@font-face {
    font-family: "Press Start 2P";
    font-style: normal;
    font-weight: 400;
    src: url("../fonts/press-start-2p-v6-latin-regular.eot");
    src: local("Press Start 2P Regular"), local("PressStart2P-Regular"),
    url("../fonts/press-start-2p-v6-latin-regular.eot?#iefix") format("embedded-opentype"),
    url("../fonts/press-start-2p-v6-latin-regular.woff2") format("woff2"),
    url("../fonts/press-start-2p-v6-latin-regular.woff") format("woff"),
    url("../fonts/press-start-2p-v6-latin-regular.ttf") format("truetype"),
    url("../fonts/press-start-2p-v6-latin-regular.svg#PressStart2P") format("svg");
}

:root {
    --padding: 20px;
    --background-color: black;
    --max-width: 1200px;
    --heading-color: #858585;
    --text-color: #c0c0c0;
    --focus-color: white;
    --font-family: "Press Start 2P";
    --transition-duration: 0.25s;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    height: 100vh;
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-family), sans-serif;
}

main {
    display: flex;
    flex-direction: column;
    margin: 20vh auto 0;
    padding: var(--padding);
    max-width: var(--max-width);
    width: 100%;
    box-sizing: border-box;
}

h1 {
    margin: 0 0 3rem;
    color: var(--heading-color);
    font-size: clamp(1rem, 3vw, 4rem);
}

p {
    margin-top: 0;
    line-height: 1.5;
}

a {
    color: var(--text-color);
    text-decoration: none;
    transition: color var(--transition-duration);
}

a:hover,
a:focus {
    color: var(--focus-color);
}

h1 a {
    color: var(--heading-color);
}

ul {
    margin-top: 0;
}

li:last-child {
    margin-bottom: 0;
}

.introduction {
    text-align: center;

    .namespace {
        margin: 0;
        color: var(--heading-color);
        font-size: clamp(1rem, 5vw, 4rem);
    }

    .slogan {
        margin: 0;
        font-size: clamp(1rem, 3vw, 4rem);
    }

    .asterisk {
        transition: color var(--transition-duration);
    }

    .asterisk.highlighted {
        color: white;
    }
}

.directory-list {
    list-style: none;
    padding-left: 0;
    font-size: clamp(1rem, 4.7vw, 3.5rem);

    li {
        margin-bottom: 0.5rem;
    }
}

.info-link {
    display: inline-block;
    margin-left: 0.5rem;
    height: 1.3vw;
}

.info-icon {
    vertical-align: text-top;
    width: 1.3vw;
    height: 1.3vw;
    fill: var(--text-color);
    transition: fill var(--transition-duration);
}

.info-icon:hover,
.info-icon:focus {
    fill: var(--focus-color);
}

.back-link {
    display: inline-block;
    padding-top: 5rem;
}