/* Vanilla CSS from https://vanillacss.com/vanilla.css */
/* Reset */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

* {
    box-sizing: border-box;
}

/* Variables */
:root {
    --desktop-font-size: 1.2rem/1.5;
    --mobile-font-size: 1rem/1.4;
    --text-color: #2d2d2d;
    --link-color: blue;
    --link-color-alt: darkblue;
    --primary-color: lightsteelblue;
    --secondary-color: aliceblue;
    --tertiary-color: whitesmoke;
}

/* Typography */
body {
    color: var(--text-color);
    margin: 0 auto;
    max-width: 75ch;
    padding: 0 0.5rem;
}

body, input {
    font: var(--desktop-font-size) -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto, Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji", "Segoe UI Symbol";
}

h1, h2, h3, h4, h5, h6, p, blockquote, dl, img, figure {
    margin: 2rem 0;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: bold;
    line-height: 1.2;
}

h1 {
    font-size: 200%;
}

h2 {
    font-size: 150%;
}

h3 {
    font-size: 120%;
}

h4, h5, h6 {
    font-size: 100%;
}

h5, h6 {
    text-transform: uppercase;
}

header h1 {
    border-bottom: 1px solid;
}

a, a:visited {
    color: var(--link-color);
}

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

strong, time, b {
    font-weight: bold;
}

em, dfn, i {
    font-style: italic;
}

sub {
    font-size: 60%;
    vertical-align: bottom;
}

small {
    font-size: 80%;
}

blockquote, q {
    background: var(--secondary-color);
    border-left: 10px solid var(--primary-color);
    display: block;
    font-family: "Georgia", serif;
    padding: 1rem;
}

    blockquote p:first-child {
        margin-top: 0;
    }

    blockquote p:last-child {
        margin-bottom: 0;
    }

cite {
    font-family: "Georgia", serif;
    font-style: italic;
    font-weight: bold;
    margin-top: 1rem;
}

kbd, code, samp, pre, var {
    font-family: monospace;
}

code, pre {
    background: var(--tertiary-color);
    overflow: auto;
    padding: 0.5rem 1rem;
}

    code pre, pre code {
        padding: 0;
    }

/* Elements */
hr {
    background: var(--text-color);
    border: 0;
    height: 1px;
    margin: 4rem 0;
}

img {
    display: block;
    height: auto;
    max-width: 100%;
}

figure {
    border: 1px solid var(--primary-color);
    display: inline-block;
    padding: 1rem;
    width: 100%;
}

    figure img {
        margin: 0 auto;
    }

    figure figcaption {
        font-size: 80%;
        margin-top: 0.5rem;
        text-align: center;
    }

ul, ol {
    margin: 2rem 0;
    padding: 0 0 0 4rem;
}

dl dd {
    padding-left: 2rem;
}

table {
    border: 1px solid var(--primary-color);
    border-collapse: collapse;
    table-layout: fixed;
    text-align: left;
    width: 100%;
}

    table caption {
        margin: 2rem 0;
    }

    table tr {
        border-bottom: 1px solid var(--primary-color);
    }

    table tbody tr:nth-child(even) {
        background: var(--tertiary-color);
    }

    table th {
        background: var(--secondary-color);
        font-weight: bold;
    }

    table th, table td {
        padding: 1rem;
    }

        table th:not(last-of-type), table td:not(last-of-type) {
            border-right: 1px solid var(--primary-color);
        }

input {
    appearance: none;
    border: 1px solid var(--text-color);
    display: block;
    margin: 0.5rem 0;
    padding: 0.8rem;
}

    input:focus, input:active {
        background-color: var(--secondary-color);
        border-color: var(--link-color);
    }

/* Mobile Styling */
@media screen and (max-width: 75ch) {
    body, input {
        font: var(--mobile-font-size) -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto, Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji", "Segoe UI Symbol";
    }

    table {
        table-layout: auto;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    body {
        background: #191919;
    }

    input:focus, input:active {
        background-color: var(--text-color);
        color: var(--secondary-color);
    }

    :root {
        --text-color: #fff;
        --link-color: orange;
        --link-color-alt: yellow;
        --primary-color: orange;
        --secondary-color: black;
        --tertiary-color: #2d2d2d;
    }
}