/* ============================================================
   Puchuan — section-news-list.css
   新闻列表：页头光晕 + 响应式卡片网格
   ============================================================ */

#block-news {
  position: relative;
  padding-bottom: 6rem;
}

/* 页头区 */
.news-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.news-hero-glow {
  pointer-events: none;
  position: absolute;
  inset: 0;
}

.news-hero-glow .glow-1 {
  position: absolute;
  right: -6rem;
  top: -6rem;
  width: 18rem;
  height: 18rem;
  border-radius: 999px;
  background: rgba(191, 219, 254, 0.5);
  filter: blur(64px);
}

.news-hero-glow .glow-2 {
  position: absolute;
  left: -5rem;
  top: 3rem;
  width: 16rem;
  height: 16rem;
  border-radius: 999px;
  background: rgba(186, 230, 253, 0.5);
  filter: blur(64px);
}

.news-hero-glow .glow-3 {
  position: absolute;
  bottom: 0;
  left: 33.333%;
  width: 18rem;
  height: 10rem;
  border-radius: 999px;
  background: rgba(219, 234, 254, 0.4);
  filter: blur(64px);
}

.news-hero-inner {
  position: relative;
  margin: 0 auto;
  max-width: 72rem;
  padding: 5rem 1.5rem 6rem;
}

.news-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--color-primary-200);
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  font-size: 0.875rem;
  font-weight: 600;
}

.news-hero-title {
  margin-top: 1.5rem;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
}

.news-hero-desc {
  margin-top: 1.25rem;
  max-width: 42rem;
  font-size: 1.125rem;
  line-height: 1.625;
  color: var(--color-text-secondary);
}

/* 列表区 */
.news-list-inner {
  margin: 0 auto;
  max-width: 72rem;
  padding: 3rem 1.5rem 0;
}

.news-list-head {
  margin-bottom: 2.5rem;
}

.news-list-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.news-list-count {
  margin-top: 0.5rem;
  color: var(--color-text-muted);
}

/* 选择文章系列：筛选栏 */
.news-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  background: var(--color-surface);
}

.news-filter-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.news-filter-label svg {
  color: var(--color-primary);
}

.news-select-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.news-series-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding: 0.5rem 2.5rem 0.5rem 1rem;
  min-width: 12rem;
  max-width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-background-subtle);
  color: var(--color-text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.25rem;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.news-series-select:hover {
  border-color: var(--color-primary-300);
}

.news-series-select:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.news-select-chevron {
  position: absolute;
  right: 0.875rem;
  display: inline-flex;
  pointer-events: none;
  color: var(--color-text-muted);
}

/* 网格项（卡片外壳，承载 data-series / hidden 过滤状态） */
.news-grid-item {
  display: flex;
  min-width: 0;
}

.news-grid-item[hidden],
.news-filter-empty[hidden] {
  display: none;
}

/* 筛选空态 */
.news-filter-empty {
  margin-top: 1.5rem;
  text-align: center;
  padding: 3rem 1.5rem;
  border-radius: 1rem;
  border: 1px dashed var(--color-border-muted);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* 响应式网格 */
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* 卡片基座 */
.news-card.section-card {
  margin-bottom: 0;
  padding: 1.75rem 1.75rem 1.5rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-color: var(--color-card-border);
  transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}

.news-card.section-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-text-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-card.section-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-border-hover);
}

.news-card.section-card:hover::before {
  transform: scaleX(1);
}

.news-card-link {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.news-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.news-category {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-primary-tint-10);
  color: var(--color-primary-700);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}

.news-date {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  flex: none;
}

/* 文章系列行（列表渲染系列归属） */
.news-series {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  margin: 0;
  font-size: 0.75rem;
  color: var(--color-text-muted-light);
}

.news-series svg {
  color: var(--color-primary-300);
  flex: none;
}

.news-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-text-primary);
  transition: color 0.2s;
}

.news-card-link:hover .news-title {
  color: var(--color-primary-700);
}

.news-summary {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.news-more {
  margin-top: auto;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 空态提示 */
.news-empty {
  text-align: center;
  padding: 4rem 1.5rem;
  border-radius: 1.5rem;
  border: 1px dashed var(--color-border-muted);
  background: var(--color-surface);
}

@media (min-width: 640px) {
  .news-hero-inner {
    padding-top: 6rem;
  }

  .news-hero-title {
    font-size: 3rem;
  }
}

@media (min-width: 768px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .news-list-title {
    font-size: 1.875rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .news-card.section-card,
  .news-card.section-card::before {
    transition: none;
  }

  .news-card.section-card:hover {
    transform: none;
  }

  .news-title {
    transition: none;
  }
}