/* Groundtruth — marketing site
 * Design tokens lifted from docs/design/claude-design-iteration-1/tokens.css
 * Accent overridden to #F3911E (more saturated than the design handover reference). */

@font-face {
  font-family: "Inter Tight";
  src: url("fonts/inter_tight.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter Tight";
  src: url("fonts/inter_tight_italic.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains_mono.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains_mono_italic.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

:root {
  --gt-bg-0: #1c1d20;
  --gt-bg-1: #26272a;
  --gt-bg-2: #303135;
  --gt-bg-3: #3a3b40;
  --gt-border: #454650;
  --gt-border-soft: #383942;
  --gt-text: #f4f5f7;
  --gt-muted: #a3a5ad;
  --gt-dim: #6f7079;
  --gt-faint: #4f5058;

  /* Accent: #F3911E per Isaac's note (more saturated than the handover) */
  --gt-accent: #F3911E;
  --gt-accent-deep: #B0691A;
  --gt-accent-soft: rgba(243, 145, 30, 0.18);
  --gt-on-accent: #2a1d09;

  --gt-lime: #bce85a;
  --gt-red: #ec5836;
  --gt-cyan: #85cdf0;

  --gt-sans: "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --gt-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gt-radius-sm: 6px;
  --gt-radius: 10px;
  --gt-radius-lg: 14px;
  --gt-radius-xl: 18px;

  --gt-max: 1240px;

  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--gt-bg-0);
}
html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  font-family: var(--gt-sans);
  color: var(--gt-text);
  font-feature-settings: "ss01" 1, "cv11" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

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

/* ── Typography ─────────────────────────────────────────────────────────── */

.eyebrow {
  font-family: var(--gt-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gt-muted);
}
.eyebrow-accent { color: var(--gt-accent); }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--gt-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: 4px;
  border: 1px solid var(--gt-border);
  color: var(--gt-muted);
}

.mono { font-family: var(--gt-mono); font-feature-settings: "tnum" 1, "zero" 1; }

.dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  display: inline-block;
}
.dot-pulse {
  animation: gtPulse 1.4s ease-in-out infinite;
}
@keyframes gtPulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ── Buttons ────────────────────────────────────────────────────────────── */

.btn {
  font-family: var(--gt-sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.005em;
  height: 44px;
  padding: 0 16px;
  border-radius: var(--gt-radius);
  border: 1px solid transparent;
  background: var(--gt-bg-2);
  color: var(--gt-text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 200ms ease, border-color 200ms ease;
}
.btn:hover { background: var(--gt-bg-3); }
/* Buttons are <a> links — pin the text colour on :link/:visited so the UA's
 * default visited-link colour (specificity 0,1,1) can't override the button
 * colour (0,1,0) and tank contrast once the mailto link has been clicked. */
.btn,
.btn:link,
.btn:visited { color: var(--gt-text); }
.btn-primary,
.btn-primary:link,
.btn-primary:visited {
  background: var(--gt-accent);
  color: var(--gt-on-accent);
  border-color: var(--gt-accent-deep);
}
.btn-primary:hover,
.btn-primary:focus-visible { background: var(--gt-accent-deep); color: var(--gt-text); }
.btn-ghost,
.btn-ghost:link,
.btn-ghost:visited {
  background: transparent;
  border-color: var(--gt-border);
  color: var(--gt-text);
}
.btn-ghost:hover { background: var(--gt-bg-1); }
.btn-lg { height: 50px; padding: 0 22px; font-size: 15px; }
.btn-xl { height: 52px; padding: 0 26px; font-size: 15px; }

/* ── Cards & rule ───────────────────────────────────────────────────────── */

.card {
  background: var(--gt-bg-1);
  border: 1px solid var(--gt-border-soft);
  border-radius: var(--gt-radius-lg);
}
.card-raised {
  background: var(--gt-bg-2);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius);
}
.rule { height: 1px; background: var(--gt-border-soft); border: 0; margin: 0; }

