:root {
    --oscuro: #262a2b;
    --blanco: white;
    --negro: black;
    --gris: #adadad;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Arial Narrow', Arial, sans-serif;
    background-color: var(--blanco);
    display: grid;
    grid-template-areas:"header header" "main menu-lateral" "footer footer";
}

header {
    grid-area: header;
    display: grid;
    grid-template-columns: 1fr 4fr;
    align-items: center;
    background-color: var(--oscuro);
    color: var(--blanco);
    padding: 10px;
}

header img {
    width: 200px;
    display: block;
    padding: 8px;
    margin: 8px;
}

header .menu-superior ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
    gap: 8px;
    margin: 0;
    padding: 0;
}

header .menu-superior ul li a {
    color: var(--blanco);
    text-decoration: none;
    padding: 8px;
}

header .menu-superior ul li a:hover {
    color: var(--gris);
}

.menu-lateral {
    grid-area: menu-lateral;
    background-color: var(--oscuro);
    padding: 20px;
    align-items: stretch;
}

.menu-lateral ul {
    padding: 0;
    margin: 0;
    list-style: none;
    gap: 20px;
    text-align: center;
}

.menu-lateral a {
    color: var(--blanco);
    text-decoration: none;
    padding: 10px;
    display: block;
}

.menu-lateral a:hover {
    color: var(--gris);
    background-color: var(--oscuro);
}

main {
    grid-area: main;
    padding: 20px;
}


form {
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

form fieldset {
    background-color: var(--oscuro);
    border-radius: 6px;
    border: 3px solid var(--oscuro);
}

section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

article {
    background-color: var(--blanco);
    border: 3px solid var(--oscuro);
    border-radius: 6px;
    padding: 15px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 10px;
}


article h2 {
    color: var(--negro);
    text-align: left;
    margin: 0;
}

article p {
    color: var(--negro);
    font-size: 14px;
    margin-bottom: 10px;
}

article img {
    width: 100%;
    border-radius: 10px;
    display: block;
}

article a {
    display: inline-block;
    background-color: var(--oscuro);
    color: var(--blanco);
    padding: 6px;
    border-radius: 3px;
    text-decoration: none;
    justify-self: right;
    margin: 10px;
}

article a:hover {
    background-color: var(--gris);
    color: var(--oscuro);
}

footer {
    grid-area: footer;
    background-color: var(--oscuro);
    justify-content: center;
    align-items: center;
    gap: 20px;
    padding: 15px;
}

footer nav {
    align-items: center;
    text-align: center;
}
footer nav a {
    display: inline-block;
    background-color: var(--oscuro);
    color: var(--blanco);
    text-decoration: none;
}

footer nav a:hover {
    color: var(--gris);
}
footer img {
    width: 150px;
    height: 100px;
    border-radius: 8px;
}


@media screen and (max-width: 768px) {
    body {
        display: block;
    }

    header {
        grid-template-columns: 1fr;
        text-align: center;
    }

    header img {
        margin: 0 auto;
        width: 150px;
    }

    header .menu-superior ul {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .menu-lateral {
        display: none;
    }

    main {
        padding: 10px;
    }

    section {
        grid-template-columns: 1fr;
    }

    article {
        grid-template-columns: 1fr;
        text-align: center;
    }

    article img {
        width: 90%;
        margin: 0 auto;
        grid-column: auto;
        grid-row: auto;
    }

    article h2 {
        text-align: center;
        margin-top: 10px;
    }

    article a {
        justify-self: center;
        margin-top: 10px;
    }

    footer {
        text-align: center;
    }

    footer img {
        width: 100px;
        height: auto;
    }
}