/* Back to Top Button Styling */
.back-to-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  line-height: 50px;
  background-color: var(--secondary) !important;
  color: #fff !important;
  text-align: center;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
}
.back-to-top-btn:hover {
  background-color: var(--primary) !important;
  transform: translateY(-5px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.25);
}
.back-to-top-btn.show {
  opacity: 1;
  visibility: visible;
}