leggen/frontend/src/routes/__root.tsx

import { createRootRoute, Outlet } from "@tanstack/react-router";
import { useState } from "react";
import Sidebar from "../components/Sidebar";
import Header from "../components/Header";

function RootLayout() {
  const [sidebarOpen, setSidebarOpen] = useState(false);

  return (
    <div className="flex h-screen bg-gray-100">
      <Sidebar sidebarOpen={sidebarOpen} setSidebarOpen={setSidebarOpen} />

      {/* Mobile overlay */}
      {sidebarOpen && (
        <div
          className="fixed inset-0 z-40 bg-gray-600 bg-opacity-75 lg:hidden"
          onClick={() => setSidebarOpen(false)}
        />
      )}

      <div className="flex flex-col flex-1 overflow-hidden">
        <Header setSidebarOpen={setSidebarOpen} />
        <main className="flex-1 overflow-y-auto p-6">
          <Outlet />
        </main>
      </div>
    </div>
  );
}

export const Route = createRootRoute({
  component: RootLayout,
});