/* Dhiva Labs — Quiet Instrumentation
   Palette, type and rules per the brand kit. */

@font-face{font-family:"Jura";src:url("/assets/fonts/Jura-Light.woff2") format("woff2");font-weight:300;font-display:swap}
@font-face{font-family:"Geist Mono";src:url("/assets/fonts/GeistMono-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Geist Mono";src:url("/assets/fonts/GeistMono-Bold.woff2") format("woff2");font-weight:700;font-display:swap}

:root{
  --ground:#0D1117;
  --ground-2:#111823;
  --panel:#0F1620;
  --bone:#EAE7E0;
  --ash:#8691A0;
  --dim:#586271;
  --line:#1E2530;
  --line-2:#2E3642;
  --teal:#35D6B0;
  --blue:#48A0FF;
  --wrap:1200px;
  --mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --display:"Jura",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ground);color:var(--ash);
  font-family:var(--body);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:var(--bone);text-decoration:none}
h1,h2,h3{color:var(--bone);font-weight:400;letter-spacing:-.01em;margin:0}
p{margin:0}

.wrap{width:min(100% - 44px,var(--wrap));margin-inline:auto}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:100;background:var(--teal);color:#08111a;padding:10px 16px;border-radius:4px}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px}

.mark{width:26px;height:26px;color:var(--bone);flex:none}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--ground) 86%,transparent);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.brand{display:flex;align-items:center;gap:12px}
.brand span{font-family:var(--display);font-size:16px;letter-spacing:.22em;color:var(--bone)}
.links{display:flex;align-items:center;gap:34px}
.links a{
  font-family:var(--mono);font-size:12px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ash);transition:color .18s;
}
.links a:hover,.links a.on{color:var(--bone)}
.links .cta{
  color:var(--teal);border:1px solid color-mix(in srgb,var(--teal) 40%,transparent);
  padding:9px 18px;border-radius:2px;transition:background .18s,color .18s;
}
.links .cta:hover{background:var(--teal);color:#08111a}
.burger{display:none;background:none;border:0;cursor:pointer;padding:10px;width:44px;height:44px}
.burger span{display:block;height:1px;background:var(--bone);margin:5px 0;transition:transform .25s,opacity .25s}
.burger[aria-expanded="true"] span:first-child{transform:translateY(3px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-3px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{padding:clamp(64px,10vw,132px) 0 0;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 55% at 62% 30%,rgba(53,214,176,.06),transparent 70%);
}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1}
.eyebrow{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--dim);margin-bottom:26px;
}
.eyebrow::before{content:"";display:inline-block;width:26px;height:1px;background:var(--teal);vertical-align:middle;margin-right:14px}
h1{font-family:var(--display);font-size:clamp(42px,6.2vw,82px);line-height:1.06;letter-spacing:.01em}
.lede{margin-top:26px;max-width:52ch;font-size:17px;line-height:1.75}
.btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.btn{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  padding:14px 26px;border:1px solid var(--line-2);border-radius:2px;color:var(--bone);
  transition:border-color .2s,background .2s,color .2s;
}
.btn:hover{border-color:var(--ash)}
.btn-primary{background:var(--teal);border-color:var(--teal);color:#08111a}
.btn-primary:hover{background:transparent;color:var(--teal);border-color:var(--teal)}
.hero-fig{color:var(--bone)}
.aperture{width:100%;height:auto}
@media (prefers-reduced-motion:no-preference){
  .rings{transform-origin:50% 50%;animation:spin 90s linear infinite}
  @keyframes spin{to{transform:rotate(360deg)}}
}

.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin:clamp(64px,9vw,110px) 0 0;
  background:var(--line);border:1px solid var(--line);
}
.stats>div{background:var(--ground);padding:26px 24px}
.stats dt{font-family:var(--display);font-size:30px;color:var(--bone);letter-spacing:.02em}
.stats dd{margin:8px 0 0;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);line-height:1.6}

/* ---------- sections ---------- */
section[id]{scroll-margin-top:92px}
.sec{padding:clamp(76px,10vw,128px) 0;border-top:1px solid var(--line)}
.sec.alt{background:var(--ground-2)}
.sec-num{
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;color:var(--teal);
  display:block;margin-bottom:18px;
}
.sec-head{max-width:60ch;margin-bottom:clamp(40px,5vw,64px)}
.sec-head h2{font-family:var(--display);font-size:clamp(28px,3.6vw,44px);line-height:1.15}
.sec-head p{margin-top:16px}
.sec-foot{margin-top:44px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.sec-foot a{color:var(--teal)}

/* apps */
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(288px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.card{background:var(--ground);padding:30px 28px 26px;position:relative;transition:background .22s}
.card:hover{background:var(--panel)}
.card-idx{font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.16em;margin-bottom:16px}
.card h3{font-family:var(--display);font-size:22px;letter-spacing:.02em}
.card p{margin-top:10px;font-size:14.5px;line-height:1.65;min-height:3.3em}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
.tag{
  font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--dim);border:1px solid var(--line-2);padding:3px 9px;border-radius:2px;
}
.card-links{display:flex;gap:20px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.card-links a{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ash);transition:color .18s}
.card-links a:first-child{color:var(--teal)}
.card-links a:hover{color:var(--bone)}

