html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
    background-color: #f8f9fa;
}

main {
    flex: 1;
}

h1, h2, h3 {
    font-weight: 700;
}

.card img {
    object-fit: cover;
    height: 200px;
}

.navbar .nav-link.active {
    font-weight: 600;
}

.seccion-info {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

footer {
    margin-top: 0;
}