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/* ------------------------------------------------------------------------
* copperhead docs theme
*
* A neutral, near-black palette with the copper brand accent, in the style
* of a "clean" GitBook site: filled rounded sidebar panel, pill-highlighted
* navigation, a narrow content column, and quiet borders instead of shadows.
*
* Starlight names its gray scale from the dark palette, so in BOTH modes
* `--sl-color-white` is the strongest text colour and `--sl-color-black` is
* the page background. Everything here is unlayered on purpose: it beats
* Starlight's own layered rules without needing !important.
* ---------------------------------------------------------------------- */
:root {
--sl-font: 'Inter Variable';
--sl-font-mono: 'IBM Plex Mono';
/* Dark palette */
--sl-color-white: #f7f8f8;
--sl-color-gray-1: #e3e5e8;
--sl-color-gray-2: #b3b8be;
--sl-color-gray-3: #8a9098;
--sl-color-gray-4: #4c4f53;
--sl-color-gray-5: #343638;
--sl-color-gray-6: #232425;
--sl-color-black: #1b1b1c;
--sl-color-accent-low: #3b2614;
--sl-color-accent: #c47a3a;
--sl-color-accent-high: #f2b57e;
--sl-color-text: var(--sl-color-gray-1);
--sl-color-text-accent: #e6a366;
--sl-color-text-invert: var(--sl-color-black);
--sl-color-bg: var(--sl-color-black);
--sl-color-bg-nav: var(--sl-color-black);
--sl-color-bg-sidebar: var(--sl-color-gray-6);
--sl-color-bg-inline-code: var(--sl-color-gray-6);
--sl-color-bg-accent: var(--sl-color-accent);
--sl-color-hairline-light: var(--sl-color-gray-5);
--sl-color-hairline: var(--sl-color-gray-5);
--sl-color-hairline-shade: var(--sl-color-gray-5);
--sl-color-backdrop-overlay: rgb(0 0 0 / 0.6);
/* Theme-specific helpers used by the components */
--ch-hover-bg: rgb(255 255 255 / 0.05);
--ch-pill-bg: color-mix(in srgb, var(--sl-color-accent) 16%, transparent);
--ch-panel-ring: rgb(255 255 255 / 0.04);
--ch-on-accent: #1b1b1c;
--ch-accent-hover: #d48a48;
/* Type scale (GitBook-ish: h1 34px, h2 24px, h3 20px) */
--sl-text-h1: 2.125rem;
--sl-text-h2: 1.5rem;
--sl-text-h3: 1.25rem;
--sl-text-h4: 1.0625rem;
--sl-text-h5: 1rem;
--sl-text-code: 0.875rem;
--sl-text-code-sm: 0.8125rem;
--sl-line-height: 1.65;
--sl-line-height-headings: 1.25;
/* Layout */
--sl-sidebar-width: 18rem;
--sl-content-width: 48rem;
--sl-main-pad: 0 0 4rem 0;
}
:root[data-theme='light'] {
--sl-color-white: #1a1b1e;
--sl-color-gray-1: #2b2d32;
--sl-color-gray-2: #545962;
--sl-color-gray-3: #6d747f;
--sl-color-gray-4: #c2c8d2;
--sl-color-gray-5: #e3e7ed;
--sl-color-gray-6: #eff2f6;
--sl-color-gray-7: #f7f8fa;
--sl-color-black: #ffffff;
--sl-color-accent-low: #f8e9db;
--sl-color-accent: #a35d1f;
--sl-color-accent-high: #5d3411;
--sl-color-text-accent: #9a5619;
--sl-color-text-invert: #ffffff;
--sl-color-bg-nav: #ffffff;
--sl-color-bg-sidebar: var(--sl-color-gray-7);
--sl-color-bg-inline-code: var(--sl-color-gray-6);
--sl-color-hairline-light: var(--sl-color-gray-5);
--sl-color-hairline: var(--sl-color-gray-5);
--sl-color-hairline-shade: var(--sl-color-gray-5);
--sl-color-backdrop-overlay: rgb(20 22 26 / 0.5);
--ch-hover-bg: rgb(0 0 0 / 0.045);
--ch-pill-bg: color-mix(in srgb, var(--sl-color-accent) 11%, transparent);
--ch-panel-ring: rgb(0 0 0 / 0.05);
--ch-on-accent: #ffffff;
--ch-accent-hover: #8f4f18;
}
@media (min-width: 72rem) {
:root {
--sl-content-pad-x: 2rem;
}
}
/* ---- Base ------------------------------------------------------------- */
body {
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
