:root {
  --bg: #0F1318; --panel: #171C22; --panel2: #1D232A; --border: #28303A;
  --text: #E8EAED; --muted: #98A2AD; --amber: #F5A623; --amber-d: #8A5A10;
  --red: #FF5A4E; --teal: #3FC1A5; --violet: #C39BFF;
  --sans: "IBM Plex Sans", Arial, sans-serif; --display: "Oswald", "Arial Narrow", Arial, sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--sans); }
a { color: var(--amber); }
button, select, input { font-family: var(--sans); }

.app { display: grid; grid-template-rows: auto auto auto 1fr; gap: 10px; padding: 12px 16px 14px; min-height: 100vh; max-width: 1920px; margin: 0 auto; }

/* header */
.top { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand h1 { font-family: var(--display); font-weight: 600; font-size: 34px; margin: 0; letter-spacing: 0.5px; }
.brand h1 span { color: var(--amber); }
.brand p { margin: 0; color: var(--muted); font-size: 15px; }
.clock { font-family: var(--mono); font-size: 22px; color: var(--text); background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 4px 12px; }
.clock small { color: var(--muted); font-size: 12px; margin-left: 6px; }
.controls { display: flex; align-items: center; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.controls button, .controls select, .controls input { background: var(--panel2); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; font-size: 14px; }
.controls button.primary { background: var(--amber); color: #14181D; border-color: var(--amber); font-weight: 600; }
.controls label { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.controls input[type=number] { width: 64px; }
.nav a { font-size: 14px; margin-left: 10px; }

.scoreboard { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.score { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 8px 14px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.score .lbl { color: var(--muted); font-size: 13px; line-height: 1.25; }
.score .vals { display: flex; gap: 14px; align-items: baseline; font-family: var(--display); font-size: 28px; white-space: nowrap; }
.score .vals .a { color: #D3D8DE; }
.score .vals .b { color: var(--amber); }
.score .vals small { font-family: var(--sans); font-size: 11px; color: var(--muted); display: block; text-align: center; }

/* corridor panels */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; display: grid; grid-template-columns: 1fr 270px; gap: 0; overflow: hidden; }
.panel .viz { padding: 8px 10px 4px; }
.panel .head { display: flex; align-items: center; gap: 12px; }
.tag { font-size: 12px; font-weight: 600; letter-spacing: 1.5px; padding: 3px 8px; border-radius: 5px; text-transform: uppercase; }
.tag.static { background: #3A424C; color: #E8EAED; }
.tag.qg { background: var(--amber); color: #14181D; }
.panel h2 { font-family: var(--display); font-weight: 500; font-size: 20px; margin: 0; }
.panel .sub { color: var(--muted); font-size: 13px; }
canvas.corridor { width: 100%; height: 160px; display: block; }
canvas.zoom { width: 100%; height: 64px; display: block; }
.kpis { background: var(--panel2); border-left: 1px solid var(--border); padding: 10px 14px; display: grid; grid-template-rows: repeat(4, auto); gap: 6px; align-content: center; }
.kpi { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.kpi .k { color: var(--muted); font-size: 12.5px; line-height: 1.2; }
.kpi .v { font-family: var(--display); font-size: 24px; }
.kpi .v.bad { color: var(--red); }
.kpi .v.good { color: var(--teal); }

/* bottom row */
.bottom { display: grid; grid-template-columns: 1.05fr 1fr 0.95fr; gap: 10px; min-height: 0; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 10px 14px; display: flex; flex-direction: column; gap: 8px; min-height: 0; }
.card h3 { font-family: var(--display); font-weight: 500; font-size: 18px; margin: 0; letter-spacing: 0.3px; }
.card h3 small { font-family: var(--sans); color: var(--muted); font-size: 12px; font-weight: 400; margin-left: 6px; }

.boards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.led { background: #07090B; border: 2px solid #2E353E; border-radius: 6px; padding: 8px 6px; min-height: 62px; display: flex; flex-direction: column; justify-content: center; align-items: center; font-family: var(--mono); font-weight: 700; font-size: 12.5px; letter-spacing: 1px; color: #3A2E18; text-align: center; line-height: 1.35; }
.led.on { color: #D9B777; }
.led.warn { color: var(--amber); border-color: var(--amber); text-shadow: 0 0 6px rgba(245,166,35,0.6); }
.led.flash-off { color: #5A4315; text-shadow: none; }
.led.fallback { border-color: var(--red); }
.bcap { color: var(--muted); font-size: 11.5px; text-align: center; margin-top: 3px; }
.vsls { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; justify-items: center; }
.vsl { width: 54px; height: 54px; border-radius: 50%; background: #F4F1EA; border: 6px solid #D93A2F; display: flex; align-items: center; justify-content: center; font-family: var(--display); font-weight: 600; font-size: 20px; color: #14181D; }
.vsl.blank { opacity: 0.35; }
.legend { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; color: var(--muted); font-size: 12px; }
.legend .ramp { width: 150px; height: 10px; border-radius: 3px; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 4px; vertical-align: -2px; }

canvas.ts { width: 100%; flex: 1; min-height: 200px; display: block; }

.feed { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; overflow: hidden; flex: 1; }
.feed li { font-size: 13px; line-height: 1.35; padding: 6px 8px; border-radius: 6px; background: var(--panel2); border-left: 4px solid var(--teal); }
.feed li.l2 { border-left-color: var(--amber); }
.feed li.l3 { border-left-color: var(--red); }
.feed li b { font-family: var(--mono); font-weight: 600; color: var(--muted); margin-right: 6px; }
.uhf { background: #221A0C; border: 1px solid var(--amber-d); border-radius: 8px; padding: 8px 10px; font-size: 13px; display: flex; gap: 10px; align-items: center; }
.uhf .st { font-weight: 600; color: var(--amber); white-space: nowrap; }
.uhf button { margin-left: auto; background: var(--amber); color: #14181D; border: 0; border-radius: 5px; padding: 5px 10px; font-weight: 600; cursor: pointer; }
.uhf button[disabled] { opacity: 0.4; cursor: default; }
.note { color: var(--muted); font-size: 12px; }

/* spotlight for recorded video: everything outside the box is dimmed */
.spot { position: fixed; display: none; z-index: 4; border: 3px solid var(--amber); border-radius: 12px; box-shadow: 0 0 0 4000px rgba(8,10,13,0.62); pointer-events: none; }

/* caption overlay for recorded video */
.caption { position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%); background: rgba(10,12,15,0.92); border: 1px solid var(--amber); color: var(--text); font-size: 26px; padding: 12px 22px; border-radius: 10px; max-width: 1400px; text-align: center; display: none; z-index: 5; }
.caption.show { display: block; }
.caption b { color: var(--amber); }

@media (max-width: 1280px) {
  .bottom { grid-template-columns: 1fr; }
  .scoreboard { grid-template-columns: repeat(2, 1fr); }
  .panel { grid-template-columns: 1fr; }
  .kpis { border-left: 0; border-top: 1px solid var(--border); grid-template-columns: repeat(2, 1fr); grid-template-rows: none; }
}