/* AIGSB.org - site styles. ASCII only. */
:root {
  --navy: #0A2557;
  --navy-2: #0E3473;
  --navy-3: #0B5FB0;
  --gold: #C9962E;
  --gold-2: #E2BC6A;
  --azure: #1EA7E8;
  --gold-soft: #F6EEDC;
  --ink: #1A2433;
  --muted: #55606E;
  --line: #DDE2E8;
  --bg: #FFFFFF;
  --bg-alt: #F3F5F8;
  --ok: #2E7D5B;
  --warn: #9A5B00;
  --err: #B42318;
  --radius: 10px;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Public Sans", "Segoe UI", Arial, sans-serif;
  --mono: "IBM Plex Mono", Consolas, "Courier New", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--bg); font-size: 17px; line-height: 1.6; }
img, svg { max-width: 100%; }
a { color: var(--navy-3); text-underline-offset: 3px; }
a:hover { color: var(--gold); }
h1, h2, h3, h4 { font-family: var(--serif); color: var(--navy); line-height: 1.2; margin: 0 0 .5em; font-weight: 600; }
h1 { font-size: clamp(2.1rem, 4.2vw, 3.3rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 2.8vw, 2.2rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; font-family: var(--sans); }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.3em; margin: 0 0 1em; }
li { margin-bottom: .35em; }
code, .mono { font-family: var(--mono); font-size: .92em; }
.container { width: min(1160px, 100% - 40px); margin: 0 auto; }
.narrow { width: min(820px, 100% - 40px); margin: 0 auto; }
.eyebrow { font-family: var(--mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); font-weight: 500; margin-bottom: .8em; display: block; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 46em; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 12px; z-index: 99; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: #FFFFFF; border-bottom: 1px solid var(--line); }
.site-header .bar { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--navy); }
.brand img { width: 44px; height: 44px; }
.brand .wm { display: flex; flex-direction: column; line-height: 1.1; }
.brand .wm b { font-family: var(--serif); font-size: 1.35rem; letter-spacing: .06em; }
.brand .wm span { white-space: nowrap; font-size: .72rem; color: var(--muted); letter-spacing: .04em; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { text-decoration: none; color: var(--ink); font-size: .93rem; padding: 8px 11px; border-radius: 6px; }
.nav a:hover, .nav a.active { color: var(--navy); background: var(--bg-alt); }
.nav a.active { box-shadow: inset 0 -2px 0 var(--gold); border-radius: 6px 6px 0 0; }
.nav .btn { margin-left: 8px; }
.nav a { white-space: nowrap; }
.nav a.btn-primary, .nav a.btn-primary:hover { color: #fff; background: var(--navy); box-shadow: none; }
.nav a.btn-primary:hover { background: var(--navy-3); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; font: inherit; cursor: pointer; }
@media (max-width: 1140px) {
  .nav-toggle { display: inline-block; }
  .nav { display: none; position: absolute; top: 74px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 12px 20px 20px; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav .btn { margin: 8px 0 0; text-align: center; }
}

/* Buttons */
.btn { display: inline-block; font: 600 .95rem var(--sans); padding: 12px 20px; border-radius: 8px; text-decoration: none; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-3); color: #fff; }
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: #A87B22; color: #fff; }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--navy); color: var(--navy); }
.btn-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn-light:hover { border-color: #fff; color: #fff; }
.btn[disabled] { opacity: .6; cursor: wait; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.4em; }

/* Hero */
.hero { background: var(--navy); color: #E8EDF4; padding: 84px 0 76px; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 82% 28%, rgba(30,167,232,.22), transparent 50%), radial-gradient(circle at 70% 85%, rgba(201,150,46,.16), transparent 50%); pointer-events: none; }
.hero .container { position: relative; z-index: 1; }
.hero h1 { color: #fff; }
.hero .lead { color: #B9C6D6; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.page-hero { background: linear-gradient(120deg, var(--navy) 55%, var(--navy-2)); color: #E8EDF4; padding: 64px 0 54px; }
.page-hero h1 { color: #fff; margin-bottom: .3em; }
.page-hero .lead { color: #B9C6D6; }
.crumbs { font-size: .85rem; color: #93A4BA; margin-bottom: 14px; }
.crumbs a { color: #C9D4E2; }

