/* Capycal colors and type on top of the mdBook themes, matching capycal.app:
   the steam-white page, plum text, magenta links from the icon's gradient and
   the aqua of the hot spring. Inter is self-hosted in src/fonts. */

@font-face {
    font-family: "Inter";
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url("../fonts/InterVariable.woff2") format("woff2");
}

:root {
    --capycal-steam: #f6fbfc;
    --capycal-onsen: #cfeff5;
    --capycal-plum: #2b2033;
    --capycal-plum-soft: #5d5266;
    --capycal-line: #dce9ec;
    --capycal-violet: #7c3aed;
    --capycal-violet-soft: #efe7fd;
    --capycal-magenta: #b83c8a;
    --capycal-pink: #f07ec0;
    --capycal-yuzu: #f5b82e;
}

/* Light themes */
.light,
.rust,
html:not(.js) {
    --bg: var(--capycal-steam);
    --fg: var(--capycal-plum);
    --sidebar-bg: #ffffff;
    --sidebar-fg: var(--capycal-plum);
    --sidebar-non-existant: #a99fb0;
    --sidebar-active: #a8327c;
    --sidebar-spacer: var(--capycal-line);
    --sidebar-header-border-color: var(--capycal-magenta);
    --scrollbar: #c9bfcf;
    --icons: var(--capycal-plum-soft);
    --icons-hover: #a8327c;
    --links: #a8327c;
    --inline-code-color: #5b21b6;
    --quote-bg: #e9f8fb;
    --quote-border: var(--capycal-onsen);
    --table-border-color: var(--capycal-line);
    --table-header-bg: #e9f8fb;
    --table-alternate-bg: #fbfdfe;
    --searchbar-border-color: var(--capycal-line);
    --searchbar-bg: #ffffff;
    --searchbar-fg: var(--capycal-plum);
    --searchresults-border-color: var(--capycal-line);
    --searchresults-li-bg: #fdeaf5;
    --search-mark-bg: #f9c4e2;
    --theme-popup-bg: #ffffff;
    --theme-popup-border: var(--capycal-line);
    --theme-hover: #fdeaf5;
    --footnote-highlight: var(--capycal-pink);
    --capycal-heading: var(--capycal-plum);
    --capycal-code-bg: var(--capycal-violet-soft);
    --capycal-pre-bg: #ffffff;
}

/* Dark themes: the same accents on mdBook's dark backgrounds */
.coal,
.navy,
.ayu {
    --links: var(--capycal-pink);
    --sidebar-active: var(--capycal-pink);
    --sidebar-header-border-color: var(--capycal-pink);
    --icons-hover: var(--capycal-pink);
    --inline-code-color: #d8c4fe;
    --table-header-bg: rgba(207, 239, 245, 0.1);
    --table-alternate-bg: rgba(207, 239, 245, 0.03);
    --table-border-color: rgba(207, 239, 245, 0.14);
    --quote-bg: rgba(207, 239, 245, 0.06);
    --quote-border: rgba(207, 239, 245, 0.2);
    --search-mark-bg: #8a2566;
    --searchresults-li-bg: rgba(240, 126, 192, 0.12);
    --theme-hover: rgba(240, 126, 192, 0.12);
    --footnote-highlight: var(--capycal-pink);
    --capycal-heading: #ffe3f2;
    --capycal-code-bg: rgba(124, 58, 237, 0.2);
    --capycal-pre-bg: rgba(255, 255, 255, 0.04);
}

html {
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    font-feature-settings: "cv11", "ss03";
}
body {
    font-size: 1.65rem;
    line-height: 1.65;
}

/* A calm menu bar like the site's header: the icon and the name on the page
   color, a hairline underneath */
#mdbook-menu-bar,
#mdbook-menu-bar.bordered {
    background: var(--bg);
    border-block-end: 1px solid var(--sidebar-spacer);
    box-shadow: none;
}
.menu-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--capycal-heading);
    font-weight: 700;
    font-size: 1.9rem;
    letter-spacing: -0.015em;
}
.menu-title::before {
    content: "";
    width: 28px;
    height: 28px;
    background: url("../logo.svg") center / 36px no-repeat;
    flex: none;
}
.menu-bar .icon-button:focus-visible,
.menu-bar a:focus-visible {
    outline: 2px solid var(--sidebar-active);
    outline-offset: -4px;
}

/* Sidebar: white like a page of the site, the current chapter in magenta */
.sidebar {
    border-inline-end: 1px solid var(--sidebar-spacer);
    font-size: 1.5rem;
}
.chapter li.part-title {
    color: var(--capycal-heading);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-block-start: 1.6em;
}
.chapter li a.active {
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--sidebar-active);
    padding-inline-start: 8px;
}

/* Headings: Inter's display cut, tight like the site */
.content :is(h1, h2, h3, h4) {
    font-optical-sizing: auto;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}
.content h1 {
    font-size: 3.4rem;
    letter-spacing: -0.03em;
    margin-block-start: 1.2em;
}
.content h2 {
    font-size: 2.5rem;
    margin-block-start: 1.8em;
}
.content h3 {
    font-size: 1.95rem;
}
.content :is(h1, h2, h3, h4) .header:is(:link, :visited) {
    color: var(--capycal-heading);
}

.content a:link {
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}
.content a:link:hover {
    text-decoration-color: var(--capycal-pink);
    text-decoration-thickness: 2px;
}

/* Code: violet chips inline, white panels with a hairline for blocks */
:not(pre) > .hljs,
:not(pre) > code {
    background: var(--capycal-code-bg);
    border-radius: 5px;
    padding: 0.1em 0.35em;
}
pre {
    border-radius: 10px;
}
.light pre > .hljs,
.rust pre > .hljs,
html:not(.js) pre > .hljs {
    background: var(--capycal-pre-bg);
    box-shadow: inset 0 0 0 1px var(--capycal-line);
    border-radius: 10px;
}

table {
    border-radius: 10px;
}
table thead th {
    color: var(--capycal-heading);
}

blockquote {
    border-radius: 10px;
    border-block: none;
    border-inline-start: 4px solid var(--quote-border);
}

/* Admonitions on white with a hairline, like code blocks */
.light blockquote.blockquote-tag,
.rust blockquote.blockquote-tag,
html:not(.js) blockquote.blockquote-tag {
    background: #ffffff;
    box-shadow: inset 0 0 0 1px var(--capycal-line);
}

::selection {
    background: rgba(240, 126, 192, 0.35);
}

/* The app icon above the title of the introduction */
.intro-logo {
    display: block;
    width: 140px;
    height: 140px;
    margin: 2rem 0 0 -10px;
}