:root {
  /* Surface & Canvas Layer Tokens (Dark Default) */
  --bg-dark: #090d16;
  --bg-canvas: #090d16;
  --bg-card: #0f172a;
  --bg-card-hover: #162032;
  --bg-surface-1: #0f172a;
  --bg-surface-2: #162032;
  --bg-surface-hover: #1e293b;
  --bg-glass: rgba(15, 23, 42, 0.75);
  --bg-glass-nav: rgba(9, 13, 22, 0.85);

  /* Vibrant Accent & Gradient Tokens */
  --accent-cyan: #38bdf8;
  --accent-cyan-light: #7dd3fc;
  --accent-blue: #3b82f6;
  --accent-blue-deep: #2563eb;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #c084fc;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --accent-glow-strong: rgba(56, 189, 248, 0.35);

  --gradient-primary: linear-gradient(135deg, #38bdf8 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-accent: linear-gradient(135deg, #38bdf8 0%, #3b82f6 100%);
  --gradient-text: linear-gradient(135deg, #38bdf8 0%, #60a5fa 50%, #c084fc 100%);
  --gradient-card-shine: linear-gradient(180deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0) 100%);

  /* 4-Vector Scar Tokens (Section 303 Specification) */
  --scar-wound: #ef4444;
  --scar-wound-bg: rgba(239, 68, 68, 0.12);
  --scar-trap: #f59e0b;
  --scar-trap-bg: rgba(245, 158, 11, 0.12);
  --scar-breaker: #10b981;
  --scar-breaker-bg: rgba(16, 185, 129, 0.12);
  --scar-reflex: #38bdf8;
  --scar-reflex-bg: rgba(56, 189, 248, 0.12);

  /* High-Contrast Typography Tokens */
  --text-main: #f8fafc;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-code: #e2e8f0;

  /* Translucent Border & Lighting Tokens */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(56, 189, 248, 0.45);
  --border-card-hover: rgba(56, 189, 248, 0.35);

  /* Shadows & Elevation Tokens */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
  --shadow-card-hover: 0 16px 36px -4px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(56, 189, 248, 0.35), 0 0 24px rgba(56, 189, 248, 0.12);
  --shadow-button-primary: 0 4px 14px 0 rgba(56, 189, 248, 0.35);
  --shadow-button-hover: 0 8px 24px 0 rgba(56, 189, 248, 0.45);

  /* Motion & Transition Tokens */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

:root[data-theme="light"] {
  /* Surface & Canvas Layer Tokens (Light Mode) */
  --bg-dark: #f8fafc;
  --bg-canvas: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-surface-1: #ffffff;
  --bg-surface-2: #f8fafc;
  --bg-surface-hover: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-nav: rgba(241, 245, 249, 0.85);

  /* Vibrant Accent & Gradient Tokens */
  --accent-cyan: #0284c7;
  --accent-cyan-light: #0369a1;
  --accent-blue: #2563eb;
  --accent-blue-deep: #1d4ed8;
  --accent-purple: #7c3aed;
  --accent-purple-light: #6d28d9;
  --accent-glow: rgba(2, 132, 199, 0.12);
  --accent-glow-strong: rgba(2, 132, 199, 0.25);

  --gradient-primary: linear-gradient(135deg, #0284c7 0%, #2563eb 50%, #7c3aed 100%);
  --gradient-accent: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  --gradient-text: linear-gradient(135deg, #0284c7 0%, #1d4ed8 50%, #6d28d9 100%);
  --gradient-card-shine: linear-gradient(180deg, rgba(0, 0, 0, 0.02) 0%, rgba(0, 0, 0, 0) 100%);

  /* 4-Vector Scar Tokens (Light Mode) */
  --scar-wound: #dc2626;
  --scar-wound-bg: rgba(220, 38, 38, 0.1);
  --scar-trap: #d97706;
  --scar-trap-bg: rgba(217, 119, 6, 0.1);
  --scar-breaker: #059669;
  --scar-breaker-bg: rgba(5, 150, 105, 0.1);
  --scar-reflex: #0284c7;
  --scar-reflex-bg: rgba(2, 132, 199, 0.1);

  /* High-Contrast Typography Tokens */
  --text-main: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-code: #1e293b;

