/* Photobooth Cặp Đôi (Bố cục 2/4 ô, Khung dán & Shutter) */
#panel-booth .booth-stage {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin: 0 auto 16px;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 16px 42px rgba(142, 43, 86, 0.18);
  border: 1px solid var(--line);
}

#boothCanvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 26px;
  background: #fff;
}

.booth-controls {
  width: min(100%, 480px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.booth-layouts,
.booth-frames {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.booth-layouts::-webkit-scrollbar,
.booth-frames::-webkit-scrollbar {
  display: none;
}

.booth-btn {
  height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--solid);
  color: var(--text);
  font-size: 11px;
  font-weight: 850;
  white-space: nowrap;
  flex: 0 0 auto;
}

.booth-btn.selected {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--pink), var(--pink2));
  box-shadow: 0 4px 14px rgba(255, 61, 137, 0.28);
}

#boothShutter {
  width: 100%;
  min-height: 48px;
}

#boothShutter:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
}