Neumorphic Mega Menuコンポーネント

<nav class="neumorphic-mega-menu bg-gray-200 dark:bg-gray-800 transition duration-500 ease-in-out">
  <div class="container mx-auto px-4 py-4 flex justify-between items-center">
    <div class="text-xl font-bold text-gray-800 dark:text-white">My Logo</div>
    <div class="hidden md:flex space-x-8">
      <a href="#" class="text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition duration-300 ease-in-out">Home</a>
      <div class="group relative">
        <button class="text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition duration-300 ease-in-out">Products</button>
        <div class="absolute left-0 mt-2 w-64 bg-gray-200 dark:bg-gray-700 rounded-lg shadow-xl opacity-0 invisible group-hover:opacity-100 group-hover:visible transform scale-95 group-hover:scale-100 transition duration-300 ease-in-out">
          <a href="#" class="block px-4 py-2 text-gray-800 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600">Category 1</a>
          <a href="#" class="block px-4 py-2 text-gray-800 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600">Category 2</a>
          <a href="#" class="block px-4 py-2 text-gray-800 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600">Category 3</a>
        </div>
      </div>
      <a href="#" class="text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition duration-300 ease-in-out">About</a>
      <a href="#" class="text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition duration-300 ease-in-out">Contact</a>
    </div>
    <button class="md:hidden text-gray-700 dark:text-gray-300 focus:outline-none">
      <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16m-7 6h7"></path></svg>
    </button>
  </div>
  <div class="md:hidden mobile-menu hidden">
    <a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600">Home</a>
    <div class="group relative">
      <button class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600 w-full text-left">Products</button>
      <div class="pl-4">
        <a href="#" class="block px-4 py-2 text-sm text-gray-800 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600">Category 1</a>
        <a href="#" class="block px-4 py-2 text-sm text-gray-800 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600">Category 2</a>
        <a href="#" class="block px-4 py-2 text-sm text-gray-800 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600">Category 3</a>
      </div>
    </div>
    <a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600">About</a>
    <a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600">Contact</a>
  </div>
</nav>

<style>
.neumorphic-mega-menu {
  box-shadow: 5px 5px 10px #b0b0b0, -5px -5px 10px #ffffff;
}

.dark .neumorphic-mega-menu {
  box-shadow: 5px 5px 10px #444444, -5px -5px 10px #333333;
}
</style>