diff --git a/index4.php b/index4.php
new file mode 100644
index 0000000..88fe8c7
--- /dev/null
+++ b/index4.php
@@ -0,0 +1,1218 @@
+<?php
+declare(strict_types=1);
+
+use PHPMailer\PHPMailer\PHPMailer;
+use PHPMailer\PHPMailer\Exception;
+
+require __DIR__ . '/vendor/autoload.php';
+
+session_start();
+error_reporting(E_ALL);
+ini_set('display_errors', '1');
+
+const STREAM_SOURCE = 'test_video.m3u8';
+const LOGO_PATH = 'logo.png';
+const IMAGE_DIR = __DIR__ . '/image';
+const UPLOAD_DIR = __DIR__ . '/uploads';
+const VIDEO_DIR = __DIR__ . '/videos';
+const GALLERY_DIR = __DIR__ . '/gallery';
+const COMMENTS_FILE = __DIR__ . '/comments.json';
+const GUESTBOOK_FILE = __DIR__ . '/guestbook.json';
+const FEEDBACK_FILE = __DIR__ . '/feedbacks.json';
+
+if (!is_dir(IMAGE_DIR)) {
+    @mkdir(IMAGE_DIR, 0777, true);
+}
+if (!is_dir(UPLOAD_DIR)) {
+    @mkdir(UPLOAD_DIR, 0777, true);
+}
+if (!is_dir(VIDEO_DIR)) {
+    @mkdir(VIDEO_DIR, 0777, true);
+}
+if (!is_dir(GALLERY_DIR)) {
+    @mkdir(GALLERY_DIR, 0777, true);
+}
+if (!file_exists(COMMENTS_FILE)) {
+    file_put_contents(COMMENTS_FILE, json_encode([]));
+}
+if (!file_exists(GUESTBOOK_FILE)) {
+    file_put_contents(GUESTBOOK_FILE, json_encode([]));
+}
+if (!file_exists(FEEDBACK_FILE)) {
+    file_put_contents(FEEDBACK_FILE, json_encode([]));
+}
+
+$oldDomains = [
+    'www.aurora-wetter-lifecam.ch',
+    'www.aurora-wetter-livecam.ch'
+];
+$newDomain = 'www.aurora-weather-livecam.com';
+
+if (isset($_SERVER['HTTP_HOST']) && in_array($_SERVER['HTTP_HOST'], $oldDomains, true)) {
+    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
+    $newUrl = $protocol . '://' . $newDomain . ($_SERVER['REQUEST_URI'] ?? '/');
+    header('HTTP/1.1 301 Moved Permanently');
+    header('Location: ' . $newUrl);
+    exit;
+}
+
+function respond_json(array $payload, int $code = 200): void
+{
+    http_response_code($code);
+    header('Content-Type: application/json; charset=utf-8');
+    echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    exit;
+}
+
+class LanguageManager
+{
+    private array $translations = [
+        'de' => [
+            'title' => 'Aurora Weather Livecam',
+            'welcome' => 'Willkommen bei der Aurora Live Webcam',
+            'subline' => 'Livebilder, Zeitraffer, Archiv & Community – alles in einem sonnigen Dashboard.',
+            'live' => 'Live',
+            'timelapse' => 'Zeitraffer',
+            'archive' => 'Archiv',
+            'gallery' => 'Galerie',
+            'community' => 'Community',
+            'contact' => 'Kontakt',
+            'guestbook' => 'Gästebuch',
+            'send' => 'Senden',
+            'name' => 'Name',
+            'email' => 'E-Mail',
+            'message' => 'Nachricht',
+            'screenshot' => 'Screenshot',
+            'clip' => 'Clip aufnehmen',
+            'download' => 'Neueste Aufnahme laden',
+            'calendar_title' => 'Visueller Wetterkalender',
+            'language' => 'Sprache',
+            'rating' => 'Bewertung',
+            'comment' => 'Kommentar',
+            'add_entry' => 'Eintrag hinzufügen',
+            'view_all' => 'Alle anzeigen',
+            'privacy' => 'Privatsphäre',
+            'share' => 'Teilen',
+            'pip' => 'Bild-in-Bild',
+            'stats' => 'Stream-Status',
+            'starlink' => 'Starlink-Verbindung',
+            'starlink_caption' => 'Scanne den QR-Code für das Starlink Satelliteninternet.',
+            'starlink_alt' => 'Starlink QR-Code',
+        ],
+        'en' => [
+            'title' => 'Aurora Weather Livecam',
+            'welcome' => 'Welcome to the Aurora Live Webcam',
+            'subline' => 'Live footage, timelapse, archive & community – all in one sunny dashboard.',
+            'live' => 'Live',
+            'timelapse' => 'Timelapse',
+            'archive' => 'Archive',
+            'gallery' => 'Gallery',
+            'community' => 'Community',
+            'contact' => 'Contact',
+            'guestbook' => 'Guestbook',
+            'send' => 'Send',
+            'name' => 'Name',
+            'email' => 'Email',
+            'message' => 'Message',
+            'screenshot' => 'Screenshot',
+            'clip' => 'Record clip',
+            'download' => 'Download latest capture',
+            'calendar_title' => 'Visual Weather Calendar',
+            'language' => 'Language',
+            'rating' => 'Rating',
+            'comment' => 'Comment',
+            'add_entry' => 'Add entry',
+            'view_all' => 'View all',
+            'privacy' => 'Privacy',
+            'share' => 'Share',
+            'pip' => 'Picture-in-Picture',
+            'stats' => 'Stream status',
+            'starlink' => 'Starlink Connection',
+            'starlink_caption' => 'Scan the QR code to reach Starlink satellite internet.',
+            'starlink_alt' => 'Starlink QR code',
+        ],
+        'fr' => [
+            'title' => 'Aurora Weather Livecam',
+            'welcome' => 'Bienvenue sur la webcam Aurora',
+            'subline' => 'Images en direct, time-lapse, archive et communauté – réunis dans un tableau de bord ensoleillé.',
+            'live' => 'Direct',
+            'timelapse' => 'Accéléré',
+            'archive' => 'Archive',
+            'gallery' => 'Galerie',
+            'community' => 'Communauté',
+            'contact' => 'Contact',
+            'guestbook' => 'Livre d’or',
+            'send' => 'Envoyer',
+            'name' => 'Nom',
+            'email' => 'E-mail',
+            'message' => 'Message',
+            'screenshot' => 'Capture',
+            'clip' => 'Enregistrer un clip',
+            'download' => 'Télécharger la dernière capture',
+            'calendar_title' => 'Calendrier météo visuel',
+            'language' => 'Langue',
+            'rating' => 'Évaluation',
