events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    
    # Simple server for HTTP challenges
    server {
        listen 80;
        server_name _;
        
        root /var/www/html;
        
        # ACME challenge location
        location /.well-known/acme-challenge/ {
            root /var/www/html;
            try_files $uri =404;
        }
        
        # Default location
        location / {
            return 200 "Certbot HTTP Challenge Server";
            add_header Content-Type text/plain;
        }
    }
}