/* ==============================
   hellowiki — ZhengXi Wiki
   Inspired by: highlight (伞间岁月)
   Font: Noto Serif SC (思源宋体)
   ============================== */

:root {
  --accent: #b74e4e;
  --accent-light: rgba(183, 78, 78, 0.08);
  --accent-glow: rgba(183, 78, 78, 0.15);
  --bg: #F1F7F4;
  --surface: #ffffff;
  --sidebar-bg: #ffffff;
  --text: #2c2c2c;
  --text-secondary: #888;
  --text-muted: #aaa;
  --border: #e2efe6;
  --border-light: rgba(0,0,0,0.06);

  --title-font: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --body-font: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --mono-font: "SF Mono", "Fira Code", "Cascadia Code", "JetBrains Mono", "Consolas", monospace;

  --header-height: 56px;
  --sidebar-width: 260px;
  --content-max: 720px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--body-font);
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(183, 78, 78, 0.02) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(45, 106, 79, 0.02) 0%, transparent 50%);
  background-attachment: fixed;
}

::selection {
  background: var(--accent-light);
  color: var(--text);
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.25s ease;
}
a:hover { color: var(--accent); }

/* ==============================
   Scrollbar
   ============================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d0dcd0; border-radius: 3px; }

/* ==============================
   Animations
   ============================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==============================
   Reading Progress Bar
   ============================== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2.5px;
  background: linear-gradient(90deg, var(--accent), #d47878);
  z-index: 1001;
  transition: width 0.1s linear;
  border-radius: 0 1px 1px 0;
}

/* ==============================
   Back to Top
   ============================== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(183, 78, 78, 0.12);
  transform: translateY(-2px);
}

/* ==============================
   Header
   ============================== */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: #fff;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo-marker {
  display: inline-block;
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.6;
}

.site-logo {
  font-family: var(--title-font);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}

.site-logo:hover { color: var(--accent); text-decoration: none; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  position: relative;
  transition: all 0.25s ease;
}

.site-nav a:hover {
  color: var(--accent);
  background: var(--accent-light);
  text-decoration: none;
}

/* ==============================
   Layout — Sidebar + Content
   ============================== */
#main {
  display: flex;
  max-width: 1280px;
  margin: var(--header-height) auto 0;
  min-height: calc(100vh - var(--header-height));
}

#sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--sidebar-bg);
  padding: 24px 20px;
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  overflow-y: auto;
  border-right: 1px solid var(--border);
}

#content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 40px 48px 60px;
  max-width: calc(var(--sidebar-width) + var(--content-max));
  animation: fadeInUp 0.5s ease both;
}

/* ==============================
   Sidebar Widgets
   ============================== */
.sidebar-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.widget-title {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1.5px solid var(--border);
  position: relative;
}
.widget-title::after {
  content: '';
  position: absolute;
  bottom: -1.5px; left: 0;
  width: 24px; height: 1.5px;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0.5;
}

/* Search */
.widget-search #search-input {
  width: 100%;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--body-font);
  font-size: 0.82rem;
  outline: none;
  background: var(--bg);
  transition: all 0.25s ease;
  color: var(--text);
}
.widget-search #search-input::placeholder { color: var(--text-muted); }
.widget-search #search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
  background: var(--surface);
}

/* Search Results Dropdown */
.search-result {
  display: none;
  position: fixed;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  z-index: 999;
  max-height: 380px;
  overflow-y: auto;
}

.search-result.active {
  display: block;
}

.search-result-item {
  display: block;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-light);
  text-decoration: none;
  transition: background 0.15s ease;
  cursor: pointer;
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover,
.search-result-item.selected {
  background: var(--accent-light);
  text-decoration: none;
}

.search-result-title {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 2px;
}

.search-result-title mark {
  background: #fef08a;
  color: var(--text);
  padding: 0.05em 0.15em;
  border-radius: 2px;
}

.search-result-item:hover .search-result-title,
.search-result-item.selected .search-result-title {
  color: var(--accent);
}

.search-result-meta {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.search-result-empty {
  padding: 16px 14px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Category & Archive lists */
.widget-categories ul,
.widget-archives ul { list-style: none; }

