/* ============================================================
   BioCheck Technologies — Design System
   All brand tokens live here. Swap this block + /assets/brand/
   when the final design system arrives; pages never hard-code
   colours or type.
   ============================================================ */
:root{
  --midnight:#07111F;
  --midnight-2:#0B1A2E;
  --midnight-3:#101F36;
  --cyan:#18D7E8;
  --green:#32E875;
  --violet:#7657FF;
  --white:#F7F9FC;
  --text:#DCE4EF;
  --text-dim:#8FA0B8;
  --line:rgba(24,215,232,.14);
  --line-soft:rgba(247,249,252,.08);
  --radius:14px;
  --font-display:'Manrope',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --max:1180px;
  --ease:cubic-bezier(.22,.8,.3,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--midnight);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

h1,h2,h3,h4{font-family:var(--font-display);color:var(--white);line-height:1.12;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(2.6rem,6vw,4.4rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem)}
h3{font-size:1.28rem}
.lead{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--text-dim);max-width:46rem}
.kicker{font-family:var(--font-display);font-weight:700;font-size:.78rem;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);margin-bottom:1rem}
.kicker.violet{color:var(--violet)}
.kicker.green{color:var(--green)}

/* ---------- header ---------- */
.site-header{position:fixed;inset:0 0 auto;z-index:100;transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(7,17,31,.86);backdrop-filter:blur(14px);border-color:var(--line-soft)}
.nav{display:flex;align-items:center;gap:2rem;height:72px}
.logo{display:flex;align-items:center;gap:.65rem;font-family:var(--font-display);font-weight:800;font-size:1.06rem;color:var(--white);letter-spacing:.02em}
.logo img{width:34px;height:34px}
.logo .co{color:var(--cyan)}
.nav-links{display:flex;gap:1.6rem;margin-left:auto;align-items:center}
.nav-links a{font-size:.92rem;color:var(--text-dim);transition:color .2s}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--white)}
.nav-cta{background:var(--cyan);color:var(--midnight)!important;font-weight:700;padding:.6rem 1.15rem;border-radius:999px;font-size:.9rem;transition:transform .2s var(--ease),box-shadow .2s}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 24px rgba(24,215,232,.35)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line-soft);border-radius:8px;color:var(--white);padding:.5rem .7rem;font-size:1.05rem;cursor:pointer}
@media(max-width:920px){
  .nav-links{display:none;position:fixed;top:72px;left:0;right:0;flex-direction:column;background:var(--midnight-2);padding:1.5rem;border-bottom:1px solid var(--line-soft);gap:1.1rem}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-display);font-weight:700;font-size:.98rem;padding:.85rem 1.7rem;border-radius:999px;transition:transform .2s var(--ease),box-shadow .25s;cursor:pointer;border:none}
.btn-primary{background:var(--cyan);color:var(--midnight)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 34px rgba(24,215,232,.4)}
.btn-ghost{border:1px solid var(--line);color:var(--white);background:transparent}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-green{background:var(--green);color:var(--midnight)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;padding:9.5rem 0 5rem;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(52rem 30rem at 78% 18%,rgba(24,215,232,.09),transparent 60%),
  radial-gradient(40rem 26rem at 12% 82%,rgba(118,87,255,.08),transparent 60%),
  var(--midnight)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(24,215,232,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(24,215,232,.045) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(60rem 36rem at 60% 30%,#000 30%,transparent 75%)}
.hero .wrap{position:relative}
.hero .lead{margin:1.6rem 0 1.2rem}
.cap-line{font-family:var(--font-display);font-weight:700;color:var(--white);letter-spacing:.04em;margin-bottom:2.4rem}
.cap-line span{color:var(--cyan)}
.hero-ctas{display:flex;gap:1rem;flex-wrap:wrap}

/* ---------- sections ---------- */
section{padding:6.2rem 0}
.section-dark{background:var(--midnight-2)}
.section-head{max-width:52rem;margin-bottom:3.2rem}
.grid{display:grid;gap:1.4rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:920px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.card{background:var(--midnight-3);border:1px solid var(--line-soft);border-radius:var(--radius);padding:1.8rem;transition:border-color .25s,transform .25s var(--ease)}
.card:hover{border-color:var(--line);transform:translateY(-3px)}
.card h3{margin:.9rem 0 .5rem}
.card p{color:var(--text-dim);font-size:.95rem}
.card .icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(24,215,232,.1);color:var(--cyan);font-size:1.2rem}
a.card{display:block}
.card .more{display:inline-block;margin-top:1rem;font-family:var(--font-display);font-weight:700;font-size:.86rem;color:var(--cyan)}

