:root {
  --bg: #0f1115;
  --surface: #181b21;
  --surface-2: #20242c;
  --border: #2c313b;
  --text: #e7e9ee;
  --muted: #8b93a3;
  --accent: #3d8bfd;
  --ok: #2fbf71;
  --bad: #e5484d;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.hidden { display: none !important; }

button, select, input[type="password"] {
  font: inherit;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
}
button { cursor: pointer; background: var(--accent); border-color: var(--accent); color: #fff; }
button:hover { filter: brightness(1.1); }
button.ghost { background: transparent; border-color: var(--border); color: var(--text); }
button.danger { background: transparent; border-color: var(--bad); color: var(--bad); width: 100%; }

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.brand { font-weight: 600; margin-right: auto; }

.badge { padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.online { background: color-mix(in srgb, var(--ok) 20%, transparent); color: var(--ok); }
.badge.offline { background: color-mix(in srgb, var(--bad) 20%, transparent); color: var(--bad); }

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 16px;
  padding: 16px;
  max-width: 1400px;
  margin: 0 auto;
}

.stage {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
}
.stage img { width: 100%; height: 100%; object-fit: contain; display: block; }
.stage:fullscreen { border-radius: 0; aspect-ratio: auto; }
.placeholder { position: absolute; color: var(--muted); }

.overlay {
  position: absolute;
  left: 8px;
  top: 8px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.overlay span:not(:empty) {
  background: rgba(0, 0, 0, 0.6);
  padding: 2px 8px;
  border-radius: 6px;
  font: 12px ui-monospace, monospace;
}

.actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  align-self: start;
}
.panel h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 0 0 12px; }
.panel h2:not(:first-child) { margin-top: 20px; }
.panel label { display: block; margin-bottom: 14px; }
.panel label select, .panel label input[type="range"] { display: block; width: 100%; margin-top: 6px; }
.panel label.check { display: flex; align-items: center; gap: 8px; }
.panel output { float: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.panel small { color: var(--muted); }
input[type="range"] { accent-color: var(--accent); }

.info { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 0 0 16px; font-size: 13px; }
.info dt { color: var(--muted); }
.info dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

.login {
  position: fixed;
  inset: 0;
  z-index: 10;
  background: var(--bg);
  display: grid;
  place-items: center;
  padding: 16px;
}
.card {
  width: min(360px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: grid;
  gap: 10px;
}
.card h1 { font-size: 18px; margin: 0 0 8px; }
.error { color: var(--bad); margin: 0; min-height: 1em; }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; padding: 12px 16px; }
  .topbar { flex-wrap: wrap; }
  .brand { width: 100%; margin: 0; }
  #camera-select { flex: 1; min-width: 0; }
}