+            'comment' => 'Commentaire',
+            'add_entry' => 'Ajouter une entrée',
+            'view_all' => 'Tout voir',
+            'privacy' => 'Confidentialité',
+            'share' => 'Partager',
+            'pip' => 'Picture-in-Picture',
+            'stats' => 'Statut du flux',
+            'starlink' => 'Connexion Starlink',
+            'starlink_caption' => 'Scannez le QR code pour accéder à l’internet satellite Starlink.',
+            'starlink_alt' => 'QR code Starlink',
+        ],
+        'it' => [
+            'title' => 'Aurora Weather Livecam',
+            'welcome' => 'Benvenuti alla webcam Aurora',
+            'subline' => 'Live, time-lapse, archivio e community – tutto in un dashboard soleggiato.',
+            'live' => 'Live',
+            'timelapse' => 'Time-lapse',
+            'archive' => 'Archivio',
+            'gallery' => 'Galleria',
+            'community' => 'Community',
+            'contact' => 'Contatto',
+            'guestbook' => 'Libro degli ospiti',
+            'send' => 'Invia',
+            'name' => 'Nome',
+            'email' => 'E-mail',
+            'message' => 'Messaggio',
+            'screenshot' => 'Screenshot',
+            'clip' => 'Registra clip',
+            'download' => 'Scarica l’ultima registrazione',
+            'calendar_title' => 'Calendario Meteo Visivo',
+            'language' => 'Lingua',
+            'rating' => 'Valutazione',
+            'comment' => 'Commento',
+            'add_entry' => 'Aggiungi',
+            'view_all' => 'Vedi tutto',
+            'privacy' => 'Privacy',
+            'share' => 'Condividi',
+            'pip' => 'Picture-in-Picture',
+            'stats' => 'Stato del flusso',
+            'starlink' => 'Connessione Starlink',
+            'starlink_caption' => 'Scansiona il QR code per accedere a Starlink Internet satellitare.',
+            'starlink_alt' => 'QR code Starlink',
+        ],
+        'zh' => [
+            'title' => '极光天气直播摄像头',
+            'welcome' => '欢迎来到极光直播摄像头',
+            'subline' => '实时画面、延时摄影、档案与社区——尽在阳光活力仪表盘。',
+            'live' => '直播',
+            'timelapse' => '延时摄影',
+            'archive' => '档案',
+            'gallery' => '图集',
+            'community' => '社区',
+            'contact' => '联系',
+            'guestbook' => '留言簿',
+            'send' => '发送',
+            'name' => '姓名',
+            'email' => '邮箱',
+            'message' => '留言',
+            'screenshot' => '截图',
+            'clip' => '录制剪辑',
+            'download' => '下载最新捕获',
+            'calendar_title' => '可视化天气日历',
+            'language' => '语言',
+            'rating' => '评分',
+            'comment' => '评论',
+            'add_entry' => '添加条目',
+            'view_all' => '查看全部',
+            'privacy' => '隐私',
+            'share' => '分享',
+            'pip' => '画中画',
+            'stats' => '流状态',
+            'starlink' => 'Starlink 连接',
+            'starlink_caption' => '扫描二维码访问 Starlink 高速卫星网络。',
+            'starlink_alt' => 'Starlink 二维码',
+        ],
+    ];
+
+    public function getCurrentLocale(): string
+    {
+        if (isset($_POST['language'])) {
+            $_SESSION['lang'] = $_POST['language'];
+        }
+        return $_SESSION['lang'] ?? 'de';
+    }
+
+    public function get(string $key, ?string $locale = null): string
+    {
+        $locale = $locale ?? $this->getCurrentLocale();
+        $locale = array_key_exists($locale, $this->translations) ? $locale : 'de';
+        return $this->translations[$locale][$key] ?? $this->translations['de'][$key] ?? $key;
+    }
+
+    public function getAllTranslations(): array
+    {
+        return $this->translations;
+    }
+}
+
+class WebcamManager
+{
+    private string $videoSrc;
+
+    public function __construct(string $videoSrc = STREAM_SOURCE)
+    {
+        $this->videoSrc = $videoSrc;
+    }
+
+    public function getVideoSrc(): string
+    {
+        return $this->videoSrc;
+    }
+
+    public function getImageFiles(): array
+    {
+        $files = glob(IMAGE_DIR . '/screenshot_*.jpg') ?: [];
+        usort($files, static fn(string $a, string $b) => filemtime($b) <=> filemtime($a));
+        return array_slice($files, 0, 10);
+    }
+
+    public function getLatestVideo(): ?string
+    {
+        $videos = glob(VIDEO_DIR . '/*.mp4');
+        if (!$videos) {
+            return null;
+        }
+        usort($videos, static fn(string $a, string $b) => filemtime($b) <=> filemtime($a));
+        return $videos[0];
+    }
+
+    public function captureSnapshot(): array
+    {
+        $outputFile = 'snapshot_' . date('YmdHis') . '.jpg';
+        $targetPath = UPLOAD_DIR . '/' . $outputFile;
+        $command = sprintf(
+            "ffmpeg -y -i %s -i %s -filter_complex 'overlay=main_w-overlay_w-10:10' -frames:v 1 -q:v 2 %s",
+            escapeshellarg($this->videoSrc),
+            escapeshellarg(LOGO_PATH),
+            escapeshellarg($targetPath)
+        );
+        exec($command, $output, $returnVar);
+        if ($returnVar !== 0 || !file_exists($targetPath)) {
+            return ['success' => false, 'message' => 'Snapshot konnte nicht erstellt werden.'];
+        }
+        return ['success' => true, 'file' => basename($targetPath)];
+    }
+
+    public function captureClip(int $duration = 10): array
+    {
+        $outputFile = 'sequence_' . date('YmdHis') . '.mp4';
+        $targetPath = UPLOAD_DIR . '/' . $outputFile;
+        $command = sprintf(
+            "ffmpeg -y -i %s -i %s -filter_complex 'overlay=10:10' -t %d -c:v libx264 -preset fast -crf 23 %s",
+            escapeshellarg($this->videoSrc),
+            escapeshellarg(LOGO_PATH),
+            $duration,
+            escapeshellarg($targetPath)
+        );
+        exec($command, $output, $returnVar);
+        if ($returnVar !== 0 || !file_exists($targetPath)) {
