@import url("https://fonts.googleapis.com/css2?family=Jersey+25&display=swap");

:root {
    --measure: 980px;
    --border-thin: 1px;
    --ratio: 1.4;
    --s-5: calc(var(--s-4) / var(--ratio));
    --s-4: calc(var(--s-3) / var(--ratio));
    --s-3: calc(var(--s-2) / var(--ratio));
    --s-2: calc(var(--s-1) / var(--ratio));
    --s-1: calc(var(--s0) / var(--ratio));
    --s0: 1rem;
    --s1: calc(var(--s0) * var(--ratio));
    --s2: calc(var(--s1) * var(--ratio));
    --s3: calc(var(--s2) * var(--ratio));
    --s4: calc(var(--s3) * var(--ratio));
    --s5: calc(var(--s4) * var(--ratio));

    --font-small: 90%;
    --font-footer: 75%;

    --font-code:
        ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas,
        "DejaVu Sans Mono", monospace;
    --font-body: "Jersey 25", system-ui, sans-serif;
    --font-title: "Jersey 25", system-ui, sans-serif;

    --clr-bg: #10141f;
    --clr-text: #deceed;
    --clr-action: #b2d88f;
    --clr-secondary: #b0a7b8;
    --clr-inactive: #a6cb96;
    --clr-focus: #5dd2e4;
    --clr-outline: #4e4b5c;
    --clr-code: #17d9c9;
    --clr-em: #40a5ff;
}

* {
    font-family: "Jersey 25", sans-serif;
}

body {
    background-color: var(--clr-bg);
    color: var(--clr-text);
    font-size: clamp(1rem, 0.6875rem + 1vw, 1.25rem);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
}
body::before {
    content: "";
    display: block;
    height: min(70vh, 700px);
    overflow: hidden;
    width: 100%;
    background: url(gram_header_wide.svg) center no-repeat;
    background-size: cover;
}

/* ---------------------------------------- Inline Content */
/* [a, span, sup, sub, strong, em, q, kbd] */
a {
    color: var(--clr-action);
    text-underline-offset: 18%;
    text-decoration-thickness: 1px;
}
a:visited {
    color: var(--clr-inactive);
}
a:hover {
    color: var(--clr-focus);
}

sup a {
    text-decoration: none;
}

/* Inline Emphasis */
strong {
    font-weight: 700;
}

em {
    font-weight: 400;
    color: var(--clr-em);
    font-family: monospace;
}

q {
    font-style: italic;
}

kbd {
    border: 1px solid var(--clr-outline);
    border-radius: 8px;
    background: hsl(from var(--clr-outline) h s calc(l - 10));
    color: white;
    padding: 2px;
}

/* ---------------------------------------- Block Content */
/* [p, ul, ol, li, headings, blockquote, pre, code] */
h1,
h2,
h3,
h4 {
    text-wrap: balance;
    font-family: var(--font-title);
}
h1,
h2 {
    font-weight: 900;
    font-size: var(--s1);
}
h3 {
    font-weight: 700;
    font-size: var(--s2);
}
h4 {
    font-weight: 500;
    font-size: var(--s3);
}
h1 {
    font-size: var(--s4);
}
h2 {
    font-size: var(--s3);
}
h3 {
    font-size: var(--s2);
}
h4 {
    font-size: var(--s1);
}

p {
    margin-bottom: var(--s2);
}

ul ul {
    margin-inline-start: 1em;
}

ol.footnotes a.backlink {
    text-decoration: none;
}

blockquote {
    margin-top: var(--s1);
    padding-inline: var(--s2);
    font-weight: 500;
    font-style: italic;
    border-left: 4px solid var(--clr-outline);
}

pre,
code {
    font-size: var(--font-small);
    font-family: var(--font-code);
    overflow-x: auto;
}

code {
    color: var(--clr-code);
    background: #192830;
    padding: 0.25rem 0.5rem;
}

pre code {
    white-space: pre;
    padding: 1rem;
    margin: 0 0 1rem;
    display: block;
}

/* ---------------------------------------- Basic Structure/Sections */
/* [main, header, footer, article, section, div] */
main {
}

header {
    margin-block: var(--s1);
}

article {
    margin-block: var(--s2);
}
article .preamble {
    width: 100%;
    text-align: left;
    color: var(--clr-secondary);
}
article .preamble time {
    font-style: italic;
}
article p {
    margin-block: var(--s1);
}

section {
    display: block;
    margin-block: var(--s2);
}

footer {
    text-align: center;
    font-size: var(--font-footer);
    padding-block: var(--s1);
    border-top: 1px solid var(--clr-outline);
}
footer img {
    max-width: 32ch;
}
footer ul {
    list-style: none;

    & li {
        width: 100%;
        min-width: 16ch;
    }
}
footer a {
    font-weight: 400;
    text-decoration: none;
}
footer hr {
    margin-top: var(--s2);
    border: 0;
    height: 1px;
    background-image: linear-gradient(
        to right,
        rgba(0, 0, 0, 0),
        var(--clr-outline),
        rgba(0, 0, 0, 0)
    );
}

