/* Shared token contract, layout and components. Palettes contain no layout. */
:root {
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, monospace;
  --font-body: var(--font-sans);
  --font-heading: var(--font-sans);
  --space-unit: 0.25rem;
  --space-1: var(--space-unit);
  --space-2: calc(2 * var(--space-unit));
  --space-3: calc(3 * var(--space-unit));
  --space-4: calc(4 * var(--space-unit));
  --space-5: calc(5 * var(--space-unit));
  --space-6: calc(6 * var(--space-unit));
  --space-7: calc(7 * var(--space-unit));
  --space-8: calc(8 * var(--space-unit));
  --radius-md: 6px;
  --reading-width: 58rem;
  --site-width: 72rem;
  --nav-bg: var(--color-bg);
  --nav-text: var(--color-text);
  --footer-bg: var(--color-surface);
  --footer-text: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
}
[data-font="sans"] { --font-body: var(--font-sans); }
[data-font="serif"] { --font-body: var(--font-serif); }
[data-font="mono"] { --font-body: var(--font-mono); }
[data-heading-font="serif"] { --font-heading: var(--font-serif); }
[data-heading-font="mono"] { --font-heading: var(--font-mono); }
[data-density="comfortable"] { --space-unit: 0.25rem; }
[data-density="compact"] { --space-unit: 0.2rem; line-height: 1.45; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); }
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
}
a { color: var(--color-primary); text-underline-offset: 0.2em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 0.15em; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; overflow-wrap: anywhere; }
h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); }
h2 { font-size: 1.8rem; }
p, ul, ol, dl, pre, blockquote, table { margin-block: 0 1.25rem; }
img, svg, video { max-width: 100%; }
img { height: auto; }
hr { border: 0; border-top: 1px solid var(--color-border); margin-block: 2rem; }
blockquote { border-inline-start: 3px solid var(--color-border); margin-inline: 0; padding-inline-start: 1.25rem; }
.shell, .container { width: min(100% - 2rem, var(--site-width)); margin-inline: auto; }
.page-content { flex: 1; min-width: 0; padding-block: 2rem 3rem; }
.prose { max-width: var(--reading-width); overflow-wrap: anywhere; }
.prose[data-publication] { padding: calc(4 * var(--space-unit)); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.prose[data-publication] > :last-child { margin-block-end: 0; }
.prose[data-publication] h1 { font-size: 1.15rem; font-weight: 600; margin-block: 0 0.4rem; }
.stack { display: grid; gap: calc(5 * var(--space-unit)); }
.site-header { background: var(--nav-bg); color: var(--nav-text); }
.site-header a { color: inherit; }
.site-footer { background: var(--footer-bg); color: var(--footer-text); }
.site-header { border-bottom: 1px solid var(--color-border); }
.site-footer { border-top: 1px solid var(--color-border); padding-block: 1.5rem; overflow-wrap: anywhere; }
.site-footer p:last-child { margin-bottom: 0; }
.site-nav { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 0.5rem; padding-block: calc(5 * var(--space-unit)); }
.site-brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 500; font-size: 1rem; line-height: 1.4; max-width: 100%; text-decoration: none; }
.site-brand span { min-width: 0; overflow-wrap: anywhere; }
.appearance-icon { display: inline-block; width: 1.2em; height: 1.2em; flex: none; vertical-align: -.2em; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.nav-list, .nav-children { list-style: none; padding: 0; margin: 0; }
.nav-list { display: flex; flex-direction: column; align-items: stretch; gap: 0.25rem; min-width: 0; text-align: start; }
.nav-list > li { max-width: 100%; }
.nav-link, .nav-group summary { display: block; padding: 0.5rem; }
.nav-group summary { display: list-item; margin-inline-start: 1.25rem; cursor: pointer; overflow-wrap: anywhere; }
.nav-children { border-inline-start: 2px solid var(--color-border); margin-inline-start: 0.5rem; padding-inline-start: 0.5rem; }
.theme-form { margin: 0; }
.button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  min-height: 2.75rem;
  font: inherit;
  font-weight: 600;
  line-height: 1.4;
  background: var(--color-primary);
  color: var(--color-on-primary);
  text-decoration: none;
  cursor: pointer;
  overflow-wrap: anywhere;
  max-width: 100%;
}
.button:hover, .btn:hover { text-decoration: underline; }
.button-secondary, .btn-link { background: transparent; color: var(--color-primary); }
button:disabled { cursor: wait; opacity: 0.7; }
.contact-form { max-width: 42rem; justify-items: start; }
.field, .form-group { display: grid; gap: 0.4rem; width: 100%; }
label { font-weight: 600; }
