:root {
    --primary-color: #5A266A;
    --primary-light: rgba(90, 38, 106, 0.1);
    --text-dark: #333333;
    --text-medium: #555555;
    --text-light: #777777;
    --border-color: #E0E0E0;
    --background-light: #F8F3EF;
  }
  
  /* Variant switcher */
  .rshin-variant-section {
    margin: 30px 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
  }
  .variant-label {
    font-size: 18px;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 10px;
    text-align: center;
  }
  .rshin-variant-switcher {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
  }
  .variant-btn {
    padding: 10px 20px;
    background: #fff;
    color: var(--text-dark);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    min-width: 120px;
    transition: all 0.2s ease;
  }
  .variant-btn:hover { background: var(--primary-light); }
  .variant-btn.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
  }
  
  /* Unit price */
  .rshin-unit-price {
    text-align: center;
    margin: 22px 0;
    font-size: 18px;
    color: var(--text-dark);
  }
  .unit-price-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-color);
    margin: 0 5px;
  }
  .toman {
    font-size: 16px;
    color: var(--text-light);
  }
  
  /* Quantity controls */
  .rshin-quantity-calculator {
    text-align: center;
    margin: 18px 0;
  }
  .quantity-controls {
    display: inline-flex;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
  }
  .quantity-btn {
    width: 50px;
    height: 50px;
    background: #fff;
    color: var(--primary-color);
    border: none;
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .quantity-btn:hover { background: var(--primary-light); }
  .quantity-input {
    width: 120px;
    border: none;
    font-size: 20px;
    text-align: center;
    font-weight: 700;
    color: var(--text-dark);
  }
  
  /* Price boxes */
  .rshin-price-boxes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin: 20px 0;
  }
  .price-box {
    background: var(--background-light);
    border-radius: 12px;
    padding: 18px 14px;
    text-align: center;
    border: 1px solid rgba(90, 38, 106, 0.06);
    transition: all 0.2s ease;
  }
  .price-box .tier-range {
    font-size: 15px;
    color: var(--text-medium);
    margin-bottom: 8px;
    font-weight: 600;
  }
  .price-box .unit-price {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-dark);
  }
  .price-box.active {
    border: 2px solid var(--primary-color);
  }
  .price-box.active .tier-range,
  .price-box.active .unit-price {
    color: var(--primary-color);
  }
  
  /* SKU display */
  .rshin-sku-display {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 20px 0;
    font-size: 16px;
  }
  .sku-value {
    background: var(--primary-light);
    padding: 8px 18px;
    border-radius: 8px;
    color: var(--primary-color);
    font-weight: 700;
  }
  
  /* Responsive */
  @media (max-width: 992px) {
    .rshin-price-boxes { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 768px) {
    .rshin-price-boxes { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
    .variant-btn { width: calc(50% - 10px); font-size: 14px; }
  }
  @media (max-width: 480px) {
    .variant-btn { width: 100%; }
    .quantity-btn { width: 45px; height: 45px; }
    .quantity-input { width: 90px; font-size: 18px; }
  }