server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    charset utf-8;

    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 1024;
    gzip_types
        text/plain
        text/css
        text/javascript
        application/javascript
        application/json
        application/xml
        application/rss+xml
        image/svg+xml;

    # Pi-hole v6 REST API: /pihole/... wird auf den Pi-hole-Host weitergeleitet.
    # Der Browser spricht nur diesen gleichen Origin an (kein CORS/Mixed-Content).
    location /pihole/ {
        proxy_pass http://10.0.0.60/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    location / {
        try_files $uri $uri/ /index.html =404;
    }

    location ~* \.(?:js|css|png|jpg|jpeg|gif|ico|svg|woff2?)$ {
        expires 30d;
        add_header Cache-Control "public, max-age=2592000, immutable";
        try_files $uri =404;
    }

    location = /index.html {
        add_header Cache-Control "no-store, no-cache, must-revalidate, proxy-revalidate";
        expires -1;
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        internal;
    }
}