/* ============ 1. Tokens ============ */
:root {
  --paper: #F4F2ED;
  --card: #FFFFFF;
  --ink: #262A2E;
  --ink-muted: #575E63;
  --hairline: #DAD7CF;
  --oxide: #6B2E1F;
  --bone-on-oxide: #F4F2ED;
  --band-soft: #D9C6BC;      /* reserved; unused in v1 (band-only token) */
  --oxide-rule: #8A5245;
  --font-doc: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-docket: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  --measure: 62ch;
  --band-measure: 40rem;
  --sheet-measure: 34rem;
  --radius: 2px;
  --pad-sec: clamp(4rem, 9vw, 6.5rem);
  --pad-band: clamp(4.5rem, 9vw, 7rem);
  --pad-inline: clamp(1.25rem, 5vw, 2rem);
}

/* ============ 2. Base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-doc);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  line-height: 1.6;
}
h1, h2, h3, p, figure { margin: 0; }
strong { font-weight: 700; }
a { color: inherit; }
:focus-visible {
  outline: 2px solid var(--oxide);
  outline-offset: 2px;
  border-radius: var(--radius);
}
::placeholder { color: var(--ink-muted); opacity: 1; }

/* sr-only: AT-visible/visually-hidden utility (spec r2 Edit A). Used by the pricing
   table caption and (via the same clip pattern, scoped) by the stacked-mode thead. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ============ 3. Layout ============ */
.container {
  max-width: 64rem;
  margin-inline: auto;
  padding-inline: var(--pad-inline);
}
.section {
  border-top: 1px solid var(--hairline);
  padding-block: var(--pad-sec);
}
.section-title {
  font-size: clamp(1.4rem, 2.2vw, 1.6rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.prose { max-width: var(--measure); }
.prose p + p { margin-top: 1em; }

/* ============ 4. Components ============ */

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.75rem 1rem;
  background: var(--card);
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.skip-link:focus { left: 0; }

/* Header / nav */
.site-header { padding-block: 0.75rem; }
.header-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
}
.wordmark {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.25rem;
  list-style: none; /* visual-qa revise round: suppress native disc bullets between nav links */
  padding: 0;
  margin: 0;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  color: var(--ink);
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Hero */
.hero { padding-block: clamp(3rem, 7vw, 5rem) clamp(3.5rem, 8vw, 5.5rem); }
.launch-stamp {
  display: inline-block;
  margin-bottom: 1.5rem;
  padding: 0.5rem 0.9rem;
  border: 2px solid var(--oxide);
  border-radius: var(--radius);
  color: var(--oxide);
  font-family: var(--font-docket);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: rotate(-1.5deg);
}
.hero-title {
  max-width: 22ch;
  font-size: clamp(2.1rem, 4.5vw, 2.9rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.015em;
}
.hero-sub {
  /* 37rem per spec §9 em-dash rule: 36rem wrapped line 2 to start with "— " at 1024/1440;
     37rem probed clean at 640/768/1024/1440 and stays container-bound (no effect) at 320/360. */
  max-width: 37rem;
  margin-top: 1.25rem;
  color: var(--ink-muted);
  font-size: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
  line-height: 1.55;
}
.hero-cta { margin-top: 1.75rem; }

/* Buttons (both CTAs; the page's only oxide fills) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.25rem;
  border: 0;
  border-radius: var(--radius);
  font-family: var(--font-doc);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--oxide);
  color: var(--card);
}

/* What it does */
.benefit-intro { margin-top: 1.25rem; max-width: var(--measure); }
.benefit-list {
  margin-top: 2rem;
  border-top: 1px solid var(--hairline);
  list-style: none;
  padding: 0;
}
.benefit {
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--hairline);
}
.benefit-title { font-size: clamp(1.05rem, 1rem + 0.2vw, 1.125rem); font-weight: 700; }
.benefit-body {
  /* 63ch per spec §9 em-dash rule: 62ch (var(--measure)) wrapped benefit 1's line 2 to start
     with "— " at 768/1024/1440; 63ch probed clean there and changes nothing below ~560px. */
  margin-top: 0.5rem;
  max-width: 63ch;
}
.free-tier-line { margin-top: 2rem; max-width: var(--measure); font-weight: 600; }

/* How it works */
.steps {
  margin-top: 1.5rem;
  padding-left: 1.5rem;
  max-width: var(--measure);
  list-style: decimal;
  display: grid;
  gap: 1rem;
}
.step strong { font-weight: 700; }

/* Mockup (fake-UI contract: see §8) */
.mockup-figure { margin-top: 2.5rem; }
.docket-sheet {
  width: 100%;
  max-width: var(--sheet-measure);
  background: var(--card);
  border: 1px solid var(--hairline);
  border-top: 2px dashed var(--hairline);
  padding: 1.5rem;
}
.mockup-figure figcaption {
  margin-top: 0.75rem;
  color: var(--ink-muted);
  font-size: 0.875rem;
}
.docket-body {
  font-family: var(--font-docket);
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--ink);
}
.docket-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--hairline);
}
.docket-brand {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.docket-ref { color: var(--ink-muted); }
.docket-trip { margin-top: 0.75rem; }
.docket-group { margin-top: 1.25rem; }
.docket-group-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}
.docket-line {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.4rem;
}
.docket-label { min-width: 0; }
.docket-amt {
  flex-shrink: 0;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.docket-note-line .docket-label { color: var(--ink-muted); }
.docket-total {
  margin-top: 1.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--ink);
  font-weight: 700;
}
.docket-total-amt { font-variant-numeric: tabular-nums; }
.docket-export {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--hairline);
}
.mock-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.mock-btn {
  display: inline-block;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--ink-muted);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--ink);
  font-size: 0.78rem;
}

