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

:root {
  --bg: #090909;
  --surface: rgba(255, 255, 255, 0.028);
  --surface-strong: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.12);
  --text: #ededef;
  --dim: #8f9097;
  --muted: #636368;
  --white: #f5f5f7;
  --glow: rgba(110, 140, 255, 0.12);
  --glow-soft: rgba(92, 120, 214, 0.08);
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.45);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "Roboto Mono", "SFMono-Regular", "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  --w: 920px;
  --narrow: 760px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background:
    radial-gradient(circle at top, rgba(92, 120, 214, 0.07), transparent 32%),
    linear-gradient(180deg, #090909 0%, #080808 100%);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; }

.ambient {
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: 0;
  filter: blur(30px);
  opacity: 0.6;
  animation: floatGlow 18s ease-in-out infinite;
}

.ambient-a {
  top: 8rem;
  left: -6rem;
  width: 16rem;
  height: 16rem;
  background: radial-gradient(circle, var(--glow) 0%, transparent 72%);
}

.ambient-b {
  right: -5rem;
  top: 22rem;
  width: 18rem;
  height: 18rem;
  background: radial-gradient(circle, var(--glow-soft) 0%, transparent 72%);
  animation-delay: -6s;
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.75rem;
  border-bottom: 1px solid var(--border);
  background: rgba(9, 9, 9, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  z-index: 100;
}

.logo {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--dim);
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text);
}

main {
  position: relative;
  z-index: 1;
  padding-top: 56px;
}

section {
  max-width: var(--w);
  margin: 0 auto;
  padding: 0 1.75rem;
}

.doc-hero {
  padding-top: 8rem;
  padding-bottom: 3.5rem;
}

.doc-eyebrow {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.015);
  color: var(--dim);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1 {
  max-width: 14ch;
  margin: 1rem 0 0.8rem;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.055em;
  color: var(--white);
}

.doc-subhead {
  max-width: 38rem;
  color: var(--dim);
  font-size: 1rem;
}

.docs-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.35rem;
}

.docs-tab {
  padding: 0.42rem 0.78rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.016);
  color: var(--dim);
  font-size: 0.8rem;
  text-decoration: none;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.docs-tab:hover,
.docs-tab.is-active {
  color: var(--text);
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.024);
}

.doc-section {
  border-top: 1px solid var(--border);
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

.doc-section h2 {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--white);
}

.doc-section p {
  max-width: 42rem;
  margin-top: 0.5rem;
  color: var(--dim);
  font-size: 0.95rem;
}

.doc-grid,
.card-grid,
.mini-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.35rem;
}

.doc-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.doc-card,
.code-panel,
.note,
.tool-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0.016)),
    rgba(255, 255, 255, 0.014);
}

.doc-card,
.tool-card,
.note {
  padding: 1.15rem 1.2rem;
}

.doc-card h2,
.tool-card h2,
.note h2,
.note h3 {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.doc-card p,
.tool-card p,
.note p {
  margin-top: 0.35rem;
  font-size: 0.88rem;
}

.doc-card a {
  display: inline-block;
  margin-top: 0.8rem;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.doc-card a:hover {
  border-color: rgba(255, 255, 255, 0.28);
}

.code-panel {
  overflow: hidden;
}

.panel-head {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.018);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.code-panel pre {
  padding: 1rem;
  overflow-x: auto;
}

.code-panel code,
.tool-card code,
.inline-code {
  font-family: var(--mono);
  font-size: 0.84rem;
  color: var(--text);
}

.inline-code {
  display: inline-block;
}

.list {
  margin-top: 1rem;
  color: var(--dim);
}

.list li + li {
  margin-top: 0.45rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.35rem;
}

.tool-card {
  text-align: center;
  padding: 0.95rem;
}

.tool-card code {
  font-size: 0.8rem;
}

.inline-link {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.inline-link:hover {
  border-color: rgba(255, 255, 255, 0.28);
}

footer {
  max-width: var(--w);
  margin: 0 auto;
  padding: 1.5rem 1.75rem 2.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8125rem;
  color: #4c4e57;
}

footer a {
  color: inherit;
  text-decoration: none;
}

footer a:hover {
  color: var(--dim);
}

@keyframes floatGlow {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -12px, 0); }
}

@media (max-width: 900px) {
  .doc-grid,
  .card-grid,
  .mini-grid,
  .tool-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  nav,
  section,
  footer {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  nav {
    height: 54px;
  }

  .nav-actions {
    gap: 0.85rem;
  }

  .doc-hero {
    padding-top: 7rem;
    padding-bottom: 3rem;
  }

  h1 {
    max-width: 12ch;
    font-size: clamp(2.1rem, 11vw, 3rem);
  }

  .doc-subhead {
    font-size: 0.96rem;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
  }
}