.widget-categories li,
.widget-archives li {
  padding: 4px 8px;
  margin: 0 -8px;
  border-radius: 5px;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  transition: background 0.2s ease;
}

.widget-categories li:hover,
.widget-archives li:hover {
  background: var(--accent-light);
}

.widget-categories li a,
.widget-archives li a {
  color: var(--text-secondary);
  display: block;
  transition: all 0.2s ease;
  padding: 2px 0;
  flex: 1;
}

.widget-categories li a:hover,
.widget-archives li a:hover {
  color: var(--accent);
  text-decoration: none;
}

.widget-categories .count {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 500;
  background: var(--border);
  padding: 0 7px;
  border-radius: 10px;
  line-height: 1.7;
  flex-shrink: 0;
}

/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.tag-cloud .tag-link {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--accent-light);
  padding: 2px 9px;
  border-radius: 20px;
  font-weight: 500;
  transition: all 0.2s ease;
}
.tag-cloud .tag-link:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}

/* Widget More Link */
.widget-more {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 500;
  transition: all 0.2s ease;
}
.widget-more:hover {
  text-decoration: underline;
}

/* TOC */
.widget-toc .toc { list-style: none; font-size: 0.82rem; }
.widget-toc .toc-child { list-style: none; padding-left: 12px; }
.widget-toc .toc-link {
  color: var(--text-muted);
  display: block;
  padding: 3px 0 3px 8px;
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
}
.widget-toc .toc-link:hover {
  color: var(--text-secondary);
  border-left-color: var(--border);
  text-decoration: none;
}
.widget-toc .toc-item.active > .toc-link {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ==============================
   Content — Home / Index
   ============================== */
.wiki-index {
  animation: fadeInUp 0.5s ease both;
}

.page-header { margin-bottom: 32px; }

.page-title {
  font-family: var(--title-font);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 6px;
  font-style: italic;
}

.wiki-description {
  margin-bottom: 32px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.7);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent);
  color: var(--text-secondary);
  font-size: 0.88rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

/* Quick Stats */
.wiki-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-bottom: 28px;
  padding: 10px 20px;
  background: rgba(255,255,255,0.45);
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.stat-item { white-space: nowrap; }

.stat-val {
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.stat-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.stat-dot {
  display: inline-block;
  width: 3px; height: 3px;
  background: var(--text-muted);
  border-radius: 50%;
  opacity: 0.35;
}

/* Section Headers */
section h2 {
  font-family: var(--title-font);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
section h2::before {
  content: '';
  display: inline-block;
  width: 4px; height: 14px;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0.5;
}

.section-more {
  margin-left: auto;
  font-size: 0.76rem;
  font-weight: 400;
  color: var(--accent);
  opacity: 0.55;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}
.section-more:hover {
  opacity: 1;
  color: var(--accent);
  text-decoration: none;
}

/* Category Grid */
.wiki-category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
  margin: 0 0 36px;
}

.wiki-category-card {
  position: relative;
  z-index: 0;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 12px;
  text-align: center;
  transition: all 0.25s ease;
  cursor: pointer;
}
.wiki-category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  z-index: -2;
}
.wiki-category-card:hover {
  border-color: rgba(0,0,0,0.1);
  box-shadow: 0 3px 12px rgba(0,0,0,0.04);
  transform: translateY(-3px);
}
.wiki-category-card:hover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.025);
  border-radius: inherit;
  z-index: -1;
}
.wiki-category-card a:hover { text-decoration: none; }
.wiki-category-card .category-name { position: relative; z-index: 1; }
.wiki-category-card .category-count { position: relative; z-index: 1; }

.category-name {
  display: block;
  font-family: var(--title-font);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 3px;
}
.category-count {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--border);
  padding: 0 8px;
  border-radius: 10px;
}

/* Post List (Home) */
.post-list { list-style: none; }

.post-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  gap: 10px;
  transition: all 0.25s ease;
  position: relative;
  padding-left: 0;
  border-radius: 0 4px 4px 0;
}
.post-item::before {
  content: '';
  position: absolute;
  left: 0; top: 10%;
  height: 80%; width: 2px;
  background: var(--accent);
  border-radius: 1px;
  opacity: 0;
  transform: scaleY(0);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.post-item:hover {
  padding-left: 12px;
  background: var(--accent-light);
}
.post-item:hover::before {
  opacity: 0.4;
  transform: scaleY(1);
}

