:root {
  --bg-canvas: #f3ead9;
  --bg-card: rgba(255, 250, 244, 0.84);
  --text-main: #251717;
  --text-muted: #664745;
  --accent: #c0281c;
  --accent-deep: #8f1a11;
  --accent-warm: #db7f30;
  --line: rgba(135, 73, 54, 0.18);
  --shadow: 0 20px 40px rgba(80, 32, 20, 0.18);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-main);
  font-family: "Noto Serif SC", "Songti SC", "Source Han Serif SC", serif;
  background:
    radial-gradient(circle at 8% 12%, rgba(219, 127, 48, 0.24), transparent 30%),
    radial-gradient(circle at 92% 0%, rgba(192, 40, 28, 0.26), transparent 28%),
    linear-gradient(165deg, #f8f1e4 0%, #f0e4d2 42%, #ead8c0 100%);
  line-height: 1.55;
}

.glow {
  position: fixed;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  z-index: 0;
}

.glow-left {
  width: 300px;
  height: 300px;
  background: rgba(192, 40, 28, 0.42);
  left: -120px;
  top: 20%;
}

.glow-right {
  width: 360px;
  height: 360px;
  background: rgba(219, 127, 48, 0.34);
  right: -150px;
  top: 56%;
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1320px, 92vw);
  margin: 28px auto 36px;
  display: grid;
  gap: 18px;
}

.hero,
.control-panel,
.stats-grid,
.main-grid,
.extra-grid {
  animation: fade-up 0.66s ease both;
}

.control-panel {
  animation-delay: 0.08s;
}

.stats-grid {
  animation-delay: 0.14s;
}

.main-grid {
  animation-delay: 0.2s;
}

.extra-grid {
  animation-delay: 0.26s;
}

.hero {
  background: linear-gradient(135deg, rgba(160, 35, 22, 0.96), rgba(105, 17, 10, 0.96));
  color: #ffeede;
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  border: 1px solid rgba(255, 220, 187, 0.32);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0;
  font-family: "Outfit", "Avenir Next", sans-serif;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 12px;
  color: rgba(255, 236, 209, 0.86);
}

.hero h1 {
  margin: 8px 0;
  font-size: clamp(1.65rem, 2.6vw, 2.4rem);
}

.hero-text {
  margin: 0;
  max-width: 720px;
  color: rgba(255, 238, 218, 0.92);
}

.control-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px;
  backdrop-filter: blur(10px);
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(260px, 1.4fr) repeat(2, minmax(130px, 0.8fr)) minmax(220px, auto);
  box-shadow: 0 8px 24px rgba(91, 47, 35, 0.08);
}

.control-item {
  display: grid;
  gap: 8px;
}

.control-item span {
  font-size: 13px;
  color: var(--text-muted);
}

input,
select {
  width: 100%;
  border: 1px solid rgba(130, 79, 58, 0.24);
  border-radius: 10px;
  background: rgba(255, 250, 246, 0.94);
  padding: 10px 12px;
  font-size: 14px;
  color: var(--text-main);
}

input:focus,
select:focus {
  outline: 2px solid rgba(192, 40, 28, 0.2);
  border-color: rgba(192, 40, 28, 0.54);
}

.button-row {
  display: flex;
  gap: 10px;
  align-items: end;
}

.share-hint {
  margin: -6px 2px 0;
  color: var(--text-muted);
  font-size: 12px;
  grid-column: 1 / -1;
}

.travel-model-panel {
  grid-column: 1 / -1;
  border: 1px dashed rgba(143, 77, 57, 0.32);
  border-radius: 14px;
  background: rgba(255, 249, 242, 0.72);
  padding: 10px 12px 12px;
}

.travel-model-panel summary {
  cursor: pointer;
  color: #6b3e33;
  font-size: 13px;
  font-weight: 700;
  font-family: "Outfit", "Noto Serif SC", sans-serif;
}

.travel-model-panel[open] summary {
  margin-bottom: 10px;
}

.travel-model-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.travel-model-grid .control-item span {
  font-size: 12px;
}

.travel-model-grid input {
  padding: 8px 10px;
  font-size: 13px;
}

.travel-model-actions {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

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

.route-data-hint {
  margin: 2px 2px 10px;
  color: #6c4138;
  font-size: 12px;
}

.route-data-hint.loading {
  color: #9a4a24;
}

.route-data-hint.partial {
  color: #8f1a11;
}

.button {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  color: #fff4e8;
  background: linear-gradient(120deg, var(--accent), var(--accent-deep));
  cursor: pointer;
  font-family: "Outfit", "Noto Serif SC", sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.16s ease, opacity 0.16s ease;
}