+            return ['success' => false, 'message' => 'Clip konnte nicht erstellt werden.'];
+        }
+        return ['success' => true, 'file' => basename($targetPath)];
+    }
+
+    public function getStreamStats(): array
+    {
+        return [
+            'bitrate' => rand(4200, 6200),
+            'latency' => rand(3, 9),
+            'updated' => date('H:i:s'),
+        ];
+    }
+
+    public function getGallery(): array
+    {
+        $images = [];
+        foreach (glob(GALLERY_DIR . '/*.{jpg,jpeg,png,gif}', GLOB_BRACE) ?: [] as $file) {
+            $timestamp = filemtime($file) ?: 0;
+            $images[] = [
+                'src' => str_replace(__DIR__ . '/', '', $file),
+                'date' => date('Y-m-d H:i', $timestamp),
+                'timestamp' => $timestamp,
+            ];
+        }
+        usort($images, static fn(array $a, array $b) => $b['timestamp'] <=> $a['timestamp']);
+        $images = array_slice($images, 0, 10);
+        return array_map(static fn(array $image) => [
+            'src' => $image['src'],
+            'date' => $image['date'],
+        ], $images);
+    }
+}
+
+class VisualCalendarManager
+{
+    private array $monthNames = [
+        1 => ['de' => 'Januar', 'en' => 'January', 'it' => 'Gennaio', 'fr' => 'Janvier', 'zh' => '一月'],
+        2 => ['de' => 'Februar', 'en' => 'February', 'it' => 'Febbraio', 'fr' => 'Février', 'zh' => '二月'],
+        3 => ['de' => 'März', 'en' => 'March', 'it' => 'Marzo', 'fr' => 'Mars', 'zh' => '三月'],
+        4 => ['de' => 'April', 'en' => 'April', 'it' => 'Aprile', 'fr' => 'Avril', 'zh' => '四月'],
+        5 => ['de' => 'Mai', 'en' => 'May', 'it' => 'Maggio', 'fr' => 'Mai', 'zh' => '五月'],
+        6 => ['de' => 'Juni', 'en' => 'June', 'it' => 'Giugno', 'fr' => 'Juin', 'zh' => '六月'],
+        7 => ['de' => 'Juli', 'en' => 'July', 'it' => 'Luglio', 'fr' => 'Juillet', 'zh' => '七月'],
+        8 => ['de' => 'August', 'en' => 'August', 'it' => 'Agosto', 'fr' => 'Août', 'zh' => '八月'],
+        9 => ['de' => 'September', 'en' => 'September', 'it' => 'Settembre', 'fr' => 'Septembre', 'zh' => '九月'],
+        10 => ['de' => 'Oktober', 'en' => 'October', 'it' => 'Ottobre', 'fr' => 'Octobre', 'zh' => '十月'],
+        11 => ['de' => 'November', 'en' => 'November', 'it' => 'Novembre', 'fr' => 'Novembre', 'zh' => '十一月'],
+        12 => ['de' => 'Dezember', 'en' => 'December', 'it' => 'Dicembre', 'fr' => 'Décembre', 'zh' => '十二月'],
+    ];
+
+    public function getMonthData(int $year, int $month): array
+    {
+        $firstDay = new DateTimeImmutable(sprintf('%04d-%02d-01', $year, $month));
+        $daysInMonth = (int) $firstDay->format('t');
+        $days = [];
+        for ($day = 1; $day <= $daysInMonth; $day++) {
+            $date = sprintf('%04d%02d%02d', $year, $month, $day);
+            $pattern = VIDEO_DIR . "/daily_video_{$date}_*.mp4";
+            $matches = glob($pattern) ?: [];
+            $days[] = [
+                'day' => $day,
+                'hasVideos' => !empty($matches),
+                'count' => count($matches)
+            ];
+        }
+        return [
+            'year' => $year,
+            'month' => $month,
+            'monthName' => $this->monthNames[$month] ?? $this->monthNames[date('n')],
+            'days' => $days,
+        ];
+    }
+
+    public function getVideosForDate(int $year, int $month, int $day): array
+    {
+        $date = sprintf('%04d%02d%02d', $year, $month, $day);
+        $videos = [];
+        foreach (glob(VIDEO_DIR . "/daily_video_{$date}_*.mp4") as $file) {
+            $videos[] = [
+                'file' => basename($file),
+                'size' => filesize($file),
+                'time' => date('H:i', filemtime($file)),
+            ];
+        }
+        return $videos;
+    }
+}
+
+class GuestbookManager
+{
+    private array $entries = [];
+
+    public function __construct()
+    {
+        $content = json_decode((string) file_get_contents(GUESTBOOK_FILE), true);
+        $this->entries = is_array($content) ? $content : [];
+    }
+
+    public function addEntry(string $name, string $message, int $rating = 5): array
+    {
+        $entry = [
+            'name' => htmlspecialchars($name, ENT_QUOTES, 'UTF-8'),
+            'message' => htmlspecialchars($message, ENT_QUOTES, 'UTF-8'),
+            'rating' => max(1, min(5, $rating)),
+            'created' => date('Y-m-d H:i:s')
+        ];
+        $this->entries[] = $entry;
+        file_put_contents(GUESTBOOK_FILE, json_encode($this->entries, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE));
+        return $entry;
+    }
+
+    public function getEntries(int $limit = 10): array
+    {
+        return array_slice(array_reverse($this->entries), 0, $limit);
+    }
+}
+
+class ContactManager
+{
+    private string $adminEmail = 'metacube@gmail.com';
+    private string $gmailUser = 'metacube@gmail.com';
+    private string $gmailAppPassword = 'qggk hsxz fdkq jgxa';
+
+    public function handle(string $name, string $email, string $message): array
+    {
+        if ($name === '' || $email === '' || $message === '') {
+            return ['success' => false, 'message' => 'Bitte alle Felder ausfüllen.'];
+        }
+        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
+            return ['success' => false, 'message' => 'Bitte eine gültige E-Mail-Adresse verwenden.'];
+        }
+        if (mb_strlen($message) < 10) {
+            return ['success' => false, 'message' => 'Die Nachricht ist zu kurz.'];
+        }
+
+        $payload = [
+            'name' => htmlspecialchars(trim($name), ENT_QUOTES, 'UTF-8'),
+            'email' => filter_var(trim($email), FILTER_SANITIZE_EMAIL),
+            'message' => htmlspecialchars(trim($message), ENT_QUOTES, 'UTF-8'),
+            'date' => date('Y-m-d H:i:s'),
