.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
}

.main { flex: 1; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0 1.5rem;
  height: 3.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  z-index: 20;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.01em;
  font-family: var(--mono);
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  flex: 1;
  justify-content: center;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.nav-link:hover { color: var(--text); background: var(--surface); }

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

.nav-icon-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: color 0.15s, border-color 0.15s;
}

.nav-icon-link:hover { color: var(--text); border-color: var(--border-2); }

.nav-icon-link svg { width: 15px; height: 15px; flex-shrink: 0; }

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
}

.nav-burger-line {
  width: 16px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-burger[aria-expanded="true"] .nav-burger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] .nav-burger-line:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] .nav-burger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile-backdrop {
  position: fixed;
  inset: 3.5rem 0 0 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 15;
}

.nav-mobile-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 1.25rem 1.25rem;
  z-index: 20;
  animation: nav-panel-in 0.18s ease-out;
}

.nav-mobile-link {
  color: var(--text);
  text-decoration: none;
  font-size: 1.05rem;
  padding: 0.85rem 0.25rem;
  border-bottom: 1px solid var(--border);
}

.nav-mobile-social {
  display: flex;
  gap: 0.6rem;
  padding: 1rem 0.25rem 0.25rem;
}

.nav-mobile-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: color 0.15s, border-color 0.15s;
}

.nav-mobile-icon:hover { color: var(--text); border-color: var(--border-2); }

.nav-mobile-icon svg { width: 18px; height: 18px; }

.nav-mobile-docs {
  width: 100%;
  margin-top: 0.75rem;
}

.nav-mobile-docs svg { width: 18px; height: 18px; }

@keyframes nav-panel-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-icon-link { display: none; }
  .nav-burger { display: flex; }
}

@media (max-width: 480px) {
  .nav { padding: 0 1rem; }
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
  transition: border-color 0.15s;
}

.theme-toggle:hover { border-color: var(--border-2); }

.theme-toggle svg { width: 16px; height: 16px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s, border-color 0.15s, color 0.15s;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent-btn);
  color: #ffffff;
  box-shadow: 0 0 0 0 var(--accent-glow);
}

.btn-primary:hover { box-shadow: 0 0 24px var(--accent-glow); }

.btn-ghost {
  background: transparent;
  border-color: var(--border-2);
  color: var(--text);
}

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.copy-btn {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.copy-btn:hover { color: var(--accent); border-color: var(--accent); }

.code-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.code-block-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.code-block-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.code-block-dot:nth-child(1) { background: #ff5f57; }
.code-block-dot:nth-child(2) { background: #febc2e; }
.code-block-dot:nth-child(3) { background: #28c840; }

.code-block-filename {
  margin-left: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
}

.code-block-pre {
  padding: 1.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}

.code-block-pre::-webkit-scrollbar { height: 6px; }
.code-block-pre::-webkit-scrollbar-track { background: transparent; }
.code-block-pre::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
.code-block-pre::-webkit-scrollbar-thumb:hover { background: var(--hint); }

.code-block-pre code {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 0.85rem;
  line-height: 1.6;
  white-space: pre;
}

/* Token colors for HighlightGoHTML's spans. tok-str and tok-text share a
   color: string literals and JSX text children are the same kind of "plain
   content" to a reader, unlike code structure. */
.tok-kw { color: var(--accent); }
.tok-str, .tok-text { color: var(--accent-2); }
.tok-com { color: var(--hint); font-style: italic; }
.tok-fn { color: var(--tok-fn); font-weight: 600; }
.tok-type { color: var(--tok-type); }
.tok-signal { color: var(--tok-signal); font-weight: 600; }
.tok-call { color: var(--tok-call); }
.tok-tag { color: var(--tok-tag); }
.tok-prop { color: var(--tok-prop); }

.hero {
  position: relative;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 5.5rem 1.5rem 4rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 3rem;
}

.hero-copy,
.hero-visual {
  /* Grid items default to min-width:auto (their content's min-content).
     Without this, unshrinkable content (e.g. the nowrap install command)
     blows out the whole grid track past the viewport. */
  min-width: 0;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero-sub {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 0.85rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.install-row {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.35rem 0.35rem 0.9rem;
}

.install-cmd {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 0.85rem;
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

.install-cmd::before {
  content: "> ";
  color: var(--accent);
}

.install-cmd::-webkit-scrollbar { display: none; }

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-sub { margin-inline: auto; }
  .hero-actions, .install-row { margin-inline: auto; }
  .hero-actions { justify-content: center; }
}