/* ── Wordmark (text-only placeholder; no logo asset yet) ───────────────── */

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--gt-sans);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.4px;
  color: var(--gt-text);
}
.wordmark-mark {
  width: 22px; height: 22px;
  border-radius: 6px;
  background: var(--gt-accent);
  display: inline-block;
  position: relative;
}
.wordmark-mark::after {
  content: "";
  position: absolute; left: 4px; right: 4px; top: 50%;
  height: 2px; transform: translateY(-50%);
  background: var(--gt-on-accent);
  border-radius: 1px;
}

/* ── Nav ────────────────────────────────────────────────────────────────── */

.nav {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(28, 29, 32, 0.78);
  border-bottom: 1px solid var(--gt-border-soft);
}
.nav-inner {
  max-width: var(--gt-max);
  margin: 0 auto;
  height: 68px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-links {
  display: flex; align-items: center; gap: 28px;
}
.nav-links a {
  font-size: 13px; font-weight: 500;
  color: var(--gt-muted);
  letter-spacing: 0.1px;
  transition: color 200ms ease;
}
.nav-links a:hover { color: var(--gt-text); }
.nav-divider {
  width: 1px; height: 18px;
  background: var(--gt-border);
}
.nav-cta {
  height: 36px;
  padding: 0 16px;
  font-size: 13px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Sections ───────────────────────────────────────────────────────────── */

main > section {
  border-bottom: 1px solid var(--gt-border-soft);
}
.section-inner {
  max-width: var(--gt-max);
  margin: 0 auto;
  padding: 100px 28px;
}
.section-head {
  max-width: 640px;
}
.section-head.center {
  margin: 0 auto;
  text-align: center;
}
.section-head h2 {
  margin: 10px 0 0;
  font-family: var(--gt-sans);
  font-weight: 700;
  font-size: 48px;
  letter-spacing: -1.4px;
  line-height: 1.05;
}
.section-head p {
  margin-top: 14px;
  font-size: 17px;
  line-height: 1.55;
  color: var(--gt-muted);
}

/* ── Hero ───────────────────────────────────────────────────────────────── */

.hero { position: relative; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 900px 500px at 75% 20%, rgba(243, 145, 30, 0.10), transparent 60%),
    radial-gradient(ellipse 700px 400px at 10% 90%, rgba(60, 60, 70, 0.5), transparent 60%);
}
.hero-bg-rings {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    repeating-radial-gradient(circle at 80% 30%, transparent 0, transparent 42px, rgba(60, 60, 70, 0.06) 42px, rgba(60, 60, 70, 0.06) 43px);
}
.hero-inner {
  position: relative;
  max-width: var(--gt-max);
  margin: 0 auto;
  padding: 92px 28px 80px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 64px;
  align-items: center;
}
.hero-pill {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--gt-border);
  background: var(--gt-bg-1);
}
.hero-pill .label {
  font-family: var(--gt-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gt-muted);
}
.hero h1 {
  margin: 20px 0 0;
  font-family: var(--gt-sans);
  font-weight: 700;
  font-size: 72px;
  line-height: 1.0;
  letter-spacing: -2.5px;
  text-wrap: balance;
}
.hero h1 .accent { color: var(--gt-accent); }
.hero-sub {
  margin-top: 22px;
  max-width: 560px;
  font-size: 18px;
  line-height: 1.55;
  color: var(--gt-muted);
}
.hero-ctas {
  margin-top: 30px;
  display: flex; gap: 12px; flex-wrap: wrap;
}
.hero-meta {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  font-family: var(--gt-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gt-dim);
}

/* Hero visual placeholder card (logo / illustrations TBD) */
.hero-visual {
  position: relative;
}
.hero-visual-card {
  background: var(--gt-bg-1);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-xl);
  padding: 22px;
  box-shadow:
    0 40px 80px -20px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(243, 145, 30, 0.06);
}
.hero-visual-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.live-dot {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--gt-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gt-muted);
}
.hero-readout {
  display: flex; align-items: baseline; gap: 12px;
}
.readout-value {
  font-family: var(--gt-mono);
  font-weight: 700;
  font-size: 64px;
  letter-spacing: -2px;
  color: var(--gt-accent);
}
.readout-unit {
  font-family: var(--gt-mono);
  font-size: 18px;
  color: var(--gt-muted);
}
.readout-blow {
  margin-left: auto;
  text-align: right;
  font-family: var(--gt-mono);
  font-size: 11px;
  color: var(--gt-dim);
}
.readout-blow strong {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--gt-text);
}
.placeholder-frame {
  margin-top: 14px;
  padding: 12px;
  background: var(--gt-bg-0);
  border-radius: var(--gt-radius);
  border: 1px solid var(--gt-border-soft);
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.placeholder-frame.tall { min-height: 170px; }
.placeholder-label {
  font-family: var(--gt-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gt-faint);
}

