/* ============================================================
   Preflight — design tokens (per design handoff).
   Overcast-paper surfaces, night-navy ink, ONE reserved accent:
   controlled-airspace magenta. Verdict inks identical in both
   themes. The verdict is a rubber stamp — ink on paper, no shadow.
   ============================================================ */

@font-face {
  font-family: 'Barlow Condensed';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/barlow-condensed-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Barlow Condensed';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/barlow-condensed-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Barlow Condensed';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/barlow-condensed-700.woff2') format('woff2');
}

:root {
  /* surfaces — light "overcast paper" */
  --paper: #eceff3;
  --paper-raised: #fdfdfe;
  --paper-sunk: #e2e7ec;
  --ink: #101c2b;
  --ink-2: #42505f;
  --ink-3: #6b7887;
  --hairline: rgba(16, 28, 43, 0.13);
  --hairline-strong: rgba(16, 28, 43, 0.28);
  /* the ONE accent — controlled-airspace magenta. RESERVED:
     airspace meaning, kicker, progress rail, maple mark, focus. */
  --accent: #a62675;
  /* verdict inks (identical in both themes) */
  --go: #1f7a3d;
  --nogo: #b3261e;
  --sfoc: #a62675;
  --hold: #22577e;
  /* type */
  --display: 'Barlow Condensed', system-ui, sans-serif;
  --body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, 'SFMono-Regular', 'Cascadia Mono', Menlo, Consolas, monospace;
  /* spacing (4pt) */
  --gutter: 20px;
  /* radii — soft on cards, SHARP on the stamp (ink on paper) */
  --r-card: 14px;
  --r-field: 10px;
  --r-chip: 6px;
  --r-pill: 999px;
  --r-stamp: 3px;
  /* elevation */
  --e1: 0 1px 2px rgba(16, 28, 43, 0.06), 0 1px 1px rgba(16, 28, 43, 0.04);
  --e2: 0 8px 26px -12px rgba(16, 28, 43, 0.3);
  --focus: 0 0 0 3px color-mix(in srgb, var(--accent) 55%, transparent);
  --maxw: 40rem;
}

/* dark theme: explicit attribute … */
:root[data-theme='dark'] {
  --paper: #0c1723;
  --paper-raised: #152534;
  --paper-sunk: #0a131d;
  --ink: #eef1f4;
  --ink-2: #aab7c4;
  --ink-3: #7c8b99;
  --hairline: rgba(238, 241, 244, 0.12);
  --hairline-strong: rgba(238, 241, 244, 0.26);
  --e1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --e2: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
}
/* … or the OS preference when no explicit choice was made */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --paper: #0c1723;
    --paper-raised: #152534;
    --paper-sunk: #0a131d;
    --ink: #eef1f4;
    --ink-2: #aab7c4;
    --ink-3: #7c8b99;
    --hairline: rgba(238, 241, 244, 0.12);
    --hairline-strong: rgba(238, 241, 244, 0.26);
    --e1: 0 1px 2px rgba(0, 0, 0, 0.4);
    --e2: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
  }
}

* { box-sizing: border-box; }
html { height: 100%; }

body {
  margin: 0;
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(4.5rem + env(safe-area-inset-bottom));
}

::selection { background: color-mix(in srgb, var(--accent) 30%, transparent); }

a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: var(--r-field);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 16px;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--gutter) 12px;
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
}

.wordmark { display: flex; align-items: center; gap: 8px; color: var(--ink); min-width: 0; }
.wordmark-text {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(16px, 4.6vw, 21px);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
}
/* GOOSE in the reserved magenta — mirrors the logo lockup */
.wordmark-text em { font-style: normal; color: var(--accent); }
/* the goose-in-airspace-ring mark: traced inline SVG — goose follows the
   ink colour via currentColor, ring stays accent magenta in both themes */
.wordmark-mark { width: 30px; height: 30px; flex: 0 0 auto; }

.version-chip {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  background: none;
  border: 1px solid var(--hairline);
  border-radius: var(--r-chip);
  padding: 4px 7px;
  white-space: nowrap;
  cursor: pointer;
}

