/* ==========================================================================
   XFM Theme · post.css
   文章页外壳 / 正文排版 / 代码块 / 文末区块
   ========================================================================== */

/* --------------------------------------------------------------------------
   文章容器
   -------------------------------------------------------------------------- */
.post-view,
.page-view {
  padding: 30px 34px 34px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--xfm-radius-lg);
  box-shadow: var(--shadow-sm);
}

body.mode-notes .post-view,
body.mode-docs .page-view {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  padding: 0 0 10px;
}

.post-view-title {
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1.28;
  letter-spacing: -0.028em;
  margin-bottom: 14px;
}

/* ---- 封面 Hero 形态 ---- */
.post-cover-hero {
  position: relative;
  margin: -30px -34px 26px;
  border-radius: var(--xfm-radius-lg) var(--xfm-radius-lg) 0 0;
  overflow: hidden;
  aspect-ratio: 21 / 9;
  min-height: 240px;
  background: var(--c-surface-hover);
}

body.mode-notes .post-cover-hero,
body.mode-docs .post-cover-hero {
  margin-left: 0;
  margin-right: 0;
}

.post-cover-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-hero-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 11, 18, 0.88) 6%, rgba(8, 11, 18, 0.34) 52%, rgba(8, 11, 18, 0.12));
}

.cover-hero-inner {
  position: absolute;
  inset: auto 0 0 0;
  padding: 26px 34px 28px;
  color: #fff;
}

.cover-hero-inner .post-view-title {
  color: #fff;
  margin-bottom: 10px;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.4);
}

/* ---- meta ---- */
.post-view-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-bottom: 26px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-text-muted);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.meta-item .xfm-icon {
  width: 14px;
  height: 14px;
  opacity: 0.75;
}

.meta-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
}

.meta-author span {
  font-weight: 600;
  color: var(--c-text-soft);
}

.meta-categories a {
  color: var(--xfm-primary);
  font-weight: 600;
}

.meta-categories i {
  font-style: normal;
  margin-right: 3px;
  color: var(--c-text-faint);
}

.post-view-meta.is-light {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
  color: rgba(255, 255, 255, 0.82);
}

.post-view-meta.is-light .xfm-icon {
  opacity: 0.9;
}

.post-view-meta.is-light a,
.post-view-meta.is-light strong {
  color: #fff;
}

.post-view-meta.is-light .meta-author span {
  color: rgba(255, 255, 255, 0.92);
}

/* ==========================================================================
   正文排版
   ========================================================================== */
.xfm-content {
  font-size: var(--fs-md);
  line-height: 1.82;
  color: var(--c-text-soft);
  letter-spacing: 0.002em;
}

.xfm-content > * + * {
  margin-top: 1.15em;
}

.xfm-content > :first-child {
  margin-top: 0;
}

/* ---- 标题 ---- */
.xfm-content .headline,
.xfm-content h1,
.xfm-content h2,
.xfm-content h3,
.xfm-content h4,
.xfm-content h5,
.xfm-content h6 {
  position: relative;
  margin-top: 1.9em;
  margin-bottom: 0.75em;
  font-weight: 700;
  color: var(--c-text);
  scroll-margin-top: calc(var(--xfm-nav-h) + 20px);
}

.xfm-content h2,
.xfm-content .headline:is(h2) {
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--c-border);
}

.xfm-content h3 {
  font-size: 1.22em;
}

.xfm-content h4 {
  font-size: 1.06em;
}

/* 标题锚点 */
.xfm-content .headline:hover::after {
  content: "#";
  position: absolute;
  left: -0.85em;
  font-weight: 400;
  color: var(--xfm-primary);
  opacity: 0.75;
}

body.mode-notes .xfm-content .headline:hover::after,
body.mode-docs .xfm-content .headline:hover::after {
  left: auto;
  right: 100%;
  padding-right: 0.4em;
}

/* ---- 链接 ---- */
.xfm-content p > a,
.xfm-content li > a,
.xfm-content td > a {
  padding-bottom: 1px;
  font-weight: 500;
  border-bottom: 1px solid rgba(var(--xfm-primary-rgb), 0.36);
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.xfm-content p > a:hover,
.xfm-content li > a:hover,
.xfm-content td > a:hover {
  border-bottom-color: var(--xfm-primary);
  background: var(--c-primary-bg);
}

