diff --git a/custom-search-plugin.php b/custom-search-plugin.php
new file mode 100644
index 0000000..b7d779e
--- /dev/null
+++ b/custom-search-plugin.php
@@ -0,0 +1,308 @@
+<?php
+/**
+ * Plugin Name: Custom Search Plugin
+ * Plugin URI: 
+ * Description: Fügt eine Suchfunktion als Shortcode, Widget und Menüeintrag hinzu.(Shortcode: [display_search_form])
+ * Version: 1.1
+ * Author: M_Viper
+ * Author URI: https://m-viper.de
+ * Requires at least: 6.7.2
+ * Tested up to: 6.7.2
+ * License: GPL2
+ * License URI: https://www.gnu.org/licenses/gpl-2.0.html
+ * Text Domain: wp-search
+ * Tags: search Autorsearch
+ */
+
+if (!defined('ABSPATH')) {
+    exit; // Sicherheitsmaßnahme
+}
+
+// 1️⃣ **Aktualisiertes Suchformular mit Umschaltoption**
+function csp_search_form() {
+    ob_start();
+    $search_type = isset($_GET['search_type']) ? sanitize_text_field($_GET['search_type']) : 'all';
+    ?>
+    <style>
+        .csp-search-form {
+            display: flex;
+            flex-direction: column;
+            gap: 8px;
+            max-width: 400px;
+            margin: 10px auto;
+            padding: 15px;
+            background: #f8f9fa;
+            border-radius: 15px;
+            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+        }
+
+        .csp-search-fields {
+            display: flex;
+            gap: 8px;
+        }
+
+        .csp-search-form input[type="text"] {
+            flex: 1;
+            padding: 10px;
+            border: 1px solid #ddd;
+            border-radius: 20px;
+            font-size: 16px;
+        }
+
+        .csp-search-type {
+            display: flex;
+            gap: 10px;
+            margin-bottom: 10px;
+        }
+
+        .csp-search-type label {
+            display: flex;
+            align-items: center;
+            gap: 5px;
+            cursor: pointer;
+        }
+
+        .csp-search-type input[type="radio"] {
+            margin: 0;
+        }
+
+        .csp-search-form input[type="submit"] {
+            background: #0073aa;
+            color: white;
+            border: none;
+            padding: 10px 15px;
+            border-radius: 20px;
+            cursor: pointer;
+            font-size: 16px;
+            transition: background 0.3s;
+        }
+
+        .csp-search-form input[type="submit"]:hover {
+            background: #005f8d;
+        }
+    </style>
+    <form class="csp-search-form" role="search" method="get" action="<?php echo esc_url(home_url('/')); ?>">
+        <div class="csp-search-type">
+            <label>
+                <input type="radio" name="search_type" value="all" <?php checked($search_type, 'all'); ?>>
+                <?php _e('Alle Inhalte', 'textdomain'); ?>
+            </label>
+            <label>
+                <input type="radio" name="search_type" value="title" <?php checked($search_type, 'title'); ?>>
+                <?php _e('Nur Titel', 'textdomain'); ?>
+            </label>
+            <label>
+                <input type="radio" name="search_type" value="guest_author" <?php checked($search_type, 'guest_author'); ?>>
+                <?php _e('Nur Gastautoren', 'textdomain'); ?>
+            </label>
+        </div>
+        <div class="csp-search-fields">
+            <input type="text" name="s" placeholder="🔍 Suchbegriff eingeben" value="<?php echo esc_attr(get_search_query()); ?>">
+            <input type="submit" value="Suchen">
+        </div>
+    </form>
+    <?php
+    return ob_get_clean();
+}
+
+// 2️⃣ **Shortcode für das Suchformular**
+add_shortcode('custom_search', 'csp_search_form');
+
+// 3️⃣ **Aktualisiertes Suchfeld als Widget**
+class CSP_Search_Widget extends WP_Widget {
+    public function __construct() {
+        parent::__construct(
+            'csp_search_widget',
+            __('Suche Widget', 'textdomain'),
+            array('description' => __('Suchfeld mit Optionen für Titel- und Gastautoren-Suche', 'textdomain'))
+        );
+    }
+
+    public function widget($args, $instance) {
+        echo $args['before_widget'];
+        echo '<h3 class="widget-title">' . __('Suche', 'textdomain') . '</h3>';
+        echo csp_search_form();
+        echo $args['after_widget'];
+    }
+}
+
+function csp_register_widget() {
+    register_widget('CSP_Search_Widget');
+}
+add_action('widgets_init', 'csp_register_widget');
+
+// 4️⃣ **Einstellungsseite hinzufügen**
+function csp_add_menu_page() {
+    add_options_page(
+        'Custom Search Settings',
+        'Custom Search',
+        'manage_options',
+        'custom-search-settings',
+        'csp_render_settings_page'
+    );
+}
+add_action('admin_menu', 'csp_add_menu_page');
+
+// 5️⃣ **Einstellungsseite rendern**
+function csp_render_settings_page() {
+    ?>
+    <div class="wrap">
+        <h1>Custom Search Settings</h1>
+        <form method="post" action="options.php">
+            <?php
+            settings_fields('csp_settings_group');
+            do_settings_sections('custom-search-settings');
+            submit_button();
+            ?>
+        </form>
+    </div>
+    <?php
+}
+
+// 6️⃣ **Einstellungen registrieren**
