Fix build issues and make SMTP config optional

next.config.js

@@ -1,4 +1,15 @@
 module.exports = {
+  reactStrictMode: true,
+  output: 'standalone',
+  images: {
+    domains: ['images.unsplash.com', 'localhost'],
+  },
+  env: {
+    SMTP_HOST: process.env.SMTP_HOST || 'smtp.example.com',
+    SMTP_PORT: process.env.SMTP_PORT || '587',
+    SMTP_USER: process.env.SMTP_USER || 'user@example.com',
+    SMTP_PASSWORD: process.env.SMTP_PASSWORD || 'default-password',
+  },s = {
   reactStrictMode: true,
   output: 'standalone',
   images: {

pages/api/contact.js

@@ -8,11 +8,19 @@ export default async function handler(req, res) {
   try {
     const { name, email, message } = req.body;
 
-    // Nutze deine eigenen SMTP-Daten aus .env.local
+    // Prüfe ob SMTP konfiguriert ist
+    if (!process.env.SMTP_HOST || !process.env.SMTP_USER || !process.env.SMTP_PASSWORD) {
+      console.log('SMTP not configured, logging message instead:', { name, email, message });
+      return res.status(200).json({ 
+        message: 'Message logged (SMTP not configured)',
+        debug: { name, email, message }
+      });
+    }
+
     const transporter = nodemailer.createTransport({
       host: process.env.SMTP_HOST,
       port: Number(process.env.SMTP_PORT) || 587,
-      secure: Number(process.env.SMTP_PORT) === 465, // true für Port 465 (SSL), sonst false (STARTTLS)
+      secure: Number(process.env.SMTP_PORT) === 465,
       auth: {
         user: process.env.SMTP_USER,
         pass: process.env.SMTP_PASSWORD,