.yt-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
  align-items: start;
  margin-top: 20px;
}
@media (max-width: 900px) {
  .yt-layout { grid-template-columns: 1fr; }
  .yt-preview-col { order: -1; }
}
.yt-canvas-wrap {
  position: relative;
  width: 100%;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xl);
  aspect-ratio: 16/9;
}
.yt-canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.yt-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.yt-actions .btn { flex: 1; min-width: 110px; justify-content: center; }
.yt-controls { display: flex; flex-direction: column; gap: 14px; }
.yt-style-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.yt-style-btn {
  padding: 8px 6px;
  border: 2px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  transition: border-color var(--t), color var(--t);
  line-height: 1.3;
}
.yt-style-btn span { display:block; font-size:1.2rem; margin-bottom:3px; }
.yt-style-btn:hover { border-color: var(--border-strong); color: var(--text-primary); }
.yt-style-btn.active { border-color: var(--accent); background: var(--accent-dim); color: var(--accent); }
.yt-upload-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--r-xl);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--t), background var(--t);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.yt-upload-zone:hover, .yt-upload-zone.drag-over { border-color: var(--accent-border); background: var(--accent-dim); color: var(--accent); }
.yt-upload-zone input { display: none; }
.yt-color-row { display: flex; gap: 8px; flex-wrap: wrap; }
.yt-color-swatch {
  width: 32px; height: 32px;
  border-radius: var(--r-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--t-bounce), border-color var(--t);
  flex-shrink: 0;
}
.yt-color-swatch:hover { transform: scale(1.12); }
.yt-color-swatch.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }