/* ============================================
   components.css - 可复用组件样式
   卡片 / 按钮 / 表单 / 分页 / 标签 / 弹窗
   ============================================ */

/* ============================================
   通用卡片 (.card)
   ============================================ */
.card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.card__image {
  width: 100%;
  overflow: hidden;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card__image img {
  transform: scale(1.05);
}

.card__body {
  padding: var(--space-5);
}

.card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  transition: color var(--transition-base);
}

.card:hover .card__title {
  color: var(--primary-blue);
}

.card__desc {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--border-color-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ============================================
   医生卡片 (.doctor-card)
   ============================================ */
.doctor-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-8) var(--space-5) var(--space-6);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.doctor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.doctor-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.doctor-card__photo {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-full);
  margin: 0 auto var(--space-4);
  overflow: hidden;
  border: 4px solid var(--white);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1;
  background: var(--gray-200);
}

.doctor-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.doctor-card:hover .doctor-card__photo img {
  transform: scale(1.08);
}

.doctor-card__name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.doctor-card__title {
  font-size: var(--font-size-sm);
  color: var(--primary-blue);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-2);
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 119, 182, 0.08);
  border-radius: var(--radius-pill);
}

.doctor-card__dept {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.doctor-card__specialty {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.doctor-card__actions {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-2);
  justify-content: center;
}

/* ============================================
   设备卡片 (.equipment-card)
   ============================================ */
.equipment-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.equipment-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.equipment-card__image {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
  background: var(--gray-100);
}

.equipment-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.equipment-card:hover .equipment-card__image img {
  transform: scale(1.05);
}

.equipment-card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-primary);
  color: var(--white);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-pill);
}

.equipment-card__body {
  padding: var(--space-5);
}

.equipment-card__name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  transition: color var(--transition-base);
}

.equipment-card:hover .equipment-card__name {
  color: var(--primary-blue);
}

.equipment-card__dept {
  font-size: var(--font-size-sm);
  color: var(--primary-cyan);
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-medium);
}

.equipment-card__brief {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   科室卡片 (.department-card)
   ============================================ */
.department-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-8) var(--space-5);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.department-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.department-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(0, 119, 182, 0.1);
}

.department-card:hover::after {
  transform: scaleX(1);
}

.department-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 119, 182, 0.08), rgba(0, 204, 153, 0.08));
  transition: background var(--transition-base), transform var(--transition-base);
}

.department-card__icon i,
.department-card__icon img {
  font-size: 28px;
  color: var(--primary-blue);
  width: 32px;
  height: 32px;
  transition: color var(--transition-base);
}

.department-card:hover .department-card__icon {
  background: var(--gradient-primary);
  transform: scale(1.1);
}

.department-card:hover .department-card__icon i {
  color: var(--white);
}

.department-card__name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.department-card__brief {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   新闻卡片 (.news-card)
   ============================================ */
.news-card {
  display: flex;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.news-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

.news-card__thumbnail {
  width: 240px;
  min-width: 240px;
  height: 160px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--gray-100);
}

.news-card__thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.news-card:hover .news-card__thumbnail img {
  transform: scale(1.05);
}

.news-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  min-width: 0;
}

.news-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.news-card__category {
  font-size: var(--font-size-xs);
  color: var(--primary-blue);
  font-weight: var(--font-weight-medium);
  padding: var(--space-1) var(--space-2);
  background: rgba(0, 119, 182, 0.08);
  border-radius: var(--radius-sm);
}

.news-card__date {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.news-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  transition: color var(--transition-base);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card:hover .news-card__title {
  color: var(--primary-blue);
}

.news-card__excerpt {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 垂直布局的新闻卡片 */
.news-card--vertical {
  flex-direction: column;
}

.news-card--vertical .news-card__thumbnail {
  width: 100%;
  min-width: auto;
  height: 180px;
}

/* 紧凑型新闻列表项 */
.news-item {
  display: flex;
  align-items: flex-start;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-color-light);
  transition: background-color var(--transition-base);
}

.news-item:last-child {
  border-bottom: none;
}

.news-item:hover {
  background-color: var(--gray-50);
}

.news-item__date-box {
  width: 56px;
  min-width: 56px;
  text-align: center;
  margin-right: var(--space-4);
  padding: var(--space-2);
  background: var(--gray-100);
  border-radius: var(--radius-sm);
}

.news-item__date-box .day {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-blue);
  line-height: 1.1;
}

.news-item__date-box .month {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.news-item__content {
  flex: 1;
  min-width: 0;
}

.news-item__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
  transition: color var(--transition-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-item:hover .news-item__title {
  color: var(--primary-blue);
}

.news-item__excerpt {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   按钮 (.btn)
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 24px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

/* 主要按钮 - 渐变 */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  border-color: transparent;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  background: var(--gradient-dark);
  box-shadow: var(--shadow-primary-lg);
  transform: translateY(-1px);
  color: var(--white);
}

/* 线框按钮 */
.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-1px);
}

/* 白色线框 */
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn-outline-white:hover {
  background: var(--white);
  color: var(--primary-blue);
  transform: translateY(-1px);
}

/* 预约按钮 - 红色/醒目 */
.btn-appointment {
  background: var(--color-appointment);
  color: var(--white);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
}

.btn-appointment:hover {
  background: var(--color-appointment-hover);
  box-shadow: 0 6px 16px rgba(230, 57, 70, 0.35);
  transform: translateY(-1px);
  color: var(--white);
}

/* 次要按钮 */
.btn-secondary {
  background: var(--gray-200);
  color: var(--text-primary);
  border-color: transparent;
}

.btn-secondary:hover {
  background: var(--gray-300);
  transform: translateY(-1px);
}