::selection {
background-color: color-mix(in srgb, var(--sl-color-accent) 35%, transparent);
}
.sidebar-pane,
.right-sidebar {
scrollbar-width: thin;
scrollbar-color: var(--sl-color-gray-5) transparent;
}
/* ---- Header ------------------------------------------------------------ */
header.header {
border-bottom: 1px solid color-mix(in srgb, var(--sl-color-gray-5) 75%, transparent);
}
.site-title {
gap: 0.5rem;
font-size: 1.125rem;
font-weight: 600;
letter-spacing: -0.01em;
color: var(--sl-color-white);
}
.site-title img {
height: 1.375rem;
width: auto;
}
/* Search trigger */
@media (min-width: 50rem) {
button[data-open-modal] {
height: 2.5rem;
width: 100%;
max-width: 30rem;
padding-inline: 0.75rem 0.5rem;
border: 1px solid var(--sl-color-gray-5);
border-radius: 0.75rem;
background-color: var(--sl-color-gray-6);
color: var(--sl-color-gray-3);
font-size: var(--sl-text-sm);
transition:
border-color 0.12s,
color 0.12s;
}
button[data-open-modal]:hover {
border-color: var(--sl-color-gray-4);
color: var(--sl-color-gray-1);
background-color: var(--sl-color-gray-6);
}
button[data-open-modal] > kbd {
gap: 0.25rem;
padding: 0;
background: transparent;
}
button[data-open-modal] > kbd > kbd {
padding: 0.05rem 0.35rem;
border: 1px solid var(--sl-color-gray-5);
border-radius: 0.3rem;
background-color: var(--sl-color-black);
font-family: var(--__sl-font-mono);
font-size: 0.6875rem;
color: var(--sl-color-gray-3);
}
dialog {
border-radius: 1rem;
}
}
/* ---- Sidebar ----------------------------------------------------------- */
@media (min-width: 50rem) {
.sidebar-pane {
--ch-sidebar-inset: 1rem;
inset-block-start: calc(var(--sl-nav-height) + var(--ch-sidebar-inset));
inset-block-end: var(--ch-sidebar-inset);
inset-inline-start: var(--ch-sidebar-inset);
width: calc(var(--sl-sidebar-width) - var(--ch-sidebar-inset));
border-inline-end: 0;
border-radius: 1rem;
background-color: var(--sl-color-bg-sidebar);
box-shadow: inset 0 0 0 1px var(--ch-panel-ring);
}
.sidebar-content {
padding: 1rem 0.75rem 0;
}
.sidebar-content::after {
display: none;
}
}
/* Mobile drawer footer (social icons + theme toggle) */
.mobile-preferences {
border-top-color: var(--sl-color-gray-5);
}
/* ---- Right rail (table of contents) ----------------------------------- */
.right-sidebar {
border-inline-start: 0;
}
.right-sidebar-panel {
padding: 1.75rem 1rem;
}
.right-sidebar-panel h2 {
display: flex;
align-items: center;
gap: 0.5rem;
margin-bottom: 0.5rem;
padding-inline: 0.625rem;
font-size: 0.6875rem;
font-weight: 700;
letter-spacing: 0.06em;
text-transform: uppercase;
color: var(--sl-color-gray-3);
}
.right-sidebar-panel h2::before {
content: '';
width: 0.875rem;
height: 0.875rem;
flex-shrink: 0;
background-color: currentColor;
-webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath d='M4 6h16v2H4zm4 5h12v2H8zm-4 5h16v2H4z'/%3E%3C/svg%3E")
center / contain no-repeat;
mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath d='M4 6h16v2H4zm4 5h12v2H8zm-4 5h16v2H4z'/%3E%3C/svg%3E")
center / contain no-repeat;
}
starlight-toc a {
--pad-inline: 0.625rem;
padding-block: 0.3rem;
border-radius: 0.375rem;
font-size: var(--sl-text-sm);
line-height: 1.35;
color: var(--sl-color-gray-3);
transition:
background-color 0.12s,
color 0.12s;
}
starlight-toc a:hover {
color: var(--sl-color-white);
background-color: var(--ch-hover-bg);
}
starlight-toc a[aria-current='true'] {
color: var(--sl-color-text-accent);
background-color: var(--ch-pill-bg);
