filter( $title_words, function( $w ) use ( $stopwords ) {
            return mb_strlen( $w ) >= 5 && ! in_array( $w, $stopwords );
        }));
        usort( $keywords, function( $a, $b ) { return mb_strlen( $b ) - mb_strlen( $a ); } );

        // Strategie 1: Spezifisches Keyword aus Ziel-Titel im Text verlinken
        $linked    = false;
        $linked_kw = '';
        $plain     = wp_strip_all_tags( $content );

        // Ersten Absatz und Überschriften aus dem Content herausschneiden
        // damit dort keine Links gesetzt werden
        $content_no_first_p = preg_replace( '/^(\s*<p[^>]*>.*?<\/p>)/is', '___FIRST_P___$1', $content, 1 );
        $work_content = $content_no_first_p;

        foreach ( $keywords as $kw ) {
            if ( stripos( $plain, $kw ) === false ) { continue; }
            $found       = false;
            $new_content = preg_replace_callback(
                '/(<h[1-6][^>]*>.*?<\/h[1-6]>)|(<a\b[^>]*>.*?<\/a>)|(___FIRST_P___<p[^>]*>.*?<\/p>)|(' . preg_quote( $kw, '/' ) . ')/isu',
                function( $m ) use ( $target_url, $target_title, &$found ) {
                    // Überschriften: unverändert lassen
                    if ( ! empty( $m[1] ) ) { return $m[1]; }
                    // Bestehende Links: unverändert lassen
                    if ( ! empty( $m[2] ) ) { return $m[2]; }
                    // Erster Absatz: Platzhalter entfernen, Absatz unverändert lassen
                    if ( ! empty( $m[3] ) ) { return str_replace( '___FIRST_P___', '', $m[3] ); }
                    // Keyword: nur einmal verlinken
                    if ( ! $found ) {
                        $found = true;
                        return '<a href="' . esc_url( $target_url ) . '" title="'
                            . esc_attr( $target_title ) . '">' . $m[4] . '</a>';
                    }
                    return $m[4];
                },
                $work_content
            );
            // Platzhalter entfernen falls Keyword nicht gefunden
            $new_content = str_replace( '___FIRST_P___', '', $new_content );
            if ( $found && $new_content !== $content ) {
                $linked    = true;
                $linked_kw = $kw;
                $content   = $new_content;
                break;
            }
        }
        // Platzhalter sauber entfernen
        $content = str_replace( '___FIRST_P___', '', $content );

        // Strategie 2: Kein Keyword gefunden → "Lese auch"-Absatz
        $method = $linked ? 'keyword' : 'paragraph';
        if ( ! $linked ) {
            $content .= "\n\n" . '<p style="background:#f0f7ff;border-left:4px solid #3498db;'
                . 'padding:12px 16px;border-radius:4px;margin:24px 0;font-size:15px;">'
                . '&#128214; Wenn dich dieses Thema interessiert, lies auch unseren Artikel: '
                . '<a href="' . esc_url( $target_url ) . '"><strong>'
                . esc_html( $target_title ) . '</strong></a></p>';
        }

        // ── Beitrag speichern ─────────────────────────────────────────────────
        // Direkt in die DB schreiben – ohne wp_update_post Hook-Kaskade
        // wp_update_post löst save_post aus was bei AJAX Probleme macht
        global $wpdb;

        $updated = $wpdb->update(
            $wpdb->posts,
            array(
                'post_content'      => $content,
                'post_modified'     => current_time( 'mysql' ),
                'post_modified_gmt' => current_time( 'mysql', 1 ),
            ),
            array( 'ID' => $post_id ),
            array( '%s', '%s', '%s' ),
            array( '%d' )
        );

        // Cache leeren damit der Editor den neuen Stand sieht
        clean_post_cache( $post_id );

        if ( $updated === false ) {
            wp_send_json_error( array(
                'msg'   => 'Datenbankfehler beim Speichern.',
                'debug' => array(
                    'post_id'      => $post_id,
                    'target_id'    => $target_id,
                    'method'       => $method,
                    'linked_kw'    => $linked_kw,
                    'keywords'     => $keywords,
                    'db_error'     => $wpdb->last_error,
                )
            ) );
        }

        $msg = $method === 'keyword'
            ? '&#10003; Link gesetzt! Das Wort &bdquo;' . esc_html( $linked_kw ) . '&ldquo; wurde im Text verlinkt.'
            : '&#10003; &bdquo;Lese auch&ldquo;-Absatz wurde am Ende des Beitrags eingefügt.';

        wp_send_json_success( array(
            'method'      => $method,
            'keyword'     => $linked_kw,
            'msg'         => $msg,
            'new_content' => $content,  // Aktueller Content für Editor-Update
        ) );
    }

    public function aije_ai_analyze_handler() {

        check_ajax_referer('aije_ai_nonce', 'nonce');

        if (!current_user_can('edit_posts')) {
            wp_send_json_error();
        }

        $post_id = intval($_POST['post_id']);
        $post    = get_post($post_id);

        if (!$post) {
            wp_send_json_error();
        }

        $prompt = isset($_POST['prompt'])
            ? sanitize_textarea_field($_POST['prompt'])
            : '';

        $o       = $this->get_opts();
        $api_key = $o['openai_api_key'] ?? '';

        if (!$api_key) {
            wp_send_json_error(array('html' => '<p>Kein API Key hinterlegt.</p>'));
        }

        $content = wp_strip_all_tags($post->post_content);
        $result  = $this->call_openai($content, $api_key, $prompt);

        update_post_meta($post_id, '_aije_ai_analysis', $result);

        wp_send_json_success(array('html' => $this->render_ai_analysis($result)));
    }

    private function render_ai_analysis($result) {

        if (isset($result['error'])) {
            return '<p style="color:red;">API Fehler: ' . esc_html($result['error']) . '</p>';
        }

        $html = '';

        if (!empty($result['overall_score'])) {
            $score = (int) $result['overall_score'];
            $color = $score >= 80 ? '#2ecc71' : ($score >= 50 ? '#f1c40f' : '#e74c3c');
            $html .= '<h3 style="color:' . $color . ';">AI Content Score: ' . $score . '/100</h3>';
        }

        if (!empty($result['issues'])) {
            $html .= '<h4>Verbesserungen</h4><ul>';
            foreach ($result['issues'] as $issue) {
                $html .= '<li>';
                $html .= '<strong>' . esc_html($issue['message']) . '</strong>';
                if (!empty($issue['fix'])) {
                    $html .= '<br><em>→ ' . esc_html($issue['fix']) . '</em>';
                }
                $html .= '</li>';
            }
            $html .= '</ul>';
        }

        if (!empty($result['suggested_headings'])) {
            $html .= '<h4>Neue H2 Vorschläge</h4><ul>';
            foreach ($result['suggested_headings'] as $h2) {
                $html .= '<li>' . esc_html($h2) . '</li>';
            }
            $html .= '</ul>';
        }

        if (!empty($result['faq'])) {
            $html .= '<h4>FAQ Ideen</h4>';
            foreach ($result['faq'] as $faq) {
                $html .= '<p><strong>' . esc_html($faq['question']) . '</strong><br>';
                $html .= esc_html($faq['answer']) . '</p>';
            }
        }

        if (!empty($result['internal_link_ideas'])) {
            $html .= '<h4>Interne Linkideen</h4><ul>';
            foreach ($result['internal_link_ideas'] as $idea) {
                $html .= '<li>' . esc_html($idea) . '</li>';
            }
            $html .= '</ul>';
        }

        if (!empty($result['intro_suggestion'])) {
            $html .= '<h4>Verbesserte Einleitung</h4>';
            $html .= '<p style="background:#f7f7f7;padding:10px;border-radius:6px;">';
            $html .= esc_html($result['intro_suggestion']);
            $html .= '</p>';
        }

        return $html;
    }

    // =========================================================================
    // Options / Defaults
    // =========================================================================

    public static function defaults() {
        return array(
            'enabled_post_types'     => array('post', 'page'),
            'enable_schema'          => 0,
            'minify'                 => 0,
            'acf_include'            => 1,
            'cron_enabled'           => 0,
            'cron_frequency'         => 'daily',
            'ping_enabled'           => 1,
            'ping_urls'              => "# Beispiele (Platzhalter anpassen)\nhttps://webhook.site/your-uuid\n",
            'ping_events'            => array('publish', 'update'),
            'ping_secret'            => '',
            'ping_timeout'           => 5,
            'ping_retry'             => 1,
            'openai_prompt'          => 'Analysiere den folgenden WordPress Beitrag. Antworte ausschließlich als JSON mit overall_score, issues[], suggested_headings[], faq[].',
            // Score-Gewichtung
            'score_preset'           => 'standard', // 'ymyl' | 'standard' | 'ecommerce' | 'custom'
            'score_weight_content'   => 35,
            'score_weight_eeat'      => 30,
            'score_weight_technical' => 20,
            'score_weight_linking'   => 15,
            'seo_plugin'             => 'auto', // auto | yoast | rankmath | aioseo | own
            'remove_category_base'   => 0,
            // Tracking
            'gtm_id'                 => '',
            'ga4_id'                 => '',
            'gsc_verify'             => '',
            'meta_pixel'             => '',
            'gsc_client_id'          => '',
            'gsc_client_secret'      => '',
        );
    }

    /**
     * Liefert die aktiven Gewichtungen (normalisiert auf Summe=100).
     * Wird von calculate_ai_analysis() und der Metabox genutzt.
     */
    public static function get_score_weights( $o = array() ) {

        $presets = array(
            'ymyl'      => array( 'content' => 30, 'eeat' => 40, 'technical' => 20, 'linking' => 10 ),
            'standard'  => array( 'content' => 35, 'eeat' => 30, 'technical' => 20, 'linking' => 15 ),
            'ecommerce' => array( 'content' => 30, 'eeat' => 20, 'technical' => 35, 'linking' => 15 ),
        );

        $preset = isset( $o['score_preset'] ) ? $o['score_preset'] : 'standard';

        if ( $preset !== 'custom' ) {
            return $presets[ $preset ] ?? $presets['standard'];
        }

        // Custom: aus gespeicherten Werten lesen, auf 100 normalisieren
        $w = array(
            'content'   => max( 5, (int) ( $o['score_weight_content']   ?? 35 ) ),
            'eeat'      => max( 5, (int) ( $o['score_weight_eeat']      ?? 30 ) ),
            'technical' => max( 5, (int) ( $o['score_weight_technical'] ?? 20 ) ),
            'linking'   => max( 5, (int) ( $o['score_weight_linking']   ?? 15 ) ),
        );
        $sum = array_sum( $w );
        if ( $sum !== 100 ) {
            foreach ( $w as $k => $v ) {
                $w[ $k ] = (int) round( $v * 100 / $sum );
            }
            $w['content'] += ( 100 - array_sum( $w ) ); // Rundungsfehler ausgleichen
        }
        return $w;
    }

    /* ===== Lizenz/Trial ===== */

    public static function trial_is_active() {
        $ts = (int) get_option('aije_activated_at', 0);
        if (!$ts) {
            return true;
        }
        $end = $ts + self::TRIAL_DAYS * DAY_IN_SECONDS;
        return (time() <= $end);
    }

    public static function trial_end_timestamp() {
        $ts = (int) get_option('aije_activated_at', 0);
        if (!$ts) {
            return 0;
        }
        return $ts + self::TRIAL_DAYS * DAY_IN_SECONDS;
    }

    /**
     * Gibt das aktiv zu verwendende SEO-Plugin zurück.
     * Rückgabe: 'yoast' | 'rankmath' | 'aioseo' | 'own'
     */
    public function get_active_seo_plugin() {
        $o      = $this->get_opts();
        $choice = $o['seo_plugin'] ?? 'auto';
        if ( $choice !== 'auto' ) { return $choice; }
        // Auto-Erkennung
        if ( defined('WPSEO_VERSION') )      { return 'yoast'; }
        if ( defined('RANK_MATH_VERSION') )  { return 'rankmath'; }
        if ( defined('AIOSEO_VERSION') )     { return 'aioseo'; }
        return 'own';
    }

    public static function is_pro_active() {
        // Aktuell: alle Features frei verfügbar.
        // Für künftige Lizenz-/API-Gates hier erweitern:
        // return self::license_is_valid() || self::api_quota_active();
        return true;
    }

    // =========================================================================
    // Boot
    // =========================================================================

    public function boot() {

        // Meta-Generator AJAX-Hooks
        add_action('wp_ajax_aije_generate_meta',   array($this, 'aije_generate_meta_handler'));
        add_action('wp_ajax_aije_save_meta',       array($this, 'aije_save_meta_handler'));
        // KI-Themen-Analyse AJAX-Hook
        add_action('wp_ajax_aije_topic_analysis',  array($this, 'aije_topic_analysis_handler'));
        // Pro-Status prüfen
        add_action('wp_ajax_aije_check_status',    array($this, 'aije_check_status_handler'));

        add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_assets'));
        add_action('admin_notices',         array($this, 'stats_consent_notice'));
        add_action('admin_post_aije_stats_optout',  array($this, 'handle_stats_optout'));
        add_action('admin_post_aije_stats_optin',   array($this, 'handle_stats_optin'));
        // add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts')); // KI-JS: temporär deaktiviert
        add_action('add_meta_boxes', array($this, 'add_score_metabox')); // AI Readiness Score – aktiv

        // ---- NEU: Experten-Profil-Felder im User-Profil ----
        add_action('show_user_profile',   array($this, 'add_expert_profile_fields'));
        add_action('edit_user_profile',   array($this, 'add_expert_profile_fields'));
        add_action('personal_options_update',  array($this, 'save_expert_profile_fields'));
        add_action('edit_user_profile_update', array($this, 'save_expert_profile_fields'));

        // ---- NEU: Person-Schema im <head> ausgeben ----
        add_action('wp_head', array($this, 'output_person_schema_in_head'), 5);
        // ---- AIJE eigene Meta-Description (Fallback ohne SEO-Plugin) ----
        add_action('wp_head', array($this, 'output_aije_meta_description'), 4);
        add_action('wp_head', array($this, 'output_tracking_head'), 1);
        // ---- Heartbeat bei Admin-Aktivität (Login + jeder Backend-Aufruf) ----
        add_action('wp_login',   array($this, 'on_admin_login'), 10, 2);
        add_action('admin_init', array($this, 'on_admin_activity'));
        // Output-Buffer schon beim plugins_loaded starten
        if ( is_admin() ) { ob_start(); }
        // ---- Eigene SEO-Meta-Box registrieren ----
        add_action('add_meta_boxes', array($this, 'add_seo_metabox'));
        add_action('save_post',      array($this, 'save_seo_metabox'), 10, 1);

        if (is_admin()) {
            add_action('admin_menu', array($this, 'tools_menu'));
            add_action('admin_init', array($this, 'register_settings'));
            add_action('add_meta_boxes', array($this, 'add_toggle_metabox'));
            add_action('add_meta_boxes', array($this, 'add_preview_metabox'));
            add_action('save_post', array($this, 'save_post_meta'));
            add_action('admin_post_aije_export', array($this, 'handle_export'));
            add_action('admin_post_aije_run_cron_now', array($this, 'handle_run_cron_now'));
            add_action('admin_post_aije_clear_cron', array($this, 'handle_clear_cron'));
            add_action('admin_post_aije_test_ping', array($this, 'handle_test_ping'));
            add_action('admin_post_aije_flush_queue', array($this, 'handle_flush_queue'));
        }

        add_filter('cron_schedules', array($this, 'add_schedules'));
        add_action(self::CRON_EXPORT,     array($this, 'cron_export_runner'));
        add_action(self::CRON_PING,       array($this, 'cron_ping_runner'));
        add_action(self::CRON_HEARTBEAT,  array($this, 'cron_heartbeat_runner'));

        // Frontend Auto-Embed (vorhandenes JSON-Blob)
        add_action('wp_head', array($this, 'auto_embed'));
        add_action('wp_body_open', array($this, 'auto_embed'));

        add_action('transition_post_status', array($this, 'on_transition_status'), 10, 3);
        add_action('post_updated', array($this, 'on_post_updated'), 10, 3);

        // add_action('wp_ajax_aije_ai_analyze', array($this, 'aije_ai_analyze_handler')); // KI-Feature: temporär deaktiviert
        add_action('wp_ajax_aije_insert_link',       array($this, 'aije_insert_link_handler'));
        add_action('wp_ajax_aije_exclude_post',      array($this, 'aije_exclude_post_handler'));
        add_action('wp_ajax_aije_include_post',      array($this, 'aije_include_post_handler'));

        $o = $this->get_opts();
        $this->maybe_reschedule_export(!empty($o['cron_enabled']), $o['cron_frequency']);
        $this->ensure_ping_cron();
        $this->ensure_heartbeat_cron();
        add_action( 'init', array($this, 'register_llms_rewrite') );
        add_action( 'admin_init', array($this, 'handle_gsc_oauth_callback') );
        add_action( 'template_redirect', array($this, 'serve_llms_txt') );
        add_filter( 'robots_txt', array($this, 'append_llms_to_robots'), 10, 2 );
    }

    public function enqueue_admin_assets($hook) {

        // CSS nur auf Plugin-Seiten
        if (strpos($hook, 'aije') !== false) {
            wp_enqueue_style('aije-admin-css', plugin_dir_url(__FILE__) . 'aije-admin.css', array(), '1.2.6');
        }

        // AJAX-Nonce auf Beitrags-Editierseiten (für "Link einfügen")
        if (in_array($hook, array('post.php', 'post-new.php'))) {
            wp_add_inline_script('jquery-core', 'var aije_link = ' . wp_json_encode(array(
                'ajax_url' => admin_url('admin-ajax.php'),
                'nonce'    => wp_create_nonce('aije_insert_link'),
            )) . ';', 'before');
        }
    }

    public function enqueue_admin_scripts($hook) {
        if (!in_array($hook, array('post.php', 'post-new.php'))) {
            return;
        }
        wp_enqueue_script(
            'aije-ai-js',
            plugin_dir_url(__FILE__) . 'aije-ai.js',
            array('jquery'),
            '1.0',
            true
        );
        wp_localize_script('aije-ai-js', 'aije_ai', array(
            'ajax_url' => admin_url('admin-ajax.php'),
            'nonce'    => wp_create_nonce('aije_ai_nonce'),
        ));
    }

    public function add_score_metabox() {
        $types = $this->get_opts()['enabled_post_types'];
        foreach ($types as $t) {
            add_meta_box(
                'aije_score',
                'WP Rankify – Readiness Score',
                array($this, 'render_score_metabox'),
                $t,
                'side',
                'high'
            );
        }
    }

    public function render_score_metabox( $post ) {

        $o        = $this->get_opts();
        $analysis = $this->calculate_ai_analysis( $post );
        $score    = $analysis['score'];
        $cats     = $analysis['categories'];

        wp_nonce_field( 'aije_ai_nonce', 'aije_ai_nonce_field' );

        $color = $score >= 75 ? '#27ae60' : ( $score >= 50 ? '#e67e22' : '#e74c3c' );
        $label = $score >= 75 ? 'Gut'     : ( $score >= 50 ? 'Optimierbar' : 'Kritisch' );

        // ── Gesamt-Score ──
        echo '<div style="text-align:center;padding:10px 4px 6px;">';
        echo '<div style="font-size:32px;font-weight:700;color:' . esc_attr( $color ) . ';line-height:1;">' . esc_html( $score ) . '</div>';
        echo '<div style="font-size:11px;color:' . esc_attr( $color ) . ';font-weight:600;text-transform:uppercase;letter-spacing:.05em;">' . esc_html( $label ) . '</div>';
        echo '</div>';

        // ── Kategorien-Balken ──
        echo '<div style="margin:10px 0 4px;font-size:11px;font-weight:600;color:#555;text-transform:uppercase;letter-spacing:.04em;">Kategorien</div>';

        $bar_colors = array(
            'content'   => '#3498db',
            'eeat'      => '#9b59b6',
            'technical' => '#1abc9c',
            'linking'   => '#e67e22',
        );

        foreach ( $cats as $key => $cat ) {
            $bar_color = $bar_colors[ $key ] ?? '#999';
            echo '<div style="margin-bottom:7px;">';
            echo '<div style="display:flex;justify-content:space-between;font-size:11px;margin-bottom:2px;">';
            echo '<span style="color:#333;">' . esc_html( $cat['label'] ) . ' <span style="color:#aaa;">(' . esc_html( $cat['weight'] ) . '%)</span></span>';
            echo '<span style="font-weight:700;color:' . esc_attr( $bar_color ) . ';">' . esc_html( $cat['score'] ) . '</span>';
            echo '</div>';
            echo '<div style="background:#eee;border-radius:4px;height:6px;overflow:hidden;">';
            echo '<div style="width:' . esc_attr( $cat['score'] ) . '%;background:' . esc_attr( $bar_color ) . ';height:6px;border-radius:4px;"></div>';
            echo '</div>';
            echo '</div>';
        }

        // ── Issues mit Beratungs-Button ──
        if ( ! empty( $analysis['issues'] ) ) {

            echo '<hr style="margin:10px -12px;">';
            echo '<div style="font-size:11px;font-weight:600;color:#555;text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px;">Optimierungspotenzial</div>';

            $severity_styles = array(
                'high'   => 'background:#fdecea;color:#c0392b;',
                'medium' => 'background:#fef9e7;color:#b7770d;',
                'low'    => 'background:#eafaf1;color:#1e8449;',
            );
            $severity_labels = array( 'high' => 'Hoch', 'medium' => 'Mittel', 'low' => 'Gering' );
            $cat_icons       = array( 'content' => '✍', 'eeat' => '🏅', 'technical' => '⚙', 'linking' => '🔗' );

            // Alle Advice-Daten für JS vorbereiten
            $all_advice = array();
            foreach ( $analysis['issues'] as $idx => $issue ) {
                $all_advice[ $idx ] = $this->build_issue_advice( $issue, $post, $analysis );
            }

            $total_issues = count( $analysis['issues'] );
            $scrollable   = $total_issues > 3;
            $max_h        = $scrollable ? 'max-height:340px;overflow-y:auto;padding-right:4px;' : '';

            echo '<div style="' . esc_attr( $max_h ) . '">';

            foreach ( $analysis['issues'] as $idx => $issue ) {
                $sev_style = $severity_styles[ $issue['severity'] ] ?? '';
                $sev_label = $severity_labels[ $issue['severity'] ] ?? '';
                $icon      = $cat_icons[ $issue['category'] ] ?? '•';
                $border_c  = $bar_colors[ $issue['category'] ] ?? '#ccc';

                echo '<div style="margin-bottom:8px;padding:7px 8px;border-radius:5px;background:#f8f8f8;border-left:3px solid ' . esc_attr( $border_c ) . ';">';
                echo '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:3px;">';
                echo '<span style="font-size:10px;">' . esc_html( $icon ) . ' <strong>' . esc_html( $issue['msg'] ) . '</strong></span>';
                echo '<span style="font-size:9px;padding:1px 5px;border-radius:3px;white-space:nowrap;' . esc_attr( $sev_style ) . '">' . esc_html( $sev_label ) . '</span>';
                echo '</div>';
                echo '<button type="button"
                    class="aije-advice-btn"
                    data-idx="' . esc_attr( $idx ) . '"
                    style="margin-top:5px;font-size:10px;padding:3px 8px;background:' . esc_attr( $border_c ) . ';color:#fff;border:none;border-radius:3px;cursor:pointer;width:100%;">
                    💡 Wie verbessere ich das konkret?
                </button>';
                echo '</div>';
            }

            echo '</div>';

            if ( $scrollable ) {
                echo '<div style="font-size:10px;color:#aaa;text-align:center;margin-top:4px;padding-top:4px;border-top:1px solid #eee;">'
                    . esc_html( $total_issues ) . ' Hinweise – scrollen um alle zu sehen ↕</div>';
            }

            // Advice-Daten als JSON ins DOM
            echo '<script id="aije-advice-data" type="application/json">'
                . wp_json_encode( $all_advice, JSON_UNESCAPED_UNICODE | JSON_HEX_TAG | JSON_HEX_AMP )
                . '</script>';
        }

        // ── Meta-Description Generator ──
        $this->render_meta_generator_box( $post );

        // ── KI-Themen-Analyse ──
        $this->render_topic_analysis_box( $post );

        // ── Fullscreen-Overlay HTML ──
        echo '
<div id="aije-advice-overlay" style="display:none;position:fixed;top:0;left:0;width:100%;height:100%;z-index:999999;background:rgba(0,0,0,.7);backdrop-filter:blur(3px);">
  <div id="aije-advice-panel" style="position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:min(760px,94vw);max-height:88vh;background:#fff;border-radius:12px;box-shadow:0 24px 80px rgba(0,0,0,.35);overflow:hidden;display:flex;flex-direction:column;">

    <!-- Header -->
    <div id="aije-advice-header" style="padding:20px 24px 16px;border-bottom:1px solid #eee;display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-shrink:0;">
      <div>
        <div id="aije-advice-subtitle" style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px;opacity:.7;"></div>
        <div id="aije-advice-title" style="font-size:18px;font-weight:700;color:#1a1a2e;line-height:1.3;"></div>
      </div>
      <button id="aije-advice-close" type="button" style="flex-shrink:0;background:none;border:1px solid #ddd;border-radius:6px;padding:6px 10px;cursor:pointer;font-size:14px;color:#666;line-height:1;">✕ Schließen</button>
    </div>

    <!-- Scrollable Body -->
    <div style="overflow-y:auto;padding:24px;flex:1;">

      <!-- Warum wichtig -->
      <div style="margin-bottom:22px;">
        <div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:8px;">🎯 Warum das wichtig ist</div>
        <div id="aije-advice-why" style="font-size:13.5px;line-height:1.7;color:#333;background:#f8f9fa;border-radius:8px;padding:14px 16px;"></div>
      </div>

      <!-- Dein aktueller Stand -->
      <div style="margin-bottom:22px;">
        <div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:8px;">📊 Dein aktueller Stand</div>
        <div id="aije-advice-situation" style="font-size:13.5px;line-height:1.7;color:#333;background:#fff3cd;border-radius:8px;padding:14px 16px;border-left:4px solid #ffc107;"></div>
      </div>

      <!-- Konkretes Beispiel -->
      <div style="margin-bottom:22px;">
        <div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:8px;">💡 Konkretes Beispiel</div>
        <div id="aije-advice-example" style="font-size:13px;line-height:1.75;color:#333;background:#f0f7ff;border-radius:8px;padding:14px 16px;border-left:4px solid #3498db;white-space:pre-line;font-family:inherit;"></div>
      </div>

      <!-- Checkliste -->
      <div style="margin-bottom:22px;">
        <div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:8px;">✅ Deine nächsten Schritte</div>
        <div id="aije-advice-checklist" style="background:#f0fff4;border-radius:8px;padding:14px 16px;border-left:4px solid #27ae60;"></div>
      </div>

      <!-- Pro-Tipp -->
      <div id="aije-advice-tip-wrap" style="background:#fef9e7;border-radius:8px;padding:12px 16px;border-left:4px solid #f39c12;">
        <div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#b7770d;margin-bottom:6px;">⭐ Profi-Tipp</div>
        <div id="aije-advice-tip" style="font-size:13px;line-height:1.65;color:#555;"></div>
      </div>

      <!-- Interne Link-Vorschläge (nur bei linking-Issue sichtbar) -->
      <div id="aije-related-wrap" style="display:none;margin-top:20px;">
        <div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:10px;">🔗 Thematisch passende Artikel für interne Links</div>
        <div id="aije-related-list"></div>
        <div style="font-size:11px;color:#aaa;margin-top:8px;">Relevanz basierend auf Keyword-Überschneidung mit deinem Artikel.</div>
      </div>

    </div><!-- /body -->
  </div><!-- /panel -->
</div><!-- /overlay -->

<script>
// Universelle Editor-Update-Funktion für Gutenberg + Classic Editor
function aije_update_editor(newContent) {
    if (!newContent) return;

    // ── Gutenberg (Block Editor) ──────────────────────────────────────────────
    if (window.wp && wp.data && wp.data.dispatch) {
        try {
            // Neuen Content in den Block-Editor laden
            wp.data.dispatch("core/editor").editPost({ content: newContent });
            // Als "geändert" markieren damit Gutenberg weiß dass es gespeichert werden muss
            // (optional – der Content ist ja schon in der DB)
            return;
        } catch(e) {
            // Gutenberg API nicht verfügbar → Classic-Fallback
        }
    }

    // ── Classic Editor (TinyMCE) ─────────────────────────────────────────────
    if (window.tinyMCE) {
        var ed = tinyMCE.get("content");
        if (ed && !ed.isHidden()) {
            ed.setContent(newContent);
            ed.save(); // Sync zurück in das Textarea
            return;
        }
    }

    // ── Classic Editor Text-Modus (Textarea) ─────────────────────────────────
    var textarea = document.getElementById("content");
    if (textarea) {
        textarea.value = newContent;
        return;
    }

    // ── Letzter Fallback: Seite neu laden ────────────────────────────────────
    window.location.reload();
}

(function(){
    var overlay  = document.getElementById("aije-advice-overlay");
    var dataEl   = document.getElementById("aije-advice-data");
    if (!overlay || !dataEl) return;

    var adviceData = {};
    try { adviceData = JSON.parse(dataEl.textContent); } catch(e) { return; }

    function openAdvice(idx) {
        var d = adviceData[idx];
        if (!d) return;

        document.getElementById("aije-advice-title").textContent    = d.title    || "";
        document.getElementById("aije-advice-subtitle").textContent  = d.subtitle || "";
        document.getElementById("aije-advice-subtitle").style.color  = d.color    || "#666";
        document.getElementById("aije-advice-why").textContent       = d.why      || "";
        document.getElementById("aije-advice-situation").textContent = d.situation|| "";
        document.getElementById("aije-advice-example").textContent   = d.example  || "";
        document.getElementById("aije-advice-tip").textContent       = d.tip      || "";

        // Header-Akzentfarbe
        document.getElementById("aije-advice-header").style.borderTop = "4px solid " + (d.color || "#3498db");

        // Checkliste
        var cl = document.getElementById("aije-advice-checklist");
        cl.innerHTML = "";
        if (d.checklist && d.checklist.length) {
            d.checklist.forEach(function(item, i) {
                var div = document.createElement("div");
                div.style.cssText = "display:flex;gap:10px;padding:6px 0;" + (i > 0 ? "border-top:1px solid rgba(0,0,0,.06);" : "");
                div.innerHTML = "<span style=\"flex-shrink:0;width:20px;height:20px;background:#27ae60;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;margin-top:2px;\">" + (i+1) + "</span>"
                              + "<span style=\"font-size:13px;line-height:1.6;color:#333;\">" + item + "</span>";
                cl.appendChild(div);
            });
        }

        // Related Posts (interne Link-Vorschläge)
        var relWrap = document.getElementById("aije-related-wrap");
        var relList = document.getElementById("aije-related-list");
        relList.innerHTML = "";
        if (d.related_posts && d.related_posts.length) {
            relWrap.style.display = "block";
            d.related_posts.forEach(function(p) {
                var card = document.createElement("div");
                card.style.cssText = "background:#f8f9fa;border:1px solid #e5e7eb;border-radius:8px;padding:12px 14px;margin-bottom:8px;display:flex;justify-content:space-between;align-items:flex-start;gap:10px;";

                var info = document.createElement("div");
                info.style.flex = "1";
                info.innerHTML = "<div style=\"font-size:13px;font-weight:600;color:#1a1a2e;margin-bottom:3px;\">" + p.title + "</div>"
                               + "<div style=\"font-size:11px;color:#888;line-height:1.4;\">" + p.excerpt + "</div>";

                var btn = document.createElement("button");
                btn.type = "button";
                btn.textContent = "\u2197 Link einfügen";
                btn.style.cssText = "flex-shrink:0;font-size:11px;padding:6px 12px;background:#3498db;color:#fff;border:none;border-radius:5px;cursor:pointer;white-space:nowrap;font-weight:600;";
                (function(thisBtn, thisPost) {
                    thisBtn.addEventListener("click", function() {
                        if (!window.aije_link) { alert("Seite neu laden und erneut versuchen."); return; }
                        thisBtn.textContent = "Wird eingefügt...";
                        thisBtn.disabled = true;
                        thisBtn.style.opacity = "0.7";
                        var pidEl = document.querySelector("input[name=post_ID]") || document.querySelector("#post_ID");
                        var formData = new FormData();
                        formData.append("action",    "aije_insert_link");
                        formData.append("nonce",     window.aije_link.nonce);
                        formData.append("post_id",   pidEl ? pidEl.value : 0);
                        formData.append("target_id", thisPost.id);
                        fetch(window.aije_link.ajax_url, { method: "POST", body: formData, credentials: "same-origin" })
                        .then(function(r) { return r.json(); })
                        .then(function(data) {
                            if (data.success) {
                                // Button grün + deaktivieren
                                thisBtn.textContent = "✓ Eingefügt!";
                                thisBtn.style.background = "#27ae60";
                                thisBtn.style.opacity = "1";
                                thisBtn.disabled = true;

                                // Feedback unter dem Button
                                var oldFb = thisBtn.parentNode.querySelector(".aije-fb");
                                if (oldFb) oldFb.remove();
                                var fb = document.createElement("div");
                                fb.className = "aije-fb";
                                fb.style.cssText = "font-size:10px;color:#27ae60;margin-top:4px;font-weight:600;line-height:1.4;";
                                fb.textContent = data.data.method === "keyword"
                                    ? "✓ Keyword \"" + data.data.keyword + "\" verlinkt"
                                    : "✓ Lese-auch-Absatz eingefügt";
                                thisBtn.parentNode.appendChild(fb);

                                // Editor sofort aktualisieren
                                aije_update_editor(data.data.new_content);

                            } else {
                                thisBtn.textContent = "✗ Fehler";
                                thisBtn.style.background = "#e74c3c";
                                thisBtn.style.opacity = "1";
                                thisBtn.disabled = false;
                                alert(data.data ? data.data.msg : "Unbekannter Fehler");
                            }
                        })
                        .catch(function() {
                            thisBtn.textContent = "✗ Fehler";
                            thisBtn.style.background = "#e74c3c";
                            thisBtn.style.opacity = "1";
                            thisBtn.disabled = false;
                        });
                    });
                })(btn, p);

                card.appendChild(info);
                card.appendChild(btn);
                relList.appendChild(card);
            });
        } else {
            relWrap.style.display = "none";
        }

        overlay.style.display = "block";
        document.body.style.overflow = "hidden";
    }

    function closeAdvice() {
        overlay.style.display = "none";
        document.body.style.overflow = "";
    }

    // Buttons binden
    document.querySelectorAll(".aije-advice-btn").forEach(function(btn) {
        btn.addEventListener("click", function() { openAdvice(this.dataset.idx); });
    });

    // Schließen
    document.getElementById("aije-advice-close").addEventListener("click", closeAdvice);
    overlay.addEventListener("click", function(e) { if (e.target === overlay) closeAdvice(); });
    document.addEventListener("keydown", function(e) { if (e.key === "Escape") closeAdvice(); });
})();
</script>';

    }

    /* ===== Options ===== */


    /**
     * Sendet den ersten Registrierungs-Ping.
     * Wird immer gesendet, unabhängig vom Opt-out.
     * Public damit der pre-class Closure sie aufrufen kann.
     */
    /**
     * Sendet Heartbeat beim Admin-Login – einmal pro Tag.
     */
    public function on_admin_login( $user_login, $user ) {
        if ( ! user_can($user, 'manage_options') ) { return; }
        $last = (int) get_option('aije_last_heartbeat', 0);
        if ( time() - $last < DAY_IN_SECONDS ) { return; }
        $this->cron_heartbeat_runner();
    }

    /**
     * Heartbeat bei jedem Backend-Aufruf – max 1x pro Tag.
     * Deckt Nutzer ab die dauerhaft eingeloggt bleiben.
     */
    public function on_admin_activity() {
        if ( ! current_user_can('manage_options') ) { return; }
        $last            = (int) get_option('aije_last_heartbeat', 0);
        $last_version    = get_option('aije_last_heartbeat_version', '');
        $current_version = AIJE_PLUGIN_VERSION;

        if ( $last_version !== $current_version ) {
            // Neue Version erkannt → Cache löschen + sofort Heartbeat + Status-Cache leeren
            update_option( 'aije_last_heartbeat_version', $current_version );
            delete_option( 'aije_last_heartbeat' );
            delete_transient( 'aije_pro_status_' . md5(home_url()) );
            $this->cron_heartbeat_runner();
            // Auch Status-Check um quota.json::meta sofort zu aktualisieren
            $this->get_pro_status();
            return;
        }

        if ( time() - $last < DAY_IN_SECONDS ) { return; }
        $this->cron_heartbeat_runner();
    }

    public function send_first_ping() {
        global $wp_version;
        $o          = $this->get_opts();
        $post_count = 0;
        foreach ( $o['enabled_post_types'] as $pt ) {
            $cnt = wp_count_posts( $pt );
            $post_count += (int) ( $cnt->publish ?? 0 );
        }
        $payload = array(
            'secret'         => self::stats_secret(),
            'site_url'       => home_url(),
            'site_name'      => get_bloginfo( 'name' ),
            'wp_version'     => $wp_version ?? '',
            'php_version'    => PHP_VERSION,
            'plugin_version' => AIJE_PLUGIN_VERSION,
            'post_count'     => $post_count,
            'first_ping'     => true,
        );
        wp_remote_post( self::STATS_ENDPOINT . 'heartbeat', array(
            'timeout'   => 8,
            'headers'   => array( 'Content-Type' => 'application/json' ),
            'body'      => wp_json_encode( $payload ),
            'blocking'  => false,
            'sslverify' => true,
        ) );
    }


    /* ===== Pro-Status Check ===== */

    public function aije_check_status_handler() {
        check_ajax_referer( 'aije_topic_nonce', 'nonce' );
        if ( ! current_user_can( 'edit_posts' ) ) {
            wp_send_json_error();
        }

        $payload = array(
            'secret'         => self::stats_secret(),
            'site_url'       => home_url(),
            'action'         => 'status',
            'plugin_version' => AIJE_PLUGIN_VERSION,
        );

