footer {
        background: linear-gradient(135deg, #1a4f8b, #2c3e50);
        color: #ecf0f1;
        padding: 50px 0 20px;
        font-family: 'Arial', sans-serif;

    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 15px; /* Add padding for mobile to avoid content touching edges */
    }

    footer .row {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    footer .col-lg-4 {
        flex: 0 0 30%;
        max-width: 30%;
        margin-bottom: 10px;
    }

    footer h4 {
        color: #ffffff;
        font-size: 1em;
        margin-bottom: 20px;
        text-transform: uppercase;
        letter-spacing: 2px;
        position: relative;
        padding: 10px 15px;
        border-radius: 5px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        overflow: hidden;
    }

    footer h4::before,
    footer h4::after {
        content: '';
        position: absolute;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(to right, transparent, #ffffff, transparent);
    }

    footer h4::before {
        top: 0;
    }

    footer h4::after {
        bottom: 0;
    }

    .footer-links {
        list-style: none;
        padding: 0;
    }

    .footer-links li {
        margin-bottom: 10px;
    }

    .footer-links a {
        color: #ecf0f1;
        text-decoration: none;
        transition: color 0.3s ease, transform 0.3s ease;
        display: inline-block;
    }

    .footer-links a:hover {
        color: #f48840;
        transform: translateX(5px);
    }

    .quote-of-the-day {
        font-style: italic;
        line-height: 1.6;
        position: relative;
        padding: 20px;
        background-color: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        margin-top: 20px;
    }

    .quote-of-the-day::before {
        content: '"';
        font-size: 4em;
        position: absolute;
        left: 10px;
        top: -10px;
        color: rgba(255, 255, 255, 0.2);
    }

    .social-icons {
        display: flex;
        justify-content: center;
        list-style: none;
        padding: 0;
        margin-top: 20px;
    }
    .social-icons i {
    font-size: 2em; /* Adjust the size as needed */
}

    .social-icons li {
        margin: 0 10px;
    }

.social-icons a {
    color: #2c3e50; /* Màu biểu tượng đậm hơn để hợp với nền xám nhạt */
    font-size: 1.5em;
    transition: color 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
    display: inline-block;
    background-color: #bdc3c7; /* Nền xám nhạt */
    padding: 8px;
    border-radius: 8px; /* Bo góc nhẹ */
     width: 40px; /* Độ rộng cố định */
    height: 40px; /* Chiều cao cố định */
}

.social-icons a:hover {
    color: #ffffff; /* Màu sáng hơn khi hover */
    background-color: #7f8c8d; /* Nền xám đậm hơn khi hover */
    transform: scale(1.05); /* Phóng to nhẹ khi hover */
}

    .copyright-text {
        margin-top: 0px;
        text-align: center;
        padding-top: 30px;
        padding-bottom: 30px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 0.9em;
    }

    @media (max-width: 768px) {
        .container {
            width: 100%;
            padding: 0 10px; /* Ensures padding on mobile */
        }

        .col-lg-4 {
            flex: 0 0 100%;
            max-width: 100%;
            margin-bottom: 20px; /* Add spacing between sections */
        }

        h4::after {
            left: 50%;
            transform: translateX(-50%);
        }

        .footer-links,
        .social-icons {
            text-align: center;
        }

        .quote-of-the-day {
            text-align: center;
        }

         .copyright-text {
        margin-top: 10px;
        padding-top: 10px;
        padding-bottom: 30px;

    }
    /* Show Facebook logo on mobile */
     .facebook-logo {
        display: block; /* Hiển thị logo trên di động */
    }
    }