/* one trip — prototype presentation shell + the app's own design system.
 *
 * Two systems live on this page, deliberately:
 *   1. The SHELL (topbar, notes panel) follows the saulera system: stone/ocean,
 *      0-radius, flat. It frames the exhibit.
 *   2. The APP inside the phone is its own product ("one trip") with its own
 *      tokens: platform type stack, soft radii, blue for rail (the core),
 *      coral for the new verticals. The contrast is the point — the portfolio
 *      frames the work; the work has its own voice.
 */

/* ---------------------------------------------------------------- shell */

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-body, "Montserrat Ace", sans-serif);
}

.ot-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 40;
}

.ot-topbar a { text-decoration: none; }

/* back to the portfolio — Depot tertiary button: surface fill, border,
   ink chevron; hover bg + pressed border per Trainline's button tokens */
.ot-topbar .back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 50%;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  color: var(--color-fg);
  transition: background 160ms ease;
}
.ot-topbar .back svg { width: 24px; height: 24px; display: block; }
.ot-topbar .back:hover { background: var(--color-bg); }
.ot-topbar .back:active { background: var(--color-border); }

.ot-topbar .title {
  font-family: var(--font-display, sans-serif);
  color: var(--color-fg-muted);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
}

.ot-topbar .btn-log {
  font-family: var(--font-display, sans-serif);
  background: var(--color-accent);
  color: var(--color-accent-fg);
  padding: 10px 18px;
  font-size: 14px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.ot-topbar .btn-log:hover { background: var(--color-bg-inverse); color: var(--color-fg-on-inverse-strong); }

.ot-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  gap: var(--spacing-2xl);
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-3xl);
  align-items: start;
}

.ot-phone-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.ot-caption {
  color: var(--color-fg-muted);
  font-size: 14px;
  margin: 0;
  text-align: center;
}

/* interaction cue — the phone is working software; say so.
   Accent chip (fill-only rule), accent-fg text; bounces toward the phone. */
.ot-cue {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent);
  color: var(--color-accent-fg);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 10px 16px;
  animation: ot-cue-bounce 2s ease-in-out infinite;
}
.ot-cue .arr { font-size: 15px; }
@keyframes ot-cue-bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(9px); }
  60% { transform: translateY(4px); }
}
@media (prefers-reduced-motion: reduce) {
  .ot-cue { animation: none; }
}

/* the device — depicting hardware, so the bezel keeps its curves */
.ot-phone {
  width: min(392px, 94vw);
  background: #11141C;
  border-radius: 54px;
  padding: 12px;
  box-shadow: 0 24px 60px rgba(38, 70, 83, 0.28);
}

.ot-screen {
  border-radius: 43px;
  overflow: hidden;
  height: min(800px, 80dvh);
  min-height: 620px;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* notes panel */
.ot-notes {
  position: sticky;
  top: 92px;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
}

.ot-notes-head {
  font-family: var(--font-display, sans-serif);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-fg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
  margin-bottom: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.ot-notes-head .screen-name { color: var(--color-fg-muted); letter-spacing: 0.08em; }

#ot-notes-body { transition: opacity 0.18s ease; }
#ot-notes-body.fading { opacity: 0; }

#ot-notes-body p {
  font-size: 15px;
  line-height: 1.55;
  margin: 0 0 var(--spacing-md);
  color: var(--color-fg);
}

#ot-notes-body p .k {
  font-family: var(--font-display, sans-serif);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-fg-muted);
  display: block;
  margin-bottom: 2px;
}

.ot-notes-link {
  font-family: var(--font-display, sans-serif);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--color-fg);
  text-decoration: none;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
}
.ot-notes-link:hover { color: var(--color-accent-secondary); }

/* mobile: notes behind a floating button */
.ot-notes-fab {
  display: none;
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  background: var(--color-bg-inverse);
  color: var(--color-fg-on-inverse-strong, #F4F1EA);
  border: 0;
  font-family: var(--font-display, sans-serif);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 13px;
  padding: 14px 20px;
  cursor: pointer;
}

@media (max-width: 1023px) {
  .ot-stage { grid-template-columns: 1fr; padding: var(--spacing-lg) var(--spacing-md) 96px; }
  .ot-notes {
    position: fixed;
    inset: auto 0 0 0;
    top: auto;
    max-height: 70dvh;
    overflow-y: auto;
    transform: translateY(105%);
    transition: transform 0.25s ease;
    z-index: 55;
    box-shadow: 0 -12px 40px rgba(38, 70, 83, 0.25);
  }
  .ot-notes.open { transform: translateY(0); }
  .ot-notes-fab { display: block; }
  .ot-topbar { padding: var(--spacing-sm) var(--spacing-md); }
  .ot-topbar .title { display: none; }
}

