fixed code

- Added lucide-react to package dependencies
- Refactored MainForm to improve form handling and user selection
- Removed SuccessPage component and related logic
- Updated localization files to include new keys for invoice details
- Created interfaces for form data and messages

.gitignore

@@ -155,8 +155,9 @@ backend/public/uploads/
 secrets/
 keys/
 
+# Own files
 ToDo.txt
-
+PayPal-QR-Code.png
 
 # only in development branch
 next-env.d.ts

LICENSE

@@ -0,0 +1,73 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+
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+
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+
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+
+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
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+
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+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
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+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!)  The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.
+
+Copyright 2026 theis.gaedigk
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

README.md

@@ -1,2 +1,164 @@
-# ca-lose
+# CA-Lose
 
+CA-Lose is a small full-stack app for collecting ticket-sale/order form entries.
+
+## Tech stack
+
+![React](https://img.shields.io/badge/React-20232A?logo=react&logoColor=61DAFB)
+![TypeScript](https://img.shields.io/badge/TypeScript-3178C6?logo=typescript&logoColor=fff)
+![Vite](https://img.shields.io/badge/Vite-646CFF?logo=vite&logoColor=fff)
+![Tailwind CSS](https://img.shields.io/badge/Tailwind%20CSS-06B6D4?logo=tailwindcss&logoColor=fff)
+![MUI](https://img.shields.io/badge/MUI-007FFF?logo=mui&logoColor=fff)
+![i18next](https://img.shields.io/badge/i18next-26A69A?logo=i18next&logoColor=fff)
+
+![Node.js](https://img.shields.io/badge/Node.js-339933?logo=node.js&logoColor=fff)
+![Express](https://img.shields.io/badge/Express-000000?logo=express&logoColor=fff)
+![MySQL](https://img.shields.io/badge/MySQL-4479A1?logo=mysql&logoColor=fff)
+
+![Docker](https://img.shields.io/badge/Docker-2496ED?logo=docker&logoColor=fff)
+![Nginx](https://img.shields.io/badge/Nginx-009639?logo=nginx&logoColor=fff)
+
+## Architecture
+
+- **Frontend**: React + TypeScript + Vite (UI uses MUI + Tailwind, i18n via i18next)
+- **Backend**: Node.js + Express (also renders a minimal EJS page at `/`)
+- **Database**: MySQL 8
+
+In production, the frontend is served by **Nginx** and proxies `/backend/*` to the backend container.
+
+## Repos & folders
+
+```
+backend/   # Express API + EJS views
+frontend/  # React app (Vite) + Nginx container
+docker-compose.yml
+docker-compose.prod.yml
+```
+
+## API overview
+
+The backend router is mounted at `/default`:
+
+- `GET /default/users` → returns `{ users: string[] }`
+- `GET /default/confirm-user?username=<name>` → validates user and returns metadata (e.g. next id)
+- `POST /default/new-entry?username=<name>` → stores a new entry in MySQL
+
+## Configuration
+
+### Backend environment variables
+
+The backend reads configuration from environment variables (and can also load a `backend/.env` file via `dotenv`).
+
+- `PORT` (e.g. `8004`)
+- `DB_HOST` (e.g. `ca-lose-mysql` when using Docker Compose)
+- `DB_USER` (e.g. `root`)
+- `DB_PASSWORD`
+- `DB_NAME` (e.g. `ca_lose`)
+
+### Docker Compose environment
+
+Both compose files expect `DB_PASSWORD` to be present in your shell environment or a root `.env` file.
+
+Create a root `.env` (not committed) like:
+
+```env
+DB_PASSWORD=change-me
+```
+
+## Local development
+
+### Option A: Docker Compose (backend + database)
+
+This is the quickest way to get the API + MySQL running.
+
+```bash
+docker compose up --build
+```
+
+What you get:
+
+- Backend: http://localhost:8004
+- MySQL: localhost:3311 (container port 3306)
+
+Note: In `docker-compose.yml` the `frontend` service is currently commented out.
+
+### Option B: Run frontend locally (Vite) + run backend & DB
+
+1. Start DB + backend (Docker):
+
+```bash
+docker compose up --build database backend
+```
+
+2. Start frontend (local Node):
+
+```bash
+cd frontend
+npm ci
+npm run dev
+```
+
+Open the Vite dev server URL (usually http://localhost:5173).
+
+Important:
+
+- During local development (Vite), the frontend currently calls the backend via a hard-coded URL (`http://localhost:8004`).
+- When the frontend is served by the Nginx container, requests are expected to go through the Nginx proxy at `/backend/*` (see `frontend/nginx.conf`). In that setup the frontend should use `/backend/default/...` instead of `http://localhost:8004/...`.
+
+## Database setup
+
+The schema file is in `backend/scheme.sql`.
+
+- The `users` table is required for the user dropdown.
+- The backend creates an entry table dynamically per user and date when calling `GET /default/confirm-user`.
+
+Example (inside MySQL):
+
+```sql
+INSERT INTO users (username, first_name, last_name)
+VALUES ('demo', 'Demo', 'User');
+```
+
+## Production / Deployment
+
+The production compose file builds and runs:
+
+- `frontend` (Nginx)
+- `backend` (Express)
+- `database` (MySQL)
+- optional infrastructure: `dnsmasq` and `wireguard` (wg-easy)
+
+Start it:
+
+```bash
+docker compose -f docker-compose.prod.yml up -d --build
+```
+
+Notes:
+
+- `docker-compose.prod.yml` uses an **external** network called `proxynet`. Create it if it does not exist:
+
+  ```bash
+  docker network create proxynet
+  ```
+
+- The production file assigns static IPs; adjust the subnets/IPs if they conflict with your environment.
+
+## Lint / build
+
+Frontend:
+
+```bash
+cd frontend
+npm run lint
+npm run build
+```
+
+## Troubleshooting
+
+- **Backend does not start / ESM imports**: The backend code uses ESM `import` syntax. Node must treat the backend as an ESM project (commonly by adding `"type": "module"` to `backend/package.json`). Without that, the backend will fail to start (including in Docker).
+- **MySQL timezone mount**: The compose files mount `./mysql-timezone.cnf` to `/etc/mysql/conf.d/timezone.cnf`. Ensure `mysql-timezone.cnf` is a file (not a directory) with valid MySQL config, or remove/adjust the mount.
+
+## License
+
+Licensed under the Apache License 2.0. See [LICENSE](LICENSE).

