user appuser;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    
    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';
    
    access_log /var/log/nginx/access.log main;
    
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    
    # Configuración de seguridad
    server_tokens off;
    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;
    add_header X-XSS-Protection "1; mode=block" always;
    
    server {
        listen 3000;
        server_name localhost;
        root /usr/share/nginx/html;
        index index.html;
        
        # Configuración de seguridad adicional
        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;
        add_header X-XSS-Protection "1; mode=block" always;
        
        # Manejo de archivos estáticos
        location ~* \.(css|js|ico|png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
            add_header X-Frame-Options "SAMEORIGIN" always;
            add_header X-Content-Type-Options "nosniff" always;
        }
        
        # Manejo de HTML
        location / {
            try_files $uri $uri/ /index.html;
            add_header X-Frame-Options "SAMEORIGIN" always;
            add_header X-Content-Type-Options "nosniff" always;
        }
        
        # Negar acceso a archivos ocultos
        location ~ /\. {
            deny all;
        }
    }
}