/* Trace marketing site. Tokens match the approved designs (Main, Pricing). */

:root {
  --bg: #f5f6f8; --surface: #ffffff; --surface-2: #eef0f4; --surface-3: #eceff4; --surface-sunk: #fafbfc;
  --ink-surface: #10141d; --accent-soft: #e7ecff; --accent-faint: #f0f3ff; --accent-group: #e9edff;
  --good-soft: #e1f3e5; --warn-soft: #fdf0d5; --bad-soft: #fbe5e3; --warn: #8a5a00; --bad: #b3261e;
  --text: #10141d; --text-2: #3b4252; --muted: #5b6475; --link: #3554e8; --link-strong: #2741c4;
  --warn-text: #5b3c00; --warn-text-2: #6b4a00; --good-text: #14361f; --good-text-2: #14532d; --good: #1d7a3a;
  --bad-text: #8c1d17; --line: #dde1e8; --line-strong: #c6ccd6; --line-soft: #eceff4; --warn-line: #ecd49b;
  --good-line: #b9dcc2; --accent-line: #cdd6fb;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1018; --surface: #161b26; --surface-2: #1d2330; --surface-3: #232a39; --surface-sunk: #131823;
    --ink-surface: #1a2131; --accent-soft: #1f2a52; --accent-faint: #18203d; --accent-group: #141b33;
    --good-soft: #15301f; --warn-soft: #33270f; --bad-soft: #3a1c1a; --warn: #e8bb5c; --bad: #f08c84;
    --text: #e8ecf4; --text-2: #c3cad8; --muted: #9aa3b5; --link: #8ea2ff; --link-strong: #b3c0ff;
    --warn-text: #f0cf8a; --warn-text-2: #e8c37a; --good-text: #a6e3b6; --good-text-2: #9fe0b0; --good: #6fd08c;
    --bad-text: #f5aaa4; --line: #2a3242; --line-strong: #3a4458; --line-soft: #232a39; --warn-line: #5a4518;
    --good-line: #2a5a39; --accent-line: #2a3866;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0d1018; --surface: #161b26; --surface-2: #1d2330; --surface-3: #232a39; --surface-sunk: #131823;
  --ink-surface: #1a2131; --accent-soft: #1f2a52; --accent-faint: #18203d; --accent-group: #141b33;
  --good-soft: #15301f; --warn-soft: #33270f; --bad-soft: #3a1c1a; --warn: #e8bb5c; --bad: #f08c84;
  --text: #e8ecf4; --text-2: #c3cad8; --muted: #9aa3b5; --link: #8ea2ff; --link-strong: #b3c0ff;
  --warn-text: #f0cf8a; --warn-text-2: #e8c37a; --good-text: #a6e3b6; --good-text-2: #9fe0b0; --good: #6fd08c;
  --bad-text: #f5aaa4; --line: #2a3242; --line-strong: #3a4458; --line-soft: #232a39; --warn-line: #5a4518;
  --good-line: #2a5a39; --accent-line: #2a3866;
  color-scheme: dark;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-wrap: break-word;
}
a { color: var(--link); }
a:hover { color: var(--link-strong); }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 4px; }
.on-ink :focus-visible { outline-color: #8ea2ff; }
code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }
pre { margin: 0; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link { position: absolute; left: 16px; top: -48px; z-index: 10; padding: 8px 12px; background: var(--surface); border-radius: 8px; }
.skip-link:focus { top: 8px; }

.display { font-family: 'Inter Tight', Inter, sans-serif; }
.wrap { max-width: 1248px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.grid-auto {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(min(var(--min, 300px), 100%), 1fr));
}
.stack { display: flex; flex-direction: column; }

/* Header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { padding-top: 16px; padding-bottom: 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 18px; }
.brand:hover { color: var(--text); }
.brand svg { flex: none; }
.brand .sep { stroke: var(--surface); }
.site-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; flex: 1; font-size: 15px; }
.site-nav a { color: var(--text-2); text-decoration: none; }
.site-nav a:hover { color: var(--text); }
.site-nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
.header-link { font-size: 15px; color: var(--text); text-decoration: none; font-weight: 500; }
.header-link:hover { color: var(--link-strong); }

