/* ============================================================
   QUANTRAA — styles.css
   Palette tuned to the logo's azure/teal gradient.
   ============================================================ */

:root{
  --paper:#F6F6F1;
  --surface:#FFFFFF;
  --ink:#0E1016;
  --ink-soft:#565A66;
  --ink-faint:#8A8E99;
  --line:#E5E5DC;
  --line-strong:#D6D6CC;
  --accent:#0E80D8;
  --accent-ink:#0A5C9E;
  --accent-soft:#E4F3FC;
  --accent-line:#B4DDF4;
  --logo:url("assets/quantraa-logo.jpg");

  --radius:14px;
  --radius-lg:22px;
  --maxw:1180px;
  --pad:clamp(20px,5vw,64px);

  --font-display:"Space Grotesk",system-ui,sans-serif;
  --font-body:"Inter",system-ui,sans-serif;
  --font-mono:"Space Mono","SFMono-Regular",ui-monospace,monospace;

  --ease:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
::selection{background:var(--accent);color:#fff;}

.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent-ink);
  display:inline-flex;
  align-items:center;
  gap:9px;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft);
  animation:blink 2.4s ease-in-out infinite;
}

/* ---------- scroll progress ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,#34E0C8,var(--accent));
  z-index:100;transition:width .1s linear;
}

/* ---------- focus + buttons ---------- */
a:focus-visible, button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:6px;
}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-display);
  font-weight:600;
  font-size:15px;
  padding:13px 22px;
  border-radius:100px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease), background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(14,128,216,.7);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn .arw{transition:transform .2s var(--ease);}
.btn:hover .arw{transform:translate(3px,-1px);}

/* ---------- logo tile ---------- */
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:#000 var(--logo) center/cover no-repeat;
  flex-shrink:0;
  box-shadow:0 0 0 1px rgba(255,255,255,.05),0 3px 12px -3px rgba(14,128,216,.55);
  transition:transform .25s var(--ease), box-shadow .25s ease;
}
.brand:hover .logo-mark{transform:rotate(-4deg) scale(1.06);box-shadow:0 0 0 1px rgba(255,255,255,.06),0 6px 18px -4px rgba(14,128,216,.8);}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(246,246,241,.78);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease, background .25s ease;
}
.nav.scrolled{border-color:var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:21px;letter-spacing:-.02em;}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{font-size:15px;color:var(--ink-soft);transition:color .15s ease;position:relative;}
.nav-links a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:-5px;height:2px;width:0;background:var(--accent);transition:width .25s var(--ease);
}
.nav-links a:not(.btn):hover::after{width:100%;}
.nav-links a:hover{color:var(--ink);}
.nav-links .btn{display:none;}
.nav-right{display:flex;align-items:center;gap:18px;}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;transition:.25s var(--ease);}
.nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav.open .nav-toggle span:nth-child(2){opacity:0;}
.nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- hero ---------- */
.hero{padding-top:clamp(54px,8vw,90px);padding-bottom:clamp(40px,6vw,64px);position:relative;}
.hero::before{
  content:"";position:absolute;z-index:-1;
  top:-6%;left:58%;transform:translateX(-50%);
  width:min(820px,92vw);height:560px;
  background:radial-gradient(ellipse at center, rgba(14,128,216,.13), rgba(52,224,200,.06) 38%, transparent 64%);
  filter:blur(14px);
  animation:drift 20s ease-in-out infinite;
  pointer-events:none;
}
.hero h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(40px,7vw,76px);
  line-height:1.02;
  letter-spacing:-.03em;
  margin:22px 0 0;
  max-width:16ch;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{
  margin:26px 0 0;
  font-size:clamp(17px,2.1vw,20px);
  color:var(--ink-soft);
  max-width:54ch;
}
.hero-cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap;}
.hero-meta{
  margin-top:40px;
  display:flex;gap:26px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;
  color:var(--ink-faint);text-transform:uppercase;
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);}

/* ---------- signature flow ---------- */
.flow{
  margin-top:clamp(44px,6vw,68px);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:clamp(22px,4vw,40px);
  box-shadow:0 30px 60px -40px rgba(14,16,22,.28);
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:clamp(14px,3vw,30px);
  position:relative;
}
.flow-head{
  position:absolute;top:18px;left:clamp(22px,4vw,40px);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);
}
.flow-head::after{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:#16c47f;margin-left:8px;vertical-align:middle;animation:blink 1.6s ease-in-out infinite;}
.flow-col{display:flex;flex-direction:column;gap:12px;padding-top:26px;}
.flow-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);}
.bubble{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:16px 16px 16px 4px;
  padding:14px 16px;
  font-size:15px;
  color:var(--ink);
  max-width:300px;
  line-height:1.45;
}
.bubble .who{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);display:block;margin-bottom:5px;}

.flow-agent{align-items:center;justify-content:center;text-align:center;gap:14px;}
.orb{
  width:74px;height:74px;border-radius:22px;
  background:#000 var(--logo) center/cover no-repeat;
  display:flex;align-items:center;justify-content:center;
  position:relative;
  box-shadow:0 6px 22px -8px rgba(14,128,216,.6);
}
.orb::after{
  content:"";position:absolute;inset:-7px;border-radius:28px;
  border:1.5px solid var(--accent-line);
  animation:pulse 2.6s ease-in-out infinite;
}
.orb-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);}

