/* ============================================================
   tabs.css - 标签页组件
   栏目切换、Tabs 切换
   ============================================================ */

.tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: var(--spacing-lg);
}

.tabs__item {
  position: relative;
  padding: 12px 24px;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.tabs__item:hover {
  color: var(--color-primary);
}

.tabs__item.is-active {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.tabs__item.is-active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px 2px 0 0;
}

/* 下划线在卡片头的tabs */
.tabs--card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.tabs--card__left {
  display: flex;
  gap: 20px;
}

.tabs--card__item {
  position: relative;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  cursor: pointer;
  padding-bottom: 8px;
  transition: all var(--transition-base);
  font-family: var(--font-serif);
}

.tabs--card__item:hover {
  color: var(--color-text-primary);
}

.tabs--card__item.is-active {
  color: var(--color-text-primary);
}

.tabs--card__item.is-active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.tabs--card__more {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  cursor: pointer;
  transition: color var(--transition-base);
}

.tabs--card__more:hover {
  color: var(--color-primary);
}

/* 侧边栏子菜单 */
.side-menu {
  background-color: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.side-menu__title {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  color: #fff;
  padding: 24px 20px;
}

.side-menu__title-main {
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: 4px;
}

.side-menu__title-en {
  font-size: var(--font-size-xs);
  opacity: 0.7;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.side-menu__list {
  padding: 8px 0;
}

.side-menu__item {
  display: block;
  padding: 14px 20px;
  font-size: var(--font-size-base);
  color: var(--color-text-regular);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  position: relative;
  cursor: pointer;
}

.side-menu__item:last-child {
  border-bottom: none;
}

.side-menu__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background-color: var(--color-primary);
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.side-menu__item:hover,
.side-menu__item.is-active {
  color: var(--color-primary);
  background-color: var(--color-primary-bg);
  padding-left: 24px;
}

.side-menu__item:hover::before,
.side-menu__item.is-active::before {
  transform: scaleY(1);
}

.side-menu__item.is-active {
  font-weight: var(--font-weight-semibold);
}