/* 仿 Element UI 风格 - Bootstrap5 + jQuery | 参考 https://element.eleme.cn */
:root {
  --el-font-size: 14px;
  --el-color-primary: #409EFF;
  --el-color-success: #67C23A;
  --el-color-warning: #E6A23C;
  --el-color-danger: #F56C6C;
  --el-color-info: #909399;
  --el-text-primary: #303133;
  --el-text-regular: #606266;
  --el-text-secondary: #909399;
  --el-border-base: #DCDFE6;
  --el-border-light: #E4E7ED;
  --el-border-lighter: #EBEEF5;
  --el-fill-base: #F5F7FA;
  --el-bg-page: #F5F7FA;
  --el-sidebar: #304156;
  --el-border-radius: 4px;
}

html, body { font-size: var(--el-font-size) !important; color: var(--el-text-primary); }
body { font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif; }
p, span, div, label, td, th, li, a, button, input, select, textarea { font-size: 14px !important; }
.btn, .form-control, .form-select, .form-label { font-size: 14px !important; }
.card-title, .modal-title { font-size: 16px !important; font-weight: 500; }
.alert, .dropdown-menu, .dropdown-item, .pagination, .page-link { font-size: 14px !important; }
.badge { font-size: 12px !important; }
.form-control-sm, .form-select-sm { font-size: 14px !important; }
.card-text { font-size: 14px !important; }

/* 顶部导航 - Element 风格（白色背景 + 阴影） */
.navbar {
  background: #fff !important;
  padding: 0;
  min-height: 50px;
  border: none;
  border-radius: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,.12);
  display: flex;
  align-items: stretch;
}
.navbar-with-sidebar .navbar-brand-wrap {
  width: 210px;
  min-width: 210px;
  display: flex;
  align-items: center;
  padding-left: 20px;
  border-right: 1px solid var(--el-border-lighter);
}
.navbar-with-sidebar .navbar-nav-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
.navbar-brand {
  font-size: 18px !important;
  color: var(--el-color-primary) !important;
  font-weight: 600;
}
.navbar .nav-link {
  color: var(--el-text-regular) !important;
  padding: 0 15px;
}
.navbar .nav-link:hover, .navbar .nav-link:focus {
  color: var(--el-color-primary) !important;
}
.navbar .dropdown-menu {
  background: #fff;
  border: 1px solid var(--el-border-lighter);
  border-radius: var(--el-border-radius);
  box-shadow: 0 2px 12px rgba(0,0,0,.1);
}
.navbar .dropdown-item:hover { background: var(--el-fill-base); }
.navbar .dropdown-item { color: var(--el-text-regular); }

/* 侧边栏 - 仿导航栏风格（白底、边框） */
.admin-sidebar {
  width: 210px;
  min-width: 210px;
  min-height: calc(100vh - 50px);
  background: #fff !important;
  border-right: 1px solid var(--el-border-lighter);
  box-shadow: 1px 0 2px rgba(0,0,0,.05);
  overflow: hidden;
}
.admin-sidebar .sidebar-group-toggle { justify-content: space-between; }
.admin-sidebar .sidebar-group-arrow { flex-shrink: 0; transition: transform .2s; }
.admin-sidebar .sidebar-group.expanded .sidebar-group-arrow { transform: rotate(-180deg); }
.admin-sidebar .sidebar-group-items {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease-out;
}
.admin-sidebar .sidebar-group-items.show { max-height: 500px; }
.admin-sidebar .sidebar-item { padding-left: 36px !important; font-size: 13px !important; }
.admin-sidebar .sidebar-group-icon,
.admin-sidebar .sidebar-item-icon { width: 1.1em; flex-shrink: 0; }
.admin-sidebar .nav-link {
  font-size: 14px !important;
  padding: 12px 20px;
  color: var(--el-text-regular);
  border-left: 3px solid transparent;
  white-space: nowrap;
  display: flex;
  align-items: center;
}
.admin-sidebar .nav-link:hover {
  color: var(--el-color-primary);
  background: var(--el-fill-base);
  border-left-color: var(--el-color-primary);
}
.admin-sidebar .nav-link.active {
  color: var(--el-color-primary);
  background: #ecf5ff;
  border-left-color: var(--el-color-primary);
}
.admin-sidebar .sidebar-text { transition: opacity .2s; }
.admin-sidebar .sidebar-first { display: none; }

/* 主内容区 - el-main */
main {
  background: var(--el-bg-page) !important;
  padding: 20px !important;
  min-height: calc(100vh - 50px);
}

/* 卡片 - el-card 风格 */
.card {
  border: none;
  border-radius: var(--el-border-radius);
  box-shadow: 0 1px 4px rgba(0,0,0,.12);
  background: #fff;
}
.card-header {
  font-size: 14px !important;
  font-weight: 500;
  background: #fff;
  border-bottom: 1px solid var(--el-border-lighter);
  padding: 16px 20px;
  color: var(--el-text-primary);
  border-radius: var(--el-border-radius) var(--el-border-radius) 0 0;
}
.card-body { padding: 20px; background: #fff; }

