セッション タイムアウト警告コンポーネント

<div class="fixed inset-0 z-50 flex items-center justify-center p-4 bg-gray-900/50 dark:bg-gray-900/80 backdrop-blur-sm">
  <div class="relative w-full max-w-md p-8 overflow-hidden bg-white rounded-3xl shadow-2xl dark:bg-gray-800 transform transition-all duration-300 ease-out sm:p-10 lg:p-12 animate-fade-in-up">
    <div class="absolute inset-0 z-0 flex items-center justify-center pointer-events-none opacity-5 dark:opacity-10">
      <svg class="w-full h-full text-blue-300 dark:text-blue-600 animate-pulse-slow" viewBox="0 0 200 200" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
        <path d="M100 0C44.77 0 0 44.77 0 100s44.77 100 100 100 100-44.77 100-100S155.23 0 100 0zm0 10c49.71 0 90 40.29 90 90s-40.29 90-90 90-90-40.29-90-90S50.29 10 100 10zm-50 40c-2.76 0-5 2.24-5 5S47.14 60 50 60s5-2.24 5-5-2.24-5-5-5zm100 0c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5zM50 150c-2.76 0-5 2.24-5 5S47.14 160 50 160s5-2.24 5-5-2.24-5-5-5zm100 0c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5zM100 50c-2.76 0-5 2.24-5 5S97.14 60 100 60s5-2.24 5-5-2.24-5-5-5zM100 150c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5zM40 100c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5zM160 100c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5z"></path>
      </svg>
    </div>

    <div class="relative z-10 text-center">
      <div class="flex items-center justify-center w-16 h-16 mx-auto mb-6 bg-blue-100 rounded-full dark:bg-blue-600/20">
        <svg class="w-8 h-8 text-blue-600 dark:text-blue-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="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"></path>
        </svg>
      </div>
      <h3 class="mb-4 text-2xl font-bold text-gray-800 dark:text-gray-100 sm:text-3xl lg:text-4xl">
        Session Expiring Soon
      </h3>
      <p class="mb-6 text-base text-gray-600 dark:text-gray-300 sm:text-lg">
        For your security, your session will expire in <strong class="text-blue-600 dark:text-blue-400 font-extrabold text-xl">1:59</strong>.
      </p>

      <div class="w-32 h-32 mx-auto mb-8 flex items-center justify-center rounded-full bg-blue-50 dark:bg-blue-600/10 text-blue-700 dark:text-blue-300 border-4 border-blue-200 dark:border-blue-700 shadow-inner overflow-hidden animate-scale-bounce">
        <span class="text-5xl font-extrabold leading-none" id="countdown-timer">1:59</span>
      </div>

      <div class="flex flex-col gap-4 sm:flex-row sm:justify-center">
        <button type="button" class="flex-1 px-6 py-3 text-lg font-semibold text-white bg-blue-600 rounded-full shadow-lg hover:bg-blue-700 dark:bg-blue-700 dark:hover:bg-blue-600 focus:outline-none focus:ring-4 focus:ring-blue-300 dark:focus:ring-blue-800 transition transform duration-200 ease-in-out hover:scale-105 active:scale-95 animate-fade-in">
          <span class="relative flex items-center justify-center">
            <svg class="w-5 h-5 mr-2 -ml-1 animate-spin" 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 4v5h.582m15.356 2A8.001 8.001 0 004 12v1a8 8 0 0015.356 2M16 16v2m-6 0h6m-6 0h6"></path>
            </svg>
            Extend Session
          </span>
        </button>
        <button type="button" class="flex-1 px-6 py-3 text-lg font-semibold text-gray-800 bg-gray-200 rounded-full shadow-md hover:bg-gray-300 dark:bg-gray-600 dark:text-gray-100 dark:hover:bg-gray-500 focus:outline-none focus:ring-4 focus:ring-gray-300 dark:focus:ring-gray-700 transition transform duration-200 ease-in-out hover:scale-105 active:scale-95 animate-fade-in delay-100">
          Log Out Now
        </button>
      </div>

      <p class="mt-8 text-sm text-gray-500 dark:text-gray-400">
        Questions? Please contact <a href="#" class="text-blue-600 hover:underline dark:text-blue-400">support</a>.
      </p>
    </div>
  </div>
</div>

<style>
  @keyframes fade-in-up {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  @keyframes scale-bounce {
    0%, 100% {
      transform: scale(1);
    }
    50% {
      transform: scale(1.05);
    }
  }

  @keyframes pulse-slow {
    0%, 100% {
      opacity: 0.05;
    }
    50% {
      opacity: 0.15;
    }
  }

  .animate-fade-in-up {
    animation: fade-in-up 0.5s ease-out forwards;
  }

  .animate-scale-bounce {
    animation: scale-bounce 2s ease-in-out infinite;
  }

  .animate-pulse-slow {
    animation: pulse-slow 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  }

  .animate-fade-in {
    animation: fade-in-up 0.6s ease-out forwards;
    animation-delay: 0.2s;
  }

  .animate-fade-in.delay-100 {
    animation-delay: 0.3s;
  }
</style>