.post-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  min-width: 72px;
  font-weight: 400;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.post-link {
  font-family: var(--title-font);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s ease;
}
.post-link:hover { color: var(--accent); }

.post-description {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 3px;
  line-height: 1.6;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 2rem 0 1rem;
}
.pagination a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.25s ease, transform 0.2s ease;
}
.pagination a:hover {
  color: var(--accent);
  transform: translateX(3px);
}

/* ==============================
   Post / Page Content
   ============================== */
.wiki-post {
  padding: 0.5rem 0 2rem;
  animation: fadeInUp 0.5s ease both;
}

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.post-title {
  font-family: var(--title-font);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 0.6rem;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.post-meta a { color: var(--text-secondary); }
.post-meta a:hover { color: var(--accent); }

.meta-sep {
  color: var(--text-muted);
  font-size: 0.72rem;
  opacity: 0.5;
}

/* Post Tags (bottom) */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}
.post-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-light);
  padding: 0.2em 0.7em;
  border-radius: 4px;
  transition: all 0.2s ease;
}
.post-tag:hover {
  background: var(--accent);
  color: #fff !important;
  text-decoration: none;
}

/* ==============================
   Wiki Content — Article Typography
   ============================== */
.wiki-content {
  font-size: 1rem;
  line-height: 1.9;
  word-wrap: break-word;
}

.wiki-content h1,
.wiki-content h2,
.wiki-content h3,
.wiki-content h4,
.wiki-content h5,
.wiki-content h6 {
  font-family: var(--title-font);
  font-weight: 600;
  line-height: 1.4;
  margin-top: 2.2em;
  margin-bottom: 0.8em;
  letter-spacing: -0.01em;
}
.wiki-content h1 { font-size: 1.5rem; }
.wiki-content h2 { font-size: 1.3rem; }
.wiki-content h3 { font-size: 1.1rem; }
.wiki-content h4 { font-size: 0.95rem; }

.wiki-content h2::before {
  content: '';
  display: inline-block;
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 0.5rem;
  vertical-align: middle;
  margin-bottom: 0.15em;
  opacity: 0.6;
}

.wiki-content p { margin-bottom: 1.3em; }

.wiki-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(183, 78, 78, 0.3);
  transition: text-decoration-color 0.2s ease;
}
.wiki-content a:hover { text-decoration-color: var(--accent); }

.wiki-content strong { font-weight: 700; }

/* Blockquote */
.wiki-content blockquote {
  margin: 1.8em 0;
  padding: 1em 1.35em;
  border-left: 3px solid var(--accent);
  background: linear-gradient(90deg, var(--accent-light) 0%, transparent 100%);
  color: var(--text-secondary);
  font-style: italic;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.wiki-content blockquote p:last-child { margin-bottom: 0; }

/* Inline Code */
.wiki-content code {
  font-family: var(--mono-font);
  font-size: 0.88em;
  background: rgba(45, 106, 79, 0.08);
  color: #2d6a4f;
  padding: 0.15em 0.45em;
  border-radius: 4px;
  font-weight: 500;
}

/* Code Blocks — hexo figure.highlight structure */
.wiki-content figure.highlight {
  position: relative;
  margin: 1.8em 0;
  padding: 0;
  background: #eaf5ef;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid #d1e7d8;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.wiki-content figure.highlight pre {
  margin: 0;
  padding: 1.25rem;
  padding-top: 2.6rem;
  background: transparent !important;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.65;
  border: none;
  box-shadow: none;
}

.wiki-content figure.highlight pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: #1a3a2a !important;
  font-size: inherit;
  line-height: inherit;
  font-weight: 400;
}

/* Reset table inside figure.highlight (hexo wraps code in <table>) */
.wiki-content figure.highlight table,
.wiki-content figure.highlight tbody,
.wiki-content figure.highlight tr,
.wiki-content figure.highlight td {
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  box-shadow: none;
  display: block;
  width: auto;
}

