/* APS documentation: shared styles for the standard, methodology and governance pages */
:root {
  --page: #F6F7F9;
  --card: #FFFFFF;
  --ink: #1B1E23;
  --ink-2: #454B54;
  --ink-3: #6B717B;
  --line: #E2E5EA;
  --line-2: #CDD2D9;
  --soft: #F1F3F5;
  --accent: #1A5BD6;
  --accent-ink: #1447AD;
  --accent-bg: #EAF1FE;
  --good: #12805A;
  --good-bg: #E7F5EE;
  --bad: #C5362C;
  --bad-bg: #FCEDEB;
  --warn: #8A5A00;
  --warn-bg: #FEF5E1;
  --draft: #5B3FC4;
  --draft-bg: #F1EDFD;
  --sans: "Inter", "Helvetica Neue", Arial, sans-serif;
  --display: "Inter Tight", "Inter", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --top: 64px;
  --sub: 56px;
}
* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--top) + var(--sub) + 16px); }
body { margin: 0; background: var(--page); color: var(--ink); font: 400 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; color: inherit; cursor: pointer; }

/* ---------- Top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 40; height: var(--top); background: var(--card); border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 28px; padding: 0 24px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font: 600 17px/1 var(--display); letter-spacing: -.01em; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand i { width: 28px; height: 28px; border-radius: 7px; background: var(--ink); color: #fff; display: grid; place-items: center; font: 700 10px/1 var(--display); font-style: normal; letter-spacing: .02em; }
.brand small { font: 400 17px/1 var(--display); color: var(--ink-3); }
.tabs { display: flex; align-self: stretch; gap: 4px; }
.tabs a { display: flex; align-items: center; padding: 0 12px; color: var(--ink-2); font: 500 14px/1 var(--sans); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a:hover { color: var(--ink); text-decoration: none; background: var(--soft); }
.tabs a.on { color: var(--ink); border-bottom-color: var(--ink); }
.search { position: relative; margin-left: auto; width: 300px; }
.search input { width: 100%; height: 40px; border: 0; border-radius: 8px; background: var(--soft); padding: 0 40px 0 40px; font: 400 14px/1 var(--sans); color: var(--ink); outline: none; }
.search input:focus { background: var(--card); box-shadow: 0 0 0 2px var(--accent); }
.search svg { position: absolute; left: 12px; top: 11px; width: 18px; height: 18px; color: var(--ink-3); }
.search kbd { position: absolute; right: 10px; top: 10px; font: 500 11px/18px var(--mono); padding: 0 6px; border: 1px solid var(--line-2); border-radius: 4px; color: var(--ink-3); background: var(--card); }
.results { position: absolute; top: 46px; left: 0; right: 0; background: var(--card); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 12px 32px rgba(20,24,30,.14); padding: 6px; display: none; max-height: 380px; overflow: auto; }
.results.open { display: block; }
.results a { display: block; padding: 8px 10px; border-radius: 6px; color: var(--ink); font-size: 14px; line-height: 1.35; }
.results a span { display: block; font-size: 12px; color: var(--ink-3); }
.results a:hover, .results a.sel { background: var(--accent-bg); text-decoration: none; }
.results p { margin: 8px 10px; font-size: 13.5px; color: var(--ink-3); }
.home-link { font: 500 14px/1 var(--sans); color: var(--ink-2); white-space: nowrap; }
.menu { display: none; width: 40px; height: 40px; border: 0; background: none; border-radius: 50%; margin-left: -8px; }
.menu:hover { background: var(--soft); }

/* ---------- Sub bar ---------- */
.subbar { position: sticky; top: var(--top); z-index: 35; height: var(--sub); background: var(--card); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; }
.subbar h2 { margin: 0; font: 400 20px/1 var(--display); letter-spacing: -.01em; }
.subbar h2 b { font-weight: 400; color: var(--ink-3); margin-left: 8px; font-size: 14px; font-family: var(--mono); }
.btn { display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 16px; border-radius: 6px; font: 500 14px/1 var(--sans); border: 1px solid var(--line-2); background: var(--card); color: var(--accent); }
.btn:hover { text-decoration: none; background: var(--accent-bg); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-ink); }

