/* easl documentation site */

:root {
  --bg: #fdfcfa;
  --bg-raised: #f4f1ec;
  --bg-sidebar: #f7f5f1;
  --text: #26282e;
  --text-dim: #6d6f78;
  --accent: #7048c8;
  --accent-soft: #ede7fa;
  --border: #e3dfd7;
  --code-bg: #f0ebdf;
  /* syntax colors */
  --hl-comment: #969288;
  --hl-string: #2f7a4d;
  --hl-number: #a35b1e;
  --hl-keyword: #7048c8;
  --hl-type: #1d6d9c;
  --hl-call: #45475a;
  --hl-paren: #a5a199;
  --hl-annotation: #b0388f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171c;
    --bg-raised: #1e2027;
    --bg-sidebar: #1a1c22;
    --text: #d7dae2;
    --text-dim: #8a8e99;
    --accent: #a98cf0;
    --accent-soft: #2a2440;
    --border: #2a2d36;
    --code-bg: #232733;
    --hl-comment: #6d7180;
    --hl-string: #7fc79a;
    --hl-number: #e0a06a;
    --hl-keyword: #a98cf0;
    --hl-type: #72b5dd;
    --hl-call: #ccd0da;
    --hl-paren: #5b5f6b;
    --hl-annotation: #dd7ec1;
  }
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
}

/* ---- sidebar ---- */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 16.5rem;
  overflow-y: auto;
  padding: 1.4rem 1.2rem 2rem;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  font-size: 0.92rem;
}

.logo {
  margin-bottom: 1.4rem;
}

.logo a {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.logo .tagline {
  display: block;
  color: var(--text-dim);
  font-size: 0.74rem;
  margin-top: 0.15rem;
}

.nav-section {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-dim);
  margin: 1.3rem 0 0.4rem;
}

.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar li {
  margin: 0;
}

.sidebar li > a {
  display: block;
  padding: 0.22rem 0.55rem;
  border-radius: 6px;
  color: var(--text);
  text-decoration: none;
}

.sidebar li > a:hover {
  background: var(--accent-soft);
}

.sidebar li.current > a {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.sidebar ul.toc {
  margin: 0.15rem 0 0.4rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--border);
  margin-left: 0.55rem;
}

.sidebar ul.toc a {
  padding: 0.12rem 0.45rem;
  color: var(--text-dim);
  font-size: 0.86rem;
  font-weight: 400;
}

.sidebar ul.toc a:hover {
  color: var(--accent);
  background: none;
}

/* ---- main content ---- */

main {
  margin-left: 16.5rem;
  padding: 2.4rem 2.6rem 5rem;
}

article {
  max-width: 46rem;
}

h1, h2, h3 {
  line-height: 1.25;
  font-weight: 650;
}

h1 {
  font-size: 1.9rem;
  margin: 0 0 1.1rem;
}

h2 {
  font-size: 1.35rem;
  margin: 2.4rem 0 0.7rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}

h3 {
  font-size: 1.05rem;
  margin: 1.9rem 0 0.45rem;
}

h3 code {
  font-size: 1rem;
  background: var(--accent-soft);
  color: var(--accent);
}

a.hlink {
  margin-left: 0.45rem;
  color: var(--border);
  text-decoration: none;
  font-weight: 400;
  opacity: 0;
  transition: opacity 0.12s;
}

h2:hover a.hlink,
h3:hover a.hlink {
  opacity: 1;
  color: var(--accent);
}

p {
  margin: 0.7rem 0;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

strong {
  font-weight: 650;
}

/* ---- code ---- */

code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.87em;
  background: var(--code-bg);
  padding: 0.1em 0.32em;
  border-radius: 4px;
}

pre.code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  overflow: auto;
  max-height: 34rem;
  line-height: 1.5;
  margin: 0.8rem 0 1rem;
}

.code-playground {
  margin: -0.6rem 0 1rem;
  text-align: right;
  font-size: 0.8rem;
}

.code-playground a::after {
  content: " →";
}

pre.code code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
}

/* easl and GLSL syntax highlighting */
:is(.easl, .glsl) .c { color: var(--hl-comment); font-style: italic; }
:is(.easl, .glsl) .s { color: var(--hl-string); }
:is(.easl, .glsl) .n { color: var(--hl-number); }
:is(.easl, .glsl) .k { color: var(--hl-keyword); font-weight: 600; }
:is(.easl, .glsl) .t { color: var(--hl-type); }
:is(.easl, .glsl) .f { color: var(--hl-call); font-weight: 550; }
:is(.easl, .glsl) .p { color: var(--hl-paren); }
:is(.easl, .glsl) .a { color: var(--hl-annotation); }

/* ---- live previews ---- */

.live-preview {
  margin: 1rem 0 1.4rem;
}

.live-preview canvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #000;
}

.live-console {
  margin: 0.5rem 0 0;
  padding: 0.6rem 0.8rem;
  height: 7.5rem;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--code-bg);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.5;
}

.live-console:empty::before {
  content: attr(data-placeholder);
  color: var(--text-dim);
}

.live-preview-edit {
  display: inline-block;
  margin-top: 0.45rem;
  font-size: 0.85rem;
}

.live-preview-edit::after {
  content: " →";
}

.live-preview-note {
  display: none;
  margin: 0.5rem 0 0;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.live-preview.no-webgpu canvas,
.live-preview.failed canvas {
  display: none;
}

.live-preview.no-webgpu .no-webgpu-note,
.live-preview.failed .failed-note {
  display: block;
}

/* ---- tables ---- */

table {
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.92rem;
  width: 100%;
}

th, td {
  text-align: left;
  padding: 0.42rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-weight: 600;
  border-bottom: 2px solid var(--border);
}

/* ---- lists ---- */

article ul, article ol {
  padding-left: 1.4rem;
}

article li {
  margin: 0.25rem 0;
}

/* ---- function index ---- */

#fn-filter {
  width: 100%;
  font-size: 1rem;
  font-family: inherit;
  padding: 0.55rem 0.8rem;
  margin: 0.6rem 0 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-raised);
  color: var(--text);
}

#fn-filter:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

ul.fn-index {
  list-style: none;
  padding: 0;
  margin: 0;
  columns: 2;
  column-gap: 2.5rem;
}

ul.fn-index li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.14rem 0;
  break-inside: avoid;
}

ul.fn-index li[hidden] {
  display: none;
}

ul.fn-index a {
  text-decoration: none;
}

ul.fn-index a:hover code {
  background: var(--accent-soft);
}

.fn-page {
  color: var(--text-dim);
  font-size: 0.78rem;
  white-space: nowrap;
}

/* ---- narrow screens ---- */

@media (max-width: 52rem) {
  .sidebar {
    position: static;
    width: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  main {
    margin-left: 0;
    padding: 1.6rem 1.2rem 3rem;
  }
  ul.fn-index {
    columns: 1;
  }
}