nginx.conf

server {
    listen 80;
    server_name voltchainhub.org www.voltchainhub.org _;

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

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

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    # Cache static assets
    location ~* \.(css|js|ico|png|jpg|jpeg|svg|woff2?)$ {
        expires 7d;
        add_header Cache-Control "public, immutable";
    }

    location / {
        try_files $uri $uri/ =404;
    }

    # Health check
    location /health {
        return 200 'OK';
        add_header Content-Type text/plain;
    }
}