/* ── Kai Travel Planner Design System ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ── Tokens ── */
:root {
  --c-primary:       #0EA5E9;
  --c-primary-dark:  #0284C7;
  --c-primary-light: #F0F9FF;
  --c-accent:        #F97316;
  --c-bg:            #FFFFFF;
  --c-surface:       #F8FAFC;
  --c-border:        #E2E8F0;
  --c-text:          #0F172A;
  --c-text-2:        #334155;
  --c-muted:         #64748B;
  --c-muted-lt:      #94A3B8;
  --r-card:          8px;
  --r-btn:           6px;
  --r-badge:         20px;
  --pp:              16px;   /* panel padding */
}

/* ── Reset / Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: #e2e8f0;
  overflow: hidden;
  height: 100dvh;
}

button, input, select {
  font-family: inherit;
}

/* ── Layout ── */
#app { display: none; height: 100dvh; overflow: hidden; }
#app.ready { display: flex !important; }

#left-panel {
  width: 400px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--c-bg);
  box-shadow: 2px 0 12px rgba(0,0,0,.08);
  z-index: 20;
}

#panel-content { flex: 1; overflow-y: auto; }
#map-container { flex: 1; position: relative; }
#map { position: absolute; inset: 0; }
.maplibregl-canvas { outline: none; }
.maplibregl-popup-content { border-radius: var(--r-card); font-size: 13px; padding: 8px 12px; }

@media (max-width: 767px) {
  #left-panel {
    position: fixed; top: 0; bottom: 0; left: 0;
    transform: translateX(-100%);
    transition: transform .3s;
    z-index: 40;
  }
  #left-panel.panel-open { transform: translateX(0); }
}

/* ── Panel Header ── */
.panel-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px var(--pp);
  border-bottom: 1px solid var(--c-border);
  flex-shrink: 0;
}
.panel-logo { font-size: 18px; flex-shrink: 0; }
.panel-title { font-size: 13px; font-weight: 700; color: var(--c-text); }
.trip-sel-btn {
  display: flex; align-items: center; gap: 4px;
  font-size: 11px; color: var(--c-muted); background: transparent;
  border: none; outline: none; cursor: pointer; font-family: inherit;
  padding: 0; max-width: 200px;
}
.trip-sel-btn span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.trip-dropdown {
  position: absolute; top: calc(100% + 4px); left: 0;
  min-width: 180px; max-width: 280px;
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.14);
  z-index: 200; list-style: none; margin: 0; padding: 4px 0;
}
.trip-dropdown li {
  padding: 8px 14px; font-size: 12px; cursor: pointer;
  color: var(--c-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.trip-dropdown li:hover { background: var(--c-row-hover); }
.trip-dropdown li.active { color: var(--c-accent); font-weight: 600; }
.place-dropdown {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.14);
  z-index: 10; list-style: none; margin: 2px 0 0; padding: 4px 0;
  max-height: 200px; overflow-y: auto;
}
.place-dropdown li {
  padding: 8px 12px; font-size: 12px; color: var(--c-text); cursor: pointer;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  transition: background .15s;
}
.place-dropdown li:hover { background: var(--c-surface); }

/* ── Tab Bar ── */
.tab-bar {
  display: flex;
  border-bottom: 1px solid var(--c-border);
  flex-shrink: 0;
}
.tab-btn {
  flex: 1;
  padding: 10px 0;
  font-size: 12px;
  font-weight: 500;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  cursor: pointer;
  color: var(--c-muted);
  transition: color .15s, border-color .15s;
  min-height: 44px;
}
.tab-btn.active {
  border-bottom-color: var(--c-primary);
  color: var(--c-primary-dark);
}

/* ── Status Badge ── */
.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--r-badge);
  flex-shrink: 0;
}
.badge-planning  { color: #1d4ed8; background: #dbeafe; }
.badge-ongoing   { color: #166534; background: #dcfce7; }
.badge-completed { color: #475569; background: #f1f5f9; }
.badge-readonly  { color: #92400e; background: #fef3c7; }

