:root {
  --ink: #17312e;
  --muted: #60716e;
  --paper: #f5f2e9;
  --surface: #fffdf7;
  --surface-alt: #e8efe8;
  --line: #cbd6d1;
  --forest: #173f3a;
  --forest-light: #28635b;
  --coral: #c9593d;
  --amber-bg: #fff2cc;
  --amber-ink: #674a00;
  --danger-bg: #fde4da;
  --danger-ink: #7a2919;
  --shadow: 0 12px 34px rgba(23, 49, 46, 0.1);
  --radius: 18px;
  --space-1: 0.375rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  font-family: ui-rounded, "Avenir Next", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 90% 0, #d9e8df 0, transparent 32rem), var(--paper); }
button, input { font: inherit; }
button, a, input, summary { -webkit-tap-highlight-color: transparent; }
a { color: var(--forest-light); text-underline-offset: 0.18em; }
button, .button, input, summary { min-height: 44px; }
button, .button { min-width: 44px; }
:focus-visible { outline: 3px solid #e47b48; outline-offset: 3px; }
.hidden { display: none !important; }

.skip-link { position: fixed; z-index: 100; top: 0.5rem; left: 0.5rem; padding: 0.75rem; background: white; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.site-header { position: sticky; z-index: 20; top: 0; display: flex; align-items: center; justify-content: space-between; min-height: calc(60px + env(safe-area-inset-top)); padding: env(safe-area-inset-top) max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left)); color: white; background: rgba(23, 63, 58, 0.96); backdrop-filter: blur(12px); }
.brand { display: inline-flex; min-height: 44px; align-items: center; gap: 0.6rem; color: white; font-weight: 800; letter-spacing: 0.02em; text-decoration: none; }
.brand-mark { display: grid; width: 32px; height: 32px; place-items: center; border: 1px solid rgba(255,255,255,.5); border-radius: 50%; }
.header-actions { display: flex; min-width: 0; align-items: center; gap: 0.5rem; }
.api-version { color: #dcebe7; font-size: 0.75rem; font-weight: 750; white-space: nowrap; }
.api-version::before { content: "API "; }
main { width: min(100%, 74rem); margin: 0 auto; padding: 0 max(1rem, env(safe-area-inset-right)) calc(2rem + env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left)); }

.login-view { display: grid; min-height: calc(100vh - 60px - env(safe-area-inset-top)); place-items: center; padding: 1.25rem 0 2rem; }
.login-card, .state-card { width: min(100%, 29rem); padding: clamp(1.25rem, 5vw, 2.5rem); border: 1px solid var(--line); border-radius: 24px; background: rgba(255,253,247,.96); box-shadow: var(--shadow); }
.eyebrow { margin: 0 0 0.5rem; color: var(--coral); font-size: 0.76rem; font-weight: 850; letter-spacing: 0.12em; text-transform: uppercase; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: clamp(1.8rem, 8vw, 3.3rem); line-height: 1.02; letter-spacing: -0.04em; }
h2 { margin: 0; font-size: clamp(1.45rem, 5vw, 2.1rem); letter-spacing: -0.025em; }
h3 { margin: 0; font-size: 1.05rem; }
.lede { color: var(--muted); font-size: 1.05rem; line-height: 1.55; }
form { display: grid; gap: 0.75rem; margin-top: 1.5rem; }
label { font-weight: 750; }
input { width: 100%; padding: 0.75rem 0.9rem; border: 1px solid #8fa39d; border-radius: 11px; color: var(--ink); background: white; font-size: 16px; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: 0.65rem 1rem; border: 1px solid transparent; border-radius: 11px; cursor: pointer; font-weight: 780; line-height: 1.2; text-align: center; text-decoration: none; }
.button:disabled { cursor: wait; opacity: 0.65; }
.button-primary { color: white; background: var(--forest); }
.button-primary:hover { background: var(--forest-light); }
.button-secondary { border-color: var(--forest); color: var(--forest); background: transparent; }
.button-quiet { color: white; background: transparent; border-color: rgba(255,255,255,.5); }
.status { min-height: 1.5rem; margin: 0.75rem 0; color: var(--danger-ink); font-weight: 700; }
.admin-entry { margin-top: 1.4rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.admin-entry p { margin: 0 0 0.75rem; line-height: 1.45; }
.local-note { margin-top: 0.6rem !important; color: var(--muted); font-size: 0.82rem; }
.state-card { margin: 15vh auto; text-align: center; }
.spinner { display: inline-block; width: 2rem; height: 2rem; margin-bottom: 1rem; border: 3px solid var(--line); border-top-color: var(--coral); border-radius: 50%; animation: spin .8s linear infinite; }

