/* ============================================================
   WentAround — shadow-launch page styles (local, fully inert)
   Implementing agent_docs/research/three-industry-sweep__20261003-023737/
   ui-ux/idea-0001__20261003-0700.md (§4–§9) 1:1.
   Page revision r2 (2026-10-03): visual-QA's one consolidated revise round —
   P1/P2/P3 applied (inline "visual-QA revise round 1" comments); copy untouched.
   Dark "night-shift instrument panel" direction: 17 tokens + 2 focus
   tokens, one amber accent (D1 budget: five locations), system fonts only,
   no external assets, no motion beyond guarded ≤150ms color transitions.
   ============================================================ */

/* ---------- §7.1 Tokens ---------- */
:root {
  color-scheme: dark;

  --bg-0: #0E1520;        /* page ground, footer ground */
  --bg-1: #151E2C;        /* cards, alert-card shell, chips, sample tag, radio visual bg, skip link */
  --bg-2: #0A111B;        /* inset wells: email input, fieldset, map panel, tg-bubble, embed, chips */
  --band: #182233;        /* signup band full-bleed ground */
  --band-soft: #111A28;   /* airports strip full-bleed ground */

  --line-1: #26344A;      /* decorative hairlines */
  --line-2: #3A4C66;      /* decorative keylines: map-panel runway glyphs only */
  --line-ui: #5E7089;     /* interactive-component boundaries (D5) */

  --ink-hi: #E9EFF7;      /* headings, wordmark, input text, values, price numbers, success text */
  --ink-body: #C9D4E2;    /* body copy, badges, chips, radio labels */
  --ink-mute: #93A6BC;    /* kickers, numerals, captions, consent, footer, meta */
  /* --ink-faint (#647A93) is decorative-only (D4) and intentionally unused on this page. */

  --alert: #FFB020;       /* D1 budget — five locations only (see below) */
  --alert-hover: #FFC14D; /* S8 hover fill only */
  --alert-ink: #1F1408;   /* text on the amber fill */

  --link: #8FC5F2;        /* CTA text, text links, mockup links, radio selected dot */
  --error: #FFA3A3;       /* live-variant error text only (ruling d) */

  --focus-outer: #E9EFF7; /* outer focus ring — the conformance carrier */
  --focus-inner: #10161F; /* inner focus ring (functional against the amber fill) */

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---------- Reset / base ---------- */
* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--ink-body);
  font-family: var(--font-sans);
  font-size: 1.02rem;
  line-height: 1.65;
  overflow-wrap: break-word;
}

h1, h2, h3, p, fieldset, legend { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

@media (min-width: 1024px) {
  body { font-size: 1.06rem; }
}

/* ---------- §8 Focus ---------- */
:focus-visible {
  outline: 2px solid var(--focus-outer);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--focus-inner);
}

/* tabindex="-1" anchor waypoints, not controls — no ring drawn (spec §2) */
.airports:focus,
.signup-band:focus { outline: none; }

/* ---------- Geometry: rail ---------- */
.rail,
.rail-block {
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 32px);
}

.rail-block { padding-block: clamp(64px, 9vw, 104px); }

/* ---------- §4.2 Skip link ---------- */
.skip-link {
  position: absolute;
  top: -60px; /* fully off-canvas (element is ~52px tall incl. borders); snaps to top:0 on focus */
  left: 16px;
  z-index: 10;
  background: var(--bg-1);
  color: var(--ink-hi);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  border: 2px solid var(--line-ui);
  border-radius: 0 0 10px 10px;
  padding: 12px 20px;
}

.skip-link:focus-visible { top: 0; }

/* ---------- §4.1 Header ---------- */
.site-header { padding-block: 16px; }

.wordmark {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 650;
  color: var(--ink-hi);
}

/* ---------- Section kickers (h2 semantics, mono voice) ---------- */
.section-kicker {
  margin: 0 0 32px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ---------- §4.3 Hero ---------- */
.hero { padding-top: clamp(48px, 7vw, 80px); }

