/* ===== 文章中心页面专属样式 · 限定 .page-news 作用域 ===== */

/* --- 变量定义 --- */
.page-news {
  --page-gap: 2rem;
  --card-radius: 0px;
  --filter-h: 48px;
  --hero-min-h: 240px;
  --breadcrumb-gap: 0.5rem;
  --card-shadow: 0 1px 3px rgba(11, 29, 42, 0.06);
  --card-shadow-hover: 0 4px 16px rgba(11, 29, 42, 0.10);
  --card-transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --filter-transition: 0.2s ease;
}

/* --- 基础重置与容器 --- */
.page-news *,
.page-news *::before,
.page-news *::after {
  box-sizing: border-box;
}

.page-news {
  display: block;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 1rem 3rem;
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
  color: var(--color-dark, #0B1D2A);
  background-color: var(--color-cream, #F1FAEE);
}

/* --- 辅助类 --- */
.page-news .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== 面包屑 ===== */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--breadcrumb-gap);
  padding: 0.75rem 0;
  font-size: var(--size-sm, 14px);
  color: var(--color-blue, #1D3557);
  border-bottom: 1px solid var(--color-grid, #A8DADC);
  margin-bottom: 1.5rem;
}

.page-news .breadcrumb a {
  color: var(--color-blue, #1D3557);
  text-decoration: none;
  transition: color var(--filter-transition);
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--color-red, #E63946);
  text-decoration: underline;
}

.page-news .breadcrumb-sep {
  color: var(--color-grid, #A8DADC);
  font-weight: var(--weight-data, 700);
}

.page-news .breadcrumb [aria-current="page"] {
  font-weight: var(--weight-data, 700);
  color: var(--color-dark, #0B1D2A);
}

/* ===== 顶部视觉区 ===== */
.page-news .hero-area {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2.5rem;
  min-height: var(--hero-min-h);
}

.page-news .hero-content {
  flex: 1;
}

.page-news .hero-content h1 {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: var(--weight-heading, 900);
  font-size: clamp(var(--size-xl, 32px), 5vw, var(--size-3xl, 64px));
  color: var(--color-blue, #1D3557);
  margin: 0 0 0.5rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-news .hero-tagline {
  font-size: var(--size-base, 16px);
  line-height: 1.6;
  color: var(--color-dark, #0B1D2A);
  max-width: 48em;
  margin: 0;
}

.page-news .hero-visual {
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--color-grid, #A8DADC);
  background-color: var(--color-blue, #1D3557);
}

.page-news .hero-bg-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.85;
}

/* ===== 文章区域布局 ===== */
.page-news .articles-section {
  position: relative;
  margin-bottom: 3rem;
}

/* --- 隐藏的 radio --- */
.page-news .filter-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- 分类标签栏 --- */
.page-news .filter-bar {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  padding: 0.5rem 0 1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-grid, #A8DADC) transparent;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-grid, #A8DADC);
}

.page-news .filter-bar::-webkit-scrollbar {
  height: 4px;
}

.page-news .filter-bar::-webkit-scrollbar-thumb {
  background-color: var(--color-grid, #A8DADC);
  border-radius: 2px;
}

.page-news .filter-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  font-size: var(--size-sm, 14px);
  font-weight: var(--weight-data, 700);
  color: var(--color-blue, #1D3557);
  background-color: transparent;
  border: 1px solid var(--color-grid, #A8DADC);
  cursor: pointer;
  transition: all var(--filter-transition);
  white-space: nowrap;
  user-select: none;
  font-family: var(--font-body, 'Inter', sans-serif);
  line-height: 1.2;
}

.page-news .filter-label:hover {
  border-color: var(--color-red, #E63946);
  color: var(--color-red, #E63946);
}

.page-news .filter-label:focus-visible {
  outline: 2px solid var(--color-gold, #F4A261);
  outline-offset: 2px;
}

.page-news .filter-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}

/* radio 选中态 — 全部 */
.page-news #filter-all:checked ~ .filter-bar .filter-label[for="filter-all"] {
  background-color: var(--color-red, #E63946);
  color: var(--color-light, #F1FAEE);
  border-color: var(--color-red, #E63946);
}

/* radio 选中态 — 篮球 */
.page-news #filter-basketball:checked ~ .filter-bar .filter-label[for="filter-basketball"] {
  background-color: var(--color-red, #E63946);
  color: var(--color-light, #F1FAEE);
  border-color: var(--color-red, #E63946);
}

/* radio 选中态 — 足球 */
.page-news #filter-football:checked ~ .filter-bar .filter-label[for="filter-football"] {
  background-color: var(--color-red, #E63946);
  color: var(--color-light, #F1FAEE);
  border-color: var(--color-red, #E63946);
}

/* radio 选中态 — 综合 */
.page-news #filter-comprehensive:checked ~ .filter-bar .filter-label[for="filter-comprehensive"] {
  background-color: var(--color-red, #E63946);
  color: var(--color-light, #F1FAEE);
  border-color: var(--color-red, #E63946);
}

