server {
    listen 80;
    server_name _;

    # Serve frontend static files
    root /usr/share/nginx/html;
    index index.html;

    # API proxy to Node backend
    location /api/ {
        proxy_pass http://backend:3000/api/;
        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;
    }

    # Static files - SPA fallback
    location / {
        try_files $uri $uri/ /index.html;
    }
}