:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --text: #1d2330;
  --muted: #6b7280;
  --border: #e3e6ec;
  --soft: #f4f6f9;
  --accent: #f26c2d;
  --accent-ink: #ffffff;
  --route: #f26c2d;
  --start: #16a34a;
  --end: #dc2626;
  --error: #c62828;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b;
    --panel: #181c23;
    --text: #e7e9ee;
    --muted: #9aa1ad;
    --border: #2b313b;
    --soft: #222831;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft JhengHei", "PingFang TC", sans-serif;
  font-size: 14px;
}

button,
input {
  font: inherit;
  color: inherit;
}

button,
.file-btn {
  border: 1px solid var(--border);
  background: var(--soft);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  white-space: nowrap;
}

button:hover:not(:disabled),
.file-btn:hover {
  border-color: var(--accent);
}

button:disabled {
  opacity: 0.45;
  cursor: default;
}

input[type="text"],
input[type="number"] {
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 8px;
  padding: 6px 8px;
  min-width: 0;
}

input[type="checkbox"] {
  accent-color: var(--accent);
}

#app {
  display: flex;
  height: 100%;
}

#panel {
  width: 340px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border-right: 1px solid var(--border);
  z-index: 2;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-size: 17px;
  margin: 0;
}

h2 {
  font-size: 13px;
  margin: 0 0 8px;
  color: var(--muted);
  font-weight: 600;
}

.panel-body {
  overflow-y: auto;
  flex: 1;
}

section {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.muted {
  color: var(--muted);
  font-weight: normal;
}

.search-box gmp-place-autocomplete {
  width: 100%;
}

.stat-main {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.stat-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.stat-value {
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

.stat-sub {
  font-size: 15px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.pace input {
  width: 100%;
  padding: 2px 6px;
}

.pace input.invalid {
  border-color: var(--error);
}

.toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin-top: 10px;
}

.toggles label {
  cursor: pointer;
}

.status {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
  min-height: 1em;
}

.status.error {
  color: var(--error);
}

.auto-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

.auto-row input {
  width: 64px;
}

.auto-row button {
  margin-left: auto;
}

button.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.auto-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.auto-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  margin-top: 6px;
  border: 1px solid var(--border);
  border-left: 5px solid var(--route-color);
  border-radius: 8px;
  cursor: pointer;
}

.auto-list li.selected {
  background: var(--soft);
  border-color: var(--route-color);
}

.auto-list .info {
  flex: 1;
  min-width: 0;
}

.auto-list .title {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.auto-list .detail {
  font-size: 12px;
  color: var(--muted);
}

#auto-cancel {
  margin-top: 8px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.section-title h2 {
  margin: 0;
}

.btn-group {
  display: flex;
  gap: 6px;
}

.hint {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--muted);
}

.point-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.point-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
}

.point-list .badge {
  flex-shrink: 0;
}

.point-list .leg {
  flex: 1;
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.point-list .actions {
  display: flex;
  gap: 2px;
}

.icon-btn {
  padding: 2px 7px;
  background: transparent;
  border-color: transparent;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 6px;
  border-radius: 13px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 12px;
  font-weight: 700;
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}

.badge.start {
  background: var(--start);
}

.badge.end {
  background: var(--end);
}

.km-label {
  background: #fff;
  color: #1d2330;
  border: 2px solid var(--route);
  border-radius: 10px;
  padding: 0 5px;
  font-size: 11px;
  font-weight: 700;
  line-height: 16px;
  transform: translateY(50%);
}

.hover-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #1d4ed8;
  border: 3px solid #fff;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
  transform: translateY(50%);
}

.elevation-chart {
  position: relative;
}

.elevation-chart svg {
  display: block;
  width: 100%;
  height: 140px;
  touch-action: none;
}

.elevation-chart .area {
  fill: var(--accent);
  fill-opacity: 0.18;
}

.elevation-chart .line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.elevation-chart .axis text {
  fill: var(--muted);
  font-size: 10px;
}

.elevation-chart .grid {
  stroke: var(--border);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.elevation-chart .cursor {
  stroke: var(--text);
  stroke-width: 1;
  stroke-dasharray: 3 3;
  vector-effect: non-scaling-stroke;
}

.chart-tip {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  pointer-events: none;
  white-space: nowrap;
}

.btn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.save-row {
  display: flex;
  gap: 6px;
}

.save-row input {
  flex: 1;
}

.saved-list {
  list-style: none;
  margin: 8px 0;
  padding: 0;
}

.saved-list li {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 0;
}

.saved-list .name {
  flex: 1;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.saved-list .name:hover {
  color: var(--accent);
}

.saved-list .dist {
  color: var(--muted);
  font-size: 12px;
}

.file-btn {
  display: inline-block;
}

#map-wrap {
  position: relative;
  flex: 1;
}

#map {
  position: absolute;
  inset: 0;
}

.map-btn {
  position: absolute;
  right: 10px;
  bottom: 120px;
  width: 40px;
  height: 40px;
  font-size: 20px;
  padding: 0;
  background: #fff;
  color: #333;
  border: none;
  border-radius: 4px;
  box-shadow: var(--shadow);
}

.setup {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  z-index: 10;
  padding: 16px;
}

.setup[hidden] {
  display: none;
}

.setup-card {
  max-width: 480px;
  line-height: 1.7;
}

.setup-card h1 {
  font-size: 20px;
  margin-bottom: 8px;
}

code {
  background: var(--soft);
  padding: 1px 5px;
  border-radius: 4px;
}

.error {
  color: var(--error);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #1d2330;
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  z-index: 20;
  max-width: calc(100% - 32px);
}

/* Google 資訊視窗固定白底，文字不跟深色模式 */
.info-box {
  color: #1d2330;
}

.info-add {
  margin-top: 6px;
  background: var(--accent);
  color: #fff;
  border: none;
}

.mobile-only {
  display: none;
}

/* 手機：地圖在上，面板在下 */
@media (max-width: 760px) {
  #app {
    flex-direction: column-reverse;
  }

  #panel {
    width: 100%;
    max-height: 48vh;
    border-right: none;
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.12);
  }

  #panel.collapsed {
    max-height: none;
  }

  #panel.collapsed .panel-body > section:not(.stats) {
    display: none;
  }

  #panel.collapsed #panel-toggle {
    transform: rotate(180deg);
  }

  .panel-header {
    padding: 8px 16px;
  }

  .mobile-only {
    display: inline-block;
  }

  .map-btn {
    bottom: 20px;
  }
}