.wiki-content figure.highlight table {
  border-collapse: collapse;
}

.wiki-content figure.highlight td.code {
  width: 100%;
  min-width: 0;
  max-width: 100%;
}

/* Language label on figure */
.wiki-content figure.highlight::before {
  content: attr(data-lang);
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1.9rem;
  line-height: 1.9rem;
  padding: 0 14px;
  background: #d4ecd9;
  color: #2d6a4f;
  font-family: var(--body-font);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 1;
}

/* Copy button for code blocks */
.wiki-content figure.highlight .code-copy-btn {
  position: absolute;
  top: 0.35rem; right: 10px;
  z-index: 10;
  padding: 3px 10px;
  background: rgba(255,255,255,0.85);
  border: 1px solid #c1ddd0;
  border-radius: 4px;
  color: #2d6a4f;
  font-family: var(--body-font);
  font-size: 0.7rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s ease;
  line-height: 1.5;
}
.wiki-content pre > .code-copy-btn:hover {
  background: #fff;
  color: #1a5a3a;
  border-color: #a8d4bc;
}
.wiki-content pre > .code-copy-btn.copied {
  color: #16a34a;
  border-color: rgba(22,163,74,0.4);
  background: rgba(22,163,74,0.1);
}

/* Lists */
.wiki-content ul,
.wiki-content ol {
  margin: 1em 0;
  padding-left: 1.6em;
}
.wiki-content li { margin-bottom: 0.45em; }
.wiki-content li::marker { color: var(--accent); opacity: 0.6; }

/* Task list */
.wiki-content input[type="checkbox"] {
  accent-color: var(--accent);
  margin-right: 6px;
}

/* Images */
.wiki-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin: 1.5em auto;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: box-shadow 0.3s ease;
}
.wiki-content img:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }

/* Horizontal Rule */
.wiki-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.8em 0;
  position: relative;
}
.wiki-content hr::after {
  content: '·';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg);
  color: var(--text-muted);
  padding: 0 0.8rem;
  font-size: 1.2rem;
}

/* Tables */
.wiki-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}
.wiki-content th,
.wiki-content td {
  padding: 0.7em 1em;
  border: 1px solid var(--border);
  text-align: left;
}
.wiki-content th {
  background: rgba(45, 106, 79, 0.06);
  font-weight: 600;
  color: var(--text);
  font-size: 0.9em;
}
.wiki-content tr:hover td { background: rgba(0,0,0,0.012); }

/* Strikethrough */
.wiki-content del,
.wiki-content s {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Highlight / Mark */
.wiki-content mark {
  background: #fef08a;
  color: var(--text);
  padding: 0.1em 0.2em;
  border-radius: 2px;
}

/* Footnote */
.wiki-content .footnote-ref { font-size: 0.8em; vertical-align: super; }
.wiki-content .footnotes { margin-top: 2em; font-size: 0.85rem; color: var(--text-secondary); }

/* ==============================
   Post Navigation
   ============================== */
.post-nav {
  display: flex;
  margin-top: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255,255,255,0.7);
  transition: box-shadow 0.3s ease;
}
.post-nav:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.03); }

.post-nav-item {
  flex: 1;
  padding: 1rem 1.25rem;
  text-decoration: none;
  transition: background 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.post-nav-item:hover {
  background: var(--accent-light);
  text-decoration: none;
}
.post-nav-item + .post-nav-item { border-left: 1px solid var(--border); }
.post-nav-prev { align-items: flex-start; text-align: left; }
.post-nav-next { align-items: flex-end; text-align: right; }

.post-nav-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  transition: color 0.2s ease;
}
.post-nav-item:hover .post-nav-label { color: var(--accent); }

.post-nav-title {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.5;
  transition: color 0.25s ease;
}
.post-nav-item:hover .post-nav-title { color: var(--accent); }

/* Category count inline (on categories page) */
.category-count-inline {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 4px;
}

/* ==============================
   Post Share
   ============================== */
.post-share {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
}

.share-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-right: 0.25rem;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.share-btn:hover {
  transform: translateY(-2px);
}

