/* Base and content styles: mono body, Geist headings, square corners. */

:root {
    color-scheme: var(--color-scheme);
}

html {
    font-family: var(--mono-font);
    color: var(--fg);
    background-color: var(--bg);
    text-size-adjust: none;
    -webkit-text-size-adjust: none;
    scroll-padding-top: calc(var(--menu-bar-height) + 16px);
}

body {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    overflow-x: hidden;
    font-feature-settings: "calt" 1, "zero" 0;
}

::selection {
    background-color: var(--bg-sel);
    color: var(--fg-strong);
}

.hidden { display: none !important; }
.left { float: left; }
.right { float: right; }
.boring { opacity: 0.6; }
.hide-boring .boring { display: none; }

/* Page */

.page-wrapper {
    box-sizing: border-box;
    padding-top: var(--menu-bar-height);
    min-height: 100vh;
    background-color: var(--bg);
}

.page {
    outline: 0;
    padding: 0 var(--page-padding);
}

.content {
    padding: 0 0 64px;
}

.content main {
    max-width: var(--content-max-width);
    margin-inline: auto;
    overflow-wrap: break-word;
}

/* Headings */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--sans-font);
    font-weight: 600;
    color: var(--fg-strong);
    line-height: 1.25;
    letter-spacing: -0.01em;
}

.content h1 {
    font-size: 30px;
    margin: 8px 0 20px;
}

.content h2 {
    font-size: 20px;
    margin: 48px 0 14px;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 6px;
    text-decoration-color: var(--rule-strong);
}

.content h3 {
    font-size: 16px;
    margin: 32px 0 10px;
}

.content h3::before {
    content: "▍";
    color: var(--blue);
    margin-inline-end: 4px;
}

.content h4 {
    font-size: 14px;
    margin: 24px 0 8px;
    color: var(--fg-strong);
}

.content h2 + h3 { margin-top: 20px; }

/* mdBook wraps each heading's text in a self-link. */
.content .header:link,
.content .header:visited {
    color: inherit;
    text-decoration: none;
}

.content :is(h1, h2, h3, h4) .header:hover::after {
    content: " #";
    color: var(--faint);
}

h1 code, h2 code, h3 code, h4 code, h5 code, h6 code {
    font-size: 0.9em;
}

/* Text */

.content p,
.content li {
    font-weight: 450;
}

.content p { margin: 0 0 16px; }

.content strong { color: var(--fg-strong); font-weight: 700; }
.content em { color: var(--fg-strong); }

.content a,
.content a:visited {
    color: var(--fg-strong);
    text-decoration: underline;
    text-decoration-color: var(--blue-shade);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    transition: color 120ms, text-decoration-color 120ms;
}

.content a:hover {
    color: var(--blue);
    text-decoration-color: var(--blue);
}

.content ul,
.content ol {
    padding-inline-start: 22px;
    margin: 0 0 16px;
}

.content ul { list-style: square; }

.content li { margin: 4px 0; padding-inline-start: 4px; }
.content li > p { margin-bottom: 8px; }
.content li > ul,
.content li > ol { margin: 4px 0 8px; }

.content ul > li::marker { color: var(--blue); }
.content ol > li::marker { color: var(--muted); font-weight: 600; }

.content hr {
    border: 0;
    border-top: 1px dashed var(--rule-strong);
    margin: 40px 0;
}

.content img,
.content video {
    max-width: 100%;
    border: 1px solid var(--rule);
}

/* Inline code reads as a key or a value: a flat chip. */
code {
    font-family: var(--mono-font) !important;
    font-size: var(--code-font-size);
    direction: ltr !important;
}

:not(pre) > code {
    padding: 1px 5px;
    color: var(--cyan);
    background-color: var(--bg-hl);
    white-space: break-spaces;
}

.content a > code { color: inherit; }

/* Code blocks */

pre {
    position: relative;
    margin: 0 0 20px;
    background-color: var(--bg-dark);
    border: 1px solid var(--rule);
    border-inline-start: 2px solid var(--blue-shade);
}

pre > code {
    display: block;
    padding: 14px 16px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.6;
}

/* A small language tag in the corner, the way a terminal title would sit. */
pre:has(> code[class*="language-"]:not(.language-text))::after {
    position: absolute;
    top: 0;
    right: 0;
    padding: 1px 8px;
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--faint);
    border-left: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    transition: opacity 100ms;
}
pre:has(> code.language-bash)::after   { content: "bash"; }
pre:has(> code.language-sh)::after     { content: "sh"; }
pre:has(> code.language-toml)::after   { content: "toml"; }
pre:has(> code.language-json)::after   { content: "json"; }
pre:has(> code.language-ini)::after    { content: "ini"; }
pre:has(> code.language-lua)::after    { content: "lua"; }
pre:has(> code.language-python)::after { content: "python"; }
pre:hover::after { opacity: 0; }

@media only screen and (max-width: 760px) {
    pre:has(> code[class*="language-"]:not(.language-text)) > code { padding-top: 26px; }
}

/* Tables */

.table-wrapper {
    overflow-x: auto;
    margin: 0 0 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    line-height: 1.55;
}

table th,
table td {
    padding: 7px 12px;
    text-align: start;
    vertical-align: top;
    border-bottom: 1px solid var(--rule);
}

table thead th {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--rule-strong);
    white-space: nowrap;
}

table tbody tr:hover { background-color: color-mix(in srgb, var(--bg-hl) 45%, transparent); }

table td:first-child { color: var(--fg-strong); }

/* Asides */

blockquote {
    margin: 0 0 20px;
    padding: 12px 16px;
    color: var(--fg);
    background-color: var(--bg-dark);
    border-inline-start: 2px solid var(--magenta);
}

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

.warning {
    margin: 0 0 20px;
    padding: 12px 16px;
    border-inline-start: 2px solid var(--yellow);
    background-color: var(--bg-dark);
}

kbd {
    display: inline-block;
    min-width: 1.4em;
    padding: 0 5px;
    font-family: var(--mono-font);
    font-size: 12px;
    line-height: 1.6;
    text-align: center;
    color: var(--fg-strong);
    background-color: var(--bg-hl);
    border: 1px solid var(--rule-strong);
    border-bottom-width: 2px;
}

sup { line-height: 0; }

.footnote-definition { font-size: 0.9em; }
.footnote-definition ul,
.footnote-definition ol { padding-left: 20px; }

mark {
    color: var(--bg);
    background-color: var(--yellow);
    padding: 0 2px;
    margin: 0 -2px;
    transition: background-color 300ms linear;
    cursor: pointer;
}

mark.fade-out {
    color: inherit;
    background-color: transparent !important;
    cursor: auto;
}

:target { scroll-margin-top: calc(var(--menu-bar-height) + 16px); }

.content :is(h2, h3, h4):target {
    color: var(--blue);
}

.tooltiptext {
    position: absolute;
    visibility: hidden;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    padding: 2px 8px;
    font-size: 11px;
    font-style: normal;
    white-space: nowrap;
    color: var(--button-fg);
    background-color: var(--button-bg);
    z-index: 1000;
}

.tooltipped .tooltiptext { visibility: visible; }

.result-no-output { font-style: italic; }