메가 메뉴 컴포넌트

<nav class="bg-gradient-to-r from-purple-500 via-pink-500 to-red-500 dark:from-gray-800 dark:via-gray-700 dark:to-gray-600 shadow-xl">
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    <div class="text-white text-2xl font-bold">BlogName</div>
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              <a href="#" class="block text-gray-800 dark:text-white hover:text-purple-600 dark:hover:text-purple-400 transition duration-300">Technology</a>
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              <a href="#" class="block text-gray-800 dark:text-white hover:text-purple-600 dark:hover:text-purple-400 transition duration-300">Food</a>
              <a href="#" class="block text-gray-800 dark:text-white hover:text-pink-600 dark:hover:text-pink-400 transition duration-300">Fashion</a>
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      <a href="#" class="text-white hover:text-gray-200 transition duration-300">About</a>
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    <a href="#" class="block text-white hover:text-gray-200 transition duration-300 py-2">Home</a>
    <div class="relative group">
      <button class="block text-white hover:text-gray-200 transition duration-300 py-2">Categories</button>
      <div class="relative z-10 invisible group-hover:visible bg-white dark:bg-gray-700 shadow-lg rounded-md p-4 mt-2 transition duration-300">
        <div class="grid grid-cols-1 gap-2">
          <a href="#" class="block text-gray-800 dark:text-white hover:text-purple-600 dark:hover:text-purple-400 transition duration-300">Technology</a>
          <a href="#" class="block text-gray-800 dark:text-white hover:text-pink-600 dark:hover:text-pink-400 transition duration-300">Lifestyle</a>
          <a href="#" class="block text-gray-800 dark:text-white hover:text-red-600 dark:hover:text-red-400 transition duration-300">Travel</a>
          <a href="#" class="block text-gray-800 dark:text-white hover:text-purple-600 dark:hover:text-purple-400 transition duration-300">Food</a>
          <a href="#" class="block text-gray-800 dark:text-white hover:text-pink-600 dark:hover:text-pink-400 transition duration-300">Fashion</a>
          <a href="#" class="block text-gray-800 dark:text-white hover:text-red-600 dark:hover:text-red-400 transition duration-300">Sports</a>
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    <a href="#" class="block text-white hover:text-gray-200 transition duration-300 py-2">About</a>
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