/* ------------------------------------------------------------- the app */

.ot-screen {
  /* one trip's own tokens — a product inside the exhibit */
  --t-ink: #1C2437;
  --t-ink-soft: #626B7D;
  --t-line: #E5E7EE;
  --t-bg: #F5F6F9;
  --t-card: #FFFFFF;
  --t-rail: #2E4FD6;        /* blue = the core rail journey */
  --t-rail-soft: #E8EDFF;
  --t-new: #E4572E;         /* coral = the new verticals */
  --t-new-soft: #FDEEE8;
  --t-good: #0E8A63;
  --t-r: 14px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--t-bg);
  color: var(--t-ink);
}

.ot-screen * { -webkit-tap-highlight-color: transparent; }

.ot-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 28px 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--t-ink);
  background: var(--t-bg);
}
.ot-status .pins { display: flex; gap: 5px; }
.ot-status .pins span {
  width: 16px; height: 10px; border-radius: 3px; background: var(--t-ink); opacity: 0.85;
}
.ot-status .pins span:nth-child(2) { opacity: 0.35; width: 22px; }

.ot-appbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 10px;
  background: var(--t-bg);
}

.ot-back {
  border: 0;
  background: var(--t-card);
  color: var(--t-ink);
  width: 36px; height: 36px;
  border-radius: 50%;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(28, 36, 55, 0.10);
  flex: none;
}
.ot-back:disabled { visibility: hidden; }

.ot-appbar .t { font-size: 16px; font-weight: 700; flex: 1; }

.ot-steps { display: flex; gap: 5px; }
.ot-steps i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--t-line);
}
.ot-steps i.on { background: var(--t-rail); }
.ot-steps i.new { background: var(--t-new); }

.ot-body {
  flex: 1;
  overflow-y: auto;
  padding: 6px 16px 20px;
  scrollbar-width: none;
}
.ot-body::-webkit-scrollbar { display: none; }

.ot-body.anim { animation: ot-slide 0.26s ease; }
@keyframes ot-slide {
  from { transform: translateX(26px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}
.ot-body.anim-back { animation: ot-slide-b 0.26s ease; }
@keyframes ot-slide-b {
  from { transform: translateX(-26px); opacity: 0; }
  to   { transform: translateX(0);     opacity: 1; }
}

.ot-foot {
  padding: 12px 16px calc(14px + env(safe-area-inset-bottom, 8px));
  background: var(--t-card);
  border-top: 1px solid var(--t-line);
  display: flex;
  align-items: center;
  gap: 12px;
}
.ot-foot .sum { flex: 1; }
.ot-foot .sum .l { font-size: 12px; color: var(--t-ink-soft); }
.ot-foot .sum .v { font-size: 20px; font-weight: 800; }

/* atoms */
.ot-h1 { font-size: 28px; font-weight: 800; margin: 10px 4px 2px; letter-spacing: -0.02em; }
.ot-sub { font-size: 14px; color: var(--t-ink-soft); margin: 0 4px 14px; line-height: 1.4; }

.ot-card {
  background: var(--t-card);
  border-radius: var(--t-r);
  box-shadow: 0 1px 3px rgba(28, 36, 55, 0.08);
  padding: 16px;
  margin-bottom: 12px;
}

.ot-btn {
  display: block;
  width: 100%;
  border: 0;
  border-radius: var(--t-r);
  background: var(--t-rail);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  padding: 16px;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease;
}
.ot-btn:active { transform: scale(0.985); }
.ot-btn.dark { background: #0B0E16; }
.ot-btn.ghost {
  background: transparent;
  color: var(--t-ink-soft);
  font-weight: 600;
  box-shadow: none;
  padding: 12px;
}
.ot-btn.ghost:hover { color: var(--t-ink); }

.ot-chip {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--t-rail-soft);
  color: var(--t-rail);
}
.ot-chip.new { background: var(--t-new-soft); color: var(--t-new); }
.ot-chip.good { background: #E2F5EE; color: var(--t-good); }
.ot-chip.plain { background: #EEF0F4; color: var(--t-ink-soft); }

