:root {
  --brisbane: #2f6fed;
  --goldcoast: #e8871e;
  --sydney: #0f9b8e;
  --melbourne: #7c4dff;
  --neutral: #9aa1ad;

  --confirmed: #1a9f5a;
  --tbd: #d64545;
  --candidate: #96650a;
  --action: #6b7280;

  --bg: #f5f5f7;
  --card-bg: #ffffff;
  --text: #1f2430;
  --text-muted: #6b7280;
  --border: #e5e7eb;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

a, button, .checklist-item, .day-card, .attraction {
  transition: opacity 0.15s ease, transform 0.15s ease;
}
a:active, .day-card:active, .trip-card:active {
  opacity: 0.7;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--text);
  color: #fff;
  padding: calc(12px + env(safe-area-inset-top)) 16px 12px;
}

.app-header h1 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}

.app-header .trip-range {
  font-size: 12px;
  opacity: 0.7;
  margin-top: 2px;
}

.nav-tabs {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 2px;
}

.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tabs a {
  flex: 0 0 auto;
  font-size: 13px;
  background: rgba(255,255,255,0.12);
  padding: 7px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.nav-tabs a.active {
  background: #fff;
  color: var(--text);
  font-weight: 700;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom));
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 24px 0 10px;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ---- leg grouping on index page ---- */
.leg-group {
  margin-bottom: 4px;
}

.leg-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 20px 0 8px;
  padding-left: 2px;
}

.leg-header .leg-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.leg-header .leg-name {
  font-size: 15px;
  font-weight: 700;
}

.leg-header .leg-meta {
  font-size: 12px;
  color: var(--text-muted);
}

.dot-brisbane { background: var(--brisbane); }
.dot-goldcoast { background: var(--goldcoast); }
.dot-sydney { background: var(--sydney); }
.dot-melbourne { background: var(--melbourne); }
.dot-neutral { background: var(--neutral); }

.day-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 8px;
  box-shadow: var(--shadow);
}

.day-card .day-badge {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 11px;
  line-height: 1.2;
}

.day-card .day-badge .num { font-size: 15px; }

.badge-brisbane { background: var(--brisbane); }
.badge-goldcoast { background: var(--goldcoast); }
.badge-sydney { background: var(--sydney); }
.badge-melbourne { background: var(--melbourne); }
.badge-neutral { background: var(--neutral); }

.day-card .day-body { flex: 1; min-width: 0; }

.day-card .day-date {
  font-size: 11px;
  color: var(--text-muted);
}

.day-card .day-city {
  font-size: 15px;
  font-weight: 600;
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.day-card .day-issue {
  margin-top: 3px;
  font-size: 11px;
  color: var(--tbd);
  font-weight: 600;
}

.day-card .chevron {
  flex: 0 0 auto;
  color: #c9cdd4;
  font-size: 18px;
}

.day-card.today {
  outline: 2px solid var(--text);
  outline-offset: 1px;
}

.today-banner {
  background: linear-gradient(135deg, #16181d, #24272f);
  color: #fff;
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.today-banner .label {
  font-size: 12px;
  opacity: 0.65;
}

.today-banner .headline {
  font-size: 19px;
  font-weight: 700;
  margin-top: 4px;
}

.today-banner a {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: underline;
}

/* ---- day.html ---- */
.day-context {
  text-align: center;
  padding: 4px 0 4px;
  margin-bottom: 4px;
}

.day-context .ctx-day {
  font-size: 20px;
  font-weight: 800;
}

.day-context .ctx-date {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.bottom-nav {
  position: sticky;
  bottom: 0;
  display: flex;
  gap: 8px;
  background: #fff;
  margin: 20px calc(-1 * 16px) calc(-1 * (16px + env(safe-area-inset-bottom)));
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 12px rgba(16, 24, 40, 0.06);
  z-index: 5;
}

.bottom-nav a, .bottom-nav span {
  flex: 1;
  text-align: center;
  padding: 11px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 13px;
  font-weight: 600;
}

.bottom-nav a:active { background: #ececef; }

.bottom-nav span.disabled {
  color: #c9cdd4;
}

.accommodation-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.accommodation-card .badge-row { margin-bottom: 6px; }