/* services */
.grid-svc{display:grid;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.svc{background:var(--ground-2);padding:34px 30px;display:flex;gap:22px}
.svc-num{font-family:var(--mono);font-size:11px;color:var(--teal);letter-spacing:.16em;padding-top:5px;flex:none}
.svc h3{font-family:var(--display);font-size:21px;line-height:1.3}
.svc p{margin-top:10px;font-size:14.5px}
.svc ul{margin:18px 0 0;padding:0;list-style:none}
.svc li{
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--dim);
  padding:7px 0 7px 18px;position:relative;border-top:1px solid var(--line);
}
.svc li::before{content:"";position:absolute;left:0;top:16px;width:6px;height:1px;background:var(--line-2)}

/* research */
.registry{border:1px solid var(--line)}
.reg{
  display:grid;grid-template-columns:76px 1fr 250px;gap:26px;align-items:start;
  padding:26px 28px;border-bottom:1px solid var(--line);transition:background .22s;
}
.reg:last-child{border-bottom:0}
.reg:hover{background:var(--panel)}
.reg-num{font-family:var(--mono);font-size:11.5px;color:var(--teal);letter-spacing:.14em;padding-top:4px}
.reg h3{font-family:var(--display);font-size:20px;line-height:1.3}
.reg p{margin-top:8px;font-size:14.5px}
.reg-stack{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--dim);padding-top:6px;line-height:1.8}

/* about */
.about{display:grid;grid-template-columns:1.35fr .65fr;gap:56px;align-items:start}
.about h2{font-family:var(--display);font-size:clamp(28px,3.8vw,46px);line-height:1.12}
.quote{
  margin-top:26px;font-family:var(--display);font-size:clamp(18px,2vw,23px);line-height:1.55;
  color:var(--bone);border-left:1px solid var(--teal);padding-left:22px;
}
.about-copy>p:last-of-type{margin-top:22px;max-width:58ch}
.founder{margin-top:38px;padding-top:22px;border-top:1px solid var(--line)}
.founder-name{font-family:var(--display);font-size:19px;color:var(--bone);letter-spacing:.03em}
.founder-role{font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;color:var(--dim);margin-top:6px}
.creds{list-style:none;margin:0;padding:0;border:1px solid var(--line)}
.creds li{
  padding:20px 22px;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);
}
.creds li:last-child{border-bottom:0}
.creds span{display:block;font-family:var(--display);font-size:26px;color:var(--bone);letter-spacing:.02em;margin-bottom:6px;text-transform:none}

/* contact */
.contact{text-align:center;border-top:1px solid var(--line)}
.contact .sec-num{margin-bottom:20px}
.contact h2{font-family:var(--display);font-size:clamp(32px,5vw,60px)}
.contact .lede{margin:22px auto 0;max-width:56ch}
.mailto{
  display:inline-block;margin-top:38px;font-family:var(--display);
  font-size:clamp(19px,2.6vw,30px);color:var(--teal);letter-spacing:.02em;
  border-bottom:1px solid color-mix(in srgb,var(--teal) 35%,transparent);padding-bottom:6px;
}
.mailto:hover{border-bottom-color:var(--teal)}
.loc{margin-top:26px;font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}

/* footer */
.foot{border-top:1px solid var(--line);padding:48px 0 30px}
.foot-in{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.foot-brand{display:flex;align-items:center;gap:14px}
.foot-name{font-family:var(--display);font-size:15px;letter-spacing:.2em;color:var(--bone)}
.foot-tag{font-family:var(--mono);font-size:11px;letter-spacing:.09em;color:var(--dim);margin-top:3px}
.foot-links{display:flex;flex-wrap:wrap;gap:26px}
.foot-links a{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ash)}
.foot-links a:hover{color:var(--bone)}
.foot-legal{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:34px;padding-top:22px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);
}

/* reveal */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
}

/* legal pages */
.legal{padding:clamp(56px,8vw,96px) 0}
.legal h1{font-family:var(--display);font-size:clamp(30px,4.4vw,48px)}
.legal h2{font-family:var(--display);font-size:22px;margin-top:44px}
.legal p,.legal li{margin-top:14px;max-width:74ch}
.legal ul{padding-left:20px}
.legal .updated{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-top:16px}
.legal a{color:var(--teal)}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-in{grid-template-columns:1fr;gap:40px}
  .hero-fig{order:-1;max-width:340px;margin-inline:auto}
  .about{grid-template-columns:1fr;gap:40px}
  .reg{grid-template-columns:60px 1fr;gap:18px}
  .reg-stack{grid-column:2;padding-top:0}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .burger{display:block}
  .links{
    position:fixed;inset:70px 0 auto;flex-direction:column;align-items:stretch;gap:0;
    background:var(--ground);border-bottom:1px solid var(--line);
    padding:8px 22px 24px;transform:translateY(-8px);opacity:0;pointer-events:none;transition:.22s;
  }
  .links.open{transform:none;opacity:1;pointer-events:auto}
  .links a{padding:15px 0;border-bottom:1px solid var(--line);font-size:13px}
  .links .cta{margin-top:18px;text-align:center;border-bottom:1px solid color-mix(in srgb,var(--teal) 40%,transparent)}
  .card p{min-height:0}
  .svc{flex-direction:column;gap:12px}
}