        $response = wp_remote_post( self::AI_PROXY_URL, array(
            'timeout' => 10,
            'headers' => array( 'Content-Type' => 'application/json' ),
            'body'    => wp_json_encode( $payload ),
            'sslverify' => false,
        ));

        if ( is_wp_error($response) ) {
            wp_send_json_error();
        }

        $body = json_decode( wp_remote_retrieve_body($response), true );
        if ( ! empty($body['success']) ) {
            delete_transient( 'aije_pro_status_' . md5(home_url()) );
            set_transient( 'aije_pro_status_' . md5(home_url()), $body, 5 * MINUTE_IN_SECONDS );
            wp_send_json_success( $body );
        }
        wp_send_json_error();
    }

    /**
     * Gibt den gecachten Pro-Status zurück.
     * Frischt den Cache alle 5 Minuten auf.
     */
    public function get_pro_status() {
        $cache_key = 'aije_pro_status_' . md5(home_url());
        // Cache komplett deaktiviert – immer live vom Proxy
        delete_transient( $cache_key );

        // Kein Cache – Proxy direkt fragen
        $payload  = array(
            'secret'         => self::stats_secret(),
            'site_url'       => home_url(),
            'action'         => 'status',
            'plugin_version' => AIJE_PLUGIN_VERSION,
        );
        $response = wp_remote_post( self::AI_PROXY_URL, array(
            'timeout'   => 8,
            'headers'   => array( 'Content-Type' => 'application/json' ),
            'body'      => wp_json_encode( $payload ),
            'sslverify' => false,
        ));

        if ( ! is_wp_error($response) ) {
            $body = json_decode( wp_remote_retrieve_body($response), true );
            if ( ! empty($body['success']) ) {
                set_transient( $cache_key, $body, 5 * MINUTE_IN_SECONDS );
                return $body;
            }
        }

        // Fallback
        return array( 'tier' => 'free', 'is_pro' => false, 'remaining' => 3 );
    }

    /* ===== KI-Themen-Analyse ===== */

    public function aije_topic_analysis_handler() {

        check_ajax_referer( 'aije_topic_nonce', 'nonce' );

        if ( ! current_user_can( 'edit_posts' ) ) {
            wp_send_json_error( array( 'msg' => 'Keine Berechtigung.' ) );
        }

        $post_id = intval( $_POST['post_id'] ?? 0 );
        $post    = get_post( $post_id );
        if ( ! $post ) {
            wp_send_json_error( array( 'msg' => 'Beitrag nicht gefunden.' ) );
        }
        // Alle Stati erlauben (Entwurf, ausstehend, veröffentlicht)
        if ( ! in_array( $post->post_status, array('publish','draft','pending','private','future'), true ) ) {
            wp_send_json_error( array( 'msg' => 'Ungültiger Beitragsstatus.' ) );
        }
        // Duplikat-Sperre: max 1 Anfrage pro Post alle 15 Sekunden
        $lock_key = 'aije_analysis_lock_' . $post_id . '_' . get_current_user_id();
        if ( get_transient( $lock_key ) ) {
            wp_send_json_error( array( 'msg' => 'Bitte warte kurz vor der nächsten Analyse.' ) );
        }
        set_transient( $lock_key, 1, 15 );

        $title   = get_the_title( $post ) ?: '(Kein Titel)';
        $content = wp_strip_all_tags( $post->post_content );
        $content = mb_substr( preg_replace( '/\s+/', ' ', $content ), 0, 3000 );

        // Cache prüfen – außer bei force=1
        $force = ! empty( $_POST['force'] );
        if ( ! $force ) {
            $cached = get_transient( 'aije_topic_' . $post_id );
            if ( $cached ) {
                wp_send_json_success( array(
                    'data'   => $cached,
                    'quota'  => array(),
                    'cached' => true,
                ) );
            }
        }

        $payload = array(
            'secret'   => self::stats_secret(),
            'site_url' => home_url(),
            'title'    => $title,
            'content'  => $content,
            'action'   => 'analyze',
        );

        $response = wp_remote_post(
            self::AI_PROXY_URL,
            array(
                'timeout'   => 35,
                'headers'   => array( 'Content-Type' => 'application/json' ),
                'body'      => wp_json_encode( $payload ),
                'sslverify' => false,
            )
        );


        if ( is_wp_error( $response ) ) {
            wp_send_json_error( array(
                'msg'   => 'Verbindungsfehler: ' . $response->get_error_message(),
                'debug' => array(
                    'proxy_url' => self::AI_PROXY_URL,
                    'wp_error'  => $response->get_error_message(),
                ),
            ) );
        }

        $http_code  = wp_remote_retrieve_response_code( $response );
        $raw_body   = wp_remote_retrieve_body( $response );
        $body       = json_decode( $raw_body, true );

        // Immer Debug-Info mitschicken
        $debug = array(
            'http_code' => $http_code,
            'proxy_url' => self::AI_PROXY_URL,
            'raw_body'  => substr( $raw_body, 0, 300 ),
            'parsed'    => is_array($body) ? 'ok' : 'json_decode fehlgeschlagen',
        );

        if ( empty($body['success']) ) {
            $err = $body['error'] ?? 'Unbekannter Fehler (HTTP ' . $http_code . ')';
            if ( $http_code === 429 ) {
                wp_send_json_error( array(
                    'msg'         => $err,
                    'limit'       => true,
                    'upgrade_url' => $body['upgrade_url'] ?? 'https://wprankify.de/#pricing',
                    'debug'       => $debug,
                ) );
            }
            wp_send_json_error( array( 'msg' => $err, 'debug' => $debug ) );
        }

        // Ergebnis cachen (24h) – alten Cache überschreiben
        delete_transient( 'aije_topic_' . $post_id );
        set_transient( 'aije_topic_' . $post_id, $body['data'], DAY_IN_SECONDS );

        wp_send_json_success( array(
            'data'  => $body['data'],
            'quota' => $body['quota'] ?? array(),
            'debug' => $debug,
        ) );
    }

    /**
     * Rendert den KI-Analyse Button + Ergebnis-Box in der Score-Metabox.
     */
    private function render_topic_analysis_box( $post ) {

        $nonce      = wp_create_nonce( 'aije_topic_nonce' );
        $cached     = get_transient( 'aije_topic_' . $post->ID );
        $pro_status = $this->get_pro_status();
        $tier       = $pro_status['tier']      ?? 'free';
        $remaining  = $pro_status['remaining'] ?? 3;
        $is_pro     = ! empty($pro_status['is_pro']);


        // Tier-Badge
        $tier_colors = array('free'=>'#888','starter'=>'#22c55e','pro'=>'#f29400','agency'=>'#3b82f6');
        $tier_color  = $tier_colors[$tier] ?? '#888';
        $tier_label  = strtoupper($tier);

        echo '<div id="aije-topic-box" style="margin-top:14px;padding-top:14px;border-top:1px solid #eee;">';

        // Header mit Tier-Badge
        echo '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;">';
        echo '<div style="font-size:11px;font-weight:600;color:#555;text-transform:uppercase;letter-spacing:.04em;">🧠 KI-Themen-Analyse</div>';
        echo '<div style="display:flex;align-items:center;gap:6px;">';
        echo '<span id="aije-tier-badge" style="font-size:10px;font-weight:700;padding:2px 7px;border-radius:4px;background:' . esc_attr($tier_color) . '22;color:' . esc_attr($tier_color) . ';">' . esc_html($tier_label) . '</span>';
        if ( ! $is_pro ) {
            echo '<span style="font-size:10px;color:#aaa;">' . (int)$remaining . ' verbleibend</span>';
            echo '<button type="button" id="aije-refresh-status" data-nonce="' . esc_attr($nonce) . '" style="font-size:10px;background:none;border:none;color:#f29400;cursor:pointer;padding:0;" title="Status aktualisieren">↻</button>';
        }
        echo '</div></div>';

        echo '<button type="button" id="aije-topic-btn"
            data-post-id="' . esc_attr($post->ID) . '"
            data-nonce="' . esc_attr($nonce) . '"
            style="width:100%;padding:8px;background:#111;color:#fff;border:none;border-radius:5px;font-size:12px;font-weight:600;cursor:pointer;margin-bottom:8px;">
            🧠 Themen analysieren
        </button>';

        echo '<div id="aije-topic-loading" style="display:none;text-align:center;padding:10px;font-size:12px;color:#888;">KI analysiert Inhalt… (ca. 5–10 Sek.)</div>';
        echo '<div id="aije-topic-results" style="display:none;"></div>';

        // Gecachtes Ergebnis als Info anzeigen – NICHT automatisch rendern
        if ( $cached ) {
            echo '<div id="aije-topic-cached" style="font-size:11px;color:#aaa;margin-bottom:4px;padding:5px 8px;background:#f8f8f8;border-radius:4px;">';
            echo '💾 Letzte Analyse verfügbar – Klick auf den Button um sie anzuzeigen oder neu zu analysieren.';
            echo '</div>';
        }

        echo '</div>';
        ?>
<script>
(function(){
var btn  = document.getElementById('aije-topic-btn');
var load = document.getElementById('aije-topic-loading');
var res  = document.getElementById('aije-topic-results');
if (!btn) return;

var aije_topic_running = false;
btn.addEventListener('click', function(){
    if (aije_topic_running) return; // Doppelklick verhindern
    aije_topic_running = true;
    btn.disabled=true; btn.style.opacity='.6'; btn.textContent='Analysiere…';
    load.style.display='block'; res.style.display='none'; res.innerHTML='';

    // Gecachten Hinweis verstecken beim Klick
    var cached = document.getElementById('aije-topic-cached');
    if(cached) cached.style.display='none';

    var fd=new FormData();
    fd.append('action','aije_topic_analysis');
    fd.append('nonce',btn.dataset.nonce);
    fd.append('post_id',btn.dataset.postId);
    fd.append('force','1'); // Cache immer ignorieren

    fetch(ajaxurl,{method:'POST',body:fd,credentials:'same-origin'})
    .then(function(r){return r.text();})
    .then(function(raw){
        var d; try{d=JSON.parse(raw);}catch(e){d={success:false,data:{msg:'Parse-Fehler: '+raw.substring(0,200)}};}
        load.style.display='none';
        aije_topic_running = false;
    btn.disabled=false; btn.style.opacity='1'; btn.textContent='↻ Neu analysieren';


        if(!d.success){
            var msg = (d.data && d.data.msg) ? d.data.msg : 'Fehler';
            var isLimit = d.data && d.data.limit;
            res.style.display='block';
            if(isLimit){
                var url = (d.data && d.data.upgrade_url) ? d.data.upgrade_url : 'https://wprankify.de/#pricing';
                res.innerHTML='<div style="background:#fff8e1;border:1px solid #f29400;border-radius:8px;padding:14px;font-size:12px;">'
                    +'<div style="font-weight:700;font-size:13px;margin-bottom:8px;">⭐ 3 kostenlose Analysen verbraucht</div>'
                    +'<div style="color:#555;margin-bottom:12px;line-height:1.5;">Mit WP Rankify Pro bekommst du mehr KI-Analysen pro Monat.</div>'
                    +'<a href="https://wprankify.de/#pricing" target="_blank" style="display:block;text-align:center;background:#f29400;color:#fff;padding:10px;border-radius:6px;font-weight:700;text-decoration:none;font-size:13px;">⭐ Jetzt upgraden – ab 2,99€/Monat →</a>'
                    +'<div style="text-align:center;font-size:10px;color:#aaa;margin-top:8px;">Jederzeit kündbar · PayPal · Sofort aktiv</div>'
                    +'</div>';
            } else {
                res.innerHTML='<div style="background:#fef2f2;border:1px solid #fecaca;border-radius:5px;padding:10px;font-size:12px;color:#dc2626;">'+esc(msg)+'</div>';
            }
            return;
        }

        // Daten aus Response holen
        // wp_send_json_success wrапpt in { success: true, data: { ... } }
        var payload = d.data || {};
        var data    = payload.data || payload; // Analyse-Daten
        var quota   = payload.quota || {};
        var html  = '';

        // Wenn keine Daten – Fehlermeldung
        if(!data.overall_assessment && (!data.missing_topics || !data.missing_topics.length)){
            res.style.display='block';
            res.innerHTML='<div style="background:#fef9e7;border:1px solid #fde68a;border-radius:5px;padding:10px;font-size:12px;color:#92400e;">Keine Analyse-Daten erhalten. Bitte erneut versuchen.</div>';
            return;
        }

        // Gesamteinschätzung
        if(data.overall_assessment){
            html += '<div style="background:#f0f7ff;border-left:3px solid #3b82f6;border-radius:0 6px 6px 0;padding:10px 12px;margin-bottom:12px;font-size:12px;color:#1e3a5f;line-height:1.55;">';
            html += '<strong>Gesamteinschätzung:</strong><br>' + esc(data.overall_assessment);
            html += '</div>';
        }

        // Fehlende Themen
        if(data.missing_topics && data.missing_topics.length){
            html += '<div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#555;margin-bottom:6px;">📋 Fehlende Themen</div>';
            data.missing_topics.forEach(function(t){
                var pc = t.priority==='high'?'#e74c3c':(t.priority==='medium'?'#f59e0b':'#22c55e');
                var pb = t.priority==='high'?'#fdecea':(t.priority==='medium'?'#fef9e7':'#f0fdf4');
                html += '<div style="background:'+pb+';border-radius:5px;padding:8px 10px;margin-bottom:5px;">';
                html += '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:3px;">';
                html += '<span style="font-size:12px;font-weight:600;color:#111;">'+esc(t.topic)+'</span>';
                html += '<span style="font-size:10px;font-weight:600;color:'+pc+';white-space:nowrap;margin-left:6px;">'+esc(t.priority)+'</span>';
                html += '</div>';
                html += '<div style="font-size:11px;color:#555;">'+esc(t.reason)+'</div>';
                html += '</div>';
            });
        }

        // Unbeantwortete Fragen
        if(data.unanswered_questions && data.unanswered_questions.length){
            html += '<div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#555;margin:10px 0 6px;">❓ Unbeantwortete Fragen</div>';
            data.unanswered_questions.forEach(function(q){
                html += '<div style="font-size:12px;padding:5px 0;border-bottom:1px solid #f0f0f0;color:#333;">→ '+esc(q.question)+'</div>';
            });
        }

        // Verwandte Suchbegriffe
        if(data.related_searches && data.related_searches.length){
            html += '<div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#555;margin:10px 0 6px;">🔍 Verwandte Suchbegriffe</div>';
            html += '<div style="display:flex;flex-wrap:wrap;gap:5px;">';
            data.related_searches.forEach(function(s){
                html += '<span style="background:#f3f4f6;border:1px solid #e5e7eb;border-radius:4px;padding:3px 8px;font-size:11px;color:#555;" title="'+esc(s.intent)+'">'+esc(s.term)+'</span>';
            });
            html += '</div>';
        }

        // Quota
        if(quota.remaining !== undefined && !quota.is_pro){
            html += '<div style="margin-top:10px;font-size:10px;color:#aaa;text-align:right;">'+quota.remaining+' kostenlose Analysen verbleibend</div>';
        }

        res.innerHTML=html; res.style.display='block';
    })
    .catch(function(){
        load.style.display='none'; btn.disabled=false; btn.style.opacity='1'; btn.textContent='🧠 Themen analysieren';
        res.style.display='block';
        res.innerHTML='<div style="color:#dc2626;font-size:12px;padding:8px;">Verbindungsfehler.</div>';
    });
});
function esc(s){return String(s||'').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');}

// ↻ Status-Refresh Button
var refreshBtn = document.getElementById('aije-refresh-status');
if(refreshBtn){
    refreshBtn.addEventListener('click',function(){
        refreshBtn.textContent='…';
        var fd=new FormData();
        fd.append('action','aije_check_status');
        fd.append('nonce',refreshBtn.dataset.nonce);
        fetch(ajaxurl,{method:'POST',body:fd,credentials:'same-origin'})
        .then(function(r){return r.json();})
        .then(function(d){
            if(d.success && d.data){
                var tier   = d.data.tier || 'free';
                var colors = {free:'#888',starter:'#22c55e',pro:'#f29400',agency:'#3b82f6'};
                var badge  = document.getElementById('aije-tier-badge');
                if(badge){
                    badge.textContent = tier.toUpperCase();
                    badge.style.color = colors[tier]||'#888';
                    badge.style.background = (colors[tier]||'#888')+'22';
                }
                refreshBtn.textContent='↻';
                if(tier !== 'free'){
                    // Pro erkannt: Seite neu laden damit alle Features sichtbar
                    location.reload();
                }
            } else {
                refreshBtn.textContent='↻';
            }
        })
        .catch(function(){ refreshBtn.textContent='↻'; });
    });
}

})();
</script>
        <?php
    }

    private function render_topic_result_html( $data ) {
        if ( ! is_array($data) ) { return; }
        if ( ! empty($data['overall_assessment']) ) {
            echo '<div style="background:#f0f7ff;border-left:3px solid #3b82f6;border-radius:0 6px 6px 0;padding:10px 12px;margin-bottom:10px;font-size:12px;color:#1e3a5f;line-height:1.55;">';
            echo '<strong>Gesamteinschätzung:</strong><br>' . esc_html($data['overall_assessment']);
            echo '</div>';
        }
        if ( ! empty($data['missing_topics']) ) {
            echo '<div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#555;margin-bottom:5px;">📋 Fehlende Themen</div>';
            foreach ( $data['missing_topics'] as $t ) {
                $pb = ($t['priority']??'') === 'high' ? '#fdecea' : (($t['priority']??'') === 'medium' ? '#fef9e7' : '#f0fdf4');
                echo '<div style="background:' . esc_attr($pb) . ';border-radius:5px;padding:7px 10px;margin-bottom:4px;font-size:11px;">';
                echo '<strong>' . esc_html($t['topic']??'') . '</strong><br>';
                echo '<span style="color:#555;">' . esc_html($t['reason']??'') . '</span>';
                echo '</div>';
            }
        }
    }

    /* ===== Meta-Description Generator ===== */

    public function aije_generate_meta_handler() {
        check_ajax_referer( 'aije_meta_nonce', 'nonce' );
        if ( ! current_user_can( 'edit_posts' ) ) {
            wp_send_json_error( array( 'msg' => 'Keine Berechtigung.' ) );
        }
        $post_id = intval( $_POST['post_id'] ?? 0 );
        $post    = get_post( $post_id );
        if ( ! $post ) {
            wp_send_json_error( array( 'msg' => 'Beitrag nicht gefunden.' ) );
        }
        $variants = $this->build_meta_variants( $post );
        if ( empty( $variants ) ) {
            wp_send_json_error( array( 'msg' => 'Nicht genug Inhalt. Bitte mehr Text verfassen.' ) );
        }
        $existing = get_post_meta( $post_id, '_yoast_wpseo_metadesc', true );
        if ( empty( $existing ) ) $existing = get_post_meta( $post_id, 'rank_math_description', true );
        if ( empty( $existing ) ) $existing = get_post_meta( $post_id, '_aioseo_description', true );
        // SEO-Plugin-Erkennung – konsistent mit get_active_seo_plugin()
        $seo = $this->get_active_seo_plugin();
        if ( $seo === 'rankmath' )      { $target = 'rankmath'; }
        elseif ( $seo === 'aioseo' )   { $target = 'aioseo'; }
        elseif ( $seo === 'yoast' )    { $target = 'yoast'; }
        else                           { $target = 'none'; } // WP Rankify eigene Box
        wp_send_json_success( array(
            'variants'      => $variants,
            'existing_meta' => $existing ?: '',
            'target'        => $target,
            'post_id'       => $post_id,
        ) );
    }

    public function aije_save_meta_handler() {
        // DEBUG: Nonce-Check temporär deaktiviert
        // check_ajax_referer( 'aije_meta_nonce', 'nonce' );
        if ( ! current_user_can( 'edit_posts' ) ) {
            wp_send_json_error( array( 'msg' => 'Keine Berechtigung.' ) );
        }
        $post_id = intval( $_POST['post_id'] ?? 0 );
        $meta    = sanitize_text_field( wp_unslash( $_POST['meta_text'] ?? '' ) );
        $target  = sanitize_key( $_POST['target'] ?? 'none' );
        // Immer debuggen
        if ( defined('WP_DEBUG') && WP_DEBUG ) {
            error_log('AIJE save_meta: post_id=' . $post_id . ' target=' . $target . ' meta_len=' . strlen($meta) );
        }
        if ( ! $post_id || empty( $meta ) ) {
            wp_send_json_error( array( 'msg' => 'Ungültige Parameter: post_id=' . $post_id . ' meta_len=' . strlen($meta) . ' target=' . $target ) );
        }
        switch ( $target ) {
            case 'rankmath': update_post_meta( $post_id, 'rank_math_description', $meta ); break;
            case 'aioseo':   update_post_meta( $post_id, '_aioseo_description',   $meta ); break;
            case 'none':     update_post_meta( $post_id, '_aije_metadesc',         $meta ); break;
            default:         update_post_meta( $post_id, '_yoast_wpseo_metadesc', $meta ); break;
        }
        // Immer auch eigenen Key speichern als Fallback
        update_post_meta( $post_id, '_aije_metadesc', $meta );
        clean_post_cache( $post_id );
        wp_send_json_success( array( 'msg' => 'Meta-Description gespeichert.', 'chars' => mb_strlen( $meta ), 'meta' => $meta ) );
    }

    private function build_meta_variants( $post ) {
        $title   = wp_strip_all_tags( get_the_title( $post ) );
        $content = apply_filters( 'the_content', $post->post_content );
        // Lesedauer-Hinweise, Metainfos und style-Attribute entfernen
        $content = preg_replace( '/<p[^>]*>\s*(SEO\s*·|Lesedauer|Reading time)[^<]*<\/p>/iu', '', $content );
        $content = wp_strip_all_tags( $content );
        $content = preg_replace( '/\s+/', ' ', trim( $content ) );
        // Ersten Satz überspringen wenn er zu kurz oder nur Metainfo ist
        if ( mb_strlen( $content ) < 100 ) { return array(); }

        $sentences = $this->meta_extract_sentences( $content );
        preg_match_all( '/(\d+)\s*(%|Tipps?|Schritte?|Methoden?|Wege?)?/u', $content, $nums );
        $number   = ! empty( $nums[1] ) ? $nums[1][0] : '';

        // Ersten sinnvollen Satz finden – mind. 60 Zeichen, kein Metainfo-Satz
        $first_s  = '';
        $meta_patterns = array( '/^SEO\s*·/i', '/^Lesedauer/i', '/^Reading time/i', '/^\d+\s*Minuten/i' );
        foreach ( $sentences as $s ) {
            $s = trim( $s );
            $is_meta = false;
            foreach ( $meta_patterns as $pat ) { if ( preg_match($pat, $s) ) { $is_meta = true; break; } }
            if ( ! $is_meta && mb_strlen($s) >= 60 && mb_strlen($s) <= 200 ) { $first_s = $s; break; }
        }

        // main_kw: kurzes Keyword aus Titel extrahieren
        // Bei langen Titeln/Fragen: ersten sinnvollen Substantivkern nehmen
        $raw_title = trim( preg_replace('/\s+/', ' ', wp_strip_all_tags( get_the_title($post) ) ) );
        if ( empty($raw_title) ) { $raw_title = $title; }
        $main_kw = $this->meta_extract_short_keyword( $raw_title );
        $variants = array();

        $v1 = $this->meta_variant_keyword( $main_kw, $first_s );
        if ( $v1 ) { $variants[] = array( 'strategy' => 'Keyword-Fokus',            'text' => $v1, 'chars' => mb_strlen($v1), 'score' => $this->meta_quality_score($v1,$title) ); }
        $v2 = $this->meta_variant_benefit( $main_kw, $number );
        if ( $v2 ) { $variants[] = array( 'strategy' => 'Nutzen-Fokus',             'text' => $v2, 'chars' => mb_strlen($v2), 'score' => $this->meta_quality_score($v2,$title) ); }
        $v3 = $this->meta_variant_question( $main_kw, $title );
        if ( $v3 ) { $variants[] = array( 'strategy' => 'Frage-Format',             'text' => $v3, 'chars' => mb_strlen($v3), 'score' => $this->meta_quality_score($v3,$title) ); }
        $v4 = $this->meta_variant_cta( $main_kw, $first_s );
        if ( $v4 ) { $variants[] = array( 'strategy' => 'Handlungsaufforderung',    'text' => $v4, 'chars' => mb_strlen($v4), 'score' => $this->meta_quality_score($v4,$title) ); }

        return $variants;
    }

    private function meta_variant_keyword( $kw, $first_s ) {
        $k = $kw;
        $templates = array(
            $k . ' – verständlich erklärt mit konkreten Tipps und Beispielen.',
            'Alles über ' . $k . ': Hintergründe, Tipps und häufige Fehler vermeiden.',
            $k . ' im Überblick: Das Wichtigste kompakt zusammengefasst.',
        );
        return $this->meta_finalize( $templates[ array_rand($templates) ] );
    }

    private function meta_variant_benefit( $kw, $number ) {
        $k = $kw;
        if ( ! empty($number) && intval($number) > 1 && intval($number) < 20 ) {
            $n = intval($number);
            $templates = array(
                "Mit $n praktischen Tipps zu $k – konkret und direkt anwendbar.",
                "$n hilfreiche Wege für $k – Schritt für Schritt erklärt.",
            );
        } else {
            $templates = array(
                'So gelingt ' . $k . ' wirklich – mit Tipps aus der Praxis.',
                $k . ': Was wirklich hilft und worauf es ankommt.',
                'Alles was du über ' . $k . ' wissen musst – kompakt auf den Punkt.',
            );
        }
        return $this->meta_finalize( $templates[ array_rand($templates) ] );
    }

    private function meta_variant_question( $kw, $title ) {
        $k = $kw;
        $t = mb_strtolower($title);
        if ( mb_strpos($t,'wie ') !== false ) {
            $templates = array(
                'Wie gelingt ' . $k . '? Schritt für Schritt erklärt mit Tipps aus der Praxis.',
                'Wie du ' . $k . ' richtig angehst – klar erklärt und sofort umsetzbar.',
            );
        } elseif ( mb_strpos($t,'warum') !== false ) {
            $templates = array(
                'Warum ' . $k . ' so wichtig ist – und was du konkret tun kannst.',
                $k . ': Die Gründe, die Hintergründe und die besten Lösungen.',
            );
        } elseif ( mb_strpos($t,'was ') !== false ) {
            $templates = array(
                'Was ist ' . $k . '? Einfach erklärt mit konkreten Beispielen.',
                $k . ' einfach erklärt: Was es ist, was es bringt und wie du startest.',
            );
        } else {
            $templates = array(
                $k . ' – alle wichtigen Fragen beantwortet, kompakt und verständlich.',
                'Rund um ' . $k . ': Die häufigsten Fragen klar beantwortet.',
            );
        }
        return $this->meta_finalize( $templates[ array_rand($templates) ] );
    }

    private function meta_variant_cta( $kw, $first_s ) {
        $k = $kw;
        $templates = array(
            $k . ' – jetzt mehr erfahren und direkt umsetzen.',
            $k . ' verstehen und anwenden: Der praktische Einstieg.',
            'Starte jetzt mit ' . $k . ' – Schritt für Schritt erklärt.',
        );
        return $this->meta_finalize( $templates[ array_rand($templates) ] );
    }

    private function meta_extract_sentences( $text ) {
        $raw = preg_split( '/(?<=[.!?])\s+/', $text, -1, PREG_SPLIT_NO_EMPTY );
        return array_values( array_filter( $raw, function($s){ return mb_strlen(trim($s)) >= 20; } ) );
    }


    /**
     * Extrahiert ein kurzes, sinnvolles Keyword aus einem Titel.
     * Bei Fragen ("Was ist X?", "Warum Y?") wird der Kern X/Y extrahiert.
     * Bei kurzen Titeln wird der Titel direkt verwendet.
     */
    private function meta_extract_short_keyword( $title ) {
        $kw = rtrim( trim($title), '?!.:,;' );

        // Fragewörter am Anfang entfernen
        $starts = array(
            '/^(Was ist|Was sind|Was bedeutet|Was macht|Was kostet)\s+/iu',
            '/^(Wie funktioniert|Wie geht|Wie kann|Wie wird)\s+/iu',
            '/^(Warum ist|Warum sind|Warum rankt|Warum funktioniert)\s+/iu',
            '/^(Wann ist|Wann sollte|Welche|Welcher|Welches)\s+/iu',
        );
        foreach ( $starts as $p ) { $kw = preg_replace( $p, '', $kw ); }
        $kw = rtrim( trim($kw), '?!.:,;' );

        // Bei Titel mit Doppelpunkt: nur Teil vor dem Doppelpunkt nehmen
        // ABER nur wenn davor mindestens 2 Wörter stehen
        if ( strpos($kw, ':') !== false ) {
            $p = explode(':', $kw, 2);
            $before = trim($p[0]);
            if ( str_word_count($before) >= 2 ) { $kw = $before; }
        }

        // Bei em-dash: nur Teil davor nehmen wenn mind. 2 Wörter
        foreach ( array(' – ', ' — ', ' - ') as $sep ) {
            if ( strpos($kw, $sep) !== false ) {
                $p = explode($sep, $kw, 2);
                $before = trim($p[0]);
                if ( str_word_count($before) >= 2 ) { $kw = $before; break; }
            }
        }

        $kw = rtrim( trim($kw), '?!.:,;–- ' );
        if ( mb_strlen($kw) < 3 ) { $kw = $title; }
        return $kw;
    }


    private function meta_extract_keywords( $text ) {
        $stops = array( 'der','die','das','den','dem','des','ein','eine','und','oder','aber','wenn','weil','dass','dann','ist','sind','war','hat','haben','wird','werden','kann','muss','sein','nicht','auch','noch','nur','sehr','mehr','alle','hier','dort','mit','von','zu','bei','in','an','auf','aus','nach','the','and','for','with','are','was','beim','zum','zur','im','am','dein','deine','deiner','deines','deinem','ihnen','ihrer','diese','diesen','diesem','dieser','dieses','durch','eine','einem','einen','einer','eines','mein','meine','unser','unsere','kein','keine','jeder','jede','jedes','haben','dabei','sowie','daher','darum','somit','damit' );

        // Originalwörter behalten für korrekte Schreibweise
        $words_orig = preg_split( '/\s+/', preg_replace('/[^\wäöüÄÖÜß\s]/u', ' ', $text), -1, PREG_SPLIT_NO_EMPTY );

        // Frequenzanalyse auf Lowercase
        $freq = array();
        $orig_map = array(); // lowercase → erstes Originalwort
        foreach ( $words_orig as $w ) {
            if ( mb_strlen($w) < 4 ) { continue; }
            $wl = mb_strtolower($w, 'UTF-8');
            if ( in_array($wl, $stops) ) { continue; }
            $freq[$wl] = ( $freq[$wl] ?? 0 ) + 1;
            // Ersten Fund in Originalschreibweise merken
            if ( ! isset($orig_map[$wl]) ) {
                $orig_map[$wl] = $w;
            }
        }

        arsort( $freq );
        $top = array_keys( array_slice($freq, 0, 10, true) );

        // Originalschreibweise zurückgeben
        return array_map( function($kl) use ($orig_map) {
            return $orig_map[$kl] ?? $kl;
        }, $top );
    }

    private function meta_trim_to_word( $text, $max ) {
        if ( mb_strlen($text) <= $max ) { return $text; }
        $cut = mb_substr($text, 0, $max);
        $pos = mb_strrpos($cut, ' ');
        if ( $pos !== false ) { $cut = mb_substr($cut, 0, $pos); }
        return rtrim( $cut, ',:;' );
    }

    private function meta_finalize( $text ) {
        $text = trim( preg_replace('/\s+/', ' ', $text) );
        if ( mb_strlen($text) > 160 ) {
            $text = $this->meta_trim_to_word($text, 157);
            if ( ! preg_match('/[.!?]$/', $text) ) { $text = rtrim($text,',:; ') . '.'; }
        }
        if ( mb_strlen($text) < 120 ) {
            foreach ( array(' Jetzt informieren.',' Hier nachlesen.',' Alle Infos hier.') as $f ) {
                if ( mb_strlen($text.$f) <= 160 ) { $text .= $f; break; }
            }
        }
        return mb_strtoupper( mb_substr($text,0,1) ) . mb_substr($text,1);
    }

    private function meta_quality_score( $meta, $title ) {
        $score = 0;
        $len   = mb_strlen($meta);
        if ( $len >= 140 && $len <= 160 )    { $score += 40; }
        elseif ( $len >= 120 && $len < 140 ) { $score += 25; }
        elseif ( $len > 160 && $len <= 170 ) { $score += 20; }
        elseif ( $len > 0 )                  { $score += 10; }
        $stops  = array('der','die','das','und','oder','mit','von','zu','in','an','auf','bei');
        $twords = array_filter( preg_split('/\s+/', mb_strtolower($title)), fn($w) => mb_strlen($w)>=4 && !in_array($w,$stops) );
        $ml = mb_strtolower($meta);
        $hits = 0;
        foreach ($twords as $w) { if ( mb_strpos($ml,$w) !== false ) { $hits++; } }
        $total = count($twords);
        if ($total > 0) { $score += (int)round(($hits/$total)*40); }
        if ( preg_match('/[.!?]$/', $meta) ) { $score += 20; }
        return min(100, $score);
    }

    private function render_meta_generator_box( $post ) {
        $nonce  = wp_create_nonce('aije_meta_nonce');
        $seo    = $this->get_active_seo_plugin();
        $target = array('rankmath'=>'rankmath','aioseo'=>'aioseo','yoast'=>'yoast')[$seo] ?? 'none';
        $tl     = array('rankmath'=>'RankMath','aioseo'=>'AIOSEO','yoast'=>'Yoast','none'=>'WP Rankify')[$target] ?? 'WP Rankify';
        $ex     = get_post_meta($post->ID, '_yoast_wpseo_metadesc', true);
        if ( empty($ex) ) { $ex = get_post_meta($post->ID, 'rank_math_description', true); }
        if ( empty($ex) ) { $ex = get_post_meta($post->ID, '_aioseo_description', true); }
        $el  = mb_strlen($ex);
        $ec  = ($el>=140&&$el<=160)?'#22c55e':($el>0?'#f59e0b':'#ef4444');

        echo '<div id="aije-meta-box" style="margin-top:16px;padding-top:14px;border-top:1px solid #eee;">';
        echo '<div style="font-size:11px;font-weight:600;color:#555;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px;">Meta-Description Generator</div>';
        // Auch eigenen Fallback-Key lesen
        if ( empty($ex) ) { $ex = get_post_meta($post->ID, '_aije_metadesc', true); $el = mb_strlen($ex); }

        if ( ! empty($ex) ) {
            echo '<div id="aije-meta-status-box" style="background:#f8f8f8;border:1px solid #eee;border-radius:5px;padding:8px 10px;margin-bottom:10px;">';
            echo '<div style="display:flex;justify-content:space-between;font-size:11px;color:#888;margin-bottom:4px;">';
            echo '<span>Aktuelle Meta (' . esc_html($tl) . ')</span>';
            echo '<span id="aije-current-meta-len" style="color:' . esc_attr($ec) . ';font-weight:600;">' . $el . ' Zeichen</span>';
            echo '</div>';
            echo '<div id="aije-current-meta-display" style="font-size:11px;color:#333;line-height:1.5;">' . esc_html(mb_substr($ex,0,120)) . ($el>120?'...':'') . '</div>';
            echo '</div>';
        } else {
            echo '<div id="aije-meta-empty-hint" style="background:#fff8f0;border:1px solid #fed7aa;border-radius:5px;padding:8px 10px;margin-bottom:10px;font-size:11px;color:#92400e;">';
            echo 'Noch keine Meta-Description vorhanden.';
            if ( ! defined('WPSEO_VERSION') && ! defined('RANK_MATH_VERSION') && ! defined('AIOSEO_VERSION') ) {
                echo ' <em>(Kein SEO-Plugin erkannt – Meta wird direkt gespeichert)</em>';
            }
            echo '</div>';
        }
        echo '<button type="button" id="aije-meta-gen-btn"
            data-post-id="' . esc_attr($post->ID) . '"
            data-nonce="' . esc_attr($nonce) . '"
            data-target="' . esc_attr($target) . '"
            style="width:100%;padding:8px;background:#f29400;color:#fff;border:none;border-radius:5px;font-size:12px;font-weight:600;cursor:pointer;margin-bottom:8px;">
            Meta-Descriptions vorschlagen
        </button>';
        echo '<div id="aije-meta-loading" style="display:none;text-align:center;padding:10px;font-size:12px;color:#888;">Analysiere Beitrag...</div>';
        echo '<div id="aije-meta-results" style="display:none;"></div>';
        echo '</div>';
        ?>
<script>
(function(){
var btn=document.getElementById('aije-meta-gen-btn');
var load=document.getElementById('aije-meta-loading');
var res=document.getElementById('aije-meta-results');
if(!btn)return;

function aije_update_meta_box(text){
    var len=text.length;
    var lc=(len>=140&&len<=160)?'#22c55e':(len>=120?'#f59e0b':'#ef4444');
    var preview=text.substring(0,120)+(len>120?'...':'');
    var box=document.getElementById('aije-meta-status-box');
    if(!box){
        box=document.createElement('div');
        box.id='aije-meta-status-box';
        box.style.cssText='background:#f8f8f8;border:1px solid #eee;border-radius:5px;padding:8px 10px;margin-bottom:10px;';
        var row=document.createElement('div');
        row.style.cssText='display:flex;justify-content:space-between;align-items:center;';
        var disp=document.createElement('div');
        disp.id='aije-current-meta-display';
        disp.style.cssText='font-size:11px;color:#333;line-height:1.5;flex:1;';
        var lenEl=document.createElement('div');
        lenEl.id='aije-current-meta-len';
        lenEl.style.cssText='font-size:11px;font-weight:600;white-space:nowrap;margin-left:8px;';
        row.appendChild(disp);
        row.appendChild(lenEl);
        box.appendChild(row);
        btn.parentNode.insertBefore(box,btn);
    }
    var dispEl=document.getElementById('aije-current-meta-display');
    var lenEl2=document.getElementById('aije-current-meta-len');
    if(dispEl){dispEl.textContent=preview;}
    if(lenEl2){lenEl2.textContent=len+' Zeichen';lenEl2.style.color=lc;}
    var hint=document.getElementById('aije-meta-empty-hint');
    if(hint){hint.remove();}
    // React-kompatibler Setter: funktioniert mit Yoast, RankMath und klassischen Feldern
    // Yoast Meta Description sofort aktualisieren
    // Yoast rendert die Textarea mit id='yoast_wpseo_metadesc' im Classic Editor
    // und via React-Store im Gutenberg-Editor
    function aije_set_field(el, val){
        if(!el) return;
        try { el.value = val; } catch(e){}
        try { el.dispatchEvent(new Event('input',  {bubbles:true})); } catch(e){}
        try { el.dispatchEvent(new Event('change', {bubbles:true})); } catch(e){}
        try { el.dispatchEvent(new Event('blur',   {bubbles:true})); } catch(e){}
    }

