.screen-stage {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(420px, 100%), 1fr));
  gap: 10px;
  max-width: 1100px;
  margin: 0 auto 18px;
}

.screen-stage:empty { display: none; }

.screen-tile {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #000000;
}

.screen-tile video {
  display: block;
  width: 100%;
  max-height: 65vh;
  object-fit: contain;
}

.screen-label {
  display: block;
  padding: 6px 9px;
  border-top: 1px solid var(--soft);
  color: var(--muted);
  font-size: 10px;
}

.call-controls button.screen-active {
  border-color: rgb(0 255 255 / 0.47);
  background: var(--accent2);
  color: var(--accent);
}

@media (max-width: 680px) {
  .screen-stage { margin-bottom: 12px; }
  .screen-tile video { max-height: 48vh; }
}