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

    # Sécurité de base
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "geolocation=(), microphone=(), camera=()" always;
    server_tokens off;

    # Compression
    gzip on;
    gzip_vary on;
    gzip_min_length 256;
    gzip_types text/plain text/css text/xml application/xml application/rss+xml application/javascript application/json image/svg+xml;

    # Cache long pour assets immutables (Astro hash les fichiers)
    location /_astro/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Cache modéré pour images/fonts
    location ~* \.(?:jpg|jpeg|gif|png|ico|svg|woff2?|ttf)$ {
        expires 30d;
        add_header Cache-Control "public";
        access_log off;
    }

    # RSS
    location = /rss.xml {
        add_header Content-Type "application/rss+xml; charset=utf-8";
        expires 10m;
    }

    # Sitemap
    location = /sitemap-index.xml {
        add_header Content-Type "application/xml; charset=utf-8";
        expires 1d;
    }
    location = /sitemap-0.xml {
        add_header Content-Type "application/xml; charset=utf-8";
        expires 1d;
    }

    # SPA-style fallback (Astro génère des dossiers index.html, donc try_files suffit)
    location / {
        try_files $uri $uri/ $uri.html $uri/index.html =404;
    }

    # 404 propre
    error_page 404 /404.html;
}