backend/routes/default/frontend.data.js

@@ -40,7 +40,7 @@ export const confirmUser = async (username) => {
     console.log(tableName);
 
     const [createTable] = await pool.query(
-      `CREATE TABLE IF NOT EXISTS ${tableName} (
+      `CREATE TABLE IF NOT EXISTS ?? (
         id INT AUTO_INCREMENT PRIMARY KEY,
         Vorname VARCHAR(100) NOT NULL,
         Nachname Varchar(100) NOT NULL,
@@ -56,14 +56,16 @@ export const confirmUser = async (username) => {
         Plz_Ort Varchar(100),
         Zahlungsmethode Varchar(100),
         created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-      )`
+      )`,
+      [tableName],
     );
 
     if (createTable) {
       let nextID;
       const getNextID = async () => {
         const [rows] = await pool.query(
-          `SELECT id FROM ${tableName} ORDER BY id DESC LIMIT 1`
+          `SELECT id FROM ?? ORDER BY id DESC LIMIT 1`,
+          [tableName],
         );
         nextID = rows.length > 0 ? rows[0].id + 1 : 1;
       };
@@ -87,8 +89,9 @@ export const newEntry = async (formData, username) => {
   const tableName = confirmation.tableName;
 
   const [result] = await pool.query(
-    `INSERT INTO ${tableName} (Vorname, Nachname, EMail, Telefonnummer, Lose, Firmenname, Vorname_Geschaeftlich, Nachname_Geschaeftlich, EMail_Geschaeftlich, Telefonnummer_Geschaeftlich, Strasse_Hausnr, Plz_Ort, Zahlungsmethode) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+    `INSERT INTO ?? (Vorname, Nachname, EMail, Telefonnummer, Lose, Firmenname, Vorname_Geschaeftlich, Nachname_Geschaeftlich, EMail_Geschaeftlich, Telefonnummer_Geschaeftlich, Strasse_Hausnr, Plz_Ort, Zahlungsmethode) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
     [
+      tableName,
       formData.firstName,
       formData.lastName,
       formData.email,
@@ -102,7 +105,7 @@ export const newEntry = async (formData, username) => {
       formData.street,
       formData.postalCode,
       formData.paymentMethod,
-    ]
+    ],
   );
 
   return { success: true, insertId: result.insertId };

backend/scheme.sql

@@ -6,6 +6,7 @@ CREATE TABLE users (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 );
 
+/* This scheme does not have to be implemented manually. It always will be generated by the backend */
 CREATE TABLE xx_DD_MM_YYYY (
     id INT AUTO_INCREMENT PRIMARY KEY,
     Vorname VARCHAR(100) NOT NULL,

docker-compose.prod.yml

@@ -1,115 +0,0 @@
-services:
-  frontend:
-    container_name: ca-lose-frontend
-    hostname: lose-verkaufen
-    build: ./frontend
-    networks:
-      ca-lose-internal:
-        ipv4_address: 172.25.0.2
-      proxynet:
-        ipv4_address: 172.20.0.61
-    restart: unless-stopped
-
-  backend:
-    container_name: ca-lose-backend
-    hostname: backend
-    build: ./backend
-    environment:
-      NODE_ENV: production
-      DB_HOST: ca-lose-mysql
-      DB_USER: root
-      DB_PASSWORD: ${DB_PASSWORD}
-      DB_NAME: ca_lose
-    depends_on:
-      - database
-    networks:
-      ca-lose-internal:
-        ipv4_address: 172.25.0.3
-    restart: unless-stopped
-
-  database:
-    container_name: ca-lose-mysql
-    hostname: database
-    image: mysql:8.0
-    restart: unless-stopped
-    environment:
-      MYSQL_ROOT_PASSWORD: ${DB_PASSWORD}
-      MYSQL_DATABASE: ca_lose
-      TZ: Europe/Berlin
-    volumes:
-      - ca-lose_mysql:/var/lib/mysql
-      - ./mysql-timezone.cnf:/etc/mysql/conf.d/timezone.cnf:ro
-    networks:
-      ca-lose-internal:
-        ipv4_address: 172.25.0.4
-      proxynet:
-        ipv4_address: 172.20.0.60
-
-  # DNS Server für Hostname-Auflösung innerhalb des VPN
-  dnsmasq:
-    container_name: ca-lose-dns
-    image: andyshinn/dnsmasq:latest
-    restart: unless-stopped
-    cap_add:
-      - NET_ADMIN
-    command: >
-      --no-daemon
-      --log-queries
-      --address=/lose-verkaufen/172.25.0.2
-      --address=/frontend/172.25.0.2
-      --address=/backend/172.25.0.3
-      --address=/database/172.25.0.4
-      --address=/wg-admin/172.25.0.10
-    networks:
-      ca-lose-internal:
-        ipv4_address: 172.25.0.53
-
-  # WireGuard VPN mit Web-UI (wg-easy)
-  wireguard:
-    image: ghcr.io/wg-easy/wg-easy:latest
-    container_name: ca-lose-wireguard
-    cap_add:
-      - NET_ADMIN
-      - SYS_MODULE
-    environment:
-      LANG: de
-      WG_HOST: dus3.the1s.de
-      WG_PORT: "51830"
-      PORT: "51821"
-      WG_DEFAULT_ADDRESS: 10.14.14.x
-      WG_DEFAULT_DNS: "172.25.0.53"
-      WG_ALLOWED_IPS: 172.25.0.0/24
-      WG_PERSISTENT_KEEPALIVE: "25"
-      WG_POST_UP: "iptables -t nat -A POSTROUTING -s 10.14.14.0/24 -o eth0 -j MASQUERADE; iptables -A FORWARD -i wg0 -o eth0 -j ACCEPT; iptables -A FORWARD -i eth0 -o wg0 -m state --state RELATED,ESTABLISHED -j ACCEPT; iptables -A FORWARD -i wg0 -d 172.25.0.2 -j ACCEPT; iptables -A FORWARD -i wg0 -d 172.25.0.53 -j ACCEPT; iptables -A FORWARD -i wg0 -j DROP"
-      WG_POST_DOWN: "iptables -t nat -D POSTROUTING -s 10.14.14.0/24 -o eth0 -j MASQUERADE; iptables -D FORWARD -i wg0 -o eth0 -j ACCEPT; iptables -D FORWARD -i eth0 -o wg0 -m state --state RELATED,ESTABLISHED -j ACCEPT; iptables -D FORWARD -i wg0 -d 172.25.0.2 -j ACCEPT; iptables -D FORWARD -i wg0 -d 172.25.0.53 -j ACCEPT; iptables -D FORWARD -i wg0 -j DROP"
-    volumes:
-      - wireguard-data:/etc/wireguard
-      - /lib/modules:/lib/modules:ro
-    ports:
-      - "51830:51830/udp"
-    sysctls:
-      - net.ipv4.ip_forward=1
-      - net.ipv4.conf.all.src_valid_mark=1
-    restart: unless-stopped
-    depends_on:
-      - dnsmasq
-      - frontend
-    networks:
-      ca-lose-internal:
-        ipv4_address: 172.25.0.10
-      proxynet:
-        ipv4_address: 172.20.0.50
-
-volumes:
-  ca-lose_mysql:
-  wireguard-data:
-
-networks:
-  ca-lose-internal:
-    driver: bridge
-    ipam:
-      config:
-        - subnet: 172.25.0.0/24
-          gateway: 172.25.0.1
-  proxynet:
-    external: true

frontend/README.md

@@ -4,8 +4,8 @@ This template provides a minimal setup to get React working in Vite with HMR and
 
 Currently, two official plugins are available:
 
-- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) (or [oxc](https://oxc.rs) when used in [rolldown-vite](https://vite.dev/guide/rolldown)) for Fast Refresh
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Oxc](https://oxc.rs)
-- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/)
 