/* Sections */
.section { padding: 76px 0; }
.section.alt { background: var(--bg-alt); }
.section.tight { padding: 48px 0; }
.section-head { max-width: 760px; margin-bottom: 36px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 860px) {
  .hero-grid, .split, .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { padding: 56px 0; }
}

/* Cards */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.card h3 { margin-bottom: .4em; }
.card .code { font-family: var(--mono); font-size: .8rem; color: var(--gold); letter-spacing: .08em; }
a.card { display: block; text-decoration: none; color: inherit; transition: border-color .15s, box-shadow .15s; }
a.card:hover { border-color: var(--navy-3); box-shadow: 0 6px 24px rgba(11,31,58,.08); color: inherit; }
.card .more { color: var(--navy-3); font-weight: 600; font-size: .92rem; }
.icon-chip { width: 44px; height: 44px; border-radius: 10px; background: var(--gold-soft); display: grid; place-items: center; margin-bottom: 14px; }
.icon-chip svg { width: 24px; height: 24px; stroke: var(--navy); fill: none; stroke-width: 1.8; }
.stat { font-family: var(--serif); font-size: 2.6rem; color: var(--navy); line-height: 1; margin-bottom: .2em; }

/* Callouts and pills */
.callout { border: 1px solid var(--gold-2); background: var(--gold-soft); border-radius: var(--radius); padding: 20px 24px; }
.callout.navy { background: var(--navy); border-color: var(--navy); color: #DCE4EE; }
.callout.navy h3, .callout.navy strong { color: #fff; }
.pill { display: inline-block; font: 600 .74rem var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; background: var(--bg-alt); color: var(--navy); border: 1px solid var(--line); }
.pill.draft { background: var(--gold-soft); border-color: var(--gold-2); color: #7A5714; }
.pill.dev { background: #E9EEF5; color: var(--navy-3); }
.pill.ok { background: #E6F2EC; color: var(--ok); border-color: #B9DCC9; }
.pill.warn { background: #FFF4E5; color: var(--warn); border-color: #F3D2A2; }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; background: #fff; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-alt); font-weight: 600; color: var(--navy); font-size: .88rem; }
tr:last-child td { border-bottom: none; }

/* Figures / diagrams */
figure.diagram { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
figure.diagram.dark { background: transparent; border: none; padding: 0; }
figure.diagram svg { display: block; width: 100%; height: auto; }
figure.diagram figcaption { font-size: .88rem; color: var(--muted); margin-top: 12px; }
svg text { font-family: var(--sans); }

/* Steps */
.steps { counter-reset: step; list-style: none; padding: 0; }
.steps li { counter-increment: step; position: relative; padding: 0 0 22px 58px; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 38px; height: 38px; border-radius: 50%; background: var(--navy); color: #fff; display: grid; place-items: center; font-weight: 700; }
.steps li h4 { margin-bottom: .25em; }

/* Document layout (standards) */
.doc { display: grid; grid-template-columns: 250px 1fr; gap: 48px; }
.doc .toc { position: sticky; top: 100px; align-self: start; font-size: .9rem; border-left: 2px solid var(--line); padding-left: 16px; }
.doc .toc a { display: block; text-decoration: none; color: var(--muted); padding: 5px 0; }
.doc .toc a:hover { color: var(--navy); }
.doc article h2 { margin-top: 1.6em; padding-top: .4em; border-top: 1px solid var(--line); }
.doc article h2:first-child { margin-top: 0; border-top: none; }
.req { border-left: 3px solid var(--gold); background: #FBFAF6; padding: 12px 16px; margin: 0 0 12px; border-radius: 0 8px 8px 0; }
.req b.id { font-family: var(--mono); color: var(--navy); margin-right: 8px; }
.meta-box { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; background: var(--bg-alt); margin-bottom: 28px; font-size: .93rem; }
.meta-box dl { display: grid; grid-template-columns: 170px 1fr; gap: 6px 14px; margin: 0; }
.meta-box dt { color: var(--muted); }
.meta-box dd { margin: 0; font-weight: 500; }
@media (max-width: 860px) { .doc { grid-template-columns: 1fr; } .doc .toc { position: static; } .meta-box dl { grid-template-columns: 1fr; } }

