/* fotonet documentation. Layout after Apple's developer documentation: a navigator on the left,
   symbol pages with Declaration, Parameters and Topics, and a dark hero on the framework page. */

:root {
  --bg: #ffffff;
  --bg-2: #f5f5f7;
  --line: #d2d2d7;
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --link: #3047b8;
  --glacier-l: #a7cffa;
  --glacier-n: #3b5bdb;
  --code-bg: #f5f5f7;
  --tk-k: #ad3da4;
  --tk-s: #c41a16;
  --tk-n: #1c00cf;
  --tk-c: #56636f;
  --badge: #8e8e93;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --nav-w: 300px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-2: #1d1d1f;
    --line: #424245;
    --ink: #f5f5f7;
    --ink-2: #a1a1a6;
    --link: #8fa7ff;
    --code-bg: #1d1d1f;
    --tk-k: #ff7ab2;
    --tk-s: #fc6a5d;
    --tk-n: #d9c97c;
    --tk-c: #7f8c98;
    --badge: #636366;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 17px; line-height: 1.47; letter-spacing: -0.022em; -webkit-font-smoothing: antialiased; }
img, svg { display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
p, h1, h2, h3, ul, dl, dd, pre { margin: 0; }
ul { padding: 0; list-style: none; }
code, pre, kbd { font-family: var(--mono); letter-spacing: 0; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 14px; border-radius: 10px; background: var(--ink); color: var(--bg); }
.skip:focus { top: 12px; }

/* Global nav, shared with the product page */
.globalnav { background: rgba(22, 22, 23, .92); }
.globalnav-inner { width: min(1024px, calc(100% - 40px)); height: 44px; margin-inline: auto; display: flex; align-items: center; gap: 32px; }
.globalnav-logo img { width: 22px; height: 22px; }
.globalnav-list { flex: 1; display: flex; justify-content: space-between; gap: 18px; overflow-x: auto; scrollbar-width: none; }
.globalnav-list::-webkit-scrollbar { display: none; }
.globalnav-list li { flex: none; }
.globalnav-list a { font-size: 12px; color: rgba(255, 255, 255, .8); }
.globalnav-list a:hover, .globalnav-list a[aria-current] { color: #fff; text-decoration: none; }

/* Documentation bar */
.docbar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 86%, transparent); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid var(--line); }
.docbar-inner { height: 52px; padding: 0 22px; display: flex; align-items: center; gap: 16px; }
.docbar-title { font-size: 21px; font-weight: 600; color: var(--ink); letter-spacing: .011em; }
.docbar-title:hover { text-decoration: none; }
.docbar-search { margin-left: auto; display: flex; align-items: center; gap: 8px; width: min(320px, 50vw); height: 34px; padding: 0 10px; border-radius: 10px; background: var(--bg-2); color: var(--ink-2); }
.docbar-search svg, .docs-filter svg { width: 16px; height: 16px; flex: none; }
.docbar-search input, .docs-filter input { flex: 1; min-width: 0; border: 0; background: none; font: inherit; font-size: 14px; color: var(--ink); outline: none; }
.docbar-search kbd { padding: 1px 6px; border-radius: 5px; border: 1px solid var(--line); font-size: 11px; color: var(--ink-2); }
.nav-toggle { display: none; width: 34px; height: 34px; padding: 7px; border: 0; border-radius: 8px; background: none; color: var(--ink); cursor: pointer; }

