server {
    listen 80;
    server_name _;
    root /usr/share/nginx/html;
    index index.html;

    # Gzip
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    # Backend API proxy (same network namespace via netbird-client)
    # Using 127.0.0.1 instead of localhost to force IPv4 (avoids IPv6 connection issues)
    # Note: proxy_pass without URI preserves URL encoding (important for paths with %2F)
    location /api/ {
        proxy_pass http://127.0.0.1:3001;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        # Always HTTPS since NPM handles SSL termination (required for secure cookies)
        proxy_set_header X-Forwarded-Proto https;
    }

    # Auth routes proxy
    location /auth/ {
        proxy_pass http://127.0.0.1:3001/auth/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        # Always HTTPS since NPM handles SSL termination
        proxy_set_header X-Forwarded-Proto https;
    }

    # WebSocket proxy for Claude sessions
    location /ws {
        proxy_pass http://127.0.0.1:3001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        # Always HTTPS since NPM handles SSL termination
        proxy_set_header X-Forwarded-Proto https;
        proxy_read_timeout 86400;
        proxy_send_timeout 86400;
    }

    # SPA routing for frontend
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Cache static assets
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}