:root {
    --primary-gap: 1rem;
    --secondary-gap: 0.6rem;
    --tertiary-gap: 0.3em;
    --content-gap: 1.5rem;
    --regular-font: Inclusive Sans, sans-serif;
    --regular-font-size: 16px;
    --h1-font-size: 25px;
    --content-h1-font-size: 20px;
    --content-h2-font-size: 18px;
    --content-h3-font-size: 16px;
    --subtle-font-size: 0.8rem;
    --header-font-size: 1.1rem;
    --header-height: 2.5rem;
    --monospace-font: JetBrains Mono, monospace;
    --monospace-font-size: 13px;
    --max-width: 65ch;
    --inline-code-block-padding-primary: 4px;
    --inline-code-block-padding-secondary: 2px;
}


:root {
    --primary-fg-colour: #d4d4d4;
    --primary-bg-colour: #1e1e1e;
    --primary-fg-link-colour: #6cb8ff;
    --subtle-fg-colour: #b4b4b4;
    --subtle-bg-colour: #2b2b2b;
    --subtle-border-colour: #5a5a5a;
    --anchor-fg-colour: #ffb36c;
}

:root {
    --code-keyword-colour: #d4a0a8;
    --code-string-colour: #d4a870;
    --code-comment-colour: #7a7a72;
    --code-builtin-colour: #8ac6d4;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--regular-font);
    font-size: var(--regular-font-size);
}

body {
    color: var(--primary-fg-colour);
    background-color: var(--primary-bg-colour);
}

a {
    text-decoration: none;
    color: var(--primary-fg-link-colour);
}

h1 {
    font-size: var(--h1-font-size);
    margin: var(--primary-gap) 0;
}

h1, h2, h3 {
    font-weight: normal;
}

hr {
    border: 1px solid var(--subtle-border-colour);
    width: 100%;
    border-bottom: 0;
    margin: 1rem 0;
}

img {
    max-width: 100%;
}

/* Top Bar */

.top {
    display: flex;
    flex-wrap: wrap;
    column-gap: var(--primary-gap);
    row-gap: 0;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--tertiary-gap);
    background-color: var(--subtle-bg-colour);
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
}

/* Header */

header {
    flex-shrink: 0;
    line-height: var(--header-height);
    white-space: nowrap;
    user-select: none;
}

header a {
    font-family: var(--monospace-font);
    font-size: var(--header-font-size);
    display: block;
    height: var(--header-height);
    padding: 0 var(--primary-gap);
    border-bottom-right-radius: 10px;
    border-bottom-left-radius: 10px;
}

header a {
    background-color: var(--subtle-bg-colour);
    color: var(--subtle-fg-colour);
}

/* Navigation */

nav {
    flex: 1 1 auto;
    min-width: 0;
    padding-left: 1rem;
    padding-right: 1rem;
    text-align: right;
    user-select: none;
}

nav a {
    line-height: var(--header-height);
    color: var(--primary-fg-colour);
}

nav a:hover {
    color: var(--primary-fg-link-colour);
}

nav span:not(:last-child):after {
    content: " ⫽ ";
}

/* Content */

main {
    max-width: var(--max-width);
    padding: var(--secondary-gap);
    margin: 0 auto;
}

@media (max-width: 65ch) { /* should match var(--max-width) */
    main {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* Pages */

.page {
    margin-bottom: var(--content-gap);
}

.pages .page:not(:last-child) {
    border-bottom: 1px solid rgba(90, 90, 90, 0.5);
    padding-bottom: var(--primary-gap);
    margin-bottom: 0;
}

.page__meta {
    font-family: var(--monospace-font);
    font-size: var(--subtle-font-size);
    color: var(--subtle-fg-colour);
    white-space: nowrap;
}

.page__date {
    display: inline-block;
}

.page--view .page__meta {
    display: block;
}

.tags {
    display: inline-block;
}

.tags__tag {
    font-size: var(--subtle-font-size);
    font-family: var(--monospace-font);
    display: inline-block;
    background-color: var(--subtle-bg-colour);
    border-radius: 5px;
}

.tags__tag a, .tags__tag div {
    padding: 4px 6px;
    display: inline-block;
    color: var(--primary-fg-colour);
}

.tags__tag a:hover, .tags__tag--selected div {
    border-radius: 5px;
    background-color: var(--primary-fg-colour);
    color: var(--primary-bg-colour);
}



@media only screen and (max-width: 40rem) {
    nav {
        text-align: left;
    }

    .page__meta {
        margin-bottom: var(--primary-gap);
    }
}

/* Content */

.title {
    margin-right: var(--primary-gap);
    margin-bottom: var(--secondary-gap);
}

