@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=Syne:wght@500;700;800&family=Literata:opsz,wght@7..72,400;7..72,600&display=swap");

:root {
  --bg: #121418;
  --bg-2: #1a1e26;
  --bg-3: #242a34;
  --ink: #ece7dc;
  --mute: #9b968c;
  --line: rgba(236, 231, 220, 0.12);
  --copper: #d4723a;
  --copper-hot: #f0a060;
  --iron: #7d8694;
  --code: #0c0e12;
  --ok: #6fbf8a;
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Literata", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(212, 114, 58, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(125, 134, 148, 0.14), transparent 50%),
    linear-gradient(180deg, #161920 0%, var(--bg) 40%, #0e1014 100%);
  background-attachment: fixed;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

a {
  color: var(--copper-hot);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #ffc089;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

/* —— Nav —— */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(18, 20, 24, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand img {
  width: 2rem;
  height: 2rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a {
  color: var(--mute);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

/* —— Hero —— */
.hero {
  display: grid;
  align-content: center;
  padding: 5.5rem 0 4rem;
  position: relative;
}

.hero-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.4rem, 10vw, 6.5rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  margin: 0 0 1.25rem;
  animation: rise 0.9s var(--ease) both;
}

.hero-brand span {
  color: var(--copper);
}

.hero-lead {
  max-width: 34rem;
  margin: 0 0 2rem;
  color: var(--mute);
  font-size: 1.2rem;
  animation: rise 0.9s var(--ease) 0.16s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  animation: rise 0.9s var(--ease) 0.24s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.3rem;
  border-radius: 0.35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--copper);
  color: #1a120c;
}

.btn-primary:hover {
  background: var(--copper-hot);
  color: #1a120c;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  border-color: rgba(236, 231, 220, 0.35);
  color: var(--ink);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* —— Sections —— */
.section {
  padding: 4.5rem 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

.section > .lede,
.docs-main > .lede {
  color: var(--mute);
  max-width: 40rem;
  margin: 0 0 2rem;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 1.5rem;
}

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

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

@media (max-width: 820px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.feature {
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.feature h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
}

.feature p {
  margin: 0;
  color: var(--mute);
}

/* —— Code —— */
pre,
code {
  font-family: var(--font-mono);
}

code {
  font-size: 0.9em;
  color: var(--copper-hot);
}

pre {
  margin: 0;
  padding: 1.15rem 1.25rem;
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.55;
  color: #d7d2c7;
}

.example {
  margin: 1.75rem 0 2.25rem;
}

.example-caption {
  font-family: var(--font-display);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--iron);
  margin: 0 0 0.55rem;
}

.example-out {
  margin-top: 0.55rem;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--copper);
  background: rgba(212, 114, 58, 0.08);
  color: var(--ok);
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* —— Docs layout —— */
.docs-shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2.5rem;
  padding: 2.5rem 0 5rem;
  align-items: start;
}

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

.docs-side {
  position: sticky;
  top: 5rem;
  padding: 1rem 0;
}

.docs-side h2 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--iron);
  margin: 0 0 0.8rem;
}

.docs-side ol,
.docs-side ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.docs-side a {
  display: block;
  padding: 0.35rem 0;
  color: var(--mute);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.92rem;
}

.docs-side a:hover,
.docs-side a[aria-current="page"] {
  color: var(--ink);
}

.docs-main h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin: 0 0 1rem;
}

.docs-main h2 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  margin: 2.75rem 0 0.75rem;
  letter-spacing: -0.02em;
}

.docs-main h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 2rem 0 0.5rem;
}

.docs-main p,
.docs-main li {
  color: #d8d3c8;
}

.docs-main li + li {
  margin-top: 0.35rem;
}

.op {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 0.5rem;
  scroll-margin-top: 5rem;
}

.op-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1rem;
  margin-bottom: 0.5rem;
}

.op-name {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--copper-hot);
  margin: 0;
}

.op-kind {
  font-family: var(--font-display);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--iron);
  border: 1px solid var(--line);
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
}

.op-sig {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--mute);
  margin: 0 0 0.75rem;
}

.toc-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 2rem;
}

.toc-cats a {
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--mute);
  border: 1px solid var(--line);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
}

.toc-cats a:hover {
  color: var(--ink);
  border-color: rgba(236, 231, 220, 0.3);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  color: var(--mute);
  font-size: 0.92rem;
}

.footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.footer a {
  color: var(--mute);
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: none;
}