/* ESTILO GENERAL */
body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background-color: #111;
    color: #eee;
    line-height: 1.6;
}

header {
    background: linear-gradient(135deg, #a61c1c, #d62828);
    padding: 25px 0;
    text-align: center;
    color: white;
    margin-bottom: 30px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.4);
}

header h1 {
    margin: 0 0 10px 0;
    font-size: 2.2em;
    letter-spacing: 1px;
}

header ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

header ul li {
    display: inline-block;
    margin: 0 15px;
}

header ul li a {
    text-decoration: none;
    color: white;
    font-weight: bold;
    font-size: 1.1em;
    padding: 6px 12px;
    border-radius: 6px;
}

header ul li a:hover {
    background-color: rgba(255, 255, 255, 0.25);
}

/* TÍTULOS */
h2 {
    color: #d62828;
    margin-left: 20px;
}

h3 {
    color: #a61c1c;
    margin-left: 20px;
}

/* CONTENIDO GENERAL */
p,
li {
    font-size: 1.05em;
    margin: 10px 20px;
}

ul ul {
    margin-top: 10px;
    margin-left: 40px;
}

/* IMÁGENES */
img {
    border-radius: 10px;
    margin: 15px;
    height: 200px;
}

/* FIGURA */
figure {
    text-align: center;
}

figcaption {
    margin-top: 5px;
    font-style: italic;
    color: #ccc;
}

/* TABLAS */
table {
    width: 80%;
    margin: 20px auto;
    border-collapse: collapse;
    background: #1b1b1b;
}

th,
td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #333;
}

th {
    background-color: #d62828;
    color: white;
    font-size: 1.1em;
}

tr:hover {
    background-color: #2a2a2a;
}

/* ASIDE */
aside {
    background: #1b1b1b;
    padding: 15px;
    margin: 25px 20px;
    border-left: 5px solid #d62828;
    border-radius: 6px;
}

aside a {
    display: inline-block;
    padding: 8px 14px;
    background: #d62828;
    color: white;
    border-radius: 6px;
    text-decoration: none;
}

aside a:hover {
    background: #a61c1c;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 15px;
    background: #d62828;
    color: white;
    margin-top: 30px;
    font-weight: bold;
    letter-spacing: 1px;
}

/* IFRAME */
iframe {
    display: block;
    margin: 20px auto;
    border-radius: 10px;
    border: 0;
    width: 600px;
    height: 450px;
}


@media (max-width: 768px) {
    header ul li {
        display: block;
        margin: 10px 0;
    }

    table {
        width: 100%;
    }

    iframe {
        width: 95%;
    }
}