/* Utterlog Theme Styles */
[data-theme="Utterlog"] .utterlog-brand {
  transform-origin: center;
  transition: transform 0.216s ease;
  will-change: transform;
}
[data-theme="Utterlog"] .utterlog-brand:hover {
  transform: scale(1.1);
}

[data-theme="Utterlog"] .blog-prose {
  color: var(--color-text-main);
  font-size: 1.0625rem;
  line-height: 1.9;
  word-break: break-word;
}

/* Headings — no links, clean typography */
[data-theme="Utterlog"] .blog-prose h1, [data-theme="Utterlog"] .blog-prose h2, [data-theme="Utterlog"] .blog-prose h3, [data-theme="Utterlog"] .blog-prose h4 {
  font-family: var(--font-serif);
  color: var(--color-text-main);
  letter-spacing: -0.01em;
}
[data-theme="Utterlog"] .blog-prose h1 { font-size: 1.875rem; font-weight: 700; margin-top: 3rem; margin-bottom: 1.5rem; }

/* H2 — left color bar + bottom border */
[data-theme="Utterlog"] .blog-prose h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding: 0.5rem 0 0.75rem 0.75rem;
  border-left: 3px solid var(--color-primary);
  border-bottom: none;
  position: relative;
}
[data-theme="Utterlog"] .blog-prose h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-border);
}

/* H3 — square dot before text */
[data-theme="Utterlog"] .blog-prose h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
[data-theme="Utterlog"] .blog-prose h3::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 1px;
  flex-shrink: 0;
}

[data-theme="Utterlog"] .blog-prose h4 { font-size: 1.0625rem; font-weight: 600; margin-top: 1.5rem; margin-bottom: 0.5rem; color: var(--color-text-sub); }
/* Strip heading links from rehype-autolink */
[data-theme="Utterlog"] .blog-prose h1 a, [data-theme="Utterlog"] .blog-prose h2 a, [data-theme="Utterlog"] .blog-prose h3 a, [data-theme="Utterlog"] .blog-prose h4 a {
  color: inherit;
  text-decoration: none;
  pointer-events: none;
}

[data-theme="Utterlog"] .blog-prose p { margin-bottom: 1.5rem; }

/* Links — external icon + mshots preview on hover */
[data-theme="Utterlog"] .blog-prose a:not(h1 a):not(h2 a):not(h3 a):not(h4 a) {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.15s, text-decoration-color 0.15s;
  position: relative;
}
[data-theme="Utterlog"] .blog-prose a:not(h1 a):not(h2 a):not(h3 a):not(h4 a):hover { color: var(--color-primary-active); }

/* External link icon */
[data-theme="Utterlog"] .blog-link-icon {
  display: inline-block;
  vertical-align: middle;
  margin-left: 2px;
  opacity: 0.5;
  transition: opacity 0.15s;
}
[data-theme="Utterlog"] .blog-external-link:hover .blog-link-icon { opacity: 1; }

/* Mshots preview bubble tooltip */
[data-theme="Utterlog"] .blog-external-link { position: relative; }
[data-theme="Utterlog"] .blog-link-preview {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: 300px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15), 0 2px 8px rgba(0, 0, 0, 0.06);
  pointer-events: none;
  animation: preview-in 0.15s ease-out;
}
[data-theme="Utterlog"] .blog-link-preview img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
  border-radius: 4px 4px 0 0;
  min-height: 180px;
  background: #1a1a2e;
}
/* Arrow pointing down */
[data-theme="Utterlog"] .blog-link-preview-arrow {
  position: absolute;
  bottom: -7px;
  left: 50%;
  width: 14px;
  height: 14px;
  background: var(--color-bg-card);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transform: translateX(-50%) rotate(45deg);
  box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.06);
}
@keyframes preview-in {
  from { opacity: 0; transform: translateX(-50%) translateY(6px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
[data-theme="Utterlog"] .new-badge-pulse {
  animation: new-shake 1.5s ease-in-out infinite;
}
@keyframes new-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-3px); }
  40% { transform: translateX(3px); }
  60% { transform: translateX(-2px); }
  80% { transform: translateX(2px); }
}
[data-theme="Utterlog"] .blog-prose strong { font-weight: 600; color: var(--color-text-main); }

