/* ============================================================
   FabNet — fabnet.ai
   Clean, minimal, futuristic. Monochrome + one restrained accent.
   ============================================================ */

:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --ink: #0a0a0c;
  --ink-soft: #55555e;
  --ink-faint: #8b8b94;
  --line: rgba(10, 10, 12, 0.08);
  /* AFN palette: green #88d870 + blue #60a5fa. The dark cut keeps the
     same green hue readable as small text on light backgrounds. */
  --accent: #2f7d1e;
  --accent-bright: #88d870;
  --accent-blue: #60a5fa;
  --accent-ink: #0d2405;
  --accent-soft: rgba(136, 216, 112, 0.12);
  --dark-bg: #060609;
  --dark-ink: #f4f4f6;
  --dark-soft: #9a9aa6;
  --dark-line: rgba(244, 244, 246, 0.1);
  --radius: 18px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

::selection { background: var(--accent-bright); color: var(--accent-ink); }

em { font-family: var(--serif); font-style: italic; font-weight: 400; }

/* ---------------- Reveal on scroll ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  border-radius: 999px;
  padding: 10px 20px;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease),
    color 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  white-space: nowrap;
}
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-solid {
  background: var(--ink);
  color: #fff;
}
.btn-solid:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(10, 10, 12, 0.22); }
.btn-ghost {
  color: var(--ink);
  border: 1px solid var(--line);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn-gradient {
  background: linear-gradient(90deg, var(--accent-bright), var(--accent-blue));
  color: var(--accent-ink);
  font-weight: 600;
}
.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -6px rgba(96, 165, 250, 0.6);
}
.btn-inverse { background: #fff; color: var(--ink); }
.btn-inverse:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4); }
.btn-arrow { transition: transform 0.35s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ---------------- Nav ---------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease),
    backdrop-filter 0.4s var(--ease);
}
.nav.scrolled {
  background: rgba(250, 250, 250, 0.78);
  -webkit-backdrop-filter: saturate(1.8) blur(20px);
  backdrop-filter: saturate(1.8) blur(20px);
  box-shadow: 0 1px 0 var(--line);
}
.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.logo-mark { width: 26px; height: 26px; }
.nav-links {
  display: flex;
  gap: 30px;
}
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.3s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; gap: 10px; }
.nav-cta .btn { font-size: 14px; padding: 9px 18px; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  padding: 172px 0 96px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 90% 65% at 50% 0%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 90% 65% at 50% 0%, #000 30%, transparent 75%);
}
.hero-glow {
  position: absolute;
  top: -320px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 640px;
  background:
    radial-gradient(closest-side at 38% 50%, rgba(136, 216, 112, 0.16), transparent),
    radial-gradient(closest-side at 66% 45%, rgba(96, 165, 250, 0.13), transparent);
  filter: blur(20px);
}
.hero-inner { position: relative; text-align: center; }
.hero-eyebrow {
  display: inline-block;
  font-size: clamp(38px, 7vw, 66px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-transform: uppercase;
  /* Deeper green start than AFN's #88d870 so the gradient stays legible
     as text on the light background. */
  background: linear-gradient(90deg, #3a9427, var(--accent-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 50px;
}
.hero-title {
  font-size: clamp(38px, 7vw, 80px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.04;
  margin-bottom: 26px;
}
.hero-title em { letter-spacing: -0.02em; }
.hero-sub {
  max-width: 680px;
  margin: 0 auto 40px;
  font-size: 19px;
  color: var(--ink-soft);
}
.hero-sub strong { color: var(--ink); font-weight: 600; }
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------------- Hero chat demo ---------------- */
.hero-demo {
  margin-top: 84px;
  transition-delay: 0.15s;
}
.demo-window {
  max-width: 660px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 40px 90px -30px rgba(10, 10, 12, 0.25);
  overflow: hidden;
  text-align: left;
}
.demo-titlebar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.demo-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--line); }
.demo-title {
  margin-left: 8px;
  font-size: 13px;
  color: var(--ink-faint);
  font-weight: 500;
}
.demo-body { padding: 24px 22px 26px; display: grid; gap: 14px; }
.demo-msg { display: flex; }
.demo-user { justify-content: flex-end; }
.demo-bubble {
  max-width: 82%;
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 14.5px;
  line-height: 1.5;
}
.demo-user .demo-bubble {
  background: var(--ink);
  color: #fff;
  border-bottom-right-radius: 6px;
}
.demo-agent .demo-bubble {
  background: #f1f1f4;
  color: var(--ink);
  border-bottom-left-radius: 6px;
}
.demo-file {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  opacity: 0.75;
  margin-bottom: 8px;
}
.demo-quotes { display: grid; gap: 8px; padding: 2px 0; }
.demo-quote {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  font-size: 13.5px;
}
.dq-vendor { font-weight: 600; }
.dq-meta { color: var(--ink-faint); font-size: 12.5px; }
.dq-price { font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; }
.dq-eta { color: var(--accent); font-size: 12.5px; text-align: right; font-weight: 500; }
.demo-order { display: flex; justify-content: flex-start; padding-left: 2px; }
.demo-order-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--accent-bright);
  border: none;
  border-radius: 999px;
  padding: 11px 22px;
  cursor: default;
  box-shadow: 0 10px 26px -8px rgba(136, 216, 112, 0.65);
}

