:root {
  --bg: #0b1016; --surface: #141b24; --elevated: #1b2430; --outline: rgba(255,255,255,.10);
  --text: #eff2f6; --muted: #a7b1be; --accent: #61d1ff; --live: #5ad992; --warn: #fabd51; --danger: #fc7373;
  --controller: #61d1ff; --pilot: #cdb2ff; --atis: #e5ca80;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f4f6f9; --surface: #fff; --elevated: #eceff3; --outline: rgba(0,0,0,.10); --text: #121820; --muted: #5a6573; --accent: #2a8fc9; --live: #148f55; color-scheme: light; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.4 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif; -webkit-text-size-adjust: 100%; }
body { padding-bottom: calc(64px + env(safe-area-inset-bottom)); }
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 8px; padding: calc(8px + env(safe-area-inset-top)) 16px 8px; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(14px); }
.topbar h1 { flex: 1; margin: 0; font-size: 20px; }
.icon-btn { min-width: 44px; min-height: 44px; border: 0; background: var(--elevated); color: var(--text); border-radius: 12px; font-size: 20px; }
.pill { font-size: 12px; font-weight: 600; padding: 4px 9px; border-radius: 999px; background: var(--elevated); white-space: nowrap; }
.pill-live { color: var(--live); background: color-mix(in srgb, var(--live) 16%, transparent); }
.pill-warn { color: var(--warn); background: color-mix(in srgb, var(--warn) 16%, transparent); }
.pill-off { color: var(--muted); }
.view { padding: 8px 16px 24px; max-width: 720px; margin: 0 auto; }
.card { background: var(--surface); border: 1px solid var(--outline); border-radius: 18px; padding: 14px; margin: 10px 0; }
.card h2 { margin: 0 0 6px; font-size: 17px; }
.muted { color: var(--muted); font-size: 13px; }
.row { display: flex; align-items: center; gap: 12px; }
.row .grow { flex: 1; min-width: 0; }
.code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 700; font-size: 20px; width: 56px; }
.list a.card { display: block; text-decoration: none; color: inherit; }
.chips { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0; -webkit-overflow-scrolling: touch; }
.chip { flex: 0 0 auto; min-height: 44px; padding: 6px 12px; border-radius: 12px; background: var(--surface); border: 1px solid var(--outline); color: var(--text); text-align: left; }
.chip.on { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 20%, transparent); }
.chip small { display: block; font-family: ui-monospace, Menlo, monospace; color: var(--muted); }
.chip .dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-left: 4px; background: var(--danger); }
.chip .dot.on { background: var(--live); }
.btn { min-height: 48px; padding: 0 16px; border: 0; border-radius: 14px; background: var(--accent); color: #000; font-weight: 600; font-size: 16px; }
.btn.secondary { background: var(--elevated); color: var(--text); border: 1px solid var(--outline); }
.btn.danger { background: var(--danger); color: #000; }
.play { width: 56px; height: 56px; border-radius: 50%; padding: 0; font-size: 22px; }
input, select { width: 100%; min-height: 44px; padding: 8px 10px; border-radius: 10px; border: 1px solid var(--outline); background: var(--elevated); color: var(--text); font-size: 16px; }
label { display: block; margin: 8px 0 4px; font-size: 13px; color: var(--muted); }
#map { height: 300px; border-radius: 18px; overflow: hidden; border: 1px solid var(--outline); }
.aircraft-marker { width: 36px; height: 36px; display: grid; place-items: center; cursor: pointer; }
.aircraft-marker svg { width: 22px; height: 22px; fill: var(--controller); filter: drop-shadow(0 0 1px #000); }
.aircraft-marker.ground svg { fill: var(--warn); }
.aircraft-marker.stale svg { opacity: .5; }
.aircraft-marker .label { position: absolute; top: 30px; font: 600 10px ui-monospace, Menlo, monospace; background: color-mix(in srgb, var(--bg) 75%, transparent); padding: 1px 4px; border-radius: 4px; white-space: nowrap; }
.transcript { max-height: 320px; overflow-y: auto; }
.seg { padding: 8px; border-radius: 10px; }
.seg time { font-family: ui-monospace, Menlo, monospace; font-size: 12px; color: var(--muted); margin-right: 6px; }
.tag { font-size: 11px; font-weight: 700; padding: 1px 6px; border-radius: 5px; }
.tag.atis { color: var(--atis); background: color-mix(in srgb, var(--atis) 18%, transparent); }
.tag.controller { color: var(--controller); background: color-mix(in srgb, var(--controller) 18%, transparent); }
.tag.pilot { color: var(--pilot); background: color-mix(in srgb, var(--pilot) 18%, transparent); }
.sev { font-size: 11px; font-weight: 800; padding: 2px 7px; border-radius: 6px; }
.sev.medium { color: var(--warn); background: color-mix(in srgb, var(--warn) 18%, transparent); }
.sev.high { color: var(--danger); background: color-mix(in srgb, var(--danger) 18%, transparent); }
.sev.low, .sev.info { color: var(--muted); background: var(--elevated); }
.player[hidden] { display: none; }
.player { position: fixed; left: 8px; right: 8px; bottom: calc(60px + env(safe-area-inset-bottom)); z-index: 30; display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 16px; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(14px); border: 1px solid var(--outline); }
.player-text { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.player-text strong { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player-text span { font-size: 12px; color: var(--muted); }
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; display: flex; justify-content: space-around; padding: 6px 0 calc(6px + env(safe-area-inset-bottom)); background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(14px); border-top: 1px solid var(--outline); }
.tabbar a { flex: 1; text-align: center; padding: 8px 0; min-height: 44px; text-decoration: none; color: var(--muted); font-size: 13px; font-weight: 600; }
.tabbar a.on { color: var(--accent); }
.banner { padding: 10px 12px; border-radius: 12px; font-size: 13px; }
.banner.warn { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }
.banner.info { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--text); }
.disclaimer { font-size: 11px; color: var(--muted); margin: 16px 0; }
.stat { display: inline-block; margin-right: 14px; font-size: 13px; color: var(--muted); }
.stat b { color: var(--text); font-family: ui-monospace, Menlo, monospace; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.grid .card { margin: 0; }
.wave { display: flex; gap: 3px; align-items: end; height: 28px; }
.wave i { flex: 1; background: var(--accent); border-radius: 2px; height: 20%; transition: height .15s; opacity: .8; }