#goTopBtn {
  position: fixed;
  right: 21px;
  /*bottom: 105px;*/
  bottom: 175px;
  z-index: 9999;

  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;

  background: linear-gradient(135deg, #2563eb, #1e40af);
  color: #fff;

  display: flex;
  align-items: center;
  justify-content: center;

  cursor: pointer;

  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);

  transition: all 0.3s ease;
}

#goTopBtn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#goTopBtn:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

#goTopBtn svg {
  stroke: white;
}