Componente de alerta de tiempo de espera de sesión

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      <h3 class="text-lg font-semibold text-gray-800 dark:text-gray-100">세션 타임아웃</h3>
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      <p>보안상의 이유로 회원님의 세션이 곧 만료됩니다. 계속 활동하려면 "세션 연장" 버튼을 클릭해 주세요.</p>
      <p class="mt-2 font-semibold">남은 시간: <span class="text-amber-700 dark:text-amber-400">05:00</span></p>
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