/* AgentGrow — dark, single-accent landing page */
:root {
  --bg: #0a0c10;
  --bg-2: #0f1218;
  --surface: #13171f;
  --surface-2: #181d27;
  --line: #222834;
  --line-2: #2e3646;
  --ink: #eef1f5;
  --ink-2: #a9b1bf;
  --muted: #6e7686;
  --accent: #3ee08f;
  --accent-ink: #062814;
  --accent-soft: rgba(62, 224, 143, 0.12);
  --radius: 14px;
  --f-display: "Space Grotesk", system-ui, sans-serif;
  --f-body: "Inter", system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: var(--f-display); margin: 0; letter-spacing: -0.02em; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 780px; }
.accent { color: var(--accent); }
.center { text-align: center; }
.mt { margin-top: 20px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 600; font-size: 0.95rem;
  padding: 12px 20px; border-radius: 10px;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  box-shadow: 0 0 0 0 rgba(62, 224, 143, 0);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 30px -8px rgba(62, 224, 143, 0.55); }
.btn-sm { padding: 8px 14px; font-size: 0.88rem; }
.btn-lg { padding: 16px 26px; font-size: 1.02rem; }
.btn-block { width: 100%; }
.btn-ghost { color: var(--ink-2); font-weight: 500; padding: 12px 4px; }
.btn-ghost:hover { color: var(--ink); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 12, 16, 0.78);
  backdrop-filter: saturate(150%) blur(12px);
  -webkit-backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.logo-bg { color: var(--accent); }
.logo.small { font-size: 1rem; gap: 8px; }
.nav-links { display: flex; gap: 28px; font-size: 0.92rem; color: var(--ink-2); }
.nav-links a:hover { color: var(--ink); }
@media (max-width: 760px) { .nav-links { display: none; } }

/* Hero */
.hero { position: relative; padding: 110px 0 90px; overflow: hidden; }
.glow {
  position: absolute; left: 50%; top: -260px; width: 900px; height: 600px; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(62, 224, 143, 0.22), rgba(62, 224, 143, 0) 70%);
  pointer-events: none;
}
.glow.small { top: -200px; width: 700px; height: 420px; }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
  opacity: 0.45;
}
.hero-inner { position: relative; z-index: 1; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 24px; }
.hero-inner .fine { margin-top: -4px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--f-mono); font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2);
  border: 1px solid var(--line-2); background: var(--surface); padding: 6px 12px; border-radius: 999px;
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .35; } }
h1 { font-size: clamp(2.2rem, 5.6vw, 3.9rem); line-height: 1.06; font-weight: 700; max-width: 19ch; }
.lede { font-size: clamp(1.05rem, 2vw, 1.2rem); color: var(--ink-2); max-width: 50ch; }
.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 12px 20px; margin-top: 6px; }
.fine { font-size: 0.84rem; color: var(--muted); }

/* Sections */
.section { padding: 96px 0; border-top: 1px solid var(--line); }
.sec-head { display: flex; flex-direction: column; gap: 14px; margin-bottom: 48px; max-width: 760px; }
.tag { font-family: var(--f-mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); font-weight: 500; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); line-height: 1.12; font-weight: 700; }
.sec-head.wide { max-width: none; }
.line { display: block; }
.sub { color: var(--ink-2); font-size: 1.08rem; max-width: 62ch; }

/* Cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr; } }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; display: flex; flex-direction: column; gap: 10px;
  transition: border-color .2s ease;
}
.card:hover { border-color: var(--line-2); }
.card h3 { font-size: 1.15rem; }
.card p { color: var(--ink-2); font-size: 0.96rem; }

/* Steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; gap: 12px;
}
.step-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.step-num { font-family: var(--f-mono); font-size: 0.85rem; color: var(--muted); }
.step-price {
  font-family: var(--f-mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--accent); background: var(--accent-soft); padding: 3px 9px; border-radius: 6px;
}
.step h3 { font-size: 1.3rem; }
.step p { color: var(--ink-2); font-size: 0.96rem; }