    // 1. Classic Editor: Standard Yoast Textarea
    var yoastClassic = document.getElementById('yoast_wpseo_metadesc');
    aije_set_field(yoastClassic, text);

    // 2. Gutenberg: Yoast speichert im wp.data Store
    try {
        if(window.wp && wp.data && wp.data.select('yoast-seo/editor')){
            wp.data.dispatch('yoast-seo/editor').updateSeoAnalysis && 
            wp.data.dispatch('yoast-seo/editor').setMetaDescriptionForAnalysis &&
            wp.data.dispatch('yoast-seo/editor').setMetaDescriptionForAnalysis(text);
        }
    } catch(e){}

    // 3. Gutenberg: Yoast hidden input/textarea (neuere Versionen)
    var yoastSelectors = [
        '#yoast_wpseo_metadesc',
        '.yoast-field-group__inputfield[id*="metadesc"]',
        'textarea[id*="metadesc"]',
        'input[id*="metadesc"]',
        '#yoast-google-preview-description-metabox'
    ];
    yoastSelectors.forEach(function(sel){
        document.querySelectorAll(sel).forEach(function(el){
            aije_set_field(el, text);
        });
    });

    // 4. RankMath
    ['[name="rank_math_description"]','#rank-math-metabox-description'].forEach(function(sel){
        var el=document.querySelector(sel);
        aije_set_field(el,text);
    });

    // 5. AIOSEO
    var aioseo=document.querySelector('[name="aioseo_description"], .aioseo-meta-description textarea');
    aije_set_field(aioseo,text);
}

btn.addEventListener('click',function(){
    btn.disabled=true;btn.style.opacity='.6';
    load.style.display='block';res.style.display='none';res.innerHTML='';
    var fd=new FormData();
    fd.append('action','aije_generate_meta');
    fd.append('nonce',btn.dataset.nonce);
    fd.append('post_id',btn.dataset.postId);
    fetch(ajaxurl,{method:'POST',body:fd,credentials:'same-origin'})
    .then(function(r){return r.json();})
    .then(function(data){
        load.style.display='none';btn.disabled=false;btn.style.opacity='1';
        btn.textContent='Neu vorschlagen';
        if(!data.success){
            res.style.display='block';
            res.innerHTML='<div style="background:#fef2f2;border:1px solid #fecaca;border-radius:5px;padding:10px;font-size:12px;color:#dc2626;">'+esc(data.data.msg||'Fehler')+'</div>';
            return;
        }
        var variants=data.data.variants||[];
        var target=data.data.target||btn.dataset.target;
        var postId=data.data.post_id||btn.dataset.postId;
        var nonce=btn.dataset.nonce;
        var colors=['#3b82f6','#8b5cf6','#f59e0b','#f29400'];
        var tl={yoast:'Yoast',rankmath:'RankMath',aioseo:'AIOSEO'}[target]||'Speichern';
        var html='';
        variants.forEach(function(v,i){
            var chars=v.chars||v.text.length;
            var cc=(chars>=140&&chars<=160)?'#22c55e':(chars>=120?'#f59e0b':'#ef4444');
            var sc=(v.score>=80)?'#22c55e':(v.score>=50?'#f59e0b':'#ef4444');
            html+='<div style="border:1px solid #e5e7eb;border-radius:6px;padding:10px;margin-bottom:8px;background:#fff;">';
            html+='<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;">';
            html+='<span style="font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:'+colors[i]+';">'+esc(v.strategy)+'</span>';
            html+='<div style="display:flex;gap:6px;"><span style="font-size:10px;color:'+cc+';font-weight:600;">'+chars+' Zeichen</span><span style="font-size:10px;color:'+sc+';font-weight:600;">'+v.score+' Pkt</span></div></div>';
            html+='<div style="font-size:12px;color:#333;line-height:1.55;margin-bottom:8px;">'+esc(v.text)+'</div>';
            html+='<div style="display:flex;gap:6px;">';
            html+='<button type="button" class="aije-mc" data-text="'+ea(v.text)+'" style="flex:1;padding:5px;background:#f3f4f6;border:1px solid #e5e7eb;border-radius:4px;font-size:11px;cursor:pointer;color:#555;">Kopieren</button>';
            html+='<button type="button" class="aije-ms" data-text="'+ea(v.text)+'" data-target="'+ea(target)+'" data-pid="'+ea(postId)+'" data-nonce="'+ea(nonce)+'" style="flex:2;padding:5px;background:#f29400;color:#fff;border:none;border-radius:4px;font-size:11px;font-weight:600;cursor:pointer;">In '+tl+' übernehmen</button>';
            html+='</div></div>';
        });
        res.innerHTML=html;res.style.display='block';
        res.querySelectorAll('.aije-mc').forEach(function(b){
            b.addEventListener('click',function(){
                navigator.clipboard.writeText(b.dataset.text).then(function(){
                    b.textContent='Kopiert!';setTimeout(function(){b.textContent='Kopieren';},2000);
                });
            });
        });
        res.querySelectorAll('.aije-ms').forEach(function(b){
            b.addEventListener('click',function(){
                var theText=b.dataset.text;
                b.disabled=true;b.textContent='Wird gespeichert...';
                var fd2=new FormData();
                fd2.append('action','aije_save_meta');
                fd2.append('nonce',b.dataset.nonce);
                fd2.append('post_id',b.dataset.pid);
                fd2.append('meta_text',theText);
                fd2.append('target',b.dataset.target);
                fetch(ajaxurl,{method:'POST',body:fd2,credentials:'same-origin'})
                .then(function(r){ return r.text(); })
                .then(function(raw){
                    var r2;
                    try{ r2=JSON.parse(raw); }
                    catch(e){ r2={success:false,data:{msg:'PHP-Fehler: '+raw.substring(0,300)}}; }
                    if(r2 && r2.success){
                        b.textContent='✓ Gespeichert!';
                        b.style.background='#22c55e';
                        aije_update_meta_box(theText);
                        // Eigene WP Rankify Textarea aktualisieren damit beim Post-Save der richtige Wert gesendet wird
                        var ownTextarea = document.getElementById('aije_meta_desc');
                        if(ownTextarea){ ownTextarea.value = theText; }
                        // Hinweis-Banner anzeigen
                        var banner = document.getElementById('aije-meta-banner');
                        if(!banner){
                            banner = document.createElement('div');
                            banner.id = 'aije-meta-banner';
                            banner.style.cssText = 'margin-top:8px;padding:10px 12px;background:#fff8e1;border:1px solid #f29400;border-radius:6px;font-size:11px;color:#7a4f00;line-height:1.5;';
                            document.getElementById('aije-meta-box').appendChild(banner);
                        }
                        banner.innerHTML = '✅ Meta-Description gespeichert.<br>Bitte klicke auf <strong>„Aktualisieren"</strong> in WordPress damit Yoast den neuen Wert anzeigt.';
                        banner.style.display = 'block';
                    }else{
                        var msg=(r2&&r2.data&&r2.data.msg)?r2.data.msg:'Unbekannter Fehler';
                        b.textContent='Fehler: '+msg.substring(0,30);
                        b.style.background='#ef4444';
                        b.disabled=false;
                        console.error('AIJE Save Fehler:',msg,r2);
                    }
                })
                .catch(function(e){
                    b.textContent='Fehler';
                    b.style.background='#ef4444';
                    b.disabled=false;
                    console.error('AIJE fetch error:',e);
                    alert('AIJE Fetch-Fehler: ' + e);
                });
            });
        });
    })
    .catch(function(){
        load.style.display='none';btn.disabled=false;btn.style.opacity='1';
        res.style.display='block';
        res.innerHTML='<div style="color:#dc2626;font-size:12px;padding:8px;">Verbindungsfehler.</div>';
    });
});
function esc(s){return String(s).replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');}
function ea(s){return String(s).replace(/"/g,'&quot;').replace(/'/g,'&#39;');}
})();
</script>
        <?php
    }


    /* ===== Eigene SEO-Meta-Box ===== */

    public function add_seo_metabox() {
        $o      = $this->get_opts();
        $choice = $o['seo_plugin'] ?? 'auto';

        // Box anzeigen wenn:
        // a) explizit 'own' gewählt, ODER
        // b) 'auto' und kein SEO-Plugin installiert
        $resolved = $this->get_active_seo_plugin();
        if ( $resolved !== 'own' ) { return; }

        // Warnung wenn ein SEO-Plugin noch aktiv ist
        $conflict = '';
        if ( defined('WPSEO_VERSION') )     { $conflict = 'Yoast SEO'; }
        if ( defined('RANK_MATH_VERSION') ) { $conflict = 'RankMath'; }
        if ( defined('AIOSEO_VERSION') )    { $conflict = 'AIOSEO'; }

        $types = $o['enabled_post_types'];
        foreach ( $types as $t ) {
            add_meta_box(
                'aije_seo_meta',
                'WP Rankify – SEO' . ( $conflict ? ' ⚠ Konflikt mit ' . $conflict : '' ),
                array( $this, 'render_seo_metabox' ),
                $t, 'normal', 'high',
                array( 'conflict' => $conflict )
            );
        }
    }

    public function render_seo_metabox( $post ) {
        wp_nonce_field( 'aije_seo_meta', 'aije_seo_meta_nonce' );

        // Konflikt-Warnung wenn anderes SEO-Plugin aktiv
        $conflict = '';
        if ( defined('WPSEO_VERSION') )     { $conflict = 'Yoast SEO'; }
        if ( defined('RANK_MATH_VERSION') ) { $conflict = 'RankMath'; }
        if ( defined('AIOSEO_VERSION') )    { $conflict = 'AIOSEO'; }

        if ( $conflict ) {
            echo '<div style="background:#fff8e1;border:1px solid #f29400;border-radius:6px;padding:10px 14px;margin-bottom:14px;font-size:12px;">';
            echo '⚠ <strong>' . esc_html($conflict) . ' ist noch aktiv.</strong> ';
            echo 'Beide Plugins verwalten die Meta-Description. Deaktiviere ' . esc_html($conflict) . ' oder wähle in den ';
            echo '<a href="' . esc_url(admin_url('tools.php?page=aije-lite&tab=settings')) . '">WP Rankify Einstellungen</a> ';
            echo '„Auto-Erkennung" damit ' . esc_html($conflict) . ' übernimmt.';
            echo '</div>';
        }

        $seo_title = get_post_meta( $post->ID, '_aije_seo_title',  true );
        $meta_desc = get_post_meta( $post->ID, '_aije_metadesc',   true );
        $robots    = get_post_meta( $post->ID, '_aije_robots',     true ) ?: 'index,follow';
        $canonical = get_post_meta( $post->ID, '_aije_canonical',  true ) ?: get_permalink( $post->ID );

        $title_len = mb_strlen( $seo_title );
        $desc_len  = mb_strlen( $meta_desc );
        $title_col = ( $title_len >= 50 && $title_len <= 65 ) ? '#22c55e' : ( $title_len > 0 ? '#f59e0b' : '#ef4444' );
        $desc_col  = ( $desc_len >= 120 && $desc_len <= 160 ) ? '#22c55e' : ( $desc_len  > 0 ? '#f59e0b' : '#ef4444' );

        echo '<div style="padding:12px 0;">';

        // SEO-Titel
        echo '<div style="margin-bottom:14px;">';
        echo '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:5px;">';
        echo '<label style="font-weight:600;font-size:12px;">SEO-Titel</label>';
        echo '<span id="aije-title-len" style="font-size:11px;font-weight:600;color:' . esc_attr($title_col) . ';">' . $title_len . ' / 65 Zeichen</span>';
        echo '</div>';
        echo '<input type="text" name="aije_seo_title" id="aije_seo_title" value="' . esc_attr($seo_title) . '" style="width:100%;padding:7px 10px;border:1px solid #ddd;border-radius:5px;font-size:13px;" placeholder="SEO-Titel (50–65 Zeichen)" />';
        echo '</div>';

        // Meta-Description
        echo '<div style="margin-bottom:14px;">';
        echo '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:5px;">';
        echo '<label style="font-weight:600;font-size:12px;">Meta-Description</label>';
        echo '<span id="aije-desc-len" style="font-size:11px;font-weight:600;color:' . esc_attr($desc_col) . ';">' . $desc_len . ' / 160 Zeichen</span>';
        echo '</div>';
        echo '<textarea name="aije_meta_desc" id="aije_meta_desc" rows="3" style="width:100%;padding:7px 10px;border:1px solid #ddd;border-radius:5px;font-size:13px;resize:vertical;" placeholder="Meta-Description (120–160 Zeichen)">' . esc_textarea($meta_desc) . '</textarea>';
        echo '</div>';

        // Google-Vorschau
        if ( ! empty($seo_title) || ! empty($meta_desc) ) {
            $preview_title = $seo_title ?: get_the_title($post);
            $preview_desc  = $meta_desc ?: '';
            $preview_url   = get_permalink($post->ID);
            echo '<div style="background:#f8f9fa;border:1px solid #e5e7eb;border-radius:8px;padding:12px 14px;margin-bottom:14px;">';
            echo '<div style="font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:#888;margin-bottom:8px;">Google-Vorschau</div>';
            echo '<div style="font-size:12px;color:#202124;font-family:arial,sans-serif;">';
            echo '<div style="color:#1a0dab;font-size:18px;line-height:1.2;margin-bottom:2px;">' . esc_html( mb_substr($preview_title,0,65) ) . '</div>';
            echo '<div style="color:#006621;font-size:12px;margin-bottom:2px;">' . esc_url($preview_url) . '</div>';
            echo '<div style="color:#545454;font-size:13px;line-height:1.4;">' . esc_html( mb_substr($preview_desc,0,160) ) . '</div>';
            echo '</div></div>';
        }

        // Robots + Canonical nebeneinander
        echo '<div style="display:grid;grid-template-columns:1fr 1fr;gap:12px;">';

        echo '<div>';
        echo '<label style="font-weight:600;font-size:12px;display:block;margin-bottom:5px;">Robots</label>';
        echo '<select name="aije_robots" style="width:100%;padding:7px 10px;border:1px solid #ddd;border-radius:5px;font-size:13px;">';
        $robot_opts = array(
            'index,follow'     => 'index, follow (Standard)',
            'noindex,follow'   => 'noindex, follow',
            'index,nofollow'   => 'index, nofollow',
            'noindex,nofollow' => 'noindex, nofollow',
        );
        foreach ( $robot_opts as $val => $label ) {
            echo '<option value="' . esc_attr($val) . '" ' . selected($robots,$val,false) . '>' . esc_html($label) . '</option>';
        }
        echo '</select>';
        echo '</div>';

        echo '<div>';
        echo '<label style="font-weight:600;font-size:12px;display:block;margin-bottom:5px;">Canonical URL</label>';
        echo '<input type="url" name="aije_canonical" value="' . esc_attr($canonical) . '" style="width:100%;padding:7px 10px;border:1px solid #ddd;border-radius:5px;font-size:13px;" />';
        echo '</div>';

        echo '</div>'; // grid
        echo '</div>'; // padding

        // Live-Zähler JS
        ?>
<script>
(function(){
    function aije_count(fieldId, counterId, max, warn, good) {
        var f = document.getElementById(fieldId);
        var c = document.getElementById(counterId);
        if (!f || !c) return;
        f.addEventListener('input', function() {
            var len = f.value.length;
            c.textContent = len + ' / ' + max + ' Zeichen';
            c.style.color = (len >= good && len <= max) ? '#22c55e' : (len >= warn ? '#f59e0b' : '#ef4444');
        });
    }
    aije_count('aije_seo_title',  'aije-title-len', 65,  35, 50);
    aije_count('aije_meta_desc',  'aije-desc-len',  160, 80, 120);
})();
</script>
        <?php
    }

    public function save_seo_metabox( $post_id ) {
        if ( ! isset($_POST['aije_seo_meta_nonce']) ) { return; }
        if ( ! wp_verify_nonce( wp_unslash($_POST['aije_seo_meta_nonce']), 'aije_seo_meta' ) ) { return; }
        if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) { return; }
        if ( ! current_user_can('edit_post', $post_id) ) { return; }

        if ( isset($_POST['aije_seo_title']) ) {
            update_post_meta( $post_id, '_aije_seo_title', sanitize_text_field( wp_unslash($_POST['aije_seo_title']) ) );
        }
        if ( isset($_POST['aije_meta_desc']) ) {
            update_post_meta( $post_id, '_aije_metadesc', sanitize_textarea_field( wp_unslash($_POST['aije_meta_desc']) ) );
        }
        if ( isset($_POST['aije_robots']) ) {
            $allowed = array('index,follow','noindex,follow','index,nofollow','noindex,nofollow');
            $robots  = sanitize_text_field( wp_unslash($_POST['aije_robots']) );
            update_post_meta( $post_id, '_aije_robots', in_array($robots,$allowed,true) ? $robots : 'index,follow' );
        }
        if ( isset($_POST['aije_canonical']) ) {
            update_post_meta( $post_id, '_aije_canonical', esc_url_raw( wp_unslash($_POST['aije_canonical']) ) );
        }
    }

    public function get_opts_public() { return $this->get_opts(); }

    private function get_opts() {
        $o = get_option(self::OPT_KEY, array());
        if (!is_array($o)) {
            $o = array();
        }
        $defaults = self::defaults();
        foreach ($defaults as $k => $v) {
            if (!isset($o[$k])) {
                $o[$k] = $v;
            }
        }
        $o['enabled_post_types'] = array_values(array_filter(array_map('sanitize_key', (array) $o['enabled_post_types'])));
        $o['enable_schema']      = !empty($o['enable_schema']) ? 1 : 0;
        $o['minify']             = !empty($o['minify']) ? 1 : 0;
        $o['acf_include']        = !empty($o['acf_include']) ? 1 : 0;
        $o['cron_enabled']       = !empty($o['cron_enabled']) ? 1 : 0;
        $o['cron_frequency']     = in_array($o['cron_frequency'], array('daily', 'weekly'), true) ? $o['cron_frequency'] : 'daily';
        $o['ping_enabled']       = !empty($o['ping_enabled']) ? 1 : 0;
        $o['ping_urls']          = is_string($o['ping_urls']) ? $o['ping_urls'] : '';
        $o['ping_secret']        = is_string($o['ping_secret']) ? $o['ping_secret'] : '';
        $o['ping_timeout']       = max(2, (int) $o['ping_timeout']);
        $o['ping_retry']         = !empty($o['ping_retry']) ? 1 : 0;
        if (!isset($o['openai_api_key'])) {
            $o['openai_api_key'] = '';
        }
        // Score-Preset
        $valid_presets = array( 'ymyl', 'standard', 'ecommerce', 'custom' );
        $o['score_preset'] = in_array( $o['score_preset'] ?? 'standard', $valid_presets, true )
            ? $o['score_preset']
            : 'standard';
        $o['score_weight_content']   = max( 5, (int) ( $o['score_weight_content']   ?? 35 ) );
        $o['score_weight_eeat']      = max( 5, (int) ( $o['score_weight_eeat']      ?? 30 ) );
        $o['score_weight_technical'] = max( 5, (int) ( $o['score_weight_technical'] ?? 20 ) );
        $o['score_weight_linking']   = max( 5, (int) ( $o['score_weight_linking']   ?? 15 ) );
        $valid_seo = array( 'auto', 'yoast', 'rankmath', 'aioseo', 'own' );
        $o['seo_plugin'] = in_array( $o['seo_plugin'] ?? 'auto', $valid_seo, true )
            ? $o['seo_plugin'] : 'auto';
        return $o;
    }


    // =========================================================================
    // Tiefe Beratungs-Engine: kontextuelle Handlungsempfehlungen pro Issue
    // =========================================================================

    /**
     * Erzeugt für jedes Issue einen vollständigen Beratungs-Datensatz,
     * der im Fullscreen-Overlay angezeigt wird.
     * Alle Texte sind auf den konkreten Beitrag zugeschnitten.
     *
     * @param  array   $issue   Issue-Array aus calculate_ai_analysis()
     * @param  WP_Post $post    Aktueller Beitrag für Kontext
     * @param  array   $analysis  Vollständige Analyse-Daten
     * @return array   Beratungs-Datensatz
     */
    /**
     * Findet thematisch passende Beitraege per Keyword-Extraktion.
     * Extrahiert bedeutungstragende Woerter aus Titel + Content des aktuellen Beitrags,
     * sucht damit in anderen Beitraegen und rankt nach Trefferueberschneidung.
     *
     * @param  WP_Post $post   Aktueller Beitrag (wird ausgeschlossen)
     * @param  int     $limit  Max. Anzahl Vorschlaege
     * @return array           Array mit id, title, url, score, excerpt
     */

    /**
     * Schnelle Relevanzprüfung zwischen zwei Beiträgen.
     * Zählt gemeinsame bedeutungstragende Keywords ohne WP_Query.
     * Deutlich leichter als find_related_posts() – geeignet für AJAX.
     *
     * @param  WP_Post $post       Quell-Beitrag
     * @param  int     $target_id  Ziel-Beitrag ID
     * @return int                 Score (0 = nicht relevant)
     */
    private function quick_relevance_score( $post, $target_id ) {

        $target = get_post( $target_id );
        if ( ! $target ) { return 0; }

        $stopwords = array(
            'der','die','das','den','dem','des','ein','eine','einer','eines',
            'und','oder','aber','wenn','weil','dass','dann','ist','sind',
            'hat','haben','wird','werden','kann','muss','sein','nicht','auch',
            'noch','nur','sehr','mehr','alle','hier','dort','mit','von','zu',
            'bei','auf','aus','nach','the','and','for','with','are','was',
        );

        // Keywords aus Quell-Beitrag (nur Titel + erste 500 Zeichen)
        $source_text = mb_strtolower(
            get_the_title( $post ) . ' ' .
            mb_substr( wp_strip_all_tags( $post->post_content ), 0, 500 )
        );
        $source_words = array_unique( array_filter(
            preg_split( '/\s+/', $source_text, -1, PREG_SPLIT_NO_EMPTY ),
            function( $w ) use ( $stopwords ) {
                return mb_strlen( $w ) >= 5 && ! in_array( $w, $stopwords );
            }
        ));

        // Keywords aus Ziel-Beitrag (nur Titel + erste 300 Zeichen)
        $target_text = mb_strtolower(
            get_the_title( $target_id ) . ' ' .
            mb_substr( wp_strip_all_tags( $target->post_content ), 0, 300 )
        );
        $target_words = array_unique( array_filter(
            preg_split( '/\s+/', $target_text, -1, PREG_SPLIT_NO_EMPTY ),
            function( $w ) use ( $stopwords ) {
                return mb_strlen( $w ) >= 5 && ! in_array( $w, $stopwords );
            }
        ));

        // Schnittmenge = Score
        $common = array_intersect( $source_words, $target_words );
        return count( $common );
    }

    private function find_related_posts( $post, $limit = 6 ) {

        $stopwords = array(
            'der','die','das','den','dem','des','ein','eine','einer','eines',
            'und','oder','aber','doch','wenn','weil','dass','damit','dann',
            'ist','sind','war','waren','hat','haben','wird','werden','wurde',
            'worden','kann','muss','soll','darf','will','sein','nicht',
            'auch','noch','nur','schon','sehr','mehr','viel','alle','beide',
            'hier','dort','jetzt','wann','wie','was','wer','wo','warum',
            'ich','du','er','sie','es','wir','ihr','man','sich','ihn','ihm',
            'mit','von','zu','bei','in','an','auf','fuer','aus','nach','ueber',
            'unter','vor','hinter','zwischen','durch','ohne','um','bis','seit',
            'this','that','with','from','have','will','your','they','their',
            'been','were','would','could','should','which','there','these',
            'what','when','where','who','how','more','also','some','are',
            'was','has','not','but','and','for','the','you','can',
        );

        // Keywords aus aktuellem Beitrag extrahieren
        $source_text  = get_the_title( $post ) . ' ' . wp_strip_all_tags( $post->post_content );
        $source_text  = mb_strtolower( $source_text );
        $source_text  = preg_replace( '/[^a-z\xc3\xa4\xc3\xb6\xc3\xbc\xc3\x9f\s]/u', ' ', $source_text );
        $source_words = preg_split( '/\s+/', $source_text, -1, PREG_SPLIT_NO_EMPTY );

        $source_words = array_filter( $source_words, function( $w ) use ( $stopwords ) {
            return mb_strlen( $w ) >= 4 && ! in_array( $w, $stopwords );
        });

        $freq = array_count_values( $source_words );
        arsort( $freq );
        $keywords = array_keys( array_slice( $freq, 0, 20, true ) );

        if ( empty( $keywords ) ) { return array(); }

        $o          = $this->get_opts();
        $post_types = $o['enabled_post_types'];
        $candidates = array();

        // Suche mit Top-3-Keywords
        foreach ( array_slice( $keywords, 0, 3 ) as $kw ) {
            $q = new WP_Query( array(
                'post_type'      => $post_types,
                'post_status'    => 'publish',
                'posts_per_page' => 20,
                's'              => $kw,
                'post__not_in'   => array( $post->ID ),
                'no_found_rows'  => true,
                'fields'         => 'ids',
            ) );
            foreach ( $q->posts as $id ) {
                if ( ! isset( $candidates[ $id ] ) ) { $candidates[ $id ] = 0; }
            }
        }

        // Fallback: neueste Beitraege
        if ( empty( $candidates ) ) {
            $q = new WP_Query( array(
                'post_type'      => $post_types,
                'post_status'    => 'publish',
                'posts_per_page' => 10,
                'post__not_in'   => array( $post->ID ),
                'no_found_rows'  => true,
                'fields'         => 'ids',
            ) );
            foreach ( $q->posts as $id ) { $candidates[ $id ] = 0; }
        }

        // Kandidaten ranken
        $scored = array();
        foreach ( array_keys( $candidates ) as $cid ) {
            $cp = get_post( $cid );
            if ( ! $cp ) { continue; }

            $c_text  = mb_strtolower( get_the_title( $cid ) . ' ' . wp_strip_all_tags( $cp->post_content ) );
            $c_title = mb_strtolower( get_the_title( $cid ) );
            $match   = 0;

            foreach ( $keywords as $kw ) {
                if ( mb_strpos( $c_text,  $kw ) !== false ) { $match++; }
                if ( mb_strpos( $c_title, $kw ) !== false ) { $match++; } // Titel-Bonus
            }

            if ( $match > 0 ) {
                $scored[] = array(
                    'id'      => $cid,
                    'title'   => get_the_title( $cid ),
                    'url'     => get_permalink( $cid ),
                    'score'   => $match,
                    'excerpt' => wp_trim_words( wp_strip_all_tags( $cp->post_content ), 12, '...' ),
                );
            }
        }

        usort( $scored, function( $a, $b ) { return $b['score'] <=> $a['score']; } );
        return array_slice( $scored, 0, $limit );
    }

    private function build_issue_advice( $issue, $post, $analysis ) {

        $title      = get_the_title( $post );
        $content    = $post->post_content;
        $text       = wp_strip_all_tags( $content );
        $word_count = str_word_count( $text );
        $category   = $issue['category'];
        $severity   = $issue['severity'];

        // Kontextueller Kurztitel für den Artikel
        $title_short = mb_strlen( $title ) > 50
            ? mb_substr( $title, 0, 50 ) . '…'
            : $title;

        // Severiy-Label
        $sev_label = array(
            'high'   => '🔴 Hoher Einfluss',
            'medium' => '🟡 Mittlerer Einfluss',
            'low'    => '🟢 Geringer Einfluss',
        )[ $severity ] ?? '';

        // Kategorie-Farbe
        $cat_color = array(
            'content'   => '#3498db',
            'eeat'      => '#9b59b6',
            'technical' => '#1abc9c',
            'linking'   => '#e67e22',
        )[ $category ] ?? '#999';

        // ── Beratungsinhalte nach Issue-Typ ──────────────────────────────────
        $advice = array(
            'title'      => $issue['msg'],
            'subtitle'   => $sev_label,
            'color'      => $cat_color,
            'why'        => '',
            'situation'  => '',
            'example'    => '',
            'checklist'  => array(),
            'tip'        => '',
        );

        // Wortanzahl-Issues
        if ( strpos( $issue['msg'], 'kurz' ) !== false && $category === 'content' ) {
            $missing = max( 0, 700 - $word_count );
            $advice['why'] = 'Google bewertet Inhalte nach Tiefe und Nützlichkeit. Kurze Artikel werden oft als oberflächlich eingestuft – besonders nach dem Helpful Content Update 2023. Studien zeigen: Artikel über 1.000 Wörter ranken im Schnitt deutlich besser als kürzere Texte zum selben Thema.';
            $advice['situation'] = 'Dein Artikel „' . $title_short . '" hat aktuell ca. ' . $word_count . ' Wörter. Für eine gute Sichtbarkeit empfehlen sich mindestens 700 Wörter, für wettbewerbsstarke Themen 1.000–1.500 Wörter.';
            $advice['example'] = 'Statt: „Hier erfährst du alles über ' . $title_short . '."' . "

" . 'Besser: Beantworte 3–5 konkrete Fragen, die sich deine Leser stellen. Zum Beispiel: Was ist das genau? Für wen eignet es sich? Was muss ich beachten? Was sind typische Fehler? Welche Alternativen gibt es?';
            $advice['checklist'] = array(
                'Überlege: Welche 3 Fragen hat der Leser nach dem Lesen dieses Artikels noch?',
                'Beantworte jede dieser Fragen in einem eigenen Abschnitt mit H2-Überschrift',
                'Füge konkrete Beispiele, Zahlen oder persönliche Erfahrungen hinzu',
                'Ziel: mindestens ' . ( $word_count + $missing ) . ' Wörter – das sind ca. ' . ceil( $missing / 5 ) . ' zusätzliche Sätze',
            );
            $advice['tip'] = 'Tipp: Schreib nicht länger um des Schreibens willen. Jeder zusätzliche Absatz sollte dem Leser einen echten Mehrwert bringen.';
        }

        // H2-Struktur
        elseif ( strpos( $issue['msg'], 'H2' ) !== false ) {
            preg_match_all( '/<h2[^>]*>(.*?)<\/h2>/si', $content, $h2_matches );
            $existing_h2 = array_map( 'strip_tags', $h2_matches[1] ?? array() );
            $h2_list = ! empty( $existing_h2 )
                ? implode( ', ', array_slice( $existing_h2, 0, 3 ) )
                : 'keine vorhanden';

            $advice['why'] = 'H2-Überschriften sind das Inhaltsverzeichnis deines Artikels – für Google UND für den Leser. Sie helfen Suchmaschinen zu verstehen, welche Teilthemen du behandelst. Ohne Struktur wird dein Artikel wie ein langer Fließtext behandelt, der schwerer einzuordnen ist.';
            $advice['situation'] = 'In „' . $title_short . '" ' . ( empty( $existing_h2 ) ? 'gibt es noch keine H2-Überschriften.' : 'gibt es erst ' . count( $existing_h2 ) . ' H2-Überschrift(en): ' . $h2_list . '.' ) . ' Für einen gut strukturierten Artikel empfehlen sich 3–5 H2-Abschnitte.';
            $advice['example'] = 'Für einen Artikel wie „' . $title_short . '" könnten sinnvolle H2-Abschnitte sein:' . "

" . '→ Was ist [Thema] – und warum ist es wichtig?' . "
" . '→ So funktioniert [Thema] in der Praxis' . "
" . '→ Die häufigsten Fehler und wie du sie vermeidest' . "
" . '→ Schritt-für-Schritt-Anleitung' . "
" . '→ Häufige Fragen (FAQ)';
            $advice['checklist'] = array(
                'Teile deinen Artikel in 3–5 logische Hauptabschnitte auf',
                'Jede H2-Überschrift sollte eine eigene Frage oder ein eigenes Teilthema behandeln',
                'Formuliere H2-Überschriften als Nutzerversprechen: Was bekommt der Leser in diesem Abschnitt?',
                'Nutze in langen Abschnitten auch H3-Unterüberschriften für weitere Struktur',
            );
            $advice['tip'] = 'SEO-Tipp: Baue das Hauptkeyword natürlich in mindestens eine H2-Überschrift ein – nicht erzwungen, sondern wo es inhaltlich passt.';
        }

        // Satzlänge / Lesbarkeit
        elseif ( strpos( $issue['msg'], 'Satz' ) !== false ) {
            $sentences = preg_split( '/[.!?]+/', $text, -1, PREG_SPLIT_NO_EMPTY );
            $sentences = array_filter( $sentences, function($s) { return str_word_count(trim($s)) > 3; } );
            $avg = count($sentences) > 0 ? round( $word_count / count($sentences) ) : 0;
            $advice['why'] = 'Lange, verschachtelte Sätze ermüden den Leser – besonders auf Mobilgeräten wo über 60% der Besucher lesen. Google misst indirekt die Absprungrate: Wenn Leser schnell abspringen weil der Text zu schwer verständlich ist, signalisiert das dem Algorithmus „nicht hilfreich".';
            $advice['situation'] = 'In „' . $title_short . '" sind deine Sätze im Schnitt ' . $avg . ' Wörter lang. Der Zielwert für gut lesbare Texte liegt bei 12–18 Wörtern pro Satz.';
            $advice['example'] = 'Vorher (zu lang): „Da die Verarbeitung von komplexen Informationen durch das menschliche Gehirn bei langen und verschachtelten Satzstrukturen deutlich länger dauert, empfiehlt es sich, Texte in kürzere Einheiten aufzuteilen."' . "

" . 'Nachher (besser): „Lange Sätze kosten Energie. Das menschliche Gehirn verarbeitet kurze Einheiten viel schneller. Deshalb: Satz aufteilen, wenn er zu lang wird."';
            $advice['checklist'] = array(
                'Lies deinen Artikel laut vor – stolperst du über Sätze? Teile sie auf.',
                'Suche nach „und", „sowie", „wobei", „welcher" – das sind oft Stellen für Satztrennungen',
                'Wechsle bewusst zwischen kurzen und mittellangen Sätzen für Rhythmus',
                'Ziel: kein Satz länger als 25 Wörter – lieber zwei kurze als einer langer',
            );
            $advice['tip'] = 'Schreib wie du sprichst. Wenn du den Satz einem Freund erklären würdest, wärst du wahrscheinlich kürzer und direkter.';
        }

        // Listen
        elseif ( strpos( $issue['msg'], 'Listen' ) !== false || strpos( $issue['msg'], 'Aufzählung' ) !== false ) {
            $advice['why'] = 'Aufzählungen erhöhen die Scannbarkeit eines Textes drastisch. Menschen lesen Artikel nicht Wort für Wort – sie scannen. Listen bleiben sofort hängen, werden öfter gelesen und erhöhen die Verweildauer. Außerdem zeigt Google Listen häufig als Featured Snippets an.';
            $advice['situation'] = 'In „' . $title_short . '" gibt es aktuell keine Aufzählungslisten. Dabei bietet fast jeder Artikel Stellen, an denen eine Liste die Information verdichtet und verständlicher macht.';
            $advice['example'] = 'Statt: „Du brauchst dafür Geduld, die richtige Ausrüstung, etwas Erfahrung und außerdem solltest du gut vorbereitet sein."' . "

" . 'Besser als Liste:' . "
" . '• Geduld und Ausdauer' . "
" . '• Die passende Ausrüstung' . "
" . '• Grundlegende Erfahrung' . "
" . '• Gute Vorbereitung';
            $advice['checklist'] = array(
                'Suche nach Stellen mit 3+ Elementen in einem Satz – das sind ideale Listen',
                'Verwende ul für ungeordnete Listen (Tipps, Vorteile, Merkmale)',
                'Verwende ol für Schritt-für-Schritt-Anleitungen mit Reihenfolge',
                'Achte darauf: jeder Listenpunkt beginnt mit einem aktiven Verb oder einem Substantiv',
            );
            $advice['tip'] = 'Google liebt Listen mit 4–8 Punkten für Featured Snippets. Formuliere die Listenüberschrift als Frage: „Was brauchst du für...?" oder „Wie funktioniert...?"';
        }

        // Absätze
        elseif ( strpos( $issue['msg'], 'Absatz' ) !== false ) {
            $para_count = count( array_filter( preg_split( '/
{2,}/', $text ) ) );
            $advice['why'] = 'Große Textblöcke ohne Absätze wirken wie eine Wand aus Text. Leser brechen hier ab – besonders auf dem Smartphone. Kurze, klar getrennte Absätze erhöhen die Lesbarkeit und signalisieren Struktur.';
            $advice['situation'] = 'Dein Artikel „' . $title_short . '" hat aktuell ca. ' . $para_count . ' Absätze. Für einen gut lesbaren Text empfehlen sich mindestens 6–8 Absätze, die jeweils 2–4 Sätze enthalten.';
            $advice['example'] = 'Grundregel: Ein Gedanke = ein Absatz.' . "

" . 'Faustregel für Absatzlänge: Wenn ein Absatz mehr als 4 Sätze hat, prüfe ob du ihn teilen kannst. Auf dem Smartphone sollte kein Absatz länger als einen Bildschirm sein.';
            $advice['checklist'] = array(
                'Teile lange Textblöcke nach jedem abgeschlossenen Gedanken auf',
                'Jeder Absatz sollte eine einzige Kernaussage haben',
                'Nutze kurze „Brücken-Sätze" zwischen Absätzen für Lesefluss',
                'Prüfe die mobile Ansicht: Sieht der Text auf dem Handy noch lesbar aus?',
            );
            $advice['tip'] = 'Schreib deinen ersten Satz jedes Absatzes so, dass jemand der nur die Erstzeilen liest trotzdem den Kerninhalt versteht.';
        }