/* Theme switch */
.theme-switch { display: inline-flex; padding: 2px; gap: 2px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); }
.theme-switch[hidden] { display: none; }
.theme-switch button {
  display: grid; place-items: center; width: 28px; height: 28px; padding: 0;
  border: 0; border-radius: 7px; background: transparent; color: var(--muted); cursor: pointer;
}
.theme-switch button:hover { color: var(--text); }
.theme-switch button[aria-pressed="true"] { background: var(--surface-2); color: var(--text); }
.theme-switch svg { width: 16px; height: 16px; }

/* Buttons: one filled primary, everything else outlined */
.btn {
  display: inline-block; text-decoration: none; border-radius: 10px; font-size: 16px; font-weight: 600;
  border: 1px solid var(--line-strong); color: var(--text); background: transparent; text-align: center;
  padding: 14px 22px;
}
.btn:hover { color: var(--text); background: var(--surface-2); }
.btn-strong { font-weight: 700; padding-top: 15px; padding-bottom: 15px; }
.btn-primary { font-weight: 700; padding: 15px 22px; background: #3554e8; border-color: #3554e8; color: #ffffff; }
.btn-primary:hover { background: #2741c4; border-color: #2741c4; color: #ffffff; }
.btn-ink { border-color: #3a4458; color: #ffffff; }
.btn-ink:hover { color: #ffffff; background: rgba(255, 255, 255, 0.06); border-color: #5a6680; }
.btn-header { font-size: 15px; padding: 11px 18px; background: var(--surface); }
.btn-block { margin-top: auto; padding-left: 20px; padding-right: 20px; }

/* Shared section bits */
.section { padding-top: 72px; padding-bottom: 24px; }
.section-title { margin: 0 0 32px; font-size: 36px; letter-spacing: -0.02em; }
.section-title-lg { margin: 0; font-size: 40px; line-height: 1.1; letter-spacing: -0.02em; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--link); }
.lede { margin: 0; font-size: 17px; line-height: 1.6; color: var(--text-2); }
.more { font-weight: 600; font-size: 16px; align-self: flex-start; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; display: flex; flex-direction: column; }
.card-text { font-size: 15px; line-height: 1.55; color: var(--muted); }
.card-text code { font-size: 13px; }
.snippet {
  background: var(--surface-2); border-radius: 8px; padding: 14px; font-size: 12.5px; line-height: 1.6;
  color: var(--text); white-space: pre; overflow-x: auto;
}
.snippet-wrap { white-space: pre-line; overflow-wrap: anywhere; }

/* Hero */
.hero { background: var(--ink-surface); color: #e8ecf4; }
.hero-inner {
  padding-top: 96px; padding-bottom: 88px; display: grid; gap: 56px; align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
}
.hero-copy { display: flex; flex-direction: column; gap: 24px; }
.pill {
  align-self: flex-start; font-size: 13px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  color: #c3cad8; border: 1px solid #3a4458; padding: 6px 12px; border-radius: 999px;
}
.hero h1 { margin: 0; font-size: 60px; line-height: 1.04; letter-spacing: -0.03em; color: #ffffff; }
.hero-lede { margin: 0; font-size: 19px; line-height: 1.55; color: #c3cad8; max-width: 560px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .actions { padding-top: 8px; }

.terminal {
  background: #0b0e15; border: 1px solid #2a3242; border-radius: 16px; padding: 22px;
  display: flex; flex-direction: column; gap: 14px; font-size: 13.5px; line-height: 1.6; min-width: 0;
}
.terminal-bar { display: flex; gap: 8px; align-items: center; color: #8f98ab; font-family: Inter, sans-serif; font-size: 13px; }
.terminal-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: #2a3242; }
.terminal-bar .label { padding-left: 8px; }
.terminal p, .terminal pre { margin: 0; font: inherit; }
.t-cmd { color: #45c75b; }
.t-out { color: #d6dcea; }
.t-out-pre { white-space: pre-line; }
.t-dim { color: #8f98ab; }
.t-good { color: #45c75b; }

/* Loop */
.loop .card { padding: 20px; gap: 8px; }
.step-label { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--link); font-weight: 500; }
.loop h3 { margin: 0; font-size: 17px; }
.loop .card-text { line-height: 1.5; }
.bare-list { list-style: none; margin: 0; padding: 0; }

/* Privacy */
.split { display: grid; gap: 48px; align-items: start; grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr)); }
.split-copy { gap: 16px; }
.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.facts .card { padding: 18px; gap: 6px; }
.facts h3 { margin: 0; font-size: 15px; }
.facts .card-text { font-size: 14px; line-height: 1.5; }