.flow-out .chips{display:flex;flex-direction:column;gap:8px;}
.chip{
  display:flex;align-items:center;gap:10px;
  border:1px solid var(--line);
  border-radius:11px;
  padding:11px 14px;
  font-size:14.5px;font-weight:500;
  color:var(--ink-faint);
  background:var(--paper);
  transition:all .45s var(--ease);
}
.chip .tick{
  width:18px;height:18px;border-radius:50%;
  border:1.5px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;font-size:11px;color:transparent;transition:all .45s var(--ease);
}
.chip.is-active{
  border-color:var(--accent-line);
  background:var(--accent-soft);
  color:var(--accent-ink);
  transform:translateX(2px);
}
.chip.is-active .tick{background:var(--accent);border-color:var(--accent);color:#fff;}

.wire{position:relative;align-self:center;height:2px;width:100%;min-width:40px;background:var(--line-strong);}
.wire .token{
  position:absolute;top:50%;left:0;transform:translateY(-50%);
  width:9px;height:9px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft);
  animation:travel 2.6s linear infinite;
}
.wire.delay .token{animation-delay:1.3s;}

/* ---------- marquee ---------- */
.ticker{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  overflow:hidden;
  padding:16px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.ticker-track{
  display:flex;align-items:center;gap:26px;width:max-content;
  animation:marquee 26s linear infinite;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);
}
.ticker:hover .ticker-track{animation-play-state:paused;}
.ticker-track i{color:var(--accent);font-style:normal;font-size:10px;}

/* ---------- section shell ---------- */
.section{padding:clamp(64px,9vw,118px) 0;}
.section-tight{padding-top:0;}
.section-head{max-width:60ch;margin-bottom:clamp(40px,5vw,60px);}
.section-head h2{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(30px,4.6vw,50px);line-height:1.05;letter-spacing:-.025em;
  margin:16px 0 0;
}
.section-head p{margin:18px 0 0;color:var(--ink-soft);font-size:clamp(16px,2vw,19px);max-width:52ch;}

/* ---------- services ---------- */
.svc{border-top:1px solid var(--line);}
.svc-row{
  display:grid;
  grid-template-columns:90px 1.1fr 1fr;
  gap:clamp(18px,4vw,48px);
  padding:clamp(34px,5vw,52px) 0;
  border-bottom:1px solid var(--line);
  align-items:start;
  transition:background .3s ease;
}
.svc-row:hover{background:linear-gradient(90deg,rgba(228,243,252,.5),transparent 70%);}
.svc-num{font-family:var(--font-mono);font-size:14px;color:var(--accent);font-weight:700;letter-spacing:.05em;transition:transform .3s var(--ease);}
.svc-row:hover .svc-num{transform:translateX(4px);}
.svc-main h3{font-family:var(--font-display);font-weight:600;font-size:clamp(23px,3vw,32px);letter-spacing:-.02em;margin:0 0 14px;line-height:1.1;}
.svc-main p{margin:0;color:var(--ink-soft);font-size:16.5px;max-width:42ch;}
.svc-feats{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:13px;}
.svc-feats li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--ink);}
.svc-feats .mk{
  flex-shrink:0;width:22px;height:22px;border-radius:7px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;color:var(--accent-ink);
  font-size:12px;margin-top:1px;transition:transform .25s var(--ease);
}
.svc-feats li:hover .mk{transform:translateX(3px);}
.svc-channels{margin-top:18px;display:flex;gap:8px;flex-wrap:wrap;}
.pill{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);
  border:1px solid var(--line);border-radius:100px;padding:5px 11px;background:var(--surface);transition:border-color .2s ease,color .2s ease;}
.pill:hover{border-color:var(--accent-line);color:var(--accent-ink);}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2.5vw,28px);}
.step{position:relative;padding-top:26px;}
.step::before{content:"";position:absolute;top:0;left:0;width:100%;height:2px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .7s var(--ease);transition-delay:var(--d,0s);}
.step.in::before{transform:scaleX(1);}
.step .n{font-family:var(--font-mono);font-size:12px;color:var(--ink-faint);letter-spacing:.1em;}
.step h4{font-family:var(--font-display);font-weight:600;font-size:19px;margin:14px 0 8px;letter-spacing:-.01em;}
.step p{margin:0;font-size:14.5px;color:var(--ink-soft);}

/* ---------- why grid ---------- */
.why{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;}
.why-cell{background:var(--surface);padding:clamp(26px,3.5vw,40px);transition:background .3s ease,transform .3s var(--ease);}
.why-cell:hover{background:var(--accent-soft);}
.why-cell .ic{width:34px;height:34px;border-radius:10px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;color:var(--accent-ink);margin-bottom:18px;transition:transform .3s var(--ease);}
.why-cell:hover .ic{transform:translateY(-3px) scale(1.08);}
.why-cell h4{font-family:var(--font-display);font-weight:600;font-size:20px;margin:0 0 9px;letter-spacing:-.01em;}
.why-cell p{margin:0;color:var(--ink-soft);font-size:15.5px;}

