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

    # Compression
    gzip on;
    gzip_types text/html text/css application/javascript image/svg+xml application/xml;
    gzip_min_length 512;

    # En-têtes de sécurité
    add_header X-Content-Type-Options nosniff always;
    add_header X-Frame-Options DENY 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:; style-src 'self'; font-src 'self'; script-src 'self' 'unsafe-inline'; form-action 'self'; frame-ancestors 'none'" always;

    # Cache long pour les ressources statiques, court pour le HTML
    location /assets/ {
        add_header Cache-Control "public, max-age=31536000, immutable";
    }
    location / {
        add_header Cache-Control "public, max-age=600";
        try_files $uri $uri/ $uri.html =404;
    }

    # Le formulaire de contact : voir README (à router vers un backend ou Zammad)
    location /api/contact {
        return 501;
    }
}