.navbar .nav-link{
    border-radius: .5rem;
    transition: .2s ease;
}

.navbar .nav-link:hover{
    background: rgba(255,255,255,.12);
}

.navbar .nav-link.active{
    background: rgba(255,255,255,.18);
}


.footer-olimpiada{
    background:#050505;
    color:#fff;
    padding:40px 0;
    margin-top:70px;
    border-top:5px solid #b9972f; /* dorado institucional */
    box-shadow:0 -2px 12px rgba(0,0,0,.2);
}

.footer-title{
    font-weight:700;
    letter-spacing:1.5px;
    color:#ffffff;
    margin:0;
}

.footer-org{
    color:#d3d3d3;
    font-size:.95rem;
}

.footer-copy{
    color:#9e9e9e;
    letter-spacing:.4px;
}

.social-btn{
    display:inline-flex;
    align-items:center;
    gap:12px;
    padding:12px 20px;
    border:1px solid rgba(185,151,47,.6);
    border-radius:50px;
    text-decoration:none;
    color:#fff;
    transition:.3s ease;
    font-weight:500;
}

.social-btn img{
    width:22px;
    height:22px;
    filter:invert(1);
}

.social-btn:hover{
    background:#b9972f;
    color:#000;
    transform:translateY(-2px);
    box-shadow:0 4px 15px rgba(185,151,47,.35);
}

.social-btn:hover img{
    filter:none;
}

@media(max-width:768px){
    .footer-olimpiada{
        text-align:center;
    }

    .social-btn{
        margin-top:10px;
    }
}