server {
    listen 3000;
    server_name _;

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

    # Health check endpoint
    location /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }

    # Serve static files
    location / {
        try_files $uri $uri/ /index.html;

        # Allow Firebase Auth popup to communicate back
        add_header Cross-Origin-Opener-Policy "same-origin-allow-popups" always;
    }

    # Disable logging for favicon
    location = /favicon.ico {
        access_log off;
        log_not_found off;
    }

    # Enable gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml+rss application/javascript application/json;
}