:root {
  color-scheme: light;
  --bg: #f5f1e8;
  --panel: #fffdfa;
  --ink: #1f2933;
  --muted: #6b7280;
  --line: #d6d3cc;
  --accent: #1d5f72;
  --accent-soft: #d7ecef;
  --status-unread: #d83a3a;
  --status-opened: #d9a514;
  --status-read: #2f8f4e;
  --status-changed: #2563eb;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(31, 41, 51, 0.08);
  font-family: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(29, 95, 114, 0.12), transparent 30%),
    linear-gradient(180deg, #f8f5ee 0%, var(--bg) 100%);
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(214, 211, 204, 0.9);
  background: rgba(255, 253, 250, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
}

.brand {
  font-size: 1.2rem;
  font-weight: 700;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.logout-button {
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  padding: 0;
}

.mode-switch {
  display: inline-flex;
  gap: 8px;
  padding: 4px;
  border: 1px solid rgba(214, 211, 204, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
}

.mode-chip {
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--muted);
}

.mode-chip.active {
  background: var(--accent);
  color: #fff;
}

.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px;
}

.hero {
  margin-bottom: 24px;
}

.hero h1,
.card h1,
.card h2,
.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid rgba(214, 211, 204, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.muted {
  color: var(--muted);
}

.error-banner {
  background: #fbe4e6;
  color: #8a1f2d;
  border: 1px solid #e7b6bc;
  border-radius: 12px;
  padding: 12px 14px;
}

.entry-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
}

.entry-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
  border-top: 1px solid rgba(214, 211, 204, 0.6);
}

.entry-list li:first-child {
  border-top: 0;
}

.entry-link {
  min-width: 0;
}

.entry-title,
.entry-subtitle {
  display: block;
}

.entry-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  overflow-wrap: anywhere;
}

.entry-subtitle {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.82rem;
}

.pill {
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.75rem;
  padding: 4px 10px;
}

.topic-card h2 {
  margin-bottom: 8px;
}

.topic-roots {
  font-size: 0.95rem;
  color: var(--muted);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
}

.section-heading h2 {
  margin: 0;
}

.facet-heading {
  margin: 18px 0 8px;
  font-size: 0.95rem;
  color: var(--muted);
  text-transform: uppercase;
}

.facet-row,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.facet-chip,
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(214, 211, 204, 0.9);
  border-radius: 999px;
  background: #fff;
  color: var(--accent);
  font-size: 0.84rem;
  padding: 6px 10px;
}

.facet-count {
  color: var(--muted);
  font-size: 0.76rem;
}

.heading-count {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 500;
}

.topic-document-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.topic-document-list li {
  padding: 12px 0;
  border-top: 1px solid rgba(214, 211, 204, 0.6);
}

.topic-document-list li:first-child {
  border-top: 0;
}

.topic-doc-main {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.document-page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin: 8px 0 12px;
}

.document-title-link,
.document-title-heading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.document-title-link span,
.document-title-heading span {
  overflow-wrap: anywhere;
}

.document-title-heading {
  margin: 0;
}

.read-status-dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--status-unread);
  box-shadow: 0 0 0 2px rgba(255, 253, 250, 0.95), 0 0 0 3px rgba(31, 41, 51, 0.14);
}

.read-status-unread {
  background: var(--status-unread);
}

.read-status-opened {
  background: var(--status-opened);
}

.read-status-read {
  background: var(--status-read);
}

.read-status-changed {
  background: var(--status-changed);
}

.read-status-action {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 6px 8px;
  border: 1px solid rgba(214, 211, 204, 0.9);
  border-radius: 999px;
  background: #fff;
}

.read-status-current {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.82rem;
}

.read-status-action form {
  margin: 0;
}

.read-status-action button {
  border: 0;
  border-radius: 999px;
  padding: 7px 10px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.read-status-action button:disabled {
  cursor: default;
  background: #e5e7eb;
  color: var(--muted);
}

.topic-doc-path {
  margin-top: 6px;
  font-size: 0.92rem;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.meta-inline {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f2f4f5;
  color: var(--muted);
  font-size: 0.78rem;
}

.document-meta-panel {
  display: grid;
  gap: 10px;
  margin: 12px 0 18px;
  padding: 12px 0;
  border-top: 1px solid rgba(214, 211, 204, 0.6);
  border-bottom: 1px solid rgba(214, 211, 204, 0.6);
}

.crumbs,
.doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 14px;
  color: var(--muted);
}

.stage-card h2,
.topic-hero h1 {
  margin-top: 0;
}

.search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  margin-top: 16px;
}

.search-form input {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
  font: inherit;
}

.search-form button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.search-snippet {
  margin: 8px 0 0;
  color: var(--ink);
  line-height: 1.5;
}

.connection-section {
  margin-top: 18px;
}

.connection-section h3 {
  margin: 0 0 8px;
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
  font-size: 1rem;
}

.markdown-body {
  line-height: 1.72;
  font-size: 1.05rem;
}

.markdown-body pre,
.markdown-body code {
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
}

.markdown-body pre {
  overflow: auto;
  padding: 14px;
  background: #f2f4f5;
  border-radius: 12px;
}

.mermaid-block {
  margin: 18px 0;
  overflow-x: auto;
  padding: 12px;
  border: 1px solid rgba(214, 211, 204, 0.9);
  border-radius: 12px;
  background: #fff;
}

.mermaid-block .mermaid {
  min-width: 720px;
  text-align: center;
}

.mermaid-block.mermaid-gantt-block .mermaid {
  min-width: 1800px;
}

.mermaid-block .mermaid svg {
  display: block;
  height: auto;
  max-width: none;
  margin: 0 auto;
}

.mermaid-block.mermaid-gantt-block .mermaid svg {
  overflow: visible;
}

.mermaid-block .mermaid-source {
  margin: 0;
}

.mermaid-block.mermaid-rendered .mermaid-source {
  display: none;
}

.mermaid-block.mermaid-failed {
  border-color: #e7b6bc;
  background: #fff8f8;
}

.markdown-body blockquote {
  margin: 0;
  padding-left: 16px;
  border-left: 4px solid var(--line);
  color: var(--muted);
}

.markdown-body table {
  border-collapse: collapse;
  width: 100%;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
}

.login-shell {
  min-height: calc(100vh - 120px);
  display: grid;
  place-items: center;
}

.login-card {
  width: min(100%, 420px);
}

.login-form {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.login-form label {
  display: grid;
  gap: 8px;
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
}

.login-form input {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
  font: inherit;
}

.login-form button {
  border: 0;
  border-radius: 999px;
  padding: 12px 16px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 640px) {
  .search-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .page-shell {
    padding: 16px;
  }

  .site-header {
    padding: 14px 16px;
  }

  .read-status-action button {
    min-width: 96px;
  }
}