.chip-row {
  margin-top: 14px;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--gt-border);
  background: var(--gt-bg-2);
  font-size: 12px;
  color: var(--gt-muted);
}
.chip .phrase {
  font-family: var(--gt-mono);
  color: var(--gt-text);
}
.chip.lit {
  border-color: var(--gt-accent);
  background: var(--gt-accent-soft);
  color: var(--gt-text);
}
.chip.lit .phrase { color: var(--gt-accent); }

.hero-blow-toast {
  position: absolute; top: -14px; right: 12px;
  background: var(--gt-bg-2);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius);
  padding: 10px 14px;
  font-family: var(--gt-mono);
  font-size: 11px;
  color: var(--gt-text);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.5);
}
.hero-blow-toast .row {
  display: flex; align-items: center; gap: 8px;
  color: var(--gt-muted);
}
.hero-blow-toast .detail {
  margin-top: 4px;
  font-size: 13px;
  color: var(--gt-text);
}

/* ── How it works ───────────────────────────────────────────────────────── */

.how-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.how-card {
  background: var(--gt-bg-1);
  border: 1px solid var(--gt-border-soft);
  border-radius: var(--gt-radius-lg);
  padding: 28px;
}
.how-card .step {
  font-family: var(--gt-mono);
  font-size: 11px;
  color: var(--gt-accent);
  letter-spacing: 0.14em;
}
.how-card h3 {
  margin: 8px 0 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.25;
}
.how-card p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--gt-muted);
  line-height: 1.55;
}
.how-visual {
  margin-top: 22px;
  height: 200px;
  border-radius: var(--gt-radius);
  background: var(--gt-bg-0);
  border: 1px solid var(--gt-border-soft);
  padding: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Features ───────────────────────────────────────────────────────────── */

.features-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
}
.features-shipping {
  background: var(--gt-bg-1);
  border: 1px solid var(--gt-border-soft);
  border-radius: var(--gt-radius-lg);
  padding: 28px;
}
.features-onway {
  background: var(--gt-bg-1);
  border: 1px dashed var(--gt-border);
  border-radius: var(--gt-radius-lg);
  padding: 28px;
}
.features-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.features-list {
  margin-top: 18px;
  display: grid;
  gap: 18px;
}
.features-list.two-col {
  grid-template-columns: 1fr 1fr;
}
.feat-title { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.feat-desc { margin-top: 4px; font-size: 13px; color: var(--gt-muted); line-height: 1.5; }
.feat-check {
  width: 14px; height: 14px;
  flex: 0 0 14px;
  color: var(--gt-accent);
}
.feat-onway-bullet {
  width: 14px; height: 14px;
  flex: 0 0 14px;
  border-radius: 50%;
  border: 1.5px dashed var(--gt-muted);
}
.features-onway-note {
  margin-top: 22px;
  padding: 14px;
  border-radius: var(--gt-radius);
  background: var(--gt-bg-2);
  font-size: 12px;
  color: var(--gt-muted);
  line-height: 1.55;
}
.features-onway-note a { color: var(--gt-accent); }

.tag-accent {
  border-color: var(--gt-accent);
  color: var(--gt-accent);
}

/* ── Audience strip ─────────────────────────────────────────────────────── */

.audience {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 64px;
  align-items: center;
}
.audience-list {
  display: grid; gap: 18px;
}
.audience-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}
.audience-marker {
  width: 36px; height: 36px;
  border-radius: var(--gt-radius);
  background: var(--gt-accent-soft);
  border: 1px solid var(--gt-accent);
  display: flex; align-items: center; justify-content: center;
  color: var(--gt-accent);
  font-family: var(--gt-mono);
  font-weight: 700;
  font-size: 14px;
}
.audience-row h4 { margin: 0; font-size: 16px; font-weight: 600; }
.audience-row p { margin: 4px 0 0; font-size: 14px; color: var(--gt-muted); line-height: 1.55; }