/* 选中时图标反白（简单滤镜） */
.page-news .filter-radio:checked ~ .filter-bar .filter-label[for]:has(+ .filter-radio) .filter-icon {
  filter: brightness(0) invert(1);
}
/* 更精确的选中态图标处理 */
.page-news #filter-all:checked ~ .filter-bar .filter-label[for="filter-all"] .filter-icon,
.page-news #filter-basketball:checked ~ .filter-bar .filter-label[for="filter-basketball"] .filter-icon,
.page-news #filter-football:checked ~ .filter-bar .filter-label[for="filter-football"] .filter-icon,
.page-news #filter-comprehensive:checked ~ .filter-bar .filter-label[for="filter-comprehensive"] .filter-icon {
  filter: brightness(0) invert(1);
}

/* ===== 文章卡片网格 ===== */
.page-news .article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* --- 卡片基础 --- */
.page-news .article-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-light, #F1FAEE);
  border: 1px solid var(--color-grid, #A8DADC);
  transition: transform var(--card-transition), box-shadow var(--card-transition), border-color var(--card-transition);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}

.page-news .article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--color-gold, #F4A261);
}

.page-news .article-card:focus-within {
  border-color: var(--color-gold, #F4A261);
  box-shadow: var(--card-shadow-hover);
}

/* --- 卡片图片 --- */
.page-news .card-img-wrap {
  width: 100%;
  overflow: hidden;
  background-color: var(--color-blue, #1D3557);
  aspect-ratio: 3 / 2;
}

.page-news .card-img-wrap img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--card-transition);
}

.page-news .article-card:hover .card-img-wrap img {
  transform: scale(1.03);
}

/* --- 卡片正文 --- */
.page-news .card-body {
  padding: 1rem 1.2rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex: 1;
}

.page-news .card-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 0.15rem 0.6rem;
  font-size: var(--size-xs, 12px);
  font-weight: var(--weight-data, 700);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: 1px solid currentColor;
  line-height: 1.4;
}

.page-news .tag-comprehensive {
  color: var(--color-blue, #1D3557);
  border-color: var(--color-blue, #1D3557);
}

.page-news .tag-basketball {
  color: var(--color-red, #E63946);
  border-color: var(--color-red, #E63946);
}

.page-news .tag-football {
  color: var(--color-gold, #F4A261);
  border-color: var(--color-gold, #F4A261);
}

.page-news .card-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: var(--weight-heading, 900);
  font-size: var(--size-md, 20px);
  line-height: 1.25;
  color: var(--color-dark, #0B1D2A);
  margin: 0;
}

.page-news .card-summary {
  font-size: var(--size-sm, 14px);
  line-height: 1.6;
  color: var(--color-dark, #0B1D2A);
  margin: 0.2rem 0 0;
  opacity: 0.85;
}

.page-news .card-meta {
  margin-top: auto;
  padding-top: 0.6rem;
  font-size: var(--size-xs, 12px);
  color: var(--color-blue, #1D3557);
  border-top: 1px solid var(--color-grid, #A8DADC);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--weight-body, 400);
}

.page-news .reading-time {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--size-xs, 12px);
  color: var(--color-blue, #1D3557);
  opacity: 0.8;
}

/* ===== 筛选逻辑：显示/隐藏卡片 ===== */

/* 默认全部显示 */
.page-news .article-card {
  display: flex;
}

/* 筛选：只显示匹配分类的卡片 */
.page-news #filter-all:checked ~ .article-grid .article-card {
  display: flex;
}

.page-news #filter-basketball:checked ~ .article-grid .article-card[data-category="basketball"] {
  display: flex;
}

.page-news #filter-basketball:checked ~ .article-grid .article-card:not([data-category="basketball"]) {
  display: none;
}

.page-news #filter-football:checked ~ .article-grid .article-card[data-category="football"] {
  display: flex;
}

.page-news #filter-football:checked ~ .article-grid .article-card:not([data-category="football"]) {
  display: none;
}

.page-news #filter-comprehensive:checked ~ .article-grid .article-card[data-category="comprehensive"] {
  display: flex;
}

.page-news #filter-comprehensive:checked ~ .article-grid .article-card:not([data-category="comprehensive"]) {
  display: none;
}

/* 卡片出现时的淡入动画（仅当从隐藏变为显示时触发） */
@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-news .filter-radio:checked ~ .article-grid .article-card {
  animation: cardFadeIn 0.35s ease forwards;
}

/* 避免全部显示时重复动画（只对筛选结果应用） */
.page-news #filter-all:checked ~ .article-grid .article-card {
  animation: none;
}