+            'ip' => $_SERVER['REMOTE_ADDR'] ?? 'unknown',
+            'user_agent' => $_SERVER['HTTP_USER_AGENT'] ?? 'unknown',
+        ];
+
+        $existing = json_decode((string) file_get_contents(FEEDBACK_FILE), true);
+        $existing = is_array($existing) ? $existing : [];
+        $existing[] = $payload;
+        file_put_contents(FEEDBACK_FILE, json_encode($existing, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE));
+
+        $mail = new PHPMailer(true);
+        try {
+            $mail->isSMTP();
+            $mail->Host = 'smtp.gmail.com';
+            $mail->SMTPAuth = true;
+            $mail->Username = $this->gmailUser;
+            $mail->Password = $this->gmailAppPassword;
+            $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
+            $mail->Port = 587;
+            $mail->setFrom($this->gmailUser, 'Aurora Livecam');
+            $mail->addAddress($this->adminEmail);
+            $mail->addReplyTo($payload['email'], $payload['name']);
+            $mail->isHTML(true);
+            $mail->CharSet = 'UTF-8';
+            $mail->Subject = 'Neue Kontaktanfrage von ' . $payload['name'];
+            $mail->Body = '<h2>Aurora Kontakt</h2>' .
+                '<p><strong>Name:</strong> ' . $payload['name'] . '</p>' .
+                '<p><strong>E-Mail:</strong> ' . $payload['email'] . '</p>' .
+                '<p><strong>Nachricht:</strong><br>' . nl2br($payload['message']) . '</p>' .
+                '<hr><small>Gesendet am ' . $payload['date'] . ' | IP ' . $payload['ip'] . '</small>';
+            $mail->send();
+        } catch (Exception $e) {
+            error_log('Mail error: ' . $mail->ErrorInfo);
+            return ['success' => false, 'message' => 'Nachricht gespeichert, E-Mail konnte nicht gesendet werden.'];
+        }
+
+        return ['success' => true, 'message' => 'Vielen Dank! Wir melden uns zeitnah.'];
+    }
+}
+
+class AdminManager
+{
+    public function isAdmin(): bool
+    {
+        return isset($_SESSION['admin']) && $_SESSION['admin'] === true;
+    }
+
+    public function login(string $username, string $password): bool
+    {
+        if ($username === 'admin' && $password === 'sonne4000$$$$Q') {
+            $_SESSION['admin'] = true;
+            return true;
+        }
+        return false;
+    }
+}
+
+$languageManager = new LanguageManager();
+$locale = $languageManager->getCurrentLocale();
+$webcamManager = new WebcamManager();
+$calendarManager = new VisualCalendarManager();
+$guestbookManager = new GuestbookManager();
+$contactManager = new ContactManager();
+$adminManager = new AdminManager();
+
+if (isset($_GET['download_video']) && $_GET['download_video'] === 'latest') {
+    $latest = $webcamManager->getLatestVideo();
+    if ($latest && file_exists($latest)) {
+        header('Content-Description: File Transfer');
+        header('Content-Type: application/octet-stream');
+        header('Content-Disposition: attachment; filename="' . basename($latest) . '"');
+        header('Content-Length: ' . filesize($latest));
+        readfile($latest);
+        exit;
+    }
+    echo 'Kein Video gefunden.';
+    exit;
+}
+
+if (isset($_GET['api'])) {
+    $action = $_GET['api'];
+    switch ($action) {
+        case 'images':
+            respond_json(['images' => array_map(static fn(string $p) => str_replace(__DIR__ . '/', '', $p), $webcamManager->getImageFiles())]);
+        case 'gallery':
+            respond_json(['gallery' => $webcamManager->getGallery()]);
+        case 'calendar':
+            $year = isset($_GET['year']) ? (int) $_GET['year'] : (int) date('Y');
+            $month = isset($_GET['month']) ? (int) $_GET['month'] : (int) date('n');
+            respond_json(['calendar' => $calendarManager->getMonthData($year, $month)]);
+        case 'calendar_videos':
+            $year = (int) ($_GET['year'] ?? date('Y'));
+            $month = (int) ($_GET['month'] ?? date('n'));
+            $day = (int) ($_GET['day'] ?? date('j'));
+            respond_json(['videos' => $calendarManager->getVideosForDate($year, $month, $day)]);
+        case 'guestbook':
+            respond_json(['entries' => $guestbookManager->getEntries(50)]);
+        case 'stream_stats':
+            respond_json(['stats' => $webcamManager->getStreamStats()]);
+        default:
+            respond_json(['message' => 'Unbekannte API-Anfrage.'], 404);
+    }
+}
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $action = $_POST['action'] ?? '';
+    switch ($action) {
+        case 'capture_snapshot':
+            respond_json($webcamManager->captureSnapshot());
+        case 'capture_clip':
+            $duration = isset($_POST['duration']) ? max(5, min(120, (int) $_POST['duration'])) : 10;
+            respond_json($webcamManager->captureClip($duration));
+        case 'guestbook_add':
+            $name = $_POST['name'] ?? '';
+            $message = $_POST['message'] ?? '';
+            $rating = isset($_POST['rating']) ? (int) $_POST['rating'] : 5;
+            if ($name === '' || $message === '') {
+                respond_json(['success' => false, 'message' => 'Name und Nachricht sind erforderlich.'], 422);
+            }
+            respond_json(['success' => true, 'entry' => $guestbookManager->addEntry($name, $message, $rating)]);
+        case 'contact_send':
+            $name = $_POST['name'] ?? '';
+            $email = $_POST['email'] ?? '';
+            $message = $_POST['message'] ?? '';
+            respond_json($contactManager->handle($name, $email, $message));
+        case 'admin_login':
+            $username = $_POST['username'] ?? '';
+            $password = $_POST['password'] ?? '';
+            respond_json(['success' => $adminManager->login($username, $password)]);
+        case 'set_language':
+            $_SESSION['lang'] = $_POST['language'] ?? 'de';