.xfm-content .ext-link::after {
  content: "";
  display: inline-block;
  width: 0.72em;
  height: 0.72em;
  margin-left: 0.2em;
  vertical-align: baseline;
  background: currentColor;
  opacity: 0.5;
  clip-path: polygon(28% 0 100% 0 100% 12% 58% 44% 44% 58% 12% 100% 0 100% 0 28% 44% 44%);
  -webkit-mask-image: linear-gradient(#000, #000);
}

.xfm-content .ext-link:hover::after {
  opacity: 0.85;
}

/* ---- 强调 ---- */
.xfm-content strong {
  font-weight: 700;
  color: var(--c-text);
}

.xfm-content em {
  font-style: italic;
}

.xfm-content del {
  color: var(--c-text-faint);
}

.xfm-content u {
  text-decoration-color: rgba(var(--xfm-primary-rgb), 0.5);
  text-underline-offset: 3px;
}

.xfm-content hr {
  margin: 2.4em 0;
  background: linear-gradient(90deg, transparent, var(--c-border-strong), transparent);
}

/* ---- 列表 ---- */
.xfm-content ul,
.xfm-content ol {
  padding-left: 1.5em;
}

.xfm-content ul {
  list-style: none;
}

.xfm-content ul > li {
  position: relative;
}

.xfm-content ul > li::before {
  content: "";
  position: absolute;
  left: -1.05em;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--xfm-primary);
  opacity: 0.55;
}

.xfm-content ol {
  list-style: decimal;
}

.xfm-content ol > li::marker {
  color: var(--xfm-primary);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.xfm-content li + li {
  margin-top: 0.4em;
}

.xfm-content li > ul,
.xfm-content li > ol {
  margin-top: 0.4em;
}

/* 任务列表 */
.xfm-content li.task-list-item {
  list-style: none;
  padding-left: 0.2em;
}

.xfm-content li.task-list-item::before {
  display: none;
}

.xfm-content li.task-list-item input[type="checkbox"] {
  width: 15px;
  height: 15px;
  margin-right: 0.55em;
  accent-color: var(--xfm-primary);
  vertical-align: -1px;
}

/* ---- 引用 ---- */
.xfm-content blockquote {
  position: relative;
  padding: 1em 1.2em 1em 1.25em;
  background: var(--c-surface-alt);
  border-radius: 0 var(--xfm-radius) var(--xfm-radius) 0;
  color: var(--c-text-muted);
}

.xfm-content blockquote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  bottom: 0.6em;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--xfm-primary), color-mix(in srgb, var(--xfm-primary) 40%, #a855f7));
}

.xfm-content blockquote > :last-child {
  margin-bottom: 0;
}

.xfm-content blockquote p + p {
  margin-top: 0.8em;
}

/* ---- 行内代码 ---- */
.xfm-content :not(pre) > code {
  padding: 0.15em 0.42em;
  margin: 0 0.15em;
  font-size: 0.88em;
  color: color-mix(in srgb, var(--xfm-primary) 76%, var(--c-text));
  background: var(--c-primary-bg);
  border: 1px solid rgba(var(--xfm-primary-rgb), 0.14);
  border-radius: 6px;
  word-break: break-word;
}

/* ---- 图片 ---- */
.xfm-content img {
  border-radius: var(--xfm-radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease);
}

.xfm-content img[data-zoomable="true"] {
  cursor: zoom-in;
}

.xfm-content img[data-zoomable="true"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.xfm-content figure {
  margin: 1.6em 0;
}

.xfm-content figure img {
  margin-bottom: 0;
}

.xfm-content figcaption {
  margin-top: 0.7em;
  font-size: 13px;
  text-align: center;
  color: var(--c-text-faint);
}

/* ---- 表格容器 ---- */
.table-wrap {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border: 1px solid var(--c-border);
  border-radius: var(--xfm-radius);
}

