/* ==========================================================================
   CBOM Profiles — methodology documentation
   Aligned to the CBOM Reference Register design system:
   PKIC-adjacent navy + blue, warm paper background.
   Type: Fraunces (display) · Inter (UI/body) · JetBrains Mono (code)
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@500&display=swap');

:root{
  /* ink & neutrals — matched to the main site */
  --ink:#0f1b2d; --body:#29323d; --muted:#5f6b7a; --faint:#8a94a1;
  --line:#e4e8ee; --line-soft:#eef1f5;

  /* surfaces */
  --bg:#f7f9fc; --panel:#ffffff; --panel2:#f2f5fa; --navy:#0f1b2d;

  /* brand */
  --accent:#1c5fd6; --accent-ink:#16409a; --accent-soft:#eaf1fe;

  /* status — matched to the register's status colours */
  --pass:#0f7a52; --fail:#b02a2a; --warn:#9a6300;

  /* interface-type accents used by diagrams and the demo */
  --svc:#0369a1; --mgmt:#6d28d9;

  --font-ui:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-display:"Fraunces",Georgia,"Times New Roman",serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --radius:10px; --radius-lg:16px;
  --shadow:0 1px 2px rgba(15,27,45,.06),0 1px 3px rgba(15,27,45,.04);
  --shadow-md:0 4px 14px rgba(15,27,45,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--body);
  font-family:var(--font-ui);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* header: brand row returning to the working group site, then section tabs */
header.site{background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.hbar{max-width:1080px;margin:0 auto;padding:12px 24px 0;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{font-family:var(--mono);font-weight:500;font-size:13px;letter-spacing:.04em;
  color:#fff;background:var(--navy);padding:5px 8px;border-radius:6px}
.brand-text{font-family:var(--font-display);font-weight:600;font-size:17px;color:var(--ink)}
.hsep{color:var(--faint);font-size:15px}
.hsection{font-family:var(--font-display);font-weight:600;font-size:16px;color:var(--muted)}
.hback{margin-left:auto;font-size:13.5px;color:var(--muted)}
.hback:hover{color:var(--accent)}

/* Legacy flat tab bar. Retained so that any page not yet converted to the
   shared navigation include still renders. Remove once none remain. */
nav.tabs{display:flex;flex-wrap:wrap;gap:4px;max-width:1080px;margin:8px auto 0;padding:0 18px}
nav.tabs a{font-size:14px;color:var(--muted);font-weight:500;padding:9px 11px;
  border-radius:8px 8px 0 0;border-bottom:2px solid transparent;line-height:1}
nav.tabs a:hover{background:var(--line-soft);text-decoration:none;color:var(--ink)}
nav.tabs a.active{color:var(--accent-ink);border-bottom-color:var(--accent);font-weight:600}

/* section navigation
   Twenty sections presented as a flat tab bar exceeded what a reader can scan,
   and wrapped to several rows on narrow screens. Grouped instead: a sticky left
   rail where there is room, and a grouped block above the content where there
   is not. Rendered from _data/methodology_nav.yml. */
.shell{max-width:1080px;margin:0 auto}
.sidenav{padding:14px 24px 0}
.sidenav-group{font:600 10.5px/1 var(--mono);letter-spacing:.09em;text-transform:uppercase;
  color:var(--faint);margin:14px 0 7px}
.sidenav-group:first-child{margin-top:4px}
.sidenav ul{list-style:none;margin:0 0 4px;padding:0;display:flex;flex-wrap:wrap;gap:4px}
.sidenav a{display:block;font-size:14px;color:var(--muted);font-weight:500;
  padding:7px 10px;border-radius:7px;line-height:1.25}
.sidenav a:hover{background:var(--line-soft);color:var(--ink);text-decoration:none}
.sidenav a.active{background:var(--accent-soft);color:var(--accent-ink);font-weight:600}

@media (min-width:1100px){
  .shell{max-width:1320px;display:flex;align-items:flex-start;gap:10px;padding:0 12px}
  .sidenav{flex:0 0 208px;position:sticky;top:70px;padding:20px 4px 24px 12px;
    max-height:calc(100vh - 88px);overflow-y:auto}
  .sidenav ul{display:block}
  /* The rail carries six groups and twenty-one entries. At the earlier rhythm
     the last group fell below the fold on a 900px viewport and had to be
     scrolled for, which made Reference easy to miss. */
  .sidenav .sidenav-group{margin:11px 0 5px}
  .sidenav a{padding:5px 10px}
  .sidenav a{border-left:2px solid transparent;border-radius:0 7px 7px 0}
  .sidenav a.active{border-left-color:var(--accent)}
  .shell main{flex:1 1 auto;min-width:0;max-width:1000px;margin:0}
}