}
/* List only the headings, not the page title itself (both TOC renderers). */
:is(starlight-toc, mobile-starlight-toc) li:has(> a[href='#_top']) {
display: none;
}
/* Mobile "On this page" bar */
mobile-starlight-toc nav {
border-top-color: var(--sl-color-gray-5);
}
mobile-starlight-toc summary {
border-bottom-color: var(--sl-color-gray-5);
}
mobile-starlight-toc .toggle {
border-radius: 0.5rem;
border-color: var(--sl-color-gray-5);
}
/* ---- Content column ---------------------------------------------------- */
.content-panel {
padding: 2rem var(--sl-content-pad-x) 0.5rem;
}
.content-panel + .content-panel {
border-top: 0;
padding-top: 0.75rem;
}
.sl-markdown-content :is(h1, h2, h3, h4, h5, h6):not(:where(.not-content *)) {
font-weight: 600;
letter-spacing: -0.015em;
text-wrap: balance;
}
.sl-markdown-content :not(h1, h2, h3, h4, h5, h6) + h2:not(:where(.not-content *)) {
margin-top: 2.75rem;
}
.sl-markdown-content :not(h1, h2, h3, h4, h5, h6) + h3:not(:where(.not-content *)) {
margin-top: 2rem;
}
.sl-markdown-content :is(p, li, td, dd, blockquote) a:not(:where(.not-content *)) {
color: var(--sl-color-text-accent);
text-decoration: underline;
text-decoration-color: color-mix(in srgb, currentColor 40%, transparent);
text-decoration-thickness: 1px;
text-underline-offset: 0.2em;
transition: text-decoration-color 0.12s;
}
.sl-markdown-content :is(p, li, td, dd, blockquote) a:hover:not(:where(.not-content *)) {
color: var(--sl-color-text-accent);
text-decoration-color: currentColor;
}
.sl-markdown-content code:not(:where(.not-content *)) {
padding: 0.1em 0.4em;
border-radius: 0.375rem;
box-shadow: inset 0 0 0 1px var(--sl-color-gray-5);
font-size: 0.875em;
}
.sl-markdown-content blockquote:not(:where(.not-content *)) {
border-inline-start: 2px solid var(--sl-color-gray-4);
color: var(--sl-color-gray-2);
}
.sl-markdown-content hr:not(:where(.not-content *)) {
border-color: var(--sl-color-gray-5);
}
.sl-markdown-content th:not(:where(.not-content *)) {
font-size: var(--sl-text-sm);
color: var(--sl-color-gray-2);
}
.sl-markdown-content :is(th, td):not(:where(.not-content *)) {
border-bottom-color: var(--sl-color-gray-5);
}
.sl-markdown-content kbd:not(:where(.not-content *)) {
padding: 0.1em 0.4em;
border: 1px solid var(--sl-color-gray-5);
border-radius: 0.3rem;
background-color: var(--sl-color-gray-6);
font-family: var(--__sl-font-mono);
font-size: 0.8em;
}
/* Asides: rounded, quietly tinted cards instead of a heavy left border. */
.starlight-aside {
padding: 1rem 1.125rem;
border: 1px solid color-mix(in srgb, var(--sl-color-asides-border) 28%, transparent);
border-radius: 0.75rem;
background-color: color-mix(in srgb, var(--sl-color-asides-border) 6%, transparent);
color: var(--sl-color-text);
}
.starlight-aside__title {
font-size: var(--sl-text-sm);
color: var(--sl-color-white);
}
.starlight-aside__icon {
color: var(--sl-color-asides-border);
}
.starlight-aside__content a {
color: var(--sl-color-text-accent);
}
/* Code blocks (Expressive Code) */
.expressive-code .frame {
box-shadow: none;
}
/* Search dialog: copper focus ring on the query box instead of the browser default. */
#starlight__search .pagefind-ui__search-input:focus {
outline: 2px solid var(--sl-color-accent);
outline-offset: -1px;
}
/* ---- Footer: pagination cards, then meta ------------------------------
* The order comes from the Footer.astro override, not CSS `order`, so that
* keyboard focus order follows what is on screen (WCAG 2.4.3).