/* ---------------------------------------- Tables */
/* [table, td, th, tr, tbody, thead, tfooter, col, colgroup, caption] */
table {
    display: block;
    margin-bottom: var(--s1);

    thead {
        border-bottom: 1px solid var(--clr-outline);
        color: var(--clr-inactive);
    }
}

td {
    padding-inline: var(--s-4);
}

/* ---------------------------------------- Section :: Home */
header#frontpage {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 5rem 0 1rem;
    text-align: center;
}

#frontpage h1 {
    font-size: 5rem;
    margin: 0;
}

#frontpage h2 {
    font-size: 1.5rem;
    font-weight: normal;
    margin: 0 0 1rem;
}

#frontpage blockquote {
    border-left: none;
    margin: 0;
    padding: 0;
}

#frontpage figure {
    margin-block-start: 1rem;
}

#frontpage small {
    margin-block-end: 1rem;
}

#frontpage p {
    color: var(--clr-secondary);
    text-align: justify;
    margin: 0 0 1rem;
}

.download-callout {
    background-color: var(--clr-action);
    color: var(--clr-bg);
    font-size: var(--s0);
    padding: 0.75rem 2.5rem;
    border-radius: 12px;
    border: 2px solid var(--clr-inactive);
    text-decoration: none;
    font-weight: 700;
}

figure.wallpaper {
    padding: 0.75rem 2.5rem;
}
figure.wallpaper img {
    background-color: var(--clr-bg);
    color: var(--clr-bg);
    border-radius: 12px;
    border: 2px solid var(--clr-bg);
}
figure.wallpaper img:hover {
    filter: brightness(110%);
}

.download-callout:visited {
    color: var(--clr-bg);
    background-color: var(--clr-inactive);
}

.download-callout:hover {
    color: var(--clr-action);
    background-color: var(--clr-outline);
}

/* ---------------------------------------- Custom */
article h1,
h2,
h3,
h4 {
    margin-top: var(--s3);
    margin-bottom: var(--s2);
}

.news-article h1 {
    margin-bottom: var(--s4);
}

.page {
    margin-inline: auto;
    max-width: var(--measure);
}

.invert {
    -webkit-filter: invert(100%);
    filter: invert(100%);
}

#page-navbar a {
    text-decoration: none;
}

.page {
    padding-inline: 1em;
}

.center {
    display: block;
    box-sizing: content-box;
    margin-inline: auto;
    max-inline-size: var(--measure);
}

#foot-line {
    padding: var(--s1);
}

#happy-toad {
    border-radius: 6px;
}

.rounded {
    border-radius: 6px;
}

.illustration {
    max-width: 24em;
    margin-inline: auto;
}

.inline-img {
    display: inline;
    width: auto;
    height: 2ch;
    vertical-align: text-bottom;
}

.box {
    display: block;
    padding: var(--s1);
    border: var(--border-thin) solid var(--clr-outline);
    border-radius: var(--s-4);
    outline: var(--border-thin) solid transparent;
    outline-offset: calc(var(--border-thin) * -1);
}
.padded {
    display: block;
    padding: var(--s1);
}
.text-left {
    text-align: left;
}
.text-center {
    text-align: center;
}
.text-right {
    text-align: right;
}
.text-justify {
    text-align: justify;
}

.author {
    margin-top: var(--s0);
    font-size: var(--font-small);
}

.theme-toggle {
    position: absolute;
    top: 0;
    right: 0;
    padding: var(--s-1);
}

[data-theme-toggle] {
    padding: var(--s-1);
    line-height: 1;
    text-align: justify;
    border: none;
    background: none;
    user-select: none;

    svg > path {
        fill: var(--clr-inactive);
        stroke: var(--clr-inactive);
    }
}

.theme-toggle:hover [data-theme-toggle] {
    cursor: pointer;
}

.theme-toggle:hover [data-theme-toggle] svg > path {
    cursor: pointer;
    fill: var(--clr-focus);
    stroke: var(--clr-focus);
}

[data-theme-toggle] svg {
    width: var(--s1);
    height: var(--s1);
}

.license {
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 14px;
    margin-block: var(--s2);
}

.bg {
    border: 2px solid var(--color-bg-dim);
    border-radius: 12px;
    background-color: var(--color-bg-dim);
}

@media (prefers-reduced-motion: no-preference) {
    html:focus-within {
        scroll-behavior: smooth;
    }
}

#nav-back {
    text-decoration: none;
    font-weight: 900;
}

.posts {
    margin-inline: var(--s1);
    line-height: 2;
}

.posts-date {
    padding-left: 1ch;
    color: var(--clr-secondary);
}

.breadcrumbs {
    font-weight: 900;
}

.breadcrumbs a {
    text-decoration: none;
}

.breadcrumbs a::after {
    content: " / ";
    color: var(--clr-outline);
}

.table-wrapper {
    overflow-x: auto;
}

.signature-toad {
    width: 175px;
    height: 150px;
}