.scale-buttons {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: 8px;
    }
    .scale-btn {
      padding: 10px 20px;
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-family: var(--font-body);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--color-text-secondary);
      transition: all var(--transition-fast);
    }
    .scale-btn:hover {
      border-color: var(--color-primary-subtle);
      background: var(--color-primary-light);
      color: var(--color-primary);
    }
    .scale-btn.active {
      border-color: var(--color-primary);
      background: var(--color-primary-light);
      color: var(--color-primary);
    }
    .dimension-inputs {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .dimension-inputs input { width: 100px; text-align: center; }
    .lock-btn {
      width: 36px; height: 36px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-bg);
      cursor: pointer;
      display: flex; align-items: center; justify-content: center;
      transition: all var(--transition-fast);
      font-size: 1rem;
    }
    .lock-btn.locked {
      background: var(--color-primary-light);
      border-color: var(--color-primary-subtle);
    }
    .original-dims {
      font-size: 0.8rem;
      color: var(--color-text-muted);
      font-family: var(--font-mono);
      margin-top: 4px;
    }