diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 42af6c7..6bf766d 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -8,6 +8,107 @@ import TagsPage from "./pages/TagsPage";
 
 const APP_TITLE = "da packste dich weg";
 
+function Navigation() {
+  const location = useLocation();
+  const navItems = [
+    { to: "/trips", label: "Trips" },
+    { to: "/items", label: "Items" },
+    { to: "/tags", label: "Tags" },
+  ];
+  const [menuOpen, setMenuOpen] = useState(false);
+
+  const navigate = useNavigate();
+  async function goToCurrentTrip() {
+    try {
+      const id = await getNextTripId();
+      navigate(`/trips/${id}`);
+    } catch {
+      alert("Kein anstehender Trip gefunden");
+    }
+  }
+
+  const isTripDetail = /^\/trips\/[^/]+$/.test(location.pathname);
+
+  return (
+    <nav className="mb-2 flex items-center gap-2 bg-white/80 backdrop-blur border-b border-gray-200 px-2 py-2 rounded-xl shadow-sm relative">
+      <button
+        className="text-2xl font-extrabold text-blue-700 tracking-tight mr-2 select-none hover:underline bg-transparent p-0"
+        style={{ background: "none", border: "none" }}
+        onClick={goToCurrentTrip}
+        title="Zum aktuellen Trip"
+      >
+        {APP_TITLE}
+      </button>
+      {/* Hamburger für kleine Screens */}
+      <button
+        className="sm:hidden ml-auto px-2 py-1 rounded text-blue-700 border border-blue-200"
+        onClick={() => setMenuOpen((v) => !v)}
+        aria-label="Menü öffnen"
+      >
+        <svg width="28" height="28" viewBox="0 0 28 28" fill="none">
+          <rect y="6" width="28" height="2.5" rx="1.25" fill="#2563eb"/>
+          <rect y="13" width="28" height="2.5" rx="1.25" fill="#2563eb"/>
+          <rect y="20" width="28" height="2.5" rx="1.25" fill="#2563eb"/>
+        </svg>
+      </button>
+      {/* Links für große Screens */}
+      <div className="hidden sm:flex items-center gap-2 ml-auto">
+        {navItems.map((item) => {
+          const isActive =
+            !isTripDetail && location.pathname.startsWith(item.to);
+          return (
+            <Link
+              key={item.to}
+              to={item.to}
+              className={
+                "px-3 py-1 rounded font-medium transition " +
+                (isActive
+                  ? "bg-blue-600 text-white shadow"
+                  : "text-blue-700 hover:bg-blue-100 hover:text-blue-900")
+              }
+              style={{
+                boxShadow: isActive ? "0 2px 8px 0 rgba(37,99,235,0.08)" : undefined,
+                border: isActive ? "2px solid #2563eb" : undefined,
+              }}
+              onClick={() => setMenuOpen(false)}
+            >
+              {item.label}
+            </Link>
+          );
+        })}
+      </div>
+      {/* Dropdown für kleine Screens */}
+      {menuOpen && (
+        <div className="absolute top-full left-0 w-full bg-white border-t border-blue-200 shadow-md z-50 flex flex-col sm:hidden">
+          {navItems.map((item) => {
+            const isActive =
+              !isTripDetail && location.pathname.startsWith(item.to);
+            return (
+              <Link
+                key={item.to}
+                to={item.to}
+                className={
+                  "px-4 py-3 border-b font-medium transition " +
+                  (isActive
+                    ? "bg-blue-600 text-white shadow"
+                    : "text-blue-700 hover:bg-blue-100 hover:text-blue-900")
+                }
+                style={{
+                  boxShadow: isActive ? "0 2px 8px 0 rgba(37,99,235,0.08)" : undefined,
+                  border: isActive ? "2px solid #2563eb" : undefined,
+                }}
+                onClick={() => setMenuOpen(false)}
+              >
+                {item.label}
+              </Link>
+            );
+          })}
+        </div>
+      )}
+    </nav>
+  );
+}
+
 function NextTripRedirect({ trips }: { trips: any[] }) {
   const [nextTripId, setNextTripId] = React.useState<string | null>(null);
   const [error, setError] = React.useState<string | null>(null);
@@ -23,74 +124,6 @@ function NextTripRedirect({ trips }: { trips: any[] }) {
   return <Navigate to={`/trips/${nextTripId}`} replace />;
 }
 
-function Navigation() {
-  const location = useLocation();
-  const navItems = [
-    { to: "/trips", label: "Trips" },
-    { to: "/items", label: "Items" },
-    { to: "/tags", label: "Tags" },
-  ];
-
-  // Navigation für den Titel-Link
-  const navigate = useNavigate();
-  async function goToCurrentTrip() {
-    try {
-      const id = await getNextTripId();
-      navigate(`/trips/${id}`);
-    } catch {
-      alert("Kein anstehender Trip gefunden");
-    }
-  }
-
-  // Prüfe, ob ein einzelner Trip angezeigt wird
-  const isTripDetail = /^\/trips\/[^/]+$/.test(location.pathname);
-
-  return (
-    <nav className="mb-2 flex items-center gap-4 bg-white/80 backdrop-blur border-b border-gray-200 px-2 py-2 rounded-xl shadow-sm">
-      <button
-        className="text-2xl font-extrabold text-blue-700 tracking-tight mr-4 select-none hover:underline bg-transparent p-0"
-        style={{ background: "none", border: "none" }}
-        onClick={goToCurrentTrip}
-        title="Zum aktuellen Trip"
-      >
-        {APP_TITLE}
-      </button>
-      {navItems.map((item) => {
-        // Trips ist NICHT aktiv, wenn ein einzelner Trip angezeigt wird
-        const isActive =
-          !isTripDetail && location.pathname.startsWith(item.to);
-        return (
-          <Link
-            key={item.to}
-            to={item.to}
-            className={
-              "px-4 py-2 rounded font-medium transition " +
-              (isActive
-                ? "bg-blue-600 text-white shadow"
-                : "text-blue-700 hover:bg-blue-100 hover:text-blue-900")
-            }
-            style={{
-              boxShadow: isActive ? "0 2px 8px 0 rgba(37,99,235,0.08)" : undefined,
-              border: isActive ? "2px solid #2563eb" : undefined,
-            }}
-          >
-            {item.label}
-          </Link>
-        );
-      })}
-      <button
-        className="ml-auto bg-gray-100 text-gray-700 px-4 py-2 rounded hover:bg-gray-200 transition"
-        onClick={async () => {
-          await getSeed();
-          window.location.reload();
-        }}
-      >
-        Seed-Daten erzeugen
-      </button>
-    </nav>
-  );
-}
-
 export default function App() {
   const [trips, setTrips] = useState<any[]>([]);
   const [dbError, setDbError] = useState<string | null>(null);