/* 文本按钮 */
.btn-text {
  background: transparent;
  color: var(--primary-blue);
  border-color: transparent;
  padding: 10px 12px;
}

.btn-text:hover {
  color: var(--primary-blue-dark);
  background: rgba(0, 119, 182, 0.06);
}

/* 图标按钮 */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* 按钮尺寸 */
.btn-sm {
  padding: 6px 16px;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 36px;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn-xl {
  padding: 16px 48px;
  font-size: var(--font-size-xl);
  border-radius: var(--radius-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* 按钮禁用态 */
.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* 按钮加载态 */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--white);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

/* ============================================
   表单 (.form-group)
   ============================================ */
.form-group {
  margin-bottom: var(--space-5);
}

.form-group label,
.form-label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-label .required {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-control {
  display: block;
  width: 100%;
  padding: 10px 14px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--text-primary);
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  line-height: 1.5;
}

.form-control:hover {
  border-color: var(--border-color-dark);
}

.form-control:focus {
  outline: none;
  border-color: var(--border-color-focus);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.12);
}

.form-control::placeholder {
  color: var(--text-muted);
}

/* 文本域 */
textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

/* 下拉选择 */
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

/* 表单尺寸变体 */
.form-control-sm {
  padding: 6px 10px;
  font-size: var(--font-size-sm);
}

.form-control-lg {
  padding: 14px 18px;
  font-size: var(--font-size-lg);
}

/* 错误态 */
.form-group.has-error .form-control {
  border-color: var(--color-danger);
}

.form-group.has-error .form-control:focus {
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.12);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-danger);
  margin-top: var(--space-1);
}

/* 成功态 */
.form-group.has-success .form-control {
  border-color: var(--color-success);
}

/* 帮助文本 */
.form-hint {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* Checkbox / Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-blue);
  cursor: pointer;
}

.form-check label {
  margin-bottom: 0;
  font-weight: var(--font-weight-normal);
  cursor: pointer;
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-box:focus-within {
  border-color: var(--border-color-focus);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.12);
}

.search-box input {
  flex: 1;
  border: none;
  padding: 10px 16px;
  background: transparent;
  font-size: var(--font-size-base);
}

.search-box input:focus {
  outline: none;
}

.search-box button {
  padding: 10px 20px;
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  transition: opacity var(--transition-base);
}

.search-box button:hover {
  opacity: 0.9;
}

/* ============================================
   分页 (.pagination)
   ============================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-10);
}

.pagination__item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.pagination__item:hover {
  color: var(--primary-blue);
  border-color: var(--primary-blue);
  background: rgba(0, 119, 182, 0.05);
}

.pagination__item.active {
  background: var(--gradient-primary);
  color: var(--white);
  border-color: transparent;
  font-weight: var(--font-weight-medium);
  cursor: default;
}

.pagination__item.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.pagination__ellipsis {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-muted);
  font-size: var(--font-size-base);
}

.pagination__info {
  margin-left: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ============================================
   标签 (.tag)
   ============================================ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
  background: var(--bg-white);
  color: var(--text-secondary);
  white-space: nowrap;
}

.tag:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background: rgba(0, 119, 182, 0.05);
}

.tag.active,
.tag--active {
  background: var(--gradient-primary);
  color: var(--white);
  border-color: transparent;
}

.tag--blue {
  background: rgba(0, 119, 182, 0.08);
  color: var(--primary-blue);
  border-color: rgba(0, 119, 182, 0.2);
}

.tag--cyan {
  background: rgba(0, 180, 216, 0.08);
  color: var(--primary-cyan-dark);
  border-color: rgba(0, 180, 216, 0.2);
}

.tag--green {
  background: rgba(0, 204, 153, 0.08);
  color: var(--primary-green-dark);
  border-color: rgba(0, 204, 153, 0.2);
}

.tag--red {
  background: rgba(220, 53, 69, 0.08);
  color: var(--color-danger);
  border-color: rgba(220, 53, 69, 0.2);
}

.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================
   弹窗 (.modal)
   ============================================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-mask);
  z-index: var(--z-modal-backdrop);
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  width: 90%;
  max-width: 560px;
  max-height: 85vh;
  overflow: hidden;
  z-index: var(--z-modal);
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-color-light);
}

.modal__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: 0;
}

.modal__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-base);
  font-size: var(--font-size-xl);
  color: var(--text-muted);
  background: none;
  border: none;
}

.modal__close:hover {
  background-color: var(--gray-100);
  color: var(--text-primary);
}

.modal__body {
  padding: var(--space-6);
  overflow-y: auto;
  max-height: 60vh;
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-color-light);
}

/* ============================================
   加载状态 (.loading)
   ============================================ */
.loading-spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary-blue);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  border-radius: inherit;
}

/* ============================================
   工具提示 (.tooltip)
   ============================================ */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-3);
  background: var(--gray-800);
  color: var(--white);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-tooltip);
  pointer-events: none;
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   徽章 (.badge)
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-pill);
  line-height: 1.5;
}

.badge--primary {
  background: rgba(0, 119, 182, 0.1);
  color: var(--primary-blue);
}

.badge--success {
  background: rgba(40, 167, 69, 0.1);
  color: var(--color-success);
}

.badge--danger {
  background: rgba(220, 53, 69, 0.1);
  color: var(--color-danger);
}

.badge--dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border-radius: var(--radius-full);
  background: var(--color-online);
}

/* ============================================
   空状态 (.empty-state)
   ============================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-8);
  text-align: center;
}

.empty-state__icon {
  font-size: 64px;
  color: var(--gray-300);
  margin-bottom: var(--space-5);
}

.empty-state__title {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.empty-state__desc {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}