.hero-badge {
  display: inline-block;
  background: var(--bg-2);
  border: 2px solid var(--line-ui);
  border-radius: 999px;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--ink-body);
}

.hero-headline {
  margin-top: 24px;
  font-size: clamp(2.5rem, 6.5vw, 3.4rem);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink-hi);
}

/* P1 (visual-QA revise round 1): the compound noun "go-around." must never
   split at its hyphen (sentence period stays inside the atomic unit).
   Presentational span only — characters stay verbatim. */
.go-nowrap {
  display: inline-block;
  white-space: nowrap;
}

.hero-hook {
  margin-top: 16px;
  max-width: 56ch;
  color: var(--ink-body);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: 32px;
}

/* ---------- §6 Buttons (shared: H4 outline CTA + S8 amber) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 12px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--line-ui);
  color: var(--link);
}

.btn-outline:hover { border-color: var(--link); }

.link-quiet {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 4px;
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.glyph { font-size: 1.05em; }

/* At 320px: H4 full-width, H5 wraps beneath (§9) */
.cta-row .btn-outline { flex: 1 1 100%; }

/* ---------- Hero visual (§5.3 map panel + §5.1 alert card) ---------- */
.hero-visual { margin-top: 40px; }

.map-panel {
  border: 1px solid var(--line-1);
  border-radius: 16px;
  background-color: var(--bg-2);
  background-image:
    repeating-linear-gradient(0deg, var(--line-1) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, var(--line-1) 0 1px, transparent 1px 48px);
  aspect-ratio: 16 / 11;
  /* min-height is scoped to ≥720px: on narrow screens a clamped block-size
     makes aspect-ratio DERIVE the width (280px × 16/11 = 407px) and overflow
     the viewport (measured). At ≥720px the natural ratio height (≥468px)
     always exceeds 280px, so the floor is inert there. */
  overflow: hidden;
}

.map-panel svg { display: block; width: 100%; height: 100%; }

/* Alert card — mobile: static, full width */
.alert-card {
  width: 100%;
  margin-top: 16px;
  background: var(--bg-1);
  border: 2px solid var(--line-ui);
  border-radius: 12px;
  padding: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.tg-bubble {
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: 12px;
  padding: 14px 16px;
}

.tg-row1 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.4;
}

.tg-event {
  color: var(--alert); /* D1 location 2: hero GO-AROUND token */
  font-weight: 700;
  letter-spacing: 0.04em;
}

.tg-sep,
.tg-meta { color: var(--ink-mute); }

.sample-tag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  background: var(--bg-1);
  border: 1px solid var(--line-1);
  border-radius: 4px;
  padding: 2px 8px;
}

.tg-row2 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--ink-body);
}

.tg-row3 { margin: 0; }

/* Inert spans styled as links — never focusable, never a link role */
.mock-link {
  color: var(--link);
  font-size: 0.85rem;
  line-height: 1.5;
  text-decoration: underline;
  text-underline-offset: 3px;
  margin-right: 12px;
  cursor: default;
}

/* ---------- §5.2 Discord-style embed (HOW-IT-WORKS) ---------- */
.mock-embed {
  max-width: 640px;
  margin: 40px auto 0;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-left: 3px solid var(--alert); /* D1 location 3: mockup-alert bar */
  border-radius: 12px;
  padding: 16px;
}

.embed-header {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.4;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
}

.embed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0 0 12px;
}

.embed-field {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.embed-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.embed-value {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--ink-hi);
}

/* ---------- §4.5 Features (plain typographic cards, no icons) ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--bg-1);
  border: 1px solid var(--line-1); /* decorative — cards are non-interactive */
  border-radius: 14px;
  padding: 20px;
}

.card-title {
  margin: 0 0 8px;
  font-size: 1.1rem;
  line-height: 1.35;
  font-weight: 650;
  color: var(--ink-hi);
}