.share-btn.share-twitter:hover {
  color: #1da1f2;
  border-color: rgba(29, 161, 242, 0.3);
  background: rgba(29, 161, 242, 0.06);
}

.share-btn.share-weibo:hover {
  color: #e6162d;
  border-color: rgba(230, 22, 45, 0.3);
  background: rgba(230, 22, 45, 0.06);
}

.share-btn.share-copy:hover {
  color: var(--accent);
  border-color: rgba(183, 78, 78, 0.3);
  background: var(--accent-light);
}

.share-btn.share-copy.copied {
  color: #16a34a;
  border-color: rgba(22, 163, 74, 0.35);
  background: rgba(22, 163, 74, 0.08);
}

.share-copy-icon {
  display: block;
}

.share-btn.share-copy.copied .share-copy-icon {
  display: none;
}

.share-copy-feedback {
  display: none;
  font-size: 0.72rem;
  font-weight: 500;
  color: #16a34a;
  white-space: nowrap;
}

.share-btn.share-copy.copied + .share-copy-feedback {
  display: inline;
}

/* ==============================
   Related Posts
   ============================== */
.related-posts {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.related-title {
  font-family: var(--title-font);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

.related-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.related-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.related-item:hover {
  border-color: rgba(183, 78, 78, 0.25);
  background: var(--accent-light);
  transform: translateY(-1px);
}

.related-item-title {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
  transition: color 0.2s ease;
}

.related-item:hover .related-item-title {
  color: var(--accent);
}

.related-item-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ==============================
   Comments
   ============================== */
.comments-section {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ==============================
   Category / Tag / Archive Pages
   ============================== */
.wiki-archive {
  padding: 1rem 0;
  animation: fadeInUp 0.5s ease both;
}

/* Tags Cloud */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1rem 0;
}
.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: rgba(0,0,0,0.03);
  padding: 0.35rem 0.9rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}
.tag-item:hover {
  background: var(--accent-light);
  color: var(--accent);
  transform: translateY(-1px);
  border-color: rgba(183,78,78,0.2);
  text-decoration: none;
}
.tag-count {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(0,0,0,0.04);
  padding: 0.05em 0.45em;
  border-radius: 10px;
  min-width: 1.2rem;
  text-align: center;
}
.tag-item:hover .tag-count {
  color: var(--accent);
  background: rgba(183,78,78,0.1);
}

/* ==============================
   Footer
   ============================== */
#footer {
  margin-left: var(--sidebar-width);
  padding: 20px 48px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}
#footer a { color: var(--text-secondary); font-weight: 500; }
#footer a:hover { color: var(--accent); }

/* ==============================
   Responsive
   ============================== */
@media (max-width: 1024px) {
  #sidebar { width: 220px; min-width: 220px; padding: 20px 16px; }
  #content { margin-left: 220px; padding: 32px 24px; }
  #footer { margin-left: 220px; padding: 20px 24px; }
}

@media (max-width: 768px) {
  #sidebar { display: none; }
  #content { margin-left: 0; padding: 20px 16px; min-width: 0; }
  #footer { margin-left: 0; padding: 16px 20px; }
  .header-inner { padding: 0 12px; }
  .site-nav { gap: 2px; }
  .site-nav a { padding: 5px 6px; }
  .post-title { font-size: 1.4rem; }
  .post-nav { flex-direction: column; }
  .post-nav-item + .post-nav-item { border-left: none; border-top: 1px solid var(--border); }
  .related-list { grid-template-columns: 1fr; }
}

/* Mobile code blocks & tables: allow horizontal scroll without breaking layout */
@media (max-width: 768px) {
  .wiki-content { overflow-x: auto; }
}

@media (max-width: 480px) {
  #content { padding: 16px 12px; }
  .wiki-category-grid { grid-template-columns: repeat(2, 1fr); }
  .post-item { flex-direction: column; gap: 4px; }
  .post-date { min-width: auto; }
  .post-nav { border-radius: var(--radius-sm); }
}

/* ==============================
   Page (custom page without sidebar)
   ============================== */
.wiki-page {
  padding: 1rem 0;
  animation: fadeInUp 0.5s ease both;
}