/* Estilos generales */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

header {
    background: #007BFF;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

header h1 {
    margin: 0;
    font-size: 2.5em;
}

header p {
    font-size: 1.2em;
    margin: 10px 0;
}

.actions .btn {
    background: #28a745;
    color: #fff;
    padding: 10px 20px;
    margin: 10px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}

.actions .btn:hover {
    background: #218838;
}

/* Sección del libro */
#libro {
    display: flex;
    flex-direction: row;
    padding: 20px;
    background-color: #fff;
    margin: 20px;
    border-radius: 10px;
}

#libro img {
    max-width: 300px;
    margin-right: 20px;
}

#libro h2 {
    margin-top: 0;
}

#libro ul {
    list-style: none;
    padding: 0;
}

#libro ul li {
    margin: 5px 0;
}

/* Canales de contenido */
#canales {
    text-align: center;
    padding: 20px;
    background-color: #f9f9f9;
}

#canales h2 {
    font-size: 2em;
}

.canales-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 20px;
}

.canal {
    width: 200px;
    padding: 10px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin: 10px;
}

.canal h3 {
    font-size: 1.5em;
}

.canal .btn {
    background: #007BFF;
    color: #fff;
    text-decoration: none;
    padding: 10px 15px;
    display: inline-block;
    margin-top: 10px;
    border-radius: 5px;
}

.canal .btn:hover {
    background: #0056b3;
}

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

.column {
    width: 30%;
    padding: 15px;
    background-color: #fff;
    margin: 10px 0;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

.column ul {
    list-style-type: none;
}

.column ul li {
    margin: 10px 0;
}

.column ul li a {
    text-decoration: none;
    color: #007BFF;
    font-weight: bold;
}

.column ul li a:hover {
    text-decoration: underline;
}

/* Sección QR */
#qr {
    text-align: center;
    padding: 40px;
    background-color: #fff;
    margin: 20px;
    border-radius: 10px;
}

#qr img {
    max-width: 200px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background: #333;
    color: #fff;
}

footer .enlaces a {
    color: #fff;
    margin: 0 10px;
    text-decoration: none;
}

footer .enlaces a:hover {
    text-decoration: underline;
}

/* Responsive Styles */
@media (max-width: 1200px) {
    .column {
        width: 45%;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    header p {
        font-size: 1em;
    }

    #libro {
        flex-direction: column;
        align-items: center;
    }

    #libro img {
        margin-right: 0;
        margin-bottom: 20px;
    }

    .canal {
        width: 90%;
    }

    .references {
        flex-direction: column;
        align-items: center;
    }

    .column {
        width: 80%;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5em;
    }

    header p {
        font-size: 0.9em;
    }

    .canal {
        width: 100%;
    }

    .column {
        width: 100%;
    }
}