import { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import App from "./App";
import "./styles/index.css";

// PWA: register the service worker (production only — the dev server's caching
// would otherwise serve stale modules).
if ("serviceWorker" in navigator && import.meta.env.PROD) {
  window.addEventListener("load", () => {
    navigator.serviceWorker.register("/sw.js").catch(() => {
      // Non-fatal: the app still works without the offline shell.
    });
  });
}

const container = document.getElementById("root");
if (!container) throw new Error("#root not found");

createRoot(container).render(
  <StrictMode>
    <App />
  </StrictMode>
);