.card-body {
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--ink-body);
}

.plan-chip {
  display: inline-block;
  margin-top: 12px;
  background: var(--bg-2);
  border: 2px solid var(--line-ui);
  border-radius: 999px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--ink-body);
}

/* ---------- §4.6 Airports strip (full-bleed, gentle zone) ---------- */
.airports {
  background: var(--band-soft);
  padding-block: clamp(56px, 8vw, 88px);
  scroll-margin-top: 24px;
}

.airports-intro {
  max-width: 60ch;
  color: var(--ink-body);
}

.airport-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 24px 0;
}

.airport-chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px; /* sized for rhythm; non-interactive */
  background: var(--bg-1);
  border: 1px solid var(--line-1);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.98rem;
  line-height: 1.4;
  color: var(--ink-body);
}

.chip-code {
  font-family: var(--font-mono);
  color: var(--ink-hi);
}

.airports-note { color: var(--ink-mute); }

/* ---------- §4.7 Pricing ---------- */
.plan-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.plan-card {
  background: var(--bg-1);
  border-radius: 14px;
  padding: 24px;
}

.plan-card--free { border: 1px solid var(--line-1); }

.plan-card--instant { border: 2px solid var(--line-ui); } /* neutral elevation, no amber (D1) */

.plan-name {
  display: inline-block;
  background: var(--bg-2);
  border: 2px solid var(--line-ui);
  border-radius: 999px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.4;
  font-weight: 650;
  color: var(--ink-body);
}

.price { margin-top: 16px; }

.price-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  color: var(--ink-hi);
}

.price-num--alt { font-size: 1.15rem; }

.price-per {
  font-size: 0.9rem;
  color: var(--ink-mute);
}

.price-alt { margin-top: 4px; }

.plan-line {
  margin: 12px 0;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--ink-body);
}

.plan-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 8px;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--ink-body);
}

.plan-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 0.45em;
  background: var(--line-ui); /* decorative square marker */
}

.fine-print {
  margin-top: 32px;
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-mute);
}

/* ---------- §4.8 Signup band (primary focal point) ---------- */
.signup-band {
  background: var(--band);
  border-top: 2px solid var(--alert); /* D1 location 4: band keyline */
  padding-block: clamp(72px, 10vw, 112px);
  scroll-margin-top: 24px;
}

.signup-title {
  text-align: center;
  font-size: clamp(1.6rem, 3.4vw, 2.1rem);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-hi);
}

.signup-sub {
  margin: 16px auto 40px;
  max-width: 60ch;
  text-align: center;
  color: var(--ink-body);
}

.signup-form {
  max-width: 640px;
  margin-inline: auto;
  text-align: left;
}

/* ---------- §6 Form fields ---------- */
.field { margin: 0 0 4px; }

.field label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.4;
  font-weight: 600;
  color: var(--ink-hi);
}

.field input {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  background: var(--bg-2);
  color: var(--ink-hi);
  border: 2px solid var(--line-ui);
  border-radius: 10px;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.4;
  transition: border-color 150ms ease;
}

.field input:hover { border-color: var(--link); } /* enhancement only */

.intent-group {
  border: 2px solid var(--line-ui);
  border-radius: 12px;
  background: var(--bg-2);
  padding: 12px; /* top raised 8→12px to seat the in-flow legend (P3) */
  margin: 24px 0;
  min-inline-size: 0; /* let the long legend wrap — no overflow at 320px */
}

.intent-group legend {
  /* P3 (visual-QA revise round 1): the UA renders a fieldset legend as a
     patch straddling the top border, swallowing it (flex/grid on the
     fieldset does NOT un-straddle it in Chromium — measured). float:left +
     width:100% is the cross-engine un-straddle: the legend renders as an
     in-flow first row inside the group and the border stays intact. The
     .radio-row flex containers self-clear below the float (measured).
     Fieldset/legend semantics and all strings unchanged. */
  float: left;
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1.02rem;
  line-height: 1.4;
  font-weight: 650;
  color: var(--ink-hi);
  background: var(--bg-2);
  padding: 2px 8px;
  border-radius: 8px;
  max-width: 100%;
}

