:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: #0b1726;
  --panel-raised: #101f30;
  --line: rgba(148, 163, 184, 0.16);
  --text: #e6f0fb;
  --muted: #8ca0b7;
  --cyan: #22d3ee;
  --cyan-soft: rgba(34, 211, 238, 0.14);
  --green: #34d399;
  --amber: #fbbf24;
  --red: #fb7185;
  font-family: Inter, "Segoe UI", "Yu Gothic UI", sans-serif;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
}

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

.app-shell {
  display: grid;
  grid-template-rows: 74px auto minmax(0, 1fr);
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 15% -20%, rgba(34, 211, 238, 0.12), transparent 34%),
    var(--bg);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
}

.brand-block, .status-group, .controls, .panel-heading, .map-legend {
  display: flex;
  align-items: center;
}

.brand-block { gap: 13px; }
.brand-block h1 { margin: 1px 0 0; font-size: 21px; letter-spacing: 0.01em; }
.eyebrow { margin: 0; color: var(--cyan); font-size: 10px; font-weight: 800; letter-spacing: 0.16em; }

.radar-logo, .loading-radar {
  position: relative;
  width: 40px;
  height: 40px;
  overflow: hidden;
  border: 1px solid rgba(34, 211, 238, 0.55);
  border-radius: 50%;
  background: repeating-radial-gradient(circle, transparent 0 8px, rgba(34, 211, 238, 0.13) 9px 10px);
}

.radar-logo::before, .radar-logo::after, .loading-radar::before, .loading-radar::after {
  content: "";
  position: absolute;
  background: rgba(34, 211, 238, 0.25);
}
.radar-logo::before, .loading-radar::before { left: 50%; top: 0; width: 1px; height: 100%; }
.radar-logo::after, .loading-radar::after { top: 50%; left: 0; width: 100%; height: 1px; }
.radar-logo span, .loading-radar span {
  position: absolute;
  left: 50%;
  bottom: 50%;
  width: 46%;
  height: 46%;
  transform-origin: left bottom;
  animation: sweep 2.8s linear infinite;
  background: linear-gradient(25deg, rgba(34, 211, 238, 0.4), transparent 65%);
}
@keyframes sweep { to { transform: rotate(360deg); } }

.status-group { gap: 8px; color: var(--muted); font-size: 13px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #64748b; box-shadow: 0 0 0 4px rgba(100,116,139,.1); }
.status-dot.online { background: var(--green); box-shadow: 0 0 12px var(--green); }
.status-dot.loading { background: var(--amber); animation: pulse 1s infinite alternate; }
.status-dot.error { background: var(--red); }
@keyframes pulse { to { opacity: .35; } }
.update-time { margin-left: 8px; padding-left: 15px; border-left: 1px solid var(--line); font-variant-numeric: tabular-nums; }

.controls {
  z-index: 2;
  gap: 12px;
  min-height: 72px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 31, 0.84);
  backdrop-filter: blur(12px);
}
.controls label { display: grid; gap: 4px; }
.controls label > span { color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .08em; }
select, .search-box, button {
  border: 1px solid var(--line);
  border-radius: 9px;
}
select {
  min-width: 145px;
  padding: 9px 34px 9px 11px;
  color: var(--text);
  background: var(--panel-raised);
  outline: none;
}
button { cursor: pointer; transition: .18s ease; }
button:hover { transform: translateY(-1px); border-color: rgba(34, 211, 238, .5); }
button:disabled { cursor: wait; opacity: .65; }
.primary-button, .secondary-button { align-self: end; height: 39px; padding: 0 15px; font-weight: 700; font-size: 13px; }
.primary-button { margin-left: auto; border-color: transparent; background: var(--cyan); color: #03202a; }
.secondary-button { background: var(--panel-raised); }
.view-switch { display: flex; align-self: end; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel-raised); }
.view-button { height: 31px; padding: 0 11px; border: 0; border-radius: 7px; background: transparent; color: var(--muted); font-size: 12px; font-weight: 700; }
.view-button:hover { transform: none; border-color: transparent; color: var(--text); }
.view-button.active { background: var(--cyan); color: #03202a; box-shadow: 0 3px 12px rgba(34,211,238,.2); }
.refresh-icon { display: inline-block; margin-right: 5px; font-size: 17px; vertical-align: -1px; }
.loading .refresh-icon { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.workspace { display: grid; grid-template-columns: minmax(0, 1fr) 380px; min-height: 0; }
.map-panel { position: relative; min-width: 0; min-height: 0; }
#map { width: 100%; height: 100%; background: #09131e; }
#map.view-hidden { visibility: hidden; }
#airspace-3d { position: absolute; inset: 0; width: 100%; height: 100%; outline: none; cursor: grab; touch-action: none; }
#airspace-3d:active { cursor: grabbing; }
#airspace-3d:focus-visible { box-shadow: inset 0 0 0 2px var(--cyan); }
.three-d-toolbar {
  position: absolute;
  z-index: 510;
  top: 16px;
  left: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(34,211,238,.25);
  border-radius: 9px;
  background: rgba(7,17,31,.9);
}
.three-d-toolbar > div { display: grid; gap: 2px; padding: 0 5px; }
.three-d-toolbar strong { color: var(--cyan); font-size: 11px; letter-spacing: .08em; }
.three-d-toolbar span { color: var(--muted); font-size: 9px; }
.three-d-toolbar button { height: 29px; padding: 0 9px; border-color: rgba(148,163,184,.2); background: var(--panel-raised); color: var(--text); font-size: 10px; font-weight: 700; }
.three-d-toolbar button:hover { transform: none; background: rgba(34,211,238,.12); }
.three-d-toolbar .angle-button.active { border-color: rgba(34,211,238,.55); background: rgba(34,211,238,.18); color: var(--cyan); }
.three-d-selection {
  position: absolute;
  z-index: 510;
  right: 16px;
  top: 16px;
  min-width: 190px;
  padding: 10px 12px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 9px;
  background: rgba(7,17,31,.92);
  box-shadow: 0 12px 35px rgba(0,0,0,.3);
}
.three-d-selection strong { display: block; margin-bottom: 5px; font-size: 14px; }
.three-d-selection span { display: block; color: var(--muted); font-size: 10px; line-height: 1.55; }
.leaflet-tile-pane { filter: saturate(.7) brightness(.72) contrast(1.15) hue-rotate(160deg); }
.leaflet-control-zoom a { color: var(--text) !important; background: var(--panel-raised) !important; border-color: var(--line) !important; }
.leaflet-control-attribution { display: none; }

