pages/_app.js

import '../styles/globals.css';
import ChatHeader from '../components/ChatHeader';

function MyApp({ Component, pageProps }) {
  return (
    <div className="min-h-screen flex flex-col">
      <ChatHeader />
      <main className="flex-1">
        <Component {...pageProps} />
      </main>
    </div>
  );
}

export default MyApp;