:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #17212b;
  --muted: #5b6875;
  --border: #d5dbe1;
  --primary: #0b6bcb;
  --danger: #c62828;
  --ok: #1b7f3b;
  --ring: #e65100;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171c;
    --card: #1c232b;
    --text: #e8edf2;
    --muted: #9aa7b4;
    --border: #2f3a46;
    --primary: #4a9eed;
    --danger: #ef5350;
    --ok: #4caf6a;
    --ring: #ff9800;
  }
}

* { box-sizing: border-box; }

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

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}

h1 { font-size: 1.2rem; margin: 0; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }

main { max-width: 1100px; margin: 0 auto; padding: 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 12px;
}

.status { font-size: 0.85rem; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); }
.status.online { color: var(--ok); border-color: var(--ok); }
.status.offline { color: var(--muted); }

label { display: block; margin-bottom: 6px; color: var(--muted); }

input {
  width: 100%;
  max-width: 320px;
  padding: 10px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  display: block;
  margin-bottom: 12px;
}

button {
  font: inherit;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}

button:hover { border-color: var(--primary); }
button:disabled { opacity: 0.5; cursor: default; }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.active { border-color: var(--primary); color: var(--primary); }
button.link { border: 0; background: none; color: var(--primary); padding: 0; text-decoration: underline; }

.error { color: var(--danger); }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

#people { list-style: none; margin: 0; padding: 0; }

#people li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
}

#people li.requesting { border-color: var(--ring); border-width: 2px; }
#people .who { font-weight: 600; }
#people .what { color: var(--muted); font-size: 0.9rem; }
#people li.requesting .what { color: var(--ring); font-weight: 600; }

.callHeader { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }

.stage {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  height: min(70vh, 720px);
  min-height: 280px;
}

#remoteVideo { width: 100%; height: 100%; object-fit: contain; display: block; }

#selfVideo {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 160px;
  border-radius: 8px;
  border: 2px solid #fff;
  background: #000;
}

.stageHint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  color: #fff;
  pointer-events: none;
}

.controls { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }

[hidden] { display: none !important; }