.map-legend {
  position: absolute;
  z-index: 500;
  left: 18px;
  bottom: 18px;
  gap: 16px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(7, 17, 31, .9);
  color: var(--muted);
  font-size: 11px;
  box-shadow: 0 10px 35px rgba(0,0,0,.25);
}

.altitude-legend {
  position: absolute;
  z-index: 500;
  right: 18px;
  bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(7,17,31,.9);
  color: var(--muted);
  font-size: 9px;
  box-shadow: 0 10px 35px rgba(0,0,0,.25);
}
.altitude-legend strong { color: var(--text); font-size: 9px; }
.altitude-legend span { display: flex; align-items: center; gap: 4px; white-space: nowrap; }
.alt-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 7px currentColor; }
.alt-ground { color: #fbbf24 !important; }
.alt-low { color: #34d399 !important; }
.alt-mid { color: #22d3ee !important; }
.alt-high { color: #60a5fa !important; }
.alt-very-high { color: #c084fc !important; }
.alt-unknown { color: #94a3b8 !important; }
.map-panel.view-3d .scan-hint,
.map-panel.view-3d .map-legend { display: none; }

.scan-hint {
  position: absolute;
  z-index: 500;
  top: 16px;
  left: 50%;
  display: grid;
  gap: 2px;
  min-width: 340px;
  padding: 10px 14px;
  transform: translateX(-50%);
  border: 1px solid rgba(34, 211, 238, .24);
  border-radius: 10px;
  background: rgba(7, 17, 31, .9);
  box-shadow: 0 10px 35px rgba(0,0,0,.22);
  text-align: center;
  pointer-events: none;
}
.scan-hint strong { color: var(--text); font-size: 12px; }
.scan-hint span { color: var(--muted); font-size: 10px; }
.scan-hint small { margin-top: 2px; color: var(--cyan); font-size: 9px; font-variant-numeric: tabular-nums; }
.legend-plane { width: 13px; height: 13px; margin-right: 4px; fill: currentColor; vertical-align: -2px; }
.flying { color: var(--cyan); }
.ground { color: var(--amber); }

.aircraft-panel {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  min-height: 0;
  border-left: 1px solid var(--line);
  background: var(--panel);
}
.panel-heading { justify-content: space-between; padding: 20px 20px 14px; }
.panel-heading h2 { margin: 3px 0 0; font-size: 15px; font-weight: 500; color: var(--muted); }
.panel-heading h2 strong { color: var(--text); font-size: 27px; }
.source-badge { padding: 6px 8px; border: 1px solid rgba(52,211,153,.26); border-radius: 20px; background: rgba(52,211,153,.08); color: var(--green); font-size: 10px; font-weight: 800; }

.search-box { display: flex; align-items: center; gap: 8px; margin: 0 20px 12px; padding: 0 11px; background: rgba(255,255,255,.03); color: var(--muted); }
.search-box:focus-within { border-color: rgba(34,211,238,.45); box-shadow: 0 0 0 3px var(--cyan-soft); }
.search-box input { width: 100%; padding: 10px 0; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 13px; }
.search-box input::placeholder { color: #60758c; }

