CAPTCHA Component - Candy Material Design

<div class="p-4 dark:bg-gray-900 min-h-screen flex items-center justify-center font-sans">
  <div class="max-w-md w-full bg-white dark:bg-gray-800 rounded-lg shadow-xl overflow-hidden transform transition duration-300 hover:shadow-2xl dark:shadow-md">
    <div class="p-6 sm:p-8 space-y-6">
      <div class="flex items-center justify-between">
        <h2 class="text-2xl font-bold text-pink-600 dark:text-pink-400">I'm not a robot</h2>
        <div class="w-12 h-12 flex items-center justify-center bg-gradient-to-br from-pink-400 to-purple-500 rounded-full shadow-lg">
          <svg class="w-8 h-8 text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
            <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path>
          </svg>
        </div>
      </div>

      <div class="flex flex-col sm:flex-row items-center gap-4">
        <div class="flex-shrink-0">
          <button type="button" class="w-24 h-24 sm:w-28 sm:h-28 bg-white dark:bg-gray-700 border-4 border-pink-300 dark:border-pink-500 rounded-lg shadow-inner flex items-center justify-center focus:outline-none focus:ring-4 focus:ring-pink-200 dark:focus:ring-pink-600 transition duration-200 ease-in-out transform active:scale-95">
            <div class="w-16 h-16 sm:w-20 sm:h-20 bg-mint-green-300 dark:bg-mint-green-500 rounded-md shadow-md"></div>
          </button>
        </div>
        <div class="flex-grow text-gray-700 dark:text-gray-300">
          <p class="text-sm text-center sm:text-left">Please click the checkbox to confirm you are not a robot.</p>
          <p class="mt-2 text-xs text-gray-500 dark:text-gray-400 text-center sm:text-left">This helps protect our event from spam and abuse.</p>
        </div>
      </div>

      <div class="flex justify-end pt-4 border-t border-gray-200 dark:border-gray-700">
        <a href="#" class="text-xs text-mint-green-600 dark:text-mint-green-400 hover:underline transition duration-200">
          Privacy & Terms
        </a>
      </div>
    </div>
  </div>
  <style>
    /* Custom 'Mint Green' color for demonstration, you can extend your tailwind.config.js */
    .bg-mint-green-300 {
      background-color: #A7F0C7; /* A lighter, cheerful mint */
    }
    .dark\:bg-mint-green-500 {
      background-color: #6EE7B7; /* A slightly darker mint for dark mode */
    }
    .text-mint-green-600 {
      color: #059669; /* A vivid mint green */
    }
    .dark\:text-mint-green-400 {
      color: #34D399; /* A brighter mint green for dark mode */
    }
  </style>
</div>