/* ---------- Layout ---------- */
.layout { display: grid; grid-template-columns: 284px minmax(0, 1fr); min-height: calc(100vh - var(--top) - var(--sub)); }
.sidenav { position: sticky; top: calc(var(--top) + var(--sub)); height: calc(100vh - var(--top) - var(--sub)); overflow: auto; background: var(--card); border-right: 1px solid var(--line); padding: 16px 0 40px; font-size: 14px; }
.sidenav a { display: block; color: var(--ink-2); padding: 6px 16px 6px 24px; line-height: 1.35; border-radius: 0 20px 20px 0; margin-right: 12px; }
.sidenav a:hover { background: var(--soft); text-decoration: none; color: var(--ink); }
.sidenav a.on { background: var(--accent-bg); color: var(--accent-ink); font-weight: 500; }
.sidenav .grp { border-top: 1px solid var(--line); padding: 6px 0; }
.sidenav .grp:first-child { border-top: 0; }
.sidenav .grp > button { width: 100%; display: flex; align-items: center; justify-content: space-between; background: none; border: 0; padding: 10px 20px 10px 24px; font: 600 13.5px/1.3 var(--sans); color: var(--ink); text-align: left; }
.sidenav .grp > button svg { width: 18px; height: 18px; color: var(--ink-3); transition: transform .2s; }
.sidenav .grp.closed > button svg { transform: rotate(-90deg); }
.sidenav .grp.closed > div { display: none; }
.sidenav .grp > div a { padding-left: 32px; }
.sidenav .grp > div a.page { padding-left: 24px; color: var(--ink); }
.sidenav .ext::after { content: " ↗"; color: var(--ink-3); }

.scrim { display: none; }
main { padding: 28px 32px 0; min-width: 0; }
.wrap { display: grid; grid-template-columns: minmax(0, 880px) 220px; gap: 32px; justify-content: center; align-items: start; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 32px 48px 40px; min-width: 0; }
.crumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 13.5px; color: var(--ink-3); }
.crumbs a { color: var(--ink-2); }
.crumbs svg { width: 14px; height: 14px; }
.cardtop { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.helpful { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-3); white-space: nowrap; }
.helpful button { width: 30px; height: 30px; border: 0; background: none; border-radius: 50%; display: grid; place-items: center; color: var(--ink-3); }
.helpful button:hover { background: var(--soft); color: var(--ink); }
.helpful button[aria-pressed="true"] { color: var(--accent); background: var(--accent-bg); }
.helpful svg { width: 17px; height: 17px; }

/* In-card table of contents (narrow screens) */
.toc-inline { border-left: 3px solid var(--accent); padding: 4px 0 4px 16px; margin: 0 0 24px; font-size: 14px; display: none; }
.toc-inline b { display: block; font-weight: 500; margin-bottom: 4px; }
.toc-inline a { display: block; color: var(--ink-2); padding: 2px 0; }
/* Side table of contents */
.toc { position: sticky; top: calc(var(--top) + var(--sub) + 28px); font-size: 13.5px; }
.toc b { display: block; font: 600 12px/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); margin: 6px 0 12px; }
.toc a { display: block; color: var(--ink-2); padding: 5px 0 5px 14px; border-left: 2px solid var(--line); line-height: 1.35; }
.toc a:hover { color: var(--ink); text-decoration: none; }
.toc a.on { color: var(--accent-ink); border-left-color: var(--accent); font-weight: 500; }
.toc .fb { margin-top: 20px; }