/* ── Trip Header (in timeline) ── */
.trip-header {
  padding: 12px var(--pp) 8px;
  border-bottom: 1px solid var(--c-border);
}
.trip-header-row { display: flex; align-items: center; gap: 8px; }
.trip-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.trip-dates { font-size: 11px; color: var(--c-muted-lt); margin-top: 2px; }
.trip-stats { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.trip-stat-chip { font-size: 11px; color: var(--c-muted); background: var(--c-surface); border-radius: 999px; padding: 2px 8px; border: 1px solid var(--c-border); }
.trip-stat-chip.accent { color: #16a34a; border-color: #bbf7d0; background: #f0fdf4; }
.trip-notes { font-size: 12px; color: var(--c-text-2); margin-top: 6px; padding: 6px 8px; background: var(--c-surface); border-radius: var(--r-card); white-space: pre-wrap; line-height: 1.5; }

/* ── Segment ── */
.seg-block { margin-bottom: 4px; }
.seg-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px var(--pp);
  cursor: pointer;
  background: var(--c-surface);
  user-select: none;
  transition: background .15s;
}
.seg-header:hover { background: var(--c-surface); }
.seg-arrow { font-size: 10px; color: var(--c-muted-lt); flex-shrink: 0; }
.seg-info { flex: 1; min-width: 0; }
.seg-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.seg-dates-sm { font-size: 10px; color: var(--c-muted-lt); }
.seg-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

/* ── Day Card ── */
.day-card {
  display: flex;
  gap: 10px;
  padding: 8px var(--pp);
  cursor: pointer;
  border-bottom: 1px solid var(--c-border);
  transition: background .15s;
  min-height: 44px;
}
.day-card:hover { background: var(--c-surface); }
.day-card.is-transport { background: var(--c-surface); }
.day-card.is-transport:hover { background: #f1f5f9; }
.day-card.is-selected { outline: 2px solid var(--c-primary); outline-offset: -2px; }
.day-card.is-today { background: rgba(249,115,22,.04); box-shadow: inset 3px 0 0 var(--c-accent); }
.day-card.is-today:hover { background: rgba(249,115,22,.08); }
.today-badge { display: inline-flex; align-items: center; background: var(--c-accent); color: #fff; font-size: 9px; font-weight: 700; border-radius: 4px; padding: 1px 5px; margin-left: 5px; letter-spacing: .3px; vertical-align: middle; }

.day-icon {
  flex-shrink: 0;
  margin-top: 2px;
  width: 20px;
  height: 20px;
}
.day-icon svg { width: 20px; height: 20px; }
.day-icon-sightseeing { color: #f59e0b; }
.day-icon-transport   { color: #94a3b8; }
.day-icon-trekking    { color: #22c55e; }
.day-icon-diving      { color: #3b82f6; }
.day-icon-rest        { color: #a855f7; }

.day-body { flex: 1; min-width: 0; }
.day-date  { font-size: 11px; color: var(--c-muted-lt); margin-bottom: 2px; }
.day-title { font-size: 13px; color: var(--c-text); font-weight: 500; line-height: 1.3; }
.day-transport {
  font-size: 11px;
  color: var(--c-muted);
  margin-top: 3px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.day-transport svg { width: 13px; height: 13px; flex-shrink: 0; }
.day-note {
  font-size: 11px;
  color: var(--c-muted-lt);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.day-loc-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-primary);
  flex-shrink: 0;
  margin-top: 8px;
}

/* ── Checklist (Todo / Packing) ── */
.checklist-section { border-top: 1px solid var(--c-border); }
.checklist-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px var(--pp);
  cursor: pointer;
  user-select: none;
  min-height: 44px;
  transition: background .15s;
}
.checklist-header:hover { background: var(--c-surface); }
.checklist-header-title { font-size: 12px; font-weight: 600; color: var(--c-text-2); flex: 1; }
.checklist-count { font-size: 11px; color: var(--c-muted-lt); }

