der-t border-gray-200 dark:border-gray-700">
              <button disabled
                      class="inline-flex items-center justify-center bg-gray-400 text-white font-medium py-2 px-6 rounded-lg cursor-not-allowed opacity-70"
                      aria-label="AI Study Assistant feature coming soon">
                <i class="fas fa-clock mr-2" aria-hidden="true"></i>Coming Soon
              </button>
              <div class="bg-blue-100 dark:bg-blue-900 text-blue-800 dark:text-blue-200 text-xs px-3 