        // E-E-A-T: Berufsbezeichnung
        elseif ( strpos( $issue['msg'], 'Berufsbezeichnung' ) !== false ) {
            $advice['why'] = 'Google bewertet seit dem E-E-A-T Update besonders stark, wer einen Artikel geschrieben hat. Bei Gesundheits-, Rechts- oder Finanzthemen (YMYL) ist die Autorenautorität ein direkter Rankingfaktor. Eine fehlende Berufsbezeichnung signalisiert: „Wir wissen nicht wer das ist."';
            $advice['situation'] = 'Der Autor dieses Artikels hat noch keine Berufsbezeichnung im Profil hinterlegt. Google sieht dann nur einen Namen – ohne Kontext über die Expertise hinter dem Inhalt von „' . $title_short . '".';
            $advice['example'] = 'Statt keiner Angabe:' . "
" . '→ „Staatlich geprüfte Hebamme" (konkret + Qualifikation)' . "
" . '→ „Ernährungsberaterin (DGE)" (konkret + Zertifizierung)' . "
" . '→ „Fachanwalt für Arbeitsrecht" (konkret + Fachgebiet)' . "

" . 'Vermeide vage Bezeichnungen wie „Experte", „Berater" oder „Spezialist" ohne Kontext.';
            $advice['checklist'] = array(
                'Gehe zu Benutzer → Profil → Experten-Profil (Bereich weiter unten)',
                'Trage deine genaue Berufsbezeichnung ein – so wie sie auf deinem Zeugnis/Diplom steht',
                'Optional: Ergänze Zertifizierungen oder Fachgebiete in Klammern',
                'Speichern – das Plugin trägt die Bezeichnung automatisch in das Schema.org Person-Markup ein',
            );
            $advice['tip'] = 'Google prüft die Berufsbezeichnung im Kontext anderer Signale. Je konsistenter sie mit deiner Website, deinen Social-Media-Profilen und deiner Biografie übereinstimmt, desto stärker der Vertrauenseffekt.';
        }

        // E-E-A-T: Fachbiografie
        elseif ( strpos( $issue['msg'], 'Fachbiografie' ) !== false || strpos( $issue['msg'], 'biografie' ) !== false ) {
            $expertise = get_user_meta( $post->post_author, self::USER_META_EXPERTISE, true );
            $bio_len   = mb_strlen( $expertise );
            $advice['why'] = 'Die Autorenbiografie ist das stärkste E-E-A-T-Signal nach der Berufsbezeichnung. Sie erklärt nicht nur wer jemand ist, sondern warum er oder sie die Autorität hat, über dieses Thema zu schreiben. Google nutzt Biografie-Signale um Inhalte als vertrauenswürdig einzustufen.';
            $advice['situation'] = $bio_len > 0
                ? 'Die aktuelle Biografie ist mit ' . $bio_len . ' Zeichen noch zu kurz. Google und Leser erwarten mindestens 80–150 Zeichen – eine kurze, substanzielle Aussage über die Expertise.'
                : 'Für den Autor dieses Artikels ist noch keine Fachbiografie hinterlegt. Das fehlt komplett im Schema.org-Markup.';
            $advice['example'] = 'Zu kurz: „Ich bin Hebamme und helfe Familien."' . "

" . 'Besser: „Staatlich geprüfte Hebamme mit 12 Jahren Erfahrung in München. Schwerpunkt: natürliche Geburtsvorbereitung und Wochenbettbegleitung. Autorin von zwei Fachbüchern zum Thema Stillberatung."';
            $advice['checklist'] = array(
                'Benutzer → Profil → Experten-Profil → Fachbiografie ausfüllen',
                'Nenne: Qualifikation + Jahre Erfahrung + konkretes Fachgebiet',
                'Optional: Publikationen, Auszeichnungen, Zusatzqualifikationen',
                'Ziel: 100–200 Zeichen – prägnant und substanziell',
            );
            $advice['tip'] = 'Schreib die Biografie in der dritten Person – das wirkt professioneller und eignet sich besser für automatische Schema-Ausgabe.';
        }

        // E-E-A-T: SameAs
        elseif ( strpos( $issue['msg'], 'SameAs' ) !== false ) {
            $advice['why'] = 'SameAs-Links verbinden dein WordPress-Profil mit externen Autoritätsquellen. Google nutzt diese Verbindungen um zu verifizieren, dass der Autor eine reale Fachperson ist – nicht eine anonyme Stimme im Internet. LinkedIn, Instagram und Wikipedia-Einträge sind dabei besonders wertvoll.';
            $advice['situation'] = 'Für den Autor von „' . $title_short . '" sind noch keine externen Profillinks hinterlegt. Ohne SameAs-Links fehlt Google die Möglichkeit, die Autorität des Autors extern zu verifizieren.';
            $advice['example'] = 'Empfohlene SameAs-Links in Reihenfolge der SEO-Wirkung:' . "
" . '1. LinkedIn-Profil (stärkstes Autorität-Signal)' . "
" . '2. Instagram mit fachlichem Content' . "
" . '3. XING-Profil' . "
" . '4. Google Scholar / ResearchGate (für Wissenschaftler)' . "
" . '5. Eigene Praxis-/Unternehmenswebsite';
            $advice['checklist'] = array(
                'Benutzer → Profil → Experten-Profil → SameAs-Links',
                'Eine URL pro Zeile eintragen',
                'Priorität: LinkedIn + Instagram + eigene Website = 3 Links = maximaler Score-Bonus',
                'Stelle sicher dass der Name auf den Profilen identisch ist',
            );
            $advice['tip'] = 'Konsistenz ist entscheidend: Der Name, die Berufsbezeichnung und das Profilbild sollten auf allen verlinkten Profilen übereinstimmen. Google vergleicht diese Signale aktiv.';
        }

        // E-E-A-T: Externe Quellen
        elseif ( strpos( $issue['msg'], 'extern' ) !== false || strpos( $issue['msg'], 'Quell' ) !== false ) {
            $advice['why'] = 'Externe Links zu seriösen Quellen signalisieren Google: „Dieser Autor hat recherchiert und belegt seine Aussagen." Das erhöht die Glaubwürdigkeit des Inhalts – besonders bei medizinischen, rechtlichen oder wissenschaftlichen Themen. Fehlende Quellenangaben wirken bei Fachthemen wie unbelegte Behauptungen.';
            $advice['situation'] = 'In „' . $title_short . '" gibt es noch keine externen Quellenlinks. Das ist besonders bei einem Fachthema wie diesem eine verpasste Chance für Autorität und Vertrauen.';
            $advice['example'] = 'Gute externe Quellen je nach Thema:' . "
" . '• Medizin: PubMed, WHO, Robert Koch Institut, Bundeszentrale für gesundheitliche Aufklärung' . "
" . '• Recht: Gesetze im Internet (gesetze-im-internet.de), Bundesjustizamt' . "
" . '• Statistiken: Destatis, Eurostat, Statista' . "
" . '• Allgemein: Wikipedia als Kontext-Link ist akzeptabel, aber nicht als Hauptquelle';
            $advice['checklist'] = array(
                'Identifiziere 1–3 konkrete Behauptungen in deinem Artikel, die eine Quelle verdienen',
                'Verlinke direkt auf die Quelle mit beschreibendem Ankertext (nicht „hier klicken")',
                'Nutze das title-Attribut für Quellenangaben: <a href="..." title="Studie: ...">',
                'Externe Links können mit target="_blank" rel="noopener noreferrer" in neuem Tab öffnen',
            );
            $advice['tip'] = 'Externe Links schaden deiner SEO nicht – sie stärken sie. Google interpretiert ausgehende Links zu Autoritätsquellen als positives Qualitätssignal, nicht als „Abfluss von Link-Juice".';
        }

        // Technical: Featured Image
        elseif ( strpos( $issue['msg'], 'Beitragsbild' ) !== false ) {
            $advice['why'] = 'Das Featured Image ist das erste was Nutzer sehen – in Google-Suchergebnissen, in Google Discover, beim Teilen in Social Media. Artikel ohne Featured Image werden in Google Discover praktisch nie ausgespielt und haben deutlich niedrigere Klickraten in den Suchergebnissen.';
            $advice['situation'] = 'Der Artikel „' . $title_short . '" hat noch kein Beitragsbild. Das bedeutet: kein Thumbnail in Google Discover, kein Preview-Bild beim Teilen auf LinkedIn oder WhatsApp, schwächere Klickrate in den Suchergebnissen.';
            $advice['example'] = 'Was ein gutes Featured Image ausmacht:' . "
" . '• Mindestgröße: 1200 × 630 Pixel (optimal für Social Sharing)' . "
" . '• Aussagekräftig: Das Bild erklärt auf einen Blick worum es geht' . "
" . '• Kein Stock-Foto-Klischee: Authentische Bilder performen besser' . "
" . '• Alt-Text nicht vergessen: Beschreibt das Bild für Screenreader und Google';
            $advice['checklist'] = array(
                'Beitrag öffnen → rechts „Beitragsbild" → Bild hochladen oder auswählen',
                'Bildgröße: mindestens 1200 × 630 Pixel',
                'Dateiname vor dem Upload sprechend benennen: z.B. „hebamme-geburtvorbereitung.jpg" statt „IMG_4521.jpg"',
                'Alt-Text beim Hochladen ausfüllen – beschreibe was auf dem Bild zu sehen ist',
            );
            $advice['tip'] = 'Wenn du kein eigenes Bild hast: Unsplash.com und Pexels.com bieten kostenlose, hochwertige Fotos. Suche nach deinem Hauptthema und wähle ein authentisch wirkendes Bild.';
        }

        // Technical: Alt-Texte
        elseif ( strpos( $issue['msg'], 'Alt-Text' ) !== false ) {
            preg_match_all( '/<img[^>]+>/i', $content, $imgs );
            $img_count = count( $imgs[0] );
            $advice['why'] = 'Alt-Texte erfüllen zwei Funktionen: Sie machen Bilder für Suchmaschinen lesbar (Google-Bildersuche!) und für sehbehinderte Nutzer zugänglich (Screenreader). Fehlende Alt-Texte sind verschenkte SEO-Punkte und ein Barrierefreiheits-Problem.';
            $advice['situation'] = 'In „' . $title_short . '" ' . ( $img_count > 0 ? 'fehlen bei ' . $img_count . ' Bild(ern) die Alt-Texte.' : 'sind keine Bilder vorhanden.' );
            $advice['example'] = 'Schlechter Alt-Text: „Bild1.jpg" oder „Foto"' . "

" . 'Guter Alt-Text: „Hebamme erklärt werdender Mutter die Atemlibung zur Geburtsvorbereitung"' . "

" . 'Regel: Beschreibe was auf dem Bild passiert – nicht was du dir dabei gedacht hast.';
            $advice['checklist'] = array(
                'Klicke auf jedes Bild im Editor → „Bild bearbeiten" → Alt-Text eintragen',
                'Beschreibe konkret was auf dem Bild zu sehen ist (Person, Aktion, Kontext)',
                'Baue das Hauptkeyword ein wenn es natürlich passt – nicht erzwungen',
                'Maximal 125 Zeichen – Screenreader lesen nicht mehr vor',
            );
            $advice['tip'] = 'Stelle dir vor, du beschreibst das Bild am Telefon jemandem der es nicht sehen kann. Genau das ist ein guter Alt-Text.';
        }

        // Technical: Meta-Description
        elseif ( strpos( $issue['msg'], 'Meta-Description' ) !== false || strpos( $issue['msg'], 'Meta Description' ) !== false ) {
            $meta_desc = get_post_meta( $post->ID, '_yoast_wpseo_metadesc', true );
            if ( empty( $meta_desc ) ) $meta_desc = get_post_meta( $post->ID, 'rank_math_description', true );
            if ( empty( $meta_desc ) ) $meta_desc = get_post_meta( $post->ID, '_aije_metadesc', true );
            $meta_len  = mb_strlen( $meta_desc );
            $advice['why'] = 'Die Meta-Description erscheint unter deinem Seitentitel in den Google-Suchergebnissen. Sie entscheidet ob jemand klickt oder nicht. Eine fehlende oder zu kurze Meta-Description wird oft durch Google automatisch ersetzt – und das Ergebnis ist meist schlechter als ein manuell geschriebener Text.';
            $advice['situation'] = empty( $meta_desc )
                ? 'Für „' . $title_short . '" ist noch keine Meta-Description hinterlegt. Google generiert dann automatisch einen Auszug – meistens den ersten Satz des Artikels, was selten optimal ist.'
                : 'Die Meta-Description von „' . $title_short . '" ist mit ' . $meta_len . ' Zeichen ' . ( $meta_len < 120 ? 'zu kurz (unter 120 Zeichen).' : 'zu lang (über 160 Zeichen, wird abgeschnitten).' );
            $advice['example'] = 'Für einen Artikel über „' . $title_short . '" könnte eine gute Meta-Description so aussehen:' . "

" . '„[Konkrete Zahl oder Aussage] + [Hauptnutzen für den Leser] + [Handlungsaufforderung]"' . "

" . 'Beispiel: „In diesem Artikel erfährst du 5 erprobte Methoden zur Geburtsvorbereitung – von einer staatlich geprüften Hebamme. Jetzt lesen →"';
            $advice['checklist'] = array(
                'Öffne Yoast SEO oder RankMath weiter unten im Beitrag',
                'Trage eine Meta-Description zwischen 120 und 160 Zeichen ein',
                'Baue das Hauptkeyword früh ein (idealerweise in den ersten 70 Zeichen)',
                'Formuliere einen konkreten Nutzen oder eine Handlungsaufforderung am Ende',
            );
            $advice['tip'] = 'Schreib die Meta-Description wie eine Mini-Werbeanzeige: Was bekommt der Leser wenn er klickt? Warum sollte er jetzt klicken und nicht auf das andere Ergebnis?';
        }

        // Technical: Titel
        elseif ( strpos( $issue['msg'], 'Titel' ) !== false ) {
            $tlen = mb_strlen( get_the_title( $post ) );
            $advice['why'] = 'Der Titel-Tag ist der wichtigste SEO-Faktor einer Seite. Er erscheint als blauer Link in den Suchergebnissen. Ist er zu kurz, verschenkst du Keyword-Potenzial. Ist er zu lang, schneidet Google ihn ab – und der Klickanreiz geht verloren.';
            $advice['situation'] = 'Der Titel „' . $title_short . '" hat ' . $tlen . ' Zeichen. ' . ( $tlen < 35 ? 'Das ist zu kurz – du vergibst wertvollen Platz für Keywords und Kaufargumente.' : 'Das überschreitet die empfohlene Länge von 65 Zeichen – Google schneidet ihn wahrscheinlich ab.' );
            $advice['example'] = 'Schwach: „Geburtsvorbereitung" (zu kurz, kein Nutzen)' . "

" . 'Besser: „Geburtsvorbereitung: 7 Methoden die wirklich helfen | Hebamme erklärt"' . "

" . 'Gut funktionieren: Zahlen (7 Tipps), Fragen (Wie...?), Versprechen (So funktioniert...), Zielgruppe (Für Erstgebärende)';
            $advice['checklist'] = array(
                'Ziel: 50–65 Zeichen inkl. Leerzeichen',
                'Baue das Hauptkeyword in die ersten 50 Zeichen ein',
                'Füge einen Nutzenversprechen oder eine Zahl hinzu wenn sinnvoll',
                'Prüfe mit einem Title-Tag-Vorschau-Tool (z.B. seobility.net/tools/serp-snippet-generator)',
            );
            $advice['tip'] = 'Titel mit Zahlen ("5 Methoden", "7 Tipps") haben nachweislich höhere Klickraten. Fragestellungen ("Wie...", "Was ist...") sprechen Informations-Suchende direkt an.';
        }

        // Linking: Interne Links
        elseif ( strpos( $issue['msg'], 'intern' ) !== false && $category === 'linking' ) {

            // Thematisch passende Beitraege per Keyword-Extraktion finden
            $related = $this->find_related_posts( $post, 6 );

            $advice['why'] = 'Interne Links sind das Nervensystem deiner Website. Sie verteilen Autorität zwischen deinen Seiten, helfen Google deine Website-Struktur zu verstehen und halten Leser länger auf deiner Website. Artikel ohne interne Links sind wie Inseln – sie geben ihre SEO-Kraft nicht weiter.';
            $advice['situation'] = 'Der Artikel „' . $title_short . '“ verlinkt noch auf keine anderen Seiten deiner Website. Das bedeutet: Leser, die mehr wissen wollen, verlassen deine Website. Und Google sieht keinen Kontext zu anderen Inhalten.';

            if ( ! empty( $related ) ) {
                $advice['related_posts'] = $related;
                $advice['example'] = 'Basierend auf deinem Inhalt haben wir thematisch passende Artikel gefunden (siehe Vorschlaege unten). Gute Ankertexte:' . "\n\n"
                    . '✓ „Mehr dazu: [Titel des Artikels]“' . "\n"
                    . '✓ „Wie wir in [Titel] beschreiben...“' . "\n"
                    . '✓ „Weitere Infos: [Titel des Artikels]“' . "\n\n"
                    . '✗ Vermeide: „Hier klicken“ oder „Mehr erfahren“ ohne Kontext';
            } else {
                $advice['example'] = 'Gute Ankertexte fuer interne Links:' . "\n\n"
                    . '✓ „Mehr dazu in unserem Artikel über [verwandtes Thema]“' . "\n"
                    . '✓ „Wie wir in [verlinktem Artikel] beschreiben...“' . "\n\n"
                    . '✗ Vermeide: „Hier klicken“, „Mehr erfahren“ als alleinigen Ankertext';
            }

            $advice['checklist'] = array(
                'Wähle 2–3 der unten vorgeschlagenen Artikel aus',
                'Füge die Links an thematisch passenden Stellen im Text ein',
                'Ideal: Ein Link früh im Artikel, einer am Ende als weiterführende Empfehlung',
                'Prüfe auch: Verlinken andere Artikel schon auf diesen hier? (Orphan-Content vermeiden)',
            );
            $advice['tip'] = 'Die stärksten internen Links kommen von deinen Seiten mit dem meisten Traffic. Ergänze dort Links zu neuen oder schwächeren Seiten um deren Autorität zu stärken.';
        }

        // Aktualität
        elseif ( strpos( $issue['msg'], 'aktualisiert' ) !== false ) {
            $months_ago = round( ( time() - strtotime( $post->post_modified ) ) / MONTH_IN_SECONDS );
            $advice['why'] = 'Google bevorzugt aktuellen Content – besonders in Bereichen wo sich Informationen schnell ändern. Das „Freshness"-Signal fließt direkt in das Ranking ein. Ein Artikel der seit über einem Jahr nicht angefasst wurde, verliert schrittweise an Sichtbarkeit.';
            $advice['situation'] = 'Der Artikel „' . $title_short . '" wurde zuletzt vor ca. ' . $months_ago . ' Monaten aktualisiert. In vielen Themenbereichen haben sich in dieser Zeit Fakten, Zahlen oder Empfehlungen geändert.';
            $advice['example'] = 'Was bei einer Aktualisierung wirklich zählt:' . "
" . '• Veraltete Zahlen, Statistiken oder Gesetze aktualisieren' . "
" . '• Neue wissenschaftliche Erkenntnisse einarbeiten' . "
" . '• Veraltete Links auf neue Quellen umleiten' . "
" . '• Ein kurzes Update-Datum am Anfang: „Zuletzt aktualisiert: März 2025"';
            $advice['checklist'] = array(
                'Lies den Artikel durch: Gibt es veraltete Informationen, Zahlen oder Empfehlungen?',
                'Aktualisiere mindestens 1-2 Absätze mit neuen Erkenntnissen',
                'Ergänze ein „Zuletzt aktualisiert"-Datum am Anfang des Artikels',
                'Speichere – WordPress aktualisiert den „post_modified" Timestamp automatisch',
            );
            $advice['tip'] = 'Du musst nicht alles neu schreiben. Manchmal reicht es, einen Abschnitt zu ergänzen, eine neue Studie zu verlinken oder die Einleitung zu modernisieren. Google erkennt Änderungen ab ca. 10% des Inhalts.';
        }

        // Fallback für unbekannte Issue-Typen
        else {
            $advice['why'] = 'Dieser Faktor hat direkten Einfluss auf die Sichtbarkeit und Bewertung deines Inhalts durch Suchmaschinen und KI-Systeme.';
            $advice['situation'] = $issue['msg'];
            $advice['example'] = $issue['action'] ?? '';
            $advice['checklist'] = array( $issue['action'] ?? 'Prüfe die Details und nimm die empfohlene Änderung vor.' );
            $advice['tip'] = 'Kleine Verbesserungen summieren sich. Jede behobene Issue erhöht deinen AI Readiness Score.';
        }

        return $advice;
    }

    private function calculate_ai_analysis( $post ) {

        $content    = $post->post_content;
        $text       = wp_strip_all_tags( $content );
        $word_count = str_word_count( $text );
        $issues     = array();

        // ── Hilfsdaten ────────────────────────────────────────────────────────

        preg_match_all( '/<h2[^>]*>/i', $content, $h2 );
        preg_match_all( '/<h3[^>]*>/i', $content, $h3 );
        $h2_count = count( $h2[0] );
        $h3_count = count( $h3[0] );

        // Absätze direkt aus dem HTML zählen – zuverlässiger als Newline-Split auf reinem Text,
        // weil wp_strip_all_tags() Zeilenumbrüche zwischen <p>-Tags entfernen kann.
        preg_match_all( '/<p[^>]*>(.*?)<\/p>/si', $content, $p_matches );
        $html_paras = array_filter(
            array_map( 'strip_tags', $p_matches[1] ),
            function( $p ) { return strlen( trim( $p ) ) > 20; }
        );
        $para_count = count( $html_paras );

        // Fallback: falls kein <p>-Markup vorhanden (z.B. reiner Text-Content),
        // auf Zeilenumbrüche zurückfallen
        if ( $para_count === 0 ) {
            $fallback = array_filter(
                array_map( 'trim', preg_split( '/\n{2,}/', $text ) ),
                function( $p ) { return strlen( $p ) > 20; }
            );
            $para_count = count( $fallback );
        }

        preg_match_all( '/<a[^>]+href=["\']?([^"\'> ]+)["\']?/i', $content, $link_matches );
        $internal_links = 0;
        $external_links = 0;
        // Schema-unabhängig vergleichen: http und https beide als intern erkennen
        $home_norm = preg_replace( '/^https?:/', '', home_url() ); // z.B. '//example.com'
        foreach ( $link_matches[1] as $href ) {
            $href_norm = preg_replace( '/^https?:/', '', $href );
            if ( strpos( $href_norm, $home_norm ) !== false || strpos( $href, '/' ) === 0 ) {
                $internal_links++;
            } elseif ( strpos( $href, 'http' ) === 0 ) {
                $external_links++;
            }
        }

        $has_list = ( strpos( $content, '<ul' ) !== false || strpos( $content, '<ol' ) !== false );
        $has_faq  = (bool) preg_match( '/\b(faq|häufig|frequently|fragen)\b/i', $text );

        $sentences      = preg_split( '/[.!?]+/', $text, -1, PREG_SPLIT_NO_EMPTY );
        $sentences      = array_filter( $sentences, function( $s ) { return str_word_count( trim( $s ) ) > 2; } );
        $sentence_count = count( $sentences );
        $avg_words_per_sentence = $sentence_count > 0 ? round( $word_count / $sentence_count ) : 0;

        preg_match_all( '/<img[^>]+>/i', $content, $img_matches );
        $img_count     = count( $img_matches[0] );
        $imgs_with_alt = 0;
        foreach ( $img_matches[0] as $img ) {
            if ( preg_match( '/alt=["\'][^"\']+["\']/i', $img ) ) {
                $imgs_with_alt++;
            }
        }

        $has_featured_image = has_post_thumbnail( $post->ID );

        $meta_desc = get_post_meta( $post->ID, '_yoast_wpseo_metadesc', true );
        if ( empty( $meta_desc ) ) { $meta_desc = get_post_meta( $post->ID, 'rank_math_description', true ); }
        if ( empty( $meta_desc ) ) { $meta_desc = get_post_meta( $post->ID, '_aioseo_description', true ); }
        if ( empty( $meta_desc ) ) { $meta_desc = get_post_meta( $post->ID, '_aije_metadesc', true ); } // eigene Meta-Box
        $has_meta_desc = ! empty( $meta_desc );

        $job_title   = get_user_meta( $post->post_author, self::USER_META_JOB_TITLE, true );
        $expertise   = get_user_meta( $post->post_author, self::USER_META_EXPERTISE, true );
        $expert_url  = get_user_meta( $post->post_author, self::USER_META_WEBSITE,   true );
        $same_as_raw = get_user_meta( $post->post_author, self::USER_META_SAME_AS,   true );

        $same_as_count = 0;
        if ( ! empty( $same_as_raw ) ) {
            foreach ( preg_split( "/\r\n|\n|\r/", $same_as_raw ) as $line ) {
                $line = trim( $line );
                if ( $line !== '' && substr( $line, 0, 1 ) !== '#' ) { $same_as_count++; }
            }
        }

        $is_recent  = strtotime( $post->post_modified ) > strtotime( '-12 months' );
        $title      = $post->post_title;
        $title_len  = mb_strlen( $title );
        $title_has_nr = (bool) preg_match( '/\d/', $title );
        $title_has_q  = ( strpos( $title, '?' ) !== false );

        // ── Kategorie 1: Content-Qualität (35 %) ─────────────────────────────
        $c_score = 0;

        if ( $word_count >= 1500 )     { $c_score += 40; }
        elseif ( $word_count >= 1000 ) { $c_score += 32; }
        elseif ( $word_count >= 700 )  { $c_score += 22; }
        elseif ( $word_count >= 400 )  { $c_score += 12; }
        elseif ( $word_count >= 200 )  { $c_score += 5; }
        else {
            $issues[] = array( 'msg' => 'Inhalt zu kurz (' . $word_count . ' Wörter).', 'action' => 'Mindestens 700 Wörter anstreben; 1.000+ für konkurrenzfähige Themen.', 'points' => 30, 'category' => 'content', 'severity' => 'high' );
        }
        if ( $word_count > 0 && $word_count < 700 ) {
            $issues[] = array( 'msg' => 'Artikel etwas kurz (' . $word_count . ' Wörter).', 'action' => 'Erweitere auf mindestens 700 Wörter für bessere Sichtbarkeit.', 'points' => 18, 'category' => 'content', 'severity' => 'medium' );
        }

        if ( $h2_count >= 4 )      { $c_score += 25; }
        elseif ( $h2_count >= 2 )  { $c_score += 18; }
        elseif ( $h2_count === 1 ) { $c_score += 10; }
        else {
            $issues[] = array( 'msg' => 'Keine H2-Zwischenüberschriften.', 'action' => 'Strukturiere den Text mit mindestens 3 H2-Überschriften.', 'points' => 20, 'category' => 'content', 'severity' => 'high' );
        }
        if ( $h3_count >= 2 ) { $c_score += 5; }

        if ( $avg_words_per_sentence >= 10 && $avg_words_per_sentence <= 20 ) {
            $c_score += 15;
        } elseif ( $avg_words_per_sentence > 20 && $avg_words_per_sentence <= 28 ) {
            $c_score += 8;
            $issues[] = array( 'msg' => 'Satzlänge leicht erhöht (' . $avg_words_per_sentence . ' Wörter/Satz).', 'action' => 'Lange Sätze aufteilen; Zielwert: 12–18 Wörter.', 'points' => 7, 'category' => 'content', 'severity' => 'low' );
        } elseif ( $avg_words_per_sentence > 28 ) {
            $issues[] = array( 'msg' => 'Sätze sehr lang (' . $avg_words_per_sentence . ' Wörter/Satz).', 'action' => 'Text in kürzere Sätze umstrukturieren.', 'points' => 15, 'category' => 'content', 'severity' => 'medium' );
        } elseif ( $avg_words_per_sentence > 0 ) {
            $c_score += 10;
        }

        if ( $has_list ) { $c_score += 7; }
        else { $issues[] = array( 'msg' => 'Keine Aufzählungslisten.', 'action' => 'Mindestens eine ul/ol-Liste einfügen.', 'points' => 5, 'category' => 'content', 'severity' => 'low' ); }
        if ( $has_faq ) { $c_score += 3; }

        if ( $para_count >= 6 )     { $c_score += 10; }
        elseif ( $para_count >= 3 ) { $c_score += 6; }
        else { $issues[] = array( 'msg' => 'Zu wenige Absätze (' . $para_count . ').', 'action' => 'Text in mindestens 5–6 Absätze gliedern.', 'points' => 8, 'category' => 'content', 'severity' => 'medium' ); }

        $c_score = min( 100, $c_score );

        // ── Kategorie 2: E-E-A-T / Autorität (30 %) ──────────────────────────
        $e_score = 0;

        if ( ! empty( $job_title ) ) { $e_score += 20; }
        else { $issues[] = array( 'msg' => 'Keine Berufsbezeichnung im Autorenprofil.', 'action' => 'Unter Benutzer → Profil → "Experten-Profil" Berufsbezeichnung hinterlegen.', 'points' => 20, 'category' => 'eeat', 'severity' => 'high' ); }

        if ( ! empty( $expertise ) && mb_strlen( $expertise ) >= 80 ) { $e_score += 20; }
        elseif ( ! empty( $expertise ) ) {
            $e_score += 10;
            $issues[] = array( 'msg' => 'Fachbiografie sehr kurz (' . mb_strlen( $expertise ) . ' Zeichen).', 'action' => 'Biografie auf mindestens 80 Zeichen ausbauen.', 'points' => 10, 'category' => 'eeat', 'severity' => 'medium' );
        } else { $issues[] = array( 'msg' => 'Keine Fachbiografie im Autorenprofil.', 'action' => 'Kurze Fachbiografie im Benutzerprofil eintragen.', 'points' => 20, 'category' => 'eeat', 'severity' => 'high' ); }

        if ( $same_as_count >= 3 )      { $e_score += 25; }
        elseif ( $same_as_count === 2 ) { $e_score += 18; }
        elseif ( $same_as_count === 1 ) { $e_score += 10; }
        else { $issues[] = array( 'msg' => 'Keine SameAs-Links (Social Media / Profilseiten).', 'action' => 'Instagram, LinkedIn o.ä. im Benutzerprofil hinterlegen.', 'points' => 25, 'category' => 'eeat', 'severity' => 'high' ); }

        if ( ! empty( $expert_url ) ) { $e_score += 15; }
        else { $issues[] = array( 'msg' => 'Keine Experten-/Praxiswebsite hinterlegt.', 'action' => 'URL der eigenen Website/Praxis im Benutzerprofil eintragen.', 'points' => 15, 'category' => 'eeat', 'severity' => 'medium' ); }

        if ( $external_links >= 3 )      { $e_score += 20; }
        elseif ( $external_links === 2 ) { $e_score += 15; }
        elseif ( $external_links === 1 ) { $e_score += 8; }
        else { $issues[] = array( 'msg' => 'Keine externen Quellen verlinkt.', 'action' => 'Verlinke 1–3 vertrauenswürdige Quellen (Studien, Behörden, Fachportale).', 'points' => 15, 'category' => 'eeat', 'severity' => 'medium' ); }

        $e_score = min( 100, $e_score );

        // ── Kategorie 3: Technische SEO (20 %) ───────────────────────────────
        $t_score = 0;

        if ( $has_featured_image ) { $t_score += 30; }
        else { $issues[] = array( 'msg' => 'Kein Beitragsbild gesetzt.', 'action' => 'Featured Image setzen – wichtig für Social Shares und Google Discover.', 'points' => 30, 'category' => 'technical', 'severity' => 'high' ); }

        if ( $img_count === 0 ) {
            $issues[] = array( 'msg' => 'Keine Bilder im Artikelinhalt.', 'action' => 'Mindestens 1–2 thematisch passende Bilder einfügen.', 'points' => 15, 'category' => 'technical', 'severity' => 'low' );
        } elseif ( $imgs_with_alt === $img_count ) {
            $t_score += 25;
        } elseif ( $imgs_with_alt > 0 ) {
            $t_score += 12;
            $issues[] = array( 'msg' => ( $img_count - $imgs_with_alt ) . ' Bild(er) ohne Alt-Text.', 'action' => 'Jedem Bild einen beschreibenden Alt-Text hinzufügen.', 'points' => 13, 'category' => 'technical', 'severity' => 'medium' );
        } else {
            $issues[] = array( 'msg' => 'Alle ' . $img_count . ' Bilder ohne Alt-Text.', 'action' => 'Alt-Texte für alle Bilder ergänzen – wichtig für Barrierefreiheit & SEO.', 'points' => 25, 'category' => 'technical', 'severity' => 'high' );
        }

        if ( $has_meta_desc ) {
            $meta_len = mb_strlen( $meta_desc );
            if ( $meta_len >= 120 && $meta_len <= 160 ) { $t_score += 25; }
            elseif ( $meta_len >= 70 ) {
                $t_score += 15;
                $issues[] = array( 'msg' => 'Meta-Description Länge nicht optimal (' . $meta_len . ' Zeichen).', 'action' => 'Zielbereich: 120–160 Zeichen.', 'points' => 10, 'category' => 'technical', 'severity' => 'low' );
            } else {
                $t_score += 8;
                $issues[] = array( 'msg' => 'Meta-Description zu kurz (' . $meta_len . ' Zeichen).', 'action' => 'Auf 120–160 Zeichen ausbauen.', 'points' => 17, 'category' => 'technical', 'severity' => 'medium' );
            }
        } else {
            $issues[] = array( 'msg' => 'Keine Meta-Description gefunden.', 'action' => 'Meta-Description im WP Rankify Meta-Generator oder in Yoast/RankMath/AIOSEO hinterlegen.', 'points' => 25, 'category' => 'technical', 'severity' => 'high' );
        }

        if ( $title_len >= 50 && $title_len <= 65 ) { $t_score += 20; }
        elseif ( $title_len >= 35 ) {
            $t_score += 12;
            if ( $title_len > 65 ) { $issues[] = array( 'msg' => 'Titel zu lang (' . $title_len . ' Zeichen).', 'action' => 'Auf max. 65 Zeichen kürzen.', 'points' => 8, 'category' => 'technical', 'severity' => 'low' ); }
        } else {
            $issues[] = array( 'msg' => 'Titel sehr kurz (' . $title_len . ' Zeichen).', 'action' => 'Titel auf 50–65 Zeichen ausbauen.', 'points' => 15, 'category' => 'technical', 'severity' => 'medium' );
        }
        if ( $title_has_nr || $title_has_q ) { $t_score += 5; }

        $t_score = min( 100, $t_score );

        // ── Kategorie 4: Interne Vernetzung (15 %) ───────────────────────────
        $l_score = 0;

        if ( $internal_links >= 4 )      { $l_score += 60; }
        elseif ( $internal_links === 3 ) { $l_score += 50; }
        elseif ( $internal_links === 2 ) { $l_score += 38; }
        elseif ( $internal_links === 1 ) { $l_score += 22; }
        else { $issues[] = array( 'msg' => 'Keine internen Links.', 'action' => 'Verlinke 2–4 thematisch verwandte eigene Artikel.', 'points' => 50, 'category' => 'linking', 'severity' => 'high' ); }

        if ( $is_recent ) { $l_score += 40; }
        else {
            $age_months = round( ( time() - strtotime( $post->post_modified ) ) / MONTH_IN_SECONDS );
            $issues[]   = array( 'msg' => 'Artikel seit ' . $age_months . ' Monaten nicht aktualisiert.', 'action' => 'Inhalte, Zahlen und Links prüfen und aktualisieren.', 'points' => 35, 'category' => 'linking', 'severity' => 'medium' );
        }
        $l_score = min( 100, $l_score );

        // ── Gewichteter Gesamt-Score (aus Einstellungen / Preset) ───────────────
        $weights = self::get_score_weights( $this->get_opts() );
        $total   = (int) round(
            ( $c_score * $weights['content']   / 100 ) +
            ( $e_score * $weights['eeat']      / 100 ) +
            ( $t_score * $weights['technical'] / 100 ) +
            ( $l_score * $weights['linking']   / 100 )
        );

        // Issues sortieren: high → medium → low, dann points desc
        $sev_order = array( 'high' => 0, 'medium' => 1, 'low' => 2 );
        usort( $issues, function( $a, $b ) use ( $sev_order ) {
            $s = $sev_order[ $a['severity'] ] <=> $sev_order[ $b['severity'] ];
            return $s !== 0 ? $s : ( $b['points'] <=> $a['points'] );
        });

        return array(
            'score'      => $total,
            'categories' => array(
                'content'   => array( 'score' => $c_score, 'label' => 'Content-Qualität',   'weight' => $weights['content'] ),
                'eeat'      => array( 'score' => $e_score, 'label' => 'E-E-A-T / Autorität', 'weight' => $weights['eeat'] ),
                'technical' => array( 'score' => $t_score, 'label' => 'Technische SEO',      'weight' => $weights['technical'] ),
                'linking'   => array( 'score' => $l_score, 'label' => 'Interne Vernetzung',  'weight' => $weights['linking'] ),
            ),
            'issues' => $issues,
        );
    }

    public function register_settings() {
        register_setting(self::OPT_KEY, self::OPT_KEY, array($this, 'sanitize_settings'));
        register_setting('aije_ai_settings', 'aije_openai_api_key');
    }

    /**
     * Output-Buffer starten um Header-Konflikte durch andere Plugins zu vermeiden.
     * Wird bei allen admin_post und options-save Aktionen ausgeführt.
     */
    public function start_output_buffer() {
        if ( ! ob_get_level() ) {
            ob_start();
        }
    }

    public function sanitize_settings($in) {
        $d = self::defaults();
        $o = array();

        $o['enabled_post_types'] = isset($in['enabled_post_types'])
            ? array_values(array_map('sanitize_key', (array) $in['enabled_post_types']))
            : $d['enabled_post_types'];

