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

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml application/json application/rss+xml image/svg+xml;

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header X-Robots-Tag "index, follow" always;

    # Static assets with long cache
    location ~* \.(css|js|jpg|jpeg|png|gif|ico|svg|woff|woff2|ttf|eot|webp|mp3|mp4|webm|ogg)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # HTML files - no cache for fresh content
    location ~* \.html$ {
        expires -1;
        add_header Cache-Control "no-store, no-cache, must-revalidate";
    }

    # Custom 404 page
    error_page 404 /404.html;

    # Clean URLs - try files, then directories, then 404
    location / {
        try_files $uri $uri/ $uri.html =404;
    }

    # RSS feed
    location = /index.xml {
        types { application/rss+xml xml; }
    }

    # Deny access to hidden files
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }
}