import React from 'react'
import { createRoot } from 'react-dom/client'
import App from './App.jsx'
import './styles.css'

// Register the service worker (PWA shell) only in production builds.
// In dev, the SW would cache-first stale HMR modules and cause blank pages.
if ('serviceWorker' in navigator && import.meta.env.PROD) {
  window.addEventListener('load', () => {
    navigator.serviceWorker.register('./sw.js').catch(() => {
      /* SW is progressive enhancement; never block the app on it */
    })
  })
}

createRoot(document.getElementById('root')).render(
  <React.StrictMode>
    <App />
  </React.StrictMode>
)