diff --git a/install.php b/install.php
new file mode 100644
index 0000000..1ed9c2f
--- /dev/null
+++ b/install.php
@@ -0,0 +1,139 @@
+<?php
+if (!defined('ABSPATH')) exit;
+
+/**
+ * Create plugin database tables on activation and remove them on deactivation.
+ */
+function kc_install_tables() {
+    global $wpdb;
+    $prefix = $wpdb->prefix;
+    $charset_collate = $wpdb->get_charset_collate();
+
+    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
+
+    // Tables definitions
+    $tables_sql = [];
+
+    $tables_sql[] = "CREATE TABLE {$prefix}kc_wahlen (
+        id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+        name varchar(191) NOT NULL,
+        beschreibung text DEFAULT NULL,
+        anzahl_einheiten tinyint NOT NULL DEFAULT 1,
+        min_kapazitaet int NOT NULL DEFAULT 0,
+        max_kapazitaet int NOT NULL DEFAULT 0,
+        freigegeben tinyint(1) NOT NULL DEFAULT 0,
+        deleted tinyint(1) NOT NULL DEFAULT 0,
+        PRIMARY KEY (id)
+    ) $charset_collate";
+
+    $tables_sql[] = "CREATE TABLE {$prefix}kc_workshops (
+        id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+        name varchar(191) NOT NULL,
+        beschreibung text DEFAULT NULL,
+        max_teilnehmer int NOT NULL DEFAULT 0,
+        min_teilnehmer int NOT NULL DEFAULT 0,
+        PRIMARY KEY (id)
+    ) $charset_collate";
+
+    $tables_sql[] = "CREATE TABLE {$prefix}kc_teamer (
+        id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+        vorname varchar(191) DEFAULT NULL,
+        nachname varchar(191) DEFAULT NULL,
+        PRIMARY KEY (id)
+    ) $charset_collate";
+
+    $tables_sql[] = "CREATE TABLE {$prefix}kc_teilnehmer (
+        id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+        vorname varchar(191) DEFAULT NULL,
+        nachname varchar(191) DEFAULT NULL,
+        wahl_id bigint(20) unsigned NOT NULL DEFAULT 0,
+        phase tinyint NOT NULL DEFAULT 1,
+        wunsch1 bigint(20) unsigned DEFAULT NULL,
+        wunsch2 bigint(20) unsigned DEFAULT NULL,
+        wunsch3 bigint(20) unsigned DEFAULT NULL,
+		deleted tinyint(1) NOT NULL DEFAULT 0,
+        PRIMARY KEY (id)
+    ) $charset_collate";
+
+    $tables_sql[] = "CREATE TABLE {$prefix}kc_wahl_workshops (
+        id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+        wahl_id bigint(20) unsigned NOT NULL DEFAULT 0,
+        workshop_id bigint(20) unsigned NOT NULL DEFAULT 0,
+        phase tinyint NOT NULL DEFAULT 1,
+        PRIMARY KEY (id)
+    ) $charset_collate";
+
+    $tables_sql[] = "CREATE TABLE {$prefix}kc_force_zuteilung (
+        id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+        teilnehmer_id bigint(20) unsigned NOT NULL DEFAULT 0,
+        wahl_id bigint(20) unsigned NOT NULL DEFAULT 0,
+        phase tinyint NOT NULL DEFAULT 1,
+        workshop_id bigint(20) unsigned DEFAULT NULL,
+        kommentar text DEFAULT NULL,
+        PRIMARY KEY (id)
+    ) $charset_collate";
+
+    $tables_sql[] = "CREATE TABLE {$prefix}kc_zuteilung (
+        id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+        teilnehmer_id bigint(20) unsigned NOT NULL DEFAULT 0,
+        vorname varchar(191) DEFAULT NULL,
+        nachname varchar(191) DEFAULT NULL,
+        wahl_id bigint(20) unsigned NOT NULL DEFAULT 0,
+        phase tinyint NOT NULL DEFAULT 1,
+        workshop_id bigint(20) unsigned DEFAULT NULL,
+        wunsch_rang tinyint DEFAULT NULL,
+        PRIMARY KEY (id)
+    ) $charset_collate";
+	
+	$tables_sql[] = "CREATE TABLE {$prefix}kc_workshop_teamer (
+		id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+		workshop_id bigint(20) unsigned DEFAULT NULL,
+		teamer_id bigint(20) unsigned DEFAULT NULL,
+		PRIMARY KEY (id)
+	) $charset_collate";
+
+    foreach ($tables_sql as $sql) {
+        dbDelta($sql);
+    }
+
+    // Post-creation migration guard: ensure min_teilnehmer exists for older installs
+    $col = $wpdb->get_var($wpdb->prepare("SHOW COLUMNS FROM {$prefix}kc_workshops LIKE %s", 'min_teilnehmer'));
+    if (empty($col)) {
+        // try to add the column (no-op on newer installs)
