/* ============================================
   Warmpaper - A Claude-inspired Typecho Theme
   Converted from hexo-theme-warmpaper
   ============================================ */

/* --- CSS Variables --- */
/* --- CSS Variables (Green Toy Frog Theme) --- */
:root {
  --color-bg: #F4F6F4; /* 带有微弱绿意的米灰底色 */
  --color-surface: #FFFFFF;
  --color-surface-hover: #F0F5F1; /* 浅绿悬停色 */
  --color-code-bg: #EAEFEA;
  --color-accent: #2E5C3A; /* 青蛙的主体墨绿色 */
  --color-accent-hover: #D36C22; /* 青蛙侧面的复古橙黄色 */
  --color-text: #2D332F;
  --color-text-secondary: #5C6660;
  --color-text-tertiary: #89948D;
  --color-border: #DCE3DD;
  --color-border-light: #E8EFE9;
  --grid-color: rgba(46, 92, 58, 0.08); /* 极淡的墨绿色线条 */
  --grid-color-strong: rgba(46, 92, 58, 0.15);

  --grid-size: 24px;
  --content-width: 800px;
  --page-width: 1200px;
  --sidebar-width: 200px;
  --header-height: 60px;
  --font-sans: 'LXGW WenKai GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-serif: 'LXGW WenKai GB', 'Georgia', 'Times New Roman', serif;
  --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  --radius: 8px;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.03);
}

/* --- Dark Mode: follows system when no manual override --- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #1F1B17;
    --color-surface: #2B2520;
    --color-surface-hover: #332C26;
    --color-code-bg: #15110E;
    --color-accent: #E89576;
    --color-accent-hover: #F0A88B;
    --color-text: #EDE4D9;
    --color-text-secondary: #A8A099;
    --color-text-tertiary: #756E66;
    --color-border: #3A332C;
    --color-border-light: #2F2924;
    --grid-color: rgba(218, 119, 86, 0.045);
    --grid-color-strong: rgba(218, 119, 86, 0.08);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.25);
  }
}

/* --- Dark Mode: forced via [data-theme="dark"] --- */
:root[data-theme="dark"] {
  --color-bg: #1F1B17;
  --color-surface: #2B2520;
  --color-surface-hover: #332C26;
  --color-code-bg: #15110E;
  --color-accent: #4CAF65; /* 暗黑模式下更亮一点的青蛙绿 */
  --color-accent-hover: #E68A40; /* 暗黑模式下的橙色 */
  --grid-color: rgba(76, 175, 101, 0.05); /* 暗黑模式下的浅绿线条 */
  --color-text: #EDE4D9;
  --color-text-secondary: #A8A099;
  --color-text-tertiary: #756E66;
  --color-border: #3A332C;
  --color-border-light: #2F2924;
  --grid-color-strong: rgba(218, 119, 86, 0.08);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.25);
}

/* --- Reset --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

/* --- Base --- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  /* 使用简单的复古斜线条替换原本的复杂网格 */
  background-image: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 15px,
    var(--grid-color) 15px,
    var(--grid-color) 16px
  );
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-accent-hover);
}

img {
  max-width: 100%;
  height: auto;
}

/* --- Site Wrapper --- */
.site-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.header-inner {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo {
  width: 28px;
  height: 28px;
}

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

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--color-accent);
}

/* --- Hamburger Toggle (hidden on desktop) --- */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 10;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.theme-toggle {
  background: none;
  border: none;
  padding: 6px;
  margin-left: 4px;
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, color 0.2s;
}

.theme-toggle:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  display: none;
}

.theme-toggle[data-theme-state="light"] .icon-sun,
.theme-toggle[data-theme-state="dark"] .icon-moon {
  display: block;
}

/* --- Profile Card (Homepage) --- */
.profile-card {
  max-width: var(--content-width);
  margin: 0 auto 2rem;
  text-align: center;
  padding: 2rem 1.5rem 1.75rem;
}

.profile-avatar {
  width: 88px;
  height: 88px;
  object-fit: contain;
  margin-bottom: 0.75rem;
}

.profile-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.profile-description {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.profile-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.profile-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.82rem;
  color: var(--color-text-tertiary);
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  border: 1px solid var(--color-border-light);
  background: var(--color-surface);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.profile-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
}

.profile-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

/* --- Post List (Homepage) --- */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: var(--content-width);
  margin: 0 auto;
}

/* --- Post Card --- */
.post-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  transition: box-shadow 0.25s, transform 0.25s;
}

.post-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.post-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

.post-card-title a {
  color: var(--color-text);
}

.post-card-title a:hover {
  color: var(--color-accent);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
  margin-bottom: 0.75rem;
}

