/* ========================================
   STM32 辅助开发集成平台 - 博客模块样式
   ======================================== */

/* --- 博客入口横幅 --- */
.blog-hero {
  background: linear-gradient(135deg, #009688 0%, #00796B 100%);
  color: #fff;
  border-radius: 8px;
  padding: 36px 32px;
  margin-bottom: 24px;
}
.blog-hero h1 {
  margin: 0 0 8px;
  font-size: 26px;
  border-bottom: none;
  padding: 0;
  color: #fff;
}
.blog-hero p {
  margin: 0;
  font-size: 14.5px;
  opacity: 0.9;
}

/* --- 文章列表工具条 --- */
.blog-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.blog-toolbar__label {
  font-size: 14px;
  color: var(--text-secondary);
}
.blog-toolbar__input {
  flex: 1;
  min-width: 200px;
  height: 34px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s;
}
.blog-toolbar__input:focus { border-color: var(--primary); }

/* --- 文章卡片 --- */
.blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin: 16px 0;
}
.blog-card {
  display: flex;
  flex-direction: column;
  padding: 20px 22px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: #fff;
  text-decoration: none !important;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
}
.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--primary);
}
.blog-card__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.45;
}
.blog-card__excerpt {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card__meta {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

/* --- 标签 chips --- */
.tag-chip {
  display: inline-block;
  padding: 1px 10px;
  background: var(--primary-light);
  color: var(--primary-dark) !important;
  border-radius: 12px;
  font-size: 12px;
  text-decoration: none !important;
  transition: background 0.15s;
}
.tag-chip:hover { background: #B2DFDB; }
.tag-chip--active { background: var(--primary); color: #fff !important; }

/* --- 标签筛选区 --- */
.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  padding: 12px 14px;
  background: var(--sidebar-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}
.tag-filter__all {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 12px;
  font-size: 12.5px;
  color: var(--text-secondary);
  text-decoration: none !important;
  border: 1px solid var(--border-color);
  background: #fff;
}
.tag-filter__all:hover { border-color: var(--primary); color: var(--primary); }
.tag-filter__all--active { background: var(--primary); color: #fff !important; border-color: var(--primary); }

/* --- 文章详情页 --- */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}
.article-meta .tag-chip { font-size: 11.5px; }

/* 文章正文容器（Markdown 渲染结果） */
.markdown-body {
  line-height: 1.85;
  font-size: 15.5px;
  color: var(--text-primary);
}
.markdown-body h2 { font-size: 22px; margin-top: 34px; padding-bottom: 8px; border-bottom: 1px solid var(--primary-light); }
.markdown-body h3 { font-size: 18px; margin-top: 26px; }
.markdown-body h4 { font-size: 16px; margin-top: 20px; }
.markdown-body p { margin: 12px 0; }
.markdown-body ul, .markdown-body ol { margin: 12px 0; }
.markdown-body blockquote {
  margin: 16px 0;
  padding: 10px 16px;
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  color: #00695C;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.markdown-body blockquote p { margin: 4px 0; }
.markdown-body img { border-radius: 6px; box-shadow: var(--shadow-sm); }
.markdown-body hr { border: none; border-top: 1px solid var(--border-color); margin: 28px 0; }
.markdown-body table { font-size: 14px; }
.markdown-body .code-block { font-size: 14px; }
.markdown-body h2[id], .markdown-body h3[id] { scroll-margin-top: 72px; }

/* --- 目录（TOC）--- */
.article-layout {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}
.article-main { flex: 1; min-width: 0; }
.article-toc {
  width: 230px;
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-height) + 20px);
  max-height: calc(100vh - var(--header-height) - 40px);
  overflow-y: auto;
  border-left: 1px solid var(--border-color);
  padding: 4px 0 4px 16px;
  font-size: 13px;
}
.article-toc__title {
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.article-toc ul { list-style: none; padding: 0; margin: 0; }
.article-toc li { margin: 5px 0; line-height: 1.5; }
.article-toc a {
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  padding: 2px 6px;
  border-radius: 3px;
  transition: color 0.15s, background 0.15s;
}
.article-toc a:hover { color: var(--primary); background: var(--primary-light); }
.article-toc .toc-h3 { padding-left: 16px; font-size: 12.5px; }

/* --- 文章底部分隔与导航 --- */
.article-footer-nav {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--border-color);
}
.article-tags-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* --- 标签聚合页 --- */
.tag-group { margin: 24px 0; }
.tag-group__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--primary-light);
}
.tag-group__item {
  display: block;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-color);
  color: var(--text-primary);
  text-decoration: none !important;
  font-size: 14.5px;
  transition: padding-left 0.15s, color 0.15s;
}
.tag-group__item:hover { padding-left: 8px; color: var(--primary); }
.tag-group__item small {
  color: var(--text-muted);
  margin-left: 10px;
  font-size: 12px;
}

/* --- 关于页 --- */
.about-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px 28px;
  margin: 16px 0;
  box-shadow: var(--shadow-sm);
}
.about-card h2 {
  font-size: 19px;
  margin-top: 0;
  margin-bottom: 10px;
  color: var(--primary);
  border-bottom: none;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.about-stat {
  text-align: center;
  padding: 16px 10px;
  background: var(--sidebar-bg);
  border-radius: 8px;
}
.about-stat b { display: block; font-size: 24px; color: var(--primary); }
.about-stat span { font-size: 13px; color: var(--text-secondary); }

/* --- 响应式 --- */
@media (max-width: 900px) {
  .article-toc { display: none; }
}
@media (max-width: 768px) {
  .blog-list { grid-template-columns: 1fr; }
  .blog-hero { padding: 24px 20px; }
  .blog-hero h1 { font-size: 22px; }
}