+        $wpdb->query("ALTER TABLE {$prefix}kc_workshops ADD COLUMN min_teilnehmer INT NOT NULL DEFAULT 0");
+    }
+
+    // Optionally store plugin version
+    add_option('kc_workshopwahl_db_version', '1.0');
+}
+
+function kc_uninstall_tables() {
+    global $wpdb;
+    $prefix = $wpdb->prefix;
+
+    $tables = [
+        "{$prefix}kc_zuteilung",
+        "{$prefix}kc_force_zuteilung",
+        "{$prefix}kc_wahl_workshops",
+        "{$prefix}kc_teilnehmer",
+        "{$prefix}kc_teamer",
+        "{$prefix}kc_workshops",
+        "{$prefix}kc_wahlen",
+		"{$prefix}kc_workshop_teamer"
+    ];
+
+    foreach ($tables as $t) {
+        $wpdb->query("DROP TABLE IF EXISTS $t");
+    }
+
+    delete_option('kc_workshopwahl_db_version');
+}
+
+// Backwards-compat wrapper for register_activation_hook usage
+if (!function_exists('kc_register_hooks_internal')) {
+    function kc_register_hooks_internal() {
+        // intentionally left blank
+    }
+}
+
+?>
diff --git a/konficastle-workshopwahl.php b/konficastle-workshopwahl.php
new file mode 100644
index 0000000..8e71ad4
--- /dev/null
+++ b/konficastle-workshopwahl.php
@@ -0,0 +1,68 @@
+<?php
+/*
+Plugin Name: Workshopwahl
+Description: Workshop wahl plugin mit zuteilungsfunktion
+Version: 1.0
+Author: Linus Nilson
+*/
+
+if (!defined('ABSPATH')) exit;
+
+// Stylesheet einbinden
+add_action('admin_enqueue_scripts', function($hook) {
+    // Nur auf den Plugin-Seiten laden (optional: prüfe $hook!)
+    if (strpos($hook, 'kc_') !== false) {
+        wp_enqueue_style(
+            'kc-admin-style',
+            plugin_dir_url(__FILE__) . 'assets/kc-admin-style.css',
+            [],
+            filemtime(plugin_dir_path(__FILE__) . 'assets/kc-admin-style.css')
+        );
+    }
+});
+
+
+add_action('admin_enqueue_scripts', function($hook) {
+    // Nur für unser Plugin-Menü!
+    if (strpos($hook, 'kc_') === false) return;
+    wp_enqueue_script('select2', 'https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js', ['jquery'], null, true);
+    wp_enqueue_style('select2', 'https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css');
+});
+
+
+
+add_action('wp_enqueue_scripts', function() {
+    wp_enqueue_style('kc-workshopwahl-form', plugins_url('assets/frontend-form.css', __FILE__));
+});
+
+// Zentrale Admin-Menüstruktur
+add_action('admin_menu', function() {
+    add_menu_page('Wahlen', 'Wahlen', 'manage_options', 'kc_wahlen', 'kc_wahlen_page');
+
+    add_submenu_page('kc_wahlen', 'Teamer', 'Teamer', 'manage_options', 'kc_teamer', 'kc_teamer_page');
+
+    add_submenu_page('kc_wahlen', 'Workshops', 'Workshops', 'manage_options', 'kc_workshops', 'kc_workshops_page');
+
+    add_submenu_page('kc_wahlen', 'Teilnehmer', 'Teilnehmer', 'manage_options', 'kc_teilnehmer', 'kc_teilnehmer_page');
+
+    add_submenu_page('kc_wahlen', 'Force-Zuteilung', 'Force-Zuteilung', 'manage_options', 'kc_force_zuteilung', 'kc_force_zuteilung_page');
+    
+    add_submenu_page('kc_wahlen', 'Zuteilungen', 'Zuteilungen', 'manage_options', 'kc_zuteilungen', 'kc_zuteilungen_page');
+    
+    // Data management (test data) - visible only to super-admin (we'll check inside page)
+    add_submenu_page('kc_wahlen', 'Datenverwaltung', 'Datenverwaltung', 'manage_options', 'kc_data', 'kc_data_page');
+
+});
+
+// Includes – jede Admin-Seite ruft oben kc_admin_tabs() auf!
+require_once plugin_dir_path(__FILE__).'includes/admin-wahlen.php';
+require_once plugin_dir_path(__FILE__).'includes/admin-workshops.php';
+require_once plugin_dir_path(__FILE__).'includes/admin-teilnehmer.php';
+require_once plugin_dir_path(__FILE__).'includes/admin-teamer.php';
+require_once plugin_dir_path(__FILE__).'includes/force-zuteilung.php';
+require_once plugin_dir_path(__FILE__).'includes/admin-zuteilungen.php';
+require_once plugin_dir_path(__FILE__).'includes/frontend-form.php';
+require_once plugin_dir_path(__FILE__).'includes/frontend-ergebnis.php';
+require_once plugin_dir_path(__FILE__).'includes/zuteilungslogik.php';
+require_once plugin_dir_path(__FILE__).'includes/admin-data.php';
+require_once plugin_dir_path(__FILE__).'install.php';
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