/* ==========================================================================
   Nullux.ai — Production stylesheet
   Palette: charcoal / off-white / neutral greys, decision-state colour only
   ========================================================================== */

:root{
  --charcoal:#0a0b0d;
  --charcoal-2:#111316;
  --paper:#f6f6f4;
  --paper-2:#eceae6;
  --ink:#0a0b0d;
  --ink-soft:#5c5f62;
  --hair:#2a2c2f;
  --hair-light:#dcdad5;
  --allow:#2f8f5b;
  --allow-bg:#e7f3ec;
  --block:#b8392f;
  --block-bg:#f7e9e7;
  --review:#b8892c;
  --review-bg:#f6efe0;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --maxw:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{margin:0;padding:0;}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
a{color:inherit;}
img{max-width:100%;display:block;}
button{font-family:inherit;}

/* reveal-on-scroll */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease-out, transform .5s ease-out;}
.reveal.in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none;}
}

/* ---------- accessibility: skip link ---------- */
.skip-link{
  position:absolute;left:12px;top:-60px;z-index:100;
  background:var(--ink);color:var(--paper);padding:10px 16px;
  font-size:13px;font-weight:600;text-decoration:none;border-radius:2px;
  transition:top .2s ease;
}
.skip-link:focus{top:12px;}

/* ---------- Header ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,246,244,0.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--hair-light);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 32px;max-width:var(--maxw);margin:0 auto;}
.brand img{height:28px;width:auto;}
.navlinks{display:flex;align-items:center;gap:30px;font-size:14px;color:var(--ink-soft);}
.navlinks a{text-decoration:none;}
.navlinks a:hover{color:var(--ink);}
.nav-right{display:flex;align-items:center;gap:16px;}
.btn{
  font-family:var(--sans);
  font-size:13px;font-weight:600;letter-spacing:0.02em;
  padding:10px 20px;border-radius:2px;cursor:pointer;
  border:1px solid transparent;text-decoration:none;display:inline-block;
}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:#000;}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--hair-light);}
.btn-ghost:hover{border-color:var(--ink);}
.btn-ghost-dark{background:transparent;color:var(--paper);border:1px solid #34383c;}
.btn-ghost-dark:hover{border-color:var(--paper);}
.btn-primary-dark{background:var(--paper);color:var(--charcoal);}
.btn-primary-dark:hover{background:#fff;}
.btn-block{display:block;width:100%;text-align:center;}

.navtoggle{display:none;background:none;border:1px solid var(--hair-light);border-radius:2px;padding:8px 10px;}
.navtoggle span{display:block;width:18px;height:2px;background:var(--ink);margin:4px 0;}

/* ---------- section scaffolding ---------- */
section{padding:128px 0;}
.dark{background:var(--charcoal);color:var(--paper);}
.dark .ink-soft{color:#9a9ea1;}
.light-alt{background:var(--paper-2);}
.eyebrow{
  font-family:var(--mono);
  font-size:11px;letter-spacing:0.16em;text-transform:uppercase;
  color:var(--ink-soft);margin-bottom:20px;font-weight:600;
}
.dark .eyebrow{color:#9a9ea1;}
h1{font-size:66px;line-height:1.03;letter-spacing:-0.02em;margin:0 0 22px;font-weight:800;}
h2{font-size:38px;line-height:1.14;letter-spacing:-0.01em;margin:0 0 22px;font-weight:800;max-width:760px;}
h3{font-size:19px;margin:0 0 10px;font-weight:700;}
p.lede{font-size:19px;color:var(--ink-soft);max-width:640px;margin:0 0 20px;}
.dark p.lede{color:#b6b9bb;}
.ink-soft{color:var(--ink-soft);}

/* ---------- Hero ---------- */
.hero{padding:88px 0 100px;background:var(--charcoal);color:var(--paper);position:relative;overflow:hidden;}
.hero .wrap{position:relative;z-index:2;}
.hero-sub{font-size:26px;color:var(--paper);font-weight:600;margin:0 0 30px;line-height:1.35;max-width:760px;}
.decision-row{display:flex;gap:10px;margin:0 0 40px;font-family:var(--mono);font-size:12px;letter-spacing:0.08em;flex-wrap:wrap;}
.chip{
  padding:6px 13px;border-radius:2px;font-weight:700;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);
}
.chip-allow{background:var(--allow-bg);color:var(--allow);}
.chip-block{background:var(--block-bg);color:var(--block);}
.chip-review{background:var(--review-bg);color:var(--review);}
.cta-row{display:flex;gap:14px;margin-bottom:76px;flex-wrap:wrap;}

