diff --git a/inc/footer.php b/inc/footer.php
index a297d2a..1bae475 100755
--- a/inc/footer.php
+++ b/inc/footer.php
@@ -1,5 +1,95 @@
-<!-- Bootstrap JS Bundle -->
-<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
+    <!-- Offline Toast -->
+    <div class="toast-container position-fixed bottom-0 end-0 p-3">
+        <div id="offlineToast" class="toast" role="alert">
+            <div class="toast-header">
+                <strong class="me-auto">Keine Verbindung</strong>
+                <button type="button" class="btn-close" data-bs-dismiss="toast"></button>
+            </div>
+            <div class="toast-body">
+                Du bist offline. Einige Funktionen sind eingeschränkt.
+            </div>
+        </div>
+    </div>
 
-</html>
\ No newline at end of file
+    <!-- Bootstrap JS -->
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
+
+    <!-- Service Worker Registration -->
+    <script>
+        // Automatische Update-Erkennung
+        let newWorker;
+
+        if ('serviceWorker' in navigator) {
+            navigator.serviceWorker.register('/sw.js')
+                .then(registration => {
+                    registration.addEventListener('updatefound', () => {
+                        newWorker = registration.installing;
+                        newWorker.addEventListener('statechange', () => {
+                            if (newWorker.state === 'installed' && navigator.serviceWorker.controller) {
+                                // Neues Update verfügbar - zeige Benachrichtigung
+                                showUpdateNotification();
+                            }
+                        });
+                    });
+                });
+
+            // Alle 60 Sekunden auf Updates prüfen
+            setInterval(() => {
+                navigator.serviceWorker.ready.then(registration => {
+                    registration.update();
+                });
+            }, 60000);
+        }
+
+        function showUpdateNotification() {
+            if (confirm('Eine neue Version von DoMiLi ist verfügbar. Jetzt aktualisieren?')) {
+                navigator.serviceWorker.ready.then(registration => {
+                    registration.waiting.postMessage({
+                        action: 'skipWaiting'
+                    });
+                });
+            }
+        }
+
+        // Nachrichten vom Service Worker empfangen
+        navigator.serviceWorker.addEventListener('message', event => {
+            if (event.data.action === 'skipWaiting') {
+                navigator.serviceWorker.controller.postMessage({
+                    action: 'skipWaiting'
+                });
+            }
+        });
+
+        // Seite neu laden wenn neuer Worker aktiv wird
+        let refreshing = false;
+        navigator.serviceWorker.addEventListener('controllerchange', () => {
+            if (!refreshing) {
+                window.location.reload();
+                refreshing = true;
+            }
+        });
+
+        // Offline-Erkennung
+        window.addEventListener('online', function() {
+            document.body.classList.remove('offline');
+            // Toast ausblenden
+            const toastEl = document.getElementById('offlineToast');
+            if (toastEl) {
+                const toast = bootstrap.Toast.getInstance(toastEl);
+                if (toast) toast.hide();
+            }
+        });
+
+        window.addEventListener('offline', function() {
+            document.body.classList.add('offline');
+            // Toast anzeigen
+            const toastEl = document.getElementById('offlineToast');
+            if (toastEl) {
+                const toast = new bootstrap.Toast(toastEl);
+                toast.show();
+            }
+        });
+    </script>
+    </body>
+
+    </html>
\ No newline at end of file