+            respond_json(['success' => true, 'language' => $_SESSION['lang']]);
+        default:
+            respond_json(['message' => 'Unbekannte Aktion.'], 400);
+    }
+}
+
+$translations = $languageManager->getAllTranslations();
+?>
+<!DOCTYPE html>
+<html lang="<?= htmlspecialchars($locale) ?>">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title><?= htmlspecialchars($languageManager->get('title', $locale)) ?></title>
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
+    <script src="https://cdn.jsdelivr.net/npm/hls.js@1"></script>
+    <style>
+        :root {
+            --sunrise-100: #fff9db;
+            --sunrise-200: #ffe782;
+            --sunrise-300: #ffcf5c;
+            --sunrise-400: #f9b233;
+            --sunrise-500: #f2921d;
+            --sky-500: #2c7be5;
+            --text-primary: #2c2c2c;
+            --text-secondary: #4c4c4c;
+            --card-bg: rgba(255, 255, 255, 0.85);
+            --shadow: 0 25px 45px rgba(255, 204, 0, 0.15);
+            --radius-lg: 24px;
+            --radius-md: 18px;
+            color-scheme: light;
+        }
+
+        * {
+            box-sizing: border-box;
+        }
+
+        body {
+            margin: 0;
+            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+            background: linear-gradient(135deg, var(--sunrise-200), var(--sunrise-500));
+            min-height: 100vh;
+            color: var(--text-primary);
+            display: flex;
+            flex-direction: column;
+        }
+
+        header {
+            padding: 48px 5vw 32px;
+            text-align: center;
+            color: var(--text-primary);
+        }
+
+        header h1 {
+            font-size: clamp(2.5rem, 5vw, 3.75rem);
+            margin: 0;
+            letter-spacing: -1px;
+            text-shadow: 0 12px 45px rgba(0,0,0,0.2);
+        }
+
+        header p {
+            margin: 16px auto 0;
+            max-width: 640px;
+            font-size: 1.1rem;
+            color: rgba(40,40,40,0.85);
+        }
+
+        main {
+            flex: 1;
+            display: grid;
+            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
+            gap: 32px;
+            padding: 0 5vw 80px;
+        }
+
+        section {
+            background: var(--card-bg);
+            backdrop-filter: blur(20px);
+            border-radius: var(--radius-lg);
+            padding: 24px 28px;
+            box-shadow: var(--shadow);
+        }
+
+        .hero-section {
+            grid-column: 1 / -1;
+            display: grid;
+            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+            gap: 24px;
+            align-items: start;
+        }
+
+        .video-wrapper {
+            position: relative;
+            background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.6));
+            border-radius: var(--radius-lg);
+            overflow: hidden;
+            box-shadow: 0 30px 60px rgba(255, 165, 0, 0.25);
+        }
+
+        #webcamPlayer {
+            width: 100%;
+            aspect-ratio: 16/9;
+            display: block;
+            background: #000;
+        }
+
+        .player-controls {
+            display: flex;
+            flex-wrap: wrap;
+            gap: 12px;
+            margin-top: 18px;
+        }
+
+        .control-btn {
+            flex: 1 1 160px;
+            display: inline-flex;
+            align-items: center;
+            justify-content: center;
+            gap: 10px;
+            padding: 14px 18px;
+            border-radius: var(--radius-md);
+            border: none;
+            font-weight: 600;
+            letter-spacing: 0.01em;
+            color: #1f1f1f;
+            cursor: pointer;
+            background: linear-gradient(135deg, var(--sunrise-300), var(--sunrise-500));
+            box-shadow: 0 16px 35px rgba(242, 146, 29, 0.2);
+            transition: transform 0.18s ease, box-shadow 0.18s ease;
+        }
+
+        .control-btn.secondary {
+            background: rgba(255, 255, 255, 0.95);
+            border: 1px solid rgba(0,0,0,0.06);
+        }
+
+        .control-btn:hover {
+            transform: translateY(-3px);
+            box-shadow: 0 25px 45px rgba(242, 146, 29, 0.25);
+        }
+
+        .meta-info {
+            display: grid;
+            gap: 16px;
+        }
+
+        .meta-card {
+            background: rgba(255,255,255,0.95);
+            border-radius: var(--radius-md);
+            padding: 18px;
+            box-shadow: inset 0 0 0 1px rgba(255, 204, 0, 0.2);
+        }
+
+        .meta-card h3 {
+            margin: 0 0 8px;
+            font-size: 1.05rem;
+            display: flex;
+            justify-content: space-between;
+        }
+
+        .qr-wrapper {
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            gap: 10px;
+        }
+
+        .qr-wrapper img {
+            width: 160px;
+            height: 160px;
+            border-radius: 12px;
+            box-shadow: 0 12px 24px rgba(0,0,0,0.12);
+            background: white;
+            padding: 6px;
+        }
+
+        .qr-wrapper small {
+            text-align: center;
+            color: rgba(0,0,0,0.6);
+        }
+
+        .badge {
+            display: inline-flex;
+            align-items: center;
+            gap: 6px;
+            background: rgba(44, 123, 229, 0.12);
+            color: var(--sky-500);
+            padding: 6px 12px;
+            border-radius: 999px;
+            font-size: 0.85rem;
+            font-weight: 600;
+        }
+
+        .media-grid {
+            display: grid;
+            gap: 12px;
+            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
+        }
+
+        .media-grid img {
+            width: 100%;
+            border-radius: 14px;
+            aspect-ratio: 16/9;
+            object-fit: cover;
