/* 本文件实现多点选址页面布局、地铁站按线路着色、路线折线图例和时间条样式。 */
:root {
  --bg: #eef2f6;
  --panel: #ffffff;
  --text: #172033;
  --muted: #637083;
  --border: #d5dee8;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --origin-a: #0f766e;
  --origin-b: #c2410c;
  --transit: #2563eb;
  --driving: #ea580c;
  --walking: #15803d;
  --danger: #b42318;
  --shadow: 0 16px 36px rgba(22, 32, 51, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  color: var(--text);
  background: var(--bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  min-height: 100dvh;
}

.map-area {
  position: relative;
  min-height: 100dvh;
}

.map {
  width: 100%;
  height: 100%;
  min-height: 100dvh;
}

.map-status,
.route-times,
.map-legend {
  position: absolute;
  z-index: 10;
  border: 1px solid rgba(23, 32, 51, 0.12);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.map-status {
  left: 16px;
  bottom: 16px;
  max-width: min(560px, calc(100% - 32px));
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
}

.route-times {
  top: 16px;
  left: 16px;
  display: grid;
  gap: 8px;
  min-width: min(420px, calc(100% - 32px));
  padding: 12px 14px;
  border-radius: 10px;
}

.route-times[hidden] {
  display: none;
}

.time-row {
  display: grid;
  gap: 6px;
}

.time-label {
  font-size: 12px;
  font-weight: 750;
}

.time-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.time-chip {
  padding: 4px 8px;
  border-radius: 999px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.time-chip.transit {
  background: var(--transit);
}

.time-chip.driving {
  background: var(--driving);
}

.time-chip.walking {
  background: var(--walking);
}

.time-chip.is-active {
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px currentColor;
}

.map-legend {
  right: 16px;
  bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: min(420px, calc(100% - 32px));
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-item::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--swatch, #94a3b8);
}

.legend-item.origin-a::before {
  background: var(--origin-a);
}

.legend-item.origin-b::before {
  background: var(--origin-b);
}

.legend-item.mode-transit::before {
  background: var(--transit);
}

.legend-item.mode-driving::before {
  background: var(--driving);
}

.legend-item.mode-walking,
.legend-item.mode-riding {
  --swatch: var(--walking);
}

.legend-item.mode-walk {
  --swatch: #94a3b8;
}

.metro-pin {
  display: grid;
  justify-items: center;
  gap: 2px;
  pointer-events: none;
}

.metro-dot {
  width: 12px;
  height: 12px;
  border: 2px solid #fff;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.35);
}

.metro-name {
  max-width: 72px;
  overflow: hidden;
  color: #0f172a;
  font-size: 10px;
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-shadow: 0 0 4px #fff, 0 0 8px #fff;
}

.control-panel {
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  height: 100dvh;
  padding: 22px;
  overflow-y: auto;
  border-left: 1px solid var(--border);
  background: var(--panel);
}

.panel-header h1,
.results-header h2 {
  margin: 0;
}

.panel-header h1 {
  font-size: 24px;
  line-height: 1.2;
}

.panel-header p,
.hint {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.tab-button {
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  background: #fff;
  font-weight: 700;
}

.tab-button.active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

.origins-list {
  display: grid;
  gap: 12px;
}

.origin-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.remove-origin {
  min-height: 44px;
  padding: 0 12px;
  white-space: nowrap;
}

.more-results {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
}

.more-results summary {
  cursor: pointer;
  font-weight: 700;
}

.search-form {
  display: grid;
  gap: 14px;
}

label,
legend {
  color: var(--text);
  font-size: 14px;
  font-weight: 650;
}

input {
  width: 100%;
  min-height: 44px;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  background: #fff;
}

input:focus,
button:focus-visible,
.tab-button:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.22);
  outline-offset: 2px;
}

.coord-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

fieldset {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.choice-row,
.radius-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}

.choice-row {
  grid-template-columns: repeat(3, 1fr);
}

.choice-row.two {
  grid-template-columns: 1fr 1fr;
}

.choice-row label,
.radius-options label {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

.choice-row input,
.radius-options input {
  width: auto;
  min-height: auto;
  margin: 0 8px 0 0;
}

.custom-radius {
  display: block;
  margin-top: 12px;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.actions.single {
  grid-template-columns: 1fr;
}

button {
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
}

button[type="submit"] {
  color: #fff;
  background: var(--primary);
}

button[type="submit"]:hover {
  background: var(--primary-dark);
}

button[type="button"] {
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
}

#addOriginButton {
  width: 100%;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.message {
  min-height: 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

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

.results-section {
  display: grid;
  gap: 10px;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.results-header h2 {
  font-size: 18px;
}

#resultCount {
  color: var(--muted);
  font-size: 14px;
}

.results-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.result-item {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}

.result-item:hover,
.result-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.result-item.over-budget {
  opacity: 0.72;
}

.result-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  font-size: 15px;
  font-weight: 750;
}

.distance,
.badge {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
}

.badge {
  padding: 2px 8px;
  border-radius: 999px;
  background: #ecfdf5;
  color: var(--primary);
  font-size: 12px;
}

.badge.warn {
  background: #fff7ed;
  color: #c2410c;
}

.address,
.meta,
.commute-line {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.commute-line {
  font-variant-numeric: tabular-nums;
}

.open-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.open-links a {
  padding: 6px 10px;
  border-radius: 999px;
  background: #f0fdfa;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.map-pin {
  width: 28px;
  height: 28px;
  border: 2px solid #fff;
  border-radius: 999px;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  line-height: 24px;
  text-align: center;
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.25);
}

.map-pin.a {
  background: var(--origin-a);
}

.map-pin.b {
  background: var(--origin-b);
}

.map-pin.place {
  background: #334155;
}

.map-pin.over {
  background: #94a3b8;
}

.info-card {
  min-width: 220px;
  max-width: 280px;
  line-height: 1.45;
}

.info-card strong {
  display: block;
  margin-bottom: 4px;
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 52dvh auto;
  }

  .map-area,
  .map {
    min-height: 52dvh;
  }

  .control-panel {
    height: auto;
    min-height: 48dvh;
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .route-times,
  .map-legend {
    max-width: calc(100% - 24px);
  }

  .choice-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .control-panel {
    padding: 16px;
  }

  .coord-grid,
  .actions,
  .radius-options,
  .mode-tabs {
    grid-template-columns: 1fr;
  }
}