/* G8 — theg8.ai. Single stylesheet, no build step. */

@font-face {
  font-family: "Geist";
  src: url("/assets/fonts/geist.woff2") format("woff2");
  font-weight: 300 800;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("/assets/fonts/geist-mono.woff2") format("woff2");
  font-weight: 400 500;
  font-display: swap;
}

:root {
  --bg: #0b1324;
  --bg-2: #0f192e;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-hi: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.09);
  --line-hi: rgba(255, 255, 255, 0.16);
  --ink: #e9eef7;
  --muted: #8d98ad;
  --dim: #5c667a;
  --accent: #8ab8ff;
  --accent-2: #5f8dff;
  --accent-soft: rgba(138, 184, 255, 0.12);
  --brand: #5276b8;        /* Octa-G mark on dark */
  --brand-soft: #9fb6de;

  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --wrap: 1200px;
  --gutter: 20px;
  --radius: 18px;

  color-scheme: dark;
}

/* ---------- base ---------- */

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: var(--bg); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { margin: 0; line-height: 1.05; letter-spacing: -0.03em; font-weight: 600; }
p { margin: 0; }
a { color: inherit; }
img, svg, canvas { display: block; max-width: 100%; }
::selection { background: var(--accent); color: var(--bg); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.skip {
  position: absolute; left: -999px; top: 8px; z-index: 50;
  background: var(--accent); color: var(--bg); padding: 8px 14px; border-radius: 8px;
}
.skip:focus { left: 8px; }

.mono { font-family: var(--mono); font-size: 13px; letter-spacing: 0.04em; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px var(--mono); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: ""; width: 7px; height: 7px; border-radius: 2px;
  background: var(--accent); box-shadow: 0 0 12px var(--accent);
}

.grad {
  background: linear-gradient(100deg, #ffffff 10%, var(--accent) 55%, var(--accent-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- logo ---------- */

.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.logo svg { width: 32px; height: 32px; }
.logo .mk { fill: var(--brand); }
.logo > span { font-weight: 800; font-size: 22px; letter-spacing: -0.05em; }
.logo .tld { font-weight: 500; color: var(--brand-soft); }

/* ---------- buttons ---------- */

.btn {
  position: relative;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 12px;
  font: 500 15px var(--sans); text-decoration: none; white-space: nowrap;
  border: 1px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--accent); color: #0b1324;
  box-shadow: 0 0 0 1px rgba(138, 184, 255, .4), 0 10px 40px -10px rgba(138, 184, 255, .7);
}
.btn-primary:hover { box-shadow: 0 0 0 1px rgba(138, 184, 255, .6), 0 14px 50px -8px rgba(138, 184, 255, .9); }
.btn-ghost { background: var(--surface); border-color: var(--line-hi); color: var(--ink); backdrop-filter: blur(8px); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, .35); }
.btn-sm { padding: 9px 16px; font-size: 14px; border-radius: 10px; }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- header ---------- */

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 20;
  transition: background-color .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(11, 19, 36, .72);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom-color: var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.site-header nav { display: flex; align-items: center; gap: 30px; }
.site-header nav a:not(.btn) { text-decoration: none; font-size: 14px; color: var(--muted); transition: color .2s; }
.site-header nav a:not(.btn):hover { color: var(--ink); }

@media (max-width: 820px) {
  .site-header nav a:not(.btn) { display: none; }
}

/* ---------- hero ---------- */

.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center;
  padding: 120px 0 96px;
}
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(45% 55% at 60% 52%, rgba(138, 184, 255, .09), transparent 70%),
    radial-gradient(40% 50% at 95% 10%, rgba(95, 141, 255, .08), transparent 70%),
    var(--bg);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(11, 19, 36, .8) 32%, rgba(11, 19, 36, 0) 60%),
    linear-gradient(0deg, var(--bg) 0%, rgba(11, 19, 36, 0) 22%);
}
.hero-copy { max-width: 780px; }
.hero h1 { margin-top: 26px; font-size: clamp(40px, 6vw, 76px); font-weight: 600; letter-spacing: -0.05em; line-height: .98; }
.hero .lead { margin-top: 26px; font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 33em; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.hero-facts { display: flex; flex-wrap: wrap; gap: 10px 28px; margin: 44px 0 0; padding: 0; list-style: none; }
.hero-facts li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); }
.hero-facts svg { width: 16px; height: 16px; color: var(--accent); }