/* Performance */
.panel {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 40px;
  display: grid; gap: 40px; align-items: center; grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
}
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin: 0; }
.stat { display: flex; flex-direction: column; gap: 4px; margin: 0; }
.stat dd { margin: 0; order: -1; font-family: 'Inter Tight', sans-serif; font-size: 44px; font-weight: 700; letter-spacing: -0.02em; color: var(--text); }
.stat dt { font-size: 14px; color: var(--muted); }

/* Agents */
.features .card { padding: 24px; gap: 12px; min-width: 0; }
.features h3 { margin: 0; font-size: 18px; }
.error-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.error-list li { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line-soft); padding-bottom: 8px; }
.error-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.error-list strong { white-space: nowrap; }

/* Any site / teams */
.wide .card { padding: 28px; gap: 10px; }
.wide h3 { margin: 0; font-size: 20px; }

/* Open source CTA */
.cta-section { padding-top: 72px; padding-bottom: 96px; }
.cta {
  background: var(--ink-surface); border-radius: 20px; padding: 56px 40px; display: flex; flex-wrap: wrap;
  gap: 32px; align-items: center; justify-content: space-between;
}
.cta-copy { display: flex; flex-direction: column; gap: 10px; max-width: 640px; }
.cta h2 { margin: 0; font-size: 36px; letter-spacing: -0.02em; color: #ffffff; }
.cta p { margin: 0; font-size: 17px; line-height: 1.55; color: #c3cad8; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { padding-top: 32px; padding-bottom: 32px; display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; font-size: 14px; color: var(--muted); }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.footer-inner nav a { color: var(--text-2); }
.footer-inner nav a:hover { color: var(--text); }

/* Pricing */
.pricing-hero { padding-top: 72px; padding-bottom: 40px; display: flex; flex-direction: column; gap: 14px; align-items: center; text-align: center; }
.pricing-hero h1 { margin: 0; font-size: 52px; letter-spacing: -0.03em; }
.pricing-hero p { margin: 0; font-size: 18px; line-height: 1.55; color: var(--text-2); max-width: 640px; }
.plans-section { padding-bottom: 48px; }
.plans { display: flex; flex-wrap: wrap; gap: 20px; align-items: stretch; }
.plan-col { flex: 1 1 300px; min-width: 0; display: flex; flex-direction: column; gap: 12px; }
.group-label { margin: 0; font-size: 15px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.plan-col > .group-label { padding: 0 4px; }
.plan {
  flex: 1; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 32px;
  display: flex; flex-direction: column; gap: 20px; min-width: 0;
}
.plan-head { display: flex; flex-direction: column; gap: 8px; }
.plan-name { margin: 0; font-family: 'Inter Tight', sans-serif; font-size: 44px; font-weight: 700; letter-spacing: -0.02em; line-height: normal; }
.plan-sub { font-size: 15px; color: var(--muted); }
.plan-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 15px; line-height: 1.45; }
.plan-cmd { display: block; background: var(--surface-2); border-radius: 8px; padding: 12px 14px; font-size: 13px; }
.plan-featured { border: 2px solid #3554e8; padding: 31px; }
.plan-ink { background: var(--ink-surface); color: #e8ecf4; border: 0; }
.plan-ink .plan-name { color: #ffffff; }
.plan-ink .plan-sub { color: #c3cad8; }

.hosted {
  flex: 2 1 646px; min-width: 0; background: var(--accent-group); border: 1px solid var(--accent-line);
  border-radius: 20px; padding: 12px; display: flex; flex-direction: column; gap: 12px;
}
.hosted-head { padding: 8px 12px 4px; display: flex; flex-wrap: wrap; gap: 4px 16px; align-items: baseline; }
.hosted-head .group-label { color: var(--link-strong); }
.hosted-head span { font-size: 14px; color: var(--text-2); }
.hosted-plans { flex: 1; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); }

.faq-section { padding-bottom: 96px; }
.faq-section h2 { margin: 0 0 20px; font-size: 28px; letter-spacing: -0.02em; }
.faq .card { padding: 22px; gap: 8px; }
.faq h3 { margin: 0; font-size: 16px; }

