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

    # Serve static assets
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Proxy data API to backend
    location /data/ {
        proxy_pass http://backend:8080/data/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        add_header Access-Control-Allow-Origin *;
    }

    location /healthz {
        proxy_pass http://backend:8080/healthz;
    }
}