.app-shell { padding-top: 1rem; }
.trip-hero { position: relative; overflow: hidden; padding: clamp(1.4rem, 6vw, 3.2rem); border-radius: var(--radius); color: white; background: linear-gradient(135deg, #173f3a, #28635b); box-shadow: var(--shadow); }
.trip-hero::after { position: absolute; right: -3.5rem; bottom: -5rem; width: 13rem; height: 13rem; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; content: ""; }
.trip-hero h1 { max-width: 18ch; }
.trip-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; margin: 1rem 0 0; color: #dcebe7; font-weight: 650; }
.warnings { display: grid; gap: 0.75rem; margin: 1rem 0; }
.warning { padding: 1rem; border-left: 5px solid #d99b16; border-radius: 10px; color: var(--amber-ink); background: var(--amber-bg); }
.warning[data-level="critical"] { border-color: var(--coral); color: var(--danger-ink); background: var(--danger-bg); }
.warning h2 { font-size: 1rem; letter-spacing: 0; }
.warning p { margin: 0.35rem 0 0; line-height: 1.45; }
.today-card { padding: 1.25rem; border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.today-card h2 { margin-bottom: 0.8rem; }
.today-label { margin: 0 0 0.25rem; color: var(--coral); font-weight: 800; }
.today-main { margin: 0; font-size: 1.25rem; font-weight: 850; }
.today-detail { margin-bottom: 0; color: var(--muted); line-height: 1.5; }
.section-nav { display: flex; gap: 0.5rem; margin: 1rem -1rem; padding: 0.35rem 1rem; overflow-x: auto; scrollbar-width: none; }
.section-nav a { display: inline-flex; min-height: 44px; flex: 0 0 auto; align-items: center; padding: 0.55rem 0.8rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); background: var(--surface); font-weight: 700; text-decoration: none; }
.content-section { margin-top: 1rem; padding: 1.15rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.section-intro { margin: 0.35rem 0 1rem; color: var(--muted); line-height: 1.45; }
.itinerary-list { display: grid; gap: 0.7rem; }
details { border: 1px solid var(--line); border-radius: 12px; background: white; }
summary { display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: 0.75rem; padding: 0.75rem; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.4rem; font-weight: 400; }
details[open] summary::after { content: "−"; }
.date-badge { display: grid; min-width: 3rem; min-height: 3rem; place-items: center; padding: 0.25rem; border-radius: 10px; color: white; background: var(--forest); font-size: 0.8rem; font-weight: 850; text-align: center; }
.leg-title { display: block; font-weight: 800; }
.leg-subtitle { display: block; margin-top: 0.2rem; color: var(--muted); font-size: 0.82rem; }
.leg-body { padding: 0 0.85rem 1rem; }
.fact-grid { display: grid; gap: 0.5rem; margin: 0; }
.fact { padding: 0.65rem; border-radius: 8px; background: var(--surface-alt); }
.fact dt { color: var(--muted); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }
.fact dd { margin: 0.2rem 0 0; line-height: 1.4; }
.stay-card { margin-top: 0.8rem; padding: 0.8rem; border: 1px dashed #92aaa3; border-radius: 10px; }
.stay-card address { margin-top: 0.35rem; font-style: normal; line-height: 1.4; }
.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.7rem; }
.actions .button { flex: 1 1 8rem; }
.stop-list { margin: 0.8rem 0 0; padding-left: 1.2rem; }
.stop-list li { margin-top: 0.6rem; line-height: 1.4; }
.checklist { display: grid; gap: 0.5rem; }
.check-item { display: grid; grid-template-columns: 44px minmax(0,1fr); align-items: center; gap: 0.4rem; min-height: 52px; padding: 0.3rem 0.5rem; border-radius: 9px; }
.check-item:hover { background: var(--surface-alt); }
.check-item input { width: 44px; height: 44px; margin: auto; accent-color: var(--forest); }
.check-item label { line-height: 1.35; }
.check-group { display: block; color: var(--coral); font-size: 0.72rem; letter-spacing: .06em; text-transform: uppercase; }
.card-list { display: grid; gap: 0.7rem; margin-top: 1rem; }
.info-card { padding: 0.85rem; border-radius: 10px; background: var(--surface-alt); }
.info-card p { margin: 0.35rem 0 0; color: #40534f; line-height: 1.45; }
.source-links { display: flex; flex-wrap: wrap; gap: 0.25rem 0.8rem; margin: 0.55rem 0 0; padding: 0; list-style: none; }
.source-links a { display: inline-flex; min-height: 44px; align-items: center; font-size: 0.86rem; font-weight: 750; }
.total-list { display: grid; gap: 0; margin: 1rem 0 0; }
.total-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 0.75rem; padding: 0.8rem 0; border-top: 1px solid var(--line); }
.total-row dt { font-weight: 750; }
.total-row dd { margin: 0; font-weight: 850; text-align: right; }
.total-note { grid-column: 1 / -1; color: var(--muted); font-size: 0.82rem; }
.provenance-list { display: grid; margin: 1rem 0 0; }
.provenance-row { display: grid; gap: 0.3rem; padding: 0.85rem 0; border-top: 1px solid var(--line); }
.provenance-row dt { font-weight: 800; }
.provenance-row dd { display: grid; gap: 0.2rem; margin: 0; color: var(--muted); line-height: 1.45; }
.provenance-row strong { color: var(--forest); }
.roadbook-footer { padding: 2rem 0; color: var(--muted); font-size: 0.85rem; line-height: 1.5; text-align: center; }

@media (min-width: 680px) {
  main { padding-inline: 1.5rem; }
  .app-shell { padding-top: 1.5rem; }
  .warnings { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .fact-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .summary-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
  .section-nav { margin-inline: 0; padding-inline: 0; }
}

@media (max-width: 679px) {
  .site-header { min-height: calc(56px + env(safe-area-inset-top)); padding-top: calc(0.65rem + env(safe-area-inset-top)); }
  .brand { gap: 0.5rem; font-size: 0.98rem; }
  .brand-mark { width: 28px; height: 28px; }
  main { padding-inline: max(0.8rem, env(safe-area-inset-left)); }
  .login-view { min-height: auto; padding: 1rem 0 1.25rem; }
  .login-card, .state-card { border-radius: 20px; }
  .trip-hero { padding: 1.25rem; }
  .trip-hero::after { right: -5rem; bottom: -6rem; width: 10rem; height: 10rem; }
  .trip-meta { gap: 0.4rem 0.75rem; font-size: 0.95rem; }
  .warnings { gap: 0.65rem; }
  .warning { padding: 0.9rem; }
  .today-card { padding: 1rem; }
  .section-nav { margin: 0.9rem -0.8rem 0; padding: 0.25rem 0.8rem 0.35rem; }
  .section-nav a { padding-inline: 0.75rem; font-size: 0.95rem; }
  .content-section { padding: 1rem; }
  .leg-body { padding-inline: 0.7rem; }
  .fact-grid { grid-template-columns: 1fr; }
  .actions .button { flex-basis: 100%; }
  .check-item { grid-template-columns: 44px minmax(0,1fr); padding-inline: 0.15rem; }
  .card-list { gap: 0.6rem; }
  .summary-grid { display: grid; gap: 0.9rem; }
  .total-row { grid-template-columns: minmax(0,1fr); gap: 0.35rem; }
  .total-row dd { text-align: left; }
  .total-note { grid-column: auto; }
  .roadbook-footer { padding-top: 1.5rem; }
}

@media (max-width: 420px) {
  .api-version-release,
  .api-version-separator { display: none; }
}

@media (min-width: 1080px) {
  main { width: min(100%, 92rem); }
  .app-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(22rem, 0.95fr);
    gap: 1rem 1.15rem;
    align-items: start;
  }

  .trip-hero,
  .warnings,
  .today-card,
  .section-nav,
  #budget,
  #provenance,
  .roadbook-footer {
    grid-column: 1 / -1;
  }

  #itinerary,
  #checklist {
    grid-column: 1;
  }

  .summary-grid {
    grid-column: 2;
    grid-row: 5 / span 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
    align-self: start;
  }

  .content-section { padding: 1.35rem; }
  .warnings { grid-template-columns: repeat(4, minmax(0,1fr)); }
  .itinerary-list { gap: 0.8rem; }
  .itinerary-list details:first-child { grid-column: 1 / -1; }
  .itinerary-list details:not(:first-child) summary { min-height: 84px; }
  .fact-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .summary-grid .content-section { margin-top: 0; }
  #budget { margin-top: 0; }
  #provenance { margin-top: 0; }
  .provenance-row { grid-template-columns: minmax(10rem, 0.35fr) minmax(0, 1fr); gap: 1.25rem; }
  .total-row { padding: 0.9rem 0; }
  .roadbook-footer { padding-top: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

@media print {
  :root { --paper: white; --surface: white; }
  @page { margin: 12mm; }
  body { background: white; color: black; font-size: 10pt; }
  main { width: auto; max-width: none; padding: 0; }
  .site-header, .print-hidden, .warnings .warning:not([data-level="critical"]):not([data-print="true"]), .actions, .spinner { display: none !important; }
  .app-shell { display: block !important; padding: 0; }
  .trip-hero { padding: 0 0 8mm; border-radius: 0; color: black; background: white; box-shadow: none; }
  .trip-meta { color: #333; }
  .warning, .today-card, .content-section { break-inside: avoid; border: 1px solid #777; box-shadow: none; }
  details { break-inside: avoid; }
  details > * { display: block !important; }
  summary::after { display: none; }
  .date-badge { color: black; background: #eee; }
  .check-item input { appearance: none; border: 1px solid #333; }
  .roadbook-footer { padding-bottom: 0; }
}