/* 表格 - el-table 风格 */
.table {
  font-size: 14px !important;
}
.table thead th {
  font-weight: 500;
  color: var(--el-text-secondary);
  background: var(--el-fill-base);
  border-bottom: 1px solid var(--el-border-lighter);
  padding: 12px 0;
  padding-left: 16px;
  padding-right: 16px;
}
.table tbody td {
  padding: 12px 16px;
  color: var(--el-text-regular);
  border-bottom: 1px solid var(--el-border-lighter);
}
.table-hover tbody tr:hover { background: var(--el-fill-base); }

/* 按钮 - el-button 风格 */
.btn {
  font-size: 14px !important;
  padding: 8px 15px;
  border-radius: var(--el-border-radius);
  font-weight: 500;
}
.btn-primary {
  background: var(--el-color-primary) !important;
  border-color: var(--el-color-primary) !important;
}
.btn-primary:hover {
  background: #66b1ff !important;
  border-color: #66b1ff !important;
}
.btn-outline-primary {
  color: var(--el-color-primary);
  border-color: #c6e2ff;
  background: #ecf5ff;
}
.btn-outline-primary:hover {
  background: var(--el-color-primary);
  color: #fff;
  border-color: var(--el-color-primary);
}
.btn-outline-secondary {
  color: var(--el-text-regular);
  border-color: var(--el-border-base);
  background: #fff;
}
.btn-outline-secondary:hover {
  color: var(--el-color-primary);
  border-color: #c6e2ff;
  background: #ecf5ff;
}
.btn-outline-danger {
  color: var(--el-color-danger);
  border-color: #fbc4c4;
  background: #fef0f0;
}
.btn-outline-danger:hover {
  background: var(--el-color-danger);
  color: #fff;
  border-color: var(--el-color-danger);
}
.btn-secondary {
  background: #fff !important;
  border-color: var(--el-border-base) !important;
  color: var(--el-text-regular) !important;
}
.btn-secondary:hover {
  color: var(--el-color-primary) !important;
  border-color: #c6e2ff !important;
  background: #ecf5ff !important;
}
.btn-sm {
  padding: 5px 12px;
  font-size: 13px !important;
}

/* 表单 - el-input 风格 */
.form-control, .form-select {
  font-size: 14px !important;
  border-radius: var(--el-border-radius);
  border: 1px solid var(--el-border-base);
  color: var(--el-text-regular);
}
.form-control:focus, .form-select:focus {
  border-color: var(--el-color-primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(64,158,255,.2);
}
.form-control::placeholder { color: var(--el-text-secondary); }
.form-label {
  font-size: 14px !important;
  color: var(--el-text-regular);
  margin-bottom: 8px;
}
.form-check-label { font-size: 14px !important; }

/* 弹窗 - el-dialog 风格 */
.modal-content {
  border: none;
  border-radius: var(--el-border-radius);
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--el-border-lighter);
  background: #fff;
}
.modal-title { font-size: 16px !important; font-weight: 500; color: var(--el-text-primary); }
.modal-body { padding: 20px; }
.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--el-border-lighter);
  background: #fff;
}

/* 提示框 - el-message/el-alert 风格 */
.alert {
  border: none;
  border-radius: var(--el-border-radius);
  padding: 12px 16px;
}
.alert-info {
  background: #ecf5ff;
  color: var(--el-color-primary);
}
.alert-success {
  background: #f0f9eb;
  color: var(--el-color-success);
}
.alert-danger {
  background: #fef0f0;
  color: var(--el-color-danger);
}

/* 分页 - el-pagination 风格 */
.pagination { gap: 5px; }
.page-link {
  border-radius: var(--el-border-radius) !important;
  padding: 6px 12px;
  border: 1px solid var(--el-border-base);
  color: var(--el-text-regular);
}
.page-link:hover {
  color: var(--el-color-primary);
  border-color: var(--el-color-primary);
  background: #ecf5ff;
}
.page-item.active .page-link {
  background: var(--el-color-primary) !important;
  border-color: var(--el-color-primary) !important;
}

/* 关联字段 autocomplete */
.relation-autocomplete { position: relative; }
.relation-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 200px;
  overflow-y: auto;
  z-index: 1050;
  display: none;
  margin-top: 2px;
  border: 1px solid var(--el-border-base);
  border-radius: var(--el-border-radius);
  box-shadow: 0 2px 12px rgba(0,0,0,.1);
  background: #fff;
}
.relation-dropdown .list-group-item { border-radius: 0; cursor: pointer; }
.relation-dropdown .list-group-item:hover { background: var(--el-fill-base); }

/* 数据列表 - 字段过多时在表格区域内显示横向滚动条，表头固定 */
.table-data-scroll {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  max-height: calc(100vh - 220px);
}
.table-data-scroll .table {
  min-width: max-content;
}
.table-data-scroll .table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--el-fill-base);
  box-shadow: 0 1px 0 var(--el-border-lighter);
  white-space: nowrap;
}
.table-data-scroll .table tbody td {
  white-space: nowrap;
}