/* Bläck's developer pages: a look of their own, made for reading and looking things up. Light or dark as
   the reader's system is; code always on dark. */
:root {
  --bg: #fbfbfd;
  --side: #f3f4f8;
  --text: #1c1f2a;
  --dim: #5c6273;
  --faint: #8b90a0;
  --line: #e3e5ec;
  --accent: #4a55d4;
  --accent-soft: #eceefd;
  --code-bg: #161925;
  --code-text: #dfe3f0;
  --inline-bg: #eef0f5;
  --warn: #b25b00;
  --mono: ui-monospace, 'JetBrains Mono', 'SF Mono', 'Cascadia Code', Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11131b;
    --side: #161925;
    --text: #e3e6ef;
    --dim: #a2a8ba;
    --faint: #737a8e;
    --line: #262a38;
    --accent: #8f98ff;
    --accent-soft: #1e2240;
    --code-bg: #0b0d14;
    --inline-bg: #1e2230;
    --warn: #f0a050;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, kbd, pre { font-family: var(--mono); font-size: 0.88em; }
:not(pre) > code { background: var(--inline-bg); padding: 0.1em 0.38em; border-radius: 5px; }

/* The bar along the top. */
.d-top { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px; height: 56px; padding: 0 20px; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.d-brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; white-space: nowrap; }
.d-brand:hover { text-decoration: none; }
.d-brand b { font-weight: 500; color: var(--dim); }
.d-version { font: 12px var(--mono); color: var(--faint); border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px; white-space: nowrap; }
.d-search { position: relative; flex: 1; max-width: 420px; margin-left: auto; }
.d-search input { width: 100%; font: inherit; font-size: 14px; color: var(--text); background: var(--side); border: 1px solid var(--line); border-radius: 8px; padding: 7px 34px 7px 12px; }
.d-search input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.d-search kbd { position: absolute; right: 8px; top: 7px; font-size: 11px; color: var(--faint); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; }
#d-results { position: absolute; top: 42px; left: 0; right: 0; margin: 0; padding: 6px; list-style: none; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.35); max-height: 60vh; overflow: auto; }
#d-results a { display: block; padding: 7px 10px; border-radius: 6px; color: var(--text); }
#d-results a:hover, #d-results a.on { background: var(--accent-soft); text-decoration: none; }
#d-results small { display: block; color: var(--faint); font-size: 12px; }
#d-results .none { padding: 8px 10px; color: var(--faint); font-size: 14px; }
.d-links { display: flex; gap: 16px; font-size: 14px; white-space: nowrap; }
.d-links a { color: var(--dim); }
.d-links a[aria-current] { color: var(--text); font-weight: 600; }
.d-home { font-family: Georgia, serif; letter-spacing: 0.08em; }

/* Three columns: contents, the page, and what's on it. */
.d-wrap { display: grid; grid-template-columns: 260px minmax(0, 1fr) 220px; max-width: 1440px; margin: 0 auto; }
.d-nav { position: sticky; top: 56px; align-self: start; height: calc(100vh - 56px); overflow: auto; padding: 24px 16px 40px 24px; border-right: 1px solid var(--line); background: var(--side); }
.d-nav summary { display: none; }
.d-nav p { margin: 18px 0 6px; font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); }
.d-nav p:first-of-type { margin-top: 0; }
.d-nav ul { list-style: none; margin: 0; padding: 0; }
.d-nav a { display: block; padding: 4px 10px; border-radius: 6px; color: var(--dim); font-size: 14.5px; }
.d-nav a:hover { color: var(--text); background: var(--line); text-decoration: none; }
.d-nav a[aria-current] { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.d-main { min-width: 0; padding: 40px 48px 80px; }
.d-article { max-width: 780px; }
.d-toc { position: sticky; top: 56px; align-self: start; max-height: calc(100vh - 56px); overflow: auto; padding: 40px 20px; font-size: 13px; }
.d-toc p { margin: 0 0 8px; font-weight: 600; color: var(--faint); text-transform: uppercase; font-size: 11px; letter-spacing: 0.06em; }
.d-toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.d-toc a { display: block; padding: 3px 0 3px 12px; margin-left: -1px; border-left: 2px solid transparent; color: var(--dim); }
.d-toc .l3 a { padding-left: 24px; font-size: 12.5px; }
.d-toc a.on { color: var(--accent); border-left-color: var(--accent); }

/* The text. */
.d-article h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 16px; }
.d-article h2 { font-size: 23px; letter-spacing: -0.01em; margin: 44px 0 12px; padding-top: 12px; border-top: 1px solid var(--line); }
.d-article h3 { font-size: 18px; margin: 30px 0 8px; }
.d-article h1, .d-article h2, .d-article h3 { position: relative; }
.anchor { position: absolute; left: -1.1em; color: var(--faint); opacity: 0; font-weight: 400; }
h1:hover .anchor, h2:hover .anchor, h3:hover .anchor, .member:hover > .anchor { opacity: 1; text-decoration: none; }
.d-article ul { padding-left: 1.3em; }
.d-article li { margin: 4px 0; }
.d-article li::marker { color: var(--faint); }
.d-lead { font-size: 18px; color: var(--dim); }
.table { overflow-x: auto; margin: 16px 0; border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { text-align: left; vertical-align: top; padding: 8px 12px; border-bottom: 1px solid var(--line); }
tr:last-child td { border-bottom: 0; }
th { background: var(--side); font-weight: 600; }
td:first-child { white-space: nowrap; }