/* Small screens */
/* How it works: three lanes. The diagram keeps one shape (1168 × 510) at every
   width, so cards, labels and arrows are placed in units of that box. */
.how .section-title { max-width: 40ch; }
.lanes {
  --w: 1168; --h: 510;
  position: relative; aspect-ratio: 1168 / 510; container-type: inline-size;
  border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
}
.lane { position: absolute; left: 0; right: 0; height: calc(100% / 3); }
.lane-site { top: 0; background: var(--surface); }
.lane-trace { top: calc(100% / 3); background: var(--accent-faint); border-top: 1px solid var(--accent-line); border-bottom: 1px solid var(--accent-line); }
.lane-agent { top: calc(200% / 3); background: var(--surface-2); }
.lane-name {
  position: absolute; left: 1.7%; top: 9.4%;
  font-size: clamp(9px, 1.03cqi, 12px); font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
}
.lane-trace .lane-name { color: var(--link); }
.lane-arrows { position: absolute; inset: 0; width: 100%; height: 100%; fill: none; stroke: var(--muted); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.lane-arrows marker path { fill: var(--muted); stroke: none; }
.lane-card {
  position: absolute; box-sizing: border-box;
  left: calc(var(--x) / var(--w) * 100%); top: calc(var(--y) / var(--h) * 100%);
  width: calc(164 / 1168 * 100%); height: calc(96 / 510 * 100%);
  padding: 1.03cqi 1.2cqi; display: flex; flex-direction: column; justify-content: center; gap: .2cqi;
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: 1.03cqi;
  font-size: clamp(9px, 1.11cqi, 13px); line-height: 1.38; color: var(--muted);
}
.lane-card b { font-size: clamp(11px, 1.28cqi, 15px); color: var(--text); }
.lane-card.is-trace { border: 1.5px solid var(--link); }
.lane-card.is-check { border: 1.5px solid #45c75b; }
.lane-card.is-agent { background: #10141d; border-color: #3a4458; color: #b7bfcd; }
.lane-card.is-agent b { color: #ffffff; }
.lane-label {
  position: absolute; left: calc(var(--x) / var(--w) * 100%); top: calc(var(--y) / var(--h) * 100%);
  font-size: clamp(9px, 1.11cqi, 13px); color: var(--text-2);
}
.lane-label[style*="--center"] { transform: translateX(-50%); }
.how-note { margin: 20px 0 0; color: var(--muted); font-size: 15px; line-height: 1.55; max-width: 72ch; }
.how-note b { color: var(--text); }

/* The same steps as a list: for screen readers always, on screen when narrow. */
.lanes-list {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
@media (max-width: 860px) {
  .lanes { display: none; }
  .lanes-list {
    position: static; width: auto; height: auto; overflow: visible; clip: auto; white-space: normal;
    display: grid; gap: 10px; counter-reset: step;
  }
  .lanes-list li {
    counter-increment: step; display: grid; grid-template-columns: auto 1fr; column-gap: 12px; row-gap: 2px;
    padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
    color: var(--muted); font-size: 15px; line-height: 1.5;
  }
  .lanes-list li::before {
    content: counter(step); grid-row: span 3; width: 26px; height: 26px; border-radius: 50%;
    display: grid; place-items: center; font-size: 13px; font-weight: 700; background: var(--surface-2); color: var(--text);
  }
  .lanes-list b { color: var(--text); font-size: 16px; }
  .lane-tag { font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
  .lane-tag.is-trace { color: var(--link); }
  .lane-tag.is-agent { color: var(--text-2); }
}

@media (max-width: 720px) {
  .header-inner { gap: 12px 16px; }
  .brand { order: 0; }
  .theme-switch { order: 1; margin-left: auto; }
  .btn-header { order: 2; }
  .site-nav { order: 3; flex: 1 1 auto; }
  .header-link { order: 4; }
  .hero-inner { padding-top: 56px; padding-bottom: 56px; gap: 40px; }
  .hero h1 { font-size: 40px; }
  .hero-lede { font-size: 17px; }
  .section { padding-top: 56px; }
  .section-title, .cta h2 { font-size: 30px; }
  .section-title-lg { font-size: 32px; }
  .panel { padding: 24px; }
  .stat dd { font-size: 34px; }
  .cta { padding: 40px 24px; }
  .cta-section { padding-top: 56px; padding-bottom: 64px; }
  .pricing-hero { padding-top: 48px; }
  .pricing-hero h1 { font-size: 36px; }
  .plan { padding: 24px; }
  .plan-featured { padding: 23px; }
  .plan-name { font-size: 36px; }
}

@media (max-width: 520px) {
  .facts { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: minmax(0, 1fr); }
  .actions .btn { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}