* ---------------------------------------------------------------------- */
footer .meta a:hover {
color: var(--sl-color-white);
}
.pagination-links {
gap: 0.875rem;
margin-top: 3rem;
}
.pagination-links a {
gap: 0.75rem;
padding: 0.875rem 1rem;
border: 1px solid var(--sl-color-gray-5);
border-radius: 0.75rem;
box-shadow: none;
font-size: var(--sl-text-xs);
color: var(--sl-color-gray-3);
transition:
border-color 0.15s,
transform 0.15s;
}
.pagination-links a:hover {
border-color: var(--sl-color-accent);
transform: translateY(-1px);
}
.pagination-links svg {
font-size: 1.125rem;
color: var(--sl-color-gray-3);
}
.pagination-links .link-title {
font-size: var(--sl-text-base);
font-weight: 500;
color: var(--sl-color-white);
transition: color 0.15s;
}
.pagination-links a:hover .link-title {
color: var(--sl-color-text-accent);
}
/* ---- Built-in Starlight cards, if used in content ---------------------- */
.sl-link-card {
border-color: var(--sl-color-gray-5);
border-radius: 0.75rem;
box-shadow: none;
}
.sl-link-card:hover {
background: transparent;
border-color: var(--sl-color-accent);
}
.sl-link-card .title {
font-size: var(--sl-text-base);
}
.card {
border-color: var(--sl-color-gray-5);
border-radius: 0.75rem;
}
/* ---- Print -------------------------------------------------------------
* Starlight's print.css forces a light palette, but it is unlayered too, so
* it ties with this file's :root on specificity and loses on document order
* (it is linked first). Without this block a dark-mode reader prints light
* text on a near-black page. Listing [data-theme='dark'] as well keeps this
* ahead of the light-mode block below it.
* ---------------------------------------------------------------------- */
@media print {
:root,
:root[data-theme='dark'] {
--sl-color-white: #1a1b1e;
--sl-color-gray-1: #2b2d32;
--sl-color-gray-2: #545962;
--sl-color-gray-3: #6d747f;
--sl-color-gray-4: #c2c8d2;
--sl-color-gray-5: #e3e7ed;
--sl-color-gray-6: #eff2f6;
--sl-color-gray-7: #f7f8fa;
--sl-color-black: #ffffff;
--sl-color-accent-low: #f8e9db;
--sl-color-accent: #a35d1f;
--sl-color-accent-high: #5d3411;
--sl-color-text: var(--sl-color-gray-1);
--sl-color-text-accent: #9a5619;
--sl-color-text-invert: #ffffff;
--sl-color-bg: var(--sl-color-black);
--sl-color-bg-nav: var(--sl-color-black);
--sl-color-bg-sidebar: var(--sl-color-black);
--sl-color-bg-inline-code: var(--sl-color-gray-6);
--ch-hover-bg: transparent;
--ch-pill-bg: transparent;
--ch-panel-ring: transparent;
--ch-on-accent: #ffffff;
}
}
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