/* Fluxline — design system */
:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fb;
  --bg-ink: #0b1020;
  --ink: #12172a;
  --muted: #5b6478;
  --line: #e7e9f0;
  --brand: #4f46e5;
  --brand-2: #06b6d4;
  --brand-ink: #3730a3;
  --ok: #10b981;
  --warn: #f59e0b;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16,23,42,.04), 0 12px 32px rgba(16,23,42,.08);
  --maxw: 1120px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.02em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand .logo { width: 26px; height: 26px; }
.nav .links { display: flex; gap: 22px; margin-left: 8px; }
.nav .links a { color: var(--muted); font-weight: 500; font-size: 15px; }
.nav .links a:hover { color: var(--ink); text-decoration: none; }
.nav .spacer { flex: 1; }
.nav .cta { display: flex; gap: 10px; align-items: center; }

.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; padding: 10px 18px; border-radius: 10px; border: 1px solid transparent; cursor: pointer; transition: .15s; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 6px 18px rgba(79,70,229,.28); }
.btn-primary:hover { background: var(--brand-ink); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--bg-soft); }
.btn-lg { padding: 13px 24px; font-size: 16px; }

/* Hero */
.hero { position: relative; overflow: hidden; background: linear-gradient(180deg, #0b1020 0%, #131a33 100%); color: #eef1fb; padding: 84px 0 96px; }
.hero::after { content: ""; position: absolute; inset: 0; background:
  radial-gradient(60% 50% at 80% -10%, rgba(6,182,212,.25), transparent 60%),
  radial-gradient(50% 50% at 15% 10%, rgba(79,70,229,.35), transparent 60%);
  pointer-events: none; }
.hero .container { position: relative; z-index: 1; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: #a6b0d6; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); padding: 6px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.05; letter-spacing: -.03em; margin: 20px 0 16px; max-width: 760px; }
.hero p.lede { font-size: clamp(17px, 2vw, 20px); color: #c3cbe8; max-width: 620px; margin: 0 0 28px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .metrics { display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
.hero .metrics .m b { display: block; font-size: 28px; letter-spacing: -.02em; }
.hero .metrics .m span { color: #9aa4cc; font-size: 14px; }

/* Code card */
.codecard { margin-top: 44px; background: #0a0f1f; border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.codecard .bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid rgba(255,255,255,.08); }
.codecard .dot { width: 11px; height: 11px; border-radius: 50%; background: #38405f; }
.codecard .fname { margin-left: 8px; color: #8b95bd; font: 500 13px/1 var(--mono); }
.codecard pre { margin: 0; padding: 18px 20px; overflow-x: auto; }
.codecard code { font: 13px/1.7 var(--mono); color: #c9d3f5; white-space: pre; }
.tok-k { color: #7dd3fc; }
.tok-s { color: #86efac; }
.tok-c { color: #6b7392; }
.tok-f { color: #c4b5fd; }

/* Sections */
section.block { padding: 80px 0; }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -.02em; margin: 0 0 12px; }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }
.bg-soft { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: .18s; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card .ic { width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(79,70,229,.12), rgba(6,182,212,.12)); color: var(--brand); margin-bottom: 16px; }
.card h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

/* Logos */
.logos { display: flex; align-items: center; justify-content: center; gap: 44px; flex-wrap: wrap; opacity: .65; }
.logos span { font-weight: 700; font-size: 19px; letter-spacing: -.02em; color: #7a8299; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; counter-reset: s; }
.step { padding-left: 52px; position: relative; }
.step::before { counter-increment: s; content: counter(s); position: absolute; left: 0; top: 0; width: 36px; height: 36px; border-radius: 10px; background: var(--brand); color: #fff; display: grid; place-items: center; font-weight: 700; }
.step h4 { margin: 4px 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }

/* Pricing */
.plans { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; align-items: start; }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: var(--bg); }
.plan.pop { border-color: var(--brand); box-shadow: 0 12px 40px rgba(79,70,229,.16); position: relative; }
.plan.pop .tag { position: absolute; top: -12px; right: 20px; background: var(--brand); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.plan h3 { margin: 0 0 4px; font-size: 18px; }
.plan .price { font-size: 40px; font-weight: 800; letter-spacing: -.03em; margin: 10px 0 2px; }
.plan .price span { font-size: 15px; font-weight: 500; color: var(--muted); }
.plan ul { list-style: none; padding: 18px 0 0; margin: 18px 0 0; border-top: 1px solid var(--line); }
.plan li { padding: 7px 0 7px 26px; position: relative; font-size: 15px; color: #3b4256; }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 800; }

/* CTA band */
.cta-band { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; border-radius: 20px; padding: 56px; text-align: center; }
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); margin: 0 0 10px; letter-spacing: -.02em; }
.cta-band p { margin: 0 0 24px; color: rgba(255,255,255,.9); font-size: 17px; }
.cta-band .btn-primary { background: #fff; color: var(--brand-ink); box-shadow: none; }
.cta-band .btn-primary:hover { background: #eef1fb; }

/* Footer */
.site-footer { background: var(--bg-ink); color: #aab3d4; padding: 56px 0 32px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; }
.site-footer h5 { color: #eef1fb; font-size: 14px; margin: 0 0 14px; letter-spacing: .02em; }
.site-footer a { color: #aab3d4; display: block; padding: 5px 0; font-size: 14px; }
.site-footer a:hover { color: #fff; text-decoration: none; }
.site-footer .brand { color: #fff; margin-bottom: 12px; }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 40px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; color: #7f89ad; flex-wrap: wrap; gap: 10px; }

/* Docs */
.doc-wrap { display: grid; grid-template-columns: 240px 1fr; gap: 48px; padding: 48px 0 80px; }
.doc-nav { position: sticky; top: 84px; align-self: start; }
.doc-nav a { display: block; padding: 6px 0; color: var(--muted); font-size: 14px; }
.doc-nav a:hover { color: var(--ink); text-decoration: none; }
.doc-nav .grp { font-weight: 700; color: var(--ink); margin: 18px 0 6px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
.doc-body h1 { letter-spacing: -.02em; }
.doc-body h2 { margin-top: 40px; letter-spacing: -.01em; padding-top: 12px; }
.doc-body pre { background: #0a0f1f; color: #c9d3f5; border-radius: 12px; padding: 16px 18px; overflow-x: auto; font: 13px/1.7 var(--mono); }
.doc-body code { font-family: var(--mono); font-size: .92em; background: var(--bg-soft); padding: 2px 6px; border-radius: 6px; }
.doc-body pre code { background: none; padding: 0; }
.method { display: inline-block; font: 700 12px/1 var(--mono); padding: 5px 8px; border-radius: 6px; color: #fff; }
.method.get { background: var(--ok); }
.method.post { background: var(--brand); }
.pill { display:inline-block; font-size:12px; font-weight:600; color:var(--brand-ink); background:rgba(79,70,229,.1); padding:3px 9px; border-radius:999px; }

/* Page hero (subpages) */
.page-hero { padding: 64px 0 24px; }
.page-hero h1 { font-size: clamp(30px,4vw,44px); letter-spacing: -.02em; margin: 0 0 10px; }
.page-hero p { color: var(--muted); font-size: 18px; margin: 0; max-width: 620px; }

@media (max-width: 900px) {
  .grid-3, .steps, .plans { grid-template-columns: 1fr; }
  .grid-2, .foot-grid { grid-template-columns: 1fr 1fr; }
  .doc-wrap { grid-template-columns: 1fr; }
  .doc-nav { position: static; }
  .nav .links { display: none; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 22px; }
}