.site-footer {
    background-color: #172446;
    color: #a9a9a9;
    padding: 60px 0;
    transition: background-color var(--transition-speed) ease;
}
body.dark-mode .site-footer {
    background-color: #000000;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.footer-col h4 {
    color: var(--color-white);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
}
.footer-col ul {
    list-style: none;
    padding: 0;
}
.footer-col li {
    margin-bottom: 12px;
}
.footer-col a {
    color: #a9a9a9;
    transition: color 0.3s ease;
}
.footer-col a:hover {
    color: var(--color-white);
}
.footer-socials {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}
.footer-socials a {
    font-size: 1.5rem;
    color: #a9a9a9;
}
.footer-bottom {
    border-top: 1px solid #33446a;
    margin-top: 40px;
    padding-top: 30px;
    text-align: center;
    font-size: 0.9rem;
}
body.dark-mode .footer-bottom {
    border-top-color: #2c2c2c;
}

@media (min-width: 769px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
        text-align: left;
    }
    .footer-socials {
        justify-content: flex-start;
    }
}