.scroll-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  font-size: 24px;
  color: #666; /* dezentes Grau */
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.2s ease;
  z-index: 1000;
}

.scroll-to-top:hover {
  color: #333; /* dunkleres Grau beim Hover */
  transform: translateY(-3px);
}