.accommodation-card h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.accommodation-card .meta {
  font-size: 13px;
  color: var(--text-muted);
}

.accommodation-card .note {
  margin-top: 8px;
  font-size: 13px;
  color: var(--tbd);
}

.accommodation-card .booking-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: underline;
}

/* ---- timeline ---- */
.timeline {
  margin-top: 4px;
}

.segment {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 10px;
  position: relative;
  padding-bottom: 16px;
}

.segment:last-child { padding-bottom: 0; }

.seg-rail {
  position: relative;
  text-align: right;
  padding-top: 3px;
}

.seg-rail .seg-time {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  display: inline-block;
}

.seg-rail .seg-dot {
  position: absolute;
  right: -15px;
  top: 3px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--border);
}

.segment:not(:last-child) .seg-rail::after {
  content: '';
  position: absolute;
  right: -11px;
  top: 16px;
  bottom: -16px;
  width: 2px;
  background: var(--border);
}

.dot-confirmed { background: var(--confirmed); }
.dot-tbd { background: var(--tbd); }
.dot-candidate { background: var(--candidate); }
.dot-action { background: var(--action); }
.dot-confirmed-needs-check { background: var(--candidate); }

.seg-content {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  box-shadow: var(--shadow);
}

.seg-content .seg-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.seg-content .seg-title {
  font-size: 14px;
  font-weight: 600;
  flex: 1;
}

.badge {
  display: inline-block;
  flex: 0 0 auto;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  color: #fff;
  white-space: nowrap;
}

.badge.confirmed { background: var(--confirmed); }
.badge.tbd { background: var(--tbd); }
.badge.candidate { background: var(--candidate); }
.badge.action { background: var(--action); }
.badge.confirmed-needs-check { background: var(--candidate); }

.seg-content .seg-duration {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.seg-content .seg-detail {
  margin-top: 6px;
  font-size: 13px;
}

.seg-content .seg-warning {
  margin-top: 6px;
  font-size: 13px;
  background: #fff4e5;
  border: 1px solid #f0d9a8;
  border-radius: 8px;
  padding: 8px;
  color: #8a5a00;
}

.seg-content .seg-alt {
  margin-top: 6px;
  font-size: 13px;
}

.seg-content .seg-alt ul {
  margin: 4px 0 0;
  padding-left: 18px;
}

.notes-box {
  background: #fff9e6;
  border: 1px solid #f0e0a0;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 16px;
}

.notes-box ul {
  margin: 4px 0 0;
  padding-left: 18px;
}

/* ---- city.html ---- */
.city-page-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  margin: 4px 0 18px;
}

.city-page-title .dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.city-tile {
  display: block;
  padding: 16px;
  border-radius: var(--radius-sm);
  color: #fff;
  font-weight: 700;
  text-align: center;
  box-shadow: var(--shadow);
}

.tile-brisbane { background: var(--brisbane); }
.tile-goldcoast { background: var(--goldcoast); }
.tile-sydney { background: var(--sydney); }
.tile-melbourne { background: var(--melbourne); }

.guide-section {
  margin-bottom: 20px;
}

.guide-section h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.attraction {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 8px;
  box-shadow: var(--shadow);
}

.attraction .name { font-weight: 600; font-size: 14px; }
.attraction .howto { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.attraction .desc { font-size: 13px; margin-top: 4px; }

/* ---- checklist.html ---- */
.checklist-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
  margin-bottom: 8px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  box-shadow: var(--shadow);
}

.checklist-item input {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.checklist-item .item-text .title { font-weight: 600; font-size: 14px; }
.checklist-item .item-text .detail { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.checklist-item:has(input:checked) { opacity: 0.5; }
.checklist-item:has(input:checked) .title { text-decoration: line-through; }

.issue-card {
  background: #fdeceb;
  border: 1px solid #f3c6c2;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 8px;
}

.issue-card .issue-title { font-weight: 700; font-size: 14px; color: var(--tbd); }
.issue-card .issue-suggestion { font-size: 13px; margin-top: 4px; }
.issue-card a { text-decoration: underline; font-size: 12px; font-weight: 600; }

footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  padding: 24px 16px 40px;
}