:root,
[data-bs-theme="light"] {
  --citation-hero-bg: linear-gradient(135deg, rgba(246, 250, 254, 0.98), rgba(226, 237, 247, 0.96));
  --citation-card: #ffffff;
  --citation-soft: #eef5fb;
  --citation-soft-2: #f6f9fc;
  --citation-border: #d8e3ee;
  --citation-text: #172235;
  --citation-muted: #647895;
  --citation-accent: #2d6d9b;
  --citation-accent-2: #7a5c2e;
  --citation-code-bg: #101827;
  --citation-code-text: #edf5ff;
  --citation-shadow: 0 18px 42px rgba(24, 43, 65, 0.12);
}

[data-bs-theme="dark"] {
  --citation-hero-bg: linear-gradient(135deg, rgba(12, 20, 31, 0.98), rgba(27, 42, 60, 0.96));
  --citation-card: #192638;
  --citation-soft: #213249;
  --citation-soft-2: #142033;
  --citation-border: #31445f;
  --citation-text: #edf5ff;
  --citation-muted: #a9bbd0;
  --citation-accent: #8fc8ec;
  --citation-accent-2: #f0c95d;
  --citation-code-bg: #0b111d;
  --citation-code-text: #eef6ff;
  --citation-shadow: 0 18px 44px rgba(4, 8, 13, 0.36);
}

body.citation-page {
  background:
    linear-gradient(90deg, rgba(120, 140, 165, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(120, 140, 165, 0.08) 1px, transparent 1px),
    var(--paper-50);
  background-size: 28px 28px, 28px 28px, auto;
}

.citation-hero {
  min-height: auto;
  padding: 6.5rem 0 4.4rem;
  background: var(--citation-hero-bg);
  border-bottom: 1px solid var(--citation-border);
}

.citation-kicker {
  color: var(--citation-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.citation-title {
  max-width: 920px;
  font-size: clamp(2.15rem, 4vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.citation-subtitle {
  max-width: 820px;
  color: var(--citation-muted);
  font-size: 1.12rem;
  line-height: 1.68;
}

.citation-quick-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  max-width: 760px;
}

.citation-stat {
  padding: 1rem;
  background: var(--citation-card);
  border: 1px solid var(--citation-border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(20, 34, 52, 0.08);
}

.citation-stat strong {
  display: block;
  color: var(--citation-text);
  font-size: 1.55rem;
  line-height: 1;
}

.citation-stat span {
  color: var(--citation-muted);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.citation-shell {
  padding: 3rem 0 5rem;
}

.citation-toolbar {
  position: sticky;
  top: 86px;
  z-index: 10;
  padding: 1rem;
  margin-bottom: 2rem;
  background: color-mix(in srgb, var(--citation-card) 92%, transparent);
  border: 1px solid var(--citation-border);
  border-radius: 8px;
  box-shadow: var(--citation-shadow);
  backdrop-filter: blur(16px);
}

.citation-search {
  height: 48px;
  color: var(--citation-text);
  background: var(--citation-soft-2);
  border: 1px solid var(--citation-border);
  border-radius: 8px;
}

.citation-search:focus {
  color: var(--citation-text);
  background: var(--citation-card);
  border-color: var(--citation-accent);
  box-shadow: 0 0 0 0.2rem rgba(45, 109, 155, 0.16);
}

.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.category-pill {
  border: 1px solid var(--citation-border);
  border-radius: 999px;
  color: var(--citation-text);
  background: var(--citation-soft-2);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0.48rem 0.78rem;
}

.category-pill:hover,
.category-pill:focus,
.category-pill.active {
  color: #ffffff;
  background: var(--citation-accent);
  border-color: var(--citation-accent);
}

.citation-section {
  scroll-margin-top: 160px;
  margin-bottom: 2.4rem;
}

.citation-section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--citation-border);
}

.citation-section-title {
  margin-bottom: 0.2rem;
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
}

.citation-section-note {
  color: var(--citation-muted);
  margin-bottom: 0;
}

.citation-count {
  flex: 0 0 auto;
  color: var(--citation-accent-2);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.citation-grid {
  display: grid;
  gap: 1rem;
}

.citation-card {
  background: var(--citation-card);
  border: 1px solid var(--citation-border);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(21, 36, 54, 0.08);
  overflow: hidden;
}

.citation-card-main {
  padding: 1.15rem;
}

.citation-card-title {
  margin-bottom: 0.5rem;
  color: var(--citation-text);
  font-family: "Merriweather", Georgia, serif;
  font-size: 1.05rem;
  line-height: 1.45;
}

.citation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.7rem;
}

.citation-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  color: var(--citation-text);
  background: var(--citation-soft);
  border: 1px solid var(--citation-border);
  font-size: 0.82rem;
  font-weight: 700;
}

.citation-authors {
  color: var(--citation-muted);
  line-height: 1.55;
  margin-bottom: 0;
}

.citation-code-wrap {
  border-top: 1px solid var(--citation-border);
  background: var(--citation-code-bg);
}

.citation-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.citation-key {
  color: #b9cee4;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.copy-btn {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  color: #f6fbff;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 0.32rem 0.68rem;
}

.copy-btn:hover,
.copy-btn:focus {
  color: #0b111d;
  background: #ffffff;
  border-color: #ffffff;
}

.citation-code {
  margin: 0;
  padding: 1rem;
  color: var(--citation-code-text);
  font-size: 0.86rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.citation-empty {
  display: none;
  padding: 2rem;
  text-align: center;
  color: var(--citation-muted);
  background: var(--citation-card);
  border: 1px dashed var(--citation-border);
  border-radius: 8px;
}

.citation-empty.show {
  display: block;
}

@media (max-width: 991px) {
  .citation-toolbar {
    position: static;
  }
}

@media (max-width: 768px) {
  .citation-hero {
    padding: 5rem 0 3.2rem;
  }

  .citation-quick-stats {
    grid-template-columns: 1fr;
  }

  .citation-section-header {
    align-items: start;
    flex-direction: column;
  }
}