@media (max-width: 480px) {
  .hero { padding: 3.5rem 1rem 2.5rem; }
  .hero-title { font-size: 2.1rem; }
}

.vane-icon {
  position: relative;
  width: clamp(140px, 20vw, 220px);
  height: clamp(140px, 20vw, 220px);
  transition: transform 0.15s ease-out;
  color: var(--accent);
  filter: drop-shadow(0 0 30px var(--accent-soft));
}

.vane-icon-ring,
.vane-icon-spin {
  position: absolute;
  inset: 0;
}

.vane-icon-spin { animation: vane-spin 40s linear infinite; }

.vane-icon-ring svg,
.vane-icon-spin svg { width: 100%; height: 100%; display: block; }

@keyframes vane-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.vane-icon--lost { opacity: 0.75; }

.vane-icon--lost .vane-icon-spin { animation: vane-hunt 3.5s ease-in-out infinite; }

@keyframes vane-hunt {
  0%   { transform: rotate(0deg); }
  20%  { transform: rotate(100deg); }
  40%  { transform: rotate(-60deg); }
  60%  { transform: rotate(140deg); }
  80%  { transform: rotate(-30deg); }
  100% { transform: rotate(0deg); }
}

.feature-tabs { max-width: 1000px; margin: 0 auto; }

.feature-tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.feature-tab {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 1.1rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

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

.feature-tab--active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.feature-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.feature-panel-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
  min-width: 0;
}

.feature-panel-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-panel-desc {
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.95rem;
}

.feature-panel-code { position: sticky; top: 5.5rem; min-width: 0; }

.demo-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.demo-label {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--hint);
}

.input {
  width: 100%;
  max-width: 280px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.55rem 0.8rem;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
}

.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--hint); }

.greeting {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
}

@media (max-width: 860px) {
  .feature-panel { grid-template-columns: 1fr; }
  .feature-panel-code { position: static; overflow: auto; }
}

/** signals demo visual */

.demo-visual {
  display: flex;
  align-items: center;
  gap: 0;
  width: 100%;
  justify-content: flex-start;
}

.demo-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-2);
  background: var(--surface-2);
  min-width: 120px;
}

.demo-node-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
}

.demo-node-value {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
}

.demo-node-value--live { color: var(--accent); }

.demo-quote-card {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 6.5rem;
  justify-content: center;
}

.demo-quote {
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--text);
}

.demo-quote-attribution {
  align-self: flex-end;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--hint);
}

.spinner {
  width: 24px;
  height: 24px;
  align-self: center;
  border: 3px solid var(--border-2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spinner-rotate 0.7s linear infinite;
}

@keyframes spinner-rotate {
  to { transform: rotate(360deg); }
}

.demo-wire {
  height: 2px;
  width: 64px;
  background: var(--border-2);
  position: relative;
  flex-shrink: 0;
}

.demo-wire::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease-out;
}

.demo-wire--pulse::before {
  transform: scaleX(1);
  box-shadow: 0 0 12px var(--accent-glow);
}

@media (max-width: 480px) {
  .demo-visual { flex-direction: column; gap: 0.5rem; }
  .demo-wire { width: 2px; height: 32px; }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
  transition: border-color 0.15s, transform 0.15s;
}

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

.feature-mark {
  display: block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--hint);
  margin-bottom: 0.75rem;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-desc {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

@media (max-width: 860px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
}

.proof-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 720px;
  margin: 0 auto 2rem;
  align-items: start;
}

.proof-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.proof-col-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--hint);
  margin-bottom: 0.5rem;
}

.proof-col--vane .proof-col-label { color: var(--accent); }

.proof-step {
  width: 100%;
  text-align: center;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-2);
  background: var(--surface);
  font-size: 0.85rem;
  font-family: var(--mono);
}

.proof-col--vane .proof-step {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.proof-step--extra { color: var(--muted); border-color: var(--border); }

.proof-arrow {
  color: var(--hint);
  font-size: 0.8rem;
}

.proof-arrow--accent { color: var(--accent); font-family: var(--mono); font-size: 0.7rem; }

.proof-caption {
  text-align: center;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .proof-columns { grid-template-columns: 1fr; gap: 2.5rem; }
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.doc-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

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

.doc-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.doc-card-desc {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

@media (max-width: 860px) {
  .docs-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .docs-grid { grid-template-columns: 1fr; }
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.example-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

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

.example-card-desc {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.example-card-name {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

@media (max-width: 860px) {
  .examples-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .examples-grid { grid-template-columns: 1fr; }
}

.cta-section {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
  text-align: center;
}