/* Demo choreography: elements appear in sequence once scrolled into view */
.demo-body > * ,
.demo-quotes .demo-quote {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.hero-demo.play .demo-body > * { opacity: 1; transform: none; }
.hero-demo.play .demo-quotes .demo-quote { opacity: 1; transform: none; }
.hero-demo.play .demo-body > :nth-child(1) { transition-delay: 0.2s; }
.hero-demo.play .demo-body > :nth-child(2) { transition-delay: 0.9s; }
.hero-demo.play .demo-quotes .demo-quote:nth-child(1) { transition-delay: 1.7s; }
.hero-demo.play .demo-quotes .demo-quote:nth-child(2) { transition-delay: 2.1s; }
.hero-demo.play .demo-quotes .demo-quote:nth-child(3) { transition-delay: 2.5s; }
.hero-demo.play .demo-body > :nth-child(4) { transition-delay: 3.2s; }
.hero-demo.play .demo-body > :nth-child(5) { transition-delay: 3.8s; }
@media (prefers-reduced-motion: reduce) {
  .demo-body > *, .demo-quotes .demo-quote { opacity: 1; transform: none; transition: none; }
}

/* ---------------- Stats ---------------- */
.stats { padding: 40px 0 96px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  border-top: 1px solid var(--line);
  padding-top: 48px;
}
.stat { text-align: left; }
.stat-num {
  display: block;
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat-seconds { font-family: var(--serif); font-style: italic; font-weight: 400; }
.stat-label { display: block; margin-top: 8px; font-size: 14px; color: var(--ink-soft); max-width: 220px; }

/* ---------------- Shared section styles ---------------- */
section { scroll-margin-top: 84px; }
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.eyebrow-dark { color: var(--accent-bright); }
.section-title {
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin-bottom: 28px;
}

/* ---------------- Problem ---------------- */
.problem { padding: 96px 0 120px; }
.problem-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 40px;
}
.problem-col h3 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.problem-col p { color: var(--ink-soft); font-size: 15.5px; }
.problem-col:nth-child(2) { transition-delay: 0.12s; }
.problem-col:nth-child(3) { transition-delay: 0.24s; }
.problem-col:nth-child(3) h3 { color: var(--accent); }

/* ---------------- How (dark) ---------------- */
.how {
  background: var(--dark-bg);
  color: var(--dark-ink);
  padding: 128px 0;
  position: relative;
  overflow: hidden;
}
.how::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--dark-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--dark-line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 100%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 100%, #000 20%, transparent 75%);
  opacity: 0.6;
  pointer-events: none;
}
.how .container { position: relative; }
.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.how-step {
  border: 1px solid var(--dark-line);
  border-radius: var(--radius);
  padding: 32px 28px;
  background: rgba(244, 244, 246, 0.03);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease), border-color 0.4s var(--ease);
}
.how-step:hover { border-color: rgba(136, 216, 112, 0.4); }
.how-step:nth-child(2) { transition-delay: 0.12s; }
.how-step:nth-child(3) { transition-delay: 0.24s; }
.how-num {
  display: inline-block;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  color: var(--accent-bright);
  margin-bottom: 20px;
}
.how-step h3 { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 12px; }
.how-step p { color: var(--dark-soft); font-size: 15px; }
.how-step em { color: var(--dark-ink); }
.how-note {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--dark-line);
  color: var(--dark-soft);
  font-size: 15px;
  max-width: 640px;
}

