/* =====================================================
   茶茶的小站 - Typecho 主题样式
   配色：奶茶米白 × 深棕 × 淡橙点缀
   ===================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --bg:          #faf8f5;
  --bg-card:     #ffffff;
  --bg-cover:    #f0ebe3;
  --text:        #3a2e28;
  --text-muted:  #8a7a6e;
  --text-light:  #b5a898;
  --accent:      #c8845a;
  --accent-soft: #f0ddd0;
  --border:      #e8e0d6;
  --shadow:      rgba(80, 50, 30, 0.08);
  --radius:      12px;
  --font-serif:  'Noto Serif SC', 'Source Han Serif SC', 'STSong', Georgia, serif;
  --font-sans:   -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width:   720px;
  --transition:  0.25s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:          #1e1a17;
    --bg-card:     #27211d;
    --bg-cover:    #2c2520;
    --text:        #e8ddd4;
    --text-muted:  #9e8e82;
    --text-light:  #6e5e54;
    --accent:      #d4956a;
    --accent-soft: #3a2a20;
    --border:      #3a3028;
    --shadow:      rgba(0, 0, 0, 0.25);
  }
}

/* ---------- 重置与基础 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}
a:hover { opacity: 0.75; }

img { max-width: 100%; height: auto; border-radius: 8px; display: block; }

/* ---------- 布局容器 ---------- */
.container {
  max-width: calc(var(--max-width) + 80px);
  margin: 0 auto;
  padding: 0 40px;
}

.site-main {
  flex: 1;
  padding: 48px 0 80px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-brand { display: flex; flex-direction: column; gap: 2px; }

.site-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.05em;
}
.site-title:hover { opacity: 1; color: var(--accent); }

.site-desc {
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-shrink: 0;
}

.site-nav a {
  font-size: 0.875rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent);
  transition: width var(--transition);
}
.site-nav a:hover { color: var(--accent); opacity: 1; }
.site-nav a:hover::after { width: 100%; }

/* ---------- 文章列表（首页） ---------- */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.post-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.post-card:hover {
  box-shadow: 0 8px 32px var(--shadow);
  transform: translateY(-2px);
}

.post-cover-link { display: block; }
.post-cover {
  height: 220px;
  background-size: cover;
  background-position: center;
  background-color: var(--bg-cover);
  transition: transform var(--transition);
}
.post-card:hover .post-cover { transform: scale(1.02); }

.post-body {
  padding: 28px 32px 32px;
}

.post-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  letter-spacing: 0.03em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.post-meta a { color: var(--text-light); }
.post-meta a:hover { color: var(--accent); opacity: 1; }

.post-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 12px;
}
.post-title a { color: var(--text); }
.post-title a:hover { color: var(--accent); opacity: 1; }

.post-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--accent-soft);
  padding-bottom: 1px;
  transition: border-color var(--transition);
}
.read-more:hover { opacity: 1; border-color: var(--accent); }

/* ---------- 分页 ---------- */
.pagination {
  max-width: var(--max-width);
  margin: 48px auto 0;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.pagination a, .pagination .current {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 8px;
  margin: 0 3px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}
.pagination a:hover, .pagination .current {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  opacity: 1;
}

/* ---------- 文章详情页 ---------- */
.single-post {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* 有封面图时的大图头部 */
.single-cover {
  border-radius: var(--radius);
  overflow: hidden;
  height: 380px;
  background-size: cover;
  background-position: center;
  position: relative;
  margin-bottom: 40px;
}
.single-cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 30%, rgba(20,12,8,0.7) 100%);
}
.single-cover-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 40px;
  color: #fff;
}
.single-cover-title h1 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.single-cover-title .single-meta { color: rgba(255,255,255,0.75); font-size: 0.82rem; }
.single-cover-title .single-meta a { color: rgba(255,255,255,0.75); }

/* 无封面图时的文字头部 */
.single-header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.single-header h1 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text);
}
.single-meta {
  font-size: 0.82rem;
  color: var(--text-light);
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.single-meta a { color: var(--text-light); }
.single-meta a:hover { color: var(--accent); opacity: 1; }

/* 正文排版 */
.content-body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text);
}

.content-body h1, .content-body h2, .content-body h3,
.content-body h4, .content-body h5, .content-body h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.4;
  margin: 2.2em 0 0.8em;
  color: var(--text);
}
.content-body h1 { font-size: 1.6rem; }
.content-body h2 { font-size: 1.35rem; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.content-body h3 { font-size: 1.15rem; }

.content-body p { margin: 0 0 1.4em; }

.content-body a { color: var(--accent); border-bottom: 1px solid var(--accent-soft); }
.content-body a:hover { opacity: 1; border-color: var(--accent); }

