@media (max-width: 768px) {

  .checkout-top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;

    z-index: 9999;

    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);

    box-shadow: 0 4px 18px rgba(0,0,0,0.10);

    padding: 10px 12px;

    transform: translateY(-120%);
    transition: transform 0.25s ease;
  }

  .checkout-top-bar.visible {
    transform: translateY(0);
  }

  .checkout-top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
  }

  .checkout-top-bar .price {
    font-weight: 700;
    font-size: 14px;
    white-space: nowrap;
  }

  .checkout-top-bar button {
    padding: 10px 12px;
    font-size: 13px;
    border-radius: 8px;
  }

  body {
    padding-top: 0;
  }
}