* {
    box-sizing: border-box;
}

:root, body {
    margin: 0;
    height: 100%;
}

main {
    display: flex;
    height: 100%;
    width: 100%;
    flex-wrap: wrap;
}

.selector {
    
    background: #000;
    background: radial-gradient(circle, hsla(240, 39%, 21%, 1) 0%, hsla(0, 0%, 0%, 1) 100%);

    flex-grow: 1;
    display: flex;
    max-width: 100vw;
    width: 50vmax;

    border: 0;
    margin: 0;
    padding: 1em;
    color: #fff;
    letter-spacing: 0.125ch;

    font-family: inherit;

    background-size: cover;

    align-items: center;
    justify-content: center;

    overflow: hidden;
    position: relative;

    font-size: 4vmin;
}

.sentence-key {
    display: inline;
}

.sentence-key.TYPE {
    color: #47E5BC;
}

.sentence-key.WHAT {
    color: #e5a647;
}

.sentence-key.NOISE {
    color: #5f47e5;
}

.sentence-key.LIGHT {
    color: #d5ee65;
}

.sentence-key.TEMPERATURE {
    color: #ee6565;
}

.sentence-key.WHERE {
    color: #65ee77;
}

.sentence-key.WHO {
    color: #d365ee;
}

.selector img {
    width: 100%;
    height: 100%;
    object-fit: cover;

    position: absolute;
    top: 0;
    left: 0;
}

#intro {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100%;

    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    padding: 2em;

    background: #000;
    border: 0;
}

body {
    font-family: 'Merriweather', Georgia, 'Times New Roman', Times, serif;
}

#intro div {
    background: #f7f7f7;
    color: #111;
    text-align: center;

    min-width: min-content;
    width: 80ch;
    max-width: 100vw;

    padding: 1em;

    display: flex;
    align-items: center;
    flex-direction: column;
}

kbd {
    padding: 0.5ch;
    background: #eee;
    border: 1px solid #ccc;
    border-radius: 0.5ch;
}

#intro button {
    width: max-content;
    font-size: 1.25em;
    padding: 0.5em;

    margin: 0.5em 0;
}

#intro p {
    line-height: 1.6;
    margin: 0 0.5em;
}

#shadow {
    position: fixed;
    display: flex;
    top: 1000vh;
    width: max-content;
    height: 100%;
}

:root {
    height: 100%;
}