/* /style/news-detail.css */
@import "./global.css";

/* ============================================================
   容器 / 面包屑
   ============================================================ */
.news-detail {
  padding: 60px 0 100px;
  background: #fff;
}

.news-detail .container {
  max-width: 960px;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-light);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.breadcrumb .material-icons {
  font-size: 14px;
  color: var(--text-light);
}

.breadcrumb > span:last-child {
  color: var(--text-primary);
  font-weight: 600;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============================================================
   Loading / Empty
   ============================================================ */
.news-loading,
.news-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 80px 20px;
  color: var(--text-secondary);
  font-size: 14px;
}

.news-loading[hidden],
.news-empty[hidden] {
  display: none;
}

.spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid var(--line);
  border-top-color: var(--primary);
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.news-empty .material-icons {
  font-size: 44px;
  color: var(--text-light);
}

.news-empty .btn {
  margin-top: 8px;
}

/* ============================================================
   文章头部
   ============================================================ */
.article-header {
  margin-bottom: 32px;
}

.article-header h1 {
  font-size: clamp(1.75rem, 3.4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--text-primary);
  margin-bottom: 22px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta .material-icons {
  font-size: 16px;
  color: var(--primary);
}

.article-meta .category {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

.article-meta .category .material-icons {
  font-size: 14px;
}

/* ============================================================
   封面图
   ============================================================ */
.article-image {
  margin-bottom: 44px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--bg-soft);
  aspect-ratio: 16 / 9;
}

.article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.article-image:hover img {
  transform: scale(1.02);
}

/* ============================================================
   正文
   ============================================================ */
.article-content {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 36px 0 16px;
  padding-left: 16px;
  position: relative;
  letter-spacing: -0.01em;
}

.article-content h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.article-content ul {
  margin: 0 0 22px;
  padding-left: 4px;
}

.article-content li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
  line-height: 1.75;
}

.article-content li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.article-content strong {
  color: var(--text-primary);
  font-weight: 700;
}

/* ============================================================
   标签
   ============================================================ */
.article-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--bg-light);
  border: 1px solid var(--line);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition);
}

.tag:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

/* ============================================================
   上下篇导航
   ============================================================ */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 56px;
}

.prev-article,
.next-article {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 26px;
  border-radius: var(--radius-lg);
  background: var(--bg-light);
  border: 1px solid var(--line);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.prev-article::before,
.next-article::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transition: width var(--transition);
}

.prev-article::before {
  left: 0;
}

.next-article::before {
  right: 0;
}

.prev-article:hover,
.next-article:hover {
  background: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.prev-article:hover::before,
.next-article:hover::before {
  width: 6px;
}

.article-nav .nav-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-light);
  font-weight: 600;
}

.article-nav .nav-label .material-icons {
  font-size: 14px;
  color: var(--primary);
}

.article-nav .nav-title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  transition: color var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.prev-article:hover .nav-title,
.next-article:hover .nav-title {
  color: var(--primary);
}

.next-article {
  text-align: right;
}

.next-article .nav-label {
  justify-content: flex-end;
}

/* ============================================================
   相关新闻
   ============================================================ */
.related-news {
  padding-top: 44px;
  border-top: 1px solid var(--line);
}

.related-news h3 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 26px;
  position: relative;
  padding-left: 18px;
}

.related-news h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 5px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.related-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-item {
  display: flex;
  gap: 18px;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--bg-light);
  border: 1px solid var(--line);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
}

.related-item:hover {
  background: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.related-item img {
  width: 110px;
  height: 82px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background: var(--bg-soft);
}

.related-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.related-content h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.45;
  transition: color var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-item:hover .related-content h4 {
  color: var(--primary);
}

.related-content p {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-content .date {
  font-size: 12px;
  color: var(--text-light);
  margin-top: auto;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
  .news-detail {
    padding: 40px 0 72px;
  }

  .article-image {
    margin-bottom: 32px;
    border-radius: var(--radius);
  }

  .article-content {
    font-size: 15px;
    line-height: 1.8;
  }

  .article-content h3 {
    font-size: 17px;
    margin: 28px 0 12px;
  }

  .article-nav {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 40px;
  }

  .next-article {
    text-align: left;
  }

  .next-article .nav-label {
    justify-content: flex-start;
  }

  .related-list {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .related-item img {
    width: 96px;
    height: 72px;
  }

  .related-news h3 {
    font-size: 19px;
  }

  .article-meta {
    gap: 14px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .article-header h1 {
    font-size: 22px;
  }

  .related-item {
    padding: 12px;
    gap: 12px;
  }

  .related-item img {
    width: 80px;
    height: 64px;
  }

  .related-content h4 {
    font-size: 14px;
  }
}