.libros-section {
    display: grid;
    width: 100%;
    grid-template-columns: 1fr;
}

.libro {
    background-color: var(--bgColor);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    align-items: center;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.libro img {
    max-width: 180px;
    height: auto;
    display: block;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.libro-info {
    text-align: left;
}

.libro-info h2 {
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
}

.libro-info .autor {
    font-size: 0.95rem;
    font-weight: bold;
    color: var(--color-primario, #555);
    margin-bottom: 0.5rem;
}

.libro-info .descripcion {
    font-size: 0.9rem;
    opacity: 0.85;
}

@media (min-width: 768px) {
    .libro {
        flex-direction: row;
        align-items: flex-start;
    }

    .libro img {
        margin: 0;
    }
}

@media (min-width: 1024px) {
    .libros-section {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}