/* Code, always on dark, with a copy button. */
.code { position: relative; margin: 16px 0; }
pre { margin: 0; overflow-x: auto; background: var(--code-bg); color: var(--code-text); border-radius: 10px; padding: 16px 18px; line-height: 1.55; }
pre[data-lang]:not([data-lang=''])::before { content: attr(data-lang); position: absolute; top: 6px; right: 52px; font-size: 11px; color: #6c7390; text-transform: uppercase; }
.copy { position: absolute; top: 6px; right: 8px; font: 11px var(--sans); color: #aab1c8; background: #262b3c; border: 0; border-radius: 5px; padding: 3px 8px; cursor: pointer; opacity: 0; transition: opacity 0.15s; }
.code:hover .copy, .copy:focus { opacity: 1; }
pre .k { color: #c792ea; }
pre .s { color: #c3e88d; }
pre .p { color: #82aaff; }
pre .n { color: #f78c6c; }
pre .t { color: #ffcb6b; }
pre .c { color: #6c7390; font-style: italic; }

/* The front page. */
.d-hero h1 { font-size: 40px; }
.d-hero > p { font-size: 18px; color: var(--dim); }
.d-cards { list-style: none; padding: 0 !important; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 24px 0 8px; }
.d-cards a { display: block; height: 100%; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); }
.d-cards a:hover { border-color: var(--accent); text-decoration: none; background: var(--accent-soft); }
.d-cards b { display: block; margin-bottom: 4px; }
.d-cards span { color: var(--dim); font-size: 14px; }

/* The reference. */
.decl { margin-top: 12px; }
.kind { font: 12px var(--mono); font-weight: 400; color: var(--faint); border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; vertical-align: middle; }
.group { margin: 28px 0 0; padding-left: 16px; border-left: 3px solid var(--accent-soft); }
.member { position: relative; margin: 14px 0; }
.member > .anchor { top: 8px; }
.sig { padding: 10px 14px; border-radius: 8px; font-size: 0.86em; }
.doc { color: var(--text); }
.member .doc { margin: 6px 2px 0; color: var(--dim); font-size: 15px; }
.member .doc p { margin: 0 0 6px; }
.note { margin: 14px 0; padding: 10px 14px; border-radius: 8px; background: var(--accent-soft); font-size: 14.5px; }
.note p { margin: 0; }
.intro { padding: 4px 0 8px; }

/* The examples. */
.d-examples { list-style: none; padding: 0 !important; display: grid; gap: 14px; }
.ex { border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; }
.ex-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px; }
.ex-head h2 { font-size: 18px; margin: 0; padding: 0; border: 0; }
.tag { font-size: 12px; border-radius: 999px; padding: 1px 9px; background: var(--side); color: var(--dim); border: 1px solid var(--line); }
.tag.sandboxed { color: #1f7a4d; border-color: #9fd8b9; background: #eaf8f0; }
.tag.window { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); background: color-mix(in srgb, var(--warn) 8%, transparent); }
@media (prefers-color-scheme: dark) { .tag.sandboxed { color: #7ee0aa; border-color: #2d6b4a; background: #12291e; } }
.ex p { margin: 8px 0 0; }
.shows { color: var(--dim); font-size: 15px; }
.shows b { color: var(--text); margin-right: 4px; }
.perms code { font-size: 12px; }
.dim { color: var(--faint); font-size: 14px; }
.ex-links { display: flex; gap: 16px; font-size: 14px; }

.d-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 780px; margin-top: 56px; }
.d-pager a { padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); font-weight: 600; }
.d-pager a:hover { border-color: var(--accent); text-decoration: none; }
.d-pager a[rel='next'] { text-align: right; grid-column: 2; }
.d-pager span { display: block; font-size: 12px; font-weight: 400; color: var(--faint); }

@media (max-width: 1180px) {
  .d-wrap { grid-template-columns: 240px minmax(0, 1fr); }
  .d-toc { display: none; }
}
@media (max-width: 820px) {
  .d-top { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 10px; position: static; }
  .d-version { display: none; }
  .d-search { order: 3; flex-basis: 100%; max-width: none; }
  .d-links { margin-left: auto; gap: 12px; }
  .d-links .d-home { display: none; }
  .d-wrap { grid-template-columns: minmax(0, 1fr); }
  .d-nav { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 10px 16px; }
  .d-nav summary { display: block; cursor: pointer; font-weight: 600; color: var(--dim); }
  .d-nav:not([open]) > :not(summary) { display: none; }
  .d-main { padding: 24px 16px 60px; }
  .d-article h1, .d-hero h1 { font-size: 28px; }
  .anchor { display: none; }
  html { scroll-padding-top: 12px; }
}

/* The reference's signatures: light, on the page's own colours, so a long list of members reads easily. */
:root { --sk: #7c3aed; --ss: #1a7f37; --sp: #0550ae; --sn: #b45309; --st: #9a5b00; --sc: #6e7781; }
@media (prefers-color-scheme: dark) { :root { --sk: #c792ea; --ss: #c3e88d; --sp: #82aaff; --sn: #f78c6c; --st: #ffcb6b; --sc: #737a8e; } }
.member .sig, .decl > .sig { background: var(--side); color: var(--text); border: 1px solid var(--line); border-left: 3px solid var(--accent); }
.sig .k { color: var(--sk); }
.sig .s { color: var(--ss); }
.sig .p { color: var(--sp); }
.sig .n { color: var(--sn); }
.sig .t { color: var(--st); }
.sig .c { color: var(--sc); }