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           focus:outline-none focus:ring-4 focus:ring-amber-500/50 dark:focus:ring-amber-300/50
           transition-all duration-150 ease-in-out
           flex items-center justify-center space-x-2 w-16 h-16 sm:w-20 sm:h-20"
    aria-label="Back to top"
  >
    <svg class="w-8 h-8 sm:w-10 sm:h-10 transform -rotate-90" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
      <path stroke-linecap="square" stroke-linejoin="square" stroke-width="3" d="M9 5l7 7-7 7"></path>
    </svg>
  </button>
  <div class="absolute -top-1 -left-1 w-16 h-16 sm:w-20 sm:h-20 border-2 border-stone-900 dark:border-stone-100 pointer-events-none group-active:translate-x-[4px] group-active:translate-y-[4px] transition-all duration-150 ease-in-out"></div>
  <div class="absolute top-1 left-1 w-16 h-16 sm:w-20 sm:h-20 border-2 border-stone-900 dark:border-stone-100 pointer-events-none group-active:translate-x-[4px] group-active:translate-y-[4px] transition-all duration-150 ease-in-out"></div>
</div>
              

                <div class="fixed bottom-4 right-4 z-50">
  <button aria-label="Scroll to top" class="dark:bg-gray-700 dark:hover:bg-gray-600 dark:text-gray-200 dark:shadow-lg focus:outline-none dark:focus:ring-gray-500 rounded-full bg-gray-800 p-3 text-white shadow-md transition-all duration-300 ease-in-out hover:scale-105 hover:bg-gray-700 focus:ring-4 focus:ring-gray-300 active:scale-95 md:p-4 lg:p-5">
    <svg class="h-6 w-6 md:h-7 md:w-7 lg:h-8 lg:w-8" 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="M5 10l7-7m0 0l7 7m-7-7v18"></path>
    </svg>
  </button>
</div>
              

                <div class="flex items-center justify-center min-h-screen bg-gray-100 dark:bg-gray-900">
  <a href="#" class="back-to-top-button relative p-4 rounded-full shadow-neumorphic-light dark:shadow-neumorphic-dark flex items-center justify-center transition-all duration-300 hover:shadow-neumorphic-light-hover dark:hover:shadow-neumorphic-dark-hover"
    aria-label="Back to top">
    <svg class="w-6 h-6 text-indigo-600 dark:text-purple-400" 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="M5 10l7-7m0 0l7 7m-7-7v18"></path>
    </svg>
  </a>
</div>

<style>
  .shadow-neumorphic-light {
    box-shadow: 8px 8px 16px #cbced1, -8px -8px 16px #ffffff;
  }

  .dark .shadow-neumorphic-dark {
    box-shadow: 8px 8px 16px #1a1a1a, -8px -8px 16px #2e2e2e;
  }

  .shadow-neumorphic-light-hover {
    box-shadow: inset 6px 6px 12px #cbced1, inset -6px -6px 12px #ffffff;
  }

  .dark .shadow-neumorphic-dark-hover {
    box-shadow: inset 6px 6px 12px #1a1a1a, inset -6px -6px 12px #2e2e2e;
  }
</style>