server {
    listen 80;
    listen  [::]:80;
    server_name localhost;

    # Root directory for the built React app
    root /usr/share/nginx/html;

    # Serve index.html for all routes
    location / {
        try_files $uri /index.html;
    }

    # Serve static files directly
    location ~* \.(?:ico|css|js|gif|jpg|jpeg|png|svg|woff2?|eot|ttf|otf)$ {
        expires max;
        add_header Cache-Control "public";
    }

    # Optional: Log errors
    error_log /var/log/nginx/error.log warn;
    access_log /var/log/nginx/access.log;
}