:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #1f2937;
  --panel-3: #0b1220;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --line: #334155;
  --accent: #38bdf8;
  --accent-2: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
  --select: #f8fafc;
  --shadow: 0 10px 30px rgba(0,0,0,.28);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #020617 0%, #0f172a 100%);
  color: var(--text);
}

.app-shell {
  max-width: 1560px;
  margin: 0 auto;
  padding: 18px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  background: rgba(17, 24, 39, .95);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

.topbar h1 {
  margin: 0;
  font-size: 1.5rem;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--muted);
}

.topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: .92rem;
}

select, button {
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  padding: 10px 12px;
  font: inherit;
}

button {
  cursor: pointer;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
}

button:hover { transform: translateY(-1px); }
button:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 16px;
}

.map-panel, .card {
  background: rgba(17, 24, 39, .96);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.map-panel {
  padding: 14px;
  min-height: 760px;
}

.panel-title-row, .card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-title-row h2, .card h2 {
  margin: 0;
  font-size: 1.05rem;
}

.status-pill {
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, .5);
  color: #dbeafe;
  background: rgba(56, 189, 248, .14);
  font-size: .9rem;
}

#mapSvg {
  width: 100%;
  height: calc(100% - 44px);
  min-height: 680px;
  background: #d6d3d1;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, .18);
}

.sidebar {
  display: grid;
  gap: 16px;
  align-content: start;
}

.card {
  padding: 14px;
}

.selected-empty {
  color: var(--muted);
  background: var(--panel-3);
  border-radius: 14px;
  border: 1px dashed var(--line);
  padding: 12px;
}

.selected-card {
  display: grid;
  gap: 8px;
  background: var(--panel-3);
  border-radius: 14px;
  border: 1px solid var(--line);
  padding: 12px;
}

.selected-card .title-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.selected-card .callsign {
  font-size: 1.1rem;
  font-weight: 700;
}

.selected-card .badge {
  font-size: .78rem;
  border-radius: 999px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.meta-grid, .status-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.meta-item, .status-item {
  background: var(--panel-3);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 9px 10px;
}

.meta-item .k, .status-item .k {
  display: block;
  color: var(--muted);
  font-size: .78rem;
  margin-bottom: 4px;
}

.command-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.command-btn.primary {
  border-color: rgba(34, 197, 94, .55);
  background: rgba(34, 197, 94, .14);
}

.command-btn.warn {
  border-color: rgba(245, 158, 11, .55);
  background: rgba(245, 158, 11, .16);
}

.command-btn.danger {
  border-color: rgba(239, 68, 68, .55);
  background: rgba(239, 68, 68, .14);
}

.traffic-card { min-height: 240px; }
.traffic-list {
  display: grid;
  gap: 8px;
  max-height: 270px;
  overflow: auto;
}

.traffic-item {
  background: var(--panel-3);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px;
  display: grid;
  gap: 6px;
  cursor: pointer;
}

.traffic-item.selected {
  border-color: rgba(248, 250, 252, .7);
  box-shadow: inset 0 0 0 1px rgba(248, 250, 252, .4);
}

.traffic-item .row-1, .traffic-item .row-2 {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.traffic-item .state {
  color: var(--muted);
  font-size: .86rem;
}

.log-card { min-height: 200px; }
.log-panel {
  max-height: 220px;
  overflow: auto;
  display: grid;
  gap: 6px;
}

.log-entry {
  background: var(--panel-3);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px;
  font-size: .9rem;
}

.log-entry .time {
  color: var(--muted);
  margin-right: 8px;
}

.ghost-btn {
  padding: 8px 10px;
  background: transparent;
}

/* map */
.map-label {
  font-size: 18px;
  font-weight: 600;
  fill: #0f172a;
  text-anchor: middle;
  pointer-events: none;
}

.small-label {
  font-size: 13px;
  font-weight: 700;
  fill: #475569;
}

.route-label {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  fill: #111827;
}

.aircraft {
  cursor: pointer;
}

.aircraft.selected .symbol-stroke {
  stroke: #111827;
  stroke-width: 4;
}

@media (max-width: 1180px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .map-panel {
    min-height: 620px;
  }

  #mapSvg {
    min-height: 560px;
  }
}

@media (max-width: 640px) {
  .app-shell { padding: 10px; }
  .topbar { padding: 12px; border-radius: 16px; }
  .map-panel, .card { border-radius: 16px; }
  .command-panel { grid-template-columns: 1fr; }
  .meta-grid, .status-grid { grid-template-columns: 1fr; }
  #mapSvg { min-height: 440px; }
}