.packing-cat-label {
  font-size: 10px;
  color: var(--c-muted-lt);
  padding: 6px var(--pp) 2px;
  text-transform: uppercase;
  letter-spacing: .05em;
  background: var(--c-surface);
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px var(--pp);
  border-bottom: 1px solid var(--c-border);
  cursor: pointer;
  transition: background .15s;
  min-height: 40px;
}
.checklist-item:hover { background: var(--c-surface); }
.checklist-item.done .checklist-text {
  text-decoration: line-through;
  color: var(--c-muted-lt);
}

.checklist-cb {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--c-border);
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .15s;
}
.checklist-item.done .checklist-cb {
  background: var(--c-primary);
  border-color: var(--c-primary);
}
.checklist-cb svg { width: 10px; height: 10px; color: white; }

.checklist-text { font-size: 13px; color: var(--c-text); flex: 1; }
.checklist-del-btn {
  background: none; border: none; cursor: pointer;
  font-size: 16px; color: var(--c-muted-lt); padding: 0 2px; line-height: 1;
  flex-shrink: 0; opacity: 0; transition: opacity .15s, color .15s;
}
.checklist-item:hover .checklist-del-btn { opacity: 1; }
.checklist-del-btn:hover { color: #ef4444; }

.checklist-add-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px var(--pp);
  border-top: 1px dashed var(--c-border);
}
.checklist-add-input {
  flex: 1;
  font-size: 12px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-btn);
  padding: 5px 8px;
  outline: none;
  font-family: inherit;
  min-width: 0;
}
.checklist-add-input:focus { border-color: var(--c-primary); }

/* ── Budget ── */
.budget-summary {
  background: var(--c-surface);
  border-radius: var(--r-card);
  padding: var(--pp);
}
.budget-amount-row { display: flex; align-items: baseline; gap: 8px; }
.budget-amount { font-size: 22px; font-weight: 700; color: var(--c-text); }
.budget-total-lbl { font-size: 13px; color: var(--c-muted-lt); }
.budget-bar-track {
  height: 6px;
  background: var(--c-border);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 8px;
}
.budget-bar-fill {
  height: 100%;
  background: var(--c-primary);
  border-radius: 3px;
  transition: width .4s;
}
.budget-bar-fill.over { background: var(--c-accent); }
.budget-pct { font-size: 11px; color: var(--c-muted-lt); margin-top: 4px; }

.expense-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--c-border);
}
.expense-date { font-size: 11px; color: var(--c-muted-lt); width: 52px; flex-shrink: 0; }
.expense-note { font-size: 12px; color: var(--c-text-2); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.expense-amount { font-size: 12px; font-weight: 600; color: var(--c-text); }
.expense-del-btn {
  background: none; border: none; cursor: pointer;
  font-size: 16px; color: var(--c-muted-lt); padding: 0 2px; line-height: 1;
  flex-shrink: 0; opacity: 0;
  transition: opacity .15s, color .15s;
}
.expense-row:hover .expense-del-btn { opacity: 1; }
.expense-del-btn:hover { color: #ef4444; }
.expense-edit-btn {
  background: none; border: none; cursor: pointer; display: flex; align-items: center;
  color: var(--c-muted-lt); padding: 0 2px; flex-shrink: 0; opacity: 0;
  transition: opacity .15s, color .15s;
}
.expense-row:hover .expense-edit-btn { opacity: 1; }
.expense-edit-btn:hover { color: var(--c-accent); }
.expense-seg-group { margin-top: 10px; }
.expense-seg-header { display: flex; align-items: center; justify-content: space-between; padding: 5px 0; border-bottom: 1px solid var(--c-border); margin-bottom: 2px; }
.expense-seg-name { font-size: 11px; font-weight: 600; color: var(--c-text-2); }
.expense-seg-subtotal { font-size: 11px; color: var(--c-muted); font-weight: 500; }
.idea-item {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 8px 0; border-bottom: 1px solid var(--c-border);
}
.idea-item-body { flex: 1; min-width: 0; }
.idea-item-title { font-size: 13px; font-weight: 500; color: var(--c-text); }
.idea-item-notes { font-size: 11px; color: var(--c-muted); margin-top: 2px; }
.idea-del-btn {
  background: none; border: none; cursor: pointer;
  font-size: 16px; color: var(--c-muted-lt); padding: 0 2px; flex-shrink: 0; opacity: 0;
  transition: opacity .15s, color .15s; line-height: 1;
}
.idea-item:hover .idea-del-btn { opacity: 1; }
.idea-del-btn:hover { color: #ef4444; }

