/* Back to Top Button Styling */
.back-to-top {
    position: fixed;
    right: 25px;
    bottom: 25px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 15px rgba(109, 40, 217, 0.3);
  }
  
  .back-to-top.visible {
    opacity: 1;
    visibility: visible;
  }
  
  .back-to-top:hover {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 6px 20px rgba(109, 40, 217, 0.4);
  }
  
  .back-to-top i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
  }
  
  .back-to-top:hover i {
    transform: translateY(-2px);
  }
  
  /* Adjust for mobile devices */
  @media (max-width: 768px) {
    .back-to-top {
      right: 15px;
      bottom: 15px;
      width: 45px;
      height: 45px;
    }
  }