.link-btn.is-active {
    border: 3.5px solid #4A90E2; 
    color: #4A90E2;
    box-shadow: 0 0 8px rgba(74, 144, 226, 0.4); 
    font-weight: 600;
    transform: translateY(-1px); 
    transition: all 0.2s ease-in-out;
}