/* Layout */
.docs { display: grid; grid-template-columns: var(--nav-w) minmax(0, 1fr); min-height: calc(100vh - 96px); }
.docs-nav { position: sticky; top: 53px; height: calc(100vh - 53px); display: flex; flex-direction: column; border-right: 1px solid var(--line); background: var(--bg); }
.docs-nav-scroll { flex: 1; overflow-y: auto; padding: 18px 12px 18px 18px; }
.nav-root { display: flex; align-items: center; gap: 10px; padding: 6px 8px; border-radius: 8px; font-size: 17px; font-weight: 600; color: var(--ink); }
.nav-root:hover { text-decoration: none; background: var(--bg-2); }
.nav-tree { margin-top: 10px; display: grid; gap: 4px; }
.nav-group[hidden], .nav-tree li[hidden] { display: none; }
.nav-group summary { padding: 6px 8px; list-style: none; cursor: pointer; font-size: 12px; font-weight: 600; color: var(--ink-2); text-transform: none; }
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary::before { content: "›"; display: inline-block; width: 14px; transition: transform .2s; }
.nav-group details[open] summary::before { transform: rotate(90deg); }
.nav-group ul { display: grid; gap: 1px; padding-left: 10px; }
.nav-group a { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 8px; font-size: 14px; color: var(--ink); }
.nav-group a:hover { text-decoration: none; background: var(--bg-2); }
.nav-group a[aria-current], .nav-root[aria-current] { background: color-mix(in srgb, var(--link) 12%, transparent); }
.nav-group a code { font-size: 13px; }
.docs-filter { display: flex; align-items: center; gap: 8px; margin: 10px 12px 14px; height: 32px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--line); color: var(--ink-2); }

/* Symbol badges */
.badge { flex: none; display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 4px; font-family: var(--font); font-size: 11px; font-weight: 700; color: #fff; }
.badge-class, .badge-method, .badge-fw { background: var(--badge); color: #fff; }
.badge-article { width: 14px; height: 17px; margin: 0 2px; border-radius: 2px; border: 1.5px solid var(--ink-2); background: linear-gradient(var(--ink-2), var(--ink-2)) 3px 5px / 6px 1.5px no-repeat, linear-gradient(var(--ink-2), var(--ink-2)) 3px 9px / 6px 1.5px no-repeat; }

/* Content */
.docs-content { min-width: 0; }
.doc-head, .doc-main { width: min(860px, calc(100% - 64px)); margin-inline: auto; }
.doc-head { padding: 40px 0 34px; border-bottom: 1px solid var(--line); }
.doc-hero { padding: 56px max(32px, calc((100% - 860px) / 2)) 48px; background: linear-gradient(160deg, #000 0%, #10131a 55%, #141c2c 100%); color: #f5f5f7; }
.doc-hero .doc-abstract { color: #d2d2d7; }
.doc-hero .doc-avail li { border-color: rgba(255, 255, 255, .25); color: #d2d2d7; }
.doc-crumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; font-size: 13px; color: var(--ink-2); }
.doc-eyebrow { font-size: 17px; font-weight: 600; color: var(--ink-2); }
.doc-hero .doc-eyebrow { color: var(--glacier-l); }
.docs-content h1 { margin-top: 6px; font-size: 40px; line-height: 1.1; font-weight: 700; letter-spacing: -0.01em; }
.doc-hero h1 { font-size: 64px; }
.docs-content h1.is-symbol { font-family: var(--mono); font-size: 34px; font-weight: 600; letter-spacing: -0.02em; }
.doc-abstract { margin-top: 14px; max-width: 720px; font-size: 21px; line-height: 1.38; color: var(--ink-2); }
.doc-avail { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.doc-avail li { padding: 3px 10px; border-radius: 999px; border: 1px solid var(--line); font-size: 13px; color: var(--ink-2); }

.doc-main { padding-bottom: 96px; }
.doc-main section { padding-top: 40px; }
.doc-main h2 { margin-bottom: 14px; font-size: 32px; line-height: 1.12; font-weight: 700; letter-spacing: .004em; }
.doc-body h2:not(:first-child) { margin-top: 40px; }
.doc-main h3 { margin: 30px 0 10px; font-size: 24px; line-height: 1.17; font-weight: 600; }
.doc-main p { max-width: 760px; margin-bottom: 14px; }
.doc-main p code, .doc-main dd code, .doc-main td code, .doc-links p code { padding: 1px 5px; border-radius: 5px; background: var(--code-bg); font-size: .86em; }

