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

    # 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 Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 256;
    gzip_types
        text/plain
        text/css
        text/javascript
        application/javascript
        application/json
        application/xml
        image/svg+xml
        font/woff2;

    # Astro hashed assets — immutable cache
    location /_astro/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Static files
    location ~* \.(ico|svg|png|jpg|jpeg|webp|gif|woff2?|ttf|eot)$ {
        expires 30d;
        add_header Cache-Control "public";
        access_log off;
    }

    # CSS/JS
    location ~* \.(css|js)$ {
        expires 7d;
        add_header Cache-Control "public";
    }

    # Main location — clean URLs (Astro generates /page/index.html)
    location / {
        try_files $uri $uri/ $uri.html /index.html =404;
    }

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

    # Custom error pages
    error_page 404 /404.html;
    location = /404.html {
        internal;
    }
}