.post-card-meta .separator {
  color: var(--color-border);
}

.post-card-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.post-card-excerpt p {
  margin: 0;
}

.read-more {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-accent);
}

.read-more:hover {
  color: var(--color-accent-hover);
}

.post-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.post-card-tags a {
  font-size: 0.78rem;
  color: var(--color-text-tertiary);
  background: var(--color-bg);
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  transition: color 0.2s, background 0.2s;
}

.post-card-tags a:hover {
  color: var(--color-accent);
  background: var(--color-surface-hover);
}

/* Add # prefix to tags (Typecho doesn't add it in HTML) */
.post-card-tags a::before,
.post-tags a::before {
  content: '#';
}

/* --- Pagination --- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  font-size: 0.9rem;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  border-radius: 4px;
  color: var(--color-text-secondary);
  transition: color 0.2s, background 0.2s;
}

.pagination a:hover {
  color: var(--color-accent);
  background: var(--color-surface);
}

.pagination .current {
  color: var(--color-surface);
  background: var(--color-accent);
  font-weight: 600;
}

.pagination .space {
  color: var(--color-text-tertiary);
}

/* --- Typecho page-navigator compatibility --- */
.pagination .page-navigator {
  margin-top: 0;
}

.page-navigator {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  font-size: 0.9rem;
  list-style: none;
  padding: 0;
}

.page-navigator li {
  display: inline-flex;
}

.page-navigator a,
.page-navigator span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  border-radius: 4px;
  color: var(--color-text-secondary);
  transition: color 0.2s, background 0.2s;
}

.page-navigator a:hover {
  color: var(--color-accent);
  background: var(--color-surface);
}

.page-navigator .current a,
.page-navigator .current span {
  color: var(--color-surface);
  background: var(--color-accent);
  font-weight: 600;
}

/* --- Post Detail Page --- */
.post {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  padding: 2.5rem 2rem;
  max-width: var(--content-width);
  margin: 0 auto;
}

.post-header {
  text-align: center;
  margin-bottom: 2rem;
}

.post-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.post-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--color-text-tertiary);
  flex-wrap: wrap;
}

.post-meta .separator {
  color: var(--color-border);
}

/* --- Post Body + TOC Layout --- */
.post-body-wrapper {
  position: relative;
}

/* --- Post Content Typography --- */
.post-content {
  font-family: var(--font-serif);
  font-size: 1.06rem;
  line-height: 1.85;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  font-family: var(--font-serif);
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.35;
  margin-top: 2em;
  margin-bottom: 0.75em;
}

.post-content h1 { font-size: 1.75rem; }
.post-content h2 { font-size: 1.45rem; }
.post-content h3 { font-size: 1.2rem; }
.post-content h4 { font-size: 1.05rem; }

.post-content p {
  margin-bottom: 1.25em;
}

.post-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(218, 119, 86, 0.3);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}

.post-content a:hover {
  text-decoration-color: var(--color-accent);
}

.post-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 0.5em 1.25em;
  margin: 1.5em 0;
  color: var(--color-text-secondary);
  background: rgba(218, 119, 86, 0.04);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

.post-content ul,
.post-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.25em;
}

.post-content li {
  margin-bottom: 0.35em;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--color-text);
}

.post-content pre {
  background: var(--color-code-bg);
  border-radius: var(--radius);
  padding: 1.25em;
  margin: 1.5em 0;
  overflow-x: auto;
  line-height: 1.55;
  border: 1px solid var(--color-border-light);
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.88rem;
}

/* --- Code block syntax highlighting (Typecho HyperDown) --- */
.post-content pre code span,
.post-content pre span {
  font-family: var(--font-mono);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.95rem;
}

.post-content th,
.post-content td {
  padding: 0.6em 1em;
  border: 1px solid var(--color-border);
  text-align: left;
}

.post-content th {
  background: var(--color-code-bg);
  font-weight: 600;
}

.post-content tr:nth-child(even) {
  background: rgba(240, 235, 227, 0.3);
}

.post-content img {
  border-radius: var(--radius);
  margin: 1em 0;
}

.post-content hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 2em 0;
}

/* --- TOC Sidebar --- */
.toc-sidebar {
  position: absolute;
  left: calc(100% + 2rem);
  top: 0;
  width: var(--sidebar-width);
}

.toc-wrapper {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
  max-height: calc(100vh - var(--header-height) - 4rem);
  overflow-y: auto;
  padding-left: 1rem;
  border-left: 1px solid var(--color-border-light);
}

.toc-wrapper::-webkit-scrollbar {
  width: 3px;
}

.toc-wrapper::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.toc-title {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-tertiary);
  margin-bottom: 0.75rem;
}

