:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --danger: #ef4444;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem;
}

.header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.sub {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.room-panel {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.field span {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.row {
  display: flex;
  gap: 0.5rem;
}

input[type="text"] {
  flex: 1;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

button {
  padding: 0.6rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
}

button:hover {
  filter: brightness(1.08);
}

button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

button.danger {
  background: var(--danger);
}

.actions {
  margin-top: 1rem;
}

.status {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.videos {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.video-wrap.local {
  max-width: 360px;
}

.remote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.video-wrap {
  position: relative;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--border);
}

.video-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-wrap .label {
  position: absolute;
  bottom: 0.5rem;
  left: 0.5rem;
  padding: 0.2rem 0.5rem;
  background: rgba(0, 0, 0, 0.65);
  border-radius: 6px;
  font-size: 0.75rem;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.controls button:not(.danger) {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

.status.error {
  color: var(--danger);
}