/* Blockquote */
[data-theme="Utterlog"] .blog-prose blockquote {
  position: relative;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-left: 3px solid var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 4%, var(--color-bg-soft));
  border-radius: 0 4px 4px 0;
  color: var(--color-text-sub);
  font-style: italic;
}
[data-theme="Utterlog"] .blog-prose blockquote p:last-child { margin-bottom: 0; }

[data-theme="Utterlog"] .blog-prose ul { list-style-type: disc; padding-left: 1.5rem; margin-bottom: 1.5rem; }
[data-theme="Utterlog"] .blog-prose ol { list-style-type: decimal; padding-left: 1.5rem; margin-bottom: 1.5rem; }
[data-theme="Utterlog"] .blog-prose li { line-height: 1.7; margin-bottom: 0.375rem; }
[data-theme="Utterlog"] .blog-prose li::marker { color: var(--color-primary); }

/* Inline code */
[data-theme="Utterlog"] .blog-prose code:not(pre code) {
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-bg-soft));
  color: var(--color-primary-active);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  font-weight: 500;
  border: 1px solid color-mix(in srgb, var(--color-primary) 12%, transparent);
}

/* AI Summary */

/* Table of Contents — positioned outside content */

/* ========================================
   Post Navigation (prev/next + related)
   ======================================== */
[data-theme="Utterlog"] .post-nav-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

/* Prev / Next */
[data-theme="Utterlog"] .post-prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 0;
}
[data-theme="Utterlog"] .post-prev-next-link {
  position: relative;
  display: flex;
  align-items: stretch;
  text-decoration: none;
  min-height: 80px;
  overflow: hidden;
}
[data-theme="Utterlog"] .post-prev-next-link:hover .post-prev-next-cover img { transform: scale(1.05); }
[data-theme="Utterlog"] .post-prev-next-link.next { text-align: right; }
[data-theme="Utterlog"] .post-prev-next-cover {
  position: absolute;
  inset: 0;
  z-index: 0;
}
[data-theme="Utterlog"] .post-prev-next-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
[data-theme="Utterlog"] .post-prev-next-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
}
[data-theme="Utterlog"] .post-prev-next-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 16px 24px;
  position: relative;
  z-index: 1;
}
[data-theme="Utterlog"] .post-prev-next-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: rgba(255,255,255,0.75);
}
[data-theme="Utterlog"] .post-prev-next-link.next .post-prev-next-label { justify-content: flex-end; }
[data-theme="Utterlog"] .post-prev-next-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Related posts tabs */
[data-theme="Utterlog"] .post-related-section {
  margin-bottom: 1rem;
}
[data-theme="Utterlog"] .post-related-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
}
[data-theme="Utterlog"] .post-related-tab {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-sub);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
[data-theme="Utterlog"] .post-related-tab:hover:not(:disabled) { color: var(--color-text-main); }
[data-theme="Utterlog"] .post-related-tab:disabled { opacity: 0.4; cursor: default; }
[data-theme="Utterlog"] .post-related-tab.active {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}
[data-theme="Utterlog"] .post-related-tab-count {
  font-size: 11px;
  padding: 0 5px;
  border-radius: 4px;
  background: var(--color-bg-soft);
  color: var(--color-text-dim);
  font-weight: 500;
  line-height: 1.5;
}

/* Related posts — 卡片网格。
   PostNavigation.tsx 的渲染从老的"标题 + 阅读量"列表升级到了带封面
   的卡片网格（与 Azure / Chred 主题已保持一致的 className 命名），
   Utterlog 主题之前还停留在老 .post-related-item* schema，结果就是
   样式完全不接 + 封面图不带 object-fit:cover 把高度撑爆 —— 这就是
   "样式没有，图片非常大" 的根因。本节套用新 schema，视觉风格沿用
   Utterlog 极简圆角白底基调，区别于 Azure 的 hover-overlay 黑卡。 */
[data-theme="Utterlog"] .post-related-refresh {
  margin-left: auto;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--color-text-dim);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.15s;
}
[data-theme="Utterlog"] .post-related-refresh:hover { color: var(--color-primary); }

