.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;

  width: 48px;
  height: 48px;

  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);

  color: white;
  font-size: 22px;
  cursor: pointer;

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

  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
}

.scroll-to-top.show {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background: rgba(255, 255, 255, 0.35);
  transform: translateY(-4px);
}