/* ============================================================
   Precepta AI — Sovereign Perimeter design system (light)
   Clean enterprise light ground, governed-blue + attested-teal,
   monospace for proof/technical marks, a boundary motif.
   Code blocks stay dark on purpose (developer-standard contrast).
   ============================================================ */
:root{
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  --bg:      #ffffff;
  --bg2:     #f5f8fc;   /* cool light surface (slight blue bias) */
  --surface: #ffffff;
  --surface2:#f7f9fd;
  --text:    #0b1220;   /* ink */
  --muted:   #55637a;   /* slate */
  --faint:   #8a97ad;   /* light slate */
  --line:    #e6ebf3;
  --line2:   #d6ddea;
  --blue:    #2563eb;   /* matches the brand royal blue on white */
  --blue-d:  #1d4ed8;
  --teal:    #0f9a90;   /* attested-teal, deepened for light contrast */
  --danger:  #dc2626;
  --maxw:    1140px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:
    radial-gradient(1100px 560px at 82% -10%, rgba(37,99,235,.06), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; }
::selection{ background:rgba(37,99,235,.16); }
:focus-visible{ outline:2px solid var(--blue); outline-offset:2px; border-radius:4px; }
@media (prefers-reduced-motion: reduce){ *{ animation:none !important; transition:none !important; } html{ scroll-behavior:auto; } }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 28px; }
.mono{ font-family:var(--mono); }

/* ---------------- entrance ---------------- */
@keyframes rise{ from{opacity:0; transform:translateY(14px);} to{opacity:1; transform:translateY(0);} }
.rise{ animation:rise .6s cubic-bezier(.2,.7,.3,1) both; }
.rise.d1{ animation-delay:.07s; } .rise.d2{ animation-delay:.14s; } .rise.d3{ animation-delay:.21s; }

/* ---------------- nav ---------------- */
.nav{
  position:sticky; top:0; z-index:40;
  backdrop-filter:saturate(160%) blur(10px);
  background:rgba(255,255,255,.82); border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,24,40,.03);
}
.nav .inner{ display:flex; align-items:center; gap:28px; height:66px; }
/* Brand: the real Precepta AI logo, shown at presence size on the light ground. */
.brand{ display:inline-flex; align-items:center; }
.brand .logo{ height:32px; width:auto; display:block; }
.brand.lg .logo{ height:36px; }
.visually-hidden{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0; }
.nav .links{ display:flex; gap:24px; margin-left:auto; color:var(--muted); font-size:14px; }
.nav .links a:hover{ color:var(--text); }
.nav .actions{ display:flex; align-items:center; gap:14px; }
.nav .signin{ font-size:14px; font-weight:600; color:var(--text); }

/* ---------------- buttons ---------------- */
.btn{ display:inline-flex; align-items:center; gap:9px; font-size:14.5px; font-weight:650; padding:11px 19px; border-radius:9px; cursor:pointer; border:1px solid transparent; transition:background .15s, border-color .15s, transform .15s, box-shadow .15s; }
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--blue); color:#fff; border-color:var(--blue); box-shadow:0 1px 2px rgba(37,99,235,.25); }
.btn-primary:hover{ background:var(--blue-d); border-color:var(--blue-d); }
.btn-ghost{ background:#fff; color:var(--text); border-color:var(--line2); }
.btn-ghost:hover{ border-color:#b9c4d6; background:var(--bg2); }
.btn-sm{ padding:8px 15px; font-size:13px; }
.g-ico{ width:18px; height:18px; border-radius:50%; background:#fff; display:inline-grid; place-items:center; font-family:var(--mono); font-weight:800; font-size:11px; color:#4285F4; }

/* ---------------- headings / eyebrows ---------------- */
.eyebrow{ font-family:var(--mono); font-size:11.5px; letter-spacing:.18em; text-transform:uppercase; color:var(--teal); display:inline-flex; align-items:center; gap:9px; }
.eyebrow::before{ content:""; width:22px; height:1px; background:var(--teal); }
.kick{ font-family:var(--mono); font-size:11.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--blue); }
h1,h2,h3{ letter-spacing:-.02em; text-wrap:balance; margin:0; color:var(--text); }
.h1{ font-size:clamp(38px,5.2vw,62px); line-height:1.02; font-weight:800; }
.h2{ font-size:clamp(27px,3.6vw,38px); font-weight:750; }
.grad{ background:linear-gradient(100deg,var(--blue),var(--teal)); -webkit-background-clip:text; background-clip:text; color:transparent; }
.lead{ color:var(--muted); font-size:17.5px; }
.section{ padding:76px 0; }
.section-t{ padding-top:24px; }

/* ---------------- hero ---------------- */
.hero{ display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center; padding:64px 0 44px; }
.hero .sub{ color:var(--muted); font-size:17.5px; max-width:31em; margin:22px 0 0; }
.hero .cta-row{ display:flex; gap:13px; margin-top:32px; flex-wrap:wrap; }
.hero .fine{ margin-top:16px; font-size:12.5px; color:var(--faint); }