/* ── Add Expense Form ── */
.expense-form {
  background: var(--c-surface);
  border-radius: var(--r-card);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}
.expense-form input,
.expense-form select {
  padding: 7px 10px;
  border: 1.5px solid var(--c-border);
  border-radius: 6px;
  font-size: 12px;
  color: var(--c-text);
  outline: none;
  background: white;
  transition: border-color .2s;
  width: 100%;
}
.expense-form input:focus,
.expense-form select:focus { border-color: var(--c-primary); }
.expense-form-row { display: flex; gap: 8px; }
.expense-form-row input,
.expense-form-row select { flex: 1; min-width: 0; }

/* ── Prefs ── */
.pref-row { display: flex; gap: 8px; font-size: 12px; padding: 3px 0; }
.pref-label { color: var(--c-muted-lt); width: 72px; flex-shrink: 0; }
.pref-value { color: var(--c-text-2); }

.bucket-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--c-border);
}
.bucket-icon { width: 16px; height: 16px; color: var(--c-primary); flex-shrink: 0; }
.bucket-name { font-size: 13px; color: var(--c-text-2); }
.bucket-note {
  font-size: 11px;
  color: var(--c-muted-lt);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Prefs Edit ── */
.pref-edit-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; }
.pref-select { flex: 1; font-size: 12px; font-family: inherit; border: 1px solid var(--c-border); border-radius: var(--r-btn); padding: 4px 8px; background: var(--c-bg); color: var(--c-text); outline: none; cursor: pointer; }
.pref-select:focus { border-color: var(--c-primary); }
.pref-input { width: 100%; font-size: 12px; font-family: inherit; border: 1px solid var(--c-border); border-radius: var(--r-btn); padding: 6px 10px; background: var(--c-bg); color: var(--c-text); outline: none; box-sizing: border-box; }
.pref-input:focus { border-color: var(--c-primary); }
.tag-wrap { display: flex; flex-wrap: wrap; gap: 4px; flex: 1; align-items: center; min-height: 28px; }
.tag-chip { display: inline-flex; align-items: center; gap: 3px; background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-badge); padding: 2px 6px 2px 8px; font-size: 11px; color: var(--c-text); }
.tag-rm { background: none; border: none; cursor: pointer; color: var(--c-muted); padding: 0 2px; font-size: 14px; line-height: 1; }
.tag-rm:hover { color: var(--c-text); }
.tag-input { border: none; outline: none; font-size: 11px; font-family: inherit; color: var(--c-text); background: transparent; min-width: 60px; flex: 1; }

/* ── Buttons ── */
.btn {
  padding: 8px 12px;
  font-size: 12px;
  border: none;
  border-radius: var(--r-btn);
  cursor: pointer;
  transition: background .15s, opacity .15s;
  min-height: 36px;
  font-weight: 500;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary { background: var(--c-primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--c-primary-dark); }
.btn-ghost { background: var(--c-surface); color: var(--c-text-2); }
.btn-ghost:hover:not(:disabled) { background: var(--c-border); }
.btn-success { background: #ecfdf5; color: #166534; }
.btn-success:hover:not(:disabled) { background: #d1fae5; }
.btn-link { background: none; color: var(--c-primary); padding: 4px; min-height: unset; font-size: 11px; }
.btn-link:hover { opacity: .75; }
.btn-secondary { background: white; color: var(--c-text-2); border: 1px solid var(--c-border); }
.btn-secondary:hover:not(:disabled) { background: var(--c-surface); border-color: var(--c-muted-lt); }
.btn-danger { background: #fef2f2; color: #dc2626; }
.btn-danger:hover:not(:disabled) { background: #fee2e2; }
.btn-sm { padding: 5px 10px; font-size: 11px; min-height: 28px; }
.btn-icon { padding: 0; width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; min-height: unset; }
.btn-icon.btn-sm { width: 26px; height: 26px; }
.btn-full { width: 100%; }

