:root {
  --bg: #05080a;
  --panel: #0a1114;
  --line: #1d3a33;
  --green: #39ff9c;
  --green-dim: #1f8f5a;
  --amber: #ffb000;
  --red: #ff3b3b;
  --text: #b8f5d6;
  --muted: #5f8f7a;
  --mono: "Share Tech Mono", ui-monospace, Menlo, monospace;
  --head: "Rajdhani", "Share Tech Mono", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background:
    linear-gradient(rgba(57,255,156,.035) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, rgba(57,255,156,.035) 1px, transparent 1px) 0 0 / 24px 24px,
    radial-gradient(ellipse at 50% 0%, #0c1a17 0%, var(--bg) 70%);
  background-color: var(--bg);
  color: var(--text);
  font: 14px/1.4 var(--mono);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  letter-spacing: .04em;
}

.class-bar {
  background: var(--amber);
  color: #000;
  text-align: center;
  font: 700 12px/1 var(--mono);
  padding: 5px 16px;
  letter-spacing: .2em;
}

.head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  padding: 18px 20px 12px;
  border-bottom: 1px solid var(--line);
}
.unit { color: var(--muted); font-size: 11px; letter-spacing: .25em; }
h1 {
  font: 700 clamp(40px, 8vw, 72px)/0.9 var(--head);
  margin: 6px 0 4px;
  color: var(--green);
  letter-spacing: .12em;
  text-shadow: 0 0 18px rgba(57,255,156,.45);
}
.sub { color: var(--text); font-size: 13px; text-transform: uppercase; }
.readout { display: grid; grid-template-columns: repeat(2, auto); gap: 4px 22px; margin: 0; }
.readout div, .tele div { display: flex; flex-direction: column; }
dt { color: var(--muted); font-size: 10px; letter-spacing: .25em; }
dd { margin: 0; color: var(--green); font-size: 15px; }
dd.ok { color: var(--green); }

.deck {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 16px;
  padding: 16px 20px;
}
.panel {
  position: relative;
  background: linear-gradient(180deg, rgba(13,26,23,.9), rgba(6,11,12,.9));
  border: 1px solid var(--line);
  padding: 26px 14px 14px;
}
.panel::before, .panel::after {
  content: ""; position: absolute; width: 10px; height: 10px; border: 2px solid var(--green-dim);
}
.panel::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.panel::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.panel-tag {
  position: absolute; top: 0; left: 0; right: 0;
  padding: 5px 12px; font-size: 10px; letter-spacing: .3em; color: var(--muted);
  border-bottom: 1px solid var(--line); display: flex; justify-content: space-between;
}

.stage {
  position: relative;
  aspect-ratio: 4 / 3;
  max-height: calc(100vh - 290px);
  min-height: 300px;
  width: 100%;
  background: #000;
  overflow: hidden;
  border: 1px solid var(--line);
}
#view { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
#cam { display: none; }
.reticle {
  position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(var(--green-dim), var(--green-dim)) center / 1px 40px no-repeat,
    linear-gradient(var(--green-dim), var(--green-dim)) center / 40px 1px no-repeat,
    radial-gradient(circle at center, transparent 0 58px, rgba(57,255,156,.35) 59px 60px, transparent 61px);
  opacity: .7;
}
.scan {
  position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,.22) 0 1px, transparent 1px 3px);
}
.scan::after {
  content: ""; position: absolute; left: 0; right: 0; height: 18%;
  background: linear-gradient(180deg, transparent, rgba(57,255,156,.08), transparent);
  animation: sweep 3.5s linear infinite;
}
@keyframes sweep { from { top: -20%; } to { top: 100%; } }
.corner { position: absolute; width: 28px; height: 28px; border: 2px solid var(--green); pointer-events: none; }
.corner.tl { top: 10px; left: 10px; border-right: 0; border-bottom: 0; }
.corner.tr { top: 10px; right: 10px; border-left: 0; border-bottom: 0; }
.corner.bl { bottom: 10px; left: 10px; border-right: 0; border-top: 0; }
.corner.br { bottom: 10px; right: 10px; border-left: 0; border-top: 0; }

.alert {
  position: absolute; left: 50%; top: 22px; transform: translateX(-50%);
  background: var(--red); color: #000; font: 700 13px/1 var(--mono);
  padding: 8px 14px; letter-spacing: .2em; white-space: nowrap; max-width: 92%;
  overflow: hidden; text-overflow: ellipsis;
  opacity: 0; transition: opacity .15s;
}
.alert.on { opacity: 1; animation: blink .5s steps(2) 4; }
@keyframes blink { 50% { opacity: .2; } }

.arm {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; padding: 24px; text-align: center; background: rgba(2,6,6,.82);
}
.arm button {
  font: 700 18px/1 var(--head); letter-spacing: .25em; color: #000; background: var(--green);
  border: 0; padding: 16px 28px; cursor: pointer;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--green), 0 0 30px rgba(57,255,156,.5);
}
.arm button:hover { background: #7dffbf; }
.arm button:disabled { background: var(--green-dim); cursor: wait; }
.arm[hidden] { display: none; }
.arm p { max-width: 420px; margin: 0; color: var(--muted); font-size: 12px; }
.arm .err { color: var(--red); }

.status-row { display: flex; align-items: center; gap: 10px; margin-top: 12px; font: 700 16px/1 var(--head); letter-spacing: .2em; }
.lamp { width: 12px; height: 12px; border-radius: 50%; background: var(--muted); }
.lamp.scan { background: var(--amber); box-shadow: 0 0 10px var(--amber); animation: blink 1.2s steps(2) infinite; }
.lamp.hit { background: var(--red); box-shadow: 0 0 12px var(--red); }
.status-row.hit { color: var(--red); }

.side { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.tele { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 0; }
.tele dd { font-size: 22px; }
.cm { list-style: none; margin: 0; padding: 0; }
.cm li { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.cm b { color: var(--green); font-weight: 400; }
.cm b.warn { color: var(--amber); }
.log-panel { flex: 1; min-height: 160px; }
.log { list-style: none; margin: 0; padding: 0; font-size: 11px; max-height: 260px; overflow: hidden; display: flex; flex-direction: column-reverse; }
.log li { padding: 2px 0; color: var(--muted); overflow-wrap: anywhere; }
.log li:first-child { color: var(--green); }
.log li.hit { color: var(--red); }

.foot { text-align: center; color: var(--muted); font-size: 10px; letter-spacing: .2em; padding: 10px 16px; }

@media (max-width: 860px) {
  .deck { grid-template-columns: 1fr; padding: 12px 16px; }
  .head { padding: 14px 16px 10px; }
  .log { max-height: 140px; }
}