.table-wrap > table {
  margin: 0;
  min-width: 100%;
  font-size: 0.94em;
  border-collapse: collapse;
}

.xfm-content th,
.xfm-content td {
  padding: 11px 15px;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
  white-space: nowrap;
}

.xfm-content thead th {
  position: sticky;
  top: 0;
  font-size: 0.92em;
  font-weight: 700;
  color: var(--c-text);
  background: var(--c-surface-alt);
  backdrop-filter: blur(4px);
}

.xfm-content tbody tr {
  transition: background-color var(--t-fast) var(--ease);
}

.xfm-content tbody tr:hover {
  background: var(--c-surface-hover);
}

.xfm-content tbody tr:last-child td {
  border-bottom: 0;
}

/* ==========================================================================
   代码块
   ========================================================================== */
.xfm-content figure.highlight,
.xfm-content .code-block {
  position: relative;
  margin: 1.5em 0;
  overflow: hidden;
  background: var(--code-bg, var(--c-surface-alt));
  border: 1px solid var(--c-border);
  border-radius: var(--xfm-radius);
  box-shadow: var(--shadow-xs);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--c-border);
  background: color-mix(in srgb, var(--code-bg, var(--c-surface-alt)) 60%, var(--c-surface));
}

.code-dots {
  display: inline-flex;
  gap: 6px;
  flex: none;
}

.code-dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #f0655c;
}

.code-dots i:nth-child(2) { background: #f2be4b; }
.code-dots i:nth-child(3) { background: #61c454; }

.code-lang {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--c-text-faint);
}

.code-tools {
  display: flex;
  gap: 4px;
  flex: none;
}

.code-tool {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 9px;
  font-family: inherit;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--c-text-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 7px;
  transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.code-tool .xfm-icon {
  width: 13px;
  height: 13px;
}

.code-tool:hover {
  color: var(--xfm-primary);
  background: var(--c-surface);
  border-color: var(--c-border);
}

.code-tool.is-done {
  color: var(--c-success);
}

/* 代码主体 */
.xfm-content .highlight > table,
.xfm-content .highlight > pre {
  margin: 0;
  border: 0;
  background: transparent;
}

.xfm-content .highlight table {
  display: block;
  width: 100%;
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.xfm-content .highlight table tr {
  display: flex;
}

.xfm-content .highlight .gutter,
.xfm-content .highlight .code {
  display: block;
  padding: 0;
  border: 0;
  vertical-align: top;
}

.xfm-content .highlight .gutter {
  flex: none;
  padding: 14px 0 14px 14px;
  text-align: right;
  color: var(--c-text-faint);
  user-select: none;
  -webkit-user-select: none;
  opacity: 0.62;
}

.xfm-content .highlight .gutter pre {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  text-align: right;
}

.xfm-content .highlight .code {
  flex: 1 1 auto;
  min-width: 0;
  padding: 14px 16px 14px 12px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.xfm-content .highlight pre,
.xfm-content .highlight code {
  font-size: 13.4px;
  line-height: 1.72;
  color: var(--code-fg);
  background: transparent;
  tab-size: 2;
}

.xfm-content .highlight .line {
  min-height: 1.72em;
}

/* 折叠态 */
figure.highlight[data-folded="true"] {
  max-height: 340px;
}

figure.highlight[data-folded="true"] .code-scroll,
figure.highlight[data-folded="true"] > table {
  max-height: 268px;
  overflow: hidden;
}

.code-fold-mask {
  position: absolute;
  inset: auto 0 0 0;
  height: 92px;
  display: grid;
  place-items: end center;
  padding-bottom: 14px;
  background: linear-gradient(to top, var(--code-bg, var(--c-surface-alt)) 32%, transparent);
  pointer-events: none;
}

.code-fold-mask span {
  pointer-events: auto;
  padding: 5px 16px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--xfm-primary);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

figure.highlight.is-folded .code-expand .xfm-icon {
  transform: rotate(180deg);
}

/* ==========================================================================
   文末区块
   ========================================================================== */
.post-tags-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--c-border);
}