  /* Translucent Border & Lighting Tokens */
  --border-color: rgba(0, 0, 0, 0.08);
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-glass: rgba(0, 0, 0, 0.12);
  --border-focus: rgba(2, 132, 199, 0.45);
  --border-card-hover: rgba(2, 132, 199, 0.35);

  /* Shadows & Elevation Tokens */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.05);
  --shadow-card-hover: 0 16px 36px -4px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(2, 132, 199, 0.35);
  --shadow-button-primary: 0 4px 14px 0 rgba(2, 132, 199, 0.25);
  --shadow-button-hover: 0 8px 24px 0 rgba(2, 132, 199, 0.35);
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-canvas);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow), transparent 70%),
    radial-gradient(ellipse 60% 40% at 100% 40%, rgba(139, 92, 246, 0.04), transparent 60%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

.main-content {
  flex: 1;
  padding: 32px 0 64px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

code, pre, .font-mono {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, monospace;
}

/* ==========================================================================
   Navbar & Navigation Styles
   ========================================================================== */
.navbar {
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-glass-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 14px 0;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  transition: opacity var(--transition-fast);
}

.brand:hover {
  opacity: 0.9;
}

.brand-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-desktop {
  display: flex;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: 6px 4px;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a.nav-active {
  color: var(--accent-cyan);
  font-weight: 600;
  border-bottom: 2px solid var(--accent-cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-theme-toggle:hover {
  border-color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.08);
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 14px;
  background: var(--bg-surface-1);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  transition: all var(--transition-fast);
}

.btn-github:hover {
  border-color: var(--accent-cyan);
  background: var(--bg-surface-2);
}

.btn-hamburger {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--text-primary);
}

/* ==========================================================================
   Mobile Drawer & Backdrop
   ========================================================================== */
.nav-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 9, 20, 0.7);
  backdrop-filter: blur(4px);
  z-index: 10001;
}

.nav-drawer-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100vh;
  height: 100dvh;
  background: var(--bg-card);
  border-left: 1px solid var(--border-subtle);
  z-index: 10002;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: -16px 0 48px rgba(0, 0, 0, 0.6);
  overflow-y: auto;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.drawer-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.drawer-close {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
}

.drawer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drawer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  padding: 8px 4px;
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.drawer-links a:hover,
.drawer-links a.nav-active {
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.08);
}

/* ==========================================================================
   Page Placeholder & Router Styles
   ========================================================================== */
.page-placeholder {
  padding: 48px 0;
  text-align: center;
}

.placeholder-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.placeholder-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.placeholder-description {
  max-width: 640px;
  margin: 0 auto 32px;
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.6;
}

/* ==========================================================================
   Footer Styles
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0 32px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  background: var(--bg-dark);
  margin-top: auto;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .nav-desktop {
    display: none;
  }

  .btn-hamburger {
    display: block;
  }
}

/* ==========================================================================
   Telemetry Showcase Grid
   ========================================================================== */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.telemetry-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.telemetry-card:hover {
  border-color: var(--border-card-hover);
  transform: translateY(-2px);
}

.telemetry-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.telemetry-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1.1;
}

.telemetry-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.telemetry-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   Registry Explorer & Filter Controls
   ========================================================================== */
.registry-view {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-bottom: 64px;
}

.registry-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.registry-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.registry-title {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

.registry-stats-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}

.registry-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin: 0;
  max-width: 800px;
  line-height: 1.6;
}

.registry-controls {
  background: var(--bg-surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--shadow-card);
}

.search-bar-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.btn-reset-filters {
  padding: 10px 18px;
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-reset-filters:hover {
  background: var(--bg-surface-2);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.filter-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  padding: 6px 12px;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--bg-surface-2);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.filter-chip:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--border-glass);
}

.filter-chip.active {
  background: var(--accent-blue);
  color: #ffffff;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-glow);
}

.chip-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  opacity: 0.8;
}

.results-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0 4px;
}

.active-filter-indicator {
  font-weight: 600;
  color: var(--accent-cyan);
}

/* ==========================================================================
   4-Vector Scar Cards
   ========================================================================== */
.scars-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.scar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  scroll-margin-top: 100px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.scar-card:hover {
  border-color: var(--border-card-hover);
  box-shadow: var(--shadow-card-hover);
}

.scar-card.target-anchor {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px var(--accent-cyan), var(--shadow-card-hover);
}

.scar-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.scar-id-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.scar-id-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 4px 10px;
  border-radius: 6px;
}