/* status badges — claims discipline */
.badge{display:inline-block;font-family:var(--font-display);font-weight:700;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;padding:.28rem .7rem;border-radius:999px;border:1px solid}
.badge-production{color:var(--green);border-color:rgba(50,232,117,.4)}
.badge-prototype{color:var(--cyan);border-color:rgba(24,215,232,.4)}
.badge-demo{color:var(--violet);border-color:rgba(118,87,255,.45)}
.badge-planned{color:var(--text-dim);border-color:rgba(143,160,184,.4)}

/* ---------- industry questions ---------- */
.q-rail{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line-soft)}
.q-row{display:grid;grid-template-columns:220px 1fr;gap:2rem;padding:1.7rem 0;border-bottom:1px solid var(--line-soft);align-items:baseline}
.q-row .sector{font-family:var(--font-display);font-weight:700;font-size:.8rem;letter-spacing:.2em;text-transform:uppercase;color:var(--text-dim)}
.q-row .q{font-family:var(--font-display);font-weight:700;font-size:clamp(1.15rem,2.4vw,1.7rem);color:var(--white)}
.q-row .q em{font-style:normal;color:var(--cyan)}
@media(max-width:700px){.q-row{grid-template-columns:1fr;gap:.4rem}}
.answer-banner{text-align:center;padding:4.5rem 0 0}
.answer-banner h2 span{color:var(--green)}

/* ---------- architecture stack ---------- */
.stack{display:flex;flex-direction:column;gap:.9rem;max-width:44rem;margin:0 auto}
.stack-tier{border:1px solid var(--line-soft);border-radius:var(--radius);padding:1.15rem 1.5rem;background:var(--midnight-3);text-align:center;position:relative}
.stack-tier .t{font-family:var(--font-display);font-weight:800;color:var(--white)}
.stack-tier .d{font-size:.85rem;color:var(--text-dim)}
.stack-tier.accent{border-color:var(--line)}
.stack-arrow{text-align:center;color:var(--cyan);font-size:1.1rem;line-height:1}
.stack-chips{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-top:.7rem}
.chip{font-size:.78rem;padding:.3rem .8rem;border-radius:999px;border:1px solid var(--line-soft);color:var(--text-dim)}

/* ---------- demo ---------- */
.demo-shell{background:var(--midnight-3);border:1px solid var(--line);border-radius:20px;padding:2.2rem;max-width:900px;margin:0 auto;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.demo-tabs{display:flex;gap:.6rem;margin-bottom:1.6rem;flex-wrap:wrap}
.demo-tab{flex:1;min-width:150px;font-family:var(--font-display);font-weight:700;font-size:.92rem;padding:.75rem;border-radius:10px;border:1px solid var(--line-soft);background:transparent;color:var(--text-dim);cursor:pointer;transition:all .2s}
.demo-tab.active{border-color:var(--cyan);color:var(--cyan);background:rgba(24,215,232,.07)}
.demo-stage{display:grid;grid-template-columns:280px 1fr;gap:2rem;align-items:center}
@media(max-width:760px){.demo-stage{grid-template-columns:1fr}}
.scan-viz{position:relative;width:100%;aspect-ratio:1;border-radius:16px;background:var(--midnight);border:1px solid var(--line-soft);overflow:hidden;display:flex;align-items:center;justify-content:center}
.scan-viz svg{width:62%;height:62%}
.scan-frame{position:absolute;inset:14px;pointer-events:none}
.scan-frame i{position:absolute;width:26px;height:26px;border:3px solid var(--cyan);opacity:.9}
.scan-frame i:nth-child(1){top:0;left:0;border-right:0;border-bottom:0;border-radius:8px 0 0 0}
.scan-frame i:nth-child(2){top:0;right:0;border-left:0;border-bottom:0;border-radius:0 8px 0 0}
.scan-frame i:nth-child(3){bottom:0;right:0;border-left:0;border-top:0;border-radius:0 0 8px 0}
.scan-frame i:nth-child(4){bottom:0;left:0;border-right:0;border-top:0;border-radius:0 0 0 8px}
.scan-line{position:absolute;left:8%;right:8%;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:0;top:12%}
.scanning .scan-line{opacity:1;animation:scanmove 1.5s ease-in-out infinite alternate}
@keyframes scanmove{from{top:12%}to{top:86%}}
.scan-result{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(7,17,31,.82);opacity:0;transition:opacity .35s}
.scan-result.show{opacity:1}
.scan-result svg{width:44%;height:44%}
.tick-path{stroke-dasharray:120;stroke-dashoffset:120}
.show .tick-path{animation:tickdraw .6s var(--ease) forwards}
@keyframes tickdraw{to{stroke-dashoffset:0}}
.demo-steps{list-style:none;display:flex;flex-direction:column;gap:.55rem}
.demo-step{display:flex;align-items:center;gap:.8rem;padding:.65rem .9rem;border-radius:10px;border:1px solid transparent;color:var(--text-dim);font-size:.94rem;transition:all .25s}
.demo-step .dot{width:9px;height:9px;border-radius:50%;background:var(--line-soft);flex:none;transition:background .25s}
.demo-step.active{border-color:var(--line);color:var(--white);background:rgba(24,215,232,.05)}
.demo-step.active .dot{background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.demo-step.done{color:var(--text)}
.demo-step.done .dot{background:var(--green)}
.demo-outcomes{display:flex;gap:.5rem;margin-top:1.2rem;flex-wrap:wrap}
.outcome-btn{font-size:.8rem;padding:.45rem .9rem;border-radius:999px;border:1px solid var(--line-soft);background:none;color:var(--text-dim);cursor:pointer}
.outcome-btn.sel{border-color:var(--violet);color:var(--violet)}
.demo-status{margin-top:1.2rem;font-family:var(--font-display);font-weight:700;min-height:1.6em}
.demo-status.ok{color:var(--green)}
.demo-status.fail{color:#FF6B6B}
.demo-status.review{color:var(--violet)}
.demo-disclaimer{text-align:center;font-size:.8rem;color:var(--text-dim);margin-top:1.4rem}
.demo-run{margin-top:1.4rem}

