/* ======================
   SonguoAI Theme — 仿少数派
   ====================== */

/* --- 变量 --- */
:root {
  --bg: #ffffff;
  --bg-secondary: #f7f8fa;
  --text: #1f1f22;
  --text-secondary: #666;
  --text-muted: #999;
  --accent: #d94e5d;
  --accent-hover: #c0392b;
  --border: #e8e8e8;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.04);
  --card-hover-shadow: 0 6px 24px rgba(0,0,0,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --header-h: 60px;
  --max-width: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* --- 重置 --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg-secondary); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; }

/* --- 顶栏 --- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg); border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 20px;
  height: 100%; display: flex; align-items: center; gap: 24px;
}
.header-left { flex-shrink: 0; }
.site-logo { font-size: 1.3rem; font-weight: 700; color: var(--text); letter-spacing: -0.5px; }
.site-logo:hover { color: var(--accent); }

.header-nav { flex: 1; }
.header-nav ul { list-style: none; display: flex; gap: 24px; }
.header-nav a { color: var(--text-secondary); font-size: 0.9rem; transition: color 0.2s; }
.header-nav a:hover { color: var(--text); }

.header-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.btn-search, .btn-login, .btn-mobile-menu {
  background: none; border: none; font-size: 1rem; cursor: pointer; color: var(--text-secondary); padding: 6px 10px; border-radius: var(--radius-sm);
}
.btn-login { font-size: 0.85rem; border: 1px solid var(--border); padding: 6px 16px; }
.btn-search:hover, .btn-login:hover { color: var(--text); background: var(--bg-secondary); }
.btn-mobile-menu { display: none; }
.search-dropdown { display: none; position: absolute; top: 100%; right: 0; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; box-shadow: var(--card-hover-shadow); }
.search-dropdown input { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 12px; width: 200px; font-size: 0.9rem; }

/* --- 主布局 --- */
.site-container { min-height: calc(100vh - var(--header-h)); }
.site-main {
  max-width: var(--max-width); margin: 0 auto; padding: 24px 20px;
  display: grid; grid-template-columns: 1fr 300px; gap: 24px; align-items: start;
}

/* --- Hero Banner --- */
.hero-banner {
  display: grid; grid-template-columns: 2fr 1fr; gap: 12px;
  margin-bottom: 28px; min-height: 320px;
}
.hero-card { position: relative; border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.hero-card__cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-card__info { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7)); color: #fff; }
.hero-card__title { font-size: 1.3rem; font-weight: 600; line-height: 1.4; margin-bottom: 6px; }
.hero-card--main .hero-card__title { font-size: 1.5rem; }
.hero-card__desc { font-size: 0.85rem; opacity: 0.85; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.hero-card__meta { font-size: 0.75rem; opacity: 0.7; }
.hero-card__meta .meta-item + .meta-item { margin-left: 10px; }
.hero-card--side .hero-card__info { padding: 16px; }
.hero-card--side .hero-card__title { font-size: 1rem; }

/* --- 文章卡片 --- */
.article-feed { display: flex; flex-direction: column; gap: 16px; }
.article-card {
  background: var(--bg); border-radius: var(--radius);
  box-shadow: var(--card-shadow); overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}
.article-card:hover { box-shadow: var(--card-hover-shadow); transform: translateY(-2px); }
.article-card__link { display: flex; gap: 20px; color: inherit; }
.article-card__cover { flex-shrink: 0; width: 220px; height: 140px; overflow: hidden; }
.article-card__cover img { width: 100%; height: 100%; object-fit: cover; }
.article-card__body { flex: 1; padding: 16px 20px 16px 0; display: flex; flex-direction: column; justify-content: center; }
.article-card__title {
  font-size: 1.1rem; font-weight: 600; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 6px; color: var(--text);
}
.article-card__excerpt {
  font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 10px;
}
.article-card__meta { display: flex; gap: 14px; align-items: center; font-size: 0.78rem; color: var(--text-muted); }
.article-card__cat {
  background: var(--bg-secondary); color: var(--text-secondary);
  padding: 2px 8px; border-radius: 4px; font-size: 0.72rem;
}

/* --- 侧边栏 --- */
.sidebar-right { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 84px; }
.side-card { background: var(--bg); border-radius: var(--radius); box-shadow: var(--card-shadow); padding: 18px; }
.side-card__title { font-size: 0.95rem; font-weight: 600; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 2px solid var(--accent); }

