/* 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, "Segoe UI Variable Display", 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, "Segoe UI Variable Display", 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: #b31523;
        --link-color-alt: yellow;
        --primary-color: #b31523;
        --secondary-color: black;
        --tertiary-color: #2d2d2d;
    }
}