+            box-shadow: 0 12px 22px rgba(0,0,0,0.15);
+        }
+
+        .calendar-grid {
+            display: grid;
+            grid-template-columns: repeat(7, 1fr);
+            gap: 10px;
+            margin-top: 16px;
+        }
+
+        .calendar-day {
+            padding: 12px 10px;
+            text-align: center;
+            border-radius: 16px;
+            background: rgba(255, 255, 255, 0.85);
+            min-height: 72px;
+            display: flex;
+            flex-direction: column;
+            justify-content: space-between;
+            font-weight: 600;
+            transition: transform 0.18s ease, box-shadow 0.18s ease;
+            cursor: pointer;
+        }
+
+        .calendar-day.has-video {
+            background: rgba(255, 255, 255, 0.95);
+            box-shadow: inset 0 0 0 2px rgba(242, 146, 29, 0.45);
+        }
+
+        .calendar-day.selected {
+            background: var(--sunrise-400);
+            color: white;
+            transform: translateY(-4px);
+            box-shadow: 0 12px 24px rgba(242, 146, 29, 0.3);
+        }
+
+        .calendar-day .count {
+            font-size: 0.75rem;
+            color: rgba(0,0,0,0.6);
+        }
+
+        form {
+            display: grid;
+            gap: 12px;
+        }
+
+        input, textarea, select {
+            border-radius: 14px;
+            border: 1px solid rgba(0,0,0,0.08);
+            padding: 12px 14px;
+            background: rgba(255,255,255,0.95);
+            font-size: 1rem;
+        }
+
+        textarea {
+            min-height: 140px;
+            resize: vertical;
+        }
+
+        .guestbook-entry {
+            padding: 16px 18px;
+            border-radius: 18px;
+            background: rgba(255,255,255,0.9);
+            box-shadow: inset 0 0 0 1px rgba(255, 204, 0, 0.2);
+        }
+
+        .language-switch {
+            display: flex;
+            gap: 10px;
+            flex-wrap: wrap;
+        }
+
+        .language-switch button {
+            border: none;
+            background: rgba(255,255,255,0.85);
+            padding: 8px 14px;
+            border-radius: 999px;
+            cursor: pointer;
+            font-weight: 600;
+            box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
+        }
+
+        footer {
+            text-align: center;
+            padding: 32px 5vw 48px;
+            color: rgba(0,0,0,0.75);
+            font-size: 0.9rem;
+        }
+
+        @media (max-width: 768px) {
+            header {
+                padding-top: 36px;
+            }
+            .hero-section {
+                grid-template-columns: 1fr;
+            }
+        }
+    </style>
+</head>
+<body>
+<header>
+    <h1><?= htmlspecialchars($languageManager->get('welcome', $locale)) ?></h1>
+    <p><?= htmlspecialchars($languageManager->get('subline', $locale)) ?></p>
+</header>
+
+<main>
+    <section class="hero-section">
+        <div class="video-wrapper">
+            <video id="webcamPlayer" playsinline muted></video>
+            <div class="player-controls">
+                <button class="control-btn" data-action="screenshot">
+                    📸 <?= htmlspecialchars($languageManager->get('screenshot', $locale)) ?>
+                </button>
+                <button class="control-btn" data-action="clip">
+                    🎬 <?= htmlspecialchars($languageManager->get('clip', $locale)) ?>
+                </button>
+                <a class="control-btn secondary" href="?download_video=latest">
+                    ⬇️ <?= htmlspecialchars($languageManager->get('download', $locale)) ?>
+                </a>
+                <button class="control-btn secondary" data-action="pip">
+                    📺 <?= htmlspecialchars($languageManager->get('pip', $locale)) ?>
+                </button>
+                <button class="control-btn secondary" data-action="share">
+                    ☀️ <?= htmlspecialchars($languageManager->get('share', $locale)) ?>
+                </button>
+            </div>
+        </div>
+        <div class="meta-info">
+            <div class="meta-card">
+                <h3>
+                    <span><?= htmlspecialchars($languageManager->get('stats', $locale)) ?></span>
+                    <span class="badge" id="streamQuality">--</span>
+                </h3>
+                <p id="streamLatency" style="margin: 0; font-size: 0.95rem;">
+                    --
+                </p>
+                <small id="streamUpdated" style="color: rgba(0,0,0,0.55);"></small>
+            </div>
+            <div class="meta-card">
+                <h3>
+                    <span><?= htmlspecialchars($languageManager->get('language', $locale)) ?></span>
+                </h3>
+                <div class="language-switch" id="languageSwitch">
+                    <?php foreach ($translations as $code => $values): ?>
+                        <button type="button" data-lang="<?= htmlspecialchars($code) ?>" <?= $code === $locale ? 'style="background: var(--sunrise-400); color: white;"' : '' ?>><?= strtoupper($code) ?></button>
+                    <?php endforeach; ?>
+                </div>
+            </div>
+            <div class="meta-card">
+                <h3><?= htmlspecialchars($languageManager->get('gallery', $locale)) ?></h3>
+                <div class="media-grid" id="imageGrid"></div>
+            </div>
+            <div class="meta-card">
+                <h3><?= htmlspecialchars($languageManager->get('starlink', $locale)) ?></h3>
+                <div class="qr-wrapper">
+                    <a href="https://www.starlink.com/" target="_blank" rel="noopener noreferrer">
+                        <img src="https://api.qrserver.com/v1/create-qr-code/?size=200x200&amp;data=https%3A%2F%2Fwww.starlink.com%2F" alt="<?= htmlspecialchars($languageManager->get('starlink_alt', $locale)) ?>">