/* search screen */
.ot-field {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 2px;
  gap: 10px;
}
.ot-field + .ot-field { border-top: 1px solid var(--t-line); }
.ot-field .l { font-size: 12px; color: var(--t-ink-soft); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.ot-field .v { font-size: 16px; font-weight: 700; text-align: right; }
.ot-field .v small { display: block; font-size: 12px; color: var(--t-ink-soft); font-weight: 600; }

/* train result rows */
.ot-train {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  border: 2px solid transparent;
  background: var(--t-card);
  border-radius: var(--t-r);
  box-shadow: 0 1px 3px rgba(28, 36, 55, 0.08);
  padding: 14px 16px;
  margin-bottom: 10px;
  cursor: pointer;
  font-family: inherit;
  color: var(--t-ink);
  transition: border-color 0.12s ease;
}
.ot-train:hover { border-color: var(--t-rail); }
.ot-train .times { font-size: 18px; font-weight: 800; letter-spacing: -0.01em; }
.ot-train .times span { color: var(--t-ink-soft); font-weight: 500; font-size: 14px; }
.ot-train .meta { font-size: 12.5px; color: var(--t-ink-soft); margin-top: 3px; }
.ot-train .price { margin-left: auto; text-align: right; }
.ot-train .price .p { font-size: 18px; font-weight: 800; }
.ot-train .price .f { font-size: 11px; color: var(--t-ink-soft); }

/* the trip spine */
.ot-spine { position: relative; padding-left: 26px; margin-top: 6px; }
.ot-spine::before {
  content: "";
  position: absolute;
  left: 8px; top: 14px; bottom: 14px;
  width: 2px;
  background: var(--t-line);
}
.ot-node { position: relative; margin-bottom: 14px; }
.ot-node::before {
  content: "";
  position: absolute;
  left: -24px; top: 16px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--t-rail);
  border: 2.5px solid var(--t-bg);
  box-shadow: 0 0 0 2px var(--t-rail);
}
.ot-node.new::before { background: var(--t-new); box-shadow: 0 0 0 2px var(--t-new); }
.ot-node.probe::before { background: var(--t-bg); box-shadow: 0 0 0 2px var(--t-new); }

.ot-node .ot-card { margin-bottom: 0; }
.ot-node .head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.ot-node .head .d { font-size: 12px; font-weight: 700; color: var(--t-ink-soft); text-transform: uppercase; letter-spacing: 0.05em; }
.ot-node .head a { font-size: 13px; font-weight: 700; color: var(--t-rail); text-decoration: none; cursor: pointer; }
.ot-node .big { font-size: 17px; font-weight: 800; margin-top: 4px; }
.ot-node .sub2 { font-size: 13px; color: var(--t-ink-soft); margin-top: 2px; }

.ot-node.probe .ot-card {
  box-shadow: none;
  border: 1.5px dashed var(--t-new);
  background: transparent;
  cursor: pointer;
}

/* hotel rows */
.ot-hotel {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--t-card);
  border: 2px solid var(--t-line);
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: 8px;
  cursor: pointer;
  font-family: inherit;
  color: var(--t-ink);
  transition: border-color 0.12s ease;
}
.ot-hotel:hover { border-color: var(--t-new); }
.ot-hotel.sel { border-color: var(--t-new); background: var(--t-new-soft); }
.ot-hotel .r1 { display: flex; justify-content: space-between; font-weight: 800; font-size: 15px; gap: 8px; }
.ot-hotel .r2 { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--t-ink-soft); margin-top: 3px; gap: 8px; }
.ot-hotel .r3 { margin-top: 6px; }

.ot-stars { color: var(--t-new); letter-spacing: 1px; font-size: 12px; }

/* toggle (trip cover) */
.ot-toggle-row { display: flex; align-items: center; gap: 12px; }
.ot-toggle-row .tx { flex: 1; }
.ot-toggle-row .tx .t1 { font-weight: 800; font-size: 15px; }
.ot-toggle-row .tx .t2 { font-size: 13px; color: var(--t-ink-soft); line-height: 1.45; margin-top: 3px; }
.ot-switch {
  position: relative;
  width: 52px; height: 32px;
  border-radius: 999px;
  background: var(--t-line);
  border: 0;
  cursor: pointer;
  transition: background 0.15s ease;
  flex: none;
}
.ot-switch::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25);
  transition: transform 0.15s ease;
}
.ot-switch.on { background: var(--t-good); }
.ot-switch.on::after { transform: translateX(20px); }

