:root {
  --gbam-blue: #175cd3;
  --gbam-soft: #edf3ff;
  --gbam-canvas: #f7f9fc;
  --gbam-line: #dfe5ed;
  --gbam-ink: #172b43;
  --gbam-muted: #637083;
  --gbam-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang HK", "PingFang SC", "Microsoft YaHei", sans-serif;
  --color-brand: #175cd3;
  --color-brand-deep: #134cae;
  --color-brand-soft: #edf3ff;
  --font-sans: var(--gbam-font);
  --shadow-card: 0 1px 3px #172b4305;
  --hdr: 72px;
}

body, .travel-app { font-family: var(--gbam-font); background: var(--gbam-canvas); }
.travel-app { --blue: var(--gbam-blue); --line: var(--gbam-line); color: var(--gbam-ink); background: var(--gbam-canvas); }
h1, h2, h3, h4, .font-display { font-family: inherit; }
.gbam-header { background: #fff; border-bottom: 1px solid var(--gbam-line); }
.gbam-header-inner { display: flex; align-items: center; gap: 24px; width: 100%; max-width: 1440px; min-height: 72px; margin: auto; padding: 12px 24px; }
.gbam-brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; color: var(--gbam-ink); text-decoration: none; }
.gbam-brand-mark { width: 36px; height: 36px; flex: none; color: var(--gbam-blue); }
.gbam-brand-name { display: block; font-size: 18px; font-weight: 750; line-height: 1.2; }
.gbam-brand-region { display: block; margin-top: 3px; color: var(--gbam-muted); font-size: 12px; line-height: 1.3; }
.gbam-language { display: flex; align-items: center; margin-left: auto; }
.gbam-language select { min-height: 44px; width: 120px; max-width: 100%; border: 1px solid var(--gbam-line); border-radius: 12px; background: #fff; padding: 8px 10px; color: var(--gbam-ink); font: inherit; font-size: 14px; }
.gbam-top-nav { display: flex; align-items: center; gap: 4px; }
.gbam-top-nav :is(a, button) { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; border: 0; border-radius: 12px; padding: 8px 14px; background: transparent; color: var(--gbam-muted); font: inherit; font-size: 14px; font-weight: 600; text-decoration: none; white-space: nowrap; }
.gbam-top-nav [aria-current=page] { background: var(--gbam-soft); color: var(--gbam-blue); }
.gbam-mobile-nav { display: none; }
.gbam-regional-app .card, .travel-app .surface, .unified-app .card, .unified-app .journey-card { border-radius: 16px; }
.gbam-regional-app .btn { border-radius: 12px; }
.travel-app :is(button, input, select), .gbam-regional-app :is(button, input, select) { min-height: 44px; }
.travel-app .icon-button, .travel-app .swap-button { width: 44px; height: 44px; flex: none; }
.travel-app .place-input-row input { font-size: 16px; }
.travel-app .place-field > label { font-size: 12px; }
.travel-app .planner-heading { margin-bottom: 16px; }
.travel-app .planner-heading h1 { font-size: 22px; letter-spacing: -.3px; }
.travel-app .search-footer { flex-wrap: wrap; font-size: 12px; }
.travel-app .departure-control summary { display: flex; align-items: center; min-height: 44px; cursor: pointer; }
.travel-app .text-button { min-height: 44px; }
.travel-app .place-results { max-height: min(300px, 40dvh); }
.travel-app .search-fields { grid-template-columns: minmax(0,1fr) 44px minmax(0,1fr); }
.travel-app .sort-control select { min-height: 44px; }
.travel-app .card-prompt { margin-top: 12px; padding-top: 8px; font-size: 12px; }
.travel-app .line-filters input { margin-bottom: 12px; }
.travel-app .line-filters input::placeholder { color: transparent; }
.travel-app .line-detail details summary { min-height: 44px; display: flex; align-items: center; }
.travel-app .stop-list { margin-top: 8px; }
.gbam-regional-app .gba-route-preferences { flex-wrap: wrap; }
.gbam-regional-app .gba-route-preferences > .seg { min-width: 170px; }
.gbam-regional-app .gba-route-metrics { flex-wrap: wrap; }
.gbam-regional-app .gba-route-metrics > div:first-child { flex-wrap: wrap; }
.gbam-regional-app .gba-route-metrics [aria-hidden] { display: none; }
.gbam-regional-app .gba-results-toolbar > button { min-width: 44px; }
.gbam-regional-app .gba-results-toolbar { align-items: center; }

@media (max-width: 767px) {
  .gbam-header-inner { min-height: 72px; gap: 12px; padding: 10px 16px; }
  .gbam-brand-region { max-width: 128px; font-size: 11px; }
  .gbam-language select { width: 112px; font-size: 13px; }
  .gbam-top-nav { display: none; }
  .gbam-mobile-nav { position: fixed; inset: auto 0 0; z-index: 50; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); min-height: calc(64px + env(safe-area-inset-bottom, 0px)); padding-bottom: env(safe-area-inset-bottom, 0px); border-top: 1px solid var(--gbam-line); background: #fff; }
  .gbam-mobile-nav :is(a, button) { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; min-width: 0; min-height: 64px; margin: 0; padding: 8px; border: 0; background: transparent; color: var(--gbam-muted); font: inherit; font-size: 12px; font-weight: 500; text-decoration: none; white-space: nowrap; }
  .gbam-mobile-nav [aria-current=page] { color: var(--gbam-blue); }
  .gbam-mobile-nav svg { width: 21px; height: 21px; }
  .gbam-regional-app > main { padding-bottom: calc(88px + env(safe-area-inset-bottom, 0px)); }
  .travel-app .app-main { padding: 24px 16px calc(88px + env(safe-area-inset-bottom, 0px)) !important; }
  .travel-app .search-fields { grid-template-columns: minmax(0,1fr) 44px; gap: 12px; }
  .travel-app .search-fields .place-field:first-child { grid-area: 1/1; }
  .travel-app .search-fields .place-field:last-child { grid-area: 2/1; }
  .travel-app .swap-button { grid-area: 1/2/3/3; }
  .travel-app .search-panel { padding: 16px; }
  .travel-app .line-filters { padding: 16px; }
  .gbam-regional-app .gba-results-toolbar > button { font-size: 0; gap: 0; padding: 10px; }
}

.unified-app .gbam-mobile-nav { display: none; }
.unified-app .gbam-regional-app > main { padding-bottom: 20px; }
.unified-app .travel-app .app-main { padding-bottom: 24px !important; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.map-legend summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; }
.map-legend:not([open]) > :not(summary) { display: none; }
.map-legend[open] { max-width: calc(100% - 24px); }