/*
  cardboard.ing — the app's palette (App/DesignSystem/Paper.swift): kraft
  stock and ink on a dark table, the boarding pass printed on itinerary blue.
  No web fonts: the system's rounded and monospaced faces, as in the app.
*/

:root {
  --ground: #161412;        /* Paper.ground */
  --ground-ink: #cac2b4;    /* Paper.groundInk */
  --ground-faded: #8b857a;  /* Paper.groundInkFaded */
  --board-edge: #23201d;    /* Paper.boardEdge */
  --stock: #e9e0ce;         /* Paper.stock */
  --ink: #26211b;           /* Paper.ink */
  --ink-faded: #605749;     /* Paper.inkFaded */
  --itinerary: #d3dce5;     /* Paper.itinerary */
  --itinerary-ink: #1b232e; /* Paper.itineraryInk */
  --itinerary-faded: #535f6f;
  --stamp: #b4322e;         /* Paper.stamp */
  --ok: #2f7a4f;
  --warn: #b7791f;
  --rounded: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ground-ink);
  font: 17px/1.5 var(--rounded);
}
a { color: inherit; }
code { font-family: var(--mono); font-size: 0.92em; }
.faded { color: var(--ground-faded); }

.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) 32px max(20px, env(safe-area-inset-left));
}

.masthead a { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.masthead img { border-radius: 10px; }
.masthead .name { font-weight: 800; font-size: 20px; letter-spacing: 0.02em; text-transform: uppercase; }

.display {
  font-weight: 900;
  font-size: clamp(36px, 7vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin: 0 0 16px;
  color: var(--stock);
}
.accent { color: var(--ground-ink); }
.eyebrow {
  font: 700 12px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ground-faded);
  margin-bottom: 14px;
}
.sub { font-size: 19px; max-width: 34em; margin: 0 0 20px; }

.hero { padding: 48px 0 36px; }

.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 10px; }
.cta-note { font-size: 14px; color: var(--ground-faded); margin: 0; }
.btn {
  display: inline-block;
  border: 0;
  border-radius: 999px;
  padding: 14px 26px;
  font: 800 16px/1.2 var(--rounded);
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary { background: var(--stock); color: var(--ink); }
.btn-ghost { background: transparent; color: var(--stock); box-shadow: inset 0 0 0 2px var(--board-edge), inset 0 0 0 3px #3a352f; }
.btn[aria-disabled="true"] { background: var(--board-edge); color: var(--ground-faded); cursor: default; box-shadow: none; }

.shots {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 12px 0 40px;
}
.shots figure { margin: 0; }
.shots img { width: 100%; height: auto; display: block; border-radius: 18px; }
@media (max-width: 720px) {
  .shots { grid-template-columns: repeat(4, 72%); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; }
  .shots figure { scroll-snap-align: start; }
}

.points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 40px;
}
.points div {
  background: var(--stock);
  color: var(--ink-faded);
  border-radius: 14px;
  padding: 18px 20px;
  font-size: 16px;
}
.points strong { display: block; color: var(--ink); font-size: 18px; font-weight: 900; text-transform: uppercase; letter-spacing: 0.02em; margin-bottom: 4px; }
@media (max-width: 620px) { .points { grid-template-columns: 1fr; } }

.share-note { border-top: 1px dashed #3a352f; padding-top: 24px; margin-bottom: 24px; }
.share-note h2, .doc h2 { font-weight: 900; text-transform: uppercase; font-size: 18px; letter-spacing: 0.04em; color: var(--stock); margin: 28px 0 8px; }

/* The flight page: a boarding pass on itinerary stock. */
.flight { padding: 40px 0 24px; max-width: 620px; }
.pass {
  background: var(--itinerary);
  color: var(--itinerary-ink);
  border-radius: 16px;
  padding: 18px 20px 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.pass-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-family: var(--mono); font-size: 14px; }
.pass-head strong { font-size: 16px; }
.pass-head .faded { color: var(--itinerary-faded); }
.chip { font: 800 11px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; padding: 6px 9px; border-radius: 999px; color: #fff; white-space: nowrap; }
.chip-ok { background: var(--ok); }
.chip-warn { background: var(--warn); }
.chip-bad { background: var(--stamp); }
.pass-route { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: start; gap: 8px; margin: 16px 0 6px; }
.end-right { text-align: right; }
.code { font-weight: 900; font-size: clamp(34px, 11vw, 56px); line-height: 1; letter-spacing: -0.01em; }
.verb { font: 700 11px/1.2 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--itinerary-faded); margin-top: 10px; }
.time { font: 800 clamp(16px, 5vw, 20px)/1.3 var(--mono); }
.time s { display: block; font-weight: 500; font-size: 13px; line-height: 1.2; color: var(--itinerary-faded); }
.time s:empty { display: none; }
.place { font-size: 14px; color: var(--itinerary-faded); }
.line { padding-top: 14px; color: var(--itinerary-faded); font-size: 22px; }
.pass-foot { border-top: 1px dashed rgba(27, 35, 46, 0.3); margin-top: 12px; padding-top: 10px; font-size: 15px; }
.pass-foot .label { font: 700 11px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--itinerary-faded); margin-right: 6px; }
.note { font-size: 14px; color: var(--ground-faded); margin: 12px 0 0; }

.doc { padding: 36px 0 16px; max-width: 680px; }
.doc .display { font-size: clamp(34px, 6vw, 52px); }
.doc ul { padding-left: 20px; }
.doc li { margin-bottom: 8px; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--board-edge);
  padding-top: 18px;
  margin-top: 24px;
  font-size: 14px;
  color: var(--ground-faded);
}
footer a { text-decoration: none; }
footer a:hover { text-decoration: underline; }

.forward {
  position: fixed;
  left: 50%;
  bottom: max(18px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--stock);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 12px 10px 16px;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}
.forward button { border: 0; border-radius: 999px; background: var(--ink); color: var(--stock); font: 700 14px var(--rounded); padding: 8px 14px; }
.spin { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--ink-faded); border-top-color: transparent; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation: none; } }