.wc-ajax-loading {
  position: relative;
  opacity: .6;
  pointer-events: none;
}

.wc-ajax-loading::after {
  content: 'Ładowanie produktów…';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  padding: 12px 18px;
  border-radius: 6px;
  font-size: 14px;
  box-shadow: 0 10px 25px rgba(0,0,0,.2);
}