.cta-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.cta-sub {
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.cta-buttons {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-license {
  display: block;
  margin-top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--hint);
}

.footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 3rem 1.5rem 1.5rem;
}

.footer-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
}

.footer-brand-name {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
}

.footer-tagline {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.5rem;
  max-width: 260px;
  line-height: 1.6;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--hint);
  margin-bottom: 0.3rem;
}

.footer-col a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.footer-bottom {
  max-width: 1080px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--accent);
  font-size: 0.8rem;
  font-family: var(--mono);
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 1.75rem; }
}

/** reading progress bar, sticks right below the site nav */

.docs-progress-track {
  position: sticky;
  top: 3.5rem;
  z-index: 19;
  height: 3px;
  width: 100%;
  background: var(--border);
}

.docs-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  transition: width 0.1s linear;
}

.docs-shell {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

.docs-sidebar {
  width: 220px;
  flex-shrink: 0;
  position: sticky;
  top: 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}

.docs-sidebar::-webkit-scrollbar { width: 6px; }
.docs-sidebar::-webkit-scrollbar-track { background: transparent; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
.docs-sidebar::-webkit-scrollbar-thumb:hover { background: var(--hint); }

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

.docs-nav-group-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
  margin-bottom: 0.4rem;
}

.docs-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.docs-nav-link {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  border-left: 2px solid transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.docs-nav-link:hover { color: var(--text); background: var(--surface); }

.docs-nav-link--active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}

.docs-content-area { flex: 1; min-width: 0; }

.docs-sidebar-toggle {
  display: none;
}

@media (max-width: 860px) {
  .docs-shell { flex-direction: column; gap: 1.25rem; align-items: stretch; }

  .docs-sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.7rem 1rem;
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
  }

  .docs-sidebar-toggle-icon {
    display: flex;
    color: var(--muted);
    transition: transform 0.15s;
  }

  .docs-sidebar-toggle-icon svg {
    width: 16px;
    height: 16px;
  }

  .docs-sidebar-toggle--open .docs-sidebar-toggle-icon {
    transform: rotate(180deg);
  }

  .docs-sidebar {
    position: static;
    width: 100%;
    max-height: none;
    flex-direction: column;
    gap: 1.25rem;
    padding: 1rem 0 0.25rem;
    border-top: 1px solid var(--border);
    margin-top: 0.25rem;
  }

  .docs-sidebar--closed {
    display: none;
  }
}

@media (max-width: 480px) {
  .docs-shell { padding: 1.5rem 1rem 3rem; }
}

/** floating back-to-top button */

.docs-backtotop {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 15;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: 1px solid var(--border-2);
  background: var(--surface);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s, border-color 0.15s;
}

.docs-backtotop--visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.docs-backtotop:hover { border-color: var(--accent); }

.docs-backtotop-icon {
  display: flex;
  color: var(--text);
  transition: transform 0.3s ease;
}

.docs-backtotop-icon svg {
  width: 18px;
  height: 18px;
}

.docs-backtotop-icon--spin {
  transform: rotate(360deg);
}

@media (max-width: 480px) {
  .docs-backtotop {
    right: 1rem;
    bottom: 1rem;
  }
}

/** search: sidebar trigger + Ctrl/Cmd+K modal */

.docs-search-trigger {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.5rem 0.65rem;
  margin-bottom: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.docs-search-trigger:hover {
  color: var(--text);
  border-color: var(--border-2);
}

.docs-search-trigger-icon {
  display: flex;
  flex-shrink: 0;
}

.docs-search-trigger-icon svg {
  width: 15px;
  height: 15px;
}

.docs-search-trigger-label {
  flex: 1;
  text-align: left;
}

.docs-search-kbd {
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--border-2);
  border-radius: 4px;
  color: var(--hint);
}

.docs-search-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 1rem 1rem;
  background: rgba(0, 0, 0, 0.5);
}

.docs-search-dialog {
  width: 100%;
  max-width: 560px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.docs-search-input-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}

.docs-search-input-icon {
  display: flex;
  flex-shrink: 0;
  color: var(--hint);
}

.docs-search-input-icon svg {
  width: 16px;
  height: 16px;
}

.docs-search-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 0.95rem;
}

.docs-search-input::placeholder {
  color: var(--hint);
}

.docs-search-close {
  flex-shrink: 0;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: 5px;
  padding: 0.2rem 0.45rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  cursor: pointer;
}

.docs-search-hint {
  padding: 1.25rem 1rem;
  color: var(--hint);
  font-size: 0.88rem;
}

.docs-search-results {
  list-style: none;
  overflow-y: auto;
  padding: 0.4rem;
}