/* ---------- console preview ---------- */
.console-frame{background:var(--midnight);border:1px solid var(--line-soft);border-radius:16px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.console-bar{display:flex;gap:.45rem;padding:.8rem 1.1rem;border-bottom:1px solid var(--line-soft)}
.console-bar i{width:10px;height:10px;border-radius:50%;background:var(--line-soft)}
.console-body{display:grid;grid-template-columns:190px 1fr;min-height:340px}
.console-side{border-right:1px solid var(--line-soft);padding:1.1rem;display:flex;flex-direction:column;gap:.55rem;font-size:.82rem;color:var(--text-dim)}
.console-side .on{color:var(--cyan)}
.console-main{padding:1.3rem;display:flex;flex-direction:column;gap:1rem}
.console-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem}
.ccard{background:var(--midnight-3);border:1px solid var(--line-soft);border-radius:10px;padding:.9rem}
.ccard .n{font-family:var(--font-display);font-weight:800;font-size:1.35rem;color:var(--white)}
.ccard .l{font-size:.72rem;color:var(--text-dim);letter-spacing:.06em;text-transform:uppercase}
.console-rows{display:flex;flex-direction:column;gap:.5rem;font-size:.82rem}
.crow{display:flex;justify-content:space-between;padding:.6rem .8rem;background:var(--midnight-3);border-radius:8px;color:var(--text-dim)}
.crow b{color:var(--text);font-weight:600}
.crow .ok{color:var(--green)}.crow .rev{color:var(--violet)}
@media(max-width:700px){.console-body{grid-template-columns:1fr}.console-side{display:none}.console-cards{grid-template-columns:1fr}}

/* ---------- page hero (inner pages) ---------- */
.page-hero{padding:10rem 0 4.5rem;position:relative;overflow:hidden}
.page-hero .hero-bg{opacity:.7}
.page-hero .wrap{position:relative}
.breadcrumb{font-size:.82rem;color:var(--text-dim);margin-bottom:1.4rem}
.breadcrumb a:hover{color:var(--cyan)}

/* ---------- prose / trust ---------- */
.prose{max-width:46rem}
.prose h2{margin:2.6rem 0 1rem;font-size:1.6rem}
.prose p{margin-bottom:1rem;color:var(--text-dim)}
.prose ul{margin:0 0 1rem 1.2rem;color:var(--text-dim)}
.prose li{margin-bottom:.4rem}
.note{border-left:3px solid var(--violet);background:rgba(118,87,255,.06);padding:1rem 1.3rem;border-radius:0 10px 10px 0;font-size:.9rem;color:var(--text-dim);margin:1.6rem 0}

