.sidebar {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: var(--sidebar-width);
    z-index: 90;
  }
  
  .sidebar-buttons {
    display: flex;
    flex-direction: column;
    background-color: var(--dark-surface);
    border-radius: 8px 0 0 8px;
    padding: 1rem 0;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
  }
  
  .sidebar-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.75rem;
    color: var(--muted-text);
    transition: all var(--transition-speed) ease;
    width: 100%;
  }
  
  .sidebar-btn:hover {
    color: var(--primary-light);
    background-color: rgba(255, 255, 255, 0.05);
  }
  
  .sidebar-btn .icon {
    margin-bottom: 0.25rem;
  }
  
  .sidebar-btn span {
    font-size: 0.7rem;
    margin-top: 0.25rem;
  }
  
  @media (max-width: 768px) {
    .sidebar {
      top: auto;
      bottom: 0;
      left: 0;
      right: 0;
      width: 100%;
      transform: none;
    }
    
    .sidebar-buttons {
      flex-direction: row;
      justify-content: space-around;
      border-radius: 8px 8px 0 0;
      padding: 0.5rem 0;
    }
    
    .sidebar-btn {
      padding: 0.5rem;
    }
  }