#backToTop {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, #6a11cb, #2575fc);
  color: #fff;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  box-shadow: 0 10px 25px rgba(0,0,0,0.35);
  z-index: 9999;
}

#backToTop.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

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

/* MOBILE */
@media (max-width: 600px) {
  #backToTop {
    width: 44px;
    height: 44px;
    font-size: 18px;
    bottom: 18px;
    right: 18px;
  }
}