Table of Contents Component

<div class="p-4 sm:p-6 lg:p-8 bg-gray-100 dark:bg-gray-900 min-h-screen flex items-center justify-center font-sans">
  <div class="w-full max-w-sm sm:max-w-md lg:max-w-lg bg-gradient-to-br from-amber-800 via-orange-900 to-red-900 dark:from-gray-800 dark:via-gray-900 dark:to-black rounded-lg shadow-xl overflow-hidden p-6 relative group transform hover:scale-[1.01] transition-all duration-300 ease-in-out border-2 border-transparent hover:border-amber-500/50 dark:hover:border-purple-600/50">

    <!-- Glow Effect Overlay -->
    <div class="absolute inset-0 bg-amber-500/20 dark:bg-purple-500/20 rounded-lg opacity-0 group-hover:opacity-100 group-hover:blur-sm transition-opacity duration-500 pointer-events-none"></div>
    <div class="absolute inset-0.5 bg-amber-300/10 dark:bg-purple-300/10 rounded-lg opacity-0 group-hover:opacity-100 group-hover:blur-md transition-opacity duration-700 pointer-events-none"></div>

    <div class="relative z-10">
      <h2 class="text-2xl sm:text-3xl font-extrabold text-amber-200 dark:text-purple-300 mb-6 text-center tracking-wide" style="text-shadow: 0 0 10px rgba(251, 191, 36, 0.7), 0 0 20px rgba(251, 191, 36, 0.4); dark:text-shadow: 0 0 10px rgba(168, 85, 247, 0.7), 0 0 20px rgba(168, 85, 247, 0.4);">
        GALLERY SECTIONS
      </h2>

      <nav aria-label="Gallery Sections Table of Contents">
        <ul class="space-y-4">
          <li>
            <a href="#landscapes" class="block p-3 rounded-md text-amber-100 dark:text-purple-200 hover:bg-amber-700/60 dark:hover:bg-purple-800/60 transition-colors duration-200 relative overflow-hidden group/item focus:outline-none focus:ring-2 focus:ring-amber-400 dark:focus:ring-purple-400"
               style="box-shadow: 0 0 5px rgba(251, 191, 36, 0.3); dark:box-shadow: 0 0 5px rgba(168, 85, 247, 0.3);">
              <span class="relative z-10 font-medium text-lg leading-tight block">
                Landscapes
                <span class="absolute top-0 left-0 w-full h-full bg-amber-500/30 dark:bg-purple-500/30 blur-md opacity-0 group-hover/item:opacity-70 transition-opacity duration-300 glow-pulse"></span>
              </span>
            </a>
          </li>
          <li>
            <a href="#portraits" class="block p-3 rounded-md text-amber-100 dark:text-purple-200 hover:bg-amber-700/60 dark:hover:bg-purple-800/60 transition-colors duration-200 relative overflow-hidden group/item focus:outline-none focus:ring-2 focus:ring-amber-400 dark:focus:ring-purple-400"
               style="box-shadow: 0 0 5px rgba(251, 191, 36, 0.3); dark:box-shadow: 0 0 5px rgba(168, 85, 247, 0.3);">
              <span class="relative z-10 font-medium text-lg leading-tight block">
                Portraits
                <span class="absolute top-0 left-0 w-full h-full bg-amber-500/30 dark:bg-purple-500/30 blur-md opacity-0 group-hover/item:opacity-70 transition-opacity duration-300 glow-pulse"></span>
              </span>
            </a>
          </li>
          <li>
            <a href="#wildlife" class="block p-3 rounded-md text-amber-100 dark:text-purple-200 hover:bg-amber-700/60 dark:hover:bg-purple-800/60 transition-colors duration-200 relative overflow-hidden group/item focus:outline-none focus:ring-2 focus:ring-amber-400 dark:focus:ring-purple-400"
               style="box-shadow: 0 0 5px rgba(251, 191, 36, 0.3); dark:box-shadow: 0 0 5px rgba(168, 85, 247, 0.3);">
              <span class="relative z-10 font-medium text-lg leading-tight block">
                Wildlife
                <span class="absolute top-0 left-0 w-full h-full bg-amber-500/30 dark:bg-purple-500/30 blur-md opacity-0 group-hover/item:opacity-70 transition-opacity duration-300 glow-pulse"></span>
              </span>
            </a>
          </li>
          <li>
            <a href="#abstract" class="block p-3 rounded-md text-amber-100 dark:text-purple-200 hover:bg-amber-700/60 dark:hover:bg-purple-800/60 transition-colors duration-200 relative overflow-hidden group/item focus:outline-none focus:ring-2 focus:ring-amber-400 dark:focus:ring-purple-400"
               style="box-shadow: 0 0 5px rgba(251, 191, 36, 0.3); dark:box-shadow: 0 0 5px rgba(168, 85, 247, 0.3);">
              <span class="relative z-10 font-medium text-lg leading-tight block">
                Abstract
                <span class="absolute top-0 left-0 w-full h-full bg-amber-500/30 dark:bg-purple-500/30 blur-md opacity-0 group-hover/item:opacity-70 transition-opacity duration-300 glow-pulse"></span>
              </span>
            </a>
          </li>
          <li>
            <a href="#events" class="block p-3 rounded-md text-amber-100 dark:text-purple-200 hover:bg-amber-700/60 dark:hover:bg-purple-800/60 transition-colors duration-200 relative overflow-hidden group/item focus:outline-none focus:ring-2 focus:ring-amber-400 dark:focus:ring-purple-400"
               style="box-shadow: 0 0 5px rgba(251, 191, 36, 0.3); dark:box-shadow: 0 0 5px rgba(168, 85, 247, 0.3);">
              <span class="relative z-10 font-medium text-lg leading-tight block">
                Events
                <span class="absolute top-0 left-0 w-full h-full bg-amber-500/30 dark:bg-purple-500/30 blur-md opacity-0 group-hover/item:opacity-70 transition-opacity duration-300 glow-pulse"></span>
              </span>
            </a>
          </li>
        </ul>
      </nav>

      <div class="mt-6 text-center text-amber-300 dark:text-purple-400 text-sm opacity-80" style="text-shadow: 0 0 5px rgba(251, 191, 36, 0.3); dark:text-shadow: 0 0 5px rgba(168, 85, 247, 0.3);">
        <p>&copy; 2023 Photonix Photography</p>
      </div>
    </div>
  </div>
</div>

<style>
  /* This is a simple keyframe animation for the glow-pulse effect on hover */
  /* It's included directly as Tailwind doesn't support custom keyframe animations through classes alone */
  @keyframes glow-pulse {
    0% { transform: scale(0.95); opacity: 0.7; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.7; }
  }

  .glow-pulse {
    animation: glow-pulse 1.5s infinite alternate;
  }

  /* Dark mode specific glow-pulse for visual distinctiveness */
  .dark .glow-pulse {
    animation: glow-pulse-dark 1.5s infinite alternate;
  }

  @keyframes glow-pulse-dark {
    0% { transform: scale(0.95); opacity: 0.7; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.7; }
  }
</style>