server {
    listen 80;

    server_name _;
    server_tokens off;

    root /usr/share/nginx/html;

    index index.html;

    # Baseline security hardening for a static SPA.
    add_header X-Frame-Options "DENY" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
    add_header Content-Security-Policy "default-src 'self'; img-src 'self' data: https:; script-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self' data:; connect-src 'self' https://backend.beammp.com; object-src 'none'; base-uri 'self'; frame-ancestors 'none'" always;

    location ^~ /installer/ {
        try_files $uri =404;
    }

    location / {
        # SPA fallback: serve index.html for non-file routes so Vue Router can render NotFound
        try_files $uri $uri/ /index.html;
    }

    # Let real 404s for assets return 404s; Vue handles route-level 404 via the SPA fallback above.

    location /static/ {
        # Serve static files directly
        expires max;
        access_log off;
    }
}