/* boundary diagram */
.boundary{ position:relative; border:1.5px dashed var(--line2); border-radius:16px; padding:20px; background:linear-gradient(180deg,rgba(15,154,144,.05),var(--surface2)); box-shadow:0 20px 50px -30px rgba(16,24,40,.25); }
.boundary::after{ content:"YOUR BOUNDARY"; position:absolute; top:-9px; left:18px; padding:0 8px; background:var(--bg); font-family:var(--mono); font-size:10px; letter-spacing:.16em; color:var(--teal); }
.b-chip{ display:flex; align-items:center; justify-content:space-between; gap:10px; padding:12px 14px; border:1px solid var(--line); border-radius:10px; background:#fff; font-size:13.5px; box-shadow:0 1px 2px rgba(16,24,40,.04); }
.b-chip + .b-chip{ margin-top:9px; }
.b-chip .nm{ font-weight:600; }
.b-chip .tag{ font-family:var(--mono); font-size:10.5px; color:var(--teal); border:1px solid rgba(15,154,144,.3); border-radius:20px; padding:2px 9px; white-space:nowrap; background:rgba(15,154,144,.06); }
.b-egress{ margin-top:14px; display:flex; align-items:center; gap:12px; padding:11px 14px; border:1px solid rgba(220,38,38,.24); border-radius:10px; background:rgba(220,38,38,.05); }
.b-egress .x{ width:22px; height:22px; border-radius:6px; background:rgba(220,38,38,.1); color:var(--danger); display:grid; place-items:center; font-weight:700; flex:none; }
.b-egress .t{ font-size:12.5px; color:#8a5b5b; } .b-egress .t b{ color:var(--danger); font-weight:600; }
.b-attest{ margin-top:14px; font-family:var(--mono); font-size:11.5px; color:var(--faint); display:flex; align-items:center; gap:8px; border-top:1px solid var(--line); padding-top:13px; word-break:break-all; }
.b-attest .ok{ color:var(--teal); font-weight:700; }

/* ---------------- proof bar ---------------- */
.proof{ display:flex; gap:28px; flex-wrap:wrap; padding:20px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); font-family:var(--mono); font-size:12.5px; color:var(--muted); }
.proof span{ display:flex; align-items:center; gap:8px; } .proof span::before{ content:"◆"; color:var(--teal); font-size:9px; }

/* ---------------- pipeline strip ---------------- */
.pipe{ display:flex; align-items:stretch; gap:0; flex-wrap:wrap; margin-top:36px; border:1px solid var(--line); border-radius:14px; overflow:hidden; background:#fff; }
.pipe .st{ flex:1 1 0; min-width:120px; padding:18px 16px; border-right:1px solid var(--line); background:linear-gradient(180deg,#fff,var(--surface2)); }
.pipe .st:last-child{ border-right:none; }
.pipe .st .n{ font-family:var(--mono); font-size:10.5px; color:var(--faint); }
.pipe .st .l{ font-weight:650; font-size:14px; margin-top:8px; }
.pipe .st.route{ background:linear-gradient(180deg,rgba(37,99,235,.1),rgba(37,99,235,.03)); }
.pipe .st.route .l{ color:var(--blue); }

/* ---------------- feature grid ---------------- */
.grid3{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:40px; }
.card{ border:1px solid var(--line); border-radius:14px; padding:22px; background:#fff; transition:border-color .18s, transform .18s, box-shadow .18s; }
.card:hover{ border-color:var(--line2); transform:translateY(-2px); box-shadow:0 14px 34px -20px rgba(16,24,40,.22); }
.card .bar{ width:30px; height:2px; background:linear-gradient(90deg,var(--blue),var(--teal)); margin-bottom:16px; }
.card .n{ font-family:var(--mono); font-size:11.5px; color:var(--faint); }
.card h3{ font-size:17px; margin:12px 0 8px; }
.card p{ color:var(--muted); font-size:14px; margin:0; }
.card code{ font-family:var(--mono); font-size:12.5px; background:rgba(37,99,235,.08); color:var(--blue-d); padding:1px 5px; border-radius:4px; }

/* ---------------- split (sovereignty) ---------------- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
.checklist{ list-style:none; padding:0; margin:24px 0 0; display:flex; flex-direction:column; gap:14px; }
.checklist li{ display:flex; gap:12px; font-size:15px; color:var(--text); }
.checklist .ck{ color:var(--teal); flex:none; font-weight:700; }
.checklist small{ display:block; color:var(--muted); font-size:13px; margin-top:2px; }

/* ---------------- code block (kept dark on purpose) ---------------- */
.code{ border-radius:14px; overflow:hidden; border:1px solid #1e293b; box-shadow:0 18px 44px -26px rgba(16,24,40,.4); }
.code .top{ display:flex; align-items:center; gap:7px; padding:11px 15px; background:#0d1626; border-bottom:1px solid #1e293b; }
.code .top i{ width:11px; height:11px; border-radius:50%; display:inline-block; }
.code .top .f{ margin-left:10px; font-family:var(--mono); font-size:11.5px; color:#7c8aa5; }
.code pre{ margin:0; padding:18px 20px; background:#0b1220; overflow-x:auto; }
.code code{ font-family:var(--mono); font-size:13px; line-height:1.85; color:#c9d6ee; }
.code .cm{ color:#5f708f; } .code .del{ color:#e0748a; } .code .add{ color:#5fd0a8; } .code .key{ color:#8bb6ff; }