/* ── Section Label ── */
.section-lbl {
  font-size: 11px;
  color: var(--c-muted-lt);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 8px;
}

/* ── Surface Card ── */
.surface-card {
  background: var(--c-surface);
  border-radius: var(--r-card);
  padding: var(--pp);
}

/* ── Share URL ── */
.share-url-box {
  font-size: 11px;
  font-family: ui-monospace, 'Cascadia Code', monospace;
  background: var(--c-surface);
  padding: 8px;
  border-radius: 6px;
  word-break: break-all;
  color: var(--c-text-2);
  margin-top: 4px;
}

/* ── Empty State ── */
.empty-state {
  padding: 24px;
  text-align: center;
  color: var(--c-muted-lt);
  font-size: 13px;
  line-height: 1.6;
}

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 40;
  align-items: center;
  justify-content: center;
  background: rgba(15,23,42,.7);
  backdrop-filter: blur(3px);
  padding: 16px;
}
.modal-overlay.open { display: flex; }
.modal-card {
  background: var(--c-bg);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0,0,0,.18);
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-border);
  flex-shrink: 0;
}
.modal-title { font-size: 15px; font-weight: 600; color: var(--c-text); }
.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--c-muted);
  font-size: 20px;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
}
.modal-close:hover { background: var(--c-surface); color: var(--c-text); }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--c-border);
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-shrink: 0;
}

/* ── Form (Modal 內通用) ── */
.form-row { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.form-row:last-child { margin-bottom: 0; }
.form-label { font-size: 12px; font-weight: 500; color: var(--c-muted); }
.form-input {
  width: 100%;
  font-size: 13px;
  font-family: inherit;
  border: 1px solid var(--c-border);
  border-radius: var(--r-btn);
  padding: 8px 10px;
  background: var(--c-bg);
  color: var(--c-text);
  outline: none;
  box-sizing: border-box;
}
.form-input:focus { border-color: var(--c-primary); }
.form-2col { display: flex; gap: 12px; }
.form-2col .form-row { flex: 1; margin-bottom: 0; }

/* ── Color Swatches ── */
.color-swatch-row { display: flex; flex-wrap: wrap; gap: 8px; padding: 4px 0; }
.color-swatch {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  outline: 2px solid transparent;
  outline-offset: 2px;
  transition: outline-color .15s;
}
.color-swatch.selected { outline-color: var(--c-text); }

/* ── Auth Overlay ── */
#auth-overlay {
  display: flex;
  position: fixed;
  inset: 0;
  z-index: 50;
  align-items: center;
  justify-content: center;
  background: rgba(15,23,42,.85);
  backdrop-filter: blur(4px);
}
.auth-card {
  background: white;
  border-radius: 20px;
  box-shadow: 0 24px 48px rgba(0,0,0,.2);
  padding: 32px;
  width: 100%;
  max-width: 360px;
  margin: 16px;
}
.auth-logo { font-size: 40px; text-align: center; margin-bottom: 8px; }
.auth-title { font-size: 20px; font-weight: 700; color: var(--c-text); text-align: center; }
.auth-sub { font-size: 13px; color: var(--c-muted-lt); text-align: center; margin-top: 4px; margin-bottom: 24px; }
.auth-label { display: block; font-size: 13px; font-weight: 500; color: #475569; margin-bottom: 6px; }
.auth-input {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--c-border);
  border-radius: 10px;
  font-size: 14px;
  outline: none;
  margin-bottom: 12px;
  transition: border-color .2s;
  font-family: inherit;
}
.auth-input:focus { border-color: var(--c-primary); }
.auth-input-otp {
  font-size: 20px;
  text-align: center;
  letter-spacing: .3em;
}
.auth-btn {
  width: 100%;
  padding: 11px;
  background: var(--c-primary-dark);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s;
}
.auth-btn:hover { background: #0369a1; }
.auth-btn:disabled { opacity: .6; cursor: not-allowed; }
.auth-error {
  display: none;
  margin-top: 12px;
  font-size: 12px;
  color: #dc2626;
  text-align: center;
}