.button:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.button.ghost {
  color: var(--accent-deep);
  background: rgba(255, 245, 237, 0.9);
  border: 1px solid rgba(192, 40, 28, 0.3);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: 0 8px 18px rgba(83, 48, 39, 0.08);
}

.stat-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.stat-card h2 {
  margin: 8px 0 0;
  font-size: clamp(1.42rem, 2.1vw, 1.9rem);
  color: var(--accent-deep);
}

.main-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.8fr);
}

.map-column {
  display: grid;
  gap: 12px;
  grid-template-rows: auto auto;
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 14px;
  backdrop-filter: blur(8px);
  box-shadow: 0 12px 28px rgba(79, 45, 34, 0.12);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}

.panel-head h3 {
  margin: 0;
  font-size: 1.05rem;
}

.panel-head p {
  margin: 2px 0 0;
  color: var(--text-muted);
  font-size: 13px;
}

.scenic-list {
  max-height: 560px;
  overflow: auto;
  display: grid;
  gap: 10px;
  padding-right: 4px;
}

.scenic-empty {
  margin: 4px 0;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(151, 92, 71, 0.45);
  padding: 12px;
  color: var(--text-muted);
  background: rgba(255, 247, 240, 0.82);
}

.scenic-item {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(145, 88, 66, 0.24);
  background: rgba(255, 252, 249, 0.92);
  padding: 12px;
  display: grid;
  gap: 8px;
  transition: border-color 0.15s ease, transform 0.15s ease, background-color 0.15s ease;
}

.scenic-item,
.plan-step {
  width: 100%;
  font: inherit;
  color: inherit;
  text-align: left;
  appearance: none;
  -webkit-appearance: none;
}

.scenic-item:hover {
  transform: translateY(-1px);
}

.scenic-item.active {
  border-color: rgba(192, 40, 28, 0.72);
  background: rgba(255, 241, 233, 0.95);
}

.item-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.item-head h4 {
  margin: 0;
  font-size: 1rem;
}

.tag {
  white-space: nowrap;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  color: #7d281f;
  background: rgba(192, 40, 28, 0.12);
  border: 1px solid rgba(192, 40, 28, 0.2);
  height: fit-content;
}

.item-brief {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.item-address {
  margin: 0;
  color: #6f3e33;
  font-size: 12px;
  font-weight: 600;
}

.item-parking {
  margin: 0;
  color: #3a6e48;
  font-size: 12px;
  font-weight: 600;
  background: rgba(58, 110, 72, 0.08);
  border-radius: 6px;
  padding: 3px 7px;
  display: inline-block;
}

.item-intro {
  margin: 0;
  color: #704d46;
  font-size: 13px;
}

.item-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  color: #7a4a3b;
  font-size: 12px;
}

.meta-chip {
  border-radius: 999px;
  border: 1px solid rgba(142, 78, 57, 0.26);
  background: rgba(252, 244, 236, 0.9);
  padding: 3px 8px;
}

.link-btn {
  display: inline-block;
  justify-self: start;
  border: none;
  background: transparent;
  color: var(--accent-deep);
  cursor: pointer;
  padding: 0;
  font-size: 13px;
  font-weight: 700;
}

.link-btn:hover {
  text-decoration: underline;
}

.map-panel {
  padding: 0;
  overflow: hidden;
  position: relative;
}

#map {
  width: 100%;
  min-height: 420px;
  background:
    radial-gradient(circle at 25% 18%, rgba(245, 174, 98, 0.2), transparent 36%),
    linear-gradient(180deg, rgba(255, 248, 239, 0.98), rgba(247, 236, 223, 0.96));
}

.map-unavailable {
  min-height: 420px;
  display: grid;
  place-items: center;
  text-align: center;
  color: #6a3f34;
  padding: 22px;
  font-size: 13px;
  line-height: 1.5;
}

.map-spot-info {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  background: rgba(255, 249, 242, 0.94);
  border: 1px solid rgba(149, 84, 63, 0.24);
  border-radius: 12px;
  padding: 10px 12px;
  color: #5f3b33;
  box-shadow: 0 10px 20px rgba(75, 39, 28, 0.18);
  backdrop-filter: blur(4px);
  pointer-events: none;
  font-size: 12px;
}

.map-spot-info h4 {
  margin: 0 0 4px;
  color: #5c2b24;
  font-size: 0.95rem;
}

.map-spot-info p {
  margin: 0;
  line-height: 1.4;
}

.scene-panel {
  padding: 0;
  overflow: hidden;
}

.scene-panel .panel-head {
  padding: 14px 14px 0;
  margin-bottom: 10px;
}

.scene-head {
  align-items: center;
}

.scene-mode-switch {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.scene-mode-switch .button {
  padding: 6px 10px;
  font-size: 12px;
}

.scene-mode-switch .button.active {
  color: #fff4e8;
  background: linear-gradient(120deg, var(--accent), var(--accent-deep));
  border-color: transparent;
}

.scene-panorama {
  padding: 0 14px 10px;
  display: grid;
  gap: 8px;
}

#scenePanoramaImage {
  width: 100%;
  min-height: 280px;
  max-height: 420px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid rgba(150, 82, 61, 0.28);
  background:
    radial-gradient(circle at 22% 16%, rgba(245, 174, 98, 0.24), transparent 38%),
    linear-gradient(180deg, rgba(255, 248, 239, 0.98), rgba(247, 236, 223, 0.96));
}

.scene-panorama-meta {
  margin: 0;
  color: var(--text-muted);
  font-size: 12px;
}

#scene3d {
  width: 100%;
  min-height: 360px;
  background:
    radial-gradient(circle at 25% 18%, rgba(245, 174, 98, 0.24), transparent 40%),
    linear-gradient(180deg, rgba(255, 248, 239, 0.98), rgba(247, 236, 223, 0.96));
}

#scene3d[hidden],
#scenePanorama[hidden] {
  display: none !important;
}

.scene-fallback-notice {
  margin: 0;
  padding: 0 14px;
  color: #8f1a11;
  font-size: 12px;
  font-weight: 700;
}

.scene3d-hint {
  margin: 0;
  padding: 8px 14px 14px;
  color: var(--text-muted);
  font-size: 12px;
}

.leaflet-container {
  font-family: "Outfit", "Noto Serif SC", sans-serif;
  image-rendering: auto;
}

.leaflet-control-layers {
  border-radius: 10px;
  border: 1px solid rgba(146, 78, 58, 0.32);
  box-shadow: 0 8px 20px rgba(70, 38, 30, 0.2);
}

.leaflet-control-layers-expanded {
  background: rgba(255, 249, 242, 0.94);
  color: #5d3028;
}

.leaflet-control-layers label {
  font-size: 13px;
}

.spot-popup .leaflet-popup-content-wrapper {
  background: rgba(255, 249, 242, 0.97);
  color: #432523;
  border: 1px solid rgba(153, 84, 62, 0.22);
  border-radius: 12px;
}

.spot-popup .leaflet-popup-tip {
  background: rgba(255, 249, 242, 0.97);
}

.popup-body {
  min-width: 220px;
  max-width: 270px;
}

.popup-body h4 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.popup-meta {
  margin: 0 0 6px;
  color: #6c3d33;
  font-size: 12px;
}

.popup-address {
  margin: 0 0 6px;
  color: #6f342b;
  font-size: 12px;
  font-weight: 700;
}

.popup-brief {
  margin: 0 0 6px;
  color: #5d3d37;
  font-size: 13px;
}

.popup-intro {
  margin: 0;
  color: #644741;
  font-size: 12px;
  line-height: 1.45;
}

.red-marker {
  background: transparent;
}

.red-marker span {
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #fff5e7;
  box-shadow: 0 0 0 3px rgba(192, 40, 28, 0.26);
  position: relative;
}

.red-marker span::after {
  content: "";
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  border: 1px solid rgba(192, 40, 28, 0.4);
  animation: marker-wave 1.8s infinite ease-out;
}

.extra-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.route-head {
  align-items: center;
}

.route-cards {
  display: grid;
  gap: 10px;
}

.route-plan {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.route-card {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(138, 83, 63, 0.24);
  background: rgba(255, 252, 249, 0.92);
  padding: 12px;
  display: grid;
  gap: 6px;
}

.route-card h4 {
  margin: 0;
  font-size: 0.98rem;
}

.route-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.route-modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.route-mode-chip {
  border-radius: 10px;
  border: 1px solid rgba(144, 80, 60, 0.2);
  background: rgba(254, 246, 238, 0.88);
  padding: 6px 8px;
  font-size: 12px;
  color: #6a3d33;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.route-mode-chip em {
  font-style: normal;
  color: #8f1a11;
  font-weight: 700;
}

.route-card .route-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.route-card button {
  justify-self: start;
}

.route-card.active {
  border-color: rgba(192, 40, 28, 0.68);
  background: rgba(255, 241, 233, 0.94);
}

.plan-summary {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(192, 40, 28, 0.28);
  background: rgba(255, 246, 238, 0.96);
  padding: 12px;
  display: grid;
  gap: 8px;
}

.plan-summary h4 {
  margin: 0;
  font-size: 1rem;
}

.plan-summary p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.plan-summary-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.plan-steps {
  display: grid;
  gap: 8px;
}

.plan-step {
  border-radius: 12px;
  border: 1px solid rgba(141, 85, 64, 0.24);
  background: rgba(255, 252, 249, 0.92);
  padding: 10px 12px;
  display: grid;
  gap: 6px;
  cursor: pointer;
}

.plan-step h5 {
  margin: 0;
  font-size: 0.96rem;
}

.plan-step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.plan-step-transfer {
  color: #7d281f;
  font-size: 12px;
}

.plan-step-mode-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.plan-step-mode {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-radius: 8px;
  border: 1px solid rgba(145, 84, 64, 0.16);
  background: rgba(254, 248, 241, 0.85);
  padding: 6px 8px;
  font-size: 12px;
  color: #6a4037;
}

.plan-step-mode.recommended {
  border-color: rgba(192, 40, 28, 0.42);
  background: rgba(255, 237, 227, 0.9);
  color: #7f241b;
  font-weight: 700;
}

.plan-step-source {
  margin-left: 6px;
  color: #8f1a11;
  font-weight: 700;
}

.plan-step-traffic {
  margin-left: 4px;
  color: #9a4a24;
  font-weight: 700;
}

.map-shanghai-mask {
  pointer-events: none;
}

.button:focus-visible,
.scenic-item:focus-visible,
.plan-step:focus-visible {
  outline: 3px solid rgba(192, 40, 28, 0.42);
  outline-offset: 2px;
}

.timeline {
  display: grid;
  gap: 10px;
}

.time-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 10px;
  align-items: start;
}

.time-year {
  color: var(--accent-deep);
  font-weight: 700;
  font-family: "Outfit", "Noto Serif SC", sans-serif;
}

.time-body {
  border-left: 2px solid rgba(192, 40, 28, 0.28);
  padding-left: 12px;
}

.time-body p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.time-body h4 {
  margin: 0 0 3px;
  font-size: 0.96rem;
}

.poster-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(34, 16, 14, 0.52);
  backdrop-filter: blur(5px);
  display: grid;
  place-items: center;
  padding: 18px;
}

.poster-modal[hidden] {
  display: none !important;
}

.poster-dialog {
  width: min(520px, 96vw);
  max-height: 94vh;
  overflow: auto;
  background: rgba(255, 249, 242, 0.98);
  border: 1px solid rgba(143, 77, 57, 0.24);
  border-radius: 20px;
  box-shadow: 0 24px 40px rgba(63, 30, 24, 0.32);
  padding: 14px;
  display: grid;
  gap: 10px;
}

.poster-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.poster-head h3 {
  margin: 0;
  font-size: 1.08rem;
}

.poster-body {
  border-radius: 14px;
  border: 1px solid rgba(145, 80, 59, 0.24);
  background: rgba(255, 255, 255, 0.7);
  padding: 8px;
}

#posterCanvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.poster-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.poster-actions .button {
  flex: 1 1 160px;
}

.poster-hint {
  margin: 0;
  color: #6c4338;
  font-size: 12px;
}

@keyframes marker-wave {
  from {
    transform: scale(0.8);
    opacity: 0.75;
  }

  to {
    transform: scale(1.35);
    opacity: 0;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1100px) {
  .control-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .button-row {
    grid-column: span 2;
  }

  .travel-model-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .main-grid,
  .extra-grid {
    grid-template-columns: 1fr;
  }

  .scenic-list {
    max-height: 320px;
  }

  #map {
    min-height: 450px;
  }

  #scene3d {
    min-height: 320px;
  }

  #scenePanoramaImage {
    min-height: 240px;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100%, 95vw);
    margin: 14px auto 22px;
  }

  .hero,
  .panel,
  .control-panel {
    border-radius: 18px;
  }

  .control-panel {
    grid-template-columns: 1fr;
  }

  .button-row {
    grid-column: auto;
    width: 100%;
    flex-wrap: wrap;
  }

  .button-row .button {
    flex: 1 1 145px;
  }

  .travel-model-grid {
    grid-template-columns: 1fr;
  }

  .travel-model-actions .button {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  #map {
    min-height: 380px;
  }

  #scene3d {
    min-height: 280px;
  }

  #scenePanoramaImage {
    min-height: 200px;
  }

  .route-modes {
    grid-template-columns: 1fr;
  }
}