/* ============================================================
   AMPHIBIA BIOSCIENCES — shared design system
   Tokens + chrome (nav, dropdowns, buttons, cards, footer).
   Page-specific layout stays in each page's own <style>.
   ============================================================ */

/* self-hosted so the pages render identically offline and in headless QA */
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi-900.woff2') format('woff2');font-weight:900;font-style:normal;font-display:swap}
@font-face{font-family:'JetBrains Mono';src:url('assets/fonts/jbmono-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'JetBrains Mono';src:url('assets/fonts/jbmono-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}

:root{
  --lime:#c4f04a;
  --lime-hi:#d3fa63;
  --lime-pale:#cbee8c;
  --ink:#000000;
  --panel-green:#080d07;
  --surface:#0a0f09;
  --white:#ffffff;
  --mut:#9aa093;
  --mut-2:#6f766a;
  --line:rgba(255,255,255,.10);
  --card:rgba(255,255,255,.035);
  --card-2:rgba(12,16,11,.72);
  --warn:#f2a83c;
  --bad:#f2604a;
  --nav-h:104px;
  --pad:48px;
  --maxw:1440px;
  --disp:'Satoshi','Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);color:var(--white);
  font-family:var(--disp);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}

/* ---------------- type helpers ---------------- */
.mono{font-family:var(--mono);font-weight:400}
.lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--mut)}
.val{font-family:var(--mono);font-size:11.5px;letter-spacing:.02em;color:#e8ece5}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.15em;
  text-transform:uppercase;color:var(--lime);margin-bottom:20px;
}
.eyebrow .n{color:var(--mut-2)}

/* renders arrive on ~pure black: screen-blend rather than alpha-cut.
   NOTE: the blend needs a backdrop inside its own stacking context —
   see README. Never add mask-image here, it kills the blend. */
.blend{mix-blend-mode:screen}

/* ---------------- nav ---------------- */
.nav{
  position:absolute;top:0;left:0;right:0;height:var(--nav-h);z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--pad);
}
.nav.is-fixed{position:fixed;background:rgba(4,7,4,.82);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line);height:76px}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{width:42px;height:42px;flex:none;object-fit:contain}
.brand-txt{display:flex;flex-direction:column;gap:3px}
.brand-name{font-family:var(--disp);font-weight:700;font-size:25px;letter-spacing:.055em;line-height:1;color:#fff}
.brand-sub{font-family:var(--mono);font-size:8.5px;letter-spacing:.42em;color:#b9c0b1;line-height:1;padding-left:2px}

.nav-links{display:flex;align-items:center;gap:38px;height:100%}
.navitem{position:relative;height:100%;display:flex;align-items:center}
.navitem>button,.nav-links>a{
  display:flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:500;letter-spacing:.13em;
  text-transform:uppercase;color:#fff;opacity:.94;
  transition:color .18s ease;
}
.navitem>button:hover,.navitem.open>button{color:var(--lime)}
.navitem svg{width:9px;height:9px;flex:none;opacity:.8;transition:transform .2s ease}
.navitem.open svg{transform:rotate(180deg)}

.dropdown{
  position:absolute;top:calc(50% + 26px);left:50%;transform:translate(-50%,-8px);
  min-width:290px;padding:10px;border-radius:12px;
  background:rgba(8,13,7,.96);border:1px solid var(--line);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  box-shadow:0 26px 60px rgba(0,0,0,.6);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.navitem.open .dropdown{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.dropdown a{display:block;padding:11px 13px;border-radius:8px;transition:background .16s ease}
.dropdown a:hover{background:rgba(196,240,74,.1)}
.dropdown .dt{display:block;font-size:13.5px;font-weight:500;color:#fff;letter-spacing:0;text-transform:none}
.dropdown .dd{display:block;font-family:var(--mono);font-size:10px;color:var(--mut-2);margin-top:4px;letter-spacing:.03em;line-height:1.5}

.nav-cta{display:flex;align-items:center;gap:14px}
.nav-cta .txt{font-size:12.5px;font-weight:500;letter-spacing:.13em;text-transform:uppercase}
.arrow-sq{
  width:34px;height:34px;border-radius:6px;background:var(--lime);
  display:grid;place-items:center;flex:none;
  transition:transform .18s ease,background .18s ease;
}
.arrow-sq svg{width:15px;height:15px;stroke:#0a0f08;stroke-width:2.2;fill:none}
.nav-cta:hover .arrow-sq{transform:translateX(3px);background:var(--lime-hi)}

.burger{display:none;width:40px;height:40px;border-radius:8px;border:1px solid var(--line);place-items:center}
.burger span{display:block;width:17px;height:1.5px;background:#fff;position:relative}
.burger span::before,.burger span::after{content:'';position:absolute;left:0;width:17px;height:1.5px;background:#fff}
.burger span::before{top:-5.5px}.burger span::after{top:5.5px}