/* ---------- update banner ---------- */
.update-banner {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--ink);
  color: var(--paper);
  padding: 9px 16px;
  font-size: 14px;
}
.update-banner[hidden] { display: none; }
.update-banner button {
  font-family: var(--display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--paper);
  color: var(--ink);
  border: 0;
  border-radius: var(--r-pill);
  padding: 5px 14px;
  cursor: pointer;
}

/* ---------- layout ---------- */
.view {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--gutter) 32px;
  outline: none;
}

.boot { color: var(--ink-3); text-align: center; padding: 48px 0; }

/* ---------- first-visit notice ---------- */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--paper-raised);
  border: 1px solid var(--hairline-strong);
  border-left: 3px solid var(--hold);
  border-radius: var(--r-field);
  padding: 10px 12px;
  margin-bottom: 16px;
  box-shadow: var(--e1);
}
.notice p { margin: 0; flex: 1; font-size: 13.5px; line-height: 1.45; color: var(--ink-2); }
.notice a { color: var(--accent); }
.notice-dismiss {
  flex: 0 0 auto;
  font-family: var(--display);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper-sunk);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-chip);
  padding: 6px 10px;
  cursor: pointer;
}

/* ---------- progress rail ---------- */
.rail {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.rail-segs { flex: 1; display: flex; gap: 5px; }
.rail-seg { flex: 1; height: 4px; border-radius: 2px; background: var(--paper-sunk); }
.rail-seg.done { background: var(--accent); }
.rail-seg.current { background: color-mix(in srgb, var(--accent) 45%, var(--paper-sunk)); }
.rail-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  white-space: nowrap;
}

/* ---------- answer trail: a filed flight-plan log ---------- */
.trail {
  margin-bottom: 18px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-field);
  overflow: hidden;
  background: var(--paper-raised);
}
.trail-head {
  display: flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 8px 12px 6px;
  border-bottom: 1px dashed var(--hairline);
}
.trail-restart {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.trail-restart:hover { color: var(--ink); }
.trail-row {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  padding: 9px 12px;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
}
.trail-row:last-child { border-bottom: 0; }
.trail-num { color: var(--ink-3); flex: 0 0 auto; }
.trail-key { color: var(--ink-3); width: 64px; flex: 0 0 64px; letter-spacing: 0.04em; text-transform: uppercase; }
.trail-answer { flex: 1; font-weight: 600; letter-spacing: 0.01em; text-transform: uppercase; }
.trail-edit { color: var(--accent); font-size: 11px; flex: 0 0 auto; }

/* ---------- question ---------- */
.qcard { animation: qIn 0.16s ease-out; }
@keyframes qIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.kicker {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.qcard h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 34px;
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--ink);
  text-wrap: balance;
}
.qhelp { color: var(--ink-2); font-size: 15px; line-height: 1.45; margin: 0 0 20px; }

.options { display: flex; flex-direction: column; gap: 10px; margin: 0; padding: 0; list-style: none; }
.option-btn {
  width: 100%;
  min-height: 60px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  background: var(--paper-raised);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-field);
  padding: 10px 16px;
  cursor: pointer;
  box-shadow: var(--e1);
  color: var(--ink);
  font-family: var(--body);
  transition: transform 0.08s ease, border-color 0.12s;
}
.option-btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.option-btn:active { transform: translateY(0) scale(0.995); }
.option-tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  border: 1px solid var(--hairline);
  border-radius: 5px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 26px;
}
.option-label { display: block; font-size: 17px; font-weight: 500; letter-spacing: 0.005em; }
.option-sub { display: block; color: var(--ink-3); font-size: 13px; margin-top: 2px; }

.value { font-weight: 600; }

/* citations */
.citerow { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 5px; }
.cite {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.02em;
  color: var(--ink-2);
  background: none;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-chip);
  padding: 3px 7px;
  text-decoration: none;
  white-space: nowrap;
}
.cite:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- verdict: the stamp ---------- */
.verdict-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 14px;
}

.stamp {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 18px 0 6px;
  padding: 8px 22px;
}
.stamp.go { padding: 6px 26px; }
.stamp-box {
  position: absolute;
  inset: 0;
  border: 2px solid;
  border-radius: var(--r-stamp);
  transform: rotate(-3deg);
  animation: boxInk 0.5s cubic-bezier(0.2, 1.5, 0.35, 1) both;
}
.stamp-word {
  font-family: var(--display);
  font-weight: 700;
  font-size: 5rem;
  line-height: 0.86;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  animation: stampHit 0.5s cubic-bezier(0.2, 1.5, 0.35, 1) both;
}
.stamp.go .stamp-word { font-size: 7rem; }
.stamp.stop .stamp-word { font-size: 4.7rem; }