.supply-vis{padding:40px 30px;border:1px solid #212427;border-radius:4px;background:#0f1113;}
.supply-row{display:flex;align-items:center;justify-content:space-between;gap:22px;}
.supply-col h4{font-family:var(--mono);font-size:11px;letter-spacing:0.1em;text-transform:uppercase;color:#8a8e91;margin:0 0 16px;font-weight:600;}
.dot-field{display:flex;flex-wrap:wrap;gap:6px;max-width:190px;}
.dot{width:8px;height:8px;border-radius:50%;background:#33373a;}
.arrow{color:#4a4e51;font-size:22px;flex:0 0 auto;}
.engine-box{
  flex:0 0 auto;text-align:center;padding:20px 24px;border:1px solid #34383c;border-radius:3px;
  background:#141618;
}
.engine-box span{font-family:var(--mono);font-size:11px;letter-spacing:0.09em;color:#eceded;font-weight:700;}
.result-dots{display:flex;flex-direction:column;gap:9px;align-items:flex-start;}
.result-row{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:0.06em;color:#c7cacc;}
.result-row .dot-line{display:flex;gap:4px;}
.result-row .dot-line .dot{width:7px;height:7px;}
.dot.allow{background:var(--allow);}
.dot.block{background:var(--block);}
.dot.review{background:var(--review);}
.supply-caption{margin-top:26px;padding-top:20px;border-top:1px solid #212427;font-family:var(--mono);font-size:11px;color:#8a8e91;letter-spacing:0.04em;}

/* ---------- flow diagrams ---------- */
.flow{display:flex;align-items:stretch;justify-content:space-between;gap:14px;margin:44px 0 28px;flex-wrap:wrap;}
.flow-node{
  flex:1;min-width:150px;text-align:center;padding:22px 12px;border:1px solid var(--hair-light);
  border-radius:3px;background:#fff;font-family:var(--mono);font-size:12px;letter-spacing:0.04em;
  font-weight:700;text-transform:uppercase;display:flex;align-items:center;justify-content:center;
}
.flow-node.emph{background:var(--charcoal);color:var(--paper);border-color:var(--charcoal);}
.flow-arrow{color:var(--ink-soft);font-size:20px;flex:0 0 auto;align-self:center;}
.caption{font-size:15px;color:var(--ink-soft);max-width:600px;}
.light-alt .flow-node{background:var(--paper);}
.light-alt .flow-node.emph{background:var(--charcoal);color:var(--paper);border-color:var(--charcoal);}

/* ---------- process steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:34px 24px;margin-top:54px;}
.step{border-top:2px solid #2a2c2f;padding-top:18px;}
.step .num{font-family:var(--mono);font-size:12px;color:#c9a24a;font-weight:700;margin-bottom:12px;}
.step .kicker{font-family:var(--mono);font-size:10px;letter-spacing:0.1em;text-transform:uppercase;color:#8a8e91;margin-bottom:6px;}
.step h4{font-size:16px;margin:0 0 10px;font-weight:700;}
.step p{font-size:13.5px;color:#9a9ea1;margin:0;line-height:1.55;}
.process-close{margin-top:64px;padding-top:36px;border-top:1px solid #212427;font-size:20px;font-weight:600;max-width:640px;line-height:1.4;}

/* ---------- decision states ---------- */
.decision-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:50px;}
.decision-card{border:1px solid var(--hair-light);padding:38px 28px;background:#fff;}
.decision-card .state{font-family:var(--mono);font-size:42px;font-weight:800;letter-spacing:-0.01em;margin-bottom:10px;}
.decision-card.allow{border-top:3px solid var(--allow);}
.decision-card.block{border-top:3px solid var(--block);}
.decision-card.review{border-top:3px solid var(--review);}
.decision-card.allow .state{color:var(--allow);}
.decision-card.block .state{color:var(--block);}
.decision-card.review .state{color:var(--review);}
.decision-card .sub{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:0.08em;color:var(--ink-soft);margin-bottom:18px;font-weight:700;}
.decision-card p{font-size:14.5px;color:#3a3c3e;margin:0;}
.decision-note{margin-top:44px;font-size:17px;max-width:640px;font-weight:500;}