/* ---------- Article typography ---------- */
article h1 { font: 400 34px/1.2 var(--display); letter-spacing: -.02em; margin: 6px 0 10px; display: flex; align-items: center; gap: 10px; }
.anchor { opacity: 0; width: 28px; height: 28px; border: 0; border-radius: 6px; background: none; display: inline-grid; place-items: center; color: var(--ink-3); flex: none; transition: opacity .15s; }
h1:hover .anchor, h2:hover .anchor, .anchor:focus { opacity: 1; }
.anchor:hover { background: var(--soft); color: var(--ink); }
.anchor svg { width: 16px; height: 16px; }
.meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13.5px; color: var(--ink-3); margin-bottom: 22px; }
.meta span b { color: var(--ink-2); font-weight: 500; }
article h2 { font: 400 26px/1.25 var(--display); letter-spacing: -.015em; margin: 48px 0 12px; padding-top: 4px; display: flex; align-items: center; gap: 8px; }
article h3 { font: 500 19px/1.35 var(--display); letter-spacing: -.01em; margin: 30px 0 8px; }
article h4 { font: 600 15px/1.4 var(--sans); margin: 22px 0 6px; }
article p { margin: 0 0 16px; color: var(--ink); }
article ul, article ol { margin: 0 0 18px; padding-left: 24px; }
article li { margin: 6px 0; }
article li::marker { color: var(--ink-3); }
.lede { font-size: 17.5px; line-height: 1.6; color: var(--ink-2); }
code { font: 400 .88em/1 var(--mono); background: var(--soft); border-radius: 4px; padding: 2px 5px; color: #3A3F47; }
.label { display: inline-flex; align-items: center; height: 22px; padding: 0 8px; border-radius: 4px; font: 600 11px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase; vertical-align: 3px; margin-left: 8px; }
.label.scored { background: var(--good-bg); color: var(--good); }
.label.dev { background: var(--warn-bg); color: var(--warn); }
.label.draft { background: var(--draft-bg); color: var(--draft); }
.label.low { background: var(--bad-bg); color: var(--bad); }
.q { display: inline-block; font-size: 14px; color: var(--ink-2); background: var(--soft); border-radius: 12px 12px 12px 3px; padding: 4px 11px; margin: 2px 4px 2px 0; line-height: 1.5; }

/* Callouts */
aside { display: grid; grid-template-columns: 22px 1fr; gap: 12px; padding: 14px 18px; border-radius: 8px; margin: 0 0 20px; font-size: 15px; line-height: 1.6; }
aside svg { width: 20px; height: 20px; margin-top: 2px; }
aside p { margin: 0; }
aside p + p { margin-top: 8px; }
aside strong:first-child { font-weight: 600; }
aside.note { background: var(--accent-bg); }
aside.note svg { color: var(--accent); }
aside.key { background: var(--good-bg); }
aside.key svg { color: var(--good); }
aside.caution { background: var(--warn-bg); }
aside.caution svg { color: var(--warn); }
aside.draft { background: var(--draft-bg); }
aside.draft svg { color: var(--draft); }

/* Tables */
.tbl { overflow-x: auto; margin: 0 0 22px; border: 1px solid var(--line); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.5; }
th { text-align: left; font-weight: 600; background: var(--soft); color: var(--ink); padding: 10px 14px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 11px 14px; border-top: 1px solid var(--line); vertical-align: top; color: var(--ink-2); }
tr:first-child td { border-top: 0; }
td:first-child { color: var(--ink); font-weight: 500; }
tr.hl td { background: #F7FAFF; }
tr.hl td:first-child { box-shadow: inset 3px 0 0 var(--accent); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.spec td:first-child { width: 34%; color: var(--ink-3); font-weight: 400; }
.spec td { color: var(--ink); }

/* Code blocks */
.code { position: relative; margin: 0 0 22px; }
.code pre { margin: 0; background: var(--soft); border-radius: 8px; padding: 16px 92px 16px 18px; overflow-x: auto; font: 400 14px/1.75 var(--mono); color: var(--ink); }
.code pre .c { color: #7A808A; }
.code pre .k { color: var(--accent-ink); font-weight: 500; }
.code .copy { position: absolute; top: 10px; right: 10px; height: 30px; padding: 0 10px; border: 1px solid var(--line-2); background: var(--card); border-radius: 6px; font-size: 12.5px; color: var(--ink-2); display: inline-flex; align-items: center; gap: 6px; }
.code .copy:hover { color: var(--ink); border-color: var(--ink-3); }
.code .copy svg { width: 14px; height: 14px; }