/* ---------------- Stack ---------------- */
.stack { padding: 128px 0; }
.stack-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.stack-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 34px 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--ink);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease),
    box-shadow 0.45s var(--ease), border-color 0.45s var(--ease);
}
.stack-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 60px -24px rgba(10, 10, 12, 0.18);
  border-color: rgba(136, 216, 112, 0.6);
}
.stack-card.reveal.in:hover { transform: translateY(-6px); }
.stack-card:nth-child(2) { transition-delay: 0.12s; }
.stack-card:nth-child(3) { transition-delay: 0.24s; }
.stack-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 10px;
}
.stack-card h3 { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.stack-card p { color: var(--ink-soft); font-size: 15px; flex: 1; }
.stack-link {
  font-weight: 600;
  font-size: 14.5px;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.stack-link span { transition: transform 0.35s var(--ease); }
.stack-card:hover .stack-link span { transform: translateX(4px); }

/* ---------------- Processes ---------------- */
.processes { padding: 32px 0 128px; }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 48px;
}
.process {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease), border-color 0.4s var(--ease);
}
.process:hover { border-color: rgba(136, 216, 112, 0.6); }
.process:nth-child(4n + 2) { transition-delay: 0.08s; }
.process:nth-child(4n + 3) { transition-delay: 0.16s; }
.process:nth-child(4n + 4) { transition-delay: 0.24s; }
.process-icon { color: var(--accent); font-size: 11px; display: block; margin-bottom: 14px; }
.process h3 { font-size: 16.5px; font-weight: 600; margin-bottom: 6px; letter-spacing: -0.01em; }
.process p { font-size: 13.5px; color: var(--ink-soft); }
.process-more { background: var(--accent-soft); border-color: rgba(47, 125, 30, 0.22); }
.process-more h3 { color: var(--accent); }

/* ---------------- Manufacturers ---------------- */
.manufacturers {
  padding: 128px 0;
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.manu-lead { font-size: 18px; color: var(--ink-soft); max-width: 620px; margin-bottom: 40px; }
.manu-paths {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 820px;
  margin-bottom: 44px;
}
.manu-path {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.manu-path:nth-child(2) { transition-delay: 0.12s; }
.manu-path h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; letter-spacing: -0.01em; }
.manu-path p { color: var(--ink-soft); font-size: 15px; }
.manufacturers .hero-actions { justify-content: flex-start; }

/* ---------------- Proof ---------------- */
.proof {
  background: var(--dark-bg);
  color: var(--dark-ink);
  padding: 140px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.proof::before {
  content: "";
  position: absolute;
  top: -300px;
  left: 50%;
  transform: translateX(-50%);
  width: 860px;
  height: 600px;
  background:
    radial-gradient(closest-side at 40% 50%, rgba(136, 216, 112, 0.2), transparent),
    radial-gradient(closest-side at 64% 48%, rgba(96, 165, 250, 0.18), transparent);
  filter: blur(30px);
  pointer-events: none;
}
.proof .container { position: relative; }
.proof-title {
  font-size: clamp(38px, 5.4vw, 68px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.06;
  margin-bottom: 26px;
}
.proof-accent {
  background: linear-gradient(90deg, var(--accent-bright), var(--accent-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.proof-sub {
  max-width: 620px;
  margin: 0 auto 44px;
  color: var(--dark-soft);
  font-size: 18px;
}

/* ---------------- Founders ---------------- */
.founders { padding: 140px 0; }
.founders-inner { max-width: 860px; }
.founders-quote p {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}
.founders-quote em { color: var(--accent); }
.founders-quote footer { color: var(--ink-faint); font-size: 15px; }

/* ---------------- Footer ---------------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 72px 0 40px;
  background: var(--surface);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand p { margin-top: 18px; color: var(--ink-soft); font-size: 14.5px; }
.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14.5px;
  padding: 5px 0;
  transition: color 0.3s var(--ease);
}
.footer-col a:hover { color: var(--ink); }
.footer-legal {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 28px;
  color: var(--ink-faint);
  font-size: 13.5px;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 980px) {
  .nav-links { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }
  .problem-cols, .how-steps, .stack-cards { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .manu-paths { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 620px) {
  .container { padding: 0 22px; }
  .nav-inner { padding: 14px 22px; }
  .nav-cta .btn-ghost { display: none; }
  .hero { padding-top: 140px; }
  .hero-sub { font-size: 17px; }
  .process-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 34px; }
  .demo-bubble { max-width: 92%; }
  .footer-legal { flex-direction: column; gap: 8px; }
}