 ## React Compiler
 

frontend/eslint.config.js

@@ -16,7 +16,6 @@ export default defineConfig([
       reactRefresh.configs.vite,
     ],
     languageOptions: {
-      ecmaVersion: 2020,
       globals: globals.browser,
     },
   },

frontend/index.html

@@ -2,9 +2,20 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <link
+      rel="icon"
+      type="image/png"
+      href="/favicon-light.png"
+      media="(prefers-color-scheme: light)"
+    />
+    <link
+      rel="icon"
+      type="image/png"
+      href="/favicon-dark.png"
+      media="(prefers-color-scheme: dark)"
+    />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Lose verkaufen</title>
+    <title>Lose Verkaufen</title>
   </head>
   <body>
     <div id="root"></div>

frontend/package.json

@@ -12,37 +12,38 @@
   "dependencies": {
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.1",
-    "@fontsource/roboto": "^5.2.9",
+    "@fontsource-variable/inter": "^5.2.8",
-    "@mui/icons-material": "^7.3.6",
+    "@fontsource/inter": "^5.2.8",
-    "@mui/material": "^7.3.6",
+    "@mui/icons-material": "^9.0.1",
-    "@mui/styled-engine-sc": "^7.3.6",
+    "@mui/joy": "^5.0.0-beta.52",
-    "@tailwindcss/vite": "^4.1.11",
+    "@mui/material": "^9.0.1",
-    "i18next": "^25.7.4",
+    "@tailwindcss/vite": "^4.3.0",
+    "i18next": "^26.0.10",
     "js-cookie": "^3.0.5",
-    "lucide": "^0.562.0",
+    "lucide-react": "^1.14.0",
-    "lucide-react": "^0.562.0",
+    "react": "^17.0.0 || ^18.0.0 || ^19.0.0",
-    "react": "^19.2.3",
+    "react-dom": "^17.0.0 || ^18.0.0 || ^19.0.0",
-    "react-dom": "^19.2.0",
+    "react-i18next": "^17.0.7",
-    "react-i18next": "^16.5.3",
+    "react-router-dom": "^7.15.0",
-    "react-router-dom": "^7.11.0",
+    "tailwindcss": "^4.3.0"
-    "styled-components": "^6.1.19",
+  },
-    "tailwind-merge": "^3.3.1",
+  "peerDependencies": {
-    "tailwindcss": "^4.1.11",
+    "react": "^17.0.0 || ^18.0.0 || ^19.0.0",
-    "tailwindcss-animate": "^1.0.7"
+    "react-dom": "^17.0.0 || ^18.0.0 || ^19.0.0"
   },
   "devDependencies": {
-    "@eslint/js": "^9.39.1",
+    "@eslint/js": "^10.0.1",
     "@types/js-cookie": "^3.0.6",
-    "@types/node": "^24.10.1",
+    "@types/node": "^24.12.2",
-    "@types/react": "^19.2.5",
+    "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^5.1.1",
+    "@vitejs/plugin-react": "^6.0.1",
-    "eslint": "^9.39.1",
+    "eslint": "^10.2.1",
-    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-hooks": "^7.1.1",
-    "eslint-plugin-react-refresh": "^0.4.24",
+    "eslint-plugin-react-refresh": "^0.5.2",
-    "globals": "^16.5.0",
+    "globals": "^17.5.0",
-    "typescript": "~5.9.3",
+    "typescript": "~6.0.2",
-    "typescript-eslint": "^8.46.4",
+    "typescript-eslint": "^8.58.2",
-    "vite": "^7.2.4"
+    "vite": "^8.0.10"
   }
 }

frontend/public/favicon.icon/icon.json

@@ -0,0 +1,48 @@
+{
+  "fill" : {
+    "automatic-gradient" : "extended-srgb:0.00000,0.53333,1.00000,1.00000"
+  },
+  "groups" : [
+    {
+      "layers" : [
+        {
+          "blend-mode" : "normal",
+          "fill-specializations" : [
+            {
+              "value" : "automatic"
+            },
+            {
+              "appearance" : "dark",
+              "value" : {
+                "solid" : "extended-srgb:0.00000,0.53333,1.00000,1.00000"
+              }
+            }
+          ],
+          "image-name" : "Unbenannt.png",
+          "name" : "Unbenannt",
+          "position" : {
+            "scale" : 0.9,
+            "translation-in-points" : [
+              0,
+              0
+            ]
+          }
+        }
+      ],
+      "shadow" : {
+        "kind" : "neutral",
+        "opacity" : 0.5
+      },
+      "translucency" : {
+        "enabled" : true,
+        "value" : 0.5
+      }
+    }
+  ],
+  "supported-platforms" : {
+    "circles" : [
+      "watchOS"
+    ],
+    "squares" : "shared"
+  }
+}

frontend/public/vite.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

frontend/src/App.css

@@ -1 +1,8 @@
 @import "tailwindcss";
+
+html,
+body,
+#root {
+  height: 100%;
+  margin: 0;
+}

frontend/src/assets/react.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>

frontend/src/config/api.config.ts

@@ -0,0 +1,4 @@
+export const API_BASE =
+  (import.meta as any).env?.VITE_BACKEND_URL ||
+  import.meta.env.VITE_BACKEND_URL ||
+  "http://localhost:8004";

frontend/src/config/interfaces.config.ts

@@ -0,0 +1,21 @@
+export interface FormData {
+  firstName: string;
+  lastName: string;
+  email: string;
+  phoneNumber: string;
+  tickets: number;
+  companyName: string;
+  cmpFirstName: string;
+  cpmLastName: string;
+  cpmEmail: string;
+  cpmPhoneNumber: string;
+  street: string;
+  postalCode: string;
+  paymentMethod: string;
+}
+
+export interface Message {
+  type: "primary" | "neutral" | "danger" | "success" | "warning";
+  headline: string;
+  text: string;
+}

frontend/src/index.css

@@ -1 +1,12 @@
 @import "tailwindcss";
+
+html,
+body,
+#root {
+  height: 100%;
+  margin: 0;
+}
+
+html {
+  font-size: large;
+}

frontend/src/main.tsx

@@ -1,11 +1,11 @@
 import { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
+import "./utils/i18n/index.ts";
 import "./index.css";
-import "./utils/i18n";
 import App from "./App.tsx";
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
     <App />
-  </StrictMode>
+  </StrictMode>,
 );

frontend/src/pages/MainForm.tsx

@@ -1,35 +1,40 @@
-import {
-  TextField,
-  FormControlLabel,
-  Checkbox,
-  Button,
-  Alert,
-  CircularProgress,
-  Autocomplete,
-  Chip,
-  Box,
-  Paper,
-  Typography,
-} from "@mui/material";
 import { useTranslation } from "react-i18next";
 import { useState, useEffect } from "react";
-import { submitFormData } from "../utils/sender";
-import Cookies from "js-cookie";
 import * as React from "react";
+import Cookies from "js-cookie";
+import {
+  Sheet,
+  Input,
+  Button,
+  Checkbox,
+  Chip,
+  IconButton,
+  Alert,
+  Typography,
+  FormControl,
+  FormLabel,
+  Autocomplete,
+  ButtonGroup,
+  Modal,
+  ModalDialog,
+  ModalClose,
+} from "@mui/joy";
+import { submitFormData } from "../utils/sender";
+import { API_BASE } from "../config/api.config";
+import type { FormData, Message } from "../config/interfaces.config";
+import PersonIcon from "@mui/icons-material/Person";
+import QrCodeIcon from "@mui/icons-material/QrCode";
+import TranslateIcon from "@mui/icons-material/Translate";
+import qrCode from "../assets/PayPal-QR-Code.png";
 