+function csp_register_settings() {
+    register_setting('csp_settings_group', 'csp_selected_menu');
+    
+    add_settings_section(
+        'csp_main_section',
+        'Menu Selection',
+        'csp_section_callback',
+        'custom-search-settings'
+    );
+
+    add_settings_field(
+        'csp_menu_select',
+        'Select Menu',
+        'csp_menu_select_callback',
+        'custom-search-settings',
+        'csp_main_section'
+    );
+}
+add_action('admin_init', 'csp_register_settings');
+
+// 7️⃣ **Callback für die Sektion**
+function csp_section_callback() {
+    echo 'Choose which menu to display the search form in:';
+}
+
+// 8️⃣ **Callback für das Auswahlfeld**
+function csp_menu_select_callback() {
+    $menus = wp_get_nav_menus();
+    $selected_menu = get_option('csp_selected_menu');
+    
+    echo '<select name="csp_selected_menu">';
+    echo '<option value="">Select a menu</option>';
+    foreach ($menus as $menu) {
+        echo '<option value="' . $menu->term_id . '" ' . selected($selected_menu, $menu->term_id, false) . '>' . esc_html($menu->name) . '</option>';
+    }
+    echo '</select>';
+}
+
+// 9️⃣ **Suchfeld zum ausgewählten Menü hinzufügen**
+function csp_add_search_to_menus($items, $args) {
+    $selected_menu = get_option('csp_selected_menu');
+    if ($selected_menu && $args->menu->term_id == $selected_menu) {
+        $items .= '<li class="menu-item search-menu-item">' . csp_search_form() . '</li>';
+    }
+    return $items;
+}
+add_filter('wp_nav_menu_items', 'csp_add_search_to_menus', 10, 2);
+
+// 🔟 **Aktualisierte Suchfunktion mit Suchtyp-Unterscheidung**
+function csp_custom_search_results($query) {
+    if (!is_admin() && $query->is_search() && $query->is_main_query()) {
+        $search_type = isset($_GET['search_type']) ? sanitize_text_field($_GET['search_type']) : 'all';
+        $search_term = $query->get('s');
+
+        switch($search_type) {
+            case 'title':
+                $query->set('post_title_like', $search_term);
+                $query->set('s', '');
+                add_filter('posts_where', 'csp_title_search_where', 10, 2);
+                break;
+
+            case 'guest_author':
+                $meta_query = array(
+                    array(
+                        'key' => '_guest_author',
+                        'value' => $search_term,
+                        'compare' => '='
+                    )
+                );
+                $query->set('meta_query', $meta_query);
+                $query->set('s', '');
+                $query->set('post_type', 'post');
+                break;
+
+            default: // 'all'
+                $query->set('_meta_or_title', $search_term);
+                add_filter('posts_search', 'csp_custom_search_where', 10, 2);
+                add_filter('posts_join', 'csp_custom_search_join', 10, 2);
+                add_filter('posts_groupby', 'csp_custom_search_groupby', 10, 2);
+                break;
+        }
+    }
+}
+add_action('pre_get_posts', 'csp_custom_search_results');
+
+// 1️⃣1️⃣ **Hilfsfunktionen für verschiedene Suchtypen**
+function csp_title_search_where($where, $query) {
+    global $wpdb;
+    if ($search_term = $query->get('post_title_like')) {
+        $where .= $wpdb->prepare(
+            " AND {$wpdb->posts}.post_title LIKE %s",
+            '%' . $wpdb->esc_like($search_term) . '%'
+        );
+    }
+    return $where;
+}
+
+function csp_custom_search_where($where, $query) {
+    global $wpdb;
+    if ($search_term = $query->get('_meta_or_title')) {
+        $search = '%' . $wpdb->esc_like($search_term) . '%';
+        $where .= $wpdb->prepare(
+            " OR ({$wpdb->posts}.post_title LIKE %s)
+              OR ({$wpdb->posts}.post_content LIKE %s)
+              OR ({$wpdb->posts}.post_excerpt LIKE %s)
+              OR (guest_author.meta_value LIKE %s)
+              OR ({$wpdb->users}.display_name LIKE %s)",
+            $search, $search, $search, $search, $search
+        );
+    }
+    return $where;
+}
+
+function csp_custom_search_join($join, $query) {
+    global $wpdb;
+    if ($query->get('_meta_or_title')) {
+        $join .= " LEFT JOIN {$wpdb->postmeta} guest_author ON ({$wpdb->posts}.ID = guest_author.post_id AND guest_author.meta_key = '_guest_author')";
+        $join .= " LEFT JOIN {$wpdb->users} ON ({$wpdb->posts}.post_author = {$wpdb->users}.ID)";
+    }
+    return $join;
+}
+
+function csp_custom_search_groupby($groupby, $query) {
+    global $wpdb;
+    if ($query->get('_meta_or_title')) {
+        $groupby = "{$wpdb->posts}.ID";
+    }
+    return $groupby;
+}
+
+// 1️⃣2️⃣ **Hilfsfunktion für Gastautoren-Suche**
+function csp_guest_author_search_where($where, $query) {
+    global $wpdb;
+    if ($query->get('meta_query')) {
+        $where .= " AND EXISTS (
+            SELECT 1 FROM {$wpdb->postmeta}
+            WHERE {$wpdb->postmeta}.post_id = {$wpdb->posts}.ID
+            AND {$wpdb->postmeta}.meta_key = '_guest_author'
+            AND {$wpdb->postmeta}.meta_value != ''
+        )";
+    }
+    return $where;
+}
+add_filter('posts_where', 'csp_guest_author_search_where', 10, 2);
+
+?>