/* =========================================================
   Default 1.0.0 — blog.css（P2-⑧ 拆分，由 theme.css/theme.js 抽出）
   仅本页面加载；核心共享样式仍由 layouts/theme.liquid head 加载 theme.css/theme.js
   ========================================================= */

/* ===== B-1 博客列表 tag 筛选 + 首篇置顶 ===== */
.blog-tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}
.blog-tag-chip {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}
.blog-tag-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.blog-tag-chip.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.blog-card-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: 40px;
  background: var(--color-bg-alt);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
}
.blog-card-featured:hover {
  box-shadow: var(--shadow-md);
}
.blog-card-featured .blog-image {
  aspect-ratio: 16/10;
  min-height: 280px;
  margin-bottom: 0;
}
.blog-card-featured .blog-card-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.blog-featured-badge {
  display: inline-block;
  width: fit-content;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.blog-card-featured .blog-title {
  font-size: 28px;
  margin-bottom: 12px;
}
.blog-card-featured .blog-excerpt {
  font-size: 15px;
  color: var(--color-text-muted);
}
@media (max-width: 768px) {
  .blog-card-featured {
    grid-template-columns: 1fr;
  }
  .blog-card-featured .blog-image {
    min-height: 200px;
  }
  .blog-card-featured .blog-card-body {
    padding: 24px;
  }
  .blog-card-featured .blog-title {
    font-size: 22px;
  }
}

/* ===== BlogPage.astro ===== */
  /* ===== 博客文章内容 §BLOG ===== */
  .article-page {
    padding: 48px 0;
    max-width: 800px;
    margin: 0 auto;
  }
  .article-hero {
    text-align: center;
    margin-bottom: 40px;
  }
  .article-meta {
    font-size: 13px;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }
  .article-meta-divider {
    color: var(--color-text-muted);
  }
  .article-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
  }
  .article-author {
    font-size: 14px;
    color: var(--color-text-muted);
  }
  .article-image {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--color-bg-alt);
    overflow: hidden;
    border-radius: 4px;
    margin-bottom: 40px;
  }
  .article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
  }
  .article-content h2 {
    font-size: 24px;
    font-weight: 600;
    margin: 32px 0 16px;
  }
  .article-content p {
    margin-bottom: 16px;
  }
  .article-content strong {
    font-weight: 600;
  }

  /* ===== B-2 作者简介模块 ===== */
  .author-card {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-top: 48px;
    padding: 24px;
    background: var(--color-bg-alt);
    border-radius: 8px;
    border: 1px solid var(--color-border);
  }
  .author-avatar {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
  }
  .author-info {
    flex: 1;
  }
  .author-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
  }
  .author-bio {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin: 0;
  }

  /* ===== 标签 ===== */
  .article-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
  }
  .article-tag {
    font-size: 13px;
    color: var(--color-accent);
    background: var(--color-bg-alt);
    padding: 4px 12px;
    border-radius: 12px;
    letter-spacing: 0.2px;
  }

  /* ===== 分享按钮 ===== */
  .article-share {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
  }
  .article-share-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-muted);
  }
  .article-share-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }
  .share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
  }
  .share-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
  }
  .share-btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }
  .share-btn svg {
    flex-shrink: 0;
  }

  /* ===== 上下篇导航 ===== */
  .article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
  }
  .article-nav-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 20px;
    background: var(--color-bg-alt);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-text);
    transition: var(--transition);
    min-height: 80px;
  }
  .article-nav-item:hover {
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
  }
  .article-nav-placeholder {
    background: transparent;
    pointer-events: none;
  }
  .article-nav-prev {
    text-align: left;
  }
  .article-nav-next {
    text-align: right;
    align-items: flex-end;
  }
  .article-nav-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
  }
  .article-nav-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
  }

  /* ===== 相关文章 ===== */
  .article-related {
    margin-top: 64px;
  }
  .article-related-title {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
  }

  /* ===== 响应式 ===== */
  @media (max-width: 768px) {
    .article-title {
      font-size: 28px;
    }
    .article-nav {
      grid-template-columns: 1fr;
    }
    .article-nav-next {
      text-align: left;
      align-items: flex-start;
    }
    .article-share {
      flex-direction: column;
      align-items: flex-start;
    }
  }