/* ---------------- buttons ---------------- */
.btn-outline{
  display:inline-flex;align-items:center;gap:14px;
  padding:15px 26px;border:1px solid rgba(255,255,255,.55);border-radius:6px;
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-outline svg{width:15px;height:15px;stroke:currentColor;stroke-width:2;fill:none}
.btn-outline:hover{background:var(--lime);border-color:var(--lime);color:#0c1408}
.btn-lime{
  display:inline-flex;align-items:center;gap:12px;
  padding:14px 24px;border-radius:6px;background:var(--lime);color:#0c1408;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  transition:background .18s ease,transform .18s ease;
}
.btn-lime:hover{background:var(--lime-hi);transform:translateY(-1px)}
.btn-lime:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;padding:11px 18px;
  border:1px solid var(--line);border-radius:6px;
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#dfe4d8;
  transition:border-color .18s ease,color .18s ease;
}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn-ghost:disabled{opacity:.35;cursor:not-allowed}
.pill{
  display:inline-block;padding:8px 15px;border-radius:5px;background:var(--lime);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;
  text-transform:uppercase;color:#0c1408;
}

/* ---------------- cards / surfaces ---------------- */
.dcard{
  background:var(--card);border:1px solid rgba(255,255,255,.09);
  border-radius:11px;padding:16px 18px;position:relative;
}
.dcard-t{font-family:var(--mono);font-size:11.5px;letter-spacing:.07em;color:#fff;text-transform:uppercase}
.dcard-s{font-family:var(--mono);font-size:9px;letter-spacing:.13em;color:var(--mut-2);text-transform:uppercase;margin-top:3px}
.verified{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 11px;border:1px solid rgba(196,240,74,.45);border-radius:5px;
  font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;color:var(--lime);text-transform:uppercase;
}
.verified svg{width:12px;height:12px;stroke:var(--lime);stroke-width:1.7;fill:none}
.dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 8px var(--lime);animation:pulse 2.1s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------------- section scaffold ---------------- */
/* anchor jumps must clear the fixed bar, or a heading lands underneath it */
section[id],[id].sec,[id].sec-lab{scroll-margin-top:84px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.sect{padding:112px 0;position:relative}
.sect-head{max-width:760px;margin-bottom:56px}
.sect-h{font-weight:700;font-size:clamp(28px,3vw,44px);line-height:1.12;letter-spacing:-.02em}
.sect-p{margin-top:18px;font-size:16px;line-height:1.65;color:#b9c0b1;max-width:62ch}
.rule{height:1px;background:var(--line);border:0}

/* ---------------- footer ---------------- */
.foot{border-top:1px solid var(--line);padding:72px 0 40px;background:#040604}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.foot h4{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--mut-2);margin-bottom:18px}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.foot li a{font-size:14px;color:#c3c9bb;transition:color .16s ease}
.foot li a:hover{color:var(--lime)}
.foot-bot{
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--mut-2);
}

/* ---------------- toast ---------------- */
.toasts{position:fixed;right:20px;bottom:20px;z-index:200;display:flex;flex-direction:column;gap:10px}
.toast{
  padding:13px 18px;border-radius:9px;background:rgba(8,13,7,.96);
  border:1px solid rgba(196,240,74,.35);backdrop-filter:blur(14px);
  font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:#e8ece5;
  box-shadow:0 16px 40px rgba(0,0,0,.5);
  animation:tin .28s cubic-bezier(.2,.9,.3,1);max-width:330px;
}
.toast.warn{border-color:rgba(242,168,60,.5)}
.toast.bad{border-color:rgba(242,96,74,.5)}
@keyframes tin{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------------- reveal on scroll ---------------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .dot{animation:none}
  html{scroll-behavior:auto}
}

/* ---------------- responsive ---------------- */
@media (max-width:1180px){
  :root{--pad:32px;--nav-h:88px}
  .nav-links{gap:24px}
  .navitem>button,.nav-links>a{font-size:11px}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;inset:var(--nav-h) 0 auto 0;height:auto;
    flex-direction:column;align-items:stretch;gap:0;padding:12px var(--pad) 26px;
    background:rgba(5,8,5,.98);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
    display:none;
  }
  .nav-links.open{display:flex}
  .navitem{height:auto;flex-direction:column;align-items:stretch}
  .navitem>button{padding:15px 0;justify-content:space-between;width:100%}
  .dropdown{
    position:static;transform:none;opacity:1;visibility:visible;pointer-events:auto;
    min-width:0;background:none;border:0;box-shadow:none;backdrop-filter:none;
    padding:0 0 8px 12px;display:none;
  }
  .navitem.open .dropdown{display:block;transform:none}
  .burger{display:grid}
  .sect{padding:76px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:520px){
  :root{--pad:20px;--nav-h:76px}
  .nav{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
  .brand-mark{width:34px;height:34px}
  .brand-name{font-size:19px}
  .brand-sub{font-size:7px;letter-spacing:.34em}
  .nav-cta .txt{display:none}
  .foot-grid{grid-template-columns:1fr}
  .toasts{left:14px;right:14px;bottom:14px}
  .toast{max-width:none}
}