.toc {
  list-style: none;
  padding: 0;
}

.toc ol {
  list-style: none;
  padding-left: 0.85rem;
}

.toc li {
  margin-bottom: 0.25rem;
}

.toc a {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  display: block;
  padding: 0.2rem 0;
  line-height: 1.45;
  transition: color 0.2s;
}

.toc a:hover {
  color: var(--color-text);
}

.toc a.active {
  color: var(--color-accent);
  font-weight: 500;
}

/* --- Post Footer --- */
.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border-light);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.post-tags a {
  font-size: 0.82rem;
  color: var(--color-text-tertiary);
  background: var(--color-bg);
  padding: 0.2rem 0.65rem;
  border-radius: 3px;
  border: 1px solid var(--color-border-light);
  transition: color 0.2s, border-color 0.2s;
}

.post-tags a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.post-nav {
  display: flex;
  gap: 1rem;
}

.post-nav-prev {
  margin-right: auto;
  min-width: 0;
  max-width: 45%;
  overflow: hidden;
}

.post-nav-next {
  margin-left: auto;
  min-width: 0;
  max-width: 45%;
  overflow: hidden;
}

.post-nav-prev:empty,
.post-nav-next:empty {
  display: none;
}

.post-nav a {
  display: inline-block;
  max-width: 100%;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
}

.post-nav a:hover {
  color: var(--color-accent);
}.post-nav a:hover {
  color: var(--color-accent);
}

/* --- Page (static) --- */
.page-content {
  max-width: var(--content-width);
  margin: 0 auto;
}

.page-content h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* --- Archive --- */
.archive {
  max-width: var(--content-width);
  margin: 0 auto;
}

.archive-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
}

.archive-year {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border-light);
}

.archive-post {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.5rem 0;
}

.archive-post-date {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.archive-post-title a {
  font-size: 1rem;
  color: var(--color-text);
}

.archive-post-title a:hover {
  color: var(--color-accent);
}

/* --- Category / Tag Header --- */
.category-title,
.tag-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
}

.category-title span,
.tag-title span {
  color: var(--color-accent);
}

/* --- Tags Index (cloud) --- */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

.tag-cloud-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: color 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.tag-cloud-item:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-1px);
}

.tag-cloud-count {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  background: var(--color-bg);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  min-width: 1.4em;
  text-align: center;
}

/* --- Categories Index (list) --- */
.category-list {
  display: flex;
  flex-direction: column;
}

.category-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
  transition: color 0.2s;
}

.category-list-item:first-child {
  border-top: 1px solid var(--color-border-light);
}

.category-list-item:hover {
  color: var(--color-accent);
}

.category-list-name {
  font-size: 1rem;
}

.category-list-count {
  font-size: 0.82rem;
  color: var(--color-text-tertiary);
  background: var(--color-bg);
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  min-width: 1.8em;
  text-align: center;
}

/* --- Shared empty state --- */
.no-data {
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 0.95rem;
  margin-top: 2rem;
}

/* --- Footer --- */
.site-footer {
  margin-top: 3rem;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border-light);
}

.site-footer p {
  margin: 0.25rem 0;
}

.site-footer a {
  color: var(--color-text-secondary);
}

.site-footer a:hover {
  color: var(--color-accent);
}

/* --- Comments (Typecho native) --- */
/* ============================================
   Typecho Comments (Island Style)
   ============================================ */

/* 1. 评论大区变回完全透明的容器 */
.comments-area {
  max-width: var(--content-width);
  margin: 3rem auto 0;
  padding-top: 2rem;
  background: transparent;
  border-top: 1px dashed var(--color-border);
}

.comments-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

/* 重置原生列表样式 */
.comment-list, 
.comment-children {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* 2. 每一条评论变成一个独立的“孤岛卡片” */
.comment-body {
  position: relative; /* 【关键】给右上角的回复按钮做绝对定位的参考坐标 */
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: transform 0.2s, box-shadow 0.2s;
}

.comment-body:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

/* 楼中楼嵌套：恢复正常的正数间距，避免向上覆盖遮挡 */
.comment-children {
  margin-left: 2rem;
  margin-top: 1rem; /* 改为正数，拉开子评论距离 */
  margin-bottom: 1.5rem;
}

.comment-children .comment-body {
  padding: 1.25rem;
  border-left: 4px solid var(--color-accent);
}

/* 头像与名字区域 (靠左浮动) */
.comment-author {
  float: left;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.comment-author .avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border-light);
}

.comment-author .fn,
.comment-author .fn a {
  font-style: normal;
  font-weight: 600;
  color: var(--color-text);
  font-size: 1.1rem;
}

