:root {
  color-scheme: light;
  --app-bg: #e9eef4;
  --panel: #ffffff;
  --panel-soft: #f6f8fb;
  --line: #d7dee9;
  --line-strong: #aeb9c8;
  --text: #182230;
  --muted: #667085;
  --control-accent: #0e7490;
  --control-accent-soft: rgba(14, 116, 144, 0.12);
  --scene-bg: #050a1a;
  --scene-glow: #0d1e3a;
  --country: #0c1c34;
  --country-stroke: #1d3e66;
  --grid-line: #163766;
  --route: #4dd4ff;
  --route-active: #eaf8ff;
  --city: #4dd4ff;
  --label: #d8ecff;
  --label-muted: #7da3cf;
  --ocean: #0d2148;
  --ocean-light: #33547e;
  --ocean-dark: #071224;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0) 46%),
    var(--app-bg);
  color: var(--text);
  font-family: var(--font);
}

button,
input {
  font: inherit;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 16px;
  padding: 16px;
}

.preview,
.console {
  min-width: 0;
  background: var(--panel);
  border: 1px solid rgba(174, 185, 200, 0.7);
  box-shadow: 0 22px 70px rgba(24, 34, 48, 0.12);
}

.preview {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  border-radius: 8px;
}

.preview-bar {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, var(--panel), var(--panel-soft));
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 21px;
  line-height: 1.2;
  font-weight: 760;
}

h2 {
  font-size: 20px;
  line-height: 1.2;
  font-weight: 760;
}

h3 {
  font-size: 14px;
  line-height: 1.2;
  font-weight: 760;
}

.meta {
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.status {
  flex: 0 0 auto;
  min-width: 104px;
  padding: 9px 12px;
  border: 1px solid rgba(14, 116, 144, 0.24);
  border-radius: 999px;
  background: var(--control-accent-soft);
  color: var(--control-accent);
  font-size: 13px;
  font-weight: 760;
  text-align: center;
  white-space: nowrap;
}

.stage-wrap {
  min-height: 520px;
  padding: 18px;
  background: #101828;
}

.stage {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: calc(100vh - 130px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background: var(--scene-bg);
}

#worldMapGlobeSvg {
  width: 100%;
  height: 100%;
  display: block;
}

.console {
  border-radius: 8px;
  padding: 22px;
  overflow: auto;
}

.console-head {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.section {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
}

.mode-btn {
  min-height: 40px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-weight: 700;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.mode-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.72);
}

.mode-btn.active {
  color: #ffffff;
  border-color: rgba(14, 116, 144, 0.45);
  background: var(--control-accent);
  box-shadow: 0 9px 24px rgba(14, 116, 144, 0.22);
}

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

.color-field {
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr 44px;
  align-items: center;
  gap: 8px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
}

.color-field span {
  min-width: 0;
  color: var(--text);
  font-size: 13px;
  font-weight: 680;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.color-field input {
  width: 44px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 110px;
  gap: 10px;
  margin-top: 16px;
}

.primary,
.secondary {
  min-height: 42px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 760;
}

.primary {
  border: 1px solid rgba(14, 116, 144, 0.45);
  background: var(--control-accent);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(14, 116, 144, 0.22);
}

.secondary {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--text);
}

.theme-note {
  min-height: 18px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.route-settings {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

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

.route-settings-head span {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 12px;
}

.route-city-list {
  display: grid;
  gap: 8px;
  max-height: 280px;
  overflow: auto;
  padding-right: 2px;
}

.route-city-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
}

.route-city-index {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(14, 116, 144, 0.22);
  border-radius: 8px;
  background: var(--control-accent-soft);
  color: var(--control-accent);
  font-size: 12px;
  font-weight: 760;
}

.route-city-select {
  width: 100%;
  min-width: 0;
  height: 36px;
  padding: 0 34px 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  cursor: pointer;
}

.route-city-select:focus {
  border-color: var(--control-accent);
  outline: 3px solid rgba(14, 116, 144, 0.14);
}

.route-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.route-actions .secondary {
  min-height: 36px;
  font-size: 13px;
}

.preset-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.preset {
  position: relative;
  height: 38px;
  padding: 3px;
  border: 1px solid var(--p2);
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff, var(--panel-soft));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.72);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.preset:hover {
  border-color: var(--p3);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.78), 0 8px 18px rgba(24, 34, 48, 0.1);
}

.preset:focus-visible {
  outline: 3px solid rgba(14, 116, 144, 0.22);
  outline-offset: 2px;
}

.preset.active,
.preset[aria-pressed="true"] {
  border-color: var(--p3);
  box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px var(--p3), 0 10px 24px rgba(24, 34, 48, 0.12);
}

.preset::after {
  content: "";
  position: absolute;
  top: 7px;
  right: 7px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #ffffff;
  box-shadow: 0 0 0 2px var(--p3), 0 0 12px var(--p3);
  opacity: 0;
  transform: scale(0.72);
  transition: opacity 160ms ease, transform 160ms ease;
}

.preset.active::after,
.preset[aria-pressed="true"]::after {
  opacity: 1;
  transform: scale(1);
}

.preset span {
  display: block;
  height: 100%;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--p1), var(--p2) 50%, var(--p3));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.country {
  fill: var(--country);
  stroke: var(--country-stroke);
  stroke-width: 0.56;
}

body[data-mode="globe"] .country {
  stroke-width: 0.38;
}

.graticule {
  fill: none;
  stroke: var(--grid-line);
  stroke-width: 0.42;
  stroke-dasharray: 2, 4;
  opacity: 0.64;
}

body[data-mode="globe"] .graticule {
  stroke-width: 0.3;
  stroke-dasharray: none;
  opacity: 0.56;
}

.route-base,
.route-drawn {
  fill: none;
  stroke: var(--route);
  stroke-width: 1.45;
  stroke-linecap: round;
  filter: url(#glow);
}

.route-base {
  opacity: 0.56;
}

.route-active,
.route-highlight {
  fill: none;
  stroke: var(--route-active);
  stroke-width: 2.55;
  stroke-linecap: round;
  filter: url(#glowStrong);
}

.route-active {
  stroke-width: 2.35;
}

.arc-head {
  fill: var(--route-active);
  filter: url(#glowStrong);
}

.city-dot-outer {
  fill: var(--city);
  filter: url(#glow);
}

.city-dot-inner {
  fill: var(--route-active);
}

.city-pulse {
  fill: none;
  stroke: var(--city);
  stroke-width: 1.5;
  opacity: 0;
}

.city-label {
  fill: var(--label);
  font-size: 14px;
  font-weight: 700;
  text-anchor: middle;
  paint-order: stroke;
  stroke: var(--scene-bg);
  stroke-width: 3.3;
  stroke-linejoin: round;
}

.city-label-en {
  fill: var(--label-muted);
  font-size: 9.8px;
  font-weight: 500;
  text-anchor: middle;
  paint-order: stroke;
  stroke: var(--scene-bg);
  stroke-width: 2.4;
  stroke-linejoin: round;
  letter-spacing: 1px;
}

.star {
  fill: #ffffff;
}

.stop-bg-inner {
  stop-color: var(--scene-glow);
}

.stop-bg-outer {
  stop-color: var(--scene-bg);
}

.stop-ocean-light {
  stop-color: var(--ocean-light);
}

.stop-ocean-main {
  stop-color: var(--ocean);
}

.stop-ocean-dark {
  stop-color: var(--ocean-dark);
}

.stop-atm {
  stop-color: var(--route);
}

#globeShell,
#stars {
  display: none;
}

body[data-mode="globe"] #globeShell,
body[data-mode="globe"] #stars {
  display: block;
}

@media (max-width: 1020px) {
  .app {
    grid-template-columns: 1fr;
  }

  .console {
    max-height: none;
  }

  .stage {
    min-height: 64vh;
  }
}

@media (max-width: 620px) {
  .app {
    padding: 10px;
  }

  .preview-bar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .stage-wrap {
    padding: 10px;
  }

  .stage {
    min-height: 56vh;
  }

  .color-grid,
  .actions,
  .route-actions {
    grid-template-columns: 1fr;
  }
}