@media (max-width: 820px) {
  .hero { align-items: flex-end; padding-top: 140px; }
  .hero::after { background: linear-gradient(0deg, var(--bg) 0%, rgba(11, 19, 36, .9) 40%, rgba(11, 19, 36, 0) 68%); }
}

/* ---------- marquee ---------- */

.marquee {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; width: max-content; animation: marquee 38s linear infinite; }
.marquee ul { display: flex; margin: 0; padding: 0; list-style: none; }
.marquee li {
  display: flex; align-items: center; gap: 18px; padding: 22px 18px;
  font: 500 14px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); white-space: nowrap;
}
.marquee li::after { content: ""; width: 6px; height: 6px; transform: rotate(45deg); background: var(--accent); opacity: .7; margin-left: 18px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */

.section { position: relative; padding: 128px 0; }
.section-head { max-width: 780px; margin-bottom: 64px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { margin-top: 20px; font-size: clamp(34px, 4.8vw, 58px); letter-spacing: -0.045em; }
.section-head p:not(.eyebrow) { margin-top: 20px; color: var(--muted); font-size: 19px; }

@media (max-width: 760px) {
  .section { padding: 88px 0; }
  .section-head { margin-bottom: 44px; }
}

.glow-top::before {
  content: ""; position: absolute; left: 50%; top: 0; transform: translateX(-50%);
  width: min(900px, 90vw); height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: .5;
}

/* ---------- thesis / split ---------- */

.split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 72px; align-items: center; }
.split .section-head { margin-bottom: 0; }
@media (max-width: 960px) { .split { grid-template-columns: 1fr; gap: 48px; } }

.points { list-style: none; padding: 0; margin: 32px 0 0; display: grid; gap: 14px; }
.points li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink); }
.points svg { width: 20px; height: 20px; color: var(--accent); flex: none; margin-top: 3px; }

.panel {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  padding: 22px;
  box-shadow: 0 30px 80px -40px rgba(138, 184, 255, .22);
}
.panel figcaption { margin-top: 10px; color: var(--dim); }

/* routing diagram */
.dia .box { fill: #132038; stroke: var(--line-hi); stroke-width: 1.2; }
.dia .box.on { stroke: var(--accent); }
.dia .label { fill: var(--ink); font: 500 15px var(--sans); }
.dia .sub { fill: var(--muted); font: 400 11px var(--mono); }
.dia .wire { fill: none; stroke: rgba(255,255,255,.14); stroke-width: 1.5; }
.dia .wire-dash { stroke-dasharray: 4 6; }
.dia .live { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 2 16; animation: flow 1s linear infinite; filter: drop-shadow(0 0 4px var(--accent)); }
.dia .core { fill: #132038; stroke: var(--accent); stroke-width: 2; filter: drop-shadow(0 0 14px rgba(138, 184, 255,.55)); }
.dia .core-text { fill: var(--ink); font: 700 26px var(--sans); letter-spacing: -0.04em; }
.dia .tag { fill: var(--accent); font: 500 11px var(--mono); }
@keyframes flow { to { stroke-dashoffset: -36; } }

/* ---------- cards ---------- */

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 960px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid, .grid-2 { grid-template-columns: 1fr; } }