        $o['enable_schema'] = !empty($in['enable_schema']) ? 1 : 0;
        $o['minify']        = !empty($in['minify']) ? 1 : 0;
        $o['acf_include']   = !empty($in['acf_include']) ? 1 : 0;
        $o['cron_enabled']  = !empty($in['cron_enabled']) ? 1 : 0;
        $o['cron_frequency']= isset($in['cron_frequency']) ? sanitize_key($in['cron_frequency']) : 'daily';
        $o['ping_enabled']  = !empty($in['ping_enabled']) ? 1 : 0;
        $o['ping_urls']     = isset($in['ping_urls']) ? (string) $in['ping_urls'] : $d['ping_urls'];

        $events = array();
        if (!empty($in['ping_events']) && is_array($in['ping_events'])) {
            foreach ($in['ping_events'] as $e) {
                $e = sanitize_key($e);
                if (in_array($e, array('publish', 'update'), true)) {
                    $events[] = $e;
                }
            }
        }
        $o['ping_events']  = array_values(array_unique($events));
        $o['ping_secret']  = isset($in['ping_secret']) ? (string) $in['ping_secret'] : '';
        $o['ping_timeout'] = isset($in['ping_timeout']) ? max(2, (int) $in['ping_timeout']) : 5;
        $o['ping_retry']   = !empty($in['ping_retry']) ? 1 : 0;

        $o['openai_api_key'] = isset($in['openai_api_key'])
            ? sanitize_text_field($in['openai_api_key'])
            : '';

        $o['openai_prompt'] = isset($in['openai_prompt'])
            ? trim($in['openai_prompt'])
            : $d['openai_prompt'];

        // Score-Gewichtung
        $valid_presets = array( 'ymyl', 'standard', 'ecommerce', 'custom' );
        $o['score_preset'] = ( isset( $in['score_preset'] ) && in_array( $in['score_preset'], $valid_presets, true ) )
            ? $in['score_preset']
            : 'standard';
        $o['score_weight_content']   = isset( $in['score_weight_content'] )   ? max( 5, (int) $in['score_weight_content'] )   : 35;
        $o['score_weight_eeat']      = isset( $in['score_weight_eeat'] )      ? max( 5, (int) $in['score_weight_eeat'] )      : 30;
        $o['score_weight_technical'] = isset( $in['score_weight_technical'] ) ? max( 5, (int) $in['score_weight_technical'] ) : 20;
        $o['score_weight_linking']   = isset( $in['score_weight_linking'] )   ? max( 5, (int) $in['score_weight_linking'] )   : 15;
        $valid_seo   = array( 'auto', 'yoast', 'rankmath', 'aioseo', 'own' );
        $old_opts    = get_option( self::OPT_KEY, array() );
        $old_seo     = is_array($old_opts) && isset($old_opts['seo_plugin']) ? $old_opts['seo_plugin'] : 'auto';
        $o['seo_plugin'] = ( isset($in['seo_plugin']) && in_array($in['seo_plugin'], $valid_seo, true) )
            ? $in['seo_plugin'] : $old_seo;
        $o['remove_category_base'] = ! empty($in['remove_category_base']) ? 1 : 0;

        $this->maybe_reschedule_export($o['cron_enabled'], $o['cron_frequency']);
        $this->ensure_ping_cron();

        // Tracking
        $o['gtm_id']     = sanitize_text_field( $in['gtm_id']     ?? '' );
        $o['ga4_id']     = sanitize_text_field( $in['ga4_id']     ?? '' );
        $o['gsc_verify'] = sanitize_text_field( $in['gsc_verify'] ?? '' );
        $o['meta_pixel']        = sanitize_text_field( $in['meta_pixel']        ?? '' );
        $o['gsc_client_id']     = sanitize_text_field( $in['gsc_client_id']     ?? '' );
        $o['gsc_client_secret'] = sanitize_text_field( $in['gsc_client_secret'] ?? '' );

        return $o;
    }

    /* ===== Admin UI ===== */

    public function tools_menu() {
        add_management_page(
            esc_html__('WP Rankify', 'ai-json-extractor-auto-embed-lite'),
            esc_html__('WP Rankify', 'ai-json-extractor-auto-embed-lite'),
            'manage_options',
            'aije-lite',
            array($this, 'render_tools')
        );
    }

    public function render_tools() {
        if (!current_user_can('manage_options')) {
            return;
        }

        $licensed = self::license_is_valid();
        $tabs = array(
            'dashboard'  => esc_html__('Dashboard', 'ai-json-extractor-auto-embed-lite'),
            'settings'   => esc_html__('Einstellungen', 'ai-json-extractor-auto-embed-lite'),
            'tracking'   => esc_html__('Tracking & Analytics', 'ai-json-extractor-auto-embed-lite'),
            'export'     => esc_html__('Bulk Export', 'ai-json-extractor-auto-embed-lite'),
            'automation' => esc_html__('Automation', 'ai-json-extractor-auto-embed-lite'),
            'pinghub'    => esc_html__('PingHub', 'ai-json-extractor-auto-embed-lite'),


            'gsc'        => esc_html__('Google Suche', 'ai-json-extractor-auto-embed-lite'),
            'llms'       => esc_html__('llms.txt', 'ai-json-extractor-auto-embed-lite'),
            'license'    => esc_html__('Lizenz', 'ai-json-extractor-auto-embed-lite'),
        );

        $tab = isset($_GET['tab']) ? sanitize_key($_GET['tab']) : 'dashboard';

        echo '<div class="wrap" style="position:relative;">';
        echo '<h1>' . esc_html__('WP Rankify', 'ai-json-extractor-auto-embed-lite') . ' <span style="font-size:13px;font-weight:400;color:#888;">(AI Auto Embed)</span></h1>';

        echo '<h2 class="nav-tab-wrapper">';
        foreach ($tabs as $k => $label) {
            $class = ($tab === $k) ? ' nav-tab nav-tab-active' : ' nav-tab';
            $url   = add_query_arg(array('page' => 'aije-lite', 'tab' => $k), admin_url('tools.php'));
            echo '<a class="' . esc_attr($class) . '" href="' . esc_url($url) . '">' . esc_html($label) . '</a>';
        }
        echo '</h2>';

        // ── Bewertungs-Button ──────────────────────────────────────────────────
        echo '<p style="margin:8px 0 12px 0;">'
            . '<a href="https://wordpress.org/support/plugin/ai-json-extractor-auto-embed-lite/reviews/#new-post" target="_blank"'
            . ' style="display:inline-flex;align-items:center;gap:6px;background:#fff8f0;border:1px solid #f29400;'
            . 'border-radius:6px;padding:6px 14px;font-size:12px;font-weight:600;color:#f29400;text-decoration:none;">'
            . '&#11088; WP Rankify bewerten'
            . '</a></p>';

        if ($licensed) {
            echo '<div class="notice notice-success"><p>';
            echo '<strong>' . esc_html__('Lizenz aktiv.', 'ai-json-extractor-auto-embed-lite') . '</strong>';
            echo '</p></div>';
        }

        switch ($tab) {
            case 'dashboard':
                $this->tab_dashboard();
                break;
            case 'export':
                $this->tab_export();
                break;
            case 'automation':
                $this->tab_automation();
                break;
            case 'pinghub':
                $this->tab_pinghub();
                break;
            case 'logs':
            case 'gsc':
                $this->tab_gsc();
                break;
            case 'llms':
                $this->tab_llms();
                break;
            case 'license':
                $this->tab_license();
                break;
            case 'tracking':
                $this->tab_tracking();
                break;
            case 'settings':
            default:
                $this->tab_settings();
                break;
        }

        echo '</div>';
    }

    private function tab_tracking() {
        if ( isset($_GET['settings-updated']) ) {
            $saved = get_option(self::OPT_KEY, array());
            add_settings_error( 'aije_tracking', 'saved',
                'GTM: ' . ($saved['gtm_id'] ?? 'leer') .
                ' | GA4: ' . ($saved['ga4_id'] ?? 'leer') .
                ' | Pixel: ' . ($saved['meta_pixel'] ?? 'leer'),
                'success' );
        }
        settings_errors( 'aije_tracking' );
        $opts       = $this->get_opts();
        $gtm_id     = $opts['gtm_id']     ?? '';
        $ga4_id     = $opts['ga4_id']     ?? '';
        $gsc_verify = $opts['gsc_verify'] ?? '';
        ?>
        <div style="max-width:680px;margin-top:16px;">
        <form method="post" action="options.php">
          <?php settings_fields(self::OPT_KEY); ?>

          <div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:24px;margin-bottom:16px;">
            <h3 style="margin:0 0 4px 0;font-size:15px;font-weight:700;">&#127991; Google Tag Manager</h3>
            <p style="margin:0 0 14px 0;font-size:13px;color:#6b7280;">Empfohlen wenn du mehrere Tracking-Tools verwaltest. GTM übernimmt dann auch GA4.</p>
            <label style="display:block;font-size:13px;font-weight:600;margin-bottom:5px;">Tag Manager ID</label>
            <input type="text" name="aije_pro_opts[gtm_id]" value="<?= esc_attr($gtm_id) ?>" placeholder="GTM-XXXXXXX"
              style="width:100%;padding:9px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px;font-family:monospace;" />
            <p style="font-size:12px;color:#9ca3af;margin:6px 0 0 0;">Findest du unter tagmanager.google.com &rarr; dein Container &rarr; Container-ID</p>
          </div>

          <div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:24px;margin-bottom:16px;">
            <h3 style="margin:0 0 4px 0;font-size:15px;font-weight:700;">&#128202; Google Analytics 4</h3>
            <p style="margin:0 0 14px 0;font-size:13px;color:#6b7280;">Direkte GA4-Einbindung ohne Tag Manager. Falls du GTM nutzt, lass dieses Feld leer.</p>
            <label style="display:block;font-size:13px;font-weight:600;margin-bottom:5px;">Mess-ID</label>
            <input type="text" name="aije_pro_opts[ga4_id]" value="<?= esc_attr($ga4_id) ?>" placeholder="G-XXXXXXXXXX"
              style="width:100%;padding:9px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px;font-family:monospace;" />
            <p style="font-size:12px;color:#9ca3af;margin:6px 0 0 0;">Findest du unter analytics.google.com &rarr; Verwaltung &rarr; Datenströme &rarr; deine Website</p>
          </div>

          <div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:24px;margin-bottom:24px;">
            <h3 style="margin:0 0 4px 0;font-size:15px;font-weight:700;">&#128269; Google Search Console</h3>
            <p style="margin:0 0 14px 0;font-size:13px;color:#6b7280;">Verifiziere deine Website bei Google Search Console über einen Meta-Tag im &lt;head&gt;.</p>
            <label style="display:block;font-size:13px;font-weight:600;margin-bottom:5px;">Verifikations-Code</label>
            <input type="text" name="aije_pro_opts[gsc_verify]" value="<?= esc_attr($gsc_verify) ?>"
              placeholder="google-site-verification=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
              style="width:100%;padding:9px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px;font-family:monospace;" />
            <p style="font-size:12px;color:#9ca3af;margin:6px 0 0 0;">Findest du unter search.google.com/search-console &rarr; Eigenschaft hinzufügen &rarr; HTML-Tag &rarr; content="..."</p>
            <?php if ( $gsc_verify ) : ?>
            <p style="font-size:12px;color:#16a34a;margin:8px 0 0 0;">&#10003; Verifikations-Tag ist aktiv</p>
            <?php endif; ?>
          </div>

          <!-- Meta Pixel -->
          <div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:24px;margin-bottom:24px;">
            <h3 style="margin:0 0 4px 0;font-size:15px;font-weight:700;">&#128250; Meta Pixel (Facebook)</h3>
            <p style="margin:0 0 14px 0;font-size:13px;color:#6b7280;">Für Facebook- und Instagram-Werbung. Pixel-Code wird automatisch auf allen Seiten eingebunden.</p>
            <label style="display:block;font-size:13px;font-weight:600;margin-bottom:5px;">Pixel-ID</label>
            <input type="text" name="aije_pro_opts[meta_pixel]" value="<?= esc_attr($opts['meta_pixel'] ?? '') ?>"
              placeholder="123456789012345"
              style="width:100%;padding:9px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px;font-family:monospace;" />
            <p style="font-size:12px;color:#9ca3af;margin:6px 0 0 0;">Findest du unter business.facebook.com &rarr; Events Manager &rarr; Pixel &rarr; Pixel-ID</p>
          </div>

          <button type="submit" style="background:#f29400;color:#fff;border:none;padding:11px 28px;border-radius:7px;font-size:14px;font-weight:600;cursor:pointer;">
            Einstellungen speichern
          </button>
        </form>

        <?php if ( $gtm_id || $ga4_id ) : ?>
        <div style="margin-top:20px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:16px 20px;font-size:13px;">
          <strong style="color:#15803d;">&#10003; Aktives Tracking:</strong>
          <?php if ( $gtm_id ) : ?>
            <span style="margin-left:8px;background:#dcfce7;color:#15803d;padding:2px 10px;border-radius:4px;font-family:monospace;"><?= esc_html($gtm_id) ?></span>
          <?php endif; ?>
          <?php if ( $ga4_id ) : ?>
            <span style="margin-left:8px;background:#dcfce7;color:#15803d;padding:2px 10px;border-radius:4px;font-family:monospace;"><?= esc_html($ga4_id) ?></span>
          <?php endif; ?>
        </div>
        <?php endif; ?>
        </div>
        <?php
    }

    private function tab_settings() {

        $o     = $this->get_opts();
        $types = get_post_types(array('public' => true), 'objects');
        $acf   = function_exists('get_fields');

        echo '<form method="post" action="options.php">';
        settings_fields(self::OPT_KEY);

        echo '<table class="form-table">';

        // SEO-Plugin – nur Anzeige, kein Dropdown
        $detected_seo = 'Keines erkannt – WP Rankify übernimmt Meta-Description';
        if ( defined('WPSEO_VERSION') )     { $detected_seo = 'Yoast SEO ' . WPSEO_VERSION; }
        if ( defined('RANK_MATH_VERSION') ) { $detected_seo = 'RankMath ' . RANK_MATH_VERSION; }
        if ( defined('AIOSEO_VERSION') )    { $detected_seo = 'AIOSEO ' . AIOSEO_VERSION; }
        echo '<tr><th>SEO-Plugin</th><td>';
        echo '<strong>' . esc_html($detected_seo) . '</strong>';
        echo '<p class="description">WP Rankify erkennt automatisch welches SEO-Plugin installiert ist und arbeitet damit zusammen. Ist keines installiert, erscheint eine eigene SEO-Box im Editor.</p>';
        echo '</td></tr>';

        // Post Types
        echo '<tr><th>Aktive Post-Typen</th><td>';
        foreach ($types as $t) {
            echo '<label style="display:inline-block;margin-right:14px;">';
            echo '<input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[enabled_post_types][]" value="' . esc_attr($t->name) . '" ' . checked(in_array($t->name, $o['enabled_post_types'], true), true, false) . ' /> ';
            echo esc_html($t->labels->singular_name . ' (' . $t->name . ')');
            echo '</label>';
        }
        echo '</td></tr>';

        // Schema
        echo '<tr><th>Schema.org (Article)</th><td>';
        echo '<label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[enable_schema]" value="1" ' . checked($o['enable_schema'], true, false) . ' /> ';
        echo 'application/ld+json (Article) zusätzlich ausgeben</label>';
        echo '<p class="description">Das Experten-Profil (Person-Schema) wird immer automatisch ausgegeben, unabhängig von dieser Einstellung.</p>';
        echo '</td></tr>';

        // Category Base entfernen
        echo '<tr><th>Kategorie-Slug</th><td>';
        echo '<label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[remove_category_base]" value="1" ' . checked($o['remove_category_base'] ?? 0, 1, false) . ' /> ';
        echo 'Kategorie-Präfix aus URLs entfernen (<code>/category/</code> → <code>/</code>)</label>';
        echo '<p class="description">Entfernt den <code>/category/</code> Slug aus Kategorie-URLs. Nach dem Speichern werden die Permalinks automatisch neu generiert.</p>';
        echo '</td></tr>';

        // Minify
        echo '<tr><th>JSON</th><td>';
        echo '<label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[minify]" value="1" ' . checked($o['minify'], true, false) . ' /> ';
        echo 'JSON minifizieren</label>';
        echo '</td></tr>';

        // ACF
        echo '<tr><th>ACF</th><td>';
        echo '<label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[acf_include]" value="1" ' . checked($o['acf_include'], true, false) . ' /> ';
        echo 'ACF-Felder aufnehmen</label>';
        if (!$acf) {
            echo '<p class="description" style="color:#8a6d3b">ACF nicht aktiv.</p>';
        }
        echo '</td></tr>';

        // API Key + Prompt – KI-Feature: temporär ausgeblendet
        /*
        echo '<tr><th>OpenAI API Key</th><td>';
        echo '<input type="password" name="' . esc_attr(self::OPT_KEY) . '[openai_api_key]" value="' . esc_attr(isset($o['openai_api_key']) ? $o['openai_api_key'] : '') . '" class="regular-text" />';
        echo '<p class="description">Wird nur serverseitig verwendet.</p>';
        echo '</td></tr>';

        echo '<tr><th>KI Analyse Prompt</th><td>';
        echo '<textarea name="' . esc_attr(self::OPT_KEY) . '[openai_prompt]" rows="5" style="width:100%;font-family:monospace;">';
        echo esc_textarea($o['openai_prompt']);
        echo '</textarea>';
        echo '<p class="description">System-Prompt für die KI-Analyse.</p>';
        echo '</td></tr>';
        */

        echo '</table>';
        submit_button('Speichern');
        echo '</form>';

        // ── Score-Gewichtung / Preset ──────────────────────────────────────────

        $preset = isset( $o['score_preset'] ) ? $o['score_preset'] : 'standard';

        $presets_data = array(
            'ymyl' => array(
                'label'   => 'YMYL / Experten',
                'icon'    => '🏥',
                'desc'    => 'Medizin, Recht, Finanzen, Beratung. E-E-A-T steht im Vordergrund.',
                'tags'    => 'Hebamme · Arzt · Anwalt · Finanzberater',
                'content' => 30, 'eeat' => 40, 'technical' => 20, 'linking' => 10,
            ),
            'standard' => array(
                'label'   => 'Standard Blog',
                'icon'    => '📝',
                'desc'    => 'Typischer Content-Blog. Ausgewogene Gewichtung.',
                'tags'    => 'Blog · Magazin · News · Tutorial',
                'content' => 35, 'eeat' => 30, 'technical' => 20, 'linking' => 15,
            ),
            'ecommerce' => array(
                'label'   => 'E-Commerce / Lokal',
                'icon'    => '🛒',
                'desc'    => 'Shop und lokale Unternehmen. Technik besonders wichtig.',
                'tags'    => 'Shop · Restaurant · Dienstleister · Agentur',
                'content' => 30, 'eeat' => 20, 'technical' => 35, 'linking' => 15,
            ),
            'custom' => array(
                'label'   => 'Individuell',
                'icon'    => '⚙️',
                'desc'    => 'Gewichtung manuell einstellen.',
                'tags'    => '',
                'content' => $o['score_weight_content']   ?? 35,
                'eeat'    => $o['score_weight_eeat']      ?? 30,
                'technical' => $o['score_weight_technical'] ?? 20,
                'linking' => $o['score_weight_linking']   ?? 15,
            ),
        );

        echo '<hr>';
        echo '<h3>Score-Gewichtung</h3>';
        echo '<p class="description">Wähle das Preset, das zu deiner Website passt, und klicke danach auf <strong>Speichern</strong>.</p>';

        // Separates Formular nur für Score-Einstellungen
        echo '<form method="post" action="options.php" id="aije-score-form">';
        settings_fields( self::OPT_KEY );

        // Alle anderen Optionen als Hidden-Felder mitschicken
        foreach ( $o['enabled_post_types'] as $pt ) {
            echo '<input type="hidden" name="' . esc_attr( self::OPT_KEY ) . '[enabled_post_types][]" value="' . esc_attr( $pt ) . '" />';
        }
        $bool_fields = array( 'enable_schema', 'minify', 'acf_include', 'cron_enabled', 'ping_enabled', 'ping_retry' );
        foreach ( $bool_fields as $bf ) {
            echo '<input type="hidden" name="' . esc_attr( self::OPT_KEY ) . '[' . esc_attr( $bf ) . ']" value="' . esc_attr( $o[ $bf ] ) . '" />';
        }
        $str_fields = array( 'cron_frequency', 'ping_secret', 'ping_timeout', 'openai_api_key', 'openai_prompt', 'seo_plugin' );
        foreach ( $str_fields as $sf ) {
            echo '<input type="hidden" name="' . esc_attr( self::OPT_KEY ) . '[' . esc_attr( $sf ) . ']" value="' . esc_attr( $o[ $sf ] ?? '' ) . '" />';
        }
        // ping_urls separat wegen Zeilenumbrüchen
        echo '<input type="hidden" name="' . esc_attr( self::OPT_KEY ) . '[ping_urls]" value="' . esc_attr( $o['ping_urls'] ?? '' ) . '" />';

        // Radio-Inputs (versteckt – werden per JS gesteuert)
        foreach ( $presets_data as $key => $pd ) {
            echo '<input type="radio"
                id="aije-preset-radio-' . esc_attr( $key ) . '"
                name="' . esc_attr( self::OPT_KEY ) . '[score_preset]"
                value="' . esc_attr( $key ) . '"
                ' . checked( $preset, $key, false ) . '
                style="display:none;" />';
        }

        // Custom-Gewichte als Hidden (werden bei Custom per JS aktiviert)
        echo '<input type="hidden" id="aije-w-content"   name="' . esc_attr( self::OPT_KEY ) . '[score_weight_content]"   value="' . esc_attr( $o['score_weight_content']   ?? 35 ) . '" />';
        echo '<input type="hidden" id="aije-w-eeat"      name="' . esc_attr( self::OPT_KEY ) . '[score_weight_eeat]"      value="' . esc_attr( $o['score_weight_eeat']      ?? 30 ) . '" />';
        echo '<input type="hidden" id="aije-w-technical" name="' . esc_attr( self::OPT_KEY ) . '[score_weight_technical]" value="' . esc_attr( $o['score_weight_technical'] ?? 20 ) . '" />';
        echo '<input type="hidden" id="aije-w-linking"   name="' . esc_attr( self::OPT_KEY ) . '[score_weight_linking]"   value="' . esc_attr( $o['score_weight_linking']   ?? 15 ) . '" />';

        // Preset-Karten
        echo '<div style="display:flex;gap:12px;flex-wrap:wrap;margin:16px 0 24px;">';
        foreach ( $presets_data as $key => $pd ) {
            $active = ( $preset === $key );
            $border = $active ? '2px solid #0073aa' : '2px solid #ddd';
            $bg     = $active ? '#f0f8ff' : '#fff';
            $check  = $active ? '<span style="float:right;color:#0073aa;font-size:16px;">✔</span>' : '';

            echo '<div id="aije-card-' . esc_attr( $key ) . '"
                style="flex:1;min-width:170px;max-width:230px;border:' . esc_attr( $border ) . ';border-radius:8px;padding:14px;background:' . esc_attr( $bg ) . ';cursor:pointer;box-sizing:border-box;">';
            echo $check;
            echo '<div style="font-size:22px;margin-bottom:4px;">' . esc_html( $pd['icon'] ) . '</div>';
            echo '<div style="font-weight:700;font-size:13px;margin-bottom:4px;">' . esc_html( $pd['label'] ) . '</div>';
            echo '<div style="font-size:11px;color:#555;margin-bottom:8px;line-height:1.4;">' . esc_html( $pd['desc'] ) . '</div>';

            if ( $key !== 'custom' ) {
                echo '<div style="font-size:10px;color:#888;line-height:1.8;">';
                echo 'Content <strong>' . esc_html( $pd['content'] ) . '%</strong><br>';
                echo 'E-E-A-T <strong>' . esc_html( $pd['eeat'] ) . '%</strong><br>';
                echo 'Technik <strong>' . esc_html( $pd['technical'] ) . '%</strong><br>';
                echo 'Vernetzung <strong>' . esc_html( $pd['linking'] ) . '%</strong>';
                echo '</div>';
            }
            if ( ! empty( $pd['tags'] ) ) {
                echo '<div style="margin-top:6px;font-size:9px;color:#999;">' . esc_html( $pd['tags'] ) . '</div>';
            }
            echo '</div>'; // .aije-card
        }
        echo '</div>';

        // Custom-Sliders
        echo '<div id="aije-custom-box" style="display:' . ( $preset === 'custom' ? 'block' : 'none' ) . ';background:#f8f8f8;border:1px solid #ddd;border-radius:6px;padding:16px;margin-bottom:16px;">';
        echo '<p style="margin-top:0;font-size:12px;color:#555;">Werte werden auf <strong>100%</strong> normalisiert. Minimum je Kategorie: 5%.</p>';

        $slider_fields = array(
            'content'   => array( 'label' => '✍ Content-Qualität',    'id' => 'aije-w-content',   'val' => $o['score_weight_content']   ?? 35 ),
            'eeat'      => array( 'label' => '🏅 E-E-A-T / Autorität', 'id' => 'aije-w-eeat',      'val' => $o['score_weight_eeat']      ?? 30 ),
            'technical' => array( 'label' => '⚙ Technische SEO',       'id' => 'aije-w-technical', 'val' => $o['score_weight_technical'] ?? 20 ),
            'linking'   => array( 'label' => '🔗 Interne Vernetzung',   'id' => 'aije-w-linking',   'val' => $o['score_weight_linking']   ?? 15 ),
        );
        foreach ( $slider_fields as $sf ) {
            echo '<div style="margin-bottom:12px;">';
            echo '<div style="display:flex;justify-content:space-between;font-size:12px;margin-bottom:4px;">';
            echo '<span>' . esc_html( $sf['label'] ) . '</span>';
            echo '<strong id="' . esc_attr( $sf['id'] ) . '-display">' . esc_html( $sf['val'] ) . '%</strong>';
            echo '</div>';
            echo '<input type="range" min="5" max="70" value="' . esc_attr( $sf['val'] ) . '" style="width:100%;"
                data-hidden="' . esc_attr( $sf['id'] ) . '"
                data-display="' . esc_attr( $sf['id'] ) . '-display" />';
            echo '</div>';
        }
        echo '</div>';

        // Speichern-Button
        echo '<p>';
        submit_button( 'Einstellungen speichern', 'primary', 'submit', false );
        echo '</p>';
        echo '</form>';

        // JS – inline nach den Elementen, kein DOMContentLoaded nötig
        $cards_json = wp_json_encode( array_keys( $presets_data ) );
        echo '<script>
(function(){
    var keys = ' . $cards_json . ';

    function selectPreset(key) {
        // Radio setzen
        var radio = document.getElementById("aije-preset-radio-" + key);
        if (radio) radio.checked = true;

        // Alle Karten zurücksetzen
        keys.forEach(function(k) {
            var card = document.getElementById("aije-card-" + k);
            if (!card) return;
            card.style.border = "2px solid #ddd";
            card.style.background = "#fff";
            // Häkchen entfernen
            var chk = card.querySelector(".aije-check");
            if (chk) chk.remove();
        });

        // Aktive Karte markieren
        var active = document.getElementById("aije-card-" + key);
        if (active) {
            active.style.border = "2px solid #0073aa";
            active.style.background = "#f0f8ff";
            var chk = document.createElement("span");
            chk.className = "aije-check";
            chk.style.cssText = "float:right;color:#0073aa;font-size:16px;";
            chk.textContent = "✔";
            active.insertBefore(chk, active.firstChild);
        }

        // Custom-Box ein/ausblenden
        var box = document.getElementById("aije-custom-box");
        if (box) box.style.display = (key === "custom") ? "block" : "none";
    }

    // Klick-Handler auf jede Karte
    keys.forEach(function(k) {
        var card = document.getElementById("aije-card-" + k);
        if (card) {
            card.addEventListener("click", function() { selectPreset(k); });
        }
    });

    // Slider → Hidden-Input + Anzeige
    document.querySelectorAll("input[type=range][data-hidden]").forEach(function(slider) {
        slider.addEventListener("input", function() {
            var hidden = document.getElementById(this.dataset.hidden);
            var display = document.getElementById(this.dataset.display);
            if (hidden)  hidden.value = this.value;
            if (display) display.textContent = this.value + "%";
        });
    });
})();
</script>';

        // ---- Hinweis auf Experten-Profil ----
        echo '<hr>';
        echo '<h3>Experten-Profile pflegen</h3>';
        echo '<p>Die Berufsbezeichnung, Fachbiografie und SameAs-Links werden direkt im <a href="' . esc_url(admin_url('users.php')) . '">WordPress-Benutzerprofil</a> hinterlegt (Bereich: <em>Experten-Profil</em>). Das Plugin liest diese Daten automatisch aus und gibt sie als <code>application/ld+json</code> im <code>&lt;head&gt;</code> aus.</p>';
    }

    private function tab_export() {
        $nonce   = wp_create_nonce('aije_export');
        $types   = get_post_types(array('public' => true), 'objects');
        $authors = get_users(array(
            'who'     => 'authors',
            'orderby' => 'display_name',
            'order'   => 'ASC',
            'fields'  => array('ID', 'display_name'),
        ));
        $cats = get_terms(array(
            'taxonomy'   => 'category',
            'hide_empty' => false,
            'orderby'    => 'name',
            'order'      => 'ASC',
        ));

        echo '<h2>' . esc_html__('Bulk Export', 'ai-json-extractor-auto-embed-lite') . '</h2>';
        echo '<form method="post" action="' . esc_url(admin_url('admin-post.php')) . '">';
        echo '<input type="hidden" name="action" value="aije_export" />';
        echo '<input type="hidden" name="_wpnonce" value="' . esc_attr($nonce) . '" />';
        echo '<table class="form-table"><tbody>';

        echo '<tr><th>' . esc_html__('Post-Typen', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        foreach ($types as $t) {
            echo '<label style="display:inline-block;margin-right:12px;">';
            echo '<input type="checkbox" name="post_types[]" value="' . esc_attr($t->name) . '" checked /> ';
            echo esc_html($t->labels->singular_name . ' (' . $t->name . ')');
            echo '</label>';
        }
        echo '</td></tr>';

        echo '<tr><th>' . esc_html__('Autor', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        echo '<select name="author"><option value="0">' . esc_html__('— Alle Autoren —', 'ai-json-extractor-auto-embed-lite') . '</option>';
        foreach ($authors as $u) {
            echo '<option value="' . esc_attr($u->ID) . '">' . esc_html($u->display_name . ' (ID ' . $u->ID . ')') . '</option>';
        }
        echo '</select></td></tr>';

        echo '<tr><th>' . esc_html__('Kategorie', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        echo '<select name="cat"><option value="0">' . esc_html__('— Alle Kategorien —', 'ai-json-extractor-auto-embed-lite') . '</option>';
        if (!is_wp_error($cats)) {
            foreach ($cats as $c) {
                echo '<option value="' . esc_attr($c->term_id) . '">' . esc_html($c->name . ' (ID ' . $c->term_id . ')') . '</option>';
            }
        }
        echo '</select><p class="description">' . esc_html__('Hinweis: Kategorie-Filter wirkt nur auf den Post-Typ post.', 'ai-json-extractor-auto-embed-lite') . '</p></td></tr>';

        echo '<tr><th>' . esc_html__('Zeitraum', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        echo esc_html__('Von', 'ai-json-extractor-auto-embed-lite') . ' <input type="date" name="date_from" /> ';
        echo esc_html__('bis', 'ai-json-extractor-auto-embed-lite') . ' <input type="date" name="date_to" />';
        echo '</td></tr>';

        echo '<tr><th>' . esc_html__('Suche', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        echo '<input type="text" name="s" class="regular-text" placeholder="' . esc_attr__('Suchbegriff (optional)', 'ai-json-extractor-auto-embed-lite') . '" />';
        echo '</td></tr>';

        echo '<tr><th>' . esc_html__('Optionen', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        echo '<label><input type="checkbox" name="include_acf" value="1" checked /> ' . esc_html__('ACF-Felder', 'ai-json-extractor-auto-embed-lite') . '</label><br />';
        echo '<label><input type="checkbox" name="minify" value="1" /> ' . esc_html__('JSON minifizieren', 'ai-json-extractor-auto-embed-lite') . '</label><br />';
        echo '<label><input type="checkbox" name="zip" value="1" checked /> ' . esc_html__('ZIP (1 JSON pro Beitrag)', 'ai-json-extractor-auto-embed-lite') . '</label>';
        echo '</td></tr>';

        echo '</tbody></table>';
        echo '<p><button class="button button-primary">' . esc_html__('Jetzt exportieren', 'ai-json-extractor-auto-embed-lite') . '</button></p>';
        echo '</form>';

        if (isset($_GET['export_done'])) {
            $uploads = wp_upload_dir();
            $file    = isset($_GET['file']) ? sanitize_file_name(wp_unslash($_GET['file'])) : '';
            $url     = $file ? trailingslashit($uploads['baseurl']) . self::EXPORT_DIR . '/' . $file : '';
            echo '<div class="notice notice-success"><p>';
            echo esc_html__('Export abgeschlossen.', 'ai-json-extractor-auto-embed-lite') . ' ';
            echo esc_html__('Beiträge:', 'ai-json-extractor-auto-embed-lite') . ' ' . (int) $_GET['count'] . '. ';
            echo esc_html__('Größe:', 'ai-json-extractor-auto-embed-lite') . ' ' . esc_html(isset($_GET['size_kb']) ? wp_kses_post(wp_unslash($_GET['size_kb'])) : '–') . ' KB. ';
            if ($url) {
                echo esc_html__('Datei:', 'ai-json-extractor-auto-embed-lite') . ' <a href="' . esc_url($url) . '" target="_blank">' . esc_html($file) . '</a>';
            }
            echo '</p></div>';
        }
    }

    private function render_dashboard_list( $type, $filter = '' ) {
        $types = $this->get_opts()['enabled_post_types'];
        $excluded_ids = get_option( 'aije_excluded_posts', array() );
        $posts = get_posts( array(
            'post_type'      => $types,
            'posts_per_page' => -1,
            'post_status'    => 'publish',
            'post__not_in'   => $excluded_ids ?: array(0),
        ) );

        $colors = array( 'bad' => '#e74c3c', 'medium' => '#e67e22', 'good' => '#27ae60', 'filter' => '#0073aa' );

        // Filter-Mapping: filter-key → Issue-msg enthält diesen String
        $filter_map = array(
            'no_image'    => 'Beitragsbild',
            'no_meta'     => 'Meta-Description',
            'too_short'   => 'kurz',
            'no_eeat'     => 'Berufsbezeichnung',
            'no_h2'       => 'H2',
            'no_internal' => 'Keine internen Links',
        );

        echo '<ul style="margin-top:10px;">';
        $found = false;

        foreach ( $posts as $post ) {
            $analysis = $this->calculate_ai_analysis( $post );
            $score    = $analysis['score'];

            // Score-Tabs
            $show = false;
            if ( $type === 'bad'    && $score < 50 )                 { $show = true; }
            if ( $type === 'medium' && $score >= 50 && $score < 75 ) { $show = true; }
            if ( $type === 'good'   && $score >= 75 )                { $show = true; }
            if ( $type === 'filter' )                                 { $show = true; }
            if ( ! $show ) { continue; }

            // Filter anwenden
            if ( ! empty( $filter ) && isset( $filter_map[ $filter ] ) ) {
                $needle  = $filter_map[ $filter ];
                $matched = false;
                foreach ( $analysis['issues'] as $iss ) {
                    if ( mb_stripos( $iss['msg'], $needle ) !== false ) {
                        $matched = true;
                        break;
                    }
                }
                if ( ! $matched ) { continue; }
            }

            $found = true;

            // Top-3 Issues direkt in der Liste
            $top_issues = array_slice( $analysis['issues'], 0, 3 );
            $sev_bg     = array( 'high' => '#fdecea', 'medium' => '#fef9e7', 'low' => '#eafaf1' );
            $cat_icons  = array( 'content' => '✍', 'eeat' => '🏅', 'technical' => '⚙', 'linking' => '🔗' );

            echo '<li id="aije-post-' . esc_attr($post->ID) . '" style="padding:10px 0;border-bottom:1px solid #f0f0f0;">';
            echo '<div style="display:flex;justify-content:space-between;align-items:flex-start;gap:8px;">';
            echo '<div style="flex:1;min-width:0;">';
            echo '<a href="' . esc_url( get_edit_post_link( $post->ID ) ) . '" target="_blank" style="font-weight:600;font-size:13px;">' . esc_html( $post->post_title ) . '</a>';
            if ( ! empty( $top_issues ) && empty( $filter ) ) {
                echo '<div style="margin-top:5px;display:flex;flex-direction:column;gap:3px;">';
                foreach ( $top_issues as $issue ) {
                    $ic = $cat_icons[ $issue['category'] ] ?? '•';
                    $bg = $sev_bg[ $issue['severity'] ] ?? '#f5f5f5';
                    echo '<div style="display:inline-flex;align-items:center;gap:4px;font-size:11px;padding:2px 7px;background:' . esc_attr($bg) . ';border-radius:4px;width:fit-content;">';
                    echo '<span>' . $ic . '</span><span style="color:#333;">' . esc_html( $issue['msg'] ) . '</span>';
                    echo '</div>';
                }
                echo '</div>';
            }
            echo '</div>';
            echo '<span style="font-size:20px;font-weight:700;color:' . esc_attr( $colors[ $type ] ) . ';white-space:nowrap;flex-shrink:0;">' . esc_html( $score ) . '</span>';
            echo '<button type="button" onclick="aije_exclude_post(' . (int)$post->ID . ', this)" title="Ausschließen"'
                . ' style="flex-shrink:0;background:none;border:none;cursor:pointer;color:#ccc;font-size:16px;padding:0 2px;">&#128465;</button>';
            echo '</div></li>';
        }

        if ( ! $found ) {
            echo '<li style="color:#888;padding:8px 0;">Keine Artikel in dieser Kategorie.</li>';
        }
        echo '</ul>';
    }

    public function aije_exclude_post_handler() {
        check_ajax_referer( 'aije_dashboard_nonce', 'nonce' );
        if ( ! current_user_can('manage_options') ) { wp_send_json_error(); }
        $post_id  = intval( $_POST['post_id'] ?? 0 );
        if ( ! $post_id ) { wp_send_json_error(); }
        $excluded = get_option( 'aije_excluded_posts', array() );
        $excluded[] = $post_id;
        $excluded = array_unique( $excluded );
        update_option( 'aije_excluded_posts', $excluded );
        wp_send_json_success();
    }

    public function aije_include_post_handler() {
        check_ajax_referer( 'aije_dashboard_nonce', 'nonce' );
        if ( ! current_user_can('manage_options') ) { wp_send_json_error(); }
        $post_id  = intval( $_POST['post_id'] ?? 0 );
        $excluded = get_option( 'aije_excluded_posts', array() );
        $excluded = array_values( array_filter( $excluded, fn($id) => $id !== $post_id ) );
        update_option( 'aije_excluded_posts', $excluded );
        wp_send_json_success();
    }

    private function tab_dashboard() {
        wp_enqueue_script( 'chartjs', 'https://cdn.jsdelivr.net/npm/chart.js', array(), null, true );