.content-body ul, .content-body ol {
  padding-left: 1.6em;
  margin: 0 0 1.4em;
}
.content-body li { margin-bottom: 0.4em; }

.content-body blockquote {
  margin: 1.6em 0;
  padding: 16px 24px;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  color: var(--text-muted);
  font-style: italic;
}
.content-body blockquote p:last-child { margin-bottom: 0; }

.content-body code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875em;
  background: var(--bg-cover);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
}

.content-body pre {
  background: #1e1a17;
  border-radius: 10px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 1.6em 0;
}
.content-body pre code {
  background: none;
  color: #e0d5c8;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.7;
}

.content-body img {
  max-width: 100%;
  border-radius: 10px;
  margin: 1.4em auto;
}

.content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 0.9rem;
}
.content-body th, .content-body td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  text-align: left;
}
.content-body th {
  background: var(--bg-cover);
  font-weight: 600;
}

.content-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.4em 0;
}

/* 文章页脚标签 */
.single-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-list a {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-cover);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 10px;
  transition: all var(--transition);
}
.tag-list a:hover {
  opacity: 1;
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.tag-label { color: var(--accent); }

/* ---------- 上下篇导航 ---------- */
.post-nav {
  max-width: var(--max-width);
  margin: 48px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.post-nav-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.post-nav-prev, .post-nav-next {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.post-nav-next { text-align: right; align-items: flex-end; }
.nav-label {
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 0.04em;
}
.post-nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.post-nav a:hover { color: var(--accent); opacity: 1; }
.nav-empty {
  font-size: 0.85rem;
  color: var(--text-light);
  font-style: italic;
}

/* ---------- 评论区 ---------- */
.comments-section {
  max-width: var(--max-width);
  margin: 56px auto 0;
}
.comments-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--text);
}

/* Typecho 默认评论列表美化 */
.comment-list { list-style: none; padding: 0; margin: 0 0 40px; }
.comment-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.comment-item:last-child { border-bottom: none; }
.comment-avatar img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  display: block;
}
.comment-content { flex: 1; min-width: 0; }
.comment-meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.comment-author {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}
.comment-author a { color: var(--text); text-decoration: none; }
.comment-author a:hover { color: var(--accent); }
.comment-date {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 400;
}
.comment-body { font-size: 0.9rem; color: var(--text-muted); line-height: 1.8; word-break: break-word; }
.comment-body code { background: var(--bg-cover); padding: 1px 5px; border-radius: 4px; font-size: 0.85em; }

/* 子评论缩进 */
.comment-item.is-reply {
  margin-left: 36px;
  padding-left: 16px;
  border-left: 2px solid var(--accent-soft);
  border-bottom: none;
}
.comment-reply-to {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 500;
}

/* 评论表单 */
.comment-form-wrap {
  margin-top: 40px;
}
.comment-form-wrap h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text);
}
.comment-form-fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}
@media (max-width: 600px) {
  .comment-form-fields { grid-template-columns: 1fr; }
}
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  box-sizing: border-box;
  -webkit-appearance: none;
}
.comment-form input:focus,
.comment-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.comment-form textarea {
  min-height: 120px;
  resize: vertical;
  display: block;
  width: 100%;
  margin-bottom: 14px;
}
.comment-submit {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 32px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.comment-submit:hover {
  background: color-mix(in srgb, var(--accent) 82%, #000);
  transform: translateY(-1px);
}
.comment-submit:active { transform: none; }

/* ---------- 底部 ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}
.footer-sig {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--text-light);
}
.footer-copy a { color: var(--text-light); }
.footer-copy a:hover { color: var(--accent); opacity: 1; }
.theme-name { color: var(--accent); }

/* ---------- 独立页面 ---------- */
.single-page .single-header {
  text-align: center;
}
.single-page .single-header h1 {
  font-size: 2rem;
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  html { font-size: 16px; }
  .container { padding: 0 20px; }
  .site-main { padding: 32px 0 60px; }
  .site-header .container { flex-direction: column; align-items: flex-start; gap: 12px; }
  .post-body { padding: 20px 20px 24px; }
  .post-cover { height: 180px; }
  .single-cover { height: 260px; }
  .single-cover-title { padding: 20px 20px; }
  .single-cover-title h1 { font-size: 1.4rem; }
  .single-header h1 { font-size: 1.45rem; }
  .post-nav-inner { grid-template-columns: 1fr; }
  .post-nav-next { text-align: left; align-items: flex-start; }
}

@media (max-width: 480px) {
  .site-nav { gap: 16px; }
  .post-list { gap: 20px; }
}