.aircraft-list { min-height: 0; padding: 0 10px 12px; overflow-y: auto; scrollbar-color: #294159 transparent; scrollbar-width: thin; }
.aircraft-card {
  display: grid;
  grid-template-columns: 35px minmax(0, 1fr) auto;
  align-items: center;
  width: 100%;
  gap: 10px;
  padding: 12px 10px;
  border-color: transparent;
  border-bottom-color: var(--line);
  border-radius: 7px;
  background: transparent;
  text-align: left;
}
.aircraft-card:hover { transform: none; border-color: rgba(34,211,238,.18); background: rgba(34,211,238,.05); }
.card-plane { display: grid; place-items: center; width: 25px; height: 25px; transform-origin: center; filter: drop-shadow(0 2px 3px rgba(0,0,0,.55)); }
.card-main, .card-data { display: grid; gap: 3px; min-width: 0; }
.card-main strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; letter-spacing: .04em; }
.card-main small, .card-data small { color: var(--muted); font-size: 10px; }
.card-data { text-align: right; }
.card-data strong { font-size: 12px; font-variant-numeric: tabular-nums; }

.empty-state, .error-state { display: grid; place-items: center; align-content: center; min-height: 210px; padding: 28px; text-align: center; color: var(--muted); font-size: 13px; }
.empty-state .loading-radar { width: 54px; height: 54px; margin-bottom: 12px; }
.empty-plane { margin-bottom: 8px; color: #51677e; font-size: 34px; }
.error-state { color: #fda4af; }
.error-state p { margin: 6px 0 0; color: var(--muted); }
.panel-footer { display: flex; justify-content: space-between; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--line); color: #60758c; font-size: 9px; }

.aircraft-icon-wrap { background: transparent; border: 0; }
.aircraft-icon { display: grid; place-items: center; width: 30px; height: 30px; transform-origin: center; filter: drop-shadow(0 3px 5px rgba(0,0,0,.65)); transition: transform .4s ease; }
.aircraft-glyph { display: block; width: 100%; height: 100%; fill: currentColor; stroke: rgba(3, 20, 30, .72); stroke-width: 1.4; stroke-linejoin: round; }
.aircraft-icon.in-flight { color: var(--cyan); text-shadow: 0 0 9px rgba(34,211,238,.75); }
.aircraft-icon.on-ground { color: var(--amber); }
.aircraft-icon.alt-ground, .card-plane.alt-ground { color: #fbbf24; }
.aircraft-icon.alt-low, .card-plane.alt-low { color: #34d399; }
.aircraft-icon.alt-mid, .card-plane.alt-mid { color: #22d3ee; }
.aircraft-icon.alt-high, .card-plane.alt-high { color: #60a5fa; }
.aircraft-icon.alt-very-high, .card-plane.alt-very-high { color: #c084fc; }
.aircraft-icon.alt-unknown, .card-plane.alt-unknown { color: #94a3b8; }
.leaflet-popup-content-wrapper, .leaflet-popup-tip { background: #0d1d2d; color: var(--text); }
.leaflet-popup-content-wrapper { border: 1px solid rgba(34,211,238,.25); border-radius: 11px; box-shadow: 0 18px 50px rgba(0,0,0,.45); }
.aircraft-popup { min-width: 220px; }
.aircraft-popup h3 { margin: 2px 0 12px; font-size: 20px; }
.popup-kicker { margin: 0; color: var(--cyan); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.aircraft-popup dl { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 14px; margin: 0; }
.aircraft-popup dl div { display: grid; gap: 2px; }
.aircraft-popup dt { color: var(--muted); font-size: 9px; }
.aircraft-popup dd { margin: 0; font-size: 12px; font-weight: 700; }

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

@media (max-width: 850px) {
  .app-shell { grid-template-rows: 64px auto minmax(0, 1fr); }
  .topbar { padding: 0 14px; }
  .brand-block h1 { font-size: 17px; }
  .radar-logo { width: 34px; height: 34px; }
  .status-group #status-text, .update-time { display: none; }
  .controls { gap: 8px; padding: 9px 12px; overflow-x: auto; }
  .controls label > span { display: none; }
  select { min-width: 112px; height: 38px; }
  .world-button { display: none; }
  .view-switch { flex: 0 0 auto; }
  .primary-button { min-width: 108px; white-space: nowrap; }
  .workspace { grid-template-columns: 1fr; grid-template-rows: minmax(300px, 58%) minmax(0, 42%); }
  .aircraft-panel { border-top: 1px solid var(--line); border-left: 0; }
  .panel-heading { padding: 10px 14px 7px; }
  .panel-heading h2 { margin: 0; }
  .panel-heading h2 strong { font-size: 20px; }
  .search-box { margin: 0 14px 7px; }
  .map-legend { left: 8px; bottom: 8px; }
  .map-legend span:nth-child(3) { display: none; }
  .scan-hint { top: 8px; min-width: 250px; padding: 7px 9px; }
  .scan-hint span { display: none; }
  .altitude-legend { right: 8px; bottom: 8px; max-width: calc(100% - 16px); gap: 7px; overflow-x: auto; }
  .altitude-legend strong { display: none; }
  .three-d-toolbar { top: 8px; left: 8px; }
  .three-d-toolbar span { display: none; }
  .three-d-toolbar button { padding: 0 7px; }
  .three-d-selection { top: 8px; right: 8px; min-width: 160px; }
  .panel-footer { display: none; }
}