:root {
  /* Colors - Light Theme Default (from screenshot) */
  --color-bg: #fdfbf7;
  --color-surface: #ffffff;
  --color-surface-2: #f2efe9;
  --color-border: rgba(0, 0, 0, 0.12);
  --color-border-hover: rgba(0, 0, 0, 0.25);
  
  --color-text: #1a1a1a;
  --color-text-muted: #5a5a5a;
  --color-text-faint: #808080;
  
  --color-accent: #c79a4a;
  --color-accent-dark: #9f7937;
  
  /* Hero Banner specific colors (always dark) */
  --hero-bg: #111315;
  --hero-text: #f3f0ea;
  --hero-text-muted: #b4ada1;
  --hero-pill-bg: rgba(255, 255, 255, 0.05);
  --hero-pill-border: rgba(255, 255, 255, 0.1);
  --hero-pill-hover: rgba(255, 255, 255, 0.1);
  
  /* SEEDS Accents */
  --color-seeds-similarity: #4f8a8b;
  --color-seeds-expedience: #d9833b;
  --color-seeds-experience: #4b739e;
  --color-seeds-distance: #856a8f;
  --color-seeds-safety: #b84c4c;
  
  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', 'Inter', system-ui, sans-serif;
  
  /* Radii & Shadows */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.1);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-panel: 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-dark {
  --color-bg: #111315;
  --color-surface: #171a1d;
  --color-surface-2: #1f2428;
  --color-border: rgba(255, 255, 255, 0.10);
  --color-border-hover: rgba(255, 255, 255, 0.20);
  
  --color-text: #f3f0ea;
  --color-text-muted: #b4ada1;
  --color-text-faint: #7e7a73;
  
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  overflow-x: hidden;
  padding-bottom: 64px;
}

button { background: none; border: none; color: inherit; font: inherit; cursor: pointer; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 400; line-height: 1.1; }

/* Hero Banner — matches page theme, not always dark */
.hero-banner {
  background-color: var(--color-bg);
  color: var(--color-text);
  padding: 1.5rem 1.5rem 2rem 1.5rem;
}
.hero-container {
  max-width: 1200px;
  margin: 0 auto;
}
.intro {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}
.intro-text { min-width: 0; }
.intro-text .eyebrow {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.intro-text h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 0.4rem 0;
  letter-spacing: -0.01em;
}
.intro-text p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
  max-width: 60ch;
}
.intro-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: none;
}
.count-badge {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  border: 1px solid var(--color-border);
  font-variant-numeric: tabular-nums;
}
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.theme-toggle svg { width: 14px; height: 14px; }

/* Tucked Controls */
.hero-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.filter-pill {
  display: flex;
  align-items: center;
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 8px 16px;
  color: var(--color-text);
  transition: all var(--transition-fast);
}
.filter-pill:hover, .filter-pill:focus-within {
  background-color: var(--color-surface-2);
  border-color: rgba(255, 255, 255, 0.2);
}
.search-pill {
  flex: 1;
  min-width: 250px;
  max-width: 400px;
  gap: 8px;
}
.search-icon { width: 16px; height: 16px; color: var(--color-text-muted); }
.search-pill input {
  background: transparent;
  border: none;
  color: var(--color-text);
  width: 100%;
  outline: none;
  font-family: inherit;
  font-size: 0.95rem;
}
.dropdown-pill { gap: 8px; }
.dropdown-pill label {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.dropdown-pill select {
  background: transparent;
  border: none;
  color: var(--color-text);
  outline: none;
  font-family: inherit;
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  appearance: none;
  padding-right: 20px;
  background-image: url('data:image/svg+xml;utf8,<svg width="10" height="6" viewBox="0 0 10 6" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M1 1L5 5L9 1" stroke="%23808080" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></svg>');
  background-repeat: no-repeat;
  background-position: right center;
}
.dropdown-pill select option {
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* Main Content Grid */
.main-content {
  max-width: 1200px;
  margin: 1.25rem auto 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 10;
}
.bias-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  align-items: start;
}

/* Bias Card */
.bias-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  min-height: 160px;
  height: 100%;
}
.bias-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border-hover);
}
.bias-card.selected {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.card-header h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-text);
  line-height: 1.3;
}
.card-what {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.card-badges {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
}
.badge {
  font-size: 0.75rem;
  padding: 4px 9px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge-seeds { color: #fff; }
.seeds-similarity { background-color: var(--color-seeds-similarity); }
.seeds-expedience { background-color: var(--color-seeds-expedience); }
.seeds-experience { background-color: var(--color-seeds-experience); }
.seeds-distance   { background-color: var(--color-seeds-distance); }
.seeds-safety     { background-color: var(--color-seeds-safety); }
.badge-codex {
  border: 1px solid var(--color-border-hover);
  color: var(--color-text-muted);
}
.badge-domain {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-style: italic;
  font-weight: 400;
}
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Inline Expansion Panel */
.inline-expansion-panel {
  grid-column: 1 / -1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin: 8px 0;
  animation: slideDown var(--transition-panel) forwards;
  display: flex;
  flex-direction: column;
}

@keyframes slideDown {
  from { opacity: 0; transform: scaleY(0.95); transform-origin: top; }
  to { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

.expansion-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background-color: var(--color-surface-2);
}
.expansion-title-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.expansion-title-group h2 {
  font-size: 2.5rem;
  color: var(--color-text);
  margin: 0;
}
.close-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}
.close-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}
.close-btn svg { width: 20px; height: 20px; }

.expansion-body {
  padding: 32px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
}
@media (max-width: 768px) {
  .expansion-body { grid-template-columns: 1fr; gap: 32px; }
  .hero-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .search-pill { min-width: 100%; }
}

.detail-section { margin-bottom: 32px; }
.detail-section:last-child { margin-bottom: 0; }
.detail-section h4 {
  font-family: var(--font-body);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-faint);
  margin-bottom: 12px;
}
.detail-section p {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}
.detail-list {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  padding-left: 20px;
}
.detail-list li {
  margin-bottom: 8px;
}
.detail-list li:last-child {
  margin-bottom: 0;
}

.detail-tags {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}
.tag-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tag-label {
  font-size: 0.8125rem;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.domain-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.domain-chip {
  font-size: 0.8125rem;
  padding: 4px 12px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  color: var(--color-text-muted);
}

.related-biases-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.related-bias-btn {
  text-align: left;
  padding: 12px 16px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}
.related-bias-btn:hover {
  background: var(--color-surface);
  border-color: var(--color-accent);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
  text-align: center;
}
.empty-state[hidden] { display: none !important; }
.empty-state svg { width: 48px; height: 48px; color: var(--color-text-muted); margin-bottom: 16px; }
.empty-state h3 { font-size: 1.5rem; margin-bottom: 8px; }
.empty-state p { color: var(--color-text-muted); margin-bottom: 24px; }
.btn-primary {
  padding: 10px 20px;
  background-color: var(--color-accent);
  color: #fff;
  border-radius: 24px;
  font-weight: 500;
  transition: opacity var(--transition-fast);
}
.btn-primary:hover { opacity: 0.9; }

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 8px;
  z-index: 1000;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }