:root {
  color-scheme: light;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --page-bg: #929c8e;
  --panel-bg: rgba(93, 103, 91, .9);
  --panel-border: rgba(232, 182, 111, .48);
  --text: #f1dfc0;
  --muted: #d5c5a8;
  --accent: #efb467;
  --accent-soft: rgba(239, 180, 103, .24);
  --healthy: #9fd49f;
  --warning: #dc8b67;
  --shadow: rgba(61, 47, 37, .28);
  --aircraft: #e98538;
  --aircraft-card: rgba(91, 80, 68, .94);
  --aircraft-card-selected: rgba(104, 86, 65, .98);
  --aircraft-text: #f2dfba;
}

body.theme-night {
  color-scheme: dark;
  --page-bg: #554a43;
  --panel-bg: rgba(91, 70, 53, .92);
  --panel-border: rgba(226, 164, 86, .52);
  --text: #efd6a9;
  --muted: #cfb58b;
  --accent: #e9a354;
  --accent-soft: rgba(233, 163, 84, .25);
  --healthy: #9ac89d;
  --warning: #d78262;
  --shadow: rgba(57, 42, 33, .32);
  --aircraft: #ee963f;
  --aircraft-card: rgba(91, 68, 49, .95);
  --aircraft-card-selected: rgba(111, 76, 47, .98);
  --aircraft-text: #efd5a4;
}

body.contour-theme {
  color-scheme: dark;
  --page-bg: #684923;
  --panel-bg: rgba(111, 75, 38, .94);
  --panel-border: rgba(239, 180, 94, .58);
  --text: #f0d09a;
  --muted: #d9b77e;
  --accent: #efb45e;
  --accent-soft: rgba(239, 180, 94, .26);
  --shadow: rgba(71, 48, 29, .34);
  --aircraft: #efb45e;
  --aircraft-card: rgba(104, 70, 35, .96);
  --aircraft-card-selected: rgba(126, 82, 37, .98);
  --aircraft-text: #f1d39e;
}

html, body, #map {
  height: 100%;
  margin: 0;
}

body, #map {
  background: var(--page-bg);
}

.status, .controls {
  position: fixed;
  z-index: 10;
  color: var(--text);
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  box-shadow: 0 8px 24px var(--shadow);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.status {
  top: max(14px, env(safe-area-inset-top));
  left: max(14px, env(safe-area-inset-left));
  display: flex;
  gap: 9px;
  padding: 9px 12px;
  font-size: 13px;
}

.dot {
  width: 8px;
  height: 8px;
  margin-top: 4px;
  border-radius: 50%;
  background: var(--warning);
}

.dot.live {
  background: var(--healthy);
  box-shadow: 0 0 8px color-mix(in srgb, var(--healthy) 55%, transparent);
}

#cell {
  color: var(--accent);
}

.controls {
  top: calc(max(14px, env(safe-area-inset-top)) + 50px);
  left: max(14px, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

button {
  min-width: 44px;
  min-height: 42px;
  padding: 8px 11px;
  border: 0;
  border-bottom: 1px solid var(--panel-border);
  color: inherit;
  background: transparent;
  cursor: pointer;
  font: inherit;
}

button:last-child { border-bottom: 0; }
button:hover, button.active { background: var(--accent-soft); }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.project-info-button {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 20;
  display: grid;
  width: 46px;
  min-width: 46px;
  height: 46px;
  min-height: 46px;
  padding: 9px;
  place-items: center;
  border: 1px solid var(--panel-border);
  border-radius: 50%;
  color: var(--accent);
  background: var(--panel-bg);
  box-shadow: 0 6px 18px var(--shadow);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.project-info-button svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.project-dialog {
  width: 100vw;
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 0;
  color: var(--text);
  background: transparent;
}

.project-dialog::backdrop { background: rgba(71, 53, 39, .42); }

.project-page {
  box-sizing: border-box;
  display: grid;
  width: 100%;
  height: 100%;
  grid-template-rows: auto minmax(0, 1fr);
  padding: clamp(1.25rem, 4vw, 4rem);
  overflow: auto;
  background: var(--page-bg);
}

.project-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.eyebrow {
  margin: 0 0 .4rem;
  color: var(--muted);
  font-size: .76rem;
  font-weight: 750;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.project-heading h1 {
  max-width: 980px;
  margin: 0;
  color: var(--text);
  font-size: clamp(2.7rem, 7vw, 7rem);
  font-weight: 520;
  letter-spacing: -.06em;
  line-height: .92;
}

.project-close {
  flex: 0 0 auto;
  width: 48px;
  min-width: 48px;
  height: 48px;
  min-height: 48px;
  padding: 0;
  border: 1px solid var(--panel-border);
  border-radius: 50%;
  color: var(--accent);
  background: var(--panel-bg);
  font-size: 2rem;
  line-height: 1;
}

.project-body {
  display: grid;
  min-height: 0;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: center;
  padding: 2rem 0 1rem;
}

.project-copy { max-width: 760px; }
.project-copy p {
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.22rem);
  line-height: 1.58;
}
.project-copy .project-lead {
  margin-top: 0;
  color: var(--text);
  font-size: clamp(1.45rem, 2.7vw, 2.7rem);
  letter-spacing: -.035em;
  line-height: 1.17;
}
.project-copy code {
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.station-facts {
  display: grid;
  gap: .55rem;
  margin: 1.6rem 0 0;
}
.station-facts div {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1rem;
  padding-top: .55rem;
  border-top: 1px solid var(--panel-border);
}
.station-facts dt { color: var(--muted); }
.station-facts dd { margin: 0; color: var(--text); }

.interaction-guide { margin-top: 1.8rem; }
.interaction-guide h2 {
  margin: 0 0 .7rem;
  color: var(--text);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.interaction-guide > div {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .6rem;
}
.interaction-guide p {
  display: grid;
  align-content: start;
  gap: .35rem;
  margin: 0;
  padding: .75rem;
  border: 1px solid var(--panel-border);
  border-radius: 7px;
  background: var(--accent-soft);
  font-size: .84rem;
  line-height: 1.4;
}
.interaction-guide strong { color: var(--text); }
.interaction-guide span { color: var(--muted); }

.source-links {
  display: grid;
  gap: .6rem;
}
.source-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(.85rem, 1.6vw, 1.25rem);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  color: var(--text);
  background: var(--panel-bg);
  box-shadow: 0 4px 14px var(--shadow);
  text-decoration: none;
}
.source-links a:hover, .source-links a:focus-visible {
  border-color: var(--accent);
  background: var(--aircraft-card-selected);
}
.source-links a > span:first-child { display: grid; gap: .16rem; }
.source-links strong { font-size: 1rem; }
.source-links small { color: var(--muted); font-size: .82rem; line-height: 1.3; }
.source-links a > span:last-child { color: var(--accent); font-size: 1.25rem; }

.aircraft-anchor {
  --lift: 0;
  position: relative;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.aircraft-shadow {
  position: absolute;
  left: -4px;
  top: -2px;
  width: 8px;
  height: 4px;
  border-radius: 50%;
  background: rgba(70, 51, 37, .5);
  box-shadow: 0 0 7px rgba(70, 51, 37, .42);
}

.aircraft-stem {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 1px;
  height: calc(var(--lift) * 1px);
  background: linear-gradient(to top, color-mix(in srgb, var(--accent) 8%, transparent), var(--accent));
  transform: translateX(-.5px);
  transition: height 320ms ease;
}

.aircraft-object {
  position: absolute;
  left: 0;
  bottom: calc(var(--lift) * 1px);
  display: flex;
  align-items: center;
  gap: 5px;
  transform: translate3d(-10px, 5px, 0);
  transition: bottom 320ms ease, opacity 1s linear;
  will-change: bottom, transform;
  pointer-events: auto;
  cursor: pointer;
  touch-action: manipulation;
  outline: none;
}

.aircraft-glyph {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  color: var(--aircraft);
  filter: drop-shadow(0 1px 3px rgba(67, 45, 31, .62));
  transform: rotate(calc(var(--heading, 0) * 1deg));
  transition: transform 320ms ease;
}

.aircraft-label {
  display: flex;
  flex-direction: column;
  padding: 2px 5px;
  border: 1px solid var(--accent);
  border-radius: 3px;
  color: var(--aircraft-text);
  background: var(--aircraft-card);
  box-shadow: 0 1px 6px var(--shadow);
  font-size: 11px;
  line-height: 1.2;
  white-space: nowrap;
  transition: background 180ms ease, box-shadow 180ms ease;
}

.aircraft-summary { font-weight: 650; }

.aircraft-details {
  display: grid;
  width: 218px;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 180ms ease, margin-top 180ms ease, opacity 140ms ease;
}

.aircraft-detail-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 8px;
  padding: 2px 0;
  border-top: 1px solid var(--panel-border);
}

.aircraft-detail-key { color: var(--muted); }
.aircraft-detail-value { overflow: hidden; text-align: right; text-overflow: ellipsis; }

.aircraft-anchor.selected { z-index: 10000 !important; }
.aircraft-anchor.selected .aircraft-label {
  background: var(--aircraft-card-selected);
  box-shadow: 0 8px 22px var(--shadow);
}
.aircraft-anchor.selected .aircraft-details {
  max-height: 220px;
  margin-top: 5px;
  opacity: 1;
}
.aircraft-object:focus-visible .aircraft-label { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 560px) {
  .status { font-size: 12px; }
  .controls { top: calc(max(14px, env(safe-area-inset-top)) + 48px); }
  button { padding: 7px 9px; font-size: 12px; }
  .aircraft-label { font-size: 10px; }
  .aircraft-details { width: 194px; }
  .aircraft-detail-row { grid-template-columns: 70px minmax(0, 1fr); }
}

@media (max-width: 800px) {
  .project-page { display: block; padding: 1.15rem; }
  .project-heading { position: sticky; top: 0; z-index: 1; padding-bottom: 1rem; background: var(--page-bg); }
  .project-heading h1 { font-size: clamp(2.45rem, 12vw, 4.5rem); }
  .project-body { display: block; padding-top: 1rem; }
  .source-links { margin-top: 2rem; }
  .station-facts div { grid-template-columns: 7.5rem minmax(0, 1fr); }
  .interaction-guide > div { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .aircraft-object, .aircraft-stem, .aircraft-glyph { transition: none; }
}