.doc-code { position: relative; margin: 6px 0 22px; border-radius: 15px; background: var(--code-bg); border: 1px solid color-mix(in srgb, var(--line) 60%, transparent); }
.doc-code pre { overflow-x: auto; padding: 38px 20px 18px; font-size: 14px; line-height: 1.6; }
.doc-code-lang { position: absolute; left: 20px; top: 12px; font-size: 12px; font-weight: 600; color: var(--ink-2); }
.doc-copy { position: absolute; right: 10px; top: 8px; padding: 3px 10px; border: 0; border-radius: 6px; background: none; font: inherit; font-size: 12px; color: var(--link); cursor: pointer; }
.doc-copy:hover { background: color-mix(in srgb, var(--link) 10%, transparent); }
.tk-k { color: var(--tk-k); }
.tk-s { color: var(--tk-s); }
.tk-n { color: var(--tk-n); }
.tk-c { color: var(--tk-c); font-style: italic; }

.doc-params, .doc-members { display: grid; grid-template-columns: minmax(120px, max-content) 1fr; gap: 14px 24px; }
.doc-params dt code, .doc-members dt code { font-size: 15px; font-weight: 600; }
.doc-params dd, .doc-members dd { color: var(--ink); }

.doc-table-wrap { overflow-x: auto; margin: 10px 0 18px; }
.doc-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.doc-table th, .doc-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.doc-table th { font-size: 13px; font-weight: 600; color: var(--ink-2); }

.doc-note { margin: 18px 0; padding: 16px 20px; border-radius: 15px; background: color-mix(in srgb, var(--glacier-l) 16%, var(--bg)); border: 1px solid color-mix(in srgb, var(--glacier-l) 45%, transparent); }
.doc-note p { margin: 0; }

.doc-topics h2 { padding-top: 10px; border-top: 1px solid var(--line); }
.doc-topic h3 { margin-top: 18px; }
.doc-links { display: grid; gap: 18px; margin: 12px 0 8px; }
.doc-links a { display: inline-flex; align-items: center; gap: 8px; font-size: 17px; }
.doc-links code { font-size: 16px; }
.doc-links p { margin: 4px 0 0 26px; font-size: 15px; color: var(--ink-2); }

.docs-footer { padding: 22px; border-top: 1px solid var(--line); background: var(--bg-2); font-size: 12px; color: var(--ink-2); text-align: center; }

@media (max-width: 1068px) {
  .docs { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .docs-nav { position: fixed; top: 97px; left: 0; bottom: 0; z-index: 15; width: min(320px, 86vw); height: auto; transform: translateX(-102%); transition: transform .35s cubic-bezier(.16, 1, .3, 1); }
  .docs.nav-open .docs-nav { transform: none; box-shadow: 0 20px 60px rgba(0, 0, 0, .2); }
}

@media (max-width: 734px) {
  .docbar-inner { padding: 0 12px; gap: 8px; }
  .docbar-title { font-size: 17px; }
  .docbar-search kbd { display: none; }
  .doc-head, .doc-main { width: calc(100% - 32px); }
  .doc-hero { padding: 40px 16px 36px; }
  .doc-hero h1 { font-size: 44px; }
  .docs-content h1 { font-size: 32px; }
  .docs-content h1.is-symbol { font-size: 24px; }
  .doc-abstract { font-size: 19px; }
  .doc-main h2 { font-size: 26px; }
  .doc-params, .doc-members { grid-template-columns: 1fr; gap: 4px; }
  .doc-params dd, .doc-members dd { margin-bottom: 12px; }
}

/* The smallest phones (320 px): the search box gives up its shortcut hint and shrinks. */
@media (max-width: 374px) {
  .docbar-search { width: auto; flex: 1 1 0; min-width: 0; }
  .docbar-search kbd { display: none; }
  .docbar-title { font-size: 17px; }
}

/* long paths and commands in running text wrap instead of widening the page on phones */
#doc :not(pre) > code { overflow-wrap: anywhere; }

/* Desktop renders as if the browser were zoomed to 80%, so the sections fit a
   1080p screen. Scripts measure in a zoom-proof way (visual sizes are divided by the zoom). */
@media (min-width: 1069px) {
  html { zoom: .8; }
}