html, body {
    padding: 0;
    margin: 0;
}

body {
    background-color: var(--light-background);
    --text-color: black;
    color: var(--text-color);
    font-family: Verdana, sans-serif;
    --light-background: #efe9f2;
    --mid-background: #d4bce1;
    --dark-background: #bc8fd2;
    --element-bg: rgb(255, 255, 184);
}

.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body.squish {
    .page {
        min-width: 800px;
        width: 0;
        margin: 0 auto;
    }
}
body.squish.max-content {
    .page {
        min-width: max-content;
    }
}

.header {
    overflow-y: auto;
    padding: 0.6em;
    background: var(--dark-background);
    position: relative;
    h1 {
        font-style: italic;
    }
    .nav {
        a {
            display: inline-block;
            padding: 0.2em;
            border: 3px solid;
            border-color: black #55286c #55286c black;
            background-color: var(--mid-background);
        }
    }
    .options {
        position: absolute;
        right: 0;
        top: 0;
        padding: 0.6em;
        text-align: right;
    }
}

.content {
    padding: 0.6em;
    p {
        margin-bottom: 0;
    }
    ul {
        margin: 0.5em 0;
    }
    img {
        display: block;
        margin: 0 auto;
    }
}

.revision-box {
    width: max-content;
    margin: 0 auto;
    .current {
        font-weight: bold;
    }
}
.revision-box > :nth-child(1) {
    text-align: center;
    font-style: italic;
}

.periodic-table {
    font-size: 1.4em;
    tr {
        height: 2em;
    }
    td:not(.spacer) {
        background: var(--element-bg);
        min-width: 2.1em;
        height: 2.1em;
        text-align: center;
        border: 2px solid var(--text-color);
        sub {
            font-size: 0.65em;
            transform: scaleX(0.7);
            display: inline-block;
            margin: 0 -3px;
        }
    }
    td:not(.spacer)[data-proton-digits="1"] {
        sub {
            margin: 0 -1px;
        }
    }
}

.note {
    font-style: italic;
    text-align: center;
}

.image-desc {
    margin-top: 0.5em;
    font-style: italic;
    text-align: center;
}

.footer {
    margin-top: auto;
    padding: 0.6em;
    background: var(--dark-background);
}

body.darkmode {
    --text-color: white;
    --light-background: #1d181f;
    --mid-background: #584a60;
    --dark-background: #5d2d75;
    --element-bg: #5e0000;
    .header .nav a {
        border-color: white #dacce0 #dacce0 white;
    }
    a {
        color: #afb0e0;
    }
    a:visited {
        color: #c59ae5;
    }
    .content img {
        background: var(--text-color);
        margin: 0.5em auto;
    }
}