-interface Message {
+const PAYMENT_METHODS = ["bar", "paypal", "andere"] as const;
-  type: "error" | "info" | "success" | "warning";
+const PAYMENT_LABELS: Record<string, string> = {
-  headline: string;
+  bar: "Cash",
-  text: string;
+  paypal: "PayPal",
-}
+  andere: "Transfer",
+};
 
-export const MainForm = () => {
+const DEFAULT_FORM: FormData = {
-  const { t } = useTranslation();
-  const [invoice, setInvoice] = useState(false);
-  const [msg, setMsg] = useState<Message | null>(null);
-  const [isLoading, setIsLoading] = useState(false);
-  const [nextID, setNextID] = useState<number | null>(null);
-  const [formData, setFormData] = useState({
   firstName: "",
   lastName: "",
   email: "",
@@ -43,59 +48,120 @@ export const MainForm = () => {
   street: "",
   postalCode: "",
   paymentMethod: "",
-  });
+};
+
+// ─── Field component lives OUTSIDE MainForm so React doesn't treat it as a
+// new component type on every render, which would cause inputs to lose focus.
+const Field = ({
+  label,
+  name,
+  type = "text",
+  required = true,
+  formData,
+  onChange,
+}: {
+  label: string;
+  name: keyof FormData;
+  type?: string;
+  required?: boolean;
+  formData: FormData;
+  onChange: (e: React.ChangeEvent<HTMLInputElement>) => void;
+}) => (
+  <FormControl required={required}>
+    <FormLabel>{label}</FormLabel>
+    <Input
+      name={name}
+      type={type}
+      value={formData[name] as string}
+      onChange={onChange}
+      variant="soft"
+      sx={{ borderRadius: "10px" }}
+    />
+  </FormControl>
+);
+
+export const MainForm = () => {
+  const { t, i18n } = useTranslation();
+
+  const [invoice, setInvoice] = useState(false);
+  const [msg, setMsg] = useState<Message | null>(null);
+  const [isLoading, setIsLoading] = useState(false);
+  const [nextID, setNextID] = useState<number | null>(null);
   const [users, setUsers] = useState<string[]>([]);
   const [selectedUser, setSelectedUser] = useState<string | null>(null);
-
+  const [formData, setFormData] = useState<FormData>(DEFAULT_FORM);
-  useEffect(() => {
+  const [showSelectUser, setShowSelectUser] = useState(false);
-    // Fetch user data or any other data needed for the form
+  const [QRmodal, setQRmodal] = useState(false);
-    try {
-      const fetchUsers = async () => {
-        const response = await fetch("http://localhost:8004/default/users");
-        const data = await response.json();
-        setUsers(data.users);
-      };
-      fetchUsers();
-      console.log(users);
-    } catch (error) {
-      setMsg({
-        type: "error",
-        headline: t("error"),
-        text: t("failed-to-load-users"),
-      });
-      console.error("Error fetching users:", error);
-    }
-
-    if (Cookies.get("selectedUser")) {
-      const cookieUser = Cookies.get("selectedUser")!;
-      setSelectedUser(cookieUser);
-      confirmUser(cookieUser);
-    }
-  }, [isLoading]);
 
   const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
     setFormData({ ...formData, [e.target.name]: e.target.value });
   };
 
-  const confirmUser = async (selectedUser: string) => {
+  const confirmUser = async (username: string) => {
     try {
-      const response = await fetch(
+      const res = await fetch(
-        `http://localhost:8004/default/confirm-user?username=${selectedUser}`,
+        `${API_BASE}/default/confirm-user?username=${username}`,
       );
-      const data = await response.json();
+      const data = await res.json();
       setNextID(data.nextID);
     } catch (error) {
       console.error("Error confirming user:", error);
     }
   };
 
-  const handleUserSelection = (selectedUser: string | null) => {
+  const handleUserSelection = (username: string | null) => {
-    if (!selectedUser) return;
+    if (!username) return;
-    setSelectedUser(selectedUser);
+    setSelectedUser(username);
-    confirmUser(selectedUser);
+    confirmUser(username);
-    Cookies.set("selectedUser", selectedUser);
+    Cookies.set("selectedUser", username);
   };
 
+  const changeTranslation = () => {
+    const clientLng = i18n.language;
+
+    if (clientLng === "en") {
+      i18n.changeLanguage("de");
+      Cookies.set("language", "de");
+    } else if (clientLng === "de") {
+      i18n.changeLanguage("en");
+      Cookies.set("language", "en");
+    } else {
+      setMsg({
+        type: "danger",
+        headline: "Error",
+        text: "Cannot change langugage.",
+      });
+    }
+  };
+
+  useEffect(() => {
+    if (formData.paymentMethod === "paypal") {
+      setQRmodal(true);
+    }
+  }, [formData.paymentMethod]);
+
+  useEffect(() => {
+    (async () => {
+      try {
+        const res = await fetch(`${API_BASE}/default/users`);
+        const data = await res.json();
+        setUsers(data.users);
+      } catch {
+        setMsg({
+          type: "danger",
+          headline: t("error"),
+          text: t("failed-to-load-users"),
+        });
+      }
+    })();
+
+    const cookieUser = Cookies.get("selectedUser");
+    if (cookieUser) {
+      setSelectedUser(cookieUser);
+      confirmUser(cookieUser);
+    }
+  }, []);
+
   const handleSubmit = async () => {
     setIsLoading(true);
     try {
@@ -104,7 +170,7 @@ export const MainForm = () => {
         document.location.href = `/success?id=${nextID}&tickets=${formData.tickets}`;
       } else {
         setMsg({
-          type: "error",
+          type: "danger",
           headline: t("error"),
           text: result.error || t("form-submission-failed"),
         });
@@ -114,35 +180,78 @@ export const MainForm = () => {
     }
   };
 