/* 为每个筛选结果卡添加不同的延迟，产生错落感 */
.page-news #filter-basketball:checked ~ .article-grid .article-card[data-category="basketball"]:nth-child(1) { animation-delay: 0.02s; }
.page-news #filter-basketball:checked ~ .article-grid .article-card[data-category="basketball"]:nth-child(2) { animation-delay: 0.06s; }

.page-news #filter-football:checked ~ .article-grid .article-card[data-category="football"]:nth-child(1) { animation-delay: 0.02s; }

.page-news #filter-comprehensive:checked ~ .article-grid .article-card[data-category="comprehensive"]:nth-child(1) { animation-delay: 0.02s; }
.page-news #filter-comprehensive:checked ~ .article-grid .article-card[data-category="comprehensive"]:nth-child(2) { animation-delay: 0.06s; }
.page-news #filter-comprehensive:checked ~ .article-grid .article-card[data-category="comprehensive"]:nth-child(3) { animation-delay: 0.10s; }

/* ===== 加载更多按钮 ===== */
.page-news .load-more-wrap {
  text-align: center;
  padding: 1.5rem 0 0.5rem;
}

.page-news .load-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 2.2rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-weight: var(--weight-data, 700);
  font-size: var(--size-base, 16px);
  background-color: var(--color-blue, #1D3557);
  color: var(--color-light, #F1FAEE);
  border: 1px solid var(--color-blue, #1D3557);
  cursor: pointer;
  transition: all var(--filter-transition);
  line-height: 1.4;
}

.page-news .load-more-btn:hover {
  background-color: var(--color-red, #E63946);
  border-color: var(--color-red, #E63946);
  transform: translateY(-1px);
}

.page-news .load-more-btn:focus-visible {
  outline: 2px solid var(--color-gold, #F4A261);
  outline-offset: 3px;
}

/* ===== 相关链接区域 ===== */
.page-news .related-links {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--color-grid, #A8DADC);
}

.page-news .related-heading {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: var(--weight-heading, 900);
  font-size: var(--size-lg, 24px);
  color: var(--color-blue, #1D3557);
  margin: 0 0 1.2rem;
}

.page-news .related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-news .related-card {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--color-grid, #A8DADC);
  background-color: var(--color-light, #F1FAEE);
  text-decoration: none;
  color: var(--color-dark, #0B1D2A);
  transition: all var(--filter-transition);
}

.page-news .related-card:hover {
  border-color: var(--color-gold, #F4A261);
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
}

.page-news .related-card:focus-visible {
  outline: 2px solid var(--color-gold, #F4A261);
  outline-offset: 2px;
}

.page-news .related-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.page-news .related-text {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: var(--weight-heading, 900);
  font-size: var(--size-md, 20px);
  color: var(--color-blue, #1D3557);
}

.page-news .related-desc {
  font-size: var(--size-sm, 14px);
  color: var(--color-dark, #0B1D2A);
  opacity: 0.75;
}

/* ===== 桌面端布局 (min-width: 768px) ===== */
@media (min-width: 768px) {

  .page-news {
    padding: 0 2rem 4rem;
  }

  /* 顶部视觉区：并排 */
  .page-news .hero-area {
    flex-direction: row;
    align-items: flex-end;
    gap: 2rem;
    margin-bottom: 3rem;
  }

  .page-news .hero-content {
    flex: 1 1 55%;
  }

  .page-news .hero-visual {
    flex: 0 1 40%;
    max-width: 400px;
  }

  /* 分类标签 + 文章网格 并排布局 */
  .page-news .articles-section {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }

  /* 标签栏：垂直排列在左侧 */
  .page-news .filter-bar {
    flex-direction: column;
    flex: 0 0 160px;
    gap: 0.5rem;
    overflow-x: visible;
    border-bottom: none;
    padding: 0;
    margin-bottom: 0;
    position: sticky;
    top: calc(var(--header-h, 56px) + 1rem);
  }

  .page-news .filter-label {
    width: 100%;
    padding: 0.6rem 1rem;
    font-size: var(--size-base, 16px);
  }

  .page-news .filter-icon {
    width: 24px;
    height: 24px;
  }

  /* 文章网格区域 */
  .page-news .article-grid {
    flex: 1;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
  }

  /* 相关链接网格：三列 */
  .page-news .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== 大桌面端 (min-width: 1024px) ===== */
@media (min-width: 1024px) {

  .page-news {
    padding: 0 2.5rem 5rem;
  }

  .page-news .filter-bar {
    flex: 0 0 180px;
  }

  .page-news .article-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .page-news .hero-visual {
    flex: 0 1 35%;
    max-width: 480px;
  }
}

/* ===== 确保卡片内长文本不溢出 ===== */
.page-news .card-title,
.page-news .card-summary,
.page-news .card-meta {
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* ===== 打印优化 ===== */
@media print {
  .page-news .load-more-wrap,
  .page-news .filter-bar {
    display: none;
  }
  .page-news .article-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news .article-card {
    break-inside: avoid;
    border: 1px solid #ccc;
    box-shadow: none;
  }
}