#backToTop {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background-color: var(--accent, #6552D0);
  color: #ffffff;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: none;
  z-index: 999;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
  transition: background-color 0.3s ease, transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

#backToTop:hover {
  background-color: #4e3cb1;
  transform: translateY(-4px);
}

#backToTop:active {
  transform: scale(0.95);
}