:root {
  color-scheme: dark;
  --bg: #070a08;
  --panel: #101711;
  --panel-strong: #141e16;
  --line: #2b3a2f;
  --muted: #91a092;
  --text: #edf4e9;
  --green: #7ed957;
  --amber: #f0b84a;
  --red: #ff4b4b;
  --shadow: rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Arial, sans-serif;
  background:
    linear-gradient(rgba(126, 217, 87, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 217, 87, 0.03) 1px, transparent 1px),
    radial-gradient(circle at 20% 0%, rgba(126, 217, 87, 0.12), transparent 30%),
    var(--bg);
  background-size: 28px 28px, 28px 28px, auto;
  color: var(--text);
}

.shell {
  width: min(1520px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 32px;
}

.topbar, .panel-head, .meta-grid, .grid {
  display: grid;
  gap: 16px;
}

.topbar {
  grid-template-columns: 1fr auto;
  align-items: end;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1, h2 { margin: 0; line-height: 1.05; }
h1 { font-size: clamp(1.7rem, 4vw, 3.5rem); }
h2 { font-size: 1.05rem; }

.system-state, .pill, .audio-button {
  border: 1px solid var(--line);
  background: #0b110d;
  color: var(--green);
  padding: 8px 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.top-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
}

.audio-button {
  cursor: pointer;
  font: inherit;
  transition: background 0.15s, border-color 0.15s;
}

.audio-button:hover { background: #142216; border-color: rgba(126,217,87,0.5); }
.audio-button.armed { border-color: rgba(126,217,87,0.75); background: #142216; }

.alert-banner {
  border: 1px solid var(--line);
  background: linear-gradient(90deg, #0d1710, #11170f);
  box-shadow: 0 20px 60px var(--shadow);
  padding: 18px 22px;
  margin-bottom: 18px;
  font-size: clamp(1.1rem, 3vw, 2.1rem);
  font-weight: 900;
  text-align: center;
}

.alert-banner.intrusion, .alarm-panel.flash {
  animation: alertPulse 0.9s ease-in-out infinite alternate;
}

.grid {
  grid-template-columns: minmax(0, 1.6fr) minmax(300px, 0.6fr);
  align-items: start;
}

.panel {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20,30,22,0.95), rgba(10,15,11,0.97));
  box-shadow: 0 18px 50px var(--shadow);
  padding: 16px;
}

.panel-head {
  grid-template-columns: 1fr auto;
  align-items: center;
  margin-bottom: 14px;
}

.feed-panel { min-width: 0; }

/* ── VIDEO WRAP: fixed height box, canvas absolutely fills it ── */
.video-wrap {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 500px;

  background: #030503;

  border: 1px solid #203026;

  overflow: hidden;
}

#outputCanvas {
  position: absolute;

  inset: 0;

  width: 100%;

  height: 100%;

  display: block;
}

.scanline {
  position: absolute;

  inset: 0;

  pointer-events: none;

  z-index: 1;

  background: repeating-linear-gradient(
    0deg,
    rgba(255,255,255,.03),
    rgba(255,255,255,.03) 1px,
    transparent 1px,
    transparent 5px
  );
}

.side-stack { display: grid; gap: 16px; }
.meta-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.meta-grid div, .alarm-item, .history-item, .tag {
  border: 1px solid #26372c;
  background: rgba(7,10,8,0.72);
}

dt { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; margin-bottom: 6px; }
dd { margin: 0; font-weight: 800; overflow-wrap: anywhere; }

.detections-panel, .log-panel { grid-column: span 1; }
.tag-list, .alarm-list, .history { display: grid; gap: 10px; }

.tag { padding: 12px; color: var(--green); font-weight: 900; text-transform: uppercase; }
.alarm-item, .history-item { padding: 12px; }
.alarm-item strong, .history-item strong { display: block; margin-bottom: 4px; }

.danger { color: var(--red); border-color: rgba(255,75,75,0.55); }
.empty { color: var(--muted); }

@keyframes alertPulse {
  from { border-color: rgba(255,75,75,0.4); box-shadow: 0 0 0 rgba(255,75,75,0); }
  to   { border-color: var(--red); box-shadow: 0 0 34px rgba(255,75,75,0.32); }
}

@media (max-width: 980px) {
  .topbar, .grid { grid-template-columns: 1fr; }
  .system-state { width: fit-content; }
  .top-actions { justify-content: flex-start; flex-wrap: wrap; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 18px, 1520px); padding-top: 12px; }
  .meta-grid { grid-template-columns: 1fr; }
  .panel { padding: 12px; }
}