/* Pie de página */
footer {
    background-color: #1a75a7;
    color: white;
    padding: 30px 0;
    margin-top: 40px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-section {
    flex: 1;
    min-width: 250px;
    margin-bottom: 20px;
    padding: 0 15px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul li a {
    color: white;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #ddd;
}

.popular-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}

.number {
    display: inline-block;
    width: 25px;
    height: 25px;
    background-color: white;
    color: #1a75a7;
    border-radius: 50%;
    text-align: center;
    line-height: 25px;
    margin-right: 10px;
    font-weight: bold;
    flex-shrink: 0;
}