/* ── Offline Banner ── */
#offline-banner {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 40;
  background: #d97706;
  color: white;
  font-size: 12px;
  text-align: center;
  padding: 6px 16px;
}

/* ── Online Dot ── */
#online-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  flex-shrink: 0;
}

/* ── Share Loading ── */
#share-loading {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: white;
  color: var(--c-muted);
  font-size: 14px;
  gap: 12px;
}
.share-loading-icon svg { width: 40px; height: 40px; color: var(--c-primary); }

/* ── Mobile Toggle ── */
#panel-toggle {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 60;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-primary-dark);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
  align-items: center;
  justify-content: center;
}
#panel-toggle svg { width: 22px; height: 22px; }

/* ── Today Summary（旅途中快覽）── */
.today-summary {
  margin: 8px var(--pp);
  background: rgba(249,115,22,.05);
  border: 1px solid rgba(249,115,22,.2);
  border-radius: var(--r-card);
  overflow: hidden;
}
.today-summary-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px 6px;
  border-bottom: 1px solid rgba(249,115,22,.15);
}
.today-summary-title { font-size: 11px; font-weight: 700; color: var(--c-accent); text-transform: uppercase; letter-spacing: .04em; }
.today-summary-day   { font-size: 11px; color: var(--c-muted-lt); }
.today-summary-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid rgba(249,115,22,.08);
}
.today-summary-item:last-child { border-bottom: none; }
.today-summary-body { flex: 1; min-width: 0; }
.today-summary-item-title { font-size: 13px; font-weight: 500; color: var(--c-text); line-height: 1.3; }
.today-summary-item-note  { font-size: 11px; color: var(--c-muted-lt); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.today-summary-seg { font-size: 10px; font-weight: 600; flex-shrink: 0; padding-top: 3px; }

/* ── Mobile Readability ── */
@media (max-width: 767px) {
  .day-title      { font-size: 15px; }
  .day-date       { font-size: 12px; }
  .day-note       { font-size: 12px; }
  .day-transport  { font-size: 12px; }
  .day-card       { padding-top: 11px; padding-bottom: 11px; }
  .seg-name       { font-size: 13px; }
  .checklist-text { font-size: 15px; }
  .checklist-item { min-height: 48px; }
  .today-summary-item-title { font-size: 15px; }
}

/* ── Dark Mode ── */
@media (prefers-color-scheme: dark) {
  :root {
    --c-bg:            #0F172A;
    --c-surface:       #1E293B;
    --c-border:        #334155;
    --c-text:          #F1F5F9;
    --c-text-2:        #CBD5E1;
    --c-muted:         #94A3B8;
    --c-muted-lt:      #64748B;
    --c-primary-light: rgba(14,165,233,.15);
  }
  body                        { background: #020617; }
  #share-loading              { background: #0F172A; }
  .modal-overlay              { background: rgba(0,0,0,.75); }
  .auth-card                  { background: #0F172A; box-shadow: 0 4px 32px rgba(0,0,0,.6); }
  #auth-overlay               { background: #020617; }
  .maplibregl-popup-content   { background: #1E293B; color: #F1F5F9; box-shadow: 0 4px 16px rgba(0,0,0,.4); }
  .trip-dropdown,
  .place-dropdown             { background: #1E293B; border-color: #334155; }
  .trip-dropdown li:hover,
  .place-dropdown li:hover    { background: #334155; }
  .form-input                 { background: #1E293B; color: #F1F5F9; }
  .color-swatch.selected      { outline-color: #F1F5F9; }
  .today-summary              { background: rgba(249,115,22,.08); border-color: rgba(249,115,22,.25); }
  .today-summary-hdr          { border-bottom-color: rgba(249,115,22,.2); }
  .today-summary-item         { border-bottom-color: rgba(249,115,22,.12); }
  #offline-banner             { background: #92400e; }
}