.nav-btn {
    position: relative;
    padding-bottom: 4px;
    font-weight: 500;
    color: white;
  }
  
  .nav-btn::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background-color: #a855f7; /* Tailwind's purple-500 */
    transform-origin: center;
    transition: transform 0.3s ease;
  }

  .nav-btn.active::after {
    transform: translateX(-50%) scaleX(1); /* Show the underline */
  }
  
  .nav-btn:hover::after {
    transform: translateX(-50%) scaleX(1);
  }
  
  @keyframes spin-slow {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }
  
  .animate-spin-slow {
    animation: spin-slow 100s linear infinite;
  }

  /* project cards glow effect */
  .glow-hover {
    transition: all 0.3s ease;
    border: 2px solid transparent;
    border-radius: 1rem;
  }
  
  .glow-hover:hover {
    border-color: rgba(168, 85, 247, 0.9);
    box-shadow: 0 0 20px 6px rgba(168, 85, 247, 1);
  }