.docs-search-result {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  width: 100%;
  padding: 0.55rem 0.6rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background 0.1s;
}

.docs-search-result:hover,
.docs-search-result:focus-visible {
  background: var(--accent-soft);
}

.docs-search-result-category {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--hint);
}

.docs-search-result-title {
  font-size: 0.9rem;
}

.docs-search-result-sub {
  font-size: 0.82rem;
  color: var(--muted);
}

.docs-search-result-sub::before {
  content: "› ";
}

/** guide pages: article + on-this-page TOC */

.docs-page {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  gap: 3rem;
  align-items: start;
}

.docs-toc {
  position: sticky;
  top: 5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding-left: 1.25rem;
  border-left: 1px solid var(--border);
}

.docs-toc-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
}

.docs-toc-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }

.docs-toc-link {
  display: block;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  line-height: 1.4;
  transition: color 0.15s;
}

.docs-toc-link:hover { color: var(--text); }

.docs-toc-link--active { color: var(--accent); font-weight: 600; }

.docs-toc-link:hover { color: var(--accent); }

/** article prose */

.docs-article { min-width: 0; }

.docs-header { margin-bottom: 2rem; }

.docs-eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.docs-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.85rem;
}

.docs-desc {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 640px;
}

.docs-h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 2.75rem 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 5rem;
}

.docs-h2:first-of-type { margin-top: 0; }

.docs-p {
  color: var(--muted);
  line-height: 1.75;
  font-size: 0.98rem;
  margin-bottom: 1.1rem;
}

.docs-p code, .docs-callout-body code { color: var(--accent); }

.docs-article .code-block { margin-bottom: 1.5rem; }

.docs-list {
  color: var(--muted);
  line-height: 1.75;
  font-size: 0.98rem;
  margin: 0 0 1.5rem 1.25rem;
}

.docs-list li { margin-bottom: 0.4rem; }

.docs-list code { color: var(--accent); }

/** compact numbered pipeline, e.g. the .vane -> app.wasm build flow */

.docs-pipeline {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-2);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.docs-pipeline-step {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text);
}

.docs-pipeline-step:last-child { border-bottom: none; }

.docs-pipeline-num {
  flex: 0 0 auto;
  width: 1.4rem;
  height: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-size: 0.72rem;
  font-weight: 700;
}

.docs-table-wrap {
  border: 1px solid var(--border-2);
  border-radius: 10px;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  background: var(--surface);
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}

.docs-table-wrap::-webkit-scrollbar { height: 6px; }
.docs-table-wrap::-webkit-scrollbar-track { background: transparent; }
.docs-table-wrap::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
.docs-table-wrap::-webkit-scrollbar-thumb:hover { background: var(--hint); }

.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.docs-table th, .docs-table td {
  text-align: left;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--border);
}

.docs-table thead th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
  font-weight: 600;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border-2);
}

.docs-table tbody tr:last-child td { border-bottom: none; }

.docs-table td { color: var(--muted); }

.docs-table td code { color: var(--accent); }

/** callouts, e.g. Angular's TIP / IMPORTANT boxes */

.docs-callout {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-radius: 10px;
  border: 1px solid var(--border-2);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 0.9rem 1.1rem;
  margin-bottom: 1.5rem;
}

.docs-callout-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.docs-callout-body {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.docs-callout--important {
  border-left-color: var(--tok-signal);
}

.docs-callout--important .docs-callout-label { color: var(--tok-signal); }

/** prev / next footer nav */

.docs-pagenav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.docs-pagenav-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

.docs-pagenav-card:hover { border-color: var(--accent); transform: translateY(-1px); }

.docs-pagenav-card--next { text-align: right; align-items: flex-end; grid-column: 2; }

.docs-pagenav-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
}

.docs-pagenav-title { color: var(--text); font-weight: 600; font-size: 0.95rem; }

/** overview page: scaffold command callout */

.docs-scaffold {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-top: 2px solid var(--accent);
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
}

.docs-scaffold-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.3rem; }

.docs-scaffold-desc { color: var(--muted); font-size: 0.9rem; }

.docs-scaffold-steps {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.docs-scaffold-step-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
  margin-bottom: 0.4rem;
}

.docs-scaffold-cmd-row { max-width: 100%; }

/** overview page: quickstart entry points */

.docs-quickstart-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}

.docs-quickstart-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-top: 2px solid var(--accent);
  border-radius: 12px;
  padding: 1.4rem 1.5rem;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

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

.docs-quickstart-step {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--accent);
}

