/* ============================================================
   blog.css — 博客列表样式（最小化版本，与现有 lidazhi-blog 容器兼容）
   注：实际 /blog 由 Docker 容器服务，本 CSS 仅作为静态站点的预备样式
   依赖：tokens.css + global.css
   ============================================================ */

/* 列表 hero */
.blog-hero .page-hero {
  background: var(--black-pure);
}
.blog-hero h1 {
  color: var(--white-pure);
}

/* 过滤器 */
.blog-filters {
  padding: var(--space-md) 0;
  background: var(--white-ivory);
  border-bottom: 1px solid var(--gold-tint-25);
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}
.filter-label {
  font-size: 14px;
  color: var(--gray-700);
  align-self: center;
}
.filter-btn {
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  border: 1px solid var(--gray-300);
  background: var(--white-pure);
  color: var(--black-text);
  transition: all var(--transition-fast);
  min-height: 36px;
}
.filter-btn:hover,
.filter-btn:focus-visible {
  border-color: var(--gold-primary);
  color: var(--gold-deep);
}
.filter-btn.active {
  background: var(--black-pure);
  color: var(--gold-primary);
  border-color: var(--black-pure);
}

/* 博客网格 */
.blog-section {
  padding: var(--space-2xl) 0 var(--space-3xl);
  background: var(--white-warm);
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}
.article-card {
  background: var(--white-pure);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  overflow: hidden;
  display: block;
  box-shadow: var(--shadow-1);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.article-card:hover,
.article-card:focus-visible {
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-3);
}
.card-cover {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--black-pure) 0%, var(--black-soft) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.card-cover-text {
  font-size: 14px;
  color: var(--gold-primary);
  text-align: center;
  padding: 0 var(--space-md);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-base);
}
.card-body {
  padding: var(--space-md);
}
.card-tag {
  background: var(--gold-tint-12);
  color: var(--gold-deep);
  font-size: 12px;
  font-weight: var(--fw-semibold);
  padding: 2px 10px;
  border-radius: var(--radius);
  display: inline-block;
  margin-bottom: var(--space-sm);
}
.card-date {
  font-size: 13px;
  color: var(--gray-700);
  margin-left: var(--space-sm);
}
.card-title {
  font-size: 18px;
  font-weight: var(--fw-bold);
  color: var(--black-pure);
  margin-bottom: var(--space-sm);
  line-height: var(--lh-snug);
}
.card-excerpt {
  font-size: 14px;
  color: var(--gray-700);
  line-height: var(--lh-relax);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-md);
}
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}
.card-read {
  color: var(--gold-deep);
  font-weight: var(--fw-semibold);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.card-read-time {
  color: var(--gray-700);
}
.article-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
}
.article-card.featured .card-cover {
  aspect-ratio: auto;
  height: 100%;
  min-height: 240px;
}

/* hero 统计区 */
.hero-stats-blog {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-top: var(--space-md);
}
.hs-num {
  font-size: 28px;
  font-weight: var(--fw-heavy);
  color: var(--gold-primary);
}
.hs-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .article-card.featured {
    grid-template-columns: 1fr;
  }
  .article-card.featured .card-cover {
    aspect-ratio: 16 / 9;
    min-height: 0;
  }
}

/* ============================================================
   blog.css 增强（与新设计语言对齐）
   ============================================================ */

/* 过滤按钮区 */
.blog-filters {
  padding: 24px 0;
  background: var(--white-ivory);
  border-bottom: 1px solid var(--gold-tint-25);
}
.blog-filters .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.blog-filters .filter-label {
  font-size: 13px;
  font-weight: var(--fw-semibold);
  color: var(--gold-deep);
  letter-spacing: 2px;
  padding-right: 12px;
  border-right: 1px solid var(--gold-tint-40);
}
.blog-filters .filter-btns {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-btn {
  background: transparent;
  border: 1px solid var(--gold-tint-40);
  color: var(--gray-700);
  padding: 8px 18px;
  font-size: 13px;
  letter-spacing: 1.5px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
}
.filter-btn:hover {
  border-color: var(--gold-primary);
  color: var(--black-pure);
}
.filter-btn.active {
  background: var(--black-pure);
  border-color: var(--black-pure);
  color: var(--gold-primary);
  font-weight: var(--fw-semibold);
}