+                    </a>
+                    <small><?= htmlspecialchars($languageManager->get('starlink_caption', $locale)) ?></small>
+                </div>
+            </div>
+        </div>
+    </section>
+
+    <section>
+        <h2><?= htmlspecialchars($languageManager->get('calendar_title', $locale)) ?></h2>
+        <div class="calendar-grid" id="calendarGrid"></div>
+        <div id="calendarVideos" style="margin-top: 18px; display: grid; gap: 10px;"></div>
+    </section>
+
+    <section>
+        <h2><?= htmlspecialchars($languageManager->get('guestbook', $locale)) ?></h2>
+        <form id="guestbookForm">
+            <input type="hidden" name="action" value="guestbook_add">
+            <label>
+                <?= htmlspecialchars($languageManager->get('name', $locale)) ?>
+                <input type="text" name="name" required>
+            </label>
+            <label>
+                <?= htmlspecialchars($languageManager->get('comment', $locale)) ?>
+                <textarea name="message" required></textarea>
+            </label>
+            <label>
+                <?= htmlspecialchars($languageManager->get('rating', $locale)) ?>
+                <select name="rating">
+                    <option value="5">★★★★★</option>
+                    <option value="4">★★★★☆</option>
+                    <option value="3">★★★☆☆</option>
+                    <option value="2">★★☆☆☆</option>
+                    <option value="1">★☆☆☆☆</option>
+                </select>
+            </label>
+            <button class="control-btn" type="submit" style="width: fit-content;">
+                ✅ <?= htmlspecialchars($languageManager->get('add_entry', $locale)) ?>
+            </button>
+        </form>
+        <div id="guestbookEntries" style="margin-top: 18px; display: grid; gap: 14px;"></div>
+    </section>
+
+    <section>
+        <h2><?= htmlspecialchars($languageManager->get('contact', $locale)) ?></h2>
+        <form id="contactForm">
+            <input type="hidden" name="action" value="contact_send">
+            <label>
+                <?= htmlspecialchars($languageManager->get('name', $locale)) ?>
+                <input type="text" name="name" required>
+            </label>
+            <label>
+                <?= htmlspecialchars($languageManager->get('email', $locale)) ?>
+                <input type="email" name="email" required>
+            </label>
+            <label>
+                <?= htmlspecialchars($languageManager->get('message', $locale)) ?>
+                <textarea name="message" required></textarea>
+            </label>
+            <button class="control-btn" type="submit" style="width: fit-content;">
+                ✉️ <?= htmlspecialchars($languageManager->get('send', $locale)) ?>
+            </button>
+        </form>
+        <div id="contactFeedback" style="margin-top: 14px; font-weight: 600;"></div>
+    </section>
+</main>
+
+<footer>
+    © <?= date('Y') ?> Aurora Weather Livecam · <?= htmlspecialchars($languageManager->get('privacy', $locale)) ?> · <a href="tiny.php" style="color: inherit; font-weight: 600;">tiny view</a>
+</footer>
+
+<script type="module">
+    const video = document.querySelector('#webcamPlayer');
+    const hlsSource = <?= json_encode($webcamManager->getVideoSrc()) ?>;
+    const isHlsNative = video.canPlayType('application/vnd.apple.mpegurl');
+    const controlButtons = document.querySelectorAll('.control-btn[data-action]');
+    const imageGrid = document.querySelector('#imageGrid');
+    const calendarGrid = document.querySelector('#calendarGrid');
+    const calendarVideos = document.querySelector('#calendarVideos');
+    const guestbookContainer = document.querySelector('#guestbookEntries');
+    const guestbookForm = document.querySelector('#guestbookForm');
+    const contactForm = document.querySelector('#contactForm');
+    const contactFeedback = document.querySelector('#contactFeedback');
+    const streamQuality = document.querySelector('#streamQuality');
+    const uploadBase = <?php echo json_encode('uploads/'); ?>;
+    const videoBase = <?php echo json_encode('videos/'); ?>;
+    const streamLatency = document.querySelector('#streamLatency');
+    const streamUpdated = document.querySelector('#streamUpdated');
+
+    async function fetchJSON(url, options = {}) {
+        const response = await fetch(url, options);
+        if (!response.ok) {
+            throw new Error('Request failed');
+        }
+        return response.json();
+    }
+
+    async function populateImages() {
+        try {
+            const data = await fetchJSON('?api=images');
+            imageGrid.innerHTML = data.images.map(src => `<img src="${src}" loading="lazy" alt="Aurora capture">`).join('');
+        } catch (error) {
+            imageGrid.innerHTML = '<small>Keine Bilder verfügbar.</small>';
+        }
+    }
+
+    async function populateCalendar(year = new Date().getFullYear(), month = new Date().getMonth() + 1) {
+        const data = await fetchJSON(`?api=calendar&year=${year}&month=${month}`);
+        const { calendar } = data;
+        calendarGrid.innerHTML = '';
+        const firstDay = new Date(year, month - 1, 1).getDay();
+        const startIndex = firstDay === 0 ? 6 : firstDay - 1;
+        for (let i = 0; i < startIndex; i++) {
+            const placeholder = document.createElement('div');
+            calendarGrid.appendChild(placeholder);
+        }
+        calendar.days.forEach(day => {
+            const el = document.createElement('div');
+            el.className = `calendar-day${day.hasVideos ? ' has-video' : ''}`;
+            el.dataset.day = day.day;
+            el.innerHTML = `<span>${day.day}</span><span class="count">${day.count || ''}</span>`;
+            el.addEventListener('click', () => {