/* ---------- evidence grid ---------- */
.evidence-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:50px;background:var(--hair-light);border:1px solid var(--hair-light);}
.evidence-tile{background:#fff;padding:26px 20px;font-family:var(--mono);font-size:12.5px;letter-spacing:0.02em;font-weight:700;text-transform:uppercase;min-height:96px;display:flex;align-items:center;}

/* ---------- enforcement footnote ---------- */
.footnote{font-family:var(--mono);font-size:12.5px;color:var(--ink-soft);margin-top:18px;padding-top:18px;border-top:1px solid var(--hair-light);max-width:640px;}

/* ---------- today / next / at scale ---------- */
.stage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:50px;}
.stage-card{border:1px solid var(--hair-light);background:#fff;padding:30px 26px;}
.stage-card .stage-tag{font-family:var(--mono);font-size:10.5px;letter-spacing:0.12em;text-transform:uppercase;color:#c9a24a;font-weight:700;margin-bottom:14px;}
.stage-card h4{font-size:17px;margin:0 0 18px;font-weight:700;}
.stage-card ul{list-style:none;margin:0;padding:0;}
.stage-card ul li{font-size:13.5px;color:#3a3c3e;padding:9px 0;border-top:1px solid var(--hair-light);}
.stage-card ul li:first-child{border-top:none;}

/* ---------- audit record ---------- */
.record{border:1px solid #24272a;background:#0f1113;font-family:var(--mono);font-size:13px;margin-top:50px;}
.record-row{display:grid;grid-template-columns:160px 1fr;border-bottom:1px solid #1c1f22;padding:16px 24px;gap:20px;}
.record-row:last-child{border-bottom:none;}
.record-key{color:#7d8184;letter-spacing:0.06em;text-transform:uppercase;font-size:11px;padding-top:2px;}
.record-val{color:#e6e7e8;}
.record-val.allow{color:var(--allow);font-weight:700;}
.record-val.block{color:var(--block);font-weight:700;}
.record-val.pending{color:#6f7376;font-style:italic;}

/* ---------- independence ---------- */
.independence-stack{margin-top:56px;display:flex;flex-direction:column;gap:0;}
.independence-row{display:flex;align-items:baseline;gap:24px;padding:20px 0;border-top:1px solid #212427;font-size:22px;font-weight:600;}
.independence-row:last-child{border-bottom:1px solid #212427;}
.independence-row .num{font-family:var(--mono);font-size:13px;color:#7d8184;flex:0 0 30px;}
.independence-quote{margin-top:56px;font-size:24px;font-weight:700;max-width:700px;line-height:1.4;}

/* ---------- work with nullux ---------- */
.work-primary{border:1px solid var(--hair-light);background:#fff;padding:44px 40px;margin-top:44px;}
.work-primary .tag{font-family:var(--mono);font-size:10.5px;letter-spacing:0.1em;color:var(--ink-soft);text-transform:uppercase;margin-bottom:16px;font-weight:700;}
.work-primary h4{font-size:24px;margin:0 0 16px;font-weight:800;line-height:1.25;max-width:640px;}
.work-primary p{font-size:15.5px;color:#3a3c3e;margin:0 0 14px;max-width:640px;}
.work-primary .btn{margin-top:12px;}

.work-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:22px;}
.work-card{border:1px solid var(--hair-light);background:#fff;padding:28px 26px;display:flex;flex-direction:column;}
.work-card .tag{font-family:var(--mono);font-size:10.5px;letter-spacing:0.1em;color:var(--ink-soft);text-transform:uppercase;margin-bottom:16px;font-weight:700;}
.work-card h4{font-size:17px;margin:0 0 14px;font-weight:700;line-height:1.3;}
.work-card p{font-size:14px;color:#3a3c3e;margin:0 0 14px;flex-grow:1;}
.work-card .btn{margin-top:10px;align-self:flex-start;}

/* ---------- about / team ---------- */
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:54px;}
.team-card{border-top:2px solid var(--hair);padding-top:20px;}
.avatar{width:64px;height:64px;border:1px solid var(--hair-light);border-radius:2px;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:700;font-size:15px;color:var(--ink-soft);margin-bottom:18px;background:#fff;}
.team-card .name{font-size:17px;font-weight:700;margin-bottom:4px;}
.team-card .role{font-family:var(--mono);font-size:11px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:14px;}
.team-card p{font-size:13.5px;color:#3a3c3e;margin:0;}

/* ---------- FAQ ---------- */
.faq-list{margin-top:50px;border-top:1px solid var(--hair-light);}
.faq-item{border-bottom:1px solid var(--hair-light);}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:24px 2px;cursor:pointer;font-weight:700;font-size:16px;gap:20px;background:none;border:none;width:100%;text-align:left;color:inherit;}
.faq-q .plus{font-family:var(--mono);font-size:18px;color:var(--ink-soft);flex:0 0 auto;transition:transform .25s ease;}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.open .faq-a{max-height:320px;}
.faq-a p{font-size:14.5px;color:var(--ink-soft);padding:0 2px 24px;margin:0;max-width:680px;}
.faq-close{margin-top:40px;font-size:15px;}
.faq-close a{text-decoration:underline;font-weight:600;}

/* ---------- contact ---------- */
.contact-form{display:grid;gap:16px;max-width:560px;margin-top:50px;}
.field label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:0.06em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:8px;font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--hair-light);border-radius:2px;
  font-family:var(--sans);font-size:14.5px;background:#fff;color:var(--ink);
}
.field textarea{resize:vertical;min-height:110px;}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--ink);outline-offset:1px;}
.form-note{font-size:12.5px;color:var(--ink-soft);margin-top:4px;}
#formStatus{margin-top:14px;font-size:13.5px;}

/* ---------- final CTA ---------- */
.cta-band{background:var(--charcoal);color:var(--paper);padding:110px 0;}
.cta-band .eyebrow{color:#9a9ea1;}
.cta-band h2{color:var(--paper);font-size:44px;}
.cta-band .cta-row{margin-bottom:0;}

/* ---------- footer ---------- */
footer{background:var(--charcoal);color:#8a8e91;padding:56px 0 40px;border-top:1px solid #1a1c1f;}
.foot-top{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:32px;padding-bottom:36px;border-bottom:1px solid #1a1c1f;margin-bottom:28px;}
.foot-logo img{height:24px;width:auto;}
.foot-links{display:flex;gap:26px;flex-wrap:wrap;font-size:13.5px;}
.foot-links a{text-decoration:none;color:#8a8e91;}
.foot-links a:hover{color:var(--paper);}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12.5px;font-family:var(--mono);color:#6f7376;}

/* ---------- responsive ---------- */
@media (max-width:900px){
  section{padding:80px 0;}
  .wrap{padding:0 20px;}
  .nav{padding:14px 20px;}
  .navlinks{position:fixed;top:60px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--hair-light);flex-direction:column;align-items:flex-start;gap:0;padding:8px 20px 16px;display:none;}
  .navlinks.open{display:flex;}
  .navlinks a{padding:12px 0;width:100%;border-bottom:1px solid var(--hair-light);}
  .navtoggle{display:block;}
  h1{font-size:38px;}
  h2{font-size:27px;}
  .hero-sub{font-size:20px;}
  .supply-row{flex-direction:column;align-items:stretch;gap:20px;}
  .arrow{transform:rotate(90deg);align-self:center;}
  .flow{flex-direction:column;align-items:stretch;}
  .flow-arrow{transform:rotate(90deg);align-self:center;}
  .steps{grid-template-columns:1fr;}
  .decision-grid{grid-template-columns:1fr;}
  .stage-grid{grid-template-columns:1fr;}
  .evidence-grid{grid-template-columns:repeat(2,1fr);}
  .work-grid{grid-template-columns:1fr;}
  .work-primary{padding:30px 24px;}
  .work-primary h4{font-size:20px;}
  .work-card{padding:26px 22px;}
  .team-grid{grid-template-columns:1fr;}
  .record-row{grid-template-columns:110px 1fr;padding:14px 16px;}
  .cta-row{flex-direction:column;align-items:flex-start;}
  .foot-top{flex-direction:column;}
  .foot-bottom{flex-direction:column;}
  h1{line-height:1.08;}
}
@media (max-width:600px){
  .evidence-grid{grid-template-columns:1fr;}
  .btn{width:100%;text-align:center;}
  .cta-row .btn{width:100%;}
}