.docs-quickstart-title { color: var(--text); font-size: 1.05rem; font-weight: 700; }

.docs-quickstart-desc { color: var(--muted); font-size: 0.85rem; line-height: 1.55; }

/** overview page: community blurb */

.docs-community { margin-bottom: 1rem; }

.docs-community-link { color: var(--accent); }

/** overview page: category sections of link cards */

.docs-overview-section { margin-bottom: 2.5rem; }

.docs-overview-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.docs-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.docs-card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

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

.docs-card-title { color: var(--text); font-size: 1rem; font-weight: 700; }

.docs-card-desc { color: var(--muted); font-size: 0.85rem; line-height: 1.5; }

.docs-card-cta {
  margin-top: 0.3rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
}

/** responsive */

@media (max-width: 1080px) {
  .docs-page { grid-template-columns: minmax(0, 1fr); }
  .docs-toc { display: none; }
}

@media (max-width: 860px) {
  .docs-card-grid { grid-template-columns: 1fr; }
  .docs-quickstart-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .docs-title { font-size: 1.75rem; }
  .docs-pagenav { grid-template-columns: 1fr; }
  .docs-pagenav-card--next { grid-column: 1; text-align: left; align-items: flex-start; }
}

.notfound {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 7rem 1.5rem;
  text-align: center;
}

.notfound-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.notfound-vane {
  width: clamp(100px, 14vw, 150px);
  height: clamp(100px, 14vw, 150px);
  margin-bottom: 1.5rem;
}

.notfound-vane .vane-icon { width: 100%; height: 100%; }

.notfound-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0.75rem 0 1rem;
}

.notfound-desc {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 2rem;
}

.notfound-desc code {
  color: var(--accent);
}

.notfound-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 480px) {
  .notfound { padding: 4.5rem 1.25rem; }
  .notfound-title { font-size: 1.6rem; }
}


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

html { scroll-behavior: smooth; overflow-x: hidden; }

:root {
  --bg: #05070d;
  --surface: #0d111c;
  --surface-2: #131a2b;
  --surface-3: #182035;
  --border: #1f2940;
  --border-2: #2a3654;

  --text: #e6ebf5;
  --muted: #8b96b3;
  --hint: #7b86a8;

  --accent: #00ADD8;
  --accent-btn: #007a99;
  --accent-2: #5eead4;
  --accent-soft: rgba(0, 173, 216, 0.14);
  --accent-glow: rgba(0, 173, 216, 0.55);

  /* code token colors, used by FeatureTabs' snippet highlighter */
  --tok-fn: #f5c451;
  --tok-type: #c792ea;
  --tok-signal: #ff9d5c;
  --tok-call: #7dd3fc;
  --tok-tag: #ff7ab6;
  --tok-prop: #7aa2f7;

  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --surface-3: #e4e8f2;
  --border: #dbe1ec;
  --border-2: #c6cee0;

  --text: #10131c;
  --muted: #4c5468;
  --hint: #5a6478;

  --accent: #0090b3;
  --accent-btn: #007a99;
  --accent-2: #0f9488;
  --accent-soft: rgba(0, 144, 179, 0.1);
  --accent-glow: rgba(0, 144, 179, 0.35);

  --tok-fn: #9a6600;
  --tok-type: #7c3aed;
  --tok-signal: #c2410c;
  --tok-call: #0369a1;
  --tok-tag: #be185d;
  --tok-prop: #1d4ed8;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

code {
  font-family: var(--mono);
  background: var(--surface-2);
  color: var(--accent);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.875em;
}

/** eyebrow / section header, reused by every page section */

.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.section-header {
  max-width: 640px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.section-sub {
  color: var(--muted);
  line-height: 1.7;
}

/** spinning border, draws attention to an action until it's taken.
    Reused by Hero, FeatureTabs, and CommunityCTA. */

@property --spin-angle {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}

.spin-border {
  display: inline-block;
  border-radius: 10px;
  padding: 2px;
  background: conic-gradient(from var(--spin-angle), transparent 0deg, var(--accent) 90deg, transparent 200deg);
  animation: spin-border-rotate 2.5s linear infinite;
}

/* On hover the ring yields to the button's own hover glow instead of
   spinning underneath it. Background goes transparent rather than the
   padding collapsing to 0, so the button doesn't jump on hover. */
.spin-border:hover {
  background: transparent;
  animation-play-state: paused;
}

@keyframes spin-border-rotate {
  to { --spin-angle: 360deg; }
}

@media (max-width: 480px) {
  .section { padding: 3.5rem 1rem; }
  .section-title { font-size: 1.6rem; }
}