+  // Shorthand so we don't repeat formData + onChange on every Field usage
+  const fieldProps = { formData, onChange: handleChange };
+
   return (
-    <Box
+    <>
-      className="bg-gray-100 py-10 px-4"
+      <Modal open={showSelectUser}>
-      sx={{
+        <ModalDialog color="primary" layout="center" size="lg">
-        minHeight: "100vh",
+          <ModalClose onClick={() => setShowSelectUser(false)} />
+          <Typography>{t("user")}</Typography>
+          {/* User selection */}
+          <Autocomplete
+            options={users}
+            value={selectedUser}
+            onChange={(_, value) => handleUserSelection(value)}
+            placeholder={t("user")}
+            variant="soft"
+            sx={{ borderRadius: "10px" }}
+            onKeyDown={(e) => {
+              if (e.key === "Enter") e.preventDefault();
+            }}
+          />
+        </ModalDialog>
+      </Modal>
+      <Modal open={QRmodal}>
+        <ModalDialog color="primary" layout="center" size="lg">
+          <ModalClose onClick={() => setQRmodal(false)} />
+          <Typography>{t("qr-text")}</Typography>
+          <img
+            src={qrCode}
+            alt="PayPal QR Code"
+            style={{
               width: "100%",
-        display: "flex",
+              height: "auto",
-        alignItems: "center",
+              maxHeight: "70vh",
-        justifyContent: "center",
+              objectFit: "contain",
+            }}
+          />
+        </ModalDialog>
+      </Modal>
+
+      <div className="min-h-screen w-full flex items-center justify-center from-slate-100 to-blue-50 p-4">
+        <Sheet
+          variant="plain"
+          className="w-full"
+          sx={{
+            position: "relative",
+            maxWidth: 460,
+            borderRadius: "24px",
+            p: { xs: "1.5rem", sm: "2rem" },
+            boxShadow: "0 24px 64px -12px rgba(0,0,0,0.18)",
+            background: "#fff",
           }}
         >
-      <Paper
+          <ButtonGroup
-        elevation={6}
+            color="primary"
-        className="w-full rounded-2xl"
+            disabled={false}
-        sx={{
+            size="lg"
-          backgroundColor: "#fff",
+            spacing={1}
-          boxShadow: "0 25px 50px -12px rgba(0, 0, 0, 0.25)",
+            variant="soft"
-          width: "100%",
-          maxWidth: {
-            xs: 360, // kompakte Handy-Ansicht
-            sm: 420, // kleine Tablets / große Phones
-            md: 480, // Desktop, bleibt angenehm schmal
-          },
-          padding: {
-            xs: "1.5rem",
-            sm: "2rem",
-          },
-        }}
           >
+            <IconButton onClick={() => setShowSelectUser(true)}>
+              <PersonIcon />
+            </IconButton>
+            <IconButton onClick={() => setQRmodal(true)}>
+              <QrCodeIcon />
+            </IconButton>
+            {/* Language toggle */}
+            <IconButton onClick={changeTranslation}>
+              <TranslateIcon />
+            </IconButton>
+          </ButtonGroup>
+
           <form
             onSubmit={(e) => {
               e.preventDefault();
@@ -150,337 +259,184 @@ export const MainForm = () => {
             }}
             className="flex flex-col gap-4"
           >
-          {/* User Selection */}
+            {/* Next ID badge */}
-          <Autocomplete
-            disablePortal
-            options={users}
-            value={selectedUser}
-            fullWidth
-            renderInput={(params) => (
-              <TextField {...params} label={t("user")} variant="filled" />
-            )}
-            onChange={(_event, value) => handleUserSelection(value)}
-            onKeyDown={(event) => {
-              if (event.key === "Enter") {
-                event.defaultMuiPrevented = true;
-              }
-            }}
-          />
-
-          {/* Next ID Chip */}
             <Chip
-            label={`#${nextID ?? "N/A"}`}
+              size="lg"
-            color="primary"
+              variant="solid"
+              color="neutral"
               sx={{
                 alignSelf: "flex-start",
-              fontWeight: 500,
-              fontSize: "0.9rem",
-              mt: 0.5,
-              mb: 0.5,
-              py: 0.5,
-              px: 1.25,
                 borderRadius: "999px",
-              background: "linear-gradient(135deg, #1976d2 0%, #1565c0 100%)",
+                fontWeight: 600,
+                marginTop: 1,
               }}
-          />
+            >
+              #{nextID ?? "N/A"}
+            </Chip>
 
-          {/* Name Fields - Two Columns */}
+            {/* Name row */}
-          <Box className="grid grid-cols-2 gap-3">
+            <div className="grid grid-cols-2 gap-3">
-            <TextField
+              <Field label={t("first-name")} name="firstName" {...fieldProps} />
-              required
+              <Field label={t("last-name")} name="lastName" {...fieldProps} />
-              id="first-name"
+            </div>
-              label={t("first-name")}
-              variant="filled"
-              value={formData.firstName}
-              onChange={handleChange}
-              name="firstName"
-              fullWidth
-            />
-            <TextField
-              required
-              id="last-name"
-              label={t("last-name")}
-              variant="filled"
-              value={formData.lastName}
-              onChange={handleChange}
-              name="lastName"
-              fullWidth
-            />
-          </Box>
 
-          {/* Email */}
+            <Field
-          <TextField
-            required
-            id="email"
               label={t("email")}
-            variant="filled"
-            type="email"
-            value={formData.email}
-            onChange={handleChange}
               name="email"
-            fullWidth
+              type="email"
+              {...fieldProps}
             />
-
+            <Field
-          {/* Phone Number */}
-          <TextField
-            required
-            id="phone-number"
               label={t("phone-number")}
-            variant="filled"
-            type="tel"
-            value={formData.phoneNumber}
-            onChange={handleChange}
               name="phoneNumber"
-            fullWidth
+              type="tel"
+              {...fieldProps}
             />
 
-          {/* Tickets and Invoice Checkbox */}
+            {/* Tickets + Invoice toggle */}
-          <Box className="grid grid-cols-2 gap-3 items-center">
+            <div className="grid grid-cols-2 gap-3 items-end">
-            <TextField
+              <FormControl required>
-              required
+                <FormLabel>{t("tickets")}</FormLabel>
-              id="tickets"
+                <Input
+                  name="tickets"
                   type="number"
-              label={t("tickets")}
-              variant="filled"
                   value={formData.tickets}
                   onChange={handleChange}
-              name="tickets"
+                  slotProps={{ input: { min: 1 } }}
-              fullWidth
+                  variant="soft"
-              inputProps={{ min: 1 }}
+                  sx={{ borderRadius: "10px" }}
                 />
-            <FormControlLabel
+              </FormControl>
-              control={
+              <div className="flex items-center pb-2">
                 <Checkbox
                   checked={invoice}
                   onChange={(e) => setInvoice(e.target.checked)}
-                />
-              }
                   label={t("invoice")}
-              className="justify-end"
+                  variant="outlined"
                 />
-          </Box>
+              </div>
+            </div>
 