[data-theme="Utterlog"] .post-related-grid {
  display: grid;
  /* 3 列 × 2 行 = 6 篇/页（PostPage 传 pageSize=6 配套）。
     800px 极简阅读宽度下 5 列太挤，3 列每张约 240px。窄屏退回 2 列。 */
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 16px 0 4px;
}
@media (max-width: 720px) {
  [data-theme="Utterlog"] .post-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
[data-theme="Utterlog"] .post-related-card {
  text-decoration: none;
  display: block;
  border-radius: 4px;
  overflow: hidden;
}
[data-theme="Utterlog"] .post-related-card-cover {
  position: relative;
  /* 关键：固定宽高比 + object-fit cover。少这两条原图任意尺寸
     都会撑爆，这就是用户报"图片非常大"的具体机制。 */
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-bg-soft);
}
[data-theme="Utterlog"] .post-related-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
[data-theme="Utterlog"] .post-related-card:hover .post-related-card-cover img {
  transform: scale(1.04);
}
[data-theme="Utterlog"] .post-related-card-date {
  position: absolute;
  top: 6px;
  right: 6px;
  padding: 2px 6px;
  font-size: 10px;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 4px;
}
[data-theme="Utterlog"] .post-related-card-cat {
  position: absolute;
  top: 6px;
  left: 6px;
  padding: 2px 6px;
  font-size: 10px;
  font-weight: 500;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 3px;
}
/* Hover overlay —— 跟 Azure 主题一致：平时只显示封面 + 角标；
   hover 时全卡黑色渐变浮起 + 标题滑入；继续 hover 浏览/评论数淡入。 */
[data-theme="Utterlog"] .post-related-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(0, 0, 0, 0.78));
  display: flex;
  align-items: flex-end;
  opacity: 0;
  transition: opacity 0.25s;
  z-index: 1;
}
[data-theme="Utterlog"] .post-related-card:hover .post-related-card-overlay,
[data-theme="Utterlog"] .post-related-card-cover:hover .post-related-card-overlay,
[data-theme="Utterlog"] .post-related-card:focus-within .post-related-card-overlay {
  opacity: 1;
}
[data-theme="Utterlog"] .post-related-card-bottom {
  padding: 10px 12px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 5px;
  transform: translateY(16px);
  transition: transform 0.25s;
}
[data-theme="Utterlog"] .post-related-card:hover .post-related-card-bottom,
[data-theme="Utterlog"] .post-related-card-cover:hover .post-related-card-bottom,
[data-theme="Utterlog"] .post-related-card:focus-within .post-related-card-bottom {
  transform: translateY(0);
}
[data-theme="Utterlog"] .post-related-card-title {
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
[data-theme="Utterlog"] .post-related-card-stats {
  font-size: 10.5px;
  color: rgba(255, 255, 255, 0.78);
  display: flex;
  align-items: center;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.25s 0.05s;
}
[data-theme="Utterlog"] .post-related-card:hover .post-related-card-stats,
[data-theme="Utterlog"] .post-related-card-cover:hover .post-related-card-stats,
[data-theme="Utterlog"] .post-related-card:focus-within .post-related-card-stats {
  opacity: 1;
}
[data-theme="Utterlog"] .post-related-empty {
  grid-column: 1 / -1;
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-dim);
}

[data-theme="Utterlog"] .post-list-link:hover .post-list-title { color: var(--color-primary) !important; }

/* Pre blocks without language class */
[data-theme="Utterlog"] .blog-prose pre:not([class*="language-"]) { background-color: #1d1f21; color: #c5c8c6; }
[data-theme="Utterlog"] .blog-prose pre:not([class*="language-"]) code { background: none; padding: 0; color: inherit; font-family: var(--font-mono); }

/* HR, Table */
[data-theme="Utterlog"] .blog-prose hr { margin: 2rem 0; border: none; border-top: 1px solid var(--color-border); }
[data-theme="Utterlog"] .blog-prose table { width: 100%; margin: 1.5rem 0; border-collapse: collapse; }
[data-theme="Utterlog"] .blog-prose th { background-color: var(--color-bg-soft); text-align: left; padding: 0.5rem 1rem; font-weight: 600; font-size: 0.875rem; border: 1px solid var(--color-border); }
[data-theme="Utterlog"] .blog-prose td { padding: 0.5rem 1rem; font-size: 0.875rem; border: 1px solid var(--color-border); }