diff --git a/frontend/src/App.css b/frontend/src/App.css
index 7b53bf9..33d3253 100644
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -6,3 +6,7 @@ body,
   height: 100%;
   margin: 0;
 }
+
+body.success-bg {
+  background: linear-gradient(135deg, #0f172a, #111827);
+}
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index b14f593..ece00e3 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -2,15 +2,21 @@ import "./App.css";
 import { BrowserRouter, Route, Routes } from "react-router-dom";
 import { MainForm } from "./pages/MainForm";
 import { SuccessPage } from "./pages/SuccessPage";
+import { PageFooter } from "./components/PageFooter";
 
 function App() {
   return (
-    <BrowserRouter>
-      <Routes>
-        <Route path="/" element={<MainForm />} />
-        <Route path="/success" element={<SuccessPage />} />
-      </Routes>
-    </BrowserRouter>
+    <div className="min-h-screen flex flex-col">
+      <BrowserRouter>
+        <main className="flex-1 flex">
+          <Routes>
+            <Route path="/" element={<MainForm />} />
+            <Route path="/success" element={<SuccessPage />} />
+          </Routes>
+        </main>
+      </BrowserRouter>
+      <PageFooter />
+    </div>
   );
 }
 
diff --git a/frontend/src/assets/Portfolio-QR-Code.png b/frontend/src/assets/Portfolio-QR-Code.png
new file mode 100644
index 0000000..f3feb29
Binary files /dev/null and b/frontend/src/assets/Portfolio-QR-Code.png differ
diff --git a/frontend/src/components/PageFooter.tsx b/frontend/src/components/PageFooter.tsx
new file mode 100644
index 0000000..27af4be
--- /dev/null
+++ b/frontend/src/components/PageFooter.tsx
@@ -0,0 +1,42 @@
+import { Link, Sheet, Typography } from "@mui/joy";
+import { useTranslation } from "react-i18next";
+import qrCode from "../assets/Portfolio-QR-Code.png";
+
+export const PageFooter = () => {
+  const { t } = useTranslation();
+
+  return (
+    <footer className="w-full mt-auto px-3 pb-3">
+      <Sheet
+        variant="soft"
+        className="mx-auto w-full max-w-3xl rounded-2xl border border-slate-200/70 bg-white/80 backdrop-blur"
+      >
+        <div className="flex flex-col gap-2 p-2.5 sm:p-3">
+          <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+            <Typography
+              level="title-sm"
+              className="text-slate-800 tracking-wide"
+            >
+              {t("footer-headline")}
+              <Link
+                href="https://portfolio-theis.de/"
+                target="_blank"
+                rel="noreferrer"
+                className="ml-2 inline-flex items-center text-slate-700 underline decoration-slate-300 underline-offset-4 hover:text-slate-900"
+              >
+                portfolio-theis.de
+              </Link>
+            </Typography>
+            <Typography level="body-sm" className="text-slate-500">
+              <img
+                src={qrCode}
+                alt="https://portfolio-theis.de/"
+                className="h-20 w-20 rounded-md border border-slate-200 object-contain"
+              />
+            </Typography>
+          </div>
+        </div>
+      </Sheet>
+    </footer>
+  );
+};
diff --git a/frontend/src/pages/MainForm.tsx b/frontend/src/pages/MainForm.tsx
index 2c86891..36a5df2 100644
--- a/frontend/src/pages/MainForm.tsx
+++ b/frontend/src/pages/MainForm.tsx
@@ -184,7 +184,7 @@ export const MainForm = () => {
 
       <QRcodeModal setQRmodal={setQRmodal} QRmodal={QRmodal} />
 
-      <div className="min-h-screen w-full flex items-center justify-center from-slate-100 to-blue-50 p-4">
+      <div className="flex-1 w-full flex items-center justify-center from-slate-100 to-blue-50 p-4">
         <Sheet
           variant="plain"
           className="w-full"
diff --git a/frontend/src/pages/SuccessPage.tsx b/frontend/src/pages/SuccessPage.tsx
index c991964..87ada96 100644
--- a/frontend/src/pages/SuccessPage.tsx
+++ b/frontend/src/pages/SuccessPage.tsx
@@ -16,6 +16,11 @@ export const SuccessPage = () => {
     setTickets(parseInt(params.get("tickets") ?? "0", 10));
     // Small delay so the CSS transition actually plays
     setTimeout(() => setAnimate(true), 100);
+
+    document.body.classList.add("success-bg");
+    return () => {
+      document.body.classList.remove("success-bg");
+    };
   }, []);
 
   useEffect(() => {
@@ -36,7 +41,7 @@ export const SuccessPage = () => {
   });
 
   return (
-    <div className="min-h-screen w-full flex items-center justify-center bg-linear-to-br from-slate-800 to-slate-900 p-4">
+    <div className="flex-1 w-full flex items-center justify-center p-4">
       <Sheet
         variant="plain"
         sx={{
diff --git a/frontend/src/utils/i18n/locales/de/de.json b/frontend/src/utils/i18n/locales/de/de.json
index 185e529..605df4c 100644
--- a/frontend/src/utils/i18n/locales/de/de.json
+++ b/frontend/src/utils/i18n/locales/de/de.json
@@ -33,5 +33,6 @@
     "set-username-text": "Um mit dem Losverkauf zu beginnen, musst du einen Benutzer oben links auswählen.",
     "name-error": "Sie müssen einen Namen eingeben!",
     "email-error": "Sie müssen eine gültige E-Mail Adresse eingeben!",
-    "phone-error": "Sie müssen eine gültige Telefonnummer eingeben!"
+    "phone-error": "Sie müssen eine gültige Telefonnummer eingeben!",
+    "footer-headline": "Dieses System wurde vollständig konzipiert und entwickelt von Theis Gaedigk. - Portfolio: "
 }
\ No newline at end of file
diff --git a/frontend/src/utils/i18n/locales/en/en.json b/frontend/src/utils/i18n/locales/en/en.json
index 24f669e..8c2e961 100644
--- a/frontend/src/utils/i18n/locales/en/en.json
+++ b/frontend/src/utils/i18n/locales/en/en.json
@@ -34,5 +34,6 @@
     "set-username-text": "To start the ticket sale, you must select a user first from the top left.",
     "name-error": "You have to enter a name!",
     "email-error": "You have to enter a valid E-Mail adress!",
-    "phone-error": "You have to enter a vaild phone number!"
+    "phone-error": "You have to enter a vaild phone number!",
+    "footer-headline": "This system was fully designed and developed by Theis Gaedigk. - Portfolio: "
 }
\ No newline at end of file