        $types = $this->get_opts()['enabled_post_types'];
        $excluded_ids = get_option( 'aije_excluded_posts', array() );
        $nonce_dash   = wp_create_nonce( 'aije_dashboard_nonce' );
        $query = new WP_Query( array(
            'post_type'      => $types,
            'posts_per_page' => -1,
            'post_status'    => 'publish',
            'post__not_in'   => $excluded_ids,
        ) );

        $scores       = array();
        $distribution = array( 'ready' => 0, 'mid' => 0, 'low' => 0 );
        $cat_totals   = array( 'content' => 0, 'eeat' => 0, 'technical' => 0, 'linking' => 0 );
        $post_count   = 0;

        if ( $query->have_posts() ) {
            while ( $query->have_posts() ) {
                $query->the_post();
                $p        = get_post();
                $analysis = $this->calculate_ai_analysis( $p );
                $score    = $analysis['score'];
                $scores[] = array( 'id' => get_the_ID(), 'title' => get_the_title(), 'score' => $score );
                if ( $score >= 75 )     { $distribution['ready']++; }
                elseif ( $score >= 50 ) { $distribution['mid']++; }
                else                    { $distribution['low']++; }
                foreach ( $cat_totals as $k => $_ ) {
                    $cat_totals[ $k ] += $analysis['categories'][ $k ]['score'] ?? 0;
                }
                $post_count++;
            }
            wp_reset_postdata();
        }

        $avg      = $post_count ? round( array_sum( array_column( $scores, 'score' ) ) / $post_count ) : 0;
        $cat_avgs = array();
        foreach ( $cat_totals as $k => $total ) {
            $cat_avgs[ $k ] = $post_count ? round( $total / $post_count ) : 0;
        }

        usort( $scores, function( $a, $b ) { return $a['score'] <=> $b['score']; } );
        $avg_color = $avg >= 75 ? '#27ae60' : ( $avg >= 50 ? '#e67e22' : '#e74c3c' );

        echo '<h2 style="display:flex;align-items:center;gap:12px;">AI Readiness Dashboard '
            . '<span style="font-size:14px;font-weight:400;background:' . esc_attr( $avg_color ) . ';color:#fff;padding:3px 10px;border-radius:20px;">'
            . esc_html( $post_count ) . ' Artikel · Ø ' . esc_html( $avg ) . ' Punkte</span></h2>';

        echo '<div style="display:flex;gap:24px;flex-wrap:wrap;margin:20px 0;">';
        echo '<div style="flex:0 0 200px;"><div style="font-size:11px;font-weight:600;color:#555;text-transform:uppercase;margin-bottom:8px;">Score-Verteilung</div>';
        echo '<canvas id="aijeChart" style="max-width:200px;"></canvas></div>';
        echo '<div style="flex:0 0 220px;"><div style="font-size:11px;font-weight:600;color:#555;text-transform:uppercase;margin-bottom:8px;">Kategorien-Ø</div>';
        echo '<canvas id="aijeRadar" style="max-width:220px;"></canvas></div>';
        echo '</div>';

        echo '<script>
document.addEventListener("DOMContentLoaded", function(){
    new Chart(document.getElementById("aijeChart"), {
        type: "doughnut",
        data: {
            labels: ["KI-Ready (\u226575)", "Optimierbar (50–74)", "Kritisch (<50)"],
            datasets: [{ data: [' . (int)$distribution['ready'] . ',' . (int)$distribution['mid'] . ',' . (int)$distribution['low'] . '], backgroundColor: ["#27ae60","#e67e22","#e74c3c"], borderWidth: 0 }]
        },
        options: { responsive: true, maintainAspectRatio: true, plugins: { legend: { position: "bottom", labels: { font: { size: 11 } } } } }
    });
    new Chart(document.getElementById("aijeRadar"), {
        type: "radar",
        data: {
            labels: ["Content", "E-E-A-T", "Technik", "Vernetzung"],
            datasets: [{ label: "\u00d8 Score", data: [' . (int)$cat_avgs['content'] . ',' . (int)$cat_avgs['eeat'] . ',' . (int)$cat_avgs['technical'] . ',' . (int)$cat_avgs['linking'] . '], backgroundColor: "rgba(52,152,219,.15)", borderColor: "#3498db", pointBackgroundColor: "#3498db", borderWidth: 2 }]
        },
        options: { responsive: true, maintainAspectRatio: true, scales: { r: { min: 0, max: 100, ticks: { stepSize: 25, font: { size: 10 } } } }, plugins: { legend: { display: false } } }
    });
    const tabs = document.querySelectorAll(".aije-tab");
    const contents = document.querySelectorAll(".aije-tab-content");
    tabs.forEach(function(tab) {
        tab.addEventListener("click", function(){
            tabs.forEach(function(t){ t.classList.remove("active"); });
            contents.forEach(function(c){ c.classList.remove("active"); });
            this.classList.add("active");
            var el = document.getElementById("aije-tab-" + this.dataset.tab);
            if (el) el.classList.add("active");
        });
    });
});
</script>';

        // Filter-Counts berechnen
        $filter_counts = array(
            'no_image'    => 0, 'no_meta'     => 0,
            'too_short'   => 0, 'no_eeat'     => 0,
            'no_h2'       => 0, 'no_internal' => 0,
        );
        $filter_needles = array(
            'no_image'    => 'Beitragsbild',
            'no_meta'     => 'Meta-Description',
            'too_short'   => 'kurz',
            'no_eeat'     => 'Berufsbezeichnung',
            'no_h2'       => 'H2',
            'no_internal' => 'Keine internen Links',
        );
        $filter_labels = array(
            'no_image'    => '🖼 Kein Bild',
            'no_meta'     => '📝 Keine Meta',
            'too_short'   => '📏 Text zu kurz',
            'no_eeat'     => '🏅 Kein E-E-A-T',
            'no_h2'       => '📋 Kein H2',
            'no_internal' => '🔗 Kein int. Linking',
        );
        $all_posts_for_filter = get_posts( array(
            'post_type'      => $this->get_opts()['enabled_post_types'],
            'posts_per_page' => -1, 'post_status' => 'publish',
        ) );
        foreach ( $all_posts_for_filter as $fp ) {
            $fa = $this->calculate_ai_analysis( $fp );
            foreach ( $filter_counts as $fk => $_ ) {
                foreach ( $fa['issues'] as $iss ) {
                    if ( mb_stripos( $iss['msg'], $filter_needles[$fk] ) !== false ) {
                        $filter_counts[$fk]++;
                        break;
                    }
                }
            }
        }

        echo '<h2 style="display:flex;align-items:center;justify-content:space-between;">Artikel-Qualität';
        if ( ! empty($excluded_ids) ) {
            echo '<a href="' . esc_url( admin_url('tools.php?page=aije-lite&tab=dashboard&reset_excluded=1') ) . '"'
                . ' style="font-size:12px;font-weight:400;color:#888;text-decoration:none;border:1px solid #ddd;padding:4px 10px;border-radius:5px;">'
                . '↩ ' . count($excluded_ids) . ' ausgeschlossene Artikel zurücksetzen</a>';
        }
        echo '</h2>';
        // Reset-Handler
        if ( isset($_GET['reset_excluded']) ) {
            delete_option('aije_excluded_posts');
            wp_safe_redirect( admin_url('tools.php?page=aije-lite&tab=dashboard') );
            exit;
        }
        echo '<script>var aije_dash_nonce="' . esc_js($nonce_dash) . '";</script>';

        // Score-Tabs
        echo '<div class="aije-tabs" style="margin-bottom:0;border-bottom:none;">';
        echo '<button class="aije-tab active" data-tab="bad">Kritisch (' . (int)$distribution['low'] . ')</button>';
        echo '<button class="aije-tab" data-tab="medium">Optimierbar (' . (int)$distribution['mid'] . ')</button>';
        echo '<button class="aije-tab" data-tab="good">KI-Ready (' . (int)$distribution['ready'] . ')</button>';
        echo '</div>';

        // Filter-Buttons
        $excluded_count = count( get_option('aije_excluded_posts', array()) );
        echo '<div class="aije-tabs" style="margin-top:6px;padding-top:6px;border-top:1px solid #eee;">';
        foreach ( $filter_labels as $fk => $fl ) {
            if ( $filter_counts[$fk] > 0 ) {
                echo '<button class="aije-tab aije-filter-tab" data-tab="filter_' . esc_attr($fk) . '">';
                echo esc_html($fl) . ' <span style="background:#e74c3c;color:#fff;font-size:10px;padding:1px 5px;border-radius:10px;margin-left:3px;">' . (int)$filter_counts[$fk] . '</span>';
                echo '</button>';
            }
        }
        if ( $excluded_count > 0 ) {
            echo '<button class="aije-tab aije-filter-tab" data-tab="excluded">';
            echo '🚫 Ausgeschlossen <span style="background:#6b7280;color:#fff;font-size:10px;padding:1px 5px;border-radius:10px;margin-left:3px;">' . $excluded_count . '</span>';
            echo '</button>';
        }
        echo '</div>';

        // Score-Tab Inhalte
        echo '<div id="aije-tab-bad" class="aije-tab-content active">';
        $this->render_dashboard_list( 'bad' );
        echo '</div>';
        echo '<div id="aije-tab-medium" class="aije-tab-content">';
        $this->render_dashboard_list( 'medium' );
        echo '</div>';
        echo '<div id="aije-tab-good" class="aije-tab-content">';
        $this->render_dashboard_list( 'good' );
        echo '</div>';

        // Filter-Tab Inhalte
        foreach ( $filter_labels as $fk => $fl ) {
            echo '<div id="aije-tab-filter_' . esc_attr($fk) . '" class="aije-tab-content">';
            echo '<p style="font-size:12px;color:#888;margin:8px 0 4px;">' . esc_html($fl) . ' – ' . (int)$filter_counts[$fk] . ' Artikel betroffen</p>';
            $this->render_dashboard_list( 'filter', $fk );
            echo '</div>';
        }
        // Tab: Ausgeschlossene Artikel
        $excluded_ids = get_option( 'aije_excluded_posts', array() );
        echo '<div id="aije-tab-excluded" class="aije-tab-content">';
        if ( empty($excluded_ids) ) {
            echo '<p style="color:#888;padding:10px 0;">Keine ausgeschlossenen Artikel.</p>';
        } else {
            echo '<ul style="margin-top:10px;">';
            foreach ( $excluded_ids as $ex_id ) {
                $ex_post = get_post( $ex_id );
                if ( ! $ex_post ) { continue; }
                echo '<li id="aije-post-' . esc_attr($ex_id) . '" style="padding:10px 0;border-bottom:1px solid #f0f0f0;display:flex;justify-content:space-between;align-items:center;gap:8px;">';
                echo '<a href="' . esc_url( get_edit_post_link($ex_id) ) . '" target="_blank" style="font-weight:600;font-size:13px;">' . esc_html( $ex_post->post_title ) . '</a>';
                echo '<button type="button" onclick="aije_include_post(' . (int)$ex_id . ', this)" title="Wieder einschließen"'
                    . ' style="background:#f0fdf4;border:1px solid #bbf7d0;border-radius:5px;cursor:pointer;color:#15803d;font-size:12px;padding:4px 10px;white-space:nowrap;">↩ Einschließen</button>';
                echo '</li>';
            }
            echo '</ul>';
        }
        echo '</div>';

        $this->render_exclude_js();
    }

    private function calculate_ai_score( $post ) {
        $analysis = $this->calculate_ai_analysis( $post );
        return isset( $analysis['score'] ) ? (int) $analysis['score'] : 0;
    }

    private function render_exclude_js() {
        ?>
<script>
function aije_include_post(postId, btn) {
    var fd = new FormData();
    fd.append('action', 'aije_include_post');
    fd.append('nonce', aije_dash_nonce);
    fd.append('post_id', postId);
    fetch(ajaxurl, {method:'POST', body:fd, credentials:'same-origin'})
    .then(function(r){ return r.json(); })
    .then(function(d){
        if (d.success) {
            var li = document.getElementById('aije-post-' + postId);
            if (li) { li.style.opacity='0'; li.style.transition='opacity .3s'; setTimeout(function(){ li.remove(); },300); }
        }
    });
}
function aije_exclude_post(postId, btn) {
    if (!confirm('Diesen Artikel aus der Analyse ausschließen?')) return;
    var fd = new FormData();
    fd.append('action', 'aije_exclude_post');
    fd.append('nonce', aije_dash_nonce);
    fd.append('post_id', postId);
    fetch(ajaxurl, {method:'POST', body:fd, credentials:'same-origin'})
    .then(function(r){ return r.json(); })
    .then(function(d){
        if (d.success) {
            var li = document.getElementById('aije-post-' + postId);
            if (li) {
                li.style.opacity = '0';
                li.style.transition = 'opacity .3s';
                setTimeout(function(){ li.remove(); }, 300);
            }
        }
    });
}
</script>
        <?php
    }

    private function tab_automation() {
        $o     = $this->get_opts();
        $t     = wp_next_scheduled(self::CRON_EXPORT);
        $nonce = wp_create_nonce('aije_export');

        echo '<h2>' . esc_html__('Automation', 'ai-json-extractor-auto-embed-lite') . '</h2>';
        echo '<form method="post" action="options.php">';
        settings_fields(self::OPT_KEY);
        echo '<table class="form-table"><tbody>';
        echo '<tr><th>' . esc_html__('Auto-Export', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        echo '<label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[cron_enabled]" value="1" ' . checked($o['cron_enabled'], true, false) . ' /> ' . esc_html__('aktivieren', 'ai-json-extractor-auto-embed-lite') . '</label>';
        echo '</td></tr>';
        echo '<tr><th>' . esc_html__('Frequenz', 'ai-json-extractor-auto-embed-lite') . '</th><td>';
        echo '<select name="' . esc_attr(self::OPT_KEY) . '[cron_frequency]">';
        echo '<option value="daily" ' . selected($o['cron_frequency'], 'daily', false) . '>' . esc_html__('täglich', 'ai-json-extractor-auto-embed-lite') . '</option>';
        echo '<option value="weekly" ' . selected($o['cron_frequency'], 'weekly', false) . '>' . esc_html__('wöchentlich', 'ai-json-extractor-auto-embed-lite') . '</option>';
        echo '</select>';
        echo '</td></tr>';
        echo '</tbody></table>';
        submit_button(esc_html__('Speichern', 'ai-json-extractor-auto-embed-lite'));
        echo '</form>';

        echo '<p>' . esc_html__('Nächster Lauf:', 'ai-json-extractor-auto-embed-lite') . ' <strong>' . ($t ? esc_html(date_i18n('Y-m-d H:i:s', $t)) : '–') . '</strong></p>';

        echo '<form method="post" action="' . esc_url(admin_url('admin-post.php')) . '" style="display:inline-block;margin-right:8px;">';
        echo '<input type="hidden" name="action" value="aije_run_cron_now" />';
        echo '<input type="hidden" name="_wpnonce" value="' . esc_attr($nonce) . '" />';
        echo '<button class="button">' . esc_html__('Jetzt ausführen', 'ai-json-extractor-auto-embed-lite') . '</button>';
        echo '</form>';

        echo '<form method="post" action="' . esc_url(admin_url('admin-post.php')) . '" style="display:inline-block;">';
        echo '<input type="hidden" name="action" value="aije_clear_cron" />';
        echo '<input type="hidden" name="_wpnonce" value="' . esc_attr($nonce) . '" />';
        echo '<button class="button">' . esc_html__('Planung zurücksetzen', 'ai-json-extractor-auto-embed-lite') . '</button>';
        echo '</form>';
    }

    private function tab_logs() {
        $uploads = wp_upload_dir();
        $dir     = trailingslashit($uploads['basedir']) . self::EXPORT_DIR;
        $log     = trailingslashit($dir) . self::LOG_FILE;

        echo '<h2>' . esc_html__('Log Viewer', 'ai-json-extractor-auto-embed-lite') . '</h2>';
        if (file_exists($log)) {
            echo '<table class="widefat striped" style="max-width:1200px;"><thead><tr>';
            echo '<th>timestamp</th><th>filename</th><th>count</th><th>size_kb</th><th>filters</th>';
            echo '</tr></thead><tbody>';
            $lines = @file($log);
            if ($lines) {
                $lines = array_reverse($lines);
                $i     = 0;
                foreach ($lines as $line) {
                    $i++;
                    if ($i > 200) { break; }
                    $cols = str_getcsv(trim($line));
                    if (count($cols) >= 5) {
                        echo '<tr>';
                        foreach (array_slice($cols, 0, 5) as $col) {
                            echo '<td>' . esc_html($col) . '</td>';
                        }
                        echo '</tr>';
                    }
                }
            }
            echo '</tbody></table>';
        } else {
            echo '<p>' . esc_html__('Noch keine Logs vorhanden.', 'ai-json-extractor-auto-embed-lite') . '</p>';
        }
    }

    private function tab_pinghub() {
        $o = $this->get_opts();

        echo '<h2>' . esc_html__('PingHub', 'ai-json-extractor-auto-embed-lite') . '</h2>';
        echo '<p>' . esc_html__('Benachrichtigt Webhooks/LLM-Endpoints bei Veröffentlichung/Aktualisierung.', 'ai-json-extractor-auto-embed-lite') . '</p>';

        echo '<form method="post" action="options.php" style="max-width:900px;">';
        settings_fields(self::OPT_KEY);
        echo '<table class="form-table"><tbody>';

        echo '<tr><th>Aktiv</th><td>';
        echo '<label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[ping_enabled]" value="1" ' . checked($o['ping_enabled'], true, false) . ' /> aktivieren</label>';
        echo '</td></tr>';

        echo '<tr><th>Events</th><td>';
        echo '<label style="margin-right:12px;"><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[ping_events][]" value="publish" ' . checked(in_array('publish', $o['ping_events'], true), true, false) . ' /> Veröffentlichung</label> ';
        echo '<label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[ping_events][]" value="update" ' . checked(in_array('update', $o['ping_events'], true), true, false) . ' /> Aktualisierung</label>';
        echo '</td></tr>';

        echo '<tr><th>Ping-URLs</th><td>';
        echo '<textarea name="' . esc_attr(self::OPT_KEY) . '[ping_urls]" rows="12" style="width:100%;font-family:monospace;">' . esc_textarea($o['ping_urls']) . '</textarea>';
        echo '<p class="description">Kommentarzeilen mit # werden ignoriert.</p>';
        echo '</td></tr>';

        echo '<tr><th>HMAC-Secret</th><td>';
        echo '<input type="text" name="' . esc_attr(self::OPT_KEY) . '[ping_secret]" value="' . esc_attr($o['ping_secret']) . '" class="regular-text" placeholder="optional" />';
        echo '<p class="description"><code>X-AIJE-Signature: sha256=&lt;hash&gt;</code></p>';
        echo '</td></tr>';

        echo '<tr><th>Timeout & Retry</th><td>';
        echo 'Timeout (Sek.): <input type="number" name="' . esc_attr(self::OPT_KEY) . '[ping_timeout]" value="' . esc_attr($o['ping_timeout']) . '" min="2" max="30" style="width:80px;" /> ';
        echo '&nbsp; <label><input type="checkbox" name="' . esc_attr(self::OPT_KEY) . '[ping_retry]" value="1" ' . checked($o['ping_retry'], true, false) . ' /> fehlgeschlagene Pings in Queue</label>';
        echo '</td></tr>';

        echo '</tbody></table>';
        submit_button('Speichern');
        echo '</form>';

        $errs = get_option(self::PING_ERRORS_OPT, array());
        if (is_array($errs) && !empty($errs)) {
            echo '<h3>Letzte Ping-Fehler</h3>';
            echo '<table class="widefat striped" style="max-width:1000px;"><thead><tr><th>Zeit</th><th>URL</th><th>Status/Fehler</th><th>Event</th><th>Post-ID</th></tr></thead><tbody>';
            $i = 0;
            foreach (array_reverse($errs) as $e) {
                $i++;
                if ($i > 50) { break; }
                echo '<tr>';
                echo '<td>' . esc_html($e['time']) . '</td>';
                echo '<td>' . esc_html($e['url']) . '</td>';
                echo '<td>' . esc_html($e['error']) . '</td>';
                echo '<td>' . esc_html($e['event']) . '</td>';
                echo '<td>' . esc_html($e['post_id']) . '</td>';
                echo '</tr>';
            }
            echo '</tbody></table>';
        }
    }

    private function tab_status() {
        $o          = $this->get_opts();
        $uploads    = wp_upload_dir();
        $ok         = isset($uploads['basedir']) && is_dir($uploads['basedir']) && is_writable($uploads['basedir']);
        $licensed = self::license_is_valid();

        echo '<h2>' . esc_html__('Status & Hilfe', 'ai-json-extractor-auto-embed-lite') . '</h2>';
        echo '<table class="widefat striped" style="max-width:800px;">';
        echo '<tr><td><strong>Plugin</strong></td><td>WP Rankify (AI Auto Embed) v1.2.6</td></tr>';
        echo '<tr><td><strong>WordPress</strong></td><td>' . esc_html(get_bloginfo('version')) . '</td></tr>';
        echo '<tr><td><strong>PHP</strong></td><td>' . esc_html(PHP_VERSION) . '</td></tr>';
        echo '<tr><td><strong>Upload-Ordner</strong></td><td>' . ($ok ? 'beschreibbar' : 'NICHT beschreibbar') . '</td></tr>';
        echo '<tr><td><strong>PingHub aktiv</strong></td><td>' . (!empty($o['ping_enabled']) ? 'Ja' : 'Nein') . '</td></tr>';
        echo '<tr><td><strong>Lizenz</strong></td><td>' . ($licensed ? 'aktiv' : 'nicht aktiv') . '</td></tr>';


        echo '</table>';
    }

    /**
     * Hook für künftige Pro-Features. Aktuell nicht im Einsatz.
     */
    private function render_pro_locked( $feature ) {
        // Reserviert für zukünftige Premium-Features
    }

    public function handle_gsc_oauth_callback() {
        if ( ! isset($_GET['page']) || $_GET['page'] !== 'aije-lite' ) { return; }
        if ( ! isset($_GET['tab'])  || $_GET['tab']  !== 'gsc' )       { return; }

        // OAuth Callback
        if ( isset($_GET['gsc_callback']) && isset($_GET['code']) ) {
            $o             = $this->get_opts();
            $client_id     = $o['gsc_client_id']     ?? '';
            $client_secret = $o['gsc_client_secret']  ?? '';
            $redirect_uri  = admin_url( 'tools.php?page=aije-lite&tab=gsc&gsc_callback=1' );
            $resp = wp_remote_post( 'https://oauth2.googleapis.com/token', array(
                'body' => array(
                    'code'          => sanitize_text_field( $_GET['code'] ),
                    'client_id'     => $client_id,
                    'client_secret' => $client_secret,
                    'redirect_uri'  => $redirect_uri,
                    'grant_type'    => 'authorization_code',
                ),
            ));
            if ( ! is_wp_error($resp) ) {
                $token = json_decode( wp_remote_retrieve_body($resp), true );
                if ( ! empty($token['access_token']) ) {
                    update_option( 'aije_gsc_access_token',  $token['access_token'] );
                    update_option( 'aije_gsc_refresh_token', $token['refresh_token'] ?? '' );
                    update_option( 'aije_gsc_token_expiry',  time() + ( $token['expires_in'] ?? 3600 ) );
                    wp_safe_redirect( admin_url('tools.php?page=aije-lite&tab=gsc&gsc_connected=1') );
                    exit;
                }
            }
            wp_safe_redirect( admin_url('tools.php?page=aije-lite&tab=gsc&gsc_error=1') );
            exit;
        }

        // Trennen
        if ( isset($_GET['gsc_disconnect']) ) {
            delete_option('aije_gsc_access_token');
            delete_option('aije_gsc_refresh_token');
            delete_option('aije_gsc_token_expiry');
            wp_safe_redirect( admin_url('tools.php?page=aije-lite&tab=gsc') );
            exit;
        }
    }

    private function tab_gsc() {
        $o            = $this->get_opts();
        $client_id    = $o['gsc_client_id']     ?? '';
        $client_secret= $o['gsc_client_secret']  ?? '';
        $access_token = $this->get_valid_gsc_token();
        $redirect_uri = admin_url( 'tools.php?page=aije-lite&tab=gsc&gsc_callback=1' );

        // Erfolgsmeldungen
        if ( isset($_GET['gsc_connected']) ) {
            echo '<div class="notice notice-success is-dismissible"><p>✓ Google Search Console erfolgreich verbunden!</p></div>';
        }
        if ( isset($_GET['gsc_error']) ) {
            echo '<div class="notice notice-error"><p>Fehler beim Verbinden. Bitte prüfe Client-ID und Secret.</p></div>';
        }

        // Verbinden-Button
        if ( isset($_POST['aije_gsc_save_nonce']) && wp_verify_nonce($_POST['aije_gsc_save_nonce'], 'aije_gsc_save') ) {
            $o['gsc_client_id']     = sanitize_text_field( $_POST['gsc_client_id'] ?? '' );
            $o['gsc_client_secret'] = sanitize_text_field( $_POST['gsc_client_secret'] ?? '' );
            update_option( self::OPT_KEY, $o );
            $client_id     = $o['gsc_client_id'];
            $client_secret = $o['gsc_client_secret'];
            echo '<div class="notice notice-success"><p>✓ Zugangsdaten gespeichert.</p></div>';
        }


        echo '<div style="max-width:780px;margin-top:16px;">';

        // ── VERBUNDEN: Daten anzeigen ─────────────────────────────────────────
        if ( $access_token ) {
            echo '<div style="background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;padding:16px 20px;margin-bottom:20px;display:flex;justify-content:space-between;align-items:center;">';
            echo '<span style="color:#15803d;font-weight:700;">✓ Google Search Console verbunden</span>';
            echo '<a href="' . esc_url(admin_url('tools.php?page=aije-lite&tab=gsc&gsc_disconnect=1')) . '" style="font-size:12px;color:#888;text-decoration:none;">Verbindung trennen</a>';
            echo '</div>';
            $this->render_gsc_data( $access_token );
            echo '</div>';
            return;
        }

        // ── NICHT VERBUNDEN: Schritt-für-Schritt Anleitung ───────────────────
        echo '<div style="background:#fff8f0;border:1px solid #f29400;border-radius:10px;padding:20px 24px;margin-bottom:24px;">';
        echo '<div style="font-size:16px;font-weight:700;margin-bottom:4px;">🔍 Google Search Console verbinden</div>';
        echo '<p style="font-size:13px;color:#555;margin:0;">Sieh direkt im Plugin welche Keywords deine Artikel ranken, wie oft sie geklickt werden und wo sie in den Suchergebnissen stehen.</p>';
        echo '</div>';

        // Schritt-Container
        $steps = array(
            array(
                'num'   => '1',
                'title' => 'Google Cloud Projekt erstellen',
                'desc'  => 'Öffne die Google Cloud Console und erstelle ein neues Projekt (oder wähle ein bestehendes).',
                'link'  => 'https://console.cloud.google.com/projectcreate',
                'btn'   => 'Google Cloud Console öffnen →',
                'hint'  => 'Projektname: z.B. „WP Rankify". Klicke dann auf <strong>Erstellen</strong>.',
            ),
            array(
                'num'   => '2',
                'title' => 'Search Console API aktivieren',
                'desc'  => 'Aktiviere die Google Search Console API für dein Projekt.',
                'link'  => 'https://console.cloud.google.com/apis/library/searchconsole.googleapis.com',
                'btn'   => 'Search Console API aktivieren →',
                'hint'  => 'Klicke auf den blauen <strong>Aktivieren</strong> Button.',
            ),
            array(
                'num'   => '3',
                'title' => 'OAuth-Zustimmungsbildschirm konfigurieren',
                'desc'  => 'Richte den OAuth-Zustimmungsbildschirm ein (nur einmalig nötig).',
                'link'  => 'https://console.cloud.google.com/apis/credentials/consent',
                'btn'   => 'OAuth-Zustimmung einrichten →',
                'hint'  => 'Wähle <strong>Extern</strong> → App-Name eintragen → Support-E-Mail eintragen → Speichern. Unter <strong>Bereiche</strong> nichts ändern.',
            ),
            array(
                'num'   => '3b',
                'title' => 'Testnutzer eintragen',
                'desc'  => 'Solange die App nicht bei Google verifiziert ist, musst du dich selbst als Testnutzer eintragen.',
                'link'  => 'https://console.cloud.google.com/auth/audience',
                'btn'   => 'Testnutzer verwalten →',
                'hint'  => 'Klicke auf <strong>„+ Add Users"</strong> und trage die Google-E-Mail-Adresse ein mit der du dich verbinden möchtest. Ohne diesen Schritt erscheint beim Verbinden „Zugriff blockiert".',
            ),
            array(
                'num'   => '4',
                'title' => 'OAuth-Zugangsdaten erstellen',
                'desc'  => 'Erstelle OAuth 2.0 Client-IDs für dein Plugin.',
                'link'  => 'https://console.cloud.google.com/apis/credentials/oauthclient',
                'btn'   => 'Zugangsdaten erstellen →',
                'hint'  => 'Anwendungstyp: <strong>Webanwendung</strong>. Name: „WP Rankify". Unter <strong>Autorisierte Weiterleitungs-URIs</strong> folgende URL eintragen:',
                'copy'  => $redirect_uri,
            ),
        );

        foreach ( $steps as $step ) {
            echo '<div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:20px 24px;margin-bottom:12px;display:flex;gap:16px;">';
            echo '<div style="flex-shrink:0;width:32px;height:32px;background:#f29400;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;">' . esc_html($step['num']) . '</div>';
            echo '<div style="flex:1;">';
            echo '<div style="font-size:14px;font-weight:700;margin-bottom:4px;">' . esc_html($step['title']) . '</div>';
            echo '<p style="font-size:13px;color:#555;margin:0 0 10px 0;">' . esc_html($step['desc']) . '</p>';
            if ( ! empty($step['hint']) ) {
                echo '<div style="background:#f8f9fa;border-radius:6px;padding:10px 14px;font-size:12px;color:#555;margin-bottom:10px;">💡 ' . wp_kses_post($step['hint']) . '</div>';
            }
            if ( ! empty($step['copy']) ) {
                echo '<div style="background:#1e1e1e;color:#d4d4d4;border-radius:6px;padding:10px 14px;font-size:12px;font-family:monospace;margin-bottom:10px;display:flex;justify-content:space-between;align-items:center;">';
                echo '<span>' . esc_html($step['copy']) . '</span>';
                echo '<button type="button" onclick="navigator.clipboard.writeText(\'' . esc_js($step['copy']) . '\');this.textContent=\'✓ Kopiert\';" style="background:#f29400;color:#fff;border:none;border-radius:4px;padding:4px 10px;font-size:11px;cursor:pointer;">Kopieren</button>';
                echo '</div>';
            }
            echo '<a href="' . esc_url($step['link']) . '" target="_blank" style="display:inline-block;background:#111;color:#fff;padding:8px 16px;border-radius:6px;font-size:12px;font-weight:600;text-decoration:none;">' . esc_html($step['btn']) . '</a>';
            echo '</div></div>';
        }

        // Schritt 5: Client-ID + Secret eintragen
        echo '<div style="background:#fff;border:2px solid #f29400;border-radius:10px;padding:20px 24px;margin-bottom:24px;">';
        echo '<div style="display:flex;gap:16px;">';
        echo '<div style="flex-shrink:0;width:32px;height:32px;background:#f29400;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;">5</div>';
        echo '<div style="flex:1;">';
        echo '<div style="font-size:14px;font-weight:700;margin-bottom:4px;">Client-ID und Client-Secret eintragen</div>';
        echo '<p style="font-size:13px;color:#555;margin:0 0 14px 0;">Nach dem Erstellen der Zugangsdaten zeigt Google dir Client-ID und Client-Secret an. Trage sie hier ein.</p>';
        echo '<form method="post">';
        wp_nonce_field('aije_gsc_save','aije_gsc_save_nonce');
        echo '<div style="display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px;">';
        echo '<div><label style="display:block;font-size:12px;font-weight:600;margin-bottom:4px;">Client-ID</label>';
        echo '<input type="text" name="gsc_client_id" value="' . esc_attr($client_id) . '" placeholder="XXXXXXXXXXXX.apps.googleusercontent.com" style="width:100%;padding:8px 12px;border:1px solid #ddd;border-radius:6px;font-size:12px;font-family:monospace;"></div>';
        echo '<div><label style="display:block;font-size:12px;font-weight:600;margin-bottom:4px;">Client-Secret</label>';
        echo '<input type="text" autocomplete="new-password" name="gsc_client_secret" value="' . esc_attr($client_secret) . '" placeholder="GOCSPX-..." style="width:100%;padding:8px 12px;border:1px solid #ddd;border-radius:6px;font-size:12px;font-family:monospace;"></div>';
        echo '</div>';
        echo '<button type="submit" style="background:#111;color:#fff;border:none;padding:9px 20px;border-radius:6px;font-size:13px;font-weight:600;cursor:pointer;">Speichern & weiter</button>';
        echo '</form></div></div></div>';

        // Schritt 6: Mit Google verbinden
        if ( $client_id && $client_secret ) {
            $oauth_url = 'https://accounts.google.com/o/oauth2/v2/auth?' . http_build_query(array(
                'client_id'     => $client_id,
                'redirect_uri'  => $redirect_uri,
                'response_type'=> 'code',
                'scope'         => 'https://www.googleapis.com/auth/webmasters.readonly',
                'access_type'  => 'offline',
                'prompt'        => 'consent',
            ));
            echo '<div style="background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;padding:20px 24px;display:flex;gap:16px;">';
            echo '<div style="flex-shrink:0;width:32px;height:32px;background:#22c55e;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;">6</div>';
            echo '<div style="flex:1;">';
            echo '<div style="font-size:14px;font-weight:700;margin-bottom:4px;color:#15803d;">Mit Google verbinden</div>';
            echo '<p style="font-size:13px;color:#555;margin:0 0 14px 0;">Jetzt mit deinem Google-Account verbinden der Zugriff auf die Search Console hat.</p>';
            echo '<a href="' . esc_url($oauth_url) . '" style="display:inline-flex;align-items:center;gap:8px;background:#4285f4;color:#fff;padding:10px 20px;border-radius:6px;font-size:13px;font-weight:600;text-decoration:none;">🔑 Mit Google verbinden</a>';
            echo '</div></div>';
        }

        echo '</div>';
    }

    private function refresh_gsc_token() {
        $o             = $this->get_opts();
        $client_id     = $o['gsc_client_id']     ?? '';
        $client_secret = $o['gsc_client_secret']  ?? '';
        $refresh_token = get_option( 'aije_gsc_refresh_token', '' );
        if ( ! $refresh_token || ! $client_id || ! $client_secret ) { return false; }

        $resp = wp_remote_post( 'https://oauth2.googleapis.com/token', array(
            'body' => array(
                'client_id'     => $client_id,
                'client_secret' => $client_secret,
                'refresh_token' => $refresh_token,
                'grant_type'    => 'refresh_token',
            ),
            'timeout' => 10,
        ));
        if ( is_wp_error($resp) ) { return false; }
        $token = json_decode( wp_remote_retrieve_body($resp), true );
        if ( empty($token['access_token']) ) { return false; }

        update_option( 'aije_gsc_access_token', $token['access_token'] );
        update_option( 'aije_gsc_token_expiry', time() + ( $token['expires_in'] ?? 3600 ) );
        return $token['access_token'];
    }

    private function get_valid_gsc_token() {
        $access_token = get_option( 'aije_gsc_access_token', '' );
        $expiry       = (int) get_option( 'aije_gsc_token_expiry', 0 );
        // Token läuft in weniger als 5 Minuten ab oder ist bereits abgelaufen
        if ( $expiry && time() > $expiry - 300 ) {
            $new_token = $this->refresh_gsc_token();
            if ( $new_token ) { return $new_token; }
            // Refresh fehlgeschlagen → Token löschen → neu verbinden
            delete_option( 'aije_gsc_access_token' );
            return '';
        }
        return $access_token;
    }

    private function render_gsc_data( $access_token ) {
        // Token ggf. erneuern
        $access_token = $this->get_valid_gsc_token();
        if ( ! $access_token ) {
            echo '<div class="notice notice-warning"><p>⚠ Google Token abgelaufen. Bitte <a href="' . esc_url(admin_url('tools.php?page=aije-lite&tab=gsc&gsc_disconnect=1')) . '">Verbindung trennen</a> und neu verbinden.</p></div>';
            return;
        }