-          {/* Invoice Fields */}
+            {/* Invoice details (conditional) */}
             {invoice && (
-            <Box
+              <div className="flex flex-col gap-3 pt-4 border-t border-blue-200">
-              className="flex flex-col gap-2 pt-3 mt-2"
+                <Typography level="title-sm" color="primary">
-              sx={{
+                  {t("invoice-details")}
-                borderTop: "2px solid",
-                borderColor: "primary.light",
-                borderRadius: "0",
-              }}
-            >
-              <TextField
-                required
-                id="company-name"
-                label={t("company-name")}
-                variant="filled"
-                value={formData.companyName}
-                onChange={handleChange}
-                name="companyName"
-                fullWidth
-              />
-
-              {/* Invoice Name Fields - Two Columns */}
-              <Box className="grid grid-cols-2 gap-3">
-                <TextField
-                  required
-                  id="first-name_invoice"
-                  label={t("first-name")}
-                  variant="filled"
-                  value={formData.cmpFirstName}
-                  onChange={handleChange}
-                  name="cmpFirstName"
-                  fullWidth
-                />
-                <TextField
-                  required
-                  id="last-name_invoice"
-                  label={t("last-name")}
-                  variant="filled"
-                  value={formData.cpmLastName}
-                  onChange={handleChange}
-                  name="cpmLastName"
-                  fullWidth
-                />
-              </Box>
-
-              <TextField
-                required
-                id="street"
-                label={t("street")}
-                variant="filled"
-                value={formData.street}
-                onChange={handleChange}
-                name="street"
-                fullWidth
-              />
-
-              <TextField
-                required
-                id="postal-code"
-                label={t("postal-code")}
-                variant="filled"
-                value={formData.postalCode}
-                onChange={handleChange}
-                name="postalCode"
-                fullWidth
-              />
-
-              <TextField
-                required
-                id="phone-number_invoice"
-                label={t("phone-number")}
-                variant="filled"
-                type="tel"
-                value={formData.cpmPhoneNumber}
-                onChange={handleChange}
-                name="cpmPhoneNumber"
-                fullWidth
-              />
-
-              <TextField
-                required
-                id="email_invoice"
-                label={t("email")}
-                variant="filled"
-                type="email"
-                value={formData.cpmEmail}
-                onChange={handleChange}
-                name="cpmEmail"
-                fullWidth
-              />
-            </Box>
-          )}
-          {/* Payment Methods */}
-          <Box className="flex flex-col gap-2 mt-2">
-            <Typography
-              component="label"
-              sx={{
-                fontSize: "0.875rem",
-                fontWeight: 500,
-                color: "text.secondary",
-                display: "flex",
-                alignItems: "center",
-                gap: 0.5,
-              }}
-            >
-              {t("select-payment-method")} *
                 </Typography>
-            <Box className="flex gap-2 flex-wrap">
+                <Field
+                  label={t("company-name")}
+                  name="companyName"
+                  {...fieldProps}
+                />
+                <div className="grid grid-cols-2 gap-3">
+                  <Field
+                    label={t("first-name")}
+                    name="cmpFirstName"
+                    {...fieldProps}
+                  />
+                  <Field
+                    label={t("last-name")}
+                    name="cpmLastName"
+                    {...fieldProps}
+                  />
+                </div>
+                <Field label={t("street")} name="street" {...fieldProps} />
+                <Field
+                  label={t("postal-code")}
+                  name="postalCode"
+                  {...fieldProps}
+                />
+                <Field
+                  label={t("phone-number")}
+                  name="cpmPhoneNumber"
+                  type="tel"
+                  {...fieldProps}
+                />
+                <Field
+                  label={t("email")}
+                  name="cpmEmail"
+                  type="email"
+                  {...fieldProps}
+                />
+              </div>
+            )}
+
+            {/* Payment method selection */}
+            <FormControl required>
+              <FormLabel>{t("select-payment-method")}</FormLabel>
+              <div className="flex gap-2 flex-wrap mt-1">
+                {PAYMENT_METHODS.map((method) => (
                   <Button
+                    key={method}
                     variant={
-                  formData.paymentMethod === "bar" ? "contained" : "outlined"
+                      formData.paymentMethod === method ? "solid" : "soft"
                     }
+                    color="primary"
                     onClick={() =>
-                  setFormData({ ...formData, paymentMethod: "bar" })
+                      setFormData((prev) => ({
+                        ...prev,
+                        paymentMethod: method,
+                      }))
                     }
                     sx={{
                       flex: 1,
-                  minWidth: "100px",
+                      minWidth: "90px",
-                  py: 1.5,
                       borderRadius: "12px",
+                      py: 1.5,
                       textTransform: "none",
-                  fontWeight: formData.paymentMethod === "bar" ? 600 : 400,
+                      fontWeight: formData.paymentMethod === method ? 700 : 400,
                     }}
                   >
-                {t("cash")}
+                    {PAYMENT_LABELS[method]}
                   </Button>
-              <Button
+                ))}
-                variant={
+              </div>
-                  formData.paymentMethod === "paypal" ? "contained" : "outlined"
+              {/* Hidden required input to enforce payment selection on submit */}
-                }
-                onClick={() =>
-                  setFormData({ ...formData, paymentMethod: "paypal" })
-                }
-                sx={{
-                  flex: 1,
-                  minWidth: "100px",
-                  py: 1.5,
-                  borderRadius: "12px",
-                  textTransform: "none",
-                  fontWeight: formData.paymentMethod === "paypal" ? 600 : 400,
-                }}
-              >
-                {t("paypal")}
-              </Button>
-              <Button
-                variant={
-                  formData.paymentMethod === "andere" ? "contained" : "outlined"
-                }
-                onClick={() =>
-                  setFormData({ ...formData, paymentMethod: "andere" })
-                }
-                sx={{
-                  flex: 1,
-                  minWidth: "100px",
-                  py: 1.5,
-                  borderRadius: "12px",
-                  textTransform: "none",
-                  fontWeight: formData.paymentMethod === "andere" ? 600 : 400,
-                }}
-              >
-                {t("transfer")}
-              </Button>
-            </Box>
               {!formData.paymentMethod && (
                 <input
                   tabIndex={-1}
-                autoComplete="off"
+                  required
+                  value=""
+                  onChange={() => {}}
                   style={{
                     opacity: 0,
                     width: 0,
                     height: 0,
                     position: "absolute",
                   }}
-                required
-                value={formData.paymentMethod}
-                onChange={() => {}}
                 />
               )}
-          </Box>
+            </FormControl>
 
-          {/* Submit Button */}
+            {/* Submit button */}
             <Button
               type="submit"
-            variant="contained"
+              loading={isLoading}
-            disabled={isLoading || !formData.paymentMethod}
+              disabled={!formData.paymentMethod}
-            fullWidth
+              size="lg"
-            size="large"
               sx={{
-              mt: 3,
+                mt: 2,
-              py: 2,
+                borderRadius: "14px",
-              textTransform: "uppercase",
+                fontWeight: 700,
-              fontWeight: "bold",
+                letterSpacing: "0.05em",
-              borderRadius: "12px",
+                background: "linear-gradient(135deg, #2563eb, #1d4ed8)",
-              fontSize: "1rem",
-              background: "linear-gradient(135deg, #1976d2 0%, #1565c0 100%)",
-              boxShadow: "0 4px 14px 0 rgba(25, 118, 210, 0.39)",
                 "&:hover": {
-                background: "linear-gradient(135deg, #1565c0 0%, #0d47a1 100%)",
+                  background: "linear-gradient(135deg, #1d4ed8, #1e40af)",
-                boxShadow: "0 6px 20px 0 rgba(25, 118, 210, 0.5)",
-              },
-              "&:disabled": {
-                background: "#e0e0e0",
-                boxShadow: "none",
                 },
               }}
             >
-            {isLoading ? (
+              {t("submit")}
-              <CircularProgress size={24} color="inherit" />
-            ) : (
-              t("submit")
-            )}
             </Button>
 
-          {/* Alert Message */}
+            {/* Alert message */}
             {msg && (
-            <Alert severity={msg.type} sx={{ mt: 2 }}>
+              <Alert color={msg.type} sx={{ borderRadius: "12px" }}>
-              {msg.headline}: {msg.text}
+                <strong>{msg.headline}:</strong> {msg.text}
               </Alert>
             )}
           </form>
-      </Paper>
+        </Sheet>
-    </Box>
+      </div>
+    </>
   );
 };

frontend/src/pages/SuccessPage.tsx

@@ -1,23 +1,20 @@
-import { Box, Paper, Typography, Chip, Button } from "@mui/material";
 import { useEffect, useState } from "react";
 import { CircleCheck } from "lucide-react";
 import { useTranslation } from "react-i18next";
+import { Sheet, Typography, Chip, Button } from "@mui/joy";
 
 export const SuccessPage = () => {
-  const [orderId, setOrderId] = useState<string | null>(null);
-  const [tickets, setNumberOfTickets] = useState<number>(0);
-  const [animate, setAnimate] = useState(false);
   const { t } = useTranslation();
+  const [orderId, setOrderId] = useState<string | null>(null);
+  const [tickets, setTickets] = useState<number>(0);
+  const [animate, setAnimate] = useState(false);
   const [seconds, setSeconds] = useState(30);
 
   useEffect(() => {
     const params = new URLSearchParams(window.location.search);
-    const id = params.get("id");
+    setOrderId(params.get("id"));
-    const numberOfTickets = params.get("tickets");
+    setTickets(parseInt(params.get("tickets") ?? "0", 10));
-
+    // Small delay so the CSS transition actually plays
-    setOrderId(id);
-    setNumberOfTickets(numberOfTickets ? parseInt(numberOfTickets, 10) : 0);
-
     setTimeout(() => setAnimate(true), 100);
   }, []);
 
