/* UND Assay base layout · © Universal Network Development LLC (UND Industries). All rights reserved. */
* { box-sizing: border-box; }
/* `hidden` must win over any display rule (a .authform {display:grid} showed both login forms, 2026-10-03). */
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
html, body { margin: 0; }
body {
  background: var(--bg-0); color: var(--text); overflow-x: hidden; min-height: 100vh;
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
}
[data-theme="ember"] body {
  background: radial-gradient(1100px 700px at 10% -10%, rgba(155,18,38,.22), transparent 60%),
              radial-gradient(900px 600px at 100% 0%, rgba(255,106,26,.08), transparent 60%), var(--bg-0);
  background-attachment: fixed;
}
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 8px;
}
img { max-width: 100%; display: block; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
svg.i { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.page { padding-top: 24px; padding-bottom: 96px; }   /* top/bottom only: the side gutter comes from .wrap (was zeroed site-wide, found 2026-10-03) */

/* ---------- glass surface (Sovereign recipe, Ember) / flat card (light) ---------- */
.glass {
  background: linear-gradient(135deg, var(--glass-1) 0%, var(--glass-2) 30%, var(--glass-3) 60%, var(--glass-4) 100%);
  backdrop-filter: blur(24px) saturate(170%); -webkit-backdrop-filter: blur(24px) saturate(170%);
  border: 1px solid var(--rim); border-top-color: var(--rim-top); border-bottom-color: var(--rim-bot);
  box-shadow: inset 0 1.5px 2px 0 var(--spec), inset 0 -1.5px 2px 0 rgba(0,0,0,.45), var(--shadow);
  border-radius: 18px;
}
[data-theme="light"] .glass { backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: var(--shadow); }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; }
.site-header .bar {
  max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 18px; padding: 10px 16px;
}
.site-header.solid { background: color-mix(in srgb, var(--bg-0) 82%, transparent); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); }
.site-header.over-hero { position: absolute; left: 0; right: 0; }
.burger, .icon-btn { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 999px; color: var(--text-2); background: none; border: 0; cursor: pointer; }
.over-hero .burger, .over-hero .icon-btn { color: #f6efe9; }
.burger:hover, .icon-btn:hover { color: var(--text); background: var(--surface-3); }
.logo { font-weight: 850; font-size: 22px; letter-spacing: .02em; display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.over-hero .logo { color: #fff; }
.logo i { width: 8px; height: 8px; border-radius: 2px; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.logo .logo-product { font-weight: 600; letter-spacing: .01em; color: var(--text-2); }   /* product name beside the UND mark */
.over-hero .logo .logo-product { color: rgba(255,255,255,.82); }
[data-theme="light"] .over-hero .logo i { background: #fff; box-shadow: none; }
.nav-links { display: flex; gap: 2px; }
.nav-links a { font-size: 14px; color: var(--text-2); padding: 7px 12px; border-radius: 999px; }
.over-hero .nav-links a { color: rgba(255,255,255,.78); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); background: var(--surface-3); }
.over-hero .nav-links a:hover, .over-hero .nav-links a[aria-current="page"] { color: #fff; background: rgba(255,255,255,.1); }
.nav-r { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.theme-btn { padding: 7px 12px; border-radius: 999px; font: 600 12.5px/1 inherit; color: var(--text); cursor: pointer; border: 1px solid var(--line-2);
  background: var(--surface-2); display: inline-flex; gap: 7px; align-items: center; white-space: nowrap; font-family: inherit; }
.over-hero .theme-btn { color: #fff; border-color: rgba(255,255,255,.25); background: rgba(0,0,0,.3); }
.theme-btn i { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); }
[data-theme="light"] .theme-btn i { background: conic-gradient(#000 0 50%, #fff 0); border: 1px solid #000; }

/* ---------- mobile bottom nav ---------- */
.bottom-nav { display: none; }
@media (max-width: 760px) {
  .nav-links, .hide-sm { display: none !important; }
  .bottom-nav { display: grid; grid-template-columns: repeat(5, 1fr); position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    background: color-mix(in srgb, var(--surface-solid) 92%, transparent); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--line); padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); }
  .bottom-nav a { display: grid; justify-items: center; gap: 2px; font-size: 11px; color: var(--text-3); padding: 4px 0; }
  .bottom-nav a[aria-current="page"] { color: var(--accent); }
  [data-theme="light"] .bottom-nav a[aria-current="page"] { color: var(--text); font-weight: 700; }
  .page { padding-bottom: 110px; }
}

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 48px; padding: 28px 0 40px; color: var(--text-3); font-size: 13px; }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; justify-content: space-between; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.site-footer a:hover { color: var(--text); }
.data-note { font-size: 12px; color: var(--text-3); }