/* 评论时间 (同行显示，利用同等行高完美垂直居中) */
.comment-meta {
  float: left;
  margin-left: 0.8rem;
  line-height: 44px; /* 与头像高度保持一致 */
}

.comment-meta a {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

/* 评论内容 (清除浮动，确保文字渲染在头像和日期的正下方) */
.comment-content {
  clear: both;
  padding-top: 0.5rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text);
  overflow-wrap: anywhere;
}

.comment-content p {
  margin-bottom: 0.75em;
}

.comment-content p:last-child {
  margin-bottom: 0;
}

/* 回复按钮：提取到卡片右上角，彻底解决被下方内容遮盖的问题 */
.comment-reply {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  margin-top: 0;
}

.comment-reply a {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 500;
  padding: 4px 12px;
  background: var(--grid-color-strong);
  border-radius: 4px;
  transition: all 0.2s;
}

.comment-reply a:hover {
  background: var(--color-accent);
  color: var(--color-surface);
}

/* 取消回复按钮 */
.cancel-comment-reply {
  margin-bottom: 1rem;
}

.cancel-comment-reply a {
  font-size: 0.9rem;
  color: var(--color-accent-hover);
}

/* ============================================
   Typecho Comments Form (Respond)
   ============================================ */

/* 3. 回复表单也是一个独立的大孤岛 */
.comment-respond {
  margin-top: 3rem;
  padding: 2rem;
  background: var(--color-surface); /* 实体白底 */
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
}

.comment-reply-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.comment-form p {
  margin-bottom: 1.25rem;
}

.comment-form label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}

.comment-form .required {
  color: var(--color-accent);
}

/* 表单输入框 */
.comment-form .text,
.comment-form .textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg); /* 给输入框一点灰绿色背景以示区分 */
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.comment-form .text:focus,
.comment-form .textarea:focus {
  border-color: var(--color-accent);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px var(--grid-color-strong);
}

.comment-form .textarea {
  resize: vertical;
  min-height: 120px;
}

/* 提交按钮 */
.comment-form .submit {
  padding: 0.7rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-surface);
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.comment-form .submit:hover {
  background: var(--color-accent-hover);
}

.comment-form .submit:active {
  transform: scale(0.98);
}

.comment-user-info {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding: 0.8rem 1rem;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
}

.comments-closed {
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
  padding: 1.5rem 0;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
}
/* Comment pagination */
.comments-area .page-navigator {
  margin-top: 1.5rem;
}

/* --- Responsive --- */
@media (max-width: 1100px) {
  .toc-sidebar {
    display: none;
  }
}

@keyframes nav-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav.open {
    animation: none;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 52px;
  }

  body {
    font-size: 15px;
  }

  .main-content {
    padding: 1.5rem 1rem;
  }

  .header-inner {
    padding: 0 1rem;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: 0.25rem;
    padding: 0.375rem 0 0.5rem;
    gap: 0.125rem;
    border-top: 1px solid var(--color-border-light);
    background: var(--color-bg);
    border-bottom-left-radius: var(--radius);
    border-bottom-right-radius: var(--radius);
  }

  .site-nav.open {
    display: flex;
    box-shadow: 0 10px 18px rgba(0, 0, 0, 0.10);
    animation: nav-drop 0.18s ease;
  }

  .site-nav .nav-link {
    padding: 0.7rem 0.85rem;
    font-size: 0.95rem;
    color: var(--color-text);
    border-radius: var(--radius);
    transition: background-color 0.15s, color 0.15s;
  }

  .site-nav .nav-link:hover,
  .site-nav .nav-link:active {
    background-color: rgba(218, 119, 86, 0.1);
    color: var(--color-accent);
  }

  .site-nav .theme-toggle {
    margin: 0.125rem 0 0;
    padding: 0.7rem 0.85rem;
    gap: 0.6rem;
    align-self: stretch;
    justify-content: flex-start;
    border-radius: var(--radius);
    color: var(--color-text-secondary);
  }

  .site-nav .theme-toggle:hover {
    background-color: rgba(218, 119, 86, 0.1);
    color: var(--color-accent);
  }

  .post-title {
    font-size: 1.5rem;
  }

  .post {
    padding: 1.5rem 1.25rem;
  }

  .post-card {
    padding: 1.25rem;
  }

  .post-card-title {
    font-size: 1.15rem;
  }

  .post-content {
    font-size: 1rem;
  }

  .post-nav {
    flex-direction: column;
  }

  .post-nav-prev,
  .post-nav-next {
    max-width: 100%;
  }

  .post-nav a {
    max-width: 100%;
  }

  .comment-content {
    margin-left: 0;
  }
}