* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

footer {
    background: linear-gradient(to right, #A9CED9, #9dbfc8); /* nền giống ảnh */
    color: #263238; /* text màu tối nhẹ */
    padding: 40px 0 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    max-width: 1200px;
    margin: 0px 150px;
    gap: 80px;
}

footer h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: #263238; /* text đậm vừa phải */
    border-bottom: 2px solid #5c7782; /* nhấn nhá */
    padding-bottom: 8px;
    width: fit-content;
}

footer p {
    font-size: 0.95rem;
    color: #37474f; /* tone xanh xám tối */
    margin-bottom: 10px;
    line-height: 1.6;
}

.about-description {
    flex: 1 1 300px;
    max-width: 500px;
}

.working-hours p {
    margin: 4px 0;
}

.bottom-footer {
    margin-top: 40px;
    background-color: #425b66; /* xanh navy-xám đậm như tab */
    color: #ecf0f1;
    text-align: center;
    padding: 20px 20px;
    font-size: 1rem;
    border-top: 1px solid #607d8b;
}

.bottom-footer p {
    color: #ffffff;
    margin: 0;
    font-size: 1rem;
}

.bottom-footer a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.bottom-footer a:hover {
    color: #90caf9; /* xanh nhạt hover */
}

/* Responsive */
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
        margin: 0 20px;
        gap: 30px;
    }

    .about-description,
    .contact-info,
    .working-hours {
        width: 100%;
        max-width: 100%;
        margin-bottom: 30px;
    }

    footer h3 {
        font-size: 1.3rem;
    }

    footer p {
        font-size: 1.05rem;
    }
}