.bb-3d-wrap {
  max-width: 1100px;
  margin: 0 auto 20px;
}

.bb-3d-box {
  position: relative;
}

/* Сам model-viewer */
.bb-3d-box model-viewer {
  width: 100%;
  height: 500px;
  background: #fff;
  border-radius: 12px;
  display: block;
}

/* Подсказка */
.bb-3d-hint {
  margin-top: 8px;
  font-size: 12px;
  color: #666;
  text-align: center;
}

/* Оверлей загрузки */
.bb-3d-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(255,255,255,0.9);
  border-radius: 12px;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.bb-3d-overlay.is-hidden {
  opacity: 0;
}

/* Спиннер */
.bb-3d-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(0,0,0,0.15);
  border-top-color: rgba(0,0,0,0.5);
  border-radius: 50%;
  animation: bbspin 0.9s linear infinite;
}

.bb-3d-text {
  font-size: 12px;
  color: #666;
}

@keyframes bbspin {
  to { transform: rotate(360deg); }
}

/* Мобилка */
@media (max-width: 768px) {
  .bb-3d-box model-viewer {
    height: 340px;
  }
}