/* ---------------- CTA band ---------------- */
.cta-band{ border:1px solid var(--line); border-radius:18px; padding:48px; text-align:center; background:radial-gradient(600px 220px at 50% 0,rgba(37,99,235,.08),transparent), var(--bg2); }
.cta-band p{ color:var(--muted); margin:14px auto 26px; max-width:34em; }
.cta-band .cta-row{ display:flex; gap:13px; justify-content:center; flex-wrap:wrap; }

/* ---------------- footer ---------------- */
.footer{ border-top:1px solid var(--line); margin-top:8px; background:var(--bg2); }
.footer .inner{ display:flex; justify-content:space-between; gap:24px; flex-wrap:wrap; padding:34px 0; color:var(--faint); font-size:13px; }
.footer .cols{ display:flex; gap:52px; flex-wrap:wrap; }
.footer .col b{ display:block; color:var(--text); font-size:13px; margin-bottom:10px; font-weight:600; }
.footer .col a{ display:block; color:var(--muted); margin:6px 0; } .footer .col a:hover{ color:var(--text); }

/* ---------------- trial page ---------------- */
.trial{ display:grid; grid-template-columns:1.1fr .9fr; gap:56px; align-items:start; padding:56px 0 90px; }
.panel{ border:1px solid var(--line); border-radius:16px; padding:30px; background:#fff; box-shadow:0 20px 50px -34px rgba(16,24,40,.25); }
.panel h2{ font-size:22px; }
.trial-steps{ list-style:none; counter-reset:s; padding:0; margin:6px 0 0; display:flex; flex-direction:column; gap:18px; }
.trial-steps li{ counter-increment:s; display:grid; grid-template-columns:30px 1fr; gap:14px; align-items:start; }
.trial-steps li::before{ content:counter(s); width:30px; height:30px; border-radius:8px; background:rgba(37,99,235,.1); color:var(--blue); font-family:var(--mono); font-weight:700; display:grid; place-items:center; }
.trial-steps h4{ margin:2px 0 3px; font-size:15px; } .trial-steps p{ margin:0; color:var(--muted); font-size:14px; }
.google-btn{ width:100%; justify-content:center; background:#fff; color:#1f2733; border:1px solid #d5dae2; font-weight:600; }
.google-btn:hover{ background:#f4f6f9; }
.google-btn .g-ico{ background:transparent; color:#4285F4; width:20px; height:20px; font-size:15px; }
.pill{ display:inline-flex; align-items:center; gap:8px; font-family:var(--mono); font-size:11.5px; color:var(--teal); border:1px solid rgba(15,154,144,.28); border-radius:30px; padding:5px 13px; background:rgba(15,154,144,.05); }
.trial-fine{ color:var(--faint); font-size:12.5px; margin-top:14px; text-align:center; }

/* ---------------- docs ---------------- */
.docs{ display:grid; grid-template-columns:210px 1fr; gap:44px; align-items:start; padding:44px 0 90px; }
.docnav{ position:sticky; top:82px; display:flex; flex-direction:column; gap:2px; }
.docnav a{ font-size:13.5px; color:var(--muted); padding:6px 11px; border-radius:7px; border-left:2px solid transparent; }
.docnav a:hover{ color:var(--text); } .docnav a.on{ color:var(--text); background:rgba(37,99,235,.08); border-left-color:var(--blue); }
.docnav .grp{ font-family:var(--mono); font-size:10px; letter-spacing:.14em; text-transform:uppercase; color:var(--faint); margin:16px 0 6px 11px; }
.doc h2{ font-size:24px; scroll-margin-top:86px; } .doc h3{ font-size:17px; margin-top:26px; scroll-margin-top:86px; }
.doc p{ color:var(--muted); } .doc .sec{ padding:20px 0; border-top:1px solid var(--line); }
.doc code{ font-family:var(--mono); font-size:12.5px; background:rgba(37,99,235,.08); color:var(--blue-d); padding:1px 5px; border-radius:4px; }
.doc .code code{ background:none; color:inherit; padding:0; }   /* don't tint code inside dark blocks */
.badge-get,.badge-post{ font-family:var(--mono); font-size:10px; font-weight:700; padding:2px 8px; border-radius:6px; margin-right:8px; }
.badge-get{ color:#0f9a90; background:rgba(15,154,144,.1); } .badge-post{ color:var(--blue-d); background:rgba(37,99,235,.1); }

/* ---------------- responsive ---------------- */
@media (max-width:860px){
  .hero,.split,.trial,.docs{ grid-template-columns:1fr; gap:34px; }
  .grid3{ grid-template-columns:1fr; }
  .nav .links{ display:none; }
  .docnav{ position:static; flex-direction:row; flex-wrap:wrap; }
  .cta-band{ padding:34px 22px; }
}