:root {
  --bg: #0c0f14;
  --fg: #e8eefc;
  --accent: #5cc8ff;
  --muted: #95a2b3;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg); font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
header { padding: 12px 16px; border-bottom: 1px solid #1e2733; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
h1 { font-size: 20px; margin: 0; }
.controls { display: flex; align-items: center; gap: 12px; color: var(--muted); }
label { display: inline-flex; align-items: center; gap: 8px; }
input { background: #111723; color: var(--fg); border: 1px solid #223042; padding: 6px 8px; border-radius: 6px; width: 90px; }
button { background: #1e7bbf; color: white; border: none; padding: 8px 12px; border-radius: 6px; cursor: pointer; }
button:hover { background: #2196dc; }
#timestamp { color: var(--muted); }
main { display: grid; grid-template-columns: 1fr 300px; gap: 16px; padding: 16px; position: relative; }
#canvas { width: 100%; aspect-ratio: 1; max-width: min(80vh, 100%); background: #0a0e13; border: 1px solid #1e2733; border-radius: 8px; }
.zoom-control { position: fixed; top: 80px; left: 20px; background: rgba(10, 14, 19, 0.9); border: 1px solid #1e2733; border-radius: 8px; padding: 12px; display: flex; align-items: center; gap: 8px; z-index: 100; }
.zoom-control label { color: var(--muted); font-size: 12px; }
.zoom-control input[type="range"] { width: 120px; }
.zoom-control span { color: var(--fg); font-size: 12px; min-width: 40px; }
aside { background: #0a0e13; border: 1px solid #1e2733; border-radius: 8px; padding: 12px; }
#spacecraft-controls { 
  border-bottom: 1px solid #1e2733; 
  padding-bottom: 16px; 
  margin-bottom: 16px;
}
#spacecraft-controls h3 { 
  margin: 0 0 12px 0; 
  font-size: 14px; 
  color: var(--accent);
}
#spacecraft-toggles label {
  font-size: 11px;
  padding: 4px 6px;
  border-radius: 4px;
  transition: background-color 0.2s;
}
#spacecraft-toggles label:hover {
  background: rgba(92, 200, 255, 0.1);
}
#spacecraft-toggles input[type="checkbox"] {
  width: auto;
  margin: 0;
}
#showAllSpacecraft, #hideAllSpacecraft {
  font-size: 11px;
  padding: 4px 8px;
  background: #2a3441;
  border-radius: 4px;
}
#showAllSpacecraft:hover, #hideAllSpacecraft:hover {
  background: #3a4451;
}
ul { margin: 8px 0 0; padding-left: 18px; }
.note { color: var(--muted); font-size: 12px; }