input:not([type="hidden"]), textarea, select, .form-control {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 2.75rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font: inherit;
}
input[type="checkbox"], input[type="radio"] { width: auto; min-height: auto; }
textarea { resize: vertical; }
.notice { border-inline-start: 4px solid var(--color-primary); background: var(--color-surface); padding: 1rem; }
.notice-error { color: var(--color-error); background: var(--color-error-surface); border-color: var(--color-error); }
table { border-collapse: collapse; display: block; max-width: 100%; overflow-x: auto; }
th, td { border: 1px solid var(--color-border); padding: 0.5rem 0.75rem; text-align: start; }
th { background: var(--color-surface); }
code, pre { font-family: var(--font-mono); }
code:not(pre code) { background: var(--color-code); border: 1px solid var(--color-border); border-radius: 0.2rem; padding: 0.1em 0.3em; font-size: 0.92em; }
pre { background: var(--color-code); border: 1px solid var(--color-border); border-radius: var(--radius-md); max-width: 100%; overflow-x: auto; padding: 1rem; line-height: 1.5; tab-size: 4; }
pre code { padding: 0; border-radius: 0; background: transparent; white-space: pre; }
.code-block { margin-bottom: 1.25rem; min-width: 0; }
.code-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.5rem 0.75rem; background: var(--color-surface); border: 1px solid var(--color-border); border-bottom: 0; border-radius: var(--radius-md) 0.35rem 0 0; }
.code-label { font-size: 0.9rem; font-weight: 600; overflow-wrap: anywhere; }
.code-status { flex-basis: 100%; font-size: 0.9rem; color: var(--color-text-muted); }
.code-toolbar .button { padding: 0.35rem 0.75rem; font-size: 0.9rem; margin-inline-start: auto; }
.code-block pre { margin: 0; border-start-start-radius: 0; border-start-end-radius: 0; }
pre code.hljs { padding: 0; overflow: visible; }
.skip-link { position: absolute; top: -10rem; left: 1rem; z-index: 10; background: var(--color-bg); padding: 0.75rem 1rem; border: 2px solid var(--color-focus); }
.skip-link:focus { top: 0.5rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
/* Compatibility with previously generated image/owner snippets. */
.img-fluid { max-width: 100%; height: auto; }
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.icon { display: inline-block; vertical-align: -0.15em; flex-shrink: 0; }
.icon-muted { color: var(--color-text-muted); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 0.4rem 0.75rem; list-style: none; padding: 0; }
.breadcrumbs li + li::before { content: "/"; color: var(--color-text-muted); margin-inline-end: 0.75rem; }
.reading-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-block: 1.5rem; }
.reading-panel { max-width: var(--reading-width); padding: 1rem; margin-block: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.reading-panel h2 { font-size: 1.2rem; }
.reading-panel summary { font-weight: 600; cursor: pointer; }
.reading-panel ul, .reading-panel ol { margin-block: 0.75rem 0; }
.heading-level-2 { margin-inline-start: 0.75rem; }
.heading-level-3, .heading-level-4, .heading-level-5, .heading-level-6 { margin-inline-start: 1.5rem; }
.notebook-list li { margin-block: 0.5rem; }
@media (max-width: 40rem) {
  .site-nav { gap: 0.75rem; }
  .page-content { padding-block: 1.5rem 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}

.site-nav .button { min-height: 2rem; }
.site-header .button-secondary { color: var(--nav-text); border-color: transparent; gap: 0.45rem; padding-inline: 0.5rem; }
.site-header .button-secondary:hover { border-color: currentColor; text-decoration: none; }
.site-menu > summary { list-style: none; }
.site-menu > summary::-webkit-details-marker { display: none; }
.site-menu[open] > summary { border-color: currentColor; }
.appearance-picker { position: relative; }
.appearance-picker summary { cursor: pointer; padding: 0.5rem; }
.appearance-picker form { padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-bg); color: var(--color-text); }

[hidden] { display: none !important; }
.site-brand { min-width: 0; }
.theme-form .control-label { max-width: 3.5em; }
.nav-panel { position: absolute; inset-block-start: 100%; inset-inline-start: 0; z-index: 10; display: flex; flex-direction: column; align-items: stretch; gap: 1rem; width: min(28rem, 100%); padding: 1rem; background: var(--nav-bg); color: var(--nav-text); border: 1px solid var(--color-border); border-radius: var(--radius-md); text-align: start; }
.appearance-picker form { position: static; width: 100%; }
.nav-list a, .nav-group summary { overflow-wrap: anywhere; }