/* 侧边栏样式 */
.article .sidebar {
  border-right: 1px solid #dee2e6;
  width: 300px;
  min-height: calc(100vh - 60px);
  padding:0 5px;
}

.article .sidebar .nav-link {
  color: #495057;
  padding: 0.5rem 0.75rem;
  border-radius: 0.25rem;
  margin-bottom: 0.125rem;
  font-size: 0.875rem;
  transition: all 0.2s ease-in-out;
}

.article .sidebar .nav-link:hover {
  color: #212529;
  background-color: #e9ecef;
  text-decoration: none;
}

.article .sidebar .nav-link.active {
  color: #fff;
  background-color: #007bff;
}

.article .sidebar .nav-link.active:hover {
  color: #fff;
  background-color: #0056b3;
}

/* 文档导航样式 */
.article .sidebar .doc-nav .nav-link {
  color: #495057;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  margin-bottom: 0.125rem;
  font-size: 0.875rem;
}

.article .sidebar .doc-nav .nav-link:hover {
  color: #0d6efd;
  background-color: #f8f9fa;
}

.article .sidebar .doc-nav .nav-link.active {
  color: #0d6efd;
  background-color: #e7f1ff;
  font-weight: 500;
}

.article .sidebar .doc-nav .nav-link i {
  margin-right: 0.2rem;
  width: 1rem;
  text-align: center;
}

.article .sidebar .doc-nav .badge {
  font-size: 0.75rem;
}

.article .sidebar .doc-nav .nav-item ul {
  border-left: 1px solid #dee2e6;
  margin-left: 0.5rem;
  padding-left: 0.5rem;
}

.article .sidebar .doc-nav .nav-item ul .nav-link {
  font-size: 0.8rem;
  padding: 0.35rem 0.5rem;
}

/* 树形结构缩进 */
.article .sidebar .nav .nav {
  margin-left: 1rem;
  border-left: 1px solid #dee2e6;
  padding-left: 0.5rem;
}

.article .sidebar .nav .nav .nav {
  margin-left: 0.5rem;
}

.article .sidebar .nav .nav .nav .nav {
  margin-left: 0.5rem;
}

.article .sidebar .nav-link .fas.fa-folder {
  color: #ffc107;
}

.article .sidebar .nav-link .fas.fa-file-alt {
  color: #6c757d;
}

/* 徽章样式 */
.article .sidebar .badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
}

/* 搜索框样式 */
.article .sidebar .form-control-sm {
  font-size: 0.875rem;
  padding: 0.375rem 0.75rem;
}

.article .sidebar .btn-sm {
  font-size: 0.875rem;
  padding: 0.375rem 0.75rem;
}

/* 响应式设计 */
@media (max-width: 767.98px) {
  .article .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: 48px 0 0;
    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    width: 280px;
    height: 100vh;
    overflow-y: auto;
  }
  
  .article .sidebar.show {
    transform: translateX(0);
  }
  
  .article .sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1025;
    display: none;
  }
  
  .article .sidebar-backdrop.show {
    display: block;
  }

  .article .sidebar-toggle {
    display: block;
  }
}

@media (min-width: 768px) {
  .article .sidebar-toggle {
    display: none;
  }
}

/* 滚动条样式 */
.article .sidebar::-webkit-scrollbar {
  width: 6px;
}

.article .sidebar::-webkit-scrollbar-track {
  background: #f1f1f1;
}

.article .sidebar::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}

.article .sidebar::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

/* 动画效果 */
.article .sidebar .nav-item {
  transition: all 0.2s ease-in-out;
}

.article .sidebar .nav-link {
  position: relative;
}

.article .sidebar .nav-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: transparent;
  transition: background-color 0.2s ease-in-out;
}

.article .sidebar .nav-link:hover::before {
  background-color: #007bff;
}

.article .sidebar .nav-link.active::before {
  background-color: #fff;
}