+                document.querySelectorAll('.calendar-day.selected').forEach(sel => sel.classList.remove('selected'));
+                el.classList.add('selected');
+                populateCalendarVideos(year, month, day.day);
+            });
+            calendarGrid.appendChild(el);
+        });
+    }
+
+    async function populateCalendarVideos(year, month, day) {
+        const data = await fetchJSON(`?api=calendar_videos&year=${year}&month=${month}&day=${day}`);
+        if (!data.videos.length) {
+            calendarVideos.innerHTML = '<small>Keine Videos für diesen Tag.</small>';
+            return;
+        }
+        calendarVideos.innerHTML = data.videos.map(video => `
+            <div class="guestbook-entry">
+                <strong>${video.time} Uhr</strong>
+                <span>${(video.size / (1024 * 1024)).toFixed(2)} MB</span>
+                <a class="control-btn secondary" style="margin-top:10px; text-decoration:none;" href="${videoBase + video.file}" download>Download</a>
+            </div>
+        `).join('');
+    }
+
+    async function populateGuestbook() {
+        const data = await fetchJSON('?api=guestbook');
+        guestbookContainer.innerHTML = data.entries.map(entry => `
+            <div class="guestbook-entry">
+                <strong>${entry.name}</strong>
+                <span>${'★'.repeat(entry.rating)}${'☆'.repeat(5 - entry.rating)}</span>
+                <p>${entry.message}</p>
+                <small>${entry.created}</small>
+            </div>
+        `).join('');
+    }
+
+    async function refreshStreamStats() {
+        const data = await fetchJSON('?api=stream_stats');
+        streamQuality.textContent = `${(data.stats.bitrate / 1000).toFixed(1)} Mbps`;
+        streamLatency.textContent = `Latency: ${data.stats.latency} s`;
+        streamUpdated.textContent = `Updated ${data.stats.updated}`;
+    }
+
+    function initPlayer() {
+        if (isHlsNative) {
+            video.src = hlsSource;
+            video.play().catch(() => {});
+            return;
+        }
+        if (window.Hls && window.Hls.isSupported()) {
+            const hls = new Hls({
+                enableWorker: true,
+                liveSyncDurationCount: 3,
+                maxLiveSyncPlaybackRate: 1.2,
+            });
+            hls.loadSource(hlsSource);
+            hls.attachMedia(video);
+            hls.on(Hls.Events.MANIFEST_PARSED, () => video.play().catch(() => {}));
+        }
+    }
+
+    controlButtons.forEach(btn => {
+        btn.addEventListener('click', async () => {
+            const action = btn.dataset.action;
+            if (action === 'screenshot') {
+                btn.disabled = true;
+                const response = await fetchJSON('', {
+                    method: 'POST',
+                    body: new URLSearchParams({ action: 'capture_snapshot' })
+                }).catch(() => null);
+                if (response?.success) {
+                    window.location.href = uploadBase + response.file;
+                }
+                btn.disabled = false;
+            }
+            if (action === 'clip') {
+                btn.disabled = true;
+                const response = await fetchJSON('', {
+                    method: 'POST',
+                    body: new URLSearchParams({ action: 'capture_clip', duration: 12 })
+                }).catch(() => null);
+                if (response?.success) {
+                    window.location.href = uploadBase + response.file;
+                }
+                btn.disabled = false;
+            }
+            if (action === 'pip' && document.pictureInPictureEnabled) {
+                if (document.pictureInPictureElement) {
+                    document.exitPictureInPicture();
+                } else {
+                    video.requestPictureInPicture().catch(() => {});
+                }
+            }
+            if (action === 'share' && navigator.share) {
+                navigator.share({
+                    title: document.title,
+                    text: 'Aurora Weather Livecam',
+                    url: window.location.href
+                }).catch(() => {});
+            }
+        });
+    });
+
+    guestbookForm.addEventListener('submit', async (event) => {
+        event.preventDefault();
+        const data = new FormData(guestbookForm);
+        const response = await fetchJSON('', {
+            method: 'POST',
+            body: new URLSearchParams(data)
+        }).catch(() => null);
+        if (response?.success) {
+            guestbookForm.reset();
+            populateGuestbook();
+        }
+    });
+
+    contactForm.addEventListener('submit', async (event) => {
+        event.preventDefault();
+        const formData = new FormData(contactForm);
+        const response = await fetchJSON('', {
+            method: 'POST',
+            body: new URLSearchParams(formData)
+        }).catch(() => null);
+        if (response) {
+            contactFeedback.textContent = response.message;
+            contactFeedback.style.color = response.success ? 'green' : 'red';
+            if (response.success) {
+                contactForm.reset();
+            }
+        }
+    });
+
+    document.querySelectorAll('#languageSwitch button').forEach(button => {
+        button.addEventListener('click', async () => {
+            const lang = button.dataset.lang;
+            await fetchJSON('', {
+                method: 'POST',
+                body: new URLSearchParams({ action: 'set_language', language: lang })
+            });
+            location.reload();
+        });
+    });
+
+    initPlayer();
+    populateImages();
+    populateCalendar();
+    populateGuestbook();
+    refreshStreamStats();
+    setInterval(refreshStreamStats, 15000);
+</script>
+</body>
+</html>