.scar-category-tag {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-surface-2);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.scar-visibility-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(139, 92, 246, 0.12);
  color: var(--accent-purple-light);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.scar-phase-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--scar-breaker);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.scar-card-actions {
  display: flex;
  gap: 8px;
}

.btn-permalink {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-permalink:hover {
  background: var(--bg-surface-hover);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.btn-permalink.copied {
  background: rgba(16, 185, 129, 0.15);
  color: var(--scar-breaker);
  border-color: var(--scar-breaker);
}

.scar-card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.4;
}

.scar-vectors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.vector-block {
  border-radius: 10px;
  padding: 16px 20px;
  border-left: 4px solid;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vector-wound {
  background: var(--scar-wound-bg);
  border-color: var(--scar-wound);
}

.vector-trap {
  background: var(--scar-trap-bg);
  border-color: var(--scar-trap);
}

.vector-breaker {
  background: var(--scar-breaker-bg);
  border-color: var(--scar-breaker);
}

.vector-reflex {
  background: var(--scar-reflex-bg);
  border-color: var(--scar-reflex);
}

.vector-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.vector-wound .vector-header {
  color: var(--scar-wound);
}

.vector-trap .vector-header {
  color: var(--scar-trap);
}

.vector-breaker .vector-header {
  color: var(--scar-breaker);
}

.vector-reflex .vector-header {
  color: var(--scar-reflex);
}

.vector-body {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.6;
}

.vector-body p {
  margin: 0 0 8px 0;
}

.vector-body p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Markdown Prose & Reader Layout
   ========================================================================== */
.reader-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  padding-bottom: 64px;
}

@media (max-width: 900px) {
  .reader-layout {
    grid-template-columns: 1fr;
  }
}

.reader-sidebar {
  position: sticky;
  top: 90px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  background: var(--bg-surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.reader-sidebar-title {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.reader-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.reader-nav-item {
  display: block;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: 1.4;
}

.reader-nav-item:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.reader-nav-item.active {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  font-weight: 700;
  border-left: 3px solid var(--accent-cyan);
}

.reader-main {
  min-width: 0;
}

.prose {
  color: var(--text-main);
  line-height: 1.75;
  font-size: 1.05rem;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  color: var(--text-primary);
  font-weight: 800;
  line-height: 1.3;
  margin-top: 1.8em;
  margin-bottom: 0.6em;
}

.prose h1 {
  font-size: 2.25rem;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.prose h2 {
  font-size: 1.65rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.3em;
}

.prose h3 {
  font-size: 1.3rem;
}

.prose p {
  margin-bottom: 1.25em;
}

.prose blockquote {
  border-left: 4px solid var(--accent-blue);
  background: var(--bg-surface-1);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 1.5em 0;
  color: var(--text-secondary);
  font-style: italic;
}

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

.prose code {
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  font-size: 0.9em;
  background: var(--bg-surface-2);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

.prose pre {
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 1.5em 0;
}

.prose pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text-code);
  font-size: 0.92rem;
  line-height: 1.5;
}

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

.prose li {
  margin-bottom: 0.4em;
}

.prose a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.prose hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 2.5em 0;
}

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

.prose th, .prose td {
  border: 1px solid var(--border-subtle);
  padding: 10px 14px;
  text-align: left;
}

.prose th {
  background: var(--bg-surface-1);
  font-weight: 700;
}

.prose tr:nth-child(even) {
  background: var(--bg-surface-2);
}

/* ==========================================================================
   Article Index Cards
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

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

.article-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.article-series-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
}

.article-time-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-card-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.35;
}

.article-card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
  flex: 1;
}

.article-read-more {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   Starter Kit & Submit Tabs
   ========================================================================== */
.tabs-nav {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
  overflow-x: auto;
}

.tab-btn {
  padding: 10px 18px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.code-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  padding: 10px 16px;
}

.code-box-filename {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.code-box-actions {
  display: flex;
  gap: 8px;
}

.btn-code-action {
  padding: 4px 10px;
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-code-action:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

.code-pre-block {
  margin: 0;
  border-radius: 0 0 8px 8px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-dark);
  padding: 16px 20px;
  overflow-x: auto;
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-code);
  line-height: 1.5;
}

/* Submit Form */
.submit-form-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 32px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-input, .form-textarea {
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-cyan);
}