/* summary + confirmation */
.ot-row { display: flex; justify-content: space-between; font-size: 15px; padding: 9px 0; gap: 10px; }
.ot-row + .ot-row { border-top: 1px solid var(--t-line); }
.ot-row .a { color: var(--t-ink-soft); }
.ot-row .b { font-weight: 700; text-align: right; }
.ot-row.total .a, .ot-row.total .b { font-weight: 800; font-size: 17px; color: var(--t-ink); }

.ot-check {
  width: 74px; height: 74px;
  border-radius: 50%;
  background: var(--t-good);
  color: #fff;
  font-size: 34px;
  display: flex; align-items: center; justify-content: center;
  margin: 26px auto 12px;
}

.ot-center { text-align: center; }
.ot-ref { font-size: 13px; color: var(--t-ink-soft); margin-bottom: 16px; }
.ot-ref b { color: var(--t-ink); letter-spacing: 0.08em; }

.ot-it { display: flex; gap: 12px; padding: 12px 0; align-items: flex-start; }
.ot-it + .ot-it { border-top: 1px solid var(--t-line); }
.ot-it .ic {
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: var(--t-rail);
  background: var(--t-rail-soft);
}
.ot-it.new .ic { color: var(--t-new); }
.ot-it.new .ic { background: var(--t-new-soft); }
.ot-it .t1 { font-weight: 700; font-size: 14.5px; }
.ot-it .t2 { font-size: 12.5px; color: var(--t-ink-soft); margin-top: 2px; }

.ot-note { font-size: 12px; color: var(--t-ink-soft); text-align: center; margin-top: 12px; line-height: 1.5; }
.ot-note a { color: var(--t-rail); font-weight: 600; text-decoration: none; }

/* bottom sheet (car hire fake door) */
.ot-sheet-wrap {
  position: absolute;
  inset: 0;
  background: rgba(16, 19, 27, 0.45);
  display: flex;
  align-items: flex-end;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 20;
}
.ot-sheet-wrap.open { opacity: 1; pointer-events: auto; }
.ot-sheet {
  background: var(--t-card);
  border-radius: 22px 22px 0 0;
  padding: 20px 20px 28px;
  width: 100%;
  transform: translateY(30px);
  transition: transform 0.22s ease;
}
.ot-sheet-wrap.open .ot-sheet { transform: translateY(0); }
.ot-sheet .grab { width: 40px; height: 4px; border-radius: 2px; background: var(--t-line); margin: 0 auto 14px; }
.ot-sheet h3 { margin: 8px 0 8px; font-size: 19px; }
.ot-sheet p { font-size: 14px; color: var(--t-ink-soft); line-height: 1.5; margin: 0 0 16px; }

/* toast */
.ot-toast {
  position: absolute;
  left: 50%; bottom: 96px;
  transform: translateX(-50%) translateY(8px);
  background: #0B0E16;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 999px;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  z-index: 30;
  white-space: nowrap;
}
.ot-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ------------------------------------------------- a11y + shared additions */

/* in-flow actions that read as links but are real buttons (keyboard-reachable) */
.ot-linklike {
  border: 0;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
  font-weight: 600;
  color: var(--t-rail);
  cursor: pointer;
}
.ot-node .head .ot-linklike { font-size: 13px; font-weight: 700; }

/* visible focus for keyboard users — shell and app */
:focus-visible {
  outline: 3px solid var(--color-accent-secondary, #2A7E8F);
  outline-offset: 2px;
}
.ot-screen button:focus-visible,
.ot-screen a:focus-visible {
  outline: 3px solid var(--t-rail);
  outline-offset: 2px;
}

/* coral as TEXT uses the darker tone (WCAG AA on soft grounds);
   coral as GRAPHIC (borders, dots, fills) keeps --t-new */
.ot-screen { --t-new-text: #C7431F; --t-alert: #B3261E; --t-alert-soft: #FCEBE9; }
.ot-chip.new { color: var(--t-new-text); }
.ot-stars { color: var(--t-new-text); }

/* alert tone (disruption surfaces) */
.ot-chip.alert { background: var(--t-alert-soft); color: var(--t-alert); }
.ot-alert-card {
  border-left: 4px solid var(--t-alert);
  background: var(--t-card);
  border-radius: var(--t-r);
  box-shadow: 0 1px 3px rgba(28, 36, 55, 0.08);
  padding: 16px;
  margin-bottom: 12px;
}

/* respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
  .ot-body.anim, .ot-body.anim-back { animation: none; }
  .ot-sheet, .ot-sheet-wrap, .ot-switch::after, .ot-notes, .ot-toast, .ot-btn { transition: none; }
}