.hot-posts { list-style: none; }
.hot-post-item { margin-bottom: 10px; }
.hot-post-link { display: flex; justify-content: space-between; align-items: center; color: var(--text); font-size: 0.85rem; }
.hot-post-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hot-post-views { flex-shrink: 0; font-size: 0.75rem; color: var(--text-muted); margin-left: 8px; }

.cat-list { list-style: none; }
.cat-list li { margin-bottom: 6px; font-size: 0.85rem; }
.cat-list a { color: var(--text-secondary); }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-cloud a { font-size: 0.8rem !important; padding: 4px 10px; background: var(--bg-secondary); border-radius: 4px; color: var(--text-secondary); }
.tag-cloud a:hover { background: var(--accent); color: #fff; }

/* --- 文章页 --- */
.single-post { background: var(--bg); border-radius: var(--radius); box-shadow: var(--card-shadow); overflow: hidden; }
.single-hero { max-height: 420px; overflow: hidden; }
.single-hero img { width: 100%; object-fit: cover; }
.single-header { padding: 28px 32px 0; }
.single-title { font-size: 1.8rem; font-weight: 700; line-height: 1.4; margin-bottom: 14px; }
.single-meta { display: flex; gap: 16px; align-items: center; font-size: 0.85rem; color: var(--text-muted); padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.single-cat { background: var(--accent); color: #fff; padding: 2px 10px; border-radius: 4px; font-size: 0.78rem; }
.single-content { padding: 32px; font-size: 1.05rem; line-height: 1.9; }
.single-content h2 { font-size: 1.4rem; margin: 28px 0 14px; }
.single-content h3 { font-size: 1.15rem; margin: 22px 0 10px; }
.single-content p { margin-bottom: 16px; }
.single-content img { border-radius: var(--radius-sm); margin: 16px 0; }
.single-content blockquote { border-left: 3px solid var(--accent); margin: 16px 0; padding: 10px 20px; background: var(--bg-secondary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-secondary); }
.single-content pre { background: #282c34; color: #abb2bf; padding: 18px; border-radius: var(--radius-sm); overflow-x: auto; font-size: 0.9rem; }
.single-content code { background: var(--bg-secondary); padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }
.single-content pre code { background: none; padding: 0; }
.single-footer { padding: 0 32px 24px; }
.single-tags { font-size: 0.85rem; }
.single-tags a { display: inline-block; padding: 3px 10px; background: var(--bg-secondary); border-radius: 4px; margin: 0 4px 4px 0; color: var(--text-secondary); font-size: 0.8rem; }
.single-tags a:hover { background: var(--accent); color: #fff; }
.tag-label { color: var(--text-muted); }

/* --- 分页 --- */
.pagination { margin-top: 24px; text-align: center; }
.pagination .nav-links { display: inline-flex; gap: 6px; }
.pagination .page-numbers {
  display: inline-block; padding: 8px 14px; border-radius: var(--radius-sm);
  background: var(--bg); border: 1px solid var(--border); color: var(--text-secondary); font-size: 0.9rem;
}
.pagination .current { background: var(--accent); color: #fff; border-color: var(--accent); }

/* --- 评论 --- */
.comments-area { padding: 0 32px 32px; }

/* --- 底部 --- */
.site-footer { background: var(--text); color: #ccc; padding: 40px 20px; margin-top: 40px; }
.footer-inner { max-width: var(--max-width); margin: 0 auto; display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; align-items: center; }
.footer-logo { font-size: 1.1rem; font-weight: 700; color: #fff; }
.footer-desc { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }
.footer-nav ul { list-style: none; display: flex; gap: 20px; }
.footer-nav a { color: #aaa; font-size: 0.85rem; }
.footer-nav a:hover { color: #fff; }
.footer-copy { font-size: 0.78rem; color: #666; }
.footer-copy a { color: #aaa; }

/* --- 空状态 --- */
.empty-state { text-align: center; padding: 80px 0; color: var(--text-muted); font-size: 1.1rem; }

/* --- 响应式 --- */
@media (max-width: 900px) {
  .site-main { grid-template-columns: 1fr; }
  .sidebar-right { display: none; }
  .hero-banner { grid-template-columns: 1fr; min-height: auto; }
  .hero-card--side { display: none; }
  .article-card__cover { width: 140px; height: 100px; }
  .single-hero { max-height: 250px; }
  .single-content { padding: 20px; font-size: 1rem; }
}

@media (max-width: 600px) {
  .header-nav { display: none; }
  .btn-mobile-menu { display: block; }
  .article-card__cover { width: 110px; height: 80px; }
  .article-card__title { font-size: 0.95rem; }
  .single-title { font-size: 1.3rem; }
  .footer-inner { flex-direction: column; text-align: center; }
}