.tags-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-text-soft);
}

/* ---- 分享 ---- */
.post-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
}

.share-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text-muted);
}

.share-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.share-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--c-text-muted);
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  border-radius: 50%;
  transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.share-btn:hover {
  color: #fff;
  background: var(--xfm-primary);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(var(--xfm-primary-rgb), 0.3);
}

.share-btn.share-copy.is-done {
  color: var(--c-success);
  background: var(--c-success-bg);
  border-color: transparent;
}

/* ---- 版权 ---- */
.post-copyright {
  margin-top: 26px;
  padding: 18px 20px;
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--xfm-primary);
  border-radius: var(--xfm-radius);
  font-size: 13.5px;
  color: var(--c-text-muted);
}

.copyright-author {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.copyright-author img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
}

.copyright-author div {
  display: flex;
  flex-direction: column;
  line-height: 1.4;
}

.copyright-author strong {
  font-size: 14.5px;
  color: var(--c-text);
}

.copyright-author span {
  font-size: 12px;
  color: var(--c-text-faint);
}

.copyright-text {
  line-height: 1.75;
}

.copyright-meta {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--c-border);
}

.copyright-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  word-break: break-all;
}

/* ---- 打赏 ---- */
.post-reward {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}

.reward-text {
  font-size: 13.5px;
  color: var(--c-text-muted);
}

.reward-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #f43f5e, #f97316);
  border-radius: 24px;
  box-shadow: 0 6px 18px rgba(244, 63, 94, 0.28);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.reward-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 26px rgba(244, 63, 94, 0.36);
}

.reward-btn:hover .xfm-icon {
  animation: xfm-beat 0.7s var(--ease) infinite;
}

@keyframes xfm-beat {
  0%, 100% { transform: scale(1); }
  30% { transform: scale(1.22); }
  50% { transform: scale(1.05); }
}

.reward-panels {
  display: none;
  gap: 20px;
  margin-top: 6px;
}

.reward-panels.is-open {
  display: flex;
  animation: xfm-fade-up var(--t-base) var(--ease-out) both;
}

.reward-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--c-text-muted);
}

.reward-panel img {
  width: 158px;
  border-radius: var(--xfm-radius);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
}

/* ---- 上下篇 ---- */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 26px;
}

.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px 18px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--xfm-radius);
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease);
}

a.post-nav-item:hover {
  transform: translateY(-2px);
  border-color: var(--c-primary-soft);
  box-shadow: var(--shadow-md);
}

.post-nav-item.is-next {
  text-align: right;
  align-items: flex-end;
}

.post-nav-item.is-empty {
  opacity: 0.45;
}

/* 空占位：保留网格位次以便另一侧对齐，但不渲染可见卡片 */
.post-nav-item.is-blank {
  visibility: hidden;
  box-shadow: none;
}

.nav-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--xfm-primary);
}

.nav-label .xfm-icon {
  width: 13px;
  height: 13px;
}

.nav-title {
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-nav-item.is-empty .nav-title {
  color: var(--c-text-faint);
}

/* ---- 相关推荐 ---- */
.post-related {
  margin-top: 40px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
  gap: 14px;
}

.related-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--xfm-radius);
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease);
}

.related-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-primary-soft);
  box-shadow: var(--shadow-md);
}

.related-cover {
  display: grid;
  place-items: center;
  flex: none;
  width: 46px;
  height: 46px;
  overflow: hidden;
  border-radius: 11px;
  color: var(--c-text-faint);
  background: var(--c-surface-hover);
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-cover .xfm-icon {
  width: 20px;
  height: 20px;
  opacity: 0.5;
}

.related-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.related-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card:hover .related-title {
  color: var(--xfm-primary);
}

.related-date {
  font-size: 11.5px;
  color: var(--c-text-faint);
}

/* ---- 文档模式页脚 ---- */
.doc-page-foot {
  margin-top: 40px;
}

.doc-updated {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-top: 16px;
  font-size: 13px;
  color: var(--c-text-muted);
  border-top: 1px solid var(--c-border);
}

.doc-edit {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  font-size: 13px;
}

.post-custom-footer {
  margin-top: 24px;
}

/* ---- 过时提醒 ---- */
.outdated-notice {
  margin-bottom: 22px;
}