/* 文章列表 section */
.blog-section {
  padding: 56px 0 80px;
}
.blog-section .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* 网格：自适应 3 列 */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 文章卡 */
.article-card {
  background: var(--white-pure);
  border: 1px solid var(--gold-tint-25);
  border-radius: 2px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.article-card:hover {
  border-color: var(--gold-primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(197, 162, 77, 0.12);
}
/* 封面（无图时用古金渐变 + 文字） */
.article-card .card-cover {
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(ellipse 80% 50% at 50% 50%, rgba(197, 162, 77, 0.18), transparent 70%),
    linear-gradient(135deg, var(--black-pure), var(--black-soft));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.article-card .card-cover::before {
  content: '';
  position: absolute;
  top: 12px; left: 12px; right: 12px; bottom: 12px;
  border: 1px solid var(--gold-tint-40);
  pointer-events: none;
}
.article-card .card-cover-text {
  font-family: 'Source Han Serif SC', 'Noto Serif CJK SC', 'STSong', 'SimSun', serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--gold-primary);
  text-align: center;
  padding: 0 28px;
  line-height: 1.6;
  letter-spacing: 2px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 卡片正文 */
.article-card .card-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.article-card .card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
}
.article-card .card-tag {
  background: var(--gold-tint-12);
  color: var(--gold-deep);
  padding: 3px 10px;
  border-radius: 2px;
  font-weight: var(--fw-semibold);
  letter-spacing: 1px;
}
.article-card .card-date {
  color: var(--gray-700);
  letter-spacing: 1px;
}
.article-card .card-title {
  font-family: 'Source Han Serif SC', 'STSong', serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--black-pure);
  line-height: 1.5;
  letter-spacing: 1px;
  margin: 0;
  /* 标题最多 2 行 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-excerpt {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.75;
  margin: 0;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  margin-top: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--gold-tint-25);
}
.article-card .card-read {
  color: var(--gold-deep);
  font-weight: var(--fw-semibold);
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.article-card .card-read [data-lucide] {
  width: 14px; height: 14px;
}
.article-card .card-read-time {
  color: var(--gray-700);
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.article-card .card-read-time [data-lucide] {
  width: 12px; height: 12px;
}
.article-card:hover .card-read [data-lucide] {
  transform: translateX(3px);
  transition: transform 0.25s ease;
}

/* featured 卡：跨满 2 列，2 栏布局（封面左 + 内容右） */
.article-card.featured {
  grid-column: 1 / 3;
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 0;
}
.article-card.featured .card-cover {
  aspect-ratio: auto;
  height: 100%;
  min-height: 280px;
}
.article-card.featured .card-cover-text {
  font-size: 20px;
  -webkit-line-clamp: 4;
  line-clamp: 4;
}
.article-card.featured .card-body {
  padding: 32px 32px 28px;
  gap: 14px;
}
.article-card.featured .card-title {
  font-size: 22px;
  -webkit-line-clamp: 3;
  line-clamp: 3;
}
.article-card.featured .card-excerpt {
  font-size: 14px;
  -webkit-line-clamp: 4;
  line-clamp: 4;
}

/* 加载/空状态 */
.blog-loading,
.blog-error {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-700);
  font-size: 14px;
  letter-spacing: 1px;
}
.blog-error { color: #A23B3B; }
.blog-empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--gray-700);
}
.blog-empty [data-lucide] {
  width: 48px; height: 48px;
  color: var(--gold-tint-40);
  margin: 0 auto 16px;
}
.blog-empty p {
  font-size: 15px;
  letter-spacing: 1.5px;
}

/* 响应式 */
@media (max-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .article-card.featured { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; gap: 16px; }
  .article-card.featured { grid-template-columns: 1fr; }
  .article-card.featured .card-cover {
    aspect-ratio: 16 / 9;
    min-height: 0;
  }
  .blog-filters .container { padding: 0 var(--space-md); gap: 12px; }
  .blog-filters .filter-label {
    border-right: 0; padding-right: 0;
    width: 100%; margin-bottom: 4px;
  }
}