ミニマリストのメガメニューコンポーネント

<nav class="bg-white dark:bg-gray-900 shadow-md">
  <div class="container mx-auto px-6 py-3">
    <div class="flex justify-between items-center">
      <a href="#" class="text-2xl font-bold text-gray-800 dark:text-white">Logo</a>
      <div class="hidden lg:flex lg:items-center">
        <a href="#" class="text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-3 py-2">Home</a>
        <div class="relative group">
          <button class="text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-3 py-2 focus:outline-none">Products</button>
          <div class="absolute left-0 mt-0 w-64 bg-white dark:bg-gray-800 rounded-md shadow-lg opacity-0 invisible group-hover:opacity-100 group-hover:visible transition-all duration-300">
            <a href="#" class="block px-4 py-2 text-gray-800 dark:text-white hover:bg-gray-200 dark:hover:bg-gray-700">Product 1</a>
            <a href="#" class="block px-4 py-2 text-gray-800 dark:text-white hover:bg-gray-200 dark:hover:bg-gray-700">Product 2</a>
            <a href="#" class="block px-4 py-2 text-gray-800 dark:text-white hover:bg-gray-200 dark:hover:bg-gray-700">Product 3</a>
          </div>
        </div>
        <div class="relative group">
          <button class="text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-3 py-2 focus:outline-none">Services</button>
          <div class="absolute left-0 mt-0 w-64 bg-white dark:bg-gray-800 rounded-md shadow-lg opacity-0 invisible group-hover:opacity-100 group-hover:visible transition-all duration-300">
            <a href="#" class="block px-4 py-2 text-gray-800 dark:text-white hover:bg-gray-200 dark:hover:bg-gray-700">Service 1</a>
            <a href="#" class="block px-4 py-2 text-gray-800 dark:text-white hover:bg-gray-200 dark:hover:bg-gray-700">Service 2</a>
            <a href="#" class="block px-4 py-2 text-gray-800 dark:text-white hover:bg-gray-200 dark:hover:bg-gray-700">Service 3</a>
          </div>
        </div>
        <a href="#" class="text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-3 py-2">Contact</a>
      </div>
      <button class="lg:hidden text-gray-800 dark:text-white focus:outline-none">
        <svg class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16m-4 6h4"></path>
        </svg>
      </button>
    </div>
    <div class="lg:hidden mt-3">
      <a href="#" class="block text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-2 py-1">Home</a>
      <a href="#" class="block text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-2 py-1">Products</a>
      <a href="#" class="block text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-2 py-1">Services</a>
      <a href="#" class="block text-gray-800 dark:text-white hover:text-gray-700 dark:hover:text-gray-300 px-2 py-1">Contact</a>
    </div>
  </div>
</nav>