@@ -26,185 +23,153 @@ export const SuccessPage = () => {
       window.location.href = "/";
       return;
     }
-
+    const timer = setTimeout(() => setSeconds((s) => s - 1), 1000);
-    const timer = setTimeout(() => setSeconds(seconds - 1), 1000);
-
     return () => clearTimeout(timer);
   }, [seconds]);
 
+  // Returns a style object that slides the element up + fades it in.
+  // Each section gets a slightly later delay for a staggered entrance.
+  const fadeUp = (delay: string): React.CSSProperties => ({
+    transition: `opacity 0.5s ease-in-out ${delay}, transform 0.5s ease-in-out ${delay}`,
+    transform: animate ? "translateY(0)" : "translateY(20px)",
+    opacity: animate ? 1 : 0,
+  });
+
   return (
-    <Box className="min-h-screen bg-gray-800 flex items-center justify-center p-4">
+    <div className="min-h-screen w-full flex items-center justify-center bg-linear-to-br from-slate-800 to-slate-900 p-4">
-      <Paper
+      <Sheet
-        elevation={3}
+        variant="plain"
-        className="w-full max-w-md p-8 rounded-lg"
         sx={{
-          backgroundColor: "#fff",
-          textAlign: "center",
           position: "relative",
+          width: "100%",
+          maxWidth: 440,
+          borderRadius: "24px",
+          p: { xs: "2rem", sm: "2.5rem" },
+          boxShadow: "0 24px 64px -12px rgba(0,0,0,0.4)",
+          background: "#fff",
+          textAlign: "center",
           overflow: "hidden",
         }}
       >
-        {/* Animated Success Icon */}
+        {/* Green accent bar at the top */}
-        <Box
+        <div
-          sx={{
+          style={{
-            display: "flex",
-            justifyContent: "center",
-            mb: 3,
-            transition: "all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1)",
-            transform: animate ? "scale(1)" : "scale(0)",
-            opacity: animate ? 1 : 0,
-          }}
-        >
-          <CircleCheck size={80} className="text-green-500" strokeWidth={2.5} />
-        </Box>
-
-        {/* Success Message */}
-        <Typography
-          variant="h4"
-          component="h1"
-          gutterBottom
-          sx={{
-            fontWeight: "bold",
-            color: "#2e7d32",
-            mb: 2,
-            transition: "all 0.5s ease-in-out 0.2s",
-            transform: animate ? "translateY(0)" : "translateY(20px)",
-            opacity: animate ? 1 : 0,
-          }}
-        >
-          {t("form-submitted-successfully")}
-        </Typography>
-
-        <Typography
-          variant="body1"
-          sx={{
-            color: "#666",
-            mb: 3,
-            transition: "all 0.5s ease-in-out 0.3s",
-            transform: animate ? "translateY(0)" : "translateY(20px)",
-            opacity: animate ? 1 : 0,
-          }}
-        >
-          {t("ticket-payment", { count: tickets })}
-        </Typography>
-
-        {/* Tickets Display */}
-        {tickets > 0 && (
-          <Box
-            sx={{
-              mb: 2,
-              transition: "all 0.5s ease-in-out 0.35s",
-              transform: animate ? "translateY(0)" : "translateY(20px)",
-              opacity: animate ? 1 : 0,
-            }}
-          >
-            <Chip
-              label={`${tickets} ${tickets === 1 ? t("ticket") : t("tickets")}`}
-              color="secondary"
-              sx={{
-                fontWeight: "bold",
-                fontSize: "1rem",
-                py: 2.5,
-                px: 2,
-              }}
-            />
-          </Box>
-        )}
-
-        {/* Order ID Display */}
-        {orderId && (
-          <Box
-            sx={{
-              mb: 3,
-              transition: "all 0.5s ease-in-out 0.4s",
-              transform: animate ? "translateY(0)" : "translateY(20px)",
-              opacity: animate ? 1 : 0,
-            }}
-          >
-            <Typography
-              variant="body2"
-              sx={{
-                color: "#888",
-                mb: 1,
-                fontSize: "0.875rem",
-              }}
-            >
-              {t("entry-id")}
-            </Typography>
-            <Chip
-              label={`#${orderId}`}
-              color="primary"
-              sx={{
-                fontWeight: "bold",
-                fontSize: "1.25rem",
-                py: 3,
-                px: 2,
-              }}
-            />
-          </Box>
-        )}
-
-        {/* Return button */}
-        <Box
-          sx={{
-            mb: 3,
-            transition: "all 0.5s ease-in-out 0.4s",
-            transform: animate ? "translateY(0)" : "translateY(20px)",
-            opacity: animate ? 1 : 0,
-          }}
-        >
-          <Button
-            href="/"
-            variant="contained"
-            color="primary"
-            sx={{
-              fontWeight: "bold",
-              fontSize: "1.25rem",
-              py: 3,
-              px: 2,
-            }}
-          >
-            {seconds + " " + t("return-to-homepage")}
-          </Button>
-        </Box>
-
-        {/* Additional Info */}
-        <Box
-          sx={{
-            mt: 4,
-            pt: 3,
-            borderTop: "1px solid #e0e0e0",
-            transition: "all 0.5s ease-in-out 0.5s",
-            transform: animate ? "translateY(0)" : "translateY(20px)",
-            opacity: animate ? 1 : 0,
-          }}
-        >
-          <Typography
-            variant="body2"
-            sx={{
-              color: "#666",
-              lineHeight: 1.6,
-            }}
-          >
-            {t("thank-you")}
-          </Typography>
-        </Box>
-
-        {/* Decorative Elements */}
-        <Box
-          sx={{
             position: "absolute",
             top: 0,
             left: 0,
             right: 0,
             height: "4px",
-            background: "linear-gradient(90deg, #4caf50 0%, #81c784 100%)",
+            background: "linear-gradient(90deg, #22c55e, #86efac)",
-            transition: "all 0.8s ease-in-out 0.6s",
+            transition: "transform 0.8s ease-in-out 0.6s",
             transform: animate ? "scaleX(1)" : "scaleX(0)",
             transformOrigin: "left",
           }}
         />
-      </Paper>
+
-    </Box>
+        {/* Animated success icon */}
+        <div
+          style={{
+            display: "flex",
+            justifyContent: "center",
+            marginBottom: "1.5rem",
+            transition: "all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1)",
+            transform: animate ? "scale(1)" : "scale(0)",
+            opacity: animate ? 1 : 0,
+          }}
+        >
+          <CircleCheck size={80} color="#22c55e" strokeWidth={2.5} />
+        </div>
+
+        {/* Headline */}
+        <div style={fadeUp("0.2s")}>
+          <Typography
+            level="h3"
+            sx={{ fontWeight: 700, color: "#15803d", mb: 1 }}
+          >
+            {t("form-submitted-successfully")}
+          </Typography>
+        </div>
+
+        {/* Subtitle */}
+        <div style={fadeUp("0.3s")}>
+          <Typography level="body-md" sx={{ color: "#6b7280", mb: 3 }}>
+            {t("ticket-payment", { count: tickets })}
+          </Typography>
+        </div>
+
+        {/* Tickets chip */}
+        {tickets > 0 && (
+          <div style={fadeUp("0.35s")} className="flex justify-center mb-3">
+            <Chip
+              size="lg"
+              variant="soft"
+              color="success"
+              sx={{ fontWeight: 700, fontSize: "1rem", px: 2, py: 1 }}
+            >
+              {tickets} {tickets === 1 ? t("ticket") : t("tickets")}
+            </Chip>
+          </div>
+        )}
+
+        {/* Order ID chip */}
+        {orderId && (
+          <div
+            style={fadeUp("0.4s")}
+            className="flex flex-col items-center gap-1 mb-4"
+          >
+            <Typography
+              level="body-xs"
+              sx={{
+                color: "#9ca3af",
+                textTransform: "uppercase",
+                letterSpacing: "0.08em",
+              }}
+            >
+              {t("entry-id")}
+            </Typography>
+            <Chip
+              size="lg"
+              variant="solid"
+              color="primary"
+              sx={{ fontWeight: 700, fontSize: "1.25rem", px: 3, py: 1.5 }}
+            >
+              #{orderId}
+            </Chip>
+          </div>
+        )}
+
+        {/* Return button with countdown */}
+        <div style={fadeUp("0.45s")} className="mb-4">
+          <Button
+            component="a"
+            href="/"
+            size="lg"
+            color="primary"
+            variant="solid"
+            fullWidth
+            sx={{
+              borderRadius: "12px",
+              fontWeight: 700,
+              background: "linear-gradient(135deg, #2563eb, #1d4ed8)",
+              "&:hover": {
+                background: "linear-gradient(135deg, #1d4ed8, #1e40af)",
+              },
+            }}
+          >
+            {seconds}s &mdash; {t("return-to-homepage")}
+          </Button>
+        </div>
+
+        {/* Thank-you note */}
+        <div style={fadeUp("0.5s")} className="pt-4 border-t border-slate-100">
+          <Typography
+            level="body-sm"
+            sx={{ color: "#9ca3af", lineHeight: 1.6 }}
+          >
+            {t("thank-you")}
+          </Typography>
+        </div>
+      </Sheet>
+    </div>
   );
 };

