nuzlocke-tracker/frontend/src/components/Layout.tsx

import { Link, Outlet } from 'react-router-dom'

export function Layout() {
  return (
    <div className="min-h-screen bg-gray-50 dark:bg-gray-900 text-gray-900 dark:text-gray-100">
      <nav className="bg-white dark:bg-gray-800 shadow-sm">
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <div className="flex justify-between h-16">
            <div className="flex items-center">
              <Link to="/" className="text-xl font-bold">
                Nuzlocke Tracker
              </Link>
            </div>
            <div className="flex items-center space-x-4">
              <Link
                to="/runs/new"
                className="px-3 py-2 rounded-md text-sm font-medium hover:bg-gray-100 dark:hover:bg-gray-700"
              >
                New Run
              </Link>
              <Link
                to="/dashboard"
                className="px-3 py-2 rounded-md text-sm font-medium hover:bg-gray-100 dark:hover:bg-gray-700"
              >
                Dashboard
              </Link>
              <Link
                to="/encounters"
                className="px-3 py-2 rounded-md text-sm font-medium hover:bg-gray-100 dark:hover:bg-gray-700"
              >
                Encounters
              </Link>
            </div>
          </div>
        </div>
      </nav>
      <main>
        <Outlet />
      </main>
    </div>
  )
}