/* Numbered steps */
ol.steps { list-style: none; counter-reset: s; padding: 0; margin: 4px 0 24px; }
ol.steps > li { counter-increment: s; position: relative; padding: 0 0 22px 48px; margin: 0; }
ol.steps > li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--accent-bg); color: var(--accent-ink); font: 600 14px/30px var(--sans); text-align: center; }
ol.steps > li::after { content: ""; position: absolute; left: 14.5px; top: 36px; bottom: 6px; width: 1px; background: var(--line-2); }
ol.steps > li:last-child::after { display: none; }
ol.steps > li > b { display: block; font-weight: 600; line-height: 30px; }
ol.steps > li > p { margin: 0; color: var(--ink-2); }

/* Tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin: 4px 0 24px; }
.tile { border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; display: block; color: var(--ink); background: var(--card); }
a.tile:hover { text-decoration: none; border-color: var(--accent); box-shadow: 0 4px 16px rgba(26,91,214,.08); }
.tile small { display: block; font: 600 11.5px/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 10px; }
.tile b { display: block; font: 500 17px/1.3 var(--display); margin-bottom: 6px; }
.tile p { margin: 0; color: var(--ink-2); font-size: 14.5px; line-height: 1.55; }
.tile .go { display: inline-block; margin-top: 12px; color: var(--accent); font-size: 14px; font-weight: 500; }

/* Figures */
figure { margin: 0 0 24px; border: 1px solid var(--line); border-radius: 10px; padding: 20px 22px; }
figcaption { font-size: 13px; color: var(--ink-3); margin-top: 12px; }

/* Card footer */
.cardfoot { margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--line); text-align: center; }
.cardfoot .helpful { justify-content: center; margin-bottom: 14px; font-size: 14px; }
.thanks { font-size: 13.5px; color: var(--good); margin-top: 10px; min-height: 20px; }
.pagenav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 28px; text-align: left; }
.pagenav a { border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; color: var(--ink); font-size: 15px; font-weight: 500; }
.pagenav a span { display: block; font-size: 12.5px; color: var(--ink-3); font-weight: 400; }
.pagenav a:hover { border-color: var(--accent); text-decoration: none; }
.pagenav a.next { text-align: right; grid-column: 2; }
.legal { max-width: 880px; margin: 18px auto 0; font-size: 13px; color: var(--ink-3); line-height: 1.6; }
.legal p { margin: 0 0 8px; }

/* Site footer */
.sitefoot { margin-top: 56px; border-top: 1px solid var(--line); background: var(--card); padding: 40px 40px 28px; font-size: 14px; }
.sitefoot .cols { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; max-width: 1160px; margin: 0 auto; }
.sitefoot h5 { margin: 0 0 12px; font: 600 13px/1 var(--sans); color: var(--ink); }
.sitefoot a { display: block; color: var(--ink-2); padding: 4px 0; }
.sitefoot a.brand { display: flex; color: var(--ink); padding: 0; }
.sitefoot a.brand:hover { text-decoration: none; }
.sitefoot p { margin: 12px 0 0; color: var(--ink-3); font-size: 13.5px; max-width: 300px; line-height: 1.55; }
.sitefoot .base { max-width: 1160px; margin: 32px auto 0; padding-top: 20px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--ink-3); font-size: 13px; }

/* Specimen chart */
.chartbox .head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.chartbox .who { font-size: 13.5px; color: var(--ink-3); }
.chartbox .who b { display: block; color: var(--ink); font-weight: 600; font-size: 15px; }
.chartbox .val { font: 300 44px/1 var(--display); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.chartbox .chg { font-size: 13px; font-weight: 500; margin-left: 6px; }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--line-2); border-radius: 8px; overflow: hidden; margin-bottom: 12px; }
.seg button { border: 0; background: var(--card); padding: 7px 12px; font-size: 13px; color: var(--ink-2); border-right: 1px solid var(--line); }
.seg button:last-child { border-right: 0; }
.seg button[aria-pressed="true"] { background: var(--accent-bg); color: var(--accent-ink); font-weight: 500; }
#chart { width: 100%; height: auto; display: block; }
#chart text { font: 400 11px var(--sans); fill: var(--ink-3); }