.verdict-go { color: var(--go); }
.verdict-stop { color: var(--nogo); }
.verdict-sfoc { color: var(--sfoc); }
.verdict-info { color: var(--hold); }
.stamp.go .stamp-box { border-color: color-mix(in srgb, var(--go) 60%, transparent); }
.stamp.stop .stamp-box { border-color: color-mix(in srgb, var(--nogo) 60%, transparent); }
.stamp.sfoc .stamp-box { border-color: color-mix(in srgb, var(--sfoc) 60%, transparent); }
.stamp.info .stamp-box { border-color: color-mix(in srgb, var(--hold) 60%, transparent); }
.stamp.go .stamp-word { text-shadow: 0.5px 0.5px 0 color-mix(in srgb, var(--go) 30%, transparent); }
.stamp.stop .stamp-word { text-shadow: 0.5px 0.5px 0 color-mix(in srgb, var(--nogo) 30%, transparent); }
.stamp.sfoc .stamp-word { text-shadow: 0.5px 0.5px 0 color-mix(in srgb, var(--sfoc) 30%, transparent); }
.stamp.info .stamp-word { text-shadow: 0.5px 0.5px 0 color-mix(in srgb, var(--hold) 30%, transparent); }

@keyframes stampHit {
  0% { transform: rotate(-3deg) scale(1.9); opacity: 0; filter: blur(1.5px); }
  55% { transform: rotate(-3deg) scale(0.94); opacity: 1; filter: blur(0); }
  72% { transform: rotate(-3deg) scale(1.03); }
  100% { transform: rotate(-3deg) scale(1); }
}
@keyframes boxInk {
  from { opacity: 0; transform: rotate(-3deg) scale(1.25); }
  to { opacity: 1; transform: rotate(-3deg) scale(1); }
}
@keyframes stripSweep {
  from { clip-path: inset(0 100% 0 0); }
  to { clip-path: inset(0 0 0 0); }
}
@keyframes rowIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.verdict-bar { width: 52px; height: 4px; border-radius: 2px; margin: 12px 0 14px; }
.verdict-bar.go { background: var(--go); }
.verdict-bar.stop { background: var(--nogo); }
.verdict-bar.sfoc { background: var(--sfoc); }
.verdict-bar.info { background: var(--hold); }

.clr-strip {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid;
  border-radius: var(--r-pill);
  padding: 8px 16px;
  margin-bottom: 6px;
  animation: stripSweep 0.45s 0.18s both cubic-bezier(0.4, 0, 0.2, 1);
}
.clr-strip.go { color: var(--go); background: color-mix(in srgb, var(--go) 12%, var(--paper-raised)); border-color: color-mix(in srgb, var(--go) 34%, transparent); }
.clr-strip.stop { color: var(--nogo); background: color-mix(in srgb, var(--nogo) 12%, var(--paper-raised)); border-color: color-mix(in srgb, var(--nogo) 34%, transparent); }
.clr-strip.sfoc { color: var(--sfoc); background: color-mix(in srgb, var(--sfoc) 12%, var(--paper-raised)); border-color: color-mix(in srgb, var(--sfoc) 34%, transparent); }
.clr-strip.info { color: var(--hold); background: color-mix(in srgb, var(--hold) 12%, var(--paper-raised)); border-color: color-mix(in srgb, var(--hold) 34%, transparent); }

.wink { font-size: 13px; color: var(--ink-3); font-style: italic; margin-top: 2px; }

.verdict-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.15;
  margin: 16px 0 4px;
  text-wrap: balance;
}
.verdict-summary { font-size: 15px; line-height: 1.45; color: var(--ink-2); margin: 0; max-width: 34rem; }

