/* AutoSOA marketing site: tokens, buttons, header and footer.
   Loaded by every page (index.html, guide.html, walkthroughs.html). Homepage sections live in
   site.css. Static, no build step: bump the ?v= on the <link> when this file changes. */

:root{
  /* ink and surfaces */
  --navy-950:#0a1328; --navy-900:#0f1b36; --navy-800:#1a2747; --navy-700:#2a3a63;
  --ink:#0f1729; --ink-2:#33405b; --muted:#56627d; --faint:#8a94ab;
  --bg:#ffffff; --bg-soft:#f6f8fc; --bg-tint:#f1f3fb; --line:#e3e8f2; --line-2:#cfd7e6;

  /* the one accent: AutoSOA indigo, kept from the original mark */
  --brand:#4f46e5; --brand-hover:#4338ca; --brand-ink:#3730a3; --brand-soft:#eef0fe; --brand-line:#c9cdfa;

  /* status */
  --ok:#146c36; --ok-soft:#e8f6ed;
  --early:#9a4b06; --early-soft:#fdf1e2;
  --planned:#475569; --planned-soft:#eef1f5;
  --danger:#b42318;

  /* chart roles (validated: categorical indigo/orange, 5-step indigo ordinal ramp) */
  --series-1:#4f46e5; --series-2:#eb6834;
  --age-1:#98a6fa; --age-2:#7c83f5; --age-3:#5b5ef0; --age-4:#4338ca; --age-5:#2e2a7a;

  --radius-sm:8px; --radius:12px; --radius-lg:18px;
  --shadow-sm:0 1px 2px rgba(15,23,41,.05);
  --shadow:0 1px 2px rgba(15,23,41,.04),0 10px 28px rgba(15,23,41,.07);
  --shadow-lg:0 2px 4px rgba(15,23,41,.04),0 24px 56px rgba(15,23,41,.12);
  --maxw:1200px; --gutter:24px; --header-h:68px;
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --focus:0 0 0 3px #fff,0 0 0 5px var(--brand);
}
@media (max-width:480px){ :root{ --gutter:16px; } }

.i{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none;vertical-align:middle}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px;font-weight:600}
.skip:focus{top:12px}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:6px}
.sh,.sh-panel,.sf{font-family:var(--font);line-height:1.6}
.sh ul,.sh-panel ul,.sf ul{margin:0;padding:0;list-style:none}
.sh p,.sh-panel p,.sf p{margin:0}
.sh button{font:inherit;color:inherit}
.sf h2{line-height:1.2;letter-spacing:0;margin:0}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;border-radius:10px;padding:10px 20px;font-weight:600;font-size:15px;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,color .15s ease,box-shadow .15s ease;white-space:nowrap;text-align:center}
.btn svg{flex:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(55,48,163,.3)}
.btn-primary:hover{background:var(--brand-hover)}
.btn-secondary{background:#fff;color:var(--ink);border-color:var(--line-2)}
.btn-secondary:hover{border-color:var(--ink-2);background:var(--bg-soft)}
.btn-quiet{background:transparent;color:var(--ink-2)}
.btn-quiet:hover{color:var(--ink);background:var(--bg-soft)}
.btn-on-dark{background:#fff;color:var(--navy-950)}
.btn-on-dark:hover{background:var(--brand-soft)}
.btn-outline-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-outline-dark:hover{background:rgba(255,255,255,.08);border-color:#fff}
.btn-lg{min-height:50px;padding:12px 24px;font-size:16px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);font-size:15px}
.link-arrow:hover{color:var(--brand-ink);text-decoration:underline;text-underline-offset:3px}

/* ---------- site header ---------- */
/* Solid on purpose: a backdrop-filter here stops Chrome painting the Resources menu that hangs below it. */
.sh{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.sh-inner{display:flex;align-items:center;gap:24px;height:var(--header-h)}
.lockup{display:inline-flex;align-items:center;gap:10px;min-width:0;flex:none}
.lockup-mark{width:34px;height:34px;flex:none}
.lockup-text{display:flex;flex-direction:column;min-width:0}
.lockup-name{font-weight:800;font-size:19px;letter-spacing:-.02em;line-height:1.1;color:var(--ink)}
.lockup-desc{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.01em;line-height:1.25}
.sh-nav{margin-left:auto}
.sh-links{display:flex;align-items:center;gap:4px;list-style:none}
.sh-links > li{position:relative}
.sh-links a,.sh-menu-btn{display:inline-flex;align-items:center;gap:4px;padding:8px 12px;border-radius:8px;font-weight:500;font-size:15px;color:var(--ink-2);background:none;border:0;cursor:pointer}
.sh-links a:hover,.sh-menu-btn:hover,.sh-menu-btn[aria-expanded="true"]{color:var(--ink);background:var(--bg-soft)}
.sh-links a[aria-current="page"]{color:var(--brand)}
.sh-menu-btn svg{transition:transform .15s ease}
.sh-menu-btn[aria-expanded="true"] svg{transform:rotate(180deg)}
.sh-menu{position:absolute;top:calc(100% + 8px);left:-8px;min-width:300px;list-style:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:8px}
.sh-menu a{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 12px;width:100%}
.sh-menu a strong{font-weight:600;color:var(--ink);font-size:15px}
.sh-menu a span{font-size:13px;color:var(--muted)}
.sh-actions{display:flex;align-items:center;gap:8px;flex:none}
.sh-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;align-items:center;justify-content:center}
.sh-toggle .bar-x{display:none}
.sh-toggle[aria-expanded="true"] .bar-x{display:block}
.sh-toggle[aria-expanded="true"] .bar-m{display:none}
.sh-panel{border-top:1px solid var(--line);background:#fff;max-height:calc(100vh - var(--header-h));overflow-y:auto}
.sh-panel .wrap{padding-top:12px;padding-bottom:20px}
.sh-panel ul{list-style:none}
.sh-panel li a{display:flex;align-items:center;min-height:48px;padding:0 4px;font-weight:600;font-size:17px;border-bottom:1px solid var(--line)}
.sh-panel .sub{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:18px 4px 4px}
.sh-panel-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}
@media (max-width:1099px){
  .sh-nav,.sh-signin{display:none}
  .sh-toggle{display:inline-flex}
  .sh-actions{margin-left:auto}
}
@media (max-width:560px){
  .sh-actions .btn-primary{display:none}
  .lockup-desc{max-width:170px}
}
@media (min-width:1100px){ .sh-panel{display:none !important} }

/* ---------- footer ---------- */
.sf{background:var(--bg-soft);border-top:1px solid var(--line);padding:56px 0 32px;font-size:14px;color:var(--muted)}
.sf-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(4,minmax(0,1fr));gap:32px}
.sf-brand p{margin-top:14px;max-width:340px;color:var(--ink-2)}
.sf-brand .tagline{margin-top:10px;font-weight:600;color:var(--ink)}
.sf h2{font-size:13px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--ink);margin-bottom:12px}
.sf ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.sf a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.sf-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:40px;padding-top:20px;border-top:1px solid var(--line)}
@media (max-width:960px){ .sf-grid{grid-template-columns:repeat(2,minmax(0,1fr))} .sf-brand{grid-column:1 / -1} }