/* Pricing */
.pricing-lead { margin-top: 1.25rem; max-width: var(--measure); }
.table-card {
  width: 100%;
  max-width: 44rem;
  margin-top: 2rem;
  background: var(--card);
  border: 1px solid var(--hairline);
}
.pricing-table {
  width: 100%;
  border-collapse: collapse;
}
.pricing-table th,
.pricing-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--hairline);
  text-align: left;
  vertical-align: top;
}
.pricing-table thead th {
  border-bottom: 1px solid var(--ink);
  color: var(--ink-muted);
  font-family: var(--font-docket);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.pricing-table tbody th {
  font-family: var(--font-docket);
  font-size: 0.95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
/* spec r2 Edit B — column voices: Fleet fit reads secondary; paid-row price cells
   carry the docket-mono tabular-numeral voice (Free row's third cell is narrative
   scope text, deliberately excluded from the mono voice). */
.pricing-table td:nth-child(2) {
  color: var(--ink-muted);
  font-size: 0.875rem;
}
.pricing-table tbody tr:nth-child(n+2) td:nth-child(3) {
  font-family: var(--font-docket);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}
.pricing-bills { /* spec r2 Edit C — bill-by-fleet docket line under the table card */
  margin-top: 0.75rem;
  max-width: 44rem;
  font-family: var(--font-docket);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.pricing-body { margin-top: 1.5rem; max-width: var(--measure); }
.pricing-closer { margin-top: 1rem; max-width: var(--measure); font-weight: 600; }

/* FAQ */
.faq-list { margin-top: 2rem; max-width: var(--measure); }
.faq-item { padding-block: 1.25rem; border-top: 1px solid var(--hairline); }
.faq-item:last-child { border-bottom: 1px solid var(--hairline); }
.faq-q { font-size: 1.05rem; font-weight: 700; }
.faq-a { margin-top: 0.5rem; }

/* Signup band (focal point — see §7) */
.signup-band {
  background: var(--oxide);
  color: var(--bone-on-oxide);
  padding-block: var(--pad-band);
}
.band-inner { max-width: var(--band-measure); } /* after .container in the cascade */
.band-title {
  font-size: clamp(1.9rem, 3.4vw, 2.3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.band-hook { margin-top: 1rem; max-width: 36rem; }
.docket-card {
  width: 100%;
  margin-top: 2rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--hairline);
  border-top: 2px dashed var(--hairline);
}
.signup-form { margin: 0; }
.form-label {
  display: block;
  color: var(--ink);
  font-family: var(--font-docket);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.form-input {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--ink-muted);
  border-radius: var(--radius);
  font-family: var(--font-docket);
  font-size: 1rem;
}
.form-submit { width: 100%; }
.form-disclosure {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--oxide-rule);
  color: var(--ink-muted);
  font-size: 0.875rem;
  line-height: 1.55;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding-block: 2.5rem;
}
.footer-brand { font-weight: 600; }
.footer-launch { margin-top: 0.25rem; color: var(--ink-muted); }
.footer-nav { margin-top: 1rem; }
.footer-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0;
  list-style: none;
}
.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-copy {
  margin-top: 1.25rem;
  color: var(--ink-muted);
  font-size: 0.875rem;
}

/* ============ 5. Responsive breakpoints and utilities ============ */
@media (min-width: 30em) { /* 480px */
  .form-row { flex-direction: row; }
  .form-input { flex: 1; min-width: 0; }
  .form-submit { width: auto; white-space: nowrap; }
  .footer-list { flex-direction: row; flex-wrap: wrap; gap: 0 1rem; }
}
/* visual-qa revise round (≥640px only): Chrome treats en/hyphen dashes as break
   opportunities INSIDE the NBSP-bound units, so fleet-fit cells ("2–3 aircraft"),
   the plan row labels ("Free — quote-only") and the fleet-fit header cell wrapped
   into 2-line stacks. Scoped ≥40em so the 480px watch window keeps its measured
   behavior byte-for-byte; NOT table-wide — price cells and the Plan/Price headers
   keep their normal wrap. */
@media (min-width: 40em) { /* 640px */
  .pricing-table thead th:nth-child(2),
  .pricing-table td:nth-child(2),
  .pricing-table tbody th { white-space: nowrap; }
}
@media (min-width: 48em) { /* 768px */
  .benefit { padding-block: 1.75rem; }
  .faq-item { padding-block: 1.5rem; }
  .pricing-table th, .pricing-table td { padding: 0.9rem 1rem; }
  .docket-sheet { padding: 1.75rem; }
  .docket-body { font-size: 0.9rem; }
}
@media (min-width: 64em) { /* 1024px */
  .steps { gap: 1.25rem; }
  .docket-sheet { padding: 2rem; }
}
@media (max-width: 29.99em) { /* below 480px: pricing table stacks — full <table> semantics kept for AT (thead visually hidden via clip, NEVER display:none) */
  .pricing-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
  }
  .pricing-table, .pricing-table tbody, .pricing-table tr,
  .pricing-table th, .pricing-table td { display: block; }
  .pricing-table tr { padding: 1rem 0.875rem; }
  .pricing-table tr + tr { border-top: 1px solid var(--hairline); }
  .pricing-table th, .pricing-table td { padding: 0; border-bottom: 0; }
  .pricing-table td { margin-top: 0.375rem; }
}