/* ── FAQ ────────────────────────────────────────────────────────────────── */

.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  gap: 64px;
}
.faq-aside {
  margin-top: 22px;
  font-size: 14px;
  color: var(--gt-muted);
  line-height: 1.55;
}
.faq-aside strong { color: var(--gt-text); font-weight: 600; }
.faq-list { display: grid; gap: 0; }
.faq-list details {
  padding: 20px 0;
  border-bottom: 1px solid var(--gt-border-soft);
}
.faq-list details:first-child {
  border-top: 1px solid var(--gt-border-soft);
}
.faq-list summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 600;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary .toggle {
  font-family: var(--gt-mono);
  color: var(--gt-muted);
  font-size: 14px;
  display: inline-block;
  transition: transform 200ms ease;
}
.faq-list details[open] summary .toggle { transform: rotate(45deg); }
.faq-list .answer {
  margin-top: 12px;
  font-size: 14px;
  color: var(--gt-muted);
  line-height: 1.6;
  max-width: 620px;
}

/* ── Final CTA ──────────────────────────────────────────────────────────── */

.final {
  position: relative;
  overflow: hidden;
}
.final-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 700px 400px at 50% 50%, rgba(243, 145, 30, 0.14), transparent 70%);
  pointer-events: none;
}
.final-inner {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
  padding: 120px 28px;
  text-align: center;
}
.final h2 {
  margin: 0;
  font-family: var(--gt-sans);
  font-weight: 700;
  font-size: 64px;
  letter-spacing: -2px;
  line-height: 1.05;
  text-wrap: balance;
}
.final p {
  margin-top: 18px;
  font-size: 18px;
  color: var(--gt-muted);
  line-height: 1.55;
}
.final-ctas {
  margin-top: 32px;
  display: inline-flex; gap: 12px;
}
.signup-form {
  margin: 32px auto 0;
  max-width: 460px;
  text-align: left;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */

footer {
  background: var(--gt-bg-1);
  border-top: 1px solid var(--gt-border-soft);
}
.footer-inner {
  max-width: var(--gt-max);
  margin: 0 auto;
  padding: 56px 28px 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
}
.footer-blurb {
  margin-top: 14px;
  font-size: 13px;
  color: var(--gt-muted);
  line-height: 1.55;
  max-width: 320px;
}
.footer-meta {
  margin-top: 18px;
  font-family: var(--gt-mono);
  font-size: 11px;
  color: var(--gt-dim);
}
.footer-col {
  display: grid; gap: 10px;
  margin-top: 14px;
}
.footer-col a {
  font-size: 13px; color: var(--gt-muted);
}
.footer-col a:hover { color: var(--gt-text); }
.footer-bar {
  border-top: 1px solid var(--gt-border-soft);
}
.footer-bar-inner {
  max-width: var(--gt-max);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--gt-mono);
  font-size: 11px;
  color: var(--gt-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-wrap: wrap;
  gap: 12px;
}

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; padding: 64px 24px 56px; gap: 48px; }
  .hero h1 { font-size: 52px; letter-spacing: -1.5px; }
  .section-inner { padding: 72px 24px; }
  .section-head h2 { font-size: 36px; letter-spacing: -1px; }
  .how-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .features-list.two-col { grid-template-columns: 1fr; }
  .audience { grid-template-columns: 1fr; gap: 40px; }
  .faq-grid { grid-template-columns: 1fr; gap: 40px; }
  .final h2 { font-size: 44px; letter-spacing: -1.4px; }
  .final-inner { padding: 80px 24px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .nav-links a:not(.btn):not(.nav-divider-link) { display: none; }
}

@media (max-width: 600px) {
  .hero h1 { font-size: 40px; letter-spacing: -1px; }
  .readout-value { font-size: 48px; }
  .section-head h2 { font-size: 30px; }
  .final h2 { font-size: 34px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bar-inner { flex-direction: column; align-items: flex-start; }
}