.card {
  --mx: 50%; --my: 0%;
  position: relative; overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color .3s ease, transform .3s ease;
}
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s ease;
  background: radial-gradient(420px circle at var(--mx) var(--my), rgba(138, 184, 255, .11), transparent 60%);
}
.card:hover { border-color: var(--line-hi); }
.card:hover::before { opacity: 1; }
.card > * { position: relative; }
.card h3 { font-size: 21px; letter-spacing: -0.02em; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 16px; }
.card .icon {
  width: 44px; height: 44px; margin-bottom: 26px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid rgba(138, 184, 255, .25); border-radius: 12px;
}
.card .icon svg { width: 22px; height: 22px; }
.card .num { color: var(--dim); position: absolute; top: 30px; right: 30px; }

/* ---------- steps ---------- */

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding: 28px 0 0; border-top: 1px solid var(--line-hi); }
.steps li::before {
  content: "0" counter(step); position: absolute; top: -1px; left: 0;
  padding-top: 14px; border-top: 1px solid var(--accent);
  font: 500 12px var(--mono); color: var(--accent); width: 40px;
}
.steps h3 { margin-top: 22px; font-size: 22px; }
.steps p { margin-top: 10px; color: var(--muted); font-size: 16px; }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ---------- pillars ---------- */

.pillars .card { padding: 36px 32px; }
.pillars h3 { font-size: 26px; }
.pillars .points { margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--line); gap: 12px; }
.pillars .points li { font-size: 15px; }

/* ---------- developers ---------- */

.code {
  margin: 0; overflow-x: auto;
  font: 400 14px/1.75 var(--mono); color: var(--ink);
}
.code .k { color: var(--accent-2); }
.code .s { color: var(--accent); }
.code .n { color: #ffcf7a; }
.code .c { color: var(--dim); }
.code-bar { display: flex; align-items: center; gap: 7px; margin-bottom: 18px; }
.code-bar i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.12); }
.code-bar span { margin-left: 10px; color: var(--dim); }

/* ---------- final CTA ---------- */

.cta {
  position: relative; overflow: hidden; isolation: isolate;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 96px 24px;
  background: radial-gradient(60% 90% at 50% 100%, rgba(138, 184, 255, .22), transparent 70%), var(--bg-2);
}
.cta::before {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(70% 80% at 50% 100%, #000, transparent);
          mask-image: radial-gradient(70% 80% at 50% 100%, #000, transparent);
}
.cta h2 { font-size: clamp(36px, 5.4vw, 64px); letter-spacing: -0.05em; max-width: 14em; margin: 20px auto 0; }
.cta p:not(.eyebrow) { margin: 22px auto 0; max-width: 34em; color: var(--muted); font-size: 19px; }
.cta .actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 36px; }
.cta .email { display: block; margin-top: 28px; color: var(--muted); text-decoration: none; }
.cta .email:hover { color: var(--accent); }

/* ---------- footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding: 48px 0 56px; font-size: 14px; color: var(--muted); }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 24px 48px; justify-content: space-between; align-items: flex-start; }
.site-footer .note { max-width: 44em; margin-top: 16px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 28px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

/* ---------- prose (legal / 404) ---------- */

.prose { max-width: 740px; padding: 150px var(--gutter) 110px; margin: 0 auto; }
.prose h1 { margin-top: 20px; font-size: clamp(38px, 5.4vw, 60px); letter-spacing: -0.045em; }
.prose h2 { font-size: 22px; margin: 44px 0 12px; }
.prose p, .prose li { color: var(--muted); }
.prose p + p { margin-top: 12px; }
.prose ul { padding-left: 20px; }
.prose a:not(.btn) { color: var(--accent); }
.prose .date { display: block; margin-top: 16px; color: var(--dim); }

/* ---------- reveal on scroll (enabled only when JS runs) ---------- */

.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }
.js .reveal-d1 { transition-delay: .08s; }
.js .reveal-d2 { transition-delay: .16s; }
.js .reveal-d3 { transition-delay: .24s; }

/* ---------- motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}