/* Forms */
form .field { margin-bottom: 18px; }
label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; color: var(--navy); }
input[type=text], input[type=email], input[type=password], input[type=url], select, textarea {
  width: 100%; font: inherit; padding: 11px 13px; border: 1px solid #C5CDD8; border-radius: 8px; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--gold-2); outline-offset: 1px; border-color: var(--gold); }
textarea { min-height: 140px; resize: vertical; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: var(--ink); }
.check input { margin-top: 5px; }
.hint { font-size: .85rem; color: var(--muted); margin-top: 4px; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.notice { padding: 14px 16px; border-radius: 8px; margin: 14px 0; font-size: .95rem; display: none; }
.notice.show { display: block; }
.notice.ok { background: #E6F2EC; color: #1F5B41; border: 1px solid #B9DCC9; }
.notice.err { background: #FDECEA; color: var(--err); border: 1px solid #F5C2BC; }
.notice.info { background: #E9EEF5; color: var(--navy); border: 1px solid #C9D5E6; }

/* Member area */
.idea { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; background: #fff; display: grid; grid-template-columns: 64px 1fr; gap: 16px; margin-bottom: 14px; }
.vote { text-align: center; }
.vote button { width: 52px; border: 1px solid var(--line); background: var(--bg-alt); border-radius: 8px; padding: 6px 0; cursor: pointer; font: 600 1rem var(--sans); color: var(--navy); }
.vote button.on { background: var(--gold-soft); border-color: var(--gold); }
.idea h3 { margin-bottom: .2em; font-size: 1.15rem; }
.idea h3 a { text-decoration: none; color: var(--navy); }
.idea .by { font-size: .85rem; color: var(--muted); }
.comment { border-top: 1px solid var(--line); padding: 14px 0; }
.member-card { display: flex; gap: 14px; align-items: flex-start; }
.avatar { width: 48px; height: 48px; border-radius: 50%; background: var(--navy); color: #fff; display: grid; place-items: center; font-weight: 700; flex: none; }
.gate { text-align: center; padding: 48px 24px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.toolbar select { width: auto; }

/* FAQ */
details { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 12px; background: #fff; }
details summary { cursor: pointer; font-weight: 600; color: var(--navy); }
details[open] summary { margin-bottom: 10px; }

/* Glossary */
dl.glossary dt { font-family: var(--serif); font-weight: 600; color: var(--navy); font-size: 1.1rem; margin-top: 18px; }
dl.glossary dd { margin: 4px 0 0; color: var(--ink); }

/* Footer */
.site-footer { background: var(--navy); color: #B9C6D6; padding: 60px 0 30px; font-size: .92rem; }
.site-footer a { color: #DCE4EE; text-decoration: none; }
.site-footer a:hover { color: var(--gold-2); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h4 { color: #fff; font-size: .9rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 12px; }
.footer-grid ul { list-style: none; padding: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 20px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: .82rem; color: #8FA0B6; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

/* Brand accent: azure-to-gold rule under the header, echoing the logo arcs */
.site-header { border-bottom: 0 !important; box-shadow: 0 1px 0 var(--line); }
.site-header::after { content: ""; display: block; height: 3px; background: linear-gradient(90deg, var(--azure), var(--navy-3) 45%, var(--gold)); }