nginx.conf

server {
    listen 80;
    server_name localhost;

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

    # Handle React Router paths
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-cache";
    }

    # Cache static assets
    location /assets {
        expires 1y;
        add_header Cache-Control "public";
    }

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";

    # Compression
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
}