/* Back to Top Button Styles */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient);
  color: white;
  border: none;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  box-shadow: 0 4px 12px rgba(15, 117, 188, 0.4);
  transform: translateY(20px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  z-index: 99;
}

.back-to-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 15px rgba(15, 117, 188, 0.6);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Media query for smaller screens */
@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
}