/* NAVIGATION BUTTONS FOR READING PAGES */
.nav-reading-container {
  display: flex;
  justify-content: space-between;
  max-width: 800px;
  margin: 2rem auto 1rem auto;
  padding: 0 1rem;
}

.nav-reading-btn {
  padding: 12px 24px;
  background-color: #800;    
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: background-color 0.3s ease, transform 0.2s ease;
  display: inline-flex;
  align-items: center;
  font-size: 1rem;
}

.nav-reading-btn:hover {
  background-color: #495057;     /* Hover nhẹ */
  transform: translateY(-2px);
}

.nav-reading-btn:active {
  transform: scale(0.98);
}

.nav-reading-btn.disabled {
  background-color: #ced4da;
  color: #6c757d;
  cursor: not-allowed;
  pointer-events: none;
}