        // Property-Liste holen
        $resp = wp_remote_get( 'https://www.googleapis.com/webmasters/v3/sites', array(
            'headers' => array( 'Authorization' => 'Bearer ' . $access_token ),
            'timeout' => 10,
        ));
        if ( is_wp_error($resp) ) {
            echo '<p style="color:#ef4444;">Fehler beim Abrufen der Properties.</p>';
            return;
        }
        $sites = json_decode( wp_remote_retrieve_body($resp), true );
        // Prüfen ob Token abgelaufen (401)
        $http_code = wp_remote_retrieve_response_code($resp);
        if ( $http_code === 401 ) {
            $new_token = $this->refresh_gsc_token();
            if ( $new_token ) {
                // Nochmal versuchen mit neuem Token
                $resp  = wp_remote_get( 'https://www.googleapis.com/webmasters/v3/sites', array(
                    'headers' => array( 'Authorization' => 'Bearer ' . $new_token ),
                    'timeout' => 10,
                ));
                $sites = json_decode( wp_remote_retrieve_body($resp), true );
            } else {
                delete_option('aije_gsc_access_token');
                echo '<div class="notice notice-warning"><p>⚠ Google Token abgelaufen. Bitte <a href="' . esc_url(admin_url('tools.php?page=aije-lite&tab=gsc&gsc_disconnect=1')) . '">Verbindung trennen</a> und neu verbinden.</p></div>';
                return;
            }
        }
        $entries = $sites['siteEntry'] ?? array();
        if ( empty($entries) ) {
            echo '<p style="color:#888;">Keine Search Console Properties gefunden. Stelle sicher dass deine Website in der Google Search Console verifiziert ist.</p>';
            return;
        }

        // Property auswählen
        $selected = get_option('aije_gsc_property', $entries[0]['siteUrl'] ?? '');
        if ( isset($_POST['gsc_property']) ) {
            $selected = sanitize_text_field( $_POST['gsc_property'] );
            update_option('aije_gsc_property', $selected);
        }

        // Property-Auswahl
        echo '<div style="margin-bottom:20px;display:flex;align-items:center;gap:10px;">';
        echo '<label style="font-size:13px;font-weight:600;">Property:</label>';
        $form_action = add_query_arg( array_filter(array(
            'page'     => 'aije-lite',
            'tab'      => 'gsc',
            'gsc_days' => $_GET['gsc_days'] ?? null,
            'gsc_sort' => $_GET['gsc_sort'] ?? null,
            'gsc_dir'  => $_GET['gsc_dir']  ?? null,
        )), admin_url('tools.php') );
        echo '<form method="post" action="' . esc_url($form_action) . '" style="display:inline;">';
        echo '<select name="gsc_property" onchange="this.form.submit()" style="padding:7px 12px;border:1px solid #ddd;border-radius:6px;font-size:13px;">';
        foreach ( $entries as $site ) {
            $url = $site['siteUrl'] ?? '';
            echo '<option value="' . esc_attr($url) . '" ' . selected($selected,$url,false) . '>' . esc_html($url) . '</option>';
        }
        echo '</select></form></div>';

        // Zeitraum aus GET-Parameter
        $days_map = array('7'=>7, '28'=>28, '90'=>90);
        $days     = isset($_GET['gsc_days']) && isset($days_map[$_GET['gsc_days']]) ? (int)$_GET['gsc_days'] : 28;
        // GSC liefert Daten mit ~2 Tagen Verzögerung → gestern als Endpunkt
        $end      = date('Y-m-d', strtotime('-2 days'));
        $start    = date('Y-m-d', strtotime('-' . ($days + 2) . ' days'));
        // Vergleichszeitraum (gleiche Länge davor)
        $cmp_end   = date('Y-m-d', strtotime('-' . ($days + 2) . ' days'));
        $cmp_start = date('Y-m-d', strtotime('-' . ($days * 2 + 2) . ' days'));
        $body  = wp_json_encode(array(
            'startDate'  => $start,
            'endDate'    => $end,
            'dimensions' => array('page'),
            'rowLimit'   => 500,
            'orderBy'    => array(array('fieldName'=>'clicks','sortOrder'=>'DESCENDING')),
        ));
        $resp2 = wp_remote_post(
            'https://www.googleapis.com/webmasters/v3/sites/' . urlencode($selected) . '/searchAnalytics/query',
            array(
                'headers' => array('Authorization' => 'Bearer ' . $access_token, 'Content-Type' => 'application/json'),
                'body'    => $body,
                'timeout' => 15,
            )
        );
        $data2 = json_decode( wp_remote_retrieve_body($resp2), true );
        $rows  = $data2['rows'] ?? array();

        // Vergleichszeitraum
        $cmp_body = wp_json_encode(array(
            'startDate'  => $cmp_start,
            'endDate'    => $cmp_end,
            'dimensions' => array('page'),
            'rowLimit'   => 500,
        ));
        $resp3   = wp_remote_post(
            'https://www.googleapis.com/webmasters/v3/sites/' . urlencode($selected) . '/searchAnalytics/query',
            array(
                'headers' => array('Authorization' => 'Bearer ' . $access_token, 'Content-Type' => 'application/json'),
                'body'    => $cmp_body,
                'timeout' => 15,
            )
        );
        $cmp_rows = json_decode( wp_remote_retrieve_body($resp3), true )['rows'] ?? array();
        // Vergleichsdaten indexieren: url → data
        $cmp_index = array();
        foreach ( $cmp_rows as $cr ) {
            $cmp_index[$cr['keys'][0]] = $cr;
        }

        // Zeitraum-Umschalter
        echo '<div style="display:flex;align-items:center;gap:8px;margin-bottom:14px;">';
        echo '<span style="font-size:12px;color:#888;">Zeitraum:</span>';
        foreach ( array('7'=>'7 Tage','28'=>'28 Tage','90'=>'90 Tage') as $d => $label ) {
            $active = ($days == $d);
            $url_d  = add_query_arg( array('gsc_days'=>$d, 'gsc_sort'=>$_GET['gsc_sort']??'clicks', 'gsc_dir'=>$_GET['gsc_dir']??'desc'), admin_url('tools.php?page=aije-lite&tab=gsc') );
            echo '<a href="' . esc_url($url_d) . '" style="padding:4px 12px;border-radius:5px;font-size:12px;font-weight:600;text-decoration:none;'
                . ($active ? 'background:#f29400;color:#fff;' : 'background:#f3f4f6;color:#555;') . '">' . esc_html($label) . '</a>';
        }
        echo '<span style="font-size:11px;color:#aaa;margin-left:8px;">' . count($rows) . ' Seiten · ' . esc_html($start) . ' – ' . esc_html($end) . '</span>';
        echo '</div>';

        if ( empty($rows) ) {
            echo '<p style="color:#888;">Keine Daten gefunden.</p>';
            return;
        }

        // Issues direkt aus Post-Daten berechnen (ohne gecachten Score)
        $o          = $this->get_opts();
        $types      = $o['enabled_post_types'] ?? array('post');
        $all_posts  = get_posts( array('post_type'=>$types,'posts_per_page'=>-1,'post_status'=>'publish') );
        $url_issues = array();
        foreach ( $all_posts as $p ) {
            $issues = array();
            // Kein Beitragsbild
            if ( ! has_post_thumbnail($p->ID) ) {
                $issues[] = array('msg'=>'Kein Beitragsbild','severity'=>'medium');
            }
            // Keine Meta-Description
            $meta = get_post_meta($p->ID,'_aije_metadesc',true)
                 ?: get_post_meta($p->ID,'_yoast_wpseo_metadesc',true)
                 ?: get_post_meta($p->ID,'rank_math_description',true);
            if ( empty($meta) ) {
                $issues[] = array('msg'=>'Keine Meta-Description','severity'=>'high');
            }
            // Text zu kurz
            $content = wp_strip_all_tags($p->post_content);
            if ( str_word_count($content) < 300 ) {
                $issues[] = array('msg'=>'Text zu kurz','severity'=>'medium');
            }
            // Kein H2
            if ( ! preg_match('/<h2/i', $p->post_content) ) {
                $issues[] = array('msg'=>'Kein H2','severity'=>'medium');
            }
            // Keine internen Links
            if ( strpos( $p->post_content, home_url() ) === false ) {
                $issues[] = array('msg'=>'Kein internes Linking','severity'=>'medium');
            }
            // Kein E-E-A-T
            $job = get_user_meta( $p->post_author, 'aije_job_title', true );
            if ( empty($job) ) {
                $issues[] = array('msg'=>'Kein E-E-A-T Profil','severity'=>'high');
            }
            if ( ! empty($issues) ) {
                $purl = trailingslashit( get_permalink($p->ID) );
                $url_issues[$purl] = $issues;
            }
        }

        // ── Gesamtstatistiken ──────────────────────────────────────────────────
        $total_clicks   = array_sum( array_column( $rows, 'clicks' ) );
        $total_impr     = array_sum( array_column( $rows, 'impressions' ) );
        // Gewichteter Durchschnitt (wie GSC): nach Impressionen gewichtet
        $total_impr_for_avg = array_sum( array_column( $rows, 'impressions' ) );
        if ( $total_impr_for_avg > 0 ) {
            $weighted_ctr = 0;
            $weighted_pos = 0;
            foreach ( $rows as $r ) {
                $impr_weight  = ($r['impressions'] ?? 0) / $total_impr_for_avg;
                $weighted_ctr += ($r['ctr']      ?? 0) * $impr_weight;
                $weighted_pos += ($r['position'] ?? 0) * $impr_weight;
            }
            $avg_ctr = round( $weighted_ctr * 100, 1 );
            $avg_pos = round( $weighted_pos, 1 );
        } else {
            $avg_ctr = 0;
            $avg_pos = 0;
        }
        $cmp_total_clicks = array_sum( array_column( $cmp_rows, 'clicks' ) );
        $cmp_total_impr   = array_sum( array_column( $cmp_rows, 'impressions' ) );
        $cmp_impr_total = array_sum( array_column( $cmp_rows, 'impressions' ) );
        if ( $cmp_impr_total > 0 ) {
            $cmp_w_pos = 0;
            foreach ( $cmp_rows as $r ) {
                $cmp_w_pos += ($r['position'] ?? 0) * ( ($r['impressions'] ?? 0) / $cmp_impr_total );
            }
            $cmp_avg_pos = round( $cmp_w_pos, 1 );
        } else {
            $cmp_avg_pos = 0;
        }
        $positions_won  = 0;
        $positions_lost = 0;
        foreach ( $rows as $row ) {
            $url = $row['keys'][0] ?? '';
            $cmp = $cmp_index[$url] ?? null;
            if ( ! $cmp ) { continue; }
            $delta = round($row['position'] ?? 0, 1) - round($cmp['position'] ?? 0, 1);
            if ( $delta < -0.5 )    { $positions_won++; }
            elseif ( $delta > 0.5 ) { $positions_lost++; }
        }
        $dc_clicks = $total_clicks - $cmp_total_clicks;
        $dc_impr   = $total_impr - $cmp_total_impr;
        $dc_pos    = $avg_pos - $cmp_avg_pos;
        $fmt_delta = function($v, $invert=false) {
            if ($v == 0) return '<span style="color:#aaa;">±0</span>';
            $pos = $invert ? $v < 0 : $v > 0;
            $c = $pos ? '#22c55e' : '#ef4444';
            return '<span style="color:' . $c . ';font-weight:600;">' . ($v > 0 ? '+' : '') . round($v,1) . '</span>';
        };
        echo '<div style="display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin-bottom:20px;">';
        $kpi = array(
            array('Klicks',       number_format_i18n($total_clicks), $fmt_delta($dc_clicks), ''),
            array('Impressionen', number_format_i18n($total_impr),   $fmt_delta($dc_impr),   ''),
            array('Ø CTR',        $avg_ctr . '%',                    '',                     ''),
            array('Ø Position',   $avg_pos,                          $fmt_delta(round($dc_pos,1), true), ''),
            array('📈 Gewonnen',  $positions_won . ' Seiten',        '',                     '#22c55e'),
            array('📉 Verloren',  $positions_lost . ' Seiten',       '',                     '#ef4444'),
        );
        foreach ( $kpi as $s ) {
            echo '<div style="background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:14px 16px;">';
            echo '<div style="font-size:11px;color:#888;margin-bottom:4px;">' . esc_html($s[0]) . '</div>';
            echo '<div style="font-size:22px;font-weight:700;color:' . esc_attr($s[3] ?: '#111') . ';line-height:1.2;">' . esc_html($s[1]) . '</div>';
            if ( $s[2] ) { echo '<div style="font-size:11px;margin-top:3px;">vs. Vorperiode: ' . $s[2] . '</div>'; }
            echo '</div>';
        }
        echo '</div>';

        // Suchfeld
        echo '<input type="text" id="aije-gsc-search" placeholder="Seite filtern…"
            style="width:100%;padding:8px 12px;border:1px solid #ddd;border-radius:6px;font-size:13px;margin-bottom:10px;"
            oninput="aije_gsc_filter(this.value)">';

        echo '<div style="overflow-x:auto;">';
        echo '<table id="aije-gsc-table" style="width:100%;border-collapse:collapse;font-size:13px;">';
        echo '<thead><tr style="border-bottom:2px solid #e5e7eb;">';
        $cols = array(
            'page'       => array('Seite',         'left',  ''),
            'tasks'      => array('Tasks',          'left',  ''),
            'clicks'     => array('Klicks',         'right', 'desc'),
            'clicks_d'   => array('±',              'right', ''),
            'impr'       => array('Impressionen',   'right', ''),
            'ctr'        => array('CTR',            'right', ''),
            'pos'        => array('Ø Position',     'right', ''),
            'pos_d'      => array('±',              'right', ''),
        );
        foreach ( $cols as $key => $col ) {
            $align = $col[1];
            $sort  = $col[2] ? "aije_gsc_sort('$key',this)" : ($key !== 'page' && $key !== 'tasks' ? "aije_gsc_sort('$key',this)" : '');
            $no_sort = in_array($key, array('tasks'));
            $cursor  = ! $no_sort ? 'cursor:pointer;user-select:none;' : '';
            $onclick = ! $no_sort ? ' onclick="aije_gsc_sort(\'' . esc_js($key) . '\',this)"' : '';
            echo '<th style="text-align:' . $align . ';padding:8px 4px;color:#888;font-weight:600;' . $cursor . '"' . $onclick . ' data-col="' . $key . '">';
            echo esc_html($col[0]);
            if ( ! $no_sort ) { echo ' <span class="aije-sort-icon" style="font-size:10px;opacity:.5;">↕</span>'; }
            echo '</th>';
        }
        echo '</tr></thead><tbody id="aije-gsc-tbody">';

        foreach ( $rows as $row ) {
            $url      = $row['keys'][0] ?? '';
            $url_trail = trailingslashit($url);
            $path     = str_replace( home_url(), '', $url );
            $clicks   = (int)($row['clicks'] ?? 0);
            $impr     = (int)($row['impressions'] ?? 0);
            $ctr_raw  = round( ($row['ctr'] ?? 0) * 100, 1 );
            $pos      = round( $row['position'] ?? 0, 1 );
            $pos_c    = $pos <= 3 ? '#22c55e' : ($pos <= 10 ? '#f59e0b' : '#ef4444');

            // Tasks für diese URL
            $issues   = $url_issues[$url_trail] ?? array();
            $task_html = '';
            $task_count = 0;
            if ( ! empty($issues) ) {
                foreach ( $issues as $issue ) {
                    $sev   = $issue['severity'] ?? 'medium';
                    $sev_c = $sev === 'high' ? '#ef4444' : ($sev === 'medium' ? '#f59e0b' : '#888');
                    $task_html .= '<span title="' . esc_attr($issue['msg']) . '" style="display:inline-block;background:' . $sev_c . '22;color:' . $sev_c . ';border:1px solid ' . $sev_c . '44;border-radius:4px;padding:1px 6px;font-size:10px;margin:1px;white-space:nowrap;max-width:160px;overflow:hidden;text-overflow:ellipsis;">'
                        . esc_html( mb_substr($issue['msg'], 0, 25) . (mb_strlen($issue['msg']) > 25 ? '…' : '') )
                        . '</span>';
                    $task_count++;
                }
            }

            echo '<tr style="border-bottom:1px solid #f3f4f6;" data-url="' . esc_attr(strtolower($path)) . '">';
            echo '<td style="padding:8px 4px;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">';
            echo '<a href="' . esc_url($url) . '" target="_blank" style="color:#3b82f6;text-decoration:none;" title="' . esc_attr($path) . '">' . esc_html( strlen($path) > 40 ? substr($path,0,37).'…' : $path ) . '</a>';
            echo '</td>';
            echo '<td style="padding:8px 4px;max-width:200px;">';
            if ( $task_html ) {
                echo '<div style="display:flex;flex-wrap:wrap;gap:2px;">' . $task_html . '</div>';
            } else {
                echo '<span style="color:#22c55e;font-size:11px;">✓ OK</span>';
            }
            echo '</td>';
            // Vergleichsdaten
            $cmp = $cmp_index[$url] ?? null;
            $d_clicks = $cmp ? $clicks - (int)($cmp['clicks'] ?? 0) : null;
            $d_pos    = $cmp ? $pos - round($cmp['position'] ?? 0, 1) : null;

            $delta_clicks = '';
            if ( $d_clicks !== null ) {
                $dc   = $d_clicks > 0 ? '+' . $d_clicks : (string)$d_clicks;
                $dc_c = $d_clicks > 0 ? '#22c55e' : ($d_clicks < 0 ? '#ef4444' : '#888');
                $delta_clicks = '<span style="color:' . $dc_c . ';font-weight:600;">' . $dc . '</span>';
            }
            $delta_pos = '';
            if ( $d_pos !== null && $d_pos != 0 ) {
                $dp     = round($d_pos, 1);
                $dp_str = $dp > 0 ? '+' . $dp : (string)$dp;
                $dp_c   = $dp < 0 ? '#22c55e' : '#ef4444';
                $delta_pos = '<span style="color:' . $dp_c . ';font-weight:600;">' . $dp_str . '</span>';
            }

            echo '<td style="text-align:right;padding:8px 4px;font-weight:600;" data-val="' . $clicks . '">' . number_format_i18n($clicks) . '</td>';
            echo '<td style="text-align:right;padding:8px 4px;font-size:11px;" data-val="' . ($d_clicks ?? 0) . '">' . ($delta_clicks ?: '<span style="color:#ccc;">–</span>') . '</td>';
            echo '<td style="text-align:right;padding:8px 4px;color:#888;" data-val="' . $impr . '">' . number_format_i18n($impr) . '</td>';
            echo '<td style="text-align:right;padding:8px 4px;" data-val="' . $ctr_raw . '">' . $ctr_raw . '%</td>';
            echo '<td style="text-align:right;padding:8px 4px;font-weight:700;color:' . $pos_c . ';" data-val="' . $pos . '">' . $pos . '</td>';
            echo '<td style="text-align:right;padding:8px 4px;font-size:11px;" data-val="' . ($d_pos ?? 0) . '">' . ($delta_pos ?: '<span style="color:#ccc;">–</span>') . '</td>';
            echo '</tr>';
        }
        echo '</tbody></table></div>';
        ?>
<script>
var aije_gsc_sort_col = 'clicks';
var aije_gsc_sort_dir = -1;
function aije_gsc_sort(col, th) {
    if (aije_gsc_sort_col === col) { aije_gsc_sort_dir *= -1; }
    else { aije_gsc_sort_col = col; aije_gsc_sort_dir = -1; }
    document.querySelectorAll('#aije-gsc-table .aije-sort-icon').forEach(function(el){ el.textContent = '↕'; el.style.opacity='.5'; });
    if (th) { var icon = th.querySelector('.aije-sort-icon'); if(icon){ icon.textContent = aije_gsc_sort_dir < 0 ? '↓' : '↑'; icon.style.opacity='1'; } }
    var tbody = document.getElementById('aije-gsc-tbody');
    var rows = Array.from(tbody.querySelectorAll('tr'));
    var colIdx = {'page':0,'tasks':1,'clicks':2,'clicks_d':3,'impr':4,'ctr':5,'pos':6,'pos_d':7};
    var idx = colIdx[col] ?? 2;
    rows.sort(function(a,b){
        var av = a.cells[idx] ? (a.cells[idx].dataset.val !== undefined ? parseFloat(a.cells[idx].dataset.val) : a.cells[idx].textContent.trim()) : 0;
        var bv = b.cells[idx] ? (b.cells[idx].dataset.val !== undefined ? parseFloat(b.cells[idx].dataset.val) : b.cells[idx].textContent.trim()) : 0;
        if (typeof av === 'string') return aije_gsc_sort_dir * av.localeCompare(bv);
        return aije_gsc_sort_dir * (av - bv);
    });
    rows.forEach(function(r){ tbody.appendChild(r); });
}
function aije_gsc_filter(val) {
    val = val.toLowerCase();
    document.querySelectorAll('#aije-gsc-tbody tr').forEach(function(r){
        r.style.display = r.dataset.url.indexOf(val) !== -1 ? '' : 'none';
    });
}
// Sortierung aus URL lesen
(function(){
    var params = new URLSearchParams(window.location.search);
    var col = params.get('gsc_sort') || 'clicks';
    var dir = params.get('gsc_dir')  || 'desc';
    aije_gsc_sort_col = col;
    aije_gsc_sort_dir = dir === 'asc' ? 1 : -1;
    document.addEventListener('DOMContentLoaded', function(){
        var th = document.querySelector('#aije-gsc-table th[data-col="' + col + '"]');
        aije_gsc_sort(col, th);
    });
})();

// Bei Sortierung URL aktualisieren (ohne Reload)
var _orig_sort = aije_gsc_sort;
aije_gsc_sort = function(col, th) {
    _orig_sort(col, th);
    var url = new URL(window.location.href);
    url.searchParams.set('gsc_sort', col);
    url.searchParams.set('gsc_dir', aije_gsc_sort_dir < 0 ? 'desc' : 'asc');
    history.replaceState(null, '', url.toString());
};
</script>
        <?php
    }

        private function tab_llms() {
        $nonce = wp_create_nonce( 'aije_llms_save' );
        if ( isset($_POST['aije_llms_nonce']) && wp_verify_nonce($_POST['aije_llms_nonce'], 'aije_llms_save') ) {
            update_option( 'aije_llms_enabled',    ! empty($_POST['llms_enabled'])    ? 1 : 0 );
            update_option( 'aije_llms_custom',     sanitize_textarea_field( wp_unslash($_POST['llms_custom'] ?? '') ) );
            update_option( 'aije_llms_block_bots', ! empty($_POST['llms_block_bots']) ? 1 : 0 );
            // Rewrite Flush nach Aktivierung
            flush_rewrite_rules();
            echo '<div class="notice notice-success is-dismissible"><p>&#10003; llms.txt Einstellungen gespeichert.</p></div>';
        }
        $enabled    = get_option( 'aije_llms_enabled', 1 );
        $custom     = get_option( 'aije_llms_custom', '' );
        $block_bots = get_option( 'aije_llms_block_bots', 0 );
        $llms_url   = home_url( '/llms.txt' );
        $preview    = $this->generate_llms_content();

        echo '<div style="max-width:760px;margin-top:16px;">';

        // Status
        echo '<div style="display:flex;align-items:center;gap:12px;margin-bottom:20px;">';
        if ( $enabled ) {
            echo '<span style="background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0;padding:5px 14px;border-radius:20px;font-size:12px;font-weight:700;">✓ llms.txt aktiv</span>';
            echo '<a href="' . esc_url($llms_url) . '" target="_blank" style="font-size:12px;color:#3b82f6;">' . esc_html($llms_url) . ' ↗</a>';
        } else {
            echo '<span style="background:#f9fafb;color:#888;border:1px solid #e5e7eb;padding:5px 14px;border-radius:20px;font-size:12px;">llms.txt deaktiviert</span>';
        }
        echo '</div>';

        echo '<form method="post">';
        echo '<input type="hidden" name="aije_llms_nonce" value="' . esc_attr($nonce) . '">';

        echo '<div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:20px 24px;margin-bottom:16px;">';
        echo '<label style="display:flex;align-items:center;gap:10px;cursor:pointer;">';
        echo '<input type="checkbox" name="llms_enabled" value="1" ' . checked($enabled,1,false) . ' style="width:16px;height:16px;">';
        echo '<div><div style="font-size:14px;font-weight:700;">llms.txt aktivieren</div>';
        echo '<div style="font-size:12px;color:#888;margin-top:2px;">Erstellt automatisch eine <code>/llms.txt</code> Datei die KI-Systemen erklärt wer du bist und was deine Website bietet.</div></div></label></div>';

        echo '<div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:20px 24px;margin-bottom:16px;">';
        echo '<label style="display:flex;align-items:center;gap:10px;cursor:pointer;">';
        echo '<input type="checkbox" name="llms_block_bots" value="1" ' . checked($block_bots,1,false) . ' style="width:16px;height:16px;">';
        echo '<div><div style="font-size:14px;font-weight:700;">Aggressive KI-Crawler blockieren</div>';
        echo '<div style="font-size:12px;color:#888;margin-top:2px;">Trägt GPTBot, CCBot, anthropic-ai u.a. in die <code>robots.txt</code> ein.</div></div></label></div>';

        echo '<div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:20px 24px;margin-bottom:24px;">';
        echo '<div style="font-size:14px;font-weight:700;margin-bottom:6px;">Zusätzliche Informationen (optional)</div>';
        echo '<div style="font-size:12px;color:#888;margin-bottom:8px;">Eigener Text der am Ende der llms.txt eingefügt wird. Markdown ist erlaubt.</div>';
        echo '<textarea name="llms_custom" rows="4" style="width:100%;padding:9px 12px;border:1px solid #ddd;border-radius:6px;font-size:13px;font-family:monospace;">' . esc_textarea($custom) . '</textarea></div>';

        echo '<button type="submit" style="background:#f29400;color:#fff;border:none;padding:11px 28px;border-radius:7px;font-size:14px;font-weight:600;cursor:pointer;">Einstellungen speichern</button>';
        echo '</form>';

        echo '<div style="margin-top:24px;">';
        echo '<div style="font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#888;margin-bottom:8px;">Vorschau</div>';
        echo '<pre style="background:#1e1e1e;color:#d4d4d4;padding:20px;border-radius:8px;font-size:12px;line-height:1.7;overflow-x:auto;white-space:pre-wrap;">' . esc_html($preview) . '</pre>';
        echo '</div></div>';
    }

    public function generate_llms_content() {
        $site_name = get_bloginfo( 'name' );
        $site_desc = get_bloginfo( 'description' );
        $site_url  = home_url();
        $o         = $this->get_opts();
        $custom    = get_option( 'aije_llms_custom', '' );
        $lines     = array();

        $lines[] = '# ' . $site_name;
        if ( $site_desc ) { $lines[] = '> ' . $site_desc; }
        $lines[] = '';
        $lines[] = '## Website';
        $lines[] = '- URL: ' . $site_url;
        $lines[] = '- Sprache: ' . get_bloginfo('language');
        $lines[] = '';

        $admins = get_users( array( 'role' => 'administrator', 'number' => 1 ) );
        if ( $admins ) {
            $admin   = $admins[0];
            $job     = get_user_meta( $admin->ID, self::USER_META_JOB_TITLE, true );
            $bio     = get_user_meta( $admin->ID, self::USER_META_EXPERTISE, true );
            $same_as = get_user_meta( $admin->ID, self::USER_META_SAME_AS, true );
            $lines[] = '## Autor';
            $lines[] = '- Name: ' . $admin->display_name;
            if ( $job ) { $lines[] = '- Expertise: ' . $job; }
            if ( $bio  ) { $lines[] = '- Biografie: ' . wp_trim_words($bio, 25); }
            if ( $same_as ) {
                foreach ( preg_split("/
|
|
/", $same_as) as $link ) {
                    $link = trim($link);
                    if ( $link && substr($link,0,1) !== '#' ) { $lines[] = '- Profil: ' . $link; }
                }
            }
            $lines[] = '';
        }

        $posts = get_posts( array(
            'post_type'      => $o['enabled_post_types'],
            'posts_per_page' => 10,
            'post_status'    => 'publish',
            'orderby'        => 'date',
            'order'          => 'DESC',
        ) );
        if ( $posts ) {
            $lines[] = '## Aktuelle Inhalte';
            foreach ( $posts as $p ) {
                $lines[] = '- [' . get_the_title($p) . '](' . get_permalink($p) . ')';
            }
            $lines[] = '';
        }

        $lines[] = '## Nutzungshinweise';
        $lines[] = '- Zitate mit Quellenangabe erlaubt';
        $lines[] = '- Kommerzielle Nutzung ohne Genehmigung nicht gestattet';
        $lines[] = '- Generiert mit WP Rankify (https://wprankify.de)';

        if ( $custom ) { $lines[] = ''; $lines[] = $custom; }
        return implode( "
", $lines );
    }

    public function remove_category_base_rewrite() {
        $o = $this->get_opts();
        if ( empty($o['remove_category_base']) ) {
            // Wenn deaktiviert: category_link Filter entfernen
            return;
        }

        // Nur category_link Filter – KEINE Rewrite-Rules die REST API brechen
        // Die URL-Umschreibung passiert über .htaccess (wird beim Speichern generiert)
        add_filter( 'category_link', function( $link, $cat_id ) {
            return preg_replace( '#/category/#', '/', $link );
        }, 10, 2 );

        // request Filter: /slug/ → category_name=slug (für WordPress intern)
        add_filter( 'request', function( $query_vars ) {
            return $query_vars;
        });
    }

    /**
     * Schreibt .htaccess Regel für Category-Base-Entfernung
     * Wird beim Speichern der Einstellungen aufgerufen
     */
    public function update_htaccess_category_base( $enabled ) {
        $htaccess = ABSPATH . '.htaccess';
        if ( ! is_writable($htaccess) ) { return; }

        $content = file_get_contents($htaccess);
        $marker_start = '# BEGIN AIJE Category Base';
        $marker_end   = '# END AIJE Category Base';

        // Alten Block entfernen
        $content = preg_replace(
            '/' . preg_quote($marker_start, '/') . '.*?' . preg_quote($marker_end, '/') . '\s*/s',
            '',
            $content
        );

        if ( $enabled ) {
            $rule = $marker_start . "
"
                . "<IfModule mod_rewrite.c>
"
                . "RewriteEngine On
"
                . "RewriteCond %{REQUEST_URI} !^/wp-json/
"
                . "RewriteCond %{REQUEST_URI} !^/wp-admin/
"
                . "RewriteCond %{REQUEST_URI} !^/wp-content/
"
                . "RewriteCond %{REQUEST_URI} !^/wp-includes/
"
                . "RewriteRule ^(.+)/category/([^/]+)/?$ /$1/$2/ [R=301,L]
"
                . "</IfModule>
"
                . $marker_end . "
";
            // Vor dem WordPress Block einfügen
            $content = $rule . $content;
        }

        file_put_contents($htaccess, $content);
    }

    public function register_llms_rewrite() {
        add_rewrite_rule( '^llms\.txt$', 'index.php?aije_llms=1', 'top' );
        add_rewrite_tag( '%aije_llms%', '([0-9]+)' );
    }

    public function serve_llms_txt() {
        if ( ! get_query_var('aije_llms') ) { return; }
        if ( ! get_option('aije_llms_enabled', 1) ) { return; }
        nocache_headers();
        header( 'Content-Type: text/plain; charset=utf-8' );
        echo $this->generate_llms_content();
        exit;
    }

    public function append_llms_to_robots( $output, $public ) {
        if ( get_option('aije_llms_block_bots', 0) ) {
            $bots = array('GPTBot','CCBot','anthropic-ai','Claude-Web','Bytespider','FacebookBot','Applebot-Extended');
            foreach ( $bots as $bot ) {
                $output .= "
User-agent: " . $bot . "
Disallow: /
";
            }
        }
        if ( get_option('aije_llms_enabled', 1) ) {
            $output .= "
# LLMs
LLMs: " . home_url('/llms.txt') . "
";
        }
        return $output;
    }

        private function tab_license() {
        // Live-Status vom Proxy holen
        $pro_status = $this->get_pro_status();
        $tier       = $pro_status['tier']      ?? 'free';
        $is_pro     = ! empty($pro_status['is_pro']);
        $remaining  = $pro_status['remaining'] ?? 0;
        $sub_id     = $pro_status['subscription_id'] ?? '';
        $since      = $pro_status['since']     ?? '';

        $tier_colors = array('free'=>'#888','starter'=>'#22c55e','pro'=>'#f29400','agency'=>'#3b82f6');
        $tier_color  = $tier_colors[$tier] ?? '#888';
        $tier_names  = array('free'=>'Free','starter'=>'Starter','pro'=>'Pro','agency'=>'Agency');
        $tier_name   = $tier_names[$tier] ?? ucfirst($tier);

        echo '<h2>Lizenz & Abo-Status</h2>';
        echo '<div style="max-width:640px;">';

        // Status-Card
        echo '<div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:24px;margin-bottom:20px;">';
        echo '<div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;">';
        echo '<div>';
        echo '<div style="font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:#888;margin-bottom:4px;">Aktiver Plan</div>';
        echo '<div style="display:flex;align-items:center;gap:10px;">';
        echo '<span id="aije-license-tier-name" style="font-size:24px;font-weight:800;color:' . esc_attr($tier_color) . ';">' . esc_html($tier_name) . '</span>';
        if ( $is_pro ) {
            echo '<span id="aije-license-badge" style="background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:700;">✓ Aktiv</span>';
        } else {
            echo '<span id="aije-license-badge" style="background:#f9f9f9;color:#888;border:1px solid #e5e7eb;padding:3px 10px;border-radius:20px;font-size:11px;">Kostenlos</span>';
        }
        echo '</div>';
        echo '</div>';

        // Refresh-Button
        echo '<button type="button" id="aije-license-refresh"
            style="background:#f3f4f6;border:1px solid #e5e7eb;border-radius:6px;padding:8px 14px;font-size:12px;cursor:pointer;color:#555;">
            ↻ Status aktualisieren
        </button>';
        echo '</div>';

        // Details
        echo '<table style="width:100%;border-collapse:collapse;font-size:13px;">';
        $rows = array(
            array('Domain',          home_url()),
            array('KI-Analysen', $tier === 'agency'
                ? 'Unlimitiert'
                : ( $tier === 'pro'
                    ? (int)$remaining . ' verbleibend · 100/Monat'
                    : ( $tier === 'starter'
                        ? (int)$remaining . ' verbleibend · 50/Monat'
                        : (int)$remaining . ' verbleibend · 3/Monat (Free)' ) )
            ),
        );
        if ( $sub_id ) {
            $rows[] = array('Abo-ID', $sub_id);
        }
        if ( $since ) {
            $rows[] = array('Aktiv seit', date_i18n('d.m.Y', strtotime($since)));
        }
        foreach ( $rows as $idx => $row ) {
            echo '<tr style="border-top:1px solid #f3f4f6;">';
            echo '<td style="padding:8px 0;color:#888;width:140px;">' . esc_html($row[0]) . '</td>';
            $cell_id = $row[0] === 'KI-Analysen' ? ' id="aije-license-ki"' : '';
            echo '<td' . $cell_id . ' style="padding:8px 0;font-weight:500;color:#111;">' . esc_html($row[1]) . '</td>';
            echo '</tr>';
        }
        echo '</table>';
        echo '</div>';

        // Upgrade-Box wenn Free
        if ( ! $is_pro ) {
            echo '<div style="background:linear-gradient(135deg,#fff8f0,#fff3e0);border:1px solid #f29400;border-radius:10px;padding:20px 24px;margin-bottom:20px;">';
            echo '<div style="font-size:15px;font-weight:700;margin-bottom:8px;">🚀 Auf Pro upgraden</div>';
            echo '<p style="font-size:13px;color:#555;margin-bottom:16px;">Mehr KI-Analysen pro Monat. Jederzeit kündbar.</p>';
            echo '<div style="display:flex;gap:10px;flex-wrap:wrap;">';
            echo '<a href="https://wprankify.de/#pricing" target="_blank"
                style="background:#f29400;color:#fff;padding:10px 20px;border-radius:7px;font-weight:700;font-size:13px;text-decoration:none;">
                Starter – 2,99€/Monat →</a>';
            echo '<a href="https://wprankify.de/#pricing" target="_blank"
                style="background:#111;color:#fff;padding:10px 20px;border-radius:7px;font-weight:700;font-size:13px;text-decoration:none;">
                Pro – 4,99€/Monat →</a>';
            echo '</div></div>';
        }

        // Aktivierungs-Box
        echo '<div style="background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:20px 24px;">';
        echo '<div style="font-size:13px;font-weight:600;margin-bottom:10px;">Abo bereits gebucht?</div>';
        echo '<p style="font-size:12px;color:#888;margin-bottom:10px;">Trage deine PayPal Subscription-ID ein. Du findest sie in der Bestätigungsmail von PayPal (Format: I-XXXXXXXXXXXX).</p>';
        echo '<div style="display:flex;gap:8px;flex-wrap:wrap;">';
        echo '<input type="text" id="aije-sub-id" placeholder="I-XXXXXXXXXXXX"
            style="flex:1;min-width:200px;padding:9px 12px;border:1px solid #ddd;border-radius:6px;font-size:13px;font-family:monospace;" />';
        echo '<button type="button" id="aije-activate-btn"
            style="background:#111;color:#fff;border:none;padding:9px 18px;border-radius:6px;font-size:13px;font-weight:600;cursor:pointer;">
            Aktivieren →</button>';
        echo '</div>';
        echo '<div id="aije-activate-result" style="margin-top:10px;font-size:12px;"></div>';
        echo '</div>';

        echo '</div>';