.title a {
    color: var(--primary-fg-colour);
}

section h1 {
    font-size: var(--content-h1-font-size);
}

section h2 {
    font-size: var(--content-h2-font-size);
}

section h3 {
    font-size: var(--content-h3-font-size);
}

section h1 a.anchor {
    color: var(--anchor-fg-colour);
    user-select: none;
    margin-right: var(--tertiary-gap);
}

section,
section h1,
section h2,
section h3,
section p {
    margin: 1rem 0;
}

section h1,
section h2,
section h3 {
    margin: 1.5rem 0;
}

section li,
section p {
    line-height: 1.7rem;
}

section a:not(.anchor) {
    text-decoration: underline;
    text-decoration-color: var(--subtle-border-colour);
    text-underline-offset: 2px;
}

section a:not(.anchor):hover {
    text-decoration-color: var(--primary-fg-link-colour);
}

section code {
    font-variant-ligatures: none;
    line-height: 1.4rem;
}

section pre,
section pre > code {
    font-variant-ligatures: none;
    white-space: pre;
    padding: 0;
}

section .highlight {
    position: relative;
}

section .highlight::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 3rem;
    background: linear-gradient(to right, transparent, var(--subtle-bg-colour));
    border-radius: 0 5px 5px 0;
    pointer-events: none;
}

section pre {
    font-variant-ligatures: none;
    border-radius: 5px;
    padding: var(--secondary-gap);
    padding-left: var(--primary-gap);
    overflow: auto;
    word-wrap: normal;
}

section pre,
section code {
    background-color: var(--subtle-bg-colour);
    font-family: var(--monospace-font);
    font-size: var(--monospace-font-size);
}

section code {
    color: var(--primary-fg-colour);
    padding: var(--inline-code-block-padding-secondary);
    padding-left: var(--inline-code-block-padding-primary);
    padding-right: var(--inline-code-block-padding-primary);
    white-space: nowrap;
    border-radius: 5px;
}

section blockquote {
    border-radius: 5px;
    overflow-x: auto;
    margin: 0;
    padding: var(--secondary-gap);
    padding-left: var(--primary-gap);
    background-color: var(--subtle-bg-colour);
    border-left: 6px solid var(--subtle-border-colour);
}

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

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

/* Footer */

@media only screen and (max-width: 65ch) { /* should match var(--max-width) */
    .footnotes ol {
        padding-left: 20px;
    }
}

/* Footnotes */

.footnote-tooltip {
    position: absolute;
    background: var(--subtle-bg-colour);
    border: 1px solid var(--subtle-border-colour);
    border-radius: 5px;
    padding: var(--secondary-gap);
    font-size: 0.9rem;
    line-height: 1.5;
    width: 40ch;
    max-width: 90vw;
    z-index: 1000;
}

/* Images */

section figure {
    margin: 1.5rem auto;
    text-align: center;
}

section figure img {
    border: 1px solid var(--subtle-border-colour);
    border-radius: 5px;
    max-width: 100%;
    height: auto;
}

section figcaption {
    margin-top: var(--secondary-gap);
    font-size: var(--subtle-font-size);
    color: var(--subtle-fg-colour);
    font-style: italic;
}

.images {
    display: flex;
    gap: var(--primary-gap);
    margin: 1.5rem 0;
    justify-content: center;
    flex-wrap: wrap;
    align-items: flex-end;
}

.images figure {
    flex: 1;
    min-width: 0;
    margin: 0;
}

.images figure img {
    width: 100%;
    height: auto;
}

@media (max-width: 40rem) {
    .images {
        flex-direction: column;
    }

    .images figure {
        flex: none;
    }
}

/* Util */

.row {
    margin-top: var(--secondary-gap);
    margin-bottom: var(--secondary-gap);
}


/* Media Queries */

@media only screen and (max-width: 65ch) { /* should match var(--max-width) */
    header a {
        border-bottom-left-radius: 0;
    }
}

/*
    https://github.com/rouge-ruby/rouge/wiki/List-of-tokens
*/

/* Highlighting: Keywords */
.highlight .k,
.highlight .kn,
.highlight .kd,
.highlight .kp,
.highlight .kr,
.highlight .kc,
.highlight .kt,
.highlight .kv {
    color: var(--code-keyword-colour);
}

/* Highlighting: Strings */
.highlight .s,
.highlight .sa,
.highlight .se,
.highlight .sb,
.highlight .sc,
.highlight .dl,
.highlight .sd,
.highlight .s2,
.highlight .sh,
.highlight .sx,
.highlight .s1 {
    color: var(--code-string-colour);
}

/* Highlighting: Comments */
.highlight .c,
.highlight .cm,
.highlight .c1,
.highlight .cs {
    color: var(--code-comment-colour);
}

/* Highlighting: Operators */
.highlight .o,
.highlight .ow {
    color: var(--code-builtin-colour);
}

/* Fonts */
@font-face {
    font-family: JetBrains Mono;
    font-display: swap;
    src: url('/assets/fonts/JetBrainsMono-Regular.woff2') format('woff2'),
         url('/assets/fonts/JetBrainsMono-Regular.woff') format('woff');
}

@font-face {
    font-family: JetBrains Mono Bold;
    font-display: swap;
    font-weight: bold;
    src: url('/assets/fonts/JetBrainsMono-Bold.woff2') format('woff2'),
         url('/assets/fonts/JetBrainsMono-Bold.woff') format('woff');
}

@font-face {
    font-family: JetBrains Mono Bold Italic;
    font-display: swap;
    font-weight: bold;
    font-style: italic;
    src: url('/assets/fonts/JetBrainsMono-Bold-Italic.woff2') format('woff2'),
         url('/assets/fonts/JetBrainsMono-Bold-Italic.woff') format('woff');
}

/* Inclusive Sans */
@font-face {
    font-family: Inclusive Sans;
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('/assets/fonts/InclusiveSans[wght].woff2') format('woff2');
}

@font-face {
    font-family: Inclusive Sans;
    font-style: italic;
    font-weight: 300 700;
    font-display: swap;
    src: url('/assets/fonts/InclusiveSans-Italic[wght].woff2') format('woff2');
}