:root {
  --ink: #1c2024;
  --cream: #faf7f0;
  --line: #e2ddd2;
  --accent: #3a6b5c;
  --muted: #6b7280;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif;
  color: var(--ink);
  background: var(--cream);
}
header { padding: 24px 24px 8px; }
h1 { margin: 0; font-weight: 600; }
h1 small { color: var(--muted); font-weight: 400; }
.sub { color: var(--muted); margin: 4px 0 0; }
main { padding: 16px 24px 48px; max-width: 860px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  margin-top: 16px;
}
fieldset { border: 1px solid var(--line); border-radius: 8px; margin: 14px 0 0; padding: 12px 14px; }
legend { color: var(--muted); padding: 0 6px; }
.field { display: flex; flex-direction: column; gap: 4px; margin: 8px 0; }
.field label { font-size: 12px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
input {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
}
button {
  font: inherit;
  margin-top: 10px;
  padding: 8px 16px;
  border: 0;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button.link {
  background: none;
  color: var(--accent);
  padding: 0 4px;
  margin: 0;
  font-size: 13px;
}
.roombar {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.cols { display: grid; grid-template-columns: 220px 1fr; gap: 18px; margin-top: 14px; }
aside h3, .chat h3 { margin: 0 0 8px; font-size: 14px; }
.chat h3 small { color: var(--muted); font-weight: 400; }
#roster { list-style: none; margin: 0; padding: 0; }
#roster li { padding: 5px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.log {
  height: 320px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fcfbf7;
  font-size: 14px;
}
.log div { padding: 1px 0; }
.composer { display: flex; gap: 8px; margin-top: 8px; }
.composer input { flex: 1; }
.composer button { margin-top: 0; }
code { background: #f0ede4; padding: 1px 6px; border-radius: 5px; }
/* video grid + camera tray (P2) */
.grid-video {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
  margin: 14px 0;
}
.tile {
  margin: 0;
  position: relative;
  background: #111;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.tile video { width: 100%; height: 100%; object-fit: cover; display: block; }
.tile figcaption {
  position: absolute;
  left: 6px;
  bottom: 6px;
  font-size: 12px;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  padding: 2px 7px;
  border-radius: 5px;
}
.tray { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 8px; }
.tray .tray-label { color: var(--muted); font-size: 13px; }
.tray button { margin-top: 0; }
.tray button[disabled] { color: var(--muted); cursor: default; }

@media (max-width: 640px) {
  .grid, .cols { grid-template-columns: 1fr; }
}