/* ---------- tables ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:.9rem}
.tbl th{font-family:var(--font-display);text-align:left;color:var(--white);padding:.8rem;border-bottom:1px solid var(--line)}
.tbl td{padding:.8rem;border-bottom:1px solid var(--line-soft);color:var(--text-dim)}

/* ---------- forms ---------- */
.form{display:grid;gap:1.1rem;max-width:560px}
.form label{font-family:var(--font-display);font-weight:700;font-size:.85rem;color:var(--white);display:block;margin-bottom:.4rem}
.form input,.form select,.form textarea{width:100%;background:var(--midnight-3);border:1px solid var(--line-soft);border-radius:10px;padding:.8rem 1rem;color:var(--white);font-family:var(--font-body);font-size:.95rem;transition:border-color .2s}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--cyan)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
@media(max-width:600px){.form-row{grid-template-columns:1fr}}
.form-note{font-size:.8rem;color:var(--text-dim)}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(120deg,rgba(24,215,232,.1),rgba(118,87,255,.1)),var(--midnight-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);text-align:center}
.cta-band .lead{margin:1.1rem auto 2rem}

/* ---------- footer ---------- */
footer{background:var(--midnight-2);border-top:1px solid var(--line-soft);padding:4.5rem 0 2.5rem;font-size:.9rem}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:2.4rem;margin-bottom:3rem}
@media(max-width:920px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid h4{font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;color:var(--text-dim);margin-bottom:1rem;font-weight:700}
.foot-grid a{display:block;color:var(--text-dim);margin-bottom:.55rem;transition:color .2s}
.foot-grid a:hover{color:var(--cyan)}
.foot-brand p{color:var(--text-dim);margin-top:1rem;max-width:22rem;font-size:.86rem}
.foot-base{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-top:2rem;border-top:1px solid var(--line-soft);color:var(--text-dim);font-size:.8rem}

/* ---------- imagery ---------- */
.hero-split{display:grid;grid-template-columns:1.05fr .95fr;gap:3.5rem;align-items:center}
@media(max-width:920px){.hero-split{grid-template-columns:1fr}}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;box-shadow:0 40px 90px rgba(0,0,0,.55);max-width:460px;justify-self:end}
@media(max-width:920px){.hero-visual{justify-self:start;max-width:420px}}
.hero-visual img{width:100%;height:auto;display:block}
.hero-visual i{position:absolute;width:34px;height:34px;border:3px solid var(--cyan);opacity:.95;pointer-events:none}
.hero-visual i:nth-of-type(1){top:14px;left:14px;border-right:0;border-bottom:0;border-radius:10px 0 0 0}
.hero-visual i:nth-of-type(2){top:14px;right:14px;border-left:0;border-bottom:0;border-radius:0 10px 0 0}
.hero-visual i:nth-of-type(3){bottom:14px;right:14px;border-left:0;border-top:0;border-radius:0 0 10px 0}
.hero-visual i:nth-of-type(4){bottom:14px;left:14px;border-right:0;border-top:0;border-radius:0 0 0 10px}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,31,0) 60%,rgba(7,17,31,.35));pointer-events:none}

.photo-card{position:relative;display:block;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-soft);background:var(--midnight-3);transition:border-color .25s,transform .25s var(--ease)}
.photo-card:hover{border-color:var(--line);transform:translateY(-3px)}
.pc-img{aspect-ratio:4/3;overflow:hidden}
.pc-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s var(--ease)}
.photo-card:hover .pc-img img{transform:scale(1.04)}
.pc-body{padding:1.2rem 1.3rem 1.4rem}
.pc-body .sector{display:block;font-family:var(--font-display);font-weight:700;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--text-dim);margin-bottom:.45rem}
.pc-body .q{font-family:var(--font-display);font-weight:700;font-size:1.12rem;color:var(--white);line-height:1.3}
.pc-body .q em{font-style:normal;color:var(--cyan)}

.img-banner{border-radius:20px;overflow:hidden;border:1px solid var(--line-soft);box-shadow:0 30px 70px rgba(0,0,0,.45);margin-top:2.5rem}
.img-banner img{width:100%;display:block}

.page-hero .hero-split .hero-visual{max-width:520px}

/* ---------- reveal motion ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .scanning .scan-line{animation:none}
}