body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

.site-footer.modern-footer {
    background-color: #2c3e50; /* Màu nền tối */
    color: #ecf0f1; /* Màu chữ sáng */
    padding: 40px 20px;
    text-align: center;
    padding-bottom: 100px;
}

.modern-footer .footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    max-width: 1200px;
    margin: 0 auto 30px auto;
}

.modern-footer .footer-column {
    flex: 1;
    min-width: 200px;
    margin: 15px;
    padding: 15px;
    background-color: #34495e; /* Màu nền nhẹ hơn cho cột */
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.modern-footer .footer-column h4 {
    color: #1abc9c; /* Màu nhấn cho tiêu đề */
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.modern-footer .footer-column p {
    margin-bottom: 10px;
    font-size: 0.95em;
}

.modern-footer .social-links a {
    color: #ecf0f1;
    margin: 0 8px;
    font-size: 1.4em;
    transition: color 0.3s ease;
}

.modern-footer .social-links a:hover {
    color: #1abc9c; /* Màu nhấn khi hover */
}

.modern-footer .footer-bottom {
    border-top: 1px solid #4a627a;
    padding-top: 20px;
    font-size: 0.9em;
    color: #bdc3c7;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .modern-footer .footer-container {
        flex-direction: column;
        align-items: center;
    }
    .modern-footer .footer-column {
        width: 80%;
        max-width: 350px;
    }
}