frontend/src/utils/i18n/locales/de/de.json

@@ -4,6 +4,7 @@
     "phone-number": "Telefonnummer",
     "tickets": "Lose",
     "invoice": "Rechnung",
+    "invoice-details": "Rechnungsdetails",
     "company-name": "Firmenname",
     "street": "Straße + Haus Nr.",
     "postal-code": "Plz + Stadt",
@@ -24,5 +25,6 @@
     "entry-id": "Eintrags-ID",
     "thank-you": "Vielen Dank für Ihre Unterstützung der Claudius Akademie! Wir wünschen Ihnen viel Glück mit dem Los.",
     "select-payment-method": "Zahlungsmethode auswählen",
-    "return-to-homepage": "Zurück"
+    "return-to-homepage": "Zurück",
+    "qr-text": "PayPal QR-Code der Claudius Akademie"
 }

frontend/src/utils/i18n/locales/en/en.json

@@ -3,6 +3,7 @@
     "last-name": "Last Name",
     "phone-number": "Phone Number",
     "invoice": "Invoice",
+    "invoice-details": "Invoice Details",
     "company-name": "Company Name",
     "street": "Street + House No.",
     "postal-code": "Postal Code + City",
@@ -25,5 +26,6 @@
     "entry-id": "Entry ID",
     "thank-you": "Thank you for supporting the Claudius Akademie! We wish you the best of luck with your ticket.",
     "select-payment-method": "Select Payment Method",
-    "return-to-homepage": "Return"
+    "return-to-homepage": "Return",
+    "qr-text": "PayPal QR-Code from the Claudius Akademie"
 }

frontend/src/utils/sender.ts

@@ -1,24 +1,17 @@
-interface FormData {
+import { API_BASE } from "../config/api.config";
-  firstName: string;
+import type { FormData } from "../config/interfaces.config";
-  lastName: string;
+
-  email: string;
+export const submitFormData = async (
-  phoneNumber: string;
+  data: FormData,
-  tickets: number;
+  username: string | null,
-  companyName: string;
+) => {
-  cmpFirstName: string;
+  if (username == null) {
-  cpmLastName: string;
+    return { success: false, errorCode: "x001" };
-  cpmEmail: string;
+  }
-  cpmPhoneNumber: string;
-  street: string;
-  postalCode: string;
-  paymentMethod: string;
-}
 
-export const submitFormData = async (data: FormData, username: string) => {
-  console.log(data);
   try {
     const response = await fetch(
-      `http://localhost:8004/default/new-entry?username=${username}`,
+      `${API_BASE}/default/new-entry?username=${username}`,
       {
         method: "POST",
         headers: {

frontend/tailwind.config.js

@@ -1,11 +0,0 @@
-module.exports = {
-  content: [
-    "./index.html",
-    "./src/**/*.{js,jsx,ts,tsx}",
-    // add other paths if needed
-  ],
-  theme: {
-    extend: {},
-  },
-  plugins: [],
-};

frontend/tsconfig.app.json

@@ -1,10 +1,9 @@
 {
   "compilerOptions": {
     "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
-    "target": "ES2022",
+    "target": "es2023",
-    "useDefineForClassFields": true,
+    "lib": ["ES2023", "DOM"],
-    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "module": "esnext",
-    "module": "ESNext",
     "types": ["vite/client"],
     "skipLibCheck": true,
 
@@ -17,12 +16,10 @@
     "jsx": "react-jsx",
 
     /* Linting */
-    "strict": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "erasableSyntaxOnly": true,
-    "noFallthroughCasesInSwitch": true,
+    "noFallthroughCasesInSwitch": true
-    "noUncheckedSideEffectImports": true
   },
   "include": ["src"]
 }

frontend/tsconfig.node.json

@@ -1,9 +1,9 @@
 {
   "compilerOptions": {
     "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
-    "target": "ES2023",
+    "target": "es2023",
     "lib": ["ES2023"],
-    "module": "ESNext",
+    "module": "esnext",
     "types": ["node"],
     "skipLibCheck": true,
 
@@ -15,12 +15,10 @@
     "noEmit": true,
 
     /* Linting */
-    "strict": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "erasableSyntaxOnly": true,
-    "noFallthroughCasesInSwitch": true,
+    "noFallthroughCasesInSwitch": true
-    "noUncheckedSideEffectImports": true
   },
   "include": ["vite.config.ts"]
 }

frontend/vite.config.ts

@@ -1,7 +1,6 @@
-import { defineConfig } from 'vite'
+import { defineConfig } from "vite";
-import react from '@vitejs/plugin-react'
+import tailwindcss from "@tailwindcss/vite";
 
-// https://vite.dev/config/
 export default defineConfig({
-  plugins: [react()],
+  plugins: [tailwindcss()],
-})
+});