.footer {
    padding: 30px 80px;
    background-color: #fff; /* nền trắng */
    color: #000; /* chữ đen */
    border-top: 3px solid #ddd; /* viền trên */
font-family: Arial, Helvetica, sans-serif; 
}

.footer-menu {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
}

.footer .col {
    flex: 1;
    min-width: 200px;
}

.footer-logo {
    width: 150px;
}

.footer h4 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #000;
}

.footer a {
    color: #000;
    font-size: 14px;
    margin-bottom: 6px;
    display: block;
    transition: 0.3s;
}

    .footer a:hover {
        color: #4287f5;
    }

.footer p {
    font-size: 14px;
    margin-bottom: 6px;
    color: #000;
}

.footer .contact h1 {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.footer .icon i {
    font-size: 18px;
    margin-right: 10px;
    cursor: pointer;
    color: #000;
    transition: 0.3s;
}

    .footer .icon i:hover {
        color: #4287f5;
    }

.footer-banner {
    width: 250px;
    margin-top: 15px;
}

.footer-contact {
    margin-top: 20px;
    text-align: center;
    border-top: 1px solid #ddd;
    padding-top: 15px;
}

    .footer-contact .copyright {
        font-size: 13px;
        color: #666;
    }