:root {
  color-scheme: dark;
  --bg: #0e0e10;
  --panel: rgba(255, 255, 255, 0.05);
  --panel-strong: rgba(255, 255, 255, 0.08);
  --ink: #f1f5ff;
  --muted: rgba(241, 245, 255, 0.70);
  --line: rgba(241, 245, 255, 0.10);
  --accent: #22c55e;
  --accent-strong: #16a34a;
  --accent-soft: rgba(34, 197, 94, 0.18);
  --highlight: #facc15;
  --shadow: 0 40px 80px rgba(0, 0, 0, 0.35);
  --code-bg: rgba(255, 255, 255, 0.03);
  --code-text: #c9d1d9;
  --code-header-bg: rgba(255, 255, 255, 0.04);
  --code-header-border: rgba(255, 255, 255, 0.06);
  --btn-secondary-hover: rgba(255, 255, 255, 0.08);
  --radius-lg: 1rem;
  --radius-md: 1rem;
  --radius-sm: 0.6rem;

  --tok-keyword: #c586c0;
  --tok-string: #ce9178;
  --tok-number: #b5cea8;
  --tok-comment: #6a9955;
  --tok-constant: #4fc1ff;
  --tok-type: #4ec9b0;
  --tok-function: #dcdcaa;
  --tok-operator: #d4d4d4;

  font-size: clamp(15px, 1.1vw, 16px);
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f5f7;
  --panel: rgba(255, 255, 255, 0.75);
  --panel-strong: rgba(0, 0, 0, 0.04);
  --ink: #1a1a1f;
  --muted: rgba(26, 26, 31, 0.60);
  --line: rgba(0, 0, 0, 0.09);
  --accent: #16a34a;
  --accent-strong: #15803d;
  --accent-soft: rgba(22, 163, 74, 0.10);
  --highlight: #ca8a04;
  --shadow: 0 40px 80px rgba(0, 0, 0, 0.06);
  --code-bg: rgba(0, 0, 0, 0.03);
  --code-text: #24292e;
  --code-header-bg: rgba(0, 0, 0, 0.03);
  --code-header-border: rgba(0, 0, 0, 0.06);
  --btn-secondary-hover: rgba(0, 0, 0, 0.06);

  --tok-keyword: #8b3e8b;
  --tok-string: #a3512e;
  --tok-number: #1a7f37;
  --tok-comment: #57803a;
  --tok-constant: #0969da;
  --tok-type: #1a7f6d;
  --tok-function: #7a6e1e;
  --tok-operator: #383a42;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: "Google Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  padding: 2rem clamp(1.5rem, 4vw, 4rem) 2rem;
  position: relative;
  overflow-x: hidden;
}

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

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

.site-shell {
  max-width: 1100px;
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 3rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand:hover {
  color: var(--ink);
}

.brand-logo {
  height: 22px;
  width: auto;
  display: block;
}

.brand-logo-light {
  display: none;
}

[data-theme="light"] .brand-logo-dark {
  display: none;
}

[data-theme="light"] .brand-logo-light {
  display: block;
}

.brand-version {
  padding: 0.25rem 0.6rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--muted);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: 0.95rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
  transition: color 0.2s ease;
}

.nav-icon {
  flex-shrink: 0;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  background: none;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun,
:root:not([data-theme]) .theme-toggle .icon-sun {
  display: block;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.8fr);
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
}

.hero-copy {
  max-width: 640px;
}

.hero-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-copy,
.hero-panel {
  border: none;
  border-radius: 0;
  background: none;
  box-shadow: none;
}

.section-panel,
.detail-shell {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
}

.note-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0;
  border-radius: 0;
  background: none;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-copy h1,
.detail-hero h1 {
  margin: 0.5rem 0 1.25rem;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.hero-copy p,
.detail-hero p,
.section-header p,
.example-card p,
.note-card p,
.detail-body p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: inherit;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.button {
  background: var(--accent);
  color: #fff;
}

.button-secondary {
  border-color: var(--line);
  background: var(--panel);
  color: var(--ink);
}

.button:hover {
  background: var(--accent-strong);
  transform: translateY(-2px);
}

.button-secondary:hover {
  background: var(--btn-secondary-hover);
  border-color: var(--accent);
}

.run-button {
  width: 100%;
  padding: 1rem 1.6rem;
  font-size: 1rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  box-shadow: 0 8px 24px rgba(34, 197, 94, 0.25);
  letter-spacing: 0.02em;
}

.run-button:hover {
  background: linear-gradient(135deg, var(--accent-strong) 0%, var(--accent-strong) 100%);
  box-shadow: 0 12px 32px rgba(34, 197, 94, 0.35);
}

.run-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.version-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  background: var(--panel);
  border: 1px solid var(--line);
  text-align: center;
}

.version-label {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--muted);
  font-family: "Cascadia Mono", "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.version-number {
  display: block;
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
}

.launch-note {
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.section-panel {
  padding: 2rem;
  margin-bottom: 2rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
  margin-bottom: 1.5rem;
}

.section-header h2 {
  margin: 0.3rem 0 0.6rem;
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.example-card {
  display: grid;
  gap: 1rem;
  padding: 1.75rem;
  border-radius: var(--radius-md);
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color 0.2s ease;
}

.example-card:hover {
  border-color: var(--accent);
  color: var(--ink);
}

.pill-row,
.tag-row,
.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.stat-card,
.tag,
.meta-pill {
  border-radius: var(--radius-sm);
  background: var(--panel);
  border: 1px solid var(--line);
}

.stat-card {
  padding: 1rem;
}

.stat-card strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 1.9rem;
  line-height: 1;
}