/* ---------- limit blocks ---------- */
.limits-block {
  width: 100%;
  margin-top: 22px;
  text-align: left;
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
}
.limits-block > h3 {
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 12px;
}
.lim-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--hairline);
  animation: rowIn 0.35s both;
}
.lim-mark { font-size: 15px; line-height: 1.4; flex: 0 0 auto; }
.lim-mark.go { color: var(--go); }
.lim-mark.stop { color: var(--nogo); }
.lim-mark.sfoc { color: var(--sfoc); }
.lim-mark.info { color: var(--hold); }
.lim-mark.accent { color: var(--accent); }
.lim-mark.neutral { color: var(--ink-3); }
.lim-text { flex: 1; font-size: 15px; line-height: 1.4; color: var(--ink); }
.lim-text strong { display: block; }
.lim-cites { display: flex; flex-direction: column; gap: 4px; align-items: flex-end; flex: 0 0 auto; }

.new-preflight {
  margin-top: 22px;
  align-self: stretch;
  min-height: 52px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper-sunk);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-field);
  cursor: pointer;
}

.disclaimer {
  width: 100%;
  margin-top: 24px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-3);
  border-top: 1px dashed var(--hairline);
  padding-top: 12px;
  text-align: left;
}
.disclaimer a { color: var(--accent); }

/* ---------- limits (quick reference) ---------- */
.page-head {
  font-family: var(--display);
  font-weight: 600;
  font-size: 28px;
  letter-spacing: -0.01em;
  margin: 4px 0 16px;
}
.limits-group { margin: 0 0 22px; }
.limits-group > h3 {
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 8px;
}
.limit-card {
  background: var(--paper-raised);
  border: 1px solid var(--hairline);
  border-radius: var(--r-field);
  padding: 12px 14px;
  margin-bottom: 8px;
  box-shadow: var(--e1);
}
.limit-value {
  font-family: var(--display);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.05;
  color: var(--ink);
}
.limit-label { font-weight: 600; font-size: 14px; margin-top: 3px; }
.limit-detail { color: var(--ink-2); font-size: 13.5px; line-height: 1.45; margin-top: 3px; }

/* ---------- checklists ---------- */
.checklist-card {
  background: var(--paper-raised);
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  box-shadow: var(--e1);
  margin-bottom: 12px;
  overflow: hidden;
}
.checklist-card > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 20px;
}
.checklist-card > summary::-webkit-details-marker { display: none; }
.checklist-card > summary .count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
}
.checklist-card[open] > summary { border-bottom: 1px solid var(--hairline); }
.check-items { list-style: none; margin: 0; padding: 4px 0; }
.check-items li { border-bottom: 1px solid var(--hairline); }
.check-items li:last-child { border-bottom: 0; }
.check-items label {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 16px;
  font-size: 15px;
  line-height: 1.4;
  cursor: pointer;
}
.check-items input[type='checkbox'] {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  accent-color: var(--go);
}
.check-items input:checked + span { color: var(--ink-3); text-decoration: line-through; }
.checklist-reset {
  margin: 6px 16px 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: var(--paper-sunk);
  border: 1px solid var(--hairline);
  border-radius: var(--r-chip);
  padding: 5px 10px;
  cursor: pointer;
}

/* ---------- about ---------- */
/* the full logo lockup keeps its light paper — frame it like a printed card */
.about-logo {
  display: block;
  width: 100%;
  height: auto;
  background: #eceff3;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  box-shadow: var(--e1);
  margin: 4px 0 14px;
}
.about p { font-size: 15px; line-height: 1.5; color: var(--ink-2); }
.about a { color: var(--accent); }
.about .card {
  background: var(--paper-raised);
  border: 1px solid var(--hairline);
  border-radius: var(--r-field);
  padding: 12px 16px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-2);
  box-shadow: var(--e1);
}
.about .card h3 {
  margin: 0 0 4px;
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.about .card b { color: var(--ink); }
.about ul { margin: 4px 0; padding-left: 18px; }

/* ---------- tab bar ---------- */
.tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  justify-content: center;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--hairline);
  padding: 8px 6px calc(14px + env(safe-area-inset-bottom));
}
.tab {
  flex: 1;
  max-width: 10rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  color: var(--ink-3);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
/* goose tab icons: traced inline SVGs, currentColor follows theme + state */
.ticon { width: 24px; height: 24px; }
.tab[aria-current='page'] { color: var(--ink); }

/* ---------- motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .qcard, .stamp-word, .stamp-box, .clr-strip, .lim-row { animation: none !important; }
  * { transition: none !important; scroll-behavior: auto !important; }
}