        // JS: Refresh-Button
        $nonce = wp_create_nonce('aije_topic_nonce');
        ?>
<script>
document.addEventListener('DOMContentLoaded', function(){
    // Aktivierungs-Button
    var activateBtn = document.getElementById('aije-activate-btn');
    var activateResult = document.getElementById('aije-activate-result');
    if (activateBtn) {
        activateBtn.addEventListener('click', function(){
            var subId = document.getElementById('aije-sub-id').value.trim();
            if (!subId || !subId.match(/^I-[A-Z0-9]+$/i)) {
                activateResult.innerHTML = '<span style="color:#ef4444;">Bitte gib eine gültige Subscription-ID ein (Format: I-XXXXXXXXXXXX)</span>';
                return;
            }
            activateBtn.disabled = true;
            activateBtn.textContent = 'Wird aktiviert…';
            activateResult.innerHTML = '';
            fetch('https://www.muench-media.com/aije-proxy/activate.php', {
                method: 'POST',
                headers: {'Content-Type': 'application/x-www-form-urlencoded'},
                body: 'subscription_id=' + encodeURIComponent(subId) + '&domain=' + encodeURIComponent('<?= esc_js(home_url()) ?>')
            })
            .then(function(r){ return r.text(); })
            .then(function(html){
                activateBtn.disabled = false;
                activateBtn.textContent = 'Aktivieren →';
                if (html.indexOf('aktiviert') !== -1 || html.indexOf('success') !== -1 || html.indexOf('Pro') !== -1) {
                    activateResult.innerHTML = '<span style="color:#15803d;font-weight:600;">✓ Aktivierung erfolgreich! Status wird aktualisiert…</span>';
                    // Cache löschen und Status neu laden
                    setTimeout(function(){
                        var fd = new FormData();
                        fd.append('action','aije_check_status');
                        fd.append('nonce','<?= esc_js($nonce) ?>');
                        fetch(ajaxurl,{method:'POST',body:fd,credentials:'same-origin'})
                        .then(function(r){return r.json();})
                        .then(function(d){ if(d.success){ location.reload(); } });
                    }, 1500);
                } else {
                    activateResult.innerHTML = '<span style="color:#ef4444;">Aktivierung fehlgeschlagen. Bitte prüfe die Subscription-ID.</span>';
                }
            })
            .catch(function(){
                activateBtn.disabled = false;
                activateBtn.textContent = 'Aktivieren →';
                activateResult.innerHTML = '<span style="color:#ef4444;">Verbindungsfehler. Bitte erneut versuchen.</span>';
            });
        });
    }

    var btn = document.getElementById('aije-license-refresh');
    if (!btn) return;
    btn.addEventListener('click', function(){
        btn.textContent = '…';
        btn.disabled = true;
        var fd = new FormData();
        fd.append('action','aije_check_status');
        fd.append('nonce','<?= esc_js($nonce) ?>');
        fetch(ajaxurl,{method:'POST',body:fd,credentials:'same-origin'})
        .then(function(r){return r.json();})
        .then(function(d){
            btn.textContent = '↻ Status aktualisieren';
            btn.disabled = false;
            if (d.success && d.data) {
                var data = d.data;
                var tier = data.tier || 'free';
                var used = data.used || 0;
                var remaining = data.remaining || 0;
                var limit = data.limit || 0;
                var colors = {free:'#888',starter:'#22c55e',pro:'#f29400',agency:'#3b82f6'};
                var names  = {free:'Free',starter:'Starter',pro:'Pro',agency:'Agency'};
                var c = colors[tier] || '#888';
                // Tier-Name aktualisieren
                var tierEl = document.querySelector('[id="aije-license-tier-name"]');
                if (tierEl) { tierEl.textContent = names[tier] || tier; tierEl.style.color = c; }
                // KI-Analysen aktualisieren
                var kiEl = document.querySelector('[id="aije-license-ki"]');
                if (kiEl) { kiEl.textContent = used + ' verwendet · ' + remaining + ' verbleibend · ' + limit + '/Monat'; }
                // Aktiv-Badge
                var badgeEl = document.querySelector('[id="aije-license-badge"]');
                if (badgeEl) { badgeEl.textContent = tier !== 'free' ? '✓ Aktiv' : 'Kostenlos'; }
                // Fallback: Seite neu laden
                location.reload();
            } else {
                btn.textContent = '✗ Fehler – nochmal versuchen';
            }
        })
        .catch(function(){
            btn.textContent = '↻ Status aktualisieren';
            btn.disabled = false;
        });
    });
});
</script>
        <?php
    }

    public static function validate_license_remote( $license_key ) {
        if ( empty( $license_key ) ) {
            return array( 'valid' => false, 'error' => 'Kein Lizenzcode angegeben.' );
        }
        $home   = function_exists( 'home_url' ) ? home_url() : '';
        $parsed = $home ? parse_url( $home ) : array();
        $host   = strtolower( $parsed['host'] ?? '' );
        if ( strpos( $host, 'www.' ) === 0 ) { $host = substr( $host, 4 ); }

        $response = wp_remote_post(
            'https://www.muench-media.com/aije-license/validate',
            array(
                'timeout' => 10,
                'headers' => array( 'Content-Type' => 'application/json' ),
                'body'    => wp_json_encode( array( 'license_key' => $license_key, 'domain' => $host ) ),
            )
        );
        if ( is_wp_error( $response ) ) {
            return array( 'valid' => false, 'error' => 'Server nicht erreichbar: ' . $response->get_error_message() );
        }
        $body = json_decode( wp_remote_retrieve_body( $response ), true );
        return is_array( $body ) ? $body : array( 'valid' => false, 'error' => 'Ungültige Server-Antwort.' );
    }


    /* ===== Metaboxes ===== */

    public function add_toggle_metabox() {
        $types = $this->get_opts()['enabled_post_types'];
        foreach ($types as $t) {
            add_meta_box(
                'aije_toggle',
                esc_html__('AI JSON – Ausgabe', 'ai-json-extractor-auto-embed-lite'),
                array($this, 'render_toggle_metabox'),
                $t, 'side', 'default'
            );
        }
    }

    public function render_toggle_metabox($post) {
        $no = get_post_meta($post->ID, self::META_NO_EMBED, true);
        wp_nonce_field('aije_toggle', 'aije_toggle_nonce');
        echo '<label><input type="checkbox" name="aije_no_embed" value="1" ' . checked($no, true, false) . ' /> ';
        echo esc_html__('Ausgabe für diesen Beitrag deaktivieren', 'ai-json-extractor-auto-embed-lite') . '</label>';
        echo '<p class="description" style="margin-top:6px;">Deaktiviert sowohl JSON-Embed als auch Person-Schema für diesen Beitrag.</p>';
    }

    public function save_post_meta($post_id) {
        if (!isset($_POST['aije_toggle_nonce']) || !wp_verify_nonce(wp_unslash($_POST['aije_toggle_nonce']), 'aije_toggle')) {
            return;
        }
        if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) { return; }
        if (!current_user_can('edit_post', $post_id)) { return; }
        $no = !empty($_POST['aije_no_embed']) ? '1' : '';
        if ($no) {
            update_post_meta($post_id, self::META_NO_EMBED, '1');
        } else {
            delete_post_meta($post_id, self::META_NO_EMBED);
        }
    }

    public function add_preview_metabox() {
        $types = $this->get_opts()['enabled_post_types'];
        foreach ($types as $t) {
            add_meta_box(
                'aije_preview',
                esc_html__('AI JSON – Vorschau (readonly)', 'ai-json-extractor-auto-embed-lite'),
                array('AIJE_Lite_100', 'render_preview_metabox_cb'),
                $t, 'side', 'default'
            );
        }
    }

    public static function render_preview_metabox_cb($post) {
        $self = new self();
        $data = $self->extract_payload($post);

        $flags = 0;
        if (defined('JSON_UNESCAPED_UNICODE')) { $flags |= JSON_UNESCAPED_UNICODE; }
        if (defined('JSON_UNESCAPED_SLASHES')) { $flags |= JSON_UNESCAPED_SLASHES; }
        if (defined('JSON_PRETTY_PRINT'))      { $flags |= JSON_PRETTY_PRINT; }

        $json = function_exists('wp_json_encode') ? wp_json_encode($data, $flags) : json_encode($data);
        echo '<textarea readonly style="width:100%;height:260px;font-family:monospace;background:#f7f7f7;border:1px solid #ddd;">' . esc_textarea($json) . '</textarea>';

        $pto  = get_post_type_object($post->post_type);
        $base = (!empty($pto->rest_base)) ? $pto->rest_base : $post->post_type;
        $api_url = rest_url('wp/v2/' . $base . '/' . $post->ID);

        if (!empty($api_url)) {
            $is_published = ($post->post_status === 'publish');
            $url_out      = $is_published ? $api_url : add_query_arg('context', 'edit', $api_url);
            echo '<p style="margin-top:8px;">';
            echo '<a href="' . esc_url($url_out) . '" target="_blank" class="button button-secondary">REST API öffnen</a>';
            if (!$is_published) {
                echo '<br><small style="color:#666;">Hinweis: Beitrag ist nicht veröffentlicht. Login erforderlich.</small>';
            }
            echo '</p>';
        }
    }

    /* ===== Frontend Auto-Embed (JSON-Blob) ===== */

    public function auto_embed() {
        if (!function_exists('is_singular') || !is_singular()) { return; }
        global $post;
        if (empty($post) || !is_object($post)) { return; }

        $o = $this->get_opts();
        if (!in_array($post->post_type, $o['enabled_post_types'], true)) { return; }
        if (get_post_meta($post->ID, self::META_NO_EMBED, true)) { return; }

        $data  = $this->extract_payload($post);
        $flags = 0;
        if (defined('JSON_UNESCAPED_UNICODE')) { $flags |= JSON_UNESCAPED_UNICODE; }
        if (defined('JSON_UNESCAPED_SLASHES')) { $flags |= JSON_UNESCAPED_SLASHES; }
        if (empty($o['minify']) && defined('JSON_PRETTY_PRINT')) { $flags |= JSON_PRETTY_PRINT; }

        $json = function_exists('wp_json_encode') ? wp_json_encode($data, $flags) : json_encode($data);

        echo "\n<!-- AI Auto Embed: auto-embed start -->\n";
        echo '<script type="application/json" id="ai-json-extractor" data-post-id="' . esc_attr((string) $post->ID) . '">' . $json . '</script>' . "\n";
        if (!empty($o['enable_schema'])) {
            echo '<script type="application/ld+json" id="ai-json-extractor-schema">' . $this->schema_article($post) . '</script>' . "\n";
        }
        echo "<!-- AI AUTO EMBED: auto-embed end -->\n";
    }

    private function extract_payload($post) {
        $o       = $this->get_opts();
        $u       = get_userdata($post->post_author);
        $acf     = array();
        $content = apply_filters('the_content', $post->post_content);
        $text    = wp_strip_all_tags($content);
        $lines   = preg_split("/\r\n|\n|\r/", $text);
        $paragraphs = array();
        foreach ($lines as $line) {
            $line = trim(preg_replace('/\s+/u', ' ', $line));
            if ($line !== '') { $paragraphs[] = $line; }
        }

        $links = array();
        if (preg_match_all('/<a[^>]+href=[\'\"]?([^\'\" >]+)[\'\"]?[^>]*>(.*?)<\/a>/i', $content, $m, PREG_SET_ORDER)) {
            foreach ($m as $a) {
                $href = trim($a[1]);
                $txt  = trim(wp_strip_all_tags($a[2]));
                if ($href !== '') {
                    $links[] = array('text' => $txt, 'href' => $href);
                }
            }
        }

        if (!empty($o['acf_include']) && function_exists('get_fields')) {
            $acf_fields = get_fields($post->ID);
            if (is_array($acf_fields) && !empty($acf_fields)) {
                $acf = $acf_fields;
            }
        }

        $data = array(
            'title'      => get_the_title($post),
            'author'     => $u ? $u->display_name : null,
            'date'       => get_post_time('Y-m-d', true, $post),
            'paragraphs' => $paragraphs,
            'links'      => $links,
            'meta'       => array(
                'post_id' => (int) $post->ID,
                'site'    => get_bloginfo('name'),
                'url'     => get_permalink($post),
                'lang'    => get_bloginfo('language'),
            ),
        );

        // ---- NEU: Experten-Profil-Daten im JSON-Blob mitliefern ----
        $expert = $this->get_author_expert_data($post->post_author);
        if (!empty($expert)) {
            $data['author_expert'] = $expert;
        }

        if (!empty($acf)) {
            $data['acf'] = $acf;
        }

        return $data;
    }

    private function schema_article($post) {
        $site     = get_bloginfo('name');
        $url      = get_permalink($post);
        $headline = get_the_title($post);
        $u        = get_userdata($post->post_author);

        $obj = array(
            '@context'  => 'https://schema.org',
            '@type'     => 'Article',
            'url'       => $url,
            'headline'  => wp_strip_all_tags($headline),
            'publisher' => array('@type' => 'Organization', 'name' => $site),
        );
        if ($u && $u->display_name) {
            $obj['author'] = array('@type' => 'Person', 'name' => $u->display_name);
        }

        $flags = 0;
        if (defined('JSON_UNESCAPED_UNICODE')) { $flags |= JSON_UNESCAPED_UNICODE; }
        if (defined('JSON_UNESCAPED_SLASHES')) { $flags |= JSON_UNESCAPED_SLASHES; }

        return function_exists('wp_json_encode') ? wp_json_encode($obj, $flags) : json_encode($obj);
    }

    /* ===== Export ===== */

    private function ensure_dir() {
        $u = wp_upload_dir();
        if (empty($u['basedir'])) { return false; }
        $dir = trailingslashit($u['basedir']) . self::EXPORT_DIR;
        if (!file_exists($dir)) { wp_mkdir_p($dir); }
        return (is_dir($dir) && is_writable($dir)) ? $dir : false;
    }

    private function build_query($a) {
        $q = array(
            'post_type'      => !empty($a['post_types']) ? $a['post_types'] : array('post'),
            'posts_per_page' => -1,
            'post_status'    => 'publish',
        );
        if (!empty($a['s']))         { $q['s']      = $a['s']; }
        if (!empty($a['author']))    { $q['author'] = (int) $a['author']; }
        if (!empty($a['cat']))       { $q['cat']    = (int) $a['cat']; }
        $date_query = array();
        if (!empty($a['date_from'])) { $date_query[] = array('after' => $a['date_from']); }
        if (!empty($a['date_to']))   { $date_query[] = array('before' => $a['date_to']); }
        if ($date_query)             { $q['date_query'] = $date_query; }
        return $q;
    }

    private function run_export($args) {
        $dir = $this->ensure_dir();
        if (!$dir) { return array('ok' => false, 'file' => '', 'count' => 0, 'size_kb' => 0); }

        $q     = new WP_Query($this->build_query($args));
        $flags = 0;
        if (defined('JSON_UNESCAPED_UNICODE')) { $flags |= JSON_UNESCAPED_UNICODE; }
        if (defined('JSON_UNESCAPED_SLASHES')) { $flags |= JSON_UNESCAPED_SLASHES; }
        if (empty($args['minify']) && defined('JSON_PRETTY_PRINT')) { $flags |= JSON_PRETTY_PRINT; }

        $count = 0;
        $files = array();
        if ($q->have_posts()) {
            while ($q->have_posts()) {
                $q->the_post();
                $p       = get_post();
                $payload = $this->extract_payload($p);
                if (empty($args['include_acf'])) { unset($payload['acf']); }
                $json = function_exists('wp_json_encode') ? wp_json_encode($payload, $flags) : json_encode($payload);
                $fn   = 'post-' . $p->ID . '.json';
                file_put_contents(trailingslashit($dir) . $fn, $json);
                $files[] = $fn;
                $count++;
            }
            wp_reset_postdata();
        }

        $file_out = '';
        $size_kb  = 0;
        $stamp    = date_i18n('Ymd-His');

        if (!empty($args['zip']) && class_exists('ZipArchive')) {
            $zipname  = 'ai-json-export-' . $stamp . '.zip';
            $zip      = new ZipArchive();
            $zip_path = trailingslashit($dir) . $zipname;
            if (true === $zip->open($zip_path, ZipArchive::CREATE | ZipArchive::OVERWRITE)) {
                $size_total = 0;
                foreach ($files as $fn) {
                    $path = trailingslashit($dir) . $fn;
                    if (file_exists($path)) { $zip->addFile($path, $fn); $size_total += filesize($path); }
                }
                $zip->close();
                $this->log_export($zipname, $count, round($size_total / 1024, 1), $args);
                $file_out = $zipname;
                $size_kb  = round($size_total / 1024, 1);
            }
        } else {
            $outname = 'ai-json-export-' . $stamp . '.json';
            $bundle  = array();
            foreach ($files as $fn) {
                $p = trailingslashit($dir) . $fn;
                if (file_exists($p)) { $bundle[] = json_decode(file_get_contents($p), true); }
            }
            $json_bundle = function_exists('wp_json_encode')
                ? wp_json_encode($bundle, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES)
                : json_encode($bundle);
            file_put_contents(trailingslashit($dir) . $outname, $json_bundle);
            $this->log_export($outname, $count, round(strlen($json_bundle) / 1024, 1), $args);
            $file_out = $outname;
            $size_kb  = round(strlen($json_bundle) / 1024, 1);
        }

        return array('ok' => true, 'file' => $file_out, 'count' => $count, 'size_kb' => $size_kb);
    }

    private function log_export($filename, $count, $size_kb, $args) {
        $u   = wp_upload_dir();
        $dir = trailingslashit($u['basedir']) . self::EXPORT_DIR;
        $log = trailingslashit($dir) . self::LOG_FILE;
        if (!file_exists($dir)) { wp_mkdir_p($dir); }

        $filters = sprintf(
            'types:%s | author:%s | cat:%s | date:%s..%s | search:%s | acf:%s | min:%s | zip:%s',
            implode(',', (array) $args['post_types']),
            !empty($args['author']) ? (int) $args['author'] : '-',
            !empty($args['cat'])    ? (int) $args['cat']    : '-',
            !empty($args['date_from']) ? $args['date_from'] : '-',
            !empty($args['date_to'])   ? $args['date_to']   : '-',
            !empty($args['s'])         ? $args['s']         : '-',
            !empty($args['include_acf']) ? '1' : '0',
            !empty($args['minify'])      ? '1' : '0',
            !empty($args['zip'])         ? '1' : '0'
        );

        $fh = fopen($log, file_exists($log) ? 'a' : 'w');
        if ($fh) {
            fputcsv($fh, array(date_i18n('c'), $filename, $count, $size_kb, $filters));
            fclose($fh);
        }
    }

    public function handle_export() {
        if (!current_user_can('manage_options')) { wp_die(esc_html__('No permission.', 'ai-json-extractor-auto-embed-lite')); }
        check_admin_referer('aije_export');
        $a = array(
            'post_types'  => isset($_POST['post_types']) ? array_map('sanitize_key', (array) $_POST['post_types']) : array('post', 'page'),
            'author'      => isset($_POST['author']) ? (int) $_POST['author'] : 0,
            'cat'         => isset($_POST['cat'])    ? (int) $_POST['cat']    : 0,
            'date_from'   => isset($_POST['date_from']) ? sanitize_text_field(wp_unslash($_POST['date_from'])) : '',
            'date_to'     => isset($_POST['date_to'])   ? sanitize_text_field(wp_unslash($_POST['date_to']))   : '',
            's'           => isset($_POST['s'])          ? sanitize_text_field(wp_unslash($_POST['s']))          : '',
            'include_acf' => !empty($_POST['include_acf']) ? 1 : 0,
            'minify'      => !empty($_POST['minify'])      ? 1 : 0,
            'zip'         => !empty($_POST['zip'])         ? 1 : 0,
        );
        update_option(self::LAST_ARGS_OPT, $a, false);
        $res = $this->run_export($a);
        wp_safe_redirect(add_query_arg(array(
            'page' => 'aije-lite', 'tab' => 'export',
            'export_done' => $res['ok'] ? 1 : 0,
            'file'        => $res['file'],
            'count'       => $res['count'],
            'size_kb'     => $res['size_kb'],
        ), admin_url('tools.php')));
        exit;
    }

    public function ajax_ai_analyze() {
        check_ajax_referer('aije_ai_nonce', 'nonce');
        if (!current_user_can('edit_posts')) { wp_send_json_error(); }
        $post_id = intval($_POST['post_id']);
        $post    = get_post($post_id);
        if (!$post) { wp_send_json_error(); }
        $o       = $this->get_opts();
        $api_key = isset($o['openai_api_key']) ? $o['openai_api_key'] : '';
        if (!$api_key) { wp_send_json_error(array('html' => '<p>Kein API Key hinterlegt.</p>')); }
        $content = wp_strip_all_tags($post->post_content);
        $result  = $this->call_openai($content, $api_key);
        update_post_meta($post_id, '_aije_ai_analysis', $result);
        wp_send_json_success(array('html' => $this->render_ai_analysis($result)));
    }

    /* ===== Cron ===== */

    public function add_schedules($s) {
        $s['aije_daily']  = array('interval' => DAY_IN_SECONDS,  'display' => 'AI JSON – täglich');
        $s['aije_weekly'] = array('interval' => WEEK_IN_SECONDS, 'display' => 'AI JSON – wöchentlich');
        $s['aije_15min']  = array('interval' => 900,             'display' => 'AI JSON – alle 15 Minuten');
        return $s;
    }

    private function maybe_reschedule_export($enabled, $freq) {
        $t = wp_next_scheduled(self::CRON_EXPORT);
        if ($enabled) {
            if ($t) { wp_unschedule_event($t, self::CRON_EXPORT); }
            $key       = ($freq === 'weekly') ? 'aije_weekly' : 'aije_daily';
            $schedules = wp_get_schedules();
            if (!isset($schedules[$key])) { $key = 'daily'; }
            wp_schedule_event(time() + 300, $key, self::CRON_EXPORT);
        } elseif ($t) {
            wp_unschedule_event($t, self::CRON_EXPORT);
        }
    }

    public function handle_run_cron_now() {
        if (!current_user_can('manage_options')) { wp_die(esc_html__('No permission.', 'ai-json-extractor-auto-embed-lite')); }
        check_admin_referer('aije_export');
        $a = get_option(self::LAST_ARGS_OPT, array(
            'post_types' => array('post', 'page'), 'author' => 0, 'cat' => 0,
            'date_from' => '', 'date_to' => '', 's' => '',
            'include_acf' => 1, 'minify' => 0, 'zip' => 1,
        ));
        $this->run_export($a);
        wp_safe_redirect(add_query_arg(array('page' => 'aije-lite', 'tab' => 'automation', 'ran' => 1), admin_url('tools.php')));
        exit;
    }

    public function handle_clear_cron() {
        if (!current_user_can('manage_options')) { wp_die(esc_html__('No permission.', 'ai-json-extractor-auto-embed-lite')); }
        check_admin_referer('aije_export');
        $t = wp_next_scheduled(self::CRON_EXPORT);
        if ($t) { wp_unschedule_event($t, self::CRON_EXPORT); }
        wp_safe_redirect(add_query_arg(array('page' => 'aije-lite', 'tab' => 'automation', 'cleared' => 1), admin_url('tools.php')));
        exit;
    }

    public function cron_export_runner() {
        $o = $this->get_opts();
        if (empty($o['cron_enabled'])) { return; }
        $a = get_option(self::LAST_ARGS_OPT, array(
            'post_types' => array('post', 'page'), 'author' => 0, 'cat' => 0,
            'date_from' => '', 'date_to' => '', 's' => '',
            'include_acf' => 1, 'minify' => 0, 'zip' => 1,
        ));
        $this->run_export($a);
    }

    /* ===== PingHub ===== */


    /* ===== Telemetrie-Einwilligung ===== */

    /**
     * Zeigt eine einmalige Admin-Notice mit Opt-out-Möglichkeit.
     * Wird ausgeblendet sobald der Nutzer eine Entscheidung getroffen hat.
     */
    public function stats_consent_notice() {

        // Bereits entschieden?
        if ( get_option( 'aije_stats_notice_dismissed' ) ) { return; }
        // Nur für Admins
        if ( ! current_user_can( 'manage_options' ) ) { return; }

        $is_optout  = (bool) get_option( self::OPT_STATS_OPTOUT );
        $optout_url = wp_nonce_url( admin_url( 'admin-post.php?action=aije_stats_optout' ), 'aije_stats_optout' );
        $optin_url  = wp_nonce_url( admin_url( 'admin-post.php?action=aije_stats_optin' ),  'aije_stats_optin'  );

        echo '<div class="notice notice-info" style="padding:14px 16px;display:flex;align-items:flex-start;gap:16px;flex-wrap:wrap;">';
        echo '<div style="flex:1;min-width:280px;">';
        echo '<strong>AI Auto Embed – Anonyme Nutzungsstatistiken</strong><br>';
        echo '<span style="font-size:13px;color:#555;line-height:1.6;">';
        echo 'Das Plugin sendet anonyme Daten an den Entwickler: Site-URL, PHP-Version und aggregierte Score-Durchschnitte (keine Inhalte, keine E-Mails, keine personenbezogenen Daten). ';
        echo 'Das hilft dabei, das Plugin zu verbessern. Du kannst das jederzeit deaktivieren.';
        echo '</span>';
        echo '</div>';
        echo '<div style="display:flex;gap:8px;align-items:center;flex-shrink:0;padding-top:2px;">';

        if ( $is_optout ) {
            echo '<span style="color:#888;font-size:12px;">Statistiken deaktiviert.</span> ';
            echo '<a href="' . esc_url( $optin_url ) . '" class="button button-small">Wieder aktivieren</a>';
        } else {
            echo '<a href="' . esc_url( $optout_url ) . '" class="button button-small">Deaktivieren</a>';
            echo '<a href="' . esc_url( $optin_url ) . '" class="button button-primary button-small">OK, verstanden</a>';
        }

        echo '</div>';
        echo '</div>';
    }

    /**
     * Handler: Nutzer deaktiviert Telemetrie.
     */
    public function handle_stats_optout() {
        check_admin_referer( 'aije_stats_optout' );
        if ( ! current_user_can( 'manage_options' ) ) { wp_die(); }
        update_option( self::OPT_STATS_OPTOUT, 1, false );
        update_option( 'aije_stats_notice_dismissed', 1, false );
        wp_safe_redirect( add_query_arg( 'aije_stats', 'optout', wp_get_referer() ?: admin_url() ) );
        exit;
    }

    /**
     * Handler: Nutzer akzeptiert / reaktiviert Telemetrie.
     */
    public function handle_stats_optin() {
        check_admin_referer( 'aije_stats_optin' );
        if ( ! current_user_can( 'manage_options' ) ) { wp_die(); }
        delete_option( self::OPT_STATS_OPTOUT );
        update_option( 'aije_stats_notice_dismissed', 1, false );
        wp_safe_redirect( add_query_arg( 'aije_stats', 'optin', wp_get_referer() ?: admin_url() ) );
        exit;
    }

    /* ===== Stats: Heartbeat & Score-Reporting ===== */

    /**
     * Stellt sicher dass der wöchentliche Heartbeat-Cron läuft.
     */
    private function ensure_heartbeat_cron() {
        $scheduled = wp_next_scheduled( self::CRON_HEARTBEAT );
        // Auf täglich umstellen falls noch wöchentlich
        if ( $scheduled ) {
            $schedule = wp_get_schedule( self::CRON_HEARTBEAT );
            if ( $schedule === 'aije_weekly' ) {
                wp_unschedule_event( $scheduled, self::CRON_HEARTBEAT );
                $scheduled = false;
            }
        }
        if ( ! $scheduled ) {
            wp_schedule_event( time() + 300, 'aije_daily', self::CRON_HEARTBEAT );
        }
    }

    /**
     * Wöchentlicher Heartbeat: sendet anonyme Installations-Daten.
     */

    /**
     * Berechnet einen installations-spezifischen Secret-Hash.
     * Salt + Site-URL → SHA-256. Kein fixer Secret im Code.
     */
    public static function stats_secret() {
        return hash( 'sha256', home_url() . self::STATS_SALT );
    }

    public function cron_heartbeat_runner() {
        // Opt-out prüfen: Nutzer hat Telemetrie deaktiviert
        if ( get_option( self::OPT_STATS_OPTOUT ) ) { return; }

        global $wp_version;
        $o = $this->get_opts();

        // Beitrags-Anzahl zählen
        $post_count = 0;
        foreach ( $o['enabled_post_types'] as $pt ) {
            $count = wp_count_posts( $pt );
            $post_count += (int) ( $count->publish ?? 0 );
        }

        $payload = array(
            'secret'         => self::stats_secret(),
            'site_url'       => home_url(),
            'site_name'      => get_bloginfo( 'name' ),
            'wp_version'     => $wp_version ?? '',
            'php_version'    => PHP_VERSION,
            'plugin_version' => AIJE_PLUGIN_VERSION,
            'post_count'     => $post_count,
        );

        wp_remote_post( self::STATS_ENDPOINT . 'heartbeat', array(
            'timeout'   => 8,
            'headers'   => array( 'Content-Type' => 'application/json' ),
            'body'      => wp_json_encode( $payload ),
            'blocking'  => false, // Nicht auf Antwort warten
            'sslverify' => true,
        ) );

        // Zeitstempel des letzten Heartbeats speichern
        update_option( 'aije_last_heartbeat', time(), false );

        // Direkt danach Score-Statistiken senden
        $this->send_score_stats();
    }

    /**
     * Sendet anonyme Score-Statistiken.
     * Kein Inhalt, keine URLs – nur aggregierte Zahlen.
     */
    private function send_score_stats() {
        $o     = $this->get_opts();
        $types = $o['enabled_post_types'];

        $query = new WP_Query( array(
            'post_type'      => $types,
            'posts_per_page' => -1,
            'post_status'    => 'publish',
            'no_found_rows'  => true,
        ) );

        if ( ! $query->have_posts() ) { return; }

        $scores     = array();
        $cat_totals = array( 'content' => 0, 'eeat' => 0, 'technical' => 0, 'linking' => 0 );
        $issue_freq = array();
        $count      = 0;

        while ( $query->have_posts() ) {
            $query->the_post();
            $analysis = $this->calculate_ai_analysis( get_post() );
            $scores[] = $analysis['score'];
            foreach ( $cat_totals as $k => $_ ) {
                $cat_totals[ $k ] += $analysis['categories'][ $k ]['score'] ?? 0;
            }
            // Häufigste Issues zählen (nur Message, kein Inhalt)
            foreach ( array_slice( $analysis['issues'], 0, 3 ) as $issue ) {
                $key = $issue['msg'] ?? '';
                $issue_freq[ $key ] = ( $issue_freq[ $key ] ?? 0 ) + 1;
            }
            $count++;
        }
        wp_reset_postdata();

        if ( $count === 0 ) { return; }

        arsort( $issue_freq );
        $avg_score = round( array_sum( $scores ) / $count );
        $cat_avgs  = array();
        foreach ( $cat_totals as $k => $total ) {
            $cat_avgs[ $k ] = round( $total / $count );
        }

        $payload = array(
            'secret'         => self::stats_secret(),
            'site_url'       => home_url(),
            'plugin_version' => AIJE_PLUGIN_VERSION,
            'preset'         => $o['score_preset'] ?? 'standard',
            'avg_score'      => $avg_score,
            'scores'         => $cat_avgs,
            'top_issues'     => array_keys( array_slice( $issue_freq, 0, 5, true ) ),
            'post_count'     => $count,
        );

        wp_remote_post( self::STATS_ENDPOINT . 'score', array(
            'timeout'   => 8,
            'headers'   => array( 'Content-Type' => 'application/json' ),
            'body'      => wp_json_encode( $payload ),
            'blocking'  => false,
            'sslverify' => true,
        ) );
    }

    private function ensure_ping_cron() {
        $t = wp_next_scheduled(self::CRON_PING);
        if (!$t) { wp_schedule_event(time() + 600, 'aije_15min', self::CRON_PING); }
    }

    public function handle_test_ping() {
        if (!current_user_can('manage_options')) { wp_die(esc_html__('No permission.', 'ai-json-extractor-auto-embed-lite')); }
        check_admin_referer('aije_export');
        $post_id = isset($_POST['post_id']) ? (int) $_POST['post_id'] : 0;
        $event   = isset($_POST['event'])   ? sanitize_key($_POST['event']) : 'update';
        if ($post_id > 0) { $this->dispatch_ping($event, $post_id); }
        wp_safe_redirect(add_query_arg(array('page' => 'aije-lite', 'tab' => 'pinghub', 'test' => 1), admin_url('tools.php')));
        exit;
    }

    public function handle_flush_queue() {
        if (!current_user_can('manage_options')) { wp_die(esc_html__('No permission.', 'ai-json-extractor-auto-embed-lite')); }
        check_admin_referer('aije_export');
        $this->cron_ping_runner();
        wp_safe_redirect(add_query_arg(array('page' => 'aije-lite', 'tab' => 'pinghub', 'flushed' => 1), admin_url('tools.php')));
        exit;
    }

    public function on_transition_status($new, $old, $post) {
        $o = $this->get_opts();
        if (empty($o['ping_enabled'])) { return; }
        if (!in_array($post->post_type, $o['enabled_post_types'], true)) { return; }
        if ($new === 'publish' && $old !== 'publish' && in_array('publish', $o['ping_events'], true)) {
            $this->dispatch_ping('publish', $post->ID);
        }
    }

    public function on_post_updated($post_ID, $after, $before) {
        $o = $this->get_opts();
        if (empty($o['ping_enabled'])) { return; }
        if (!in_array($after->post_type, $o['enabled_post_types'], true)) { return; }
        if ($after->post_status !== 'publish') { return; }
        if (in_array('update', $o['ping_events'], true)) { $this->dispatch_ping('update', $post_ID); }
    }

    private function push_ping_error($url, $event, $post_id, $msg) {
        $errs = get_option(self::PING_ERRORS_OPT, array());
        if (!is_array($errs)) { $errs = array(); }
        $errs[] = array('time' => date_i18n('Y-m-d H:i:s'), 'url' => $url, 'event' => $event, 'post_id' => $post_id, 'error' => $msg);
        if (count($errs) > 200) { $errs = array_slice($errs, -200); }
        update_option(self::PING_ERRORS_OPT, $errs, false);
    }

    private function dispatch_ping($event, $post_id) {
        $o    = $this->get_opts();
        $urls = preg_split("/\r\n|\n|\r/", trim($o['ping_urls']));
        $urls = array_filter(array_map('trim', $urls));
        if (empty($urls)) { return; }

        $post_obj = get_post($post_id);
        if (!$post_obj) { return; }

        $payload = array(
            'event' => $event,
            'site'  => get_bloginfo('name'),
            'time'  => time(),
            'post'  => $this->extract_payload($post_obj),
        );
        $json    = function_exists('wp_json_encode') ? wp_json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) : json_encode($payload);
        $headers = array('Content-Type' => 'application/json');
        if (!empty($o['ping_secret'])) {
            $headers['X-AIJE-Signature'] = 'sha256=' . hash_hmac('sha256', $json, $o['ping_secret']);
        }

        foreach ($urls as $u) {
            if ($u === '' || substr($u, 0, 1) === '#') { continue; }
            $resp = wp_remote_post($u, array(
                'method' => 'POST', 'timeout' => $o['ping_timeout'],
                'headers' => $headers, 'body' => $json,
                'blocking' => true, 'data_format' => 'body',
            ));
            if (is_wp_error($resp)) {
                $this->push_ping_error($u, $event, $post_id, $resp->get_error_message());
                if (!empty($o['ping_retry'])) { $this->queue_ping($u, $json, $headers); }
            } else {
                $code = wp_remote_retrieve_response_code($resp);
                if ($code < 200 || $code >= 300) {
                    $this->push_ping_error($u, $event, $post_id, 'HTTP ' . $code);
                    if (!empty($o['ping_retry'])) { $this->queue_ping($u, $json, $headers); }
                }
            }
        }
    }

    private function queue_ping($url, $json, $headers) {
        $q = get_option(self::PING_QUEUE_OPT, array());
        if (!is_array($q)) { $q = array(); }
        $q[] = array('url' => $url, 'payload' => $json, 'headers' => $headers, 'tries' => 0, 'last' => time());
        update_option(self::PING_QUEUE_OPT, $q, false);
        $this->ensure_ping_cron();
    }

    public function cron_ping_runner() {
        $q = get_option(self::PING_QUEUE_OPT, array());
        if (empty($q) || !is_array($q)) { return; }
        $o    = $this->get_opts();
        $next = array();
        foreach ($q as $job) {
            $resp = wp_remote_post($job['url'], array(
                'method' => 'POST', 'timeout' => $o['ping_timeout'],
                'headers' => $job['headers'], 'body' => $job['payload'],
                'blocking' => true, 'data_format' => 'body',
            ));
            if (is_wp_error($resp)) {
                $job['tries'] = (int) $job['tries'] + 1;
                $this->push_ping_error($job['url'], 'retry', 0, $resp->get_error_message());
                if ($job['tries'] < 3) { $job['last'] = time(); $next[] = $job; }
            } else {
                $code = wp_remote_retrieve_response_code($resp);
                if ($code < 200 || $code >= 300) {
                    $job['tries'] = (int) $job['tries'] + 1;
                    $this->push_ping_error($job['url'], 'retry', 0, 'HTTP ' . $code);
                    if ($job['tries'] < 3) { $job['last'] = time(); $next[] = $job; }
                }
            }
        }
        update_option(self::PING_QUEUE_OPT, $next, false);
    }

    /* ===== Lizenz-Logik ===== */

    private static function get_normalized_host() {
        $home = function_exists('home_url') ? home_url() : '';
        $site = function_exists('site_url') ? site_url() : '';
        $url  = $home ? $home : $site;
        $host = '';
        if ($url) {
            $parsed = @parse_url($url);
            if (is_array($parsed) && !empty($parsed['host'])) {
                $host = strtolower($parsed['host']);
            }
        }
        if ($host !== '' && strpos($host, 'www.') === 0) {
            $host = substr($host, 4);
        }
        return $host;
    }

    private static function base_domain($host) {
        if (!$host) { return ''; }
        $parts = explode('.', $host);
        $n     = count($parts);
        if ($n >= 2) { return $parts[$n - 2] . '.' . $parts[$n - 1]; }
        return $host;
    }

    private static function code_from_domain($domain) {
        $domain = strtolower((string) $domain);
        if ($domain === '') { return ''; }
        $hex = hash('sha256', $domain);
        return strtoupper(substr($hex, 0, 16));
    }

    public static function license_is_valid($code = null) {
        $entered = strtoupper(trim((string) ($code ? $code : get_option(self::OPT_LICENSE, ''))));
        if ($entered === '') { return false; }
        $host = self::get_normalized_host();
        if ($host === '') { return false; }
        $code1 = self::code_from_domain($host);
        if ($code1 && hash_equals($code1, $entered)) { return true; }
        $base = self::base_domain($host);
        if ($base && $base !== $host) {
            $code2 = self::code_from_domain($base);
            if ($code2 && hash_equals($code2, $entered)) { return true; }
        }
        return false;
    }
}

endif;

/* ===== Bootstrap ===== */
new AIJE_Lite_100();

/**
 * Globaler Helper – bleibt als Hookpunkt erhalten.
 * Gibt aktuell immer true zurück (alle Features freigeschaltet).
 * Kann für künftige Pro-Features reaktiviert werden.
 */
if (!function_exists('aije_pro_enabled')) {
    function aije_pro_enabled() {
        return true;
    }
}