.stat-card span {
  color: var(--muted);
}

.meta-pill,
.tag {
  padding: 0.4rem 0.75rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.example-card h3 {
  margin: 0;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}

.source-path,
.link-subtle {
  color: var(--muted);
  font-size: 0.9rem;
}

.catalog-copy {
  max-width: 720px;
}

.detail-shell {
  padding: 2rem;
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.detail-header h1 {
  margin: 0.3rem 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.detail-summary {
  margin: 0 0 0.75rem;
}

.runner-compact {
  flex-shrink: 0;
  padding-top: 1.5rem;
}

.runner-compact .run-button {
  width: auto;
  white-space: nowrap;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.6fr);
  gap: 1.5rem;
}

.code-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--code-bg);
  color: var(--code-text);
}

.code-header {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--code-header-border);
  background: var(--code-header-bg);
  font-size: 0.85rem;
}

.code-block,
.runner-output {
  margin: 0;
  padding: 1.25rem;
  overflow-x: auto;
  font-family: "Cascadia Mono", "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88rem;
  line-height: 1.7;
  white-space: pre-wrap;
}

.runner-panel {
  align-self: start;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--code-bg);
}

.runner-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--code-header-border);
  background: var(--code-header-bg);
  font-size: 0.85rem;
  font-weight: 600;
}

.expand-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  border: none;
  border-radius: 4px;
  background: none;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s ease;
}

.expand-toggle:hover {
  color: var(--ink);
}

.detail-grid.output-expanded .runner-panel {
  grid-column: 1 / -1;
  order: -1;
}

.detail-grid.output-expanded .runner-output {
  min-height: 300px;
}

.runner-output {
  min-height: 180px;
  background: var(--code-bg);
  color: var(--code-text);
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.note-card {
  padding: 1.5rem;
  align-self: start;
}

.note-card h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-top: 3rem;
  padding: 2rem 0 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.fade-in {
  animation: rise 420ms ease both;
}

.delay-1 {
  animation-delay: 80ms;
}

.delay-2 {
  animation-delay: 150ms;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .hero,
  .detail-grid,
  .card-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .detail-header {
    flex-direction: column;
  }

  .detail-grid .runner-panel {
    order: -1;
  }

  .site-header,
  .section-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  body {
    padding: 1.5rem 1.25rem 2rem;
  }

  .hero-copy,
  .hero-panel,
  .section-panel,
  .detail-shell,
  .detail-body,
  .note-card {
    padding: 1.25rem;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }
}

.philosophy {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(280px, 1.2fr) minmax(240px, 1fr);
  margin-bottom: 4rem;
}

.philosophy-card {
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.philosophy-card h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin-top: 0.3rem;
  font-weight: 700;
}

.philosophy-card p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.05rem;
}

.philosophy-blurb {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--panel);
  border: 1px solid var(--line);
}

.philosophy-blurb h3 {
  margin: 0 0 0.4rem;
  font-size: 1.3rem;
  font-weight: 700;
}

.philosophy-blurb > p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  line-height: 1.7;
}

.guardrail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.guardrail-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--muted);
  line-height: 1.5;
}

.guardrail-list li svg {
  flex-shrink: 0;
  margin-top: 0.1rem;
  stroke: var(--accent);
}

.guardrail-list li strong {
  display: block;
  color: var(--ink);
  font-weight: 600;
}

.guardrail-list li span {
  font-size: 0.92rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 960px) {
  .philosophy,
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  overflow: hidden;
}

.feature-card header {
  padding: 1.75rem 1.75rem 0;
}

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.feature-card header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.feature-card pre {
  margin: 1rem 0 0;
  padding: 1.25rem 1.75rem;
  overflow-x: auto;
  background: var(--code-bg);
  border-top: 1px solid var(--line);
  font-family: "Cascadia Mono", "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.65;
  white-space: pre;
  color: var(--code-text);
}

.catalog {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 2rem;
  min-height: 60vh;
}

.catalog-sidebar {
  position: sticky;
  top: 2rem;
  align-self: start;
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
}

.catalog-sidebar-header {
  margin-bottom: 1.5rem;
}

.catalog-sidebar-header h2 {
  margin: 0.3rem 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.catalog-sidebar-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.catalog-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.catalog-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

.catalog-nav-item:hover {
  background: var(--panel-strong);
  color: var(--ink);
}

.catalog-nav-item.is-active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.catalog-nav-count {
  font-size: 0.78rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.catalog-nav-item.is-active .catalog-nav-count {
  color: var(--accent);
}

.catalog-toolbar {
  margin-bottom: 1rem;
  min-height: 2rem;
}

.catalog-active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: background 0.15s ease;
}

.filter-pill:hover {
  background: rgba(34, 197, 94, 0.25);
}

.filter-pill .filter-x {
  font-size: 0.7rem;
  opacity: 0.7;
}

.card-category {
  display: inline-block;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--panel-strong);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
  justify-self: start;
}

.example-card[hidden] {
  display: none;
}

@media (max-width: 960px) {
  .catalog {
    grid-template-columns: 1fr;
  }

  .catalog-sidebar {
    position: static;
    max-height: none;
  }
}

.tok-keyword { color: var(--tok-keyword); }
.tok-string { color: var(--tok-string); }
.tok-number { color: var(--tok-number); }
.tok-comment { color: var(--tok-comment); font-style: italic; }
.tok-constant { color: var(--tok-constant); }
.tok-type { color: var(--tok-type); }
.tok-function { color: var(--tok-function); }
.tok-operator { color: var(--tok-operator); }