/* content */
main{max-width:1080px;margin:0 auto;padding:32px 24px 96px}
h1,h2,h3{color:var(--ink);font-family:var(--font-display);font-weight:600;letter-spacing:-.01em}
h1{font-size:32px;margin:0 0 10px}
h2{font-size:23px;margin:46px 0 10px}
h3{font-size:17px;margin:28px 0 8px}
p{color:var(--body);max-width:74ch}
.lead{color:var(--muted);font-size:17px;max-width:74ch}
.crumb{color:var(--faint);font-size:12px;font-family:var(--mono);letter-spacing:.06em;margin-bottom:6px}

.tag{display:inline-block;font:500 11.5px/1 var(--mono);padding:6px 10px;border-radius:20px;
  background:var(--panel2);border:1px solid var(--line);color:var(--muted);margin:2px 4px 2px 0}

.banner{background:var(--accent-soft);border:1px solid #cfe0fb;border-left:4px solid var(--accent);
  border-radius:var(--radius);padding:13px 17px;margin:20px 0;color:#1b3a6b;font-size:14.5px}
.banner.warn{background:#fdf6e9;border-color:#f0e0bd;border-left-color:var(--warn);color:#6b4a0d}
.banner.good{background:#eaf6f1;border-color:#c6e6d8;border-left-color:var(--pass);color:#0c5236}
.banner.bad{background:#fbeceb;border-color:#f2cfcd;border-left-color:var(--fail);color:#7a1f1f}

figure{margin:24px 0;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:18px 18px 12px;box-shadow:var(--shadow)}
figure svg{display:block;width:100%;height:auto}
figcaption{color:var(--muted);font-size:13.5px;margin-top:12px;padding:0 4px}

code{font-family:var(--mono);font-size:.85em;color:var(--accent-ink);
  background:var(--panel2);border:1px solid var(--line);border-radius:5px;padding:1px 5px}
pre{background:var(--panel2);border:1px solid var(--line);border-radius:var(--radius);
  padding:15px;overflow:auto;font-family:var(--mono);font-size:12.5px;line-height:1.55}
pre code{background:none;border:none;padding:0;color:var(--body)}

table{width:100%;border-collapse:collapse;font-size:13.5px;margin:14px 0;
  background:var(--panel);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:var(--panel2);color:var(--ink);font-weight:600}
td code{font-size:11.5px}
.na{color:var(--warn);font-size:12px}

ul{padding-left:20px}
li{margin:7px 0;color:var(--body)}

.must{color:var(--pass);font-weight:600;font-family:var(--mono);font-size:12px}
.pass{color:var(--pass);font-weight:600;font-family:var(--mono);font-size:12px}
.fail{color:var(--fail);font-weight:700;font-family:var(--mono);font-size:12px}
.should{color:var(--warn);font-weight:600;font-family:var(--mono);font-size:12px}
.may{color:var(--muted);font-weight:600;font-family:var(--mono);font-size:12px}

/* card grid on the section index */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:20px}
.card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:20px;box-shadow:var(--shadow);color:inherit;transition:border-color .15s,box-shadow .15s}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);text-decoration:none}
.card h3{margin:0 0 6px;color:var(--accent-ink);font-size:17px}
.card p{margin:0;color:var(--muted);font-size:14px}
.card .num{font:500 11.5px/1 var(--mono);color:var(--faint);letter-spacing:.05em}

/* a to-fill-in block on the use case template */
.fill{background:var(--panel2);border:1px dashed #c3ccd9;border-radius:var(--radius);
  padding:12px 17px;margin:18px 0}
.fill p,.fill li{color:var(--muted);font-size:14px}
.fill p{margin:7px 0}
.fill>:first-child+p{margin-top:0}
.fill-label{display:block;font:500 11px/1 var(--mono);letter-spacing:.08em;
  text-transform:uppercase;color:var(--faint);margin-bottom:8px}
.fill table{margin:10px 0}

.pagenav{display:flex;justify-content:space-between;gap:12px;margin-top:48px;padding-top:20px;border-top:1px solid var(--line)}
.pagenav a{font-size:14px}
.pagenav .next{margin-left:auto;text-align:right}

.foot{margin-top:42px;padding-top:20px;border-top:1px solid var(--line);color:var(--faint);font-size:13px}

@media(max-width:760px){
  nav.tabs{overflow-x:auto;flex-wrap:nowrap}
  main{padding:24px 18px 72px}
  .hback{margin-left:0;width:100%}
}