.radio-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 8px 4px;
  cursor: pointer;
  position: relative;
  color: var(--ink-body);
}

.radio-row input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
}

.radio-visual {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border: 2px solid var(--line-ui);
  border-radius: 50%;
  background: var(--bg-2);
}

/* Selected = filled dot (shape change, never color alone) */
.radio-row input:checked + .radio-visual {
  border-color: var(--link);
  background: radial-gradient(circle at center, var(--link) 0 5px, transparent 6px);
}

/* Focus ring moves to the sibling visual */
.radio-row input:focus-visible {
  outline: none;
  box-shadow: none;
}

.radio-row input:focus-visible + .radio-visual {
  outline: 2px solid var(--focus-outer);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--focus-inner);
}

/* S8 — the page's only filled amber button (D1 location 5).
   P2 (visual-QA revise round 1): full-width on mobile (art direction §8);
   desktop floor lives in the ≥720px block below. */
.btn-amber {
  width: 100%;
  min-height: 52px;
  background: var(--alert);
  border: 2px solid var(--alert);
  color: var(--alert-ink);
  font-weight: 650;
  transition: background-color 150ms ease, border-color 150ms ease;
}

.btn-amber:hover {
  background: var(--alert-hover);
  border-color: var(--alert-hover);
}

/* Status region — present from load, zero-footprint while empty.
   Never display:none, never min-height (2026-10-01 hardening). */
.signup-status { margin: 0; }

/* Live-variant states (signup.js writes text + class; never rendered locally) */
.signup-status.is-success {
  color: var(--ink-hi);
  font-size: 0.95rem;
  line-height: 1.5;
}

.signup-status.is-error {
  color: var(--error);
  font-size: 0.95rem;
  line-height: 1.5;
}

.consent {
  margin: 12px auto 0;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--ink-mute);
  max-width: 56ch;
  text-align: center;
}

/* ---------- §4.9 FAQ (static, long by design) ---------- */
.faq-list { max-width: 760px; }

.faq-item { padding-block: 20px; }

.faq-item + .faq-item { border-top: 1px solid var(--line-1); }

.faq-q {
  margin: 0 0 8px;
  font-size: 1.12rem;
  line-height: 1.4;
  font-weight: 650;
  color: var(--ink-hi);
}

.faq-a {
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--ink-body);
}

/* ---------- §4.10 Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-1);
  padding-block: 32px;
}

.footer-line {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--ink-mute);
}

/* ---------- §9 Responsive contract (base 320–719 → 720 → 1024) ---------- */
@media (min-width: 480px) {
  .embed-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
  }

  /* spec §5.3 fallback floor — inert here (natural height ≥ 468px at this width) */
  .map-panel { min-height: 280px; }
}

@media (min-width: 720px) {
  .feature-card { padding: 24px; }

  .feature-grid { grid-template-columns: 1fr 1fr; }

  .feature-card--wide { grid-column: 1 / -1; }

  .steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .plan-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .cta-row .btn-outline { flex: 0 0 auto; }

  /* P2 (visual-QA revise round 1): S8 meets the art direction §8 desktop
     minimum of 280px; measured 198px content-sized before the fix. */
  .btn-amber { width: auto; min-width: 280px; }
}

@media (min-width: 1024px) {
  .hero {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
    padding-bottom: calc(clamp(64px, 9vw, 104px) + 48px); /* headroom for card overhang */
  }

  .hero-visual {
    position: relative;
    margin-top: 0;
  }

  .alert-card {
    position: absolute;
    left: 24px;
    bottom: -32px;
    width: min(420px, 88%);
    margin-top: 0;
  }
}

/* Steps grid on mobile: stacked, same gap */
@media (max-width: 719.98px) {
  .steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ---------- Motion guard ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}