/* Offer */
.offer { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 28px; align-items: start; }
@media (max-width: 920px) { .offer { grid-template-columns: 1fr; } }
.stack { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 26px 14px; }
.stack-label {
  display: flex; justify-content: space-between;
  font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
  padding: 20px 0 6px; border-bottom: 1px solid var(--line-2);
}
.stack-label span:last-child { color: var(--ink-2); }
.stack-row { display: flex; justify-content: space-between; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.stack-row:last-child { border-bottom: 0; }
.stack-row h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.stack-row p { color: var(--ink-2); font-size: 0.92rem; }
.val { font-family: var(--f-mono); font-size: 0.92rem; color: var(--ink-2); white-space: nowrap; font-variant-numeric: tabular-nums; }

.price-card {
  position: sticky; top: 88px;
  background: linear-gradient(180deg, rgba(62, 224, 143, 0.08), var(--surface) 45%);
  border: 1px solid rgba(62, 224, 143, 0.35); border-radius: var(--radius);
  padding: 28px; display: flex; flex-direction: column; gap: 14px;
  box-shadow: 0 30px 80px -40px rgba(62, 224, 143, 0.4);
}
@media (max-width: 920px) { .price-card { position: static; } }
.badge {
  align-self: flex-start; font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent-ink); background: var(--accent); padding: 4px 10px; border-radius: 6px; font-weight: 500;
}
.total { color: var(--ink-2); font-size: 0.95rem; }
.total s { color: var(--muted); font-family: var(--f-mono); }
.price { font-family: var(--f-display); font-size: 3.4rem; font-weight: 700; line-height: 1; letter-spacing: -0.03em; }
.price-note { color: var(--ink-2); font-size: 0.92rem; }
.checks { list-style: none; margin: 6px 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.checks li { position: relative; padding-left: 28px; font-size: 0.94rem; color: var(--ink); }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.5l4 4 8-9' fill='none' stroke='%233ee08f' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 12px no-repeat;
}

/* Timeline */
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 2px; background: linear-gradient(90deg, var(--accent), var(--line-2)); }
.tl-item { position: relative; padding: 30px 24px 0 0; display: flex; flex-direction: column; gap: 6px; }
.tl-item::before { content: ""; position: absolute; left: 0; top: 0; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.tl-day { font-family: var(--f-mono); font-size: 0.85rem; color: var(--accent); }
.tl-item p { color: var(--ink-2); font-size: 0.94rem; }
@media (max-width: 860px) {
  .timeline { grid-template-columns: 1fr; padding-left: 8px; }
  .timeline::before { left: 15px; right: auto; top: 0; bottom: 0; width: 2px; height: auto; background: linear-gradient(180deg, var(--accent), var(--line-2)); }
  .tl-item { padding: 0 0 26px 40px; }
  .tl-item::before { left: 0; top: 3px; }
}

/* Guarantee */
.guarantee {
  display: flex; gap: 28px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 36px;
}
.guarantee-body { display: flex; flex-direction: column; gap: 14px; }
.seal { color: var(--accent); flex-shrink: 0; }
@media (max-width: 640px) { .guarantee { flex-direction: column; padding: 26px; } }

/* FAQ */
.faq { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 0; font-family: var(--f-display); font-weight: 600; font-size: 1.08rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--f-mono); font-size: 1.3rem; color: var(--accent); transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-2); padding: 0 0 22px; max-width: 68ch; }

/* Final CTA */
.final-card {
  position: relative; overflow: hidden; text-align: center;
  background: var(--surface); border: 1px solid var(--line-2); border-radius: 20px;
  padding: 72px 24px; display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.final-card > *:not(.glow) { position: relative; z-index: 1; }
.final-card .sub { margin-bottom: 12px; }
.final-card .fine { margin-top: 4px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 0.88rem; }

@media (max-width: 560px) {
  .hero { padding: 72px 0 64px; }
  .section { padding: 64px 0; }
  .container { padding: 0 16px; }
  .stack { padding: 4px 18px 10px; }
  .stack-row { gap: 14px; }
  .card, .step { padding: 24px; }
  .guarantee { gap: 18px; }
  .final-card { padding: 56px 20px; }
  .hero-cta { flex-direction: column; gap: 4px; }
  .hero-cta .btn { width: 100%; }
  .price-card { padding: 22px; }
  .nav .btn-sm { padding: 7px 12px; font-size: 0.82rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dot { animation: none; }
  .btn { transition: none; }
}