/* Loyalty calculator */
.calc { display: grid; grid-template-columns: 1fr 230px; gap: 28px; }
.calc label { display: block; font-size: 14px; color: var(--ink-2); margin-bottom: 16px; }
.calc label span { float: right; font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.calc input[type=range] { width: 100%; margin-top: 8px; accent-color: var(--accent); }
.calc .list { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }
.calc .list span { font: 500 12px/1 var(--mono); padding: 6px 7px; border-radius: 5px; background: var(--soft); color: var(--ink-3); }
.calc .list span.you { background: var(--accent); color: #fff; }
.calc .out { border-left: 1px solid var(--line); padding-left: 24px; display: grid; gap: 12px; align-content: start; }
.calc .out div { font-size: 13.5px; color: var(--ink-3); display: flex; justify-content: space-between; align-items: baseline; }
.calc .out div b { font: 400 26px/1 var(--display); color: var(--ink); font-variant-numeric: tabular-nums; }
.calc .out div.total { border-top: 1px solid var(--line); padding-top: 12px; color: var(--ink); font-weight: 500; }
.calc .out div.total b { font-size: 38px; color: var(--accent-ink); }

/* Weight bar */
.weights { display: flex; border-radius: 8px; overflow: hidden; margin: 4px 0 18px; font-size: 13px; font-weight: 500; }
.weights span { flex: 1; padding: 12px 14px; color: #fff; line-height: 1.3; }
.weights span:nth-child(1) { background: #1A5BD6; }
.weights span:nth-child(2) { background: #3C7BEA; }
.weights span:nth-child(3) { background: #6E9DF0; }

/* ---------- Responsive ---------- */
@media (max-width: 1280px) {
  .wrap { grid-template-columns: minmax(0, 880px); }
  .toc { display: none; }
  .toc-inline { display: block; }
}
@media (max-width: 1080px) {
  .tabs { display: none; }
}
@media (max-width: 900px) {
  :root { --sub: 52px; }
  .topbar { padding: 0 16px; gap: 12px; }
  .menu { display: grid; place-items: center; }
  .brand small, .home-link { display: none; }
  .search { width: auto; flex: 1; max-width: 340px; }
  .search kbd { display: none; }
  .subbar { padding: 0 16px; }
  .subbar h2 { font-size: 17px; }
  .subbar h2 b { display: none; }
  .layout { grid-template-columns: 1fr; }
  .sidenav { position: fixed; z-index: 50; top: 0; left: 0; bottom: 0; height: 100vh; width: 300px; transform: translateX(-100%); transition: transform .25s; box-shadow: 0 0 40px rgba(0,0,0,.2); padding-top: 20px; }
  body.nav-open .sidenav { transform: none; }
  .scrim { position: fixed; inset: 0; z-index: 45; background: rgba(15,18,22,.4); display: none; }
  body.nav-open .scrim { display: block; }
  main { padding: 16px 16px 0; }
  .card { padding: 22px 18px 28px; }
  .cardtop .helpful > span { display: none; }
  article h1 { font-size: 28px; }
  article h2 { font-size: 23px; margin-top: 40px; }
  .code pre { padding: 46px 16px 16px; font-size: 13px; }
  .calc { grid-template-columns: 1fr; }
  .calc .out { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 16px; }
  .weights { flex-direction: column; }
  .sitefoot { padding: 32px 16px 24px; }
  .sitefoot .cols { grid-template-columns: 1fr 1fr; }
  .sitefoot .cols > div:first-child { grid-column: 1 / -1; }
  .pagenav { grid-template-columns: 1fr; }
  .pagenav a.next { grid-column: 1; }
}
@media (max-width: 520px) {
  .subbar .btn { padding: 0 12px; font-size: 13px; }
}

.search input::-webkit-search-cancel-button { display: none; }