/* ---------- cta band ---------- */
.cta{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:clamp(44px,7vw,80px) var(--pad);text-align:center;position:relative;overflow:hidden;}
.cta::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(16,150,220,.55),transparent 62%);top:-220px;right:-140px;filter:blur(8px);animation:breathe 9s ease-in-out infinite;}
.cta::after{content:"";position:absolute;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(52,224,200,.28),transparent 60%);bottom:-200px;left:-120px;filter:blur(10px);animation:breathe 11s ease-in-out infinite reverse;}
.cta-inner{position:relative;z-index:1;}
.cta h2{font-family:var(--font-display);font-weight:600;font-size:clamp(30px,5vw,52px);letter-spacing:-.025em;margin:14px auto 0;max-width:18ch;line-height:1.05;}
.cta p{color:rgba(255,255,255,.7);margin:18px auto 0;max-width:46ch;font-size:17px;}
.cta .btn-primary{background:#fff;color:var(--ink);margin-top:32px;}
.cta .btn-primary:hover{background:var(--accent);color:#fff;}
.cta .eyebrow{color:#fff;}
.cta .eyebrow::before{box-shadow:0 0 0 4px rgba(255,255,255,.14);}

/* ---------- footer ---------- */
.foot{padding:60px 0 44px;border-top:1px solid var(--line);}
.foot-top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start;}
.foot-brand{max-width:34ch;}
.foot-brand p{color:var(--ink-soft);font-size:15px;margin:14px 0 0;}
.foot-cols{display:flex;gap:clamp(40px,8vw,90px);flex-wrap:wrap;}
.foot-col h5{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 16px;}
.foot-col a{display:block;color:var(--ink-soft);font-size:15px;margin-bottom:11px;transition:color .15s,transform .15s var(--ease);}
.foot-col a:hover{color:var(--ink);transform:translateX(3px);}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:50px;padding-top:24px;border-top:1px solid var(--line);font-size:13.5px;color:var(--ink-faint);}
.foot-bottom .dom{font-family:var(--font-mono);}

/* ============================================================
   ANIMATIONS
   ============================================================ */

/* load sequence (above the fold) */
.rise{opacity:0;transform:translateY(18px);animation:rise .85s var(--ease) forwards;animation-delay:var(--d,0s);}
.rise-blur{filter:blur(8px);animation:riseBlur .9s var(--ease) forwards;animation-delay:var(--d,0s);}

/* scroll reveal (below the fold) */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0s);}
.reveal.in{opacity:1;transform:none;}

@keyframes rise{to{opacity:1;transform:none;}}
@keyframes riseBlur{to{opacity:1;transform:none;filter:blur(0);}}
@keyframes drift{0%,100%{transform:translateX(-50%) translateY(0) scale(1);}50%{transform:translateX(-46%) translateY(18px) scale(1.08);}}
@keyframes travel{0%{left:0;opacity:0;}10%{opacity:1;}90%{opacity:1;}100%{left:100%;opacity:0;}}
@keyframes pulse{0%,100%{opacity:.9;transform:scale(1);}50%{opacity:.35;transform:scale(1.06);}}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.3;}}
@keyframes breathe{0%,100%{transform:scale(1);opacity:.85;}50%{transform:scale(1.12);opacity:1;}}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .svc-row{grid-template-columns:60px 1fr;}
  .svc-side{grid-column:2;}
  .steps{grid-template-columns:repeat(2,1fr);gap:30px 24px;}
}
@media(max-width:760px){
  .nav-links,.nav-right .btn{display:none;}
  .nav-toggle{display:block;}
  .nav.open .nav-links{
    display:flex;position:absolute;top:70px;left:0;right:0;flex-direction:column;align-items:flex-start;
    gap:4px;background:var(--paper);border-bottom:1px solid var(--line);padding:14px var(--pad) 22px;
    animation:rise .35s var(--ease) forwards;
  }
  .nav.open .nav-links a{padding:10px 0;font-size:17px;width:100%;}
  .nav.open .nav-links .btn{display:inline-flex;margin-top:8px;}
  .flow{grid-template-columns:1fr;text-align:left;}
  .flow-col{padding-top:0;}
  .flow-head{position:static;margin-bottom:8px;}
  .wire{width:2px;height:34px;min-width:0;margin:2px 0 2px 36px;}
  .wire .token{left:50%;top:0;transform:translateX(-50%);animation:travelv 2.6s linear infinite;}
  .flow-agent{flex-direction:row;justify-content:flex-start;text-align:left;gap:14px;}
}
@keyframes travelv{0%{top:0;opacity:0;}10%{opacity:1;}90%{opacity:1;}100%{top:100%;opacity:0;}}

@media(max-width:620px){
  .why{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
}

/* ---------- reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .rise,.rise-blur,.reveal{opacity:1!important;transform:none!important;filter:none!important;}
  .step::before{transform:scaleX(1)!important;}
}