/* ============================================================
   Vertex - design study in the Vercel visual language
   ============================================================ */

:root{
  --bg:#000;
  --fg:#ededed;
  --g100:#0a0a0a;
  --g200:#111;
  --g300:#1a1a1a;
  --g400:#242424;
  --g500:#2e2e2e;
  --g600:#454545;
  --g800:#8f8f8f;
  --g900:#a1a1a1;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.16);
  --accent:#6aa9ff;

  --page:1200px;
  --margin:24px;
  --header-h:64px;

  --sans:"Geist","Inter",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"Geist Mono",ui-monospace,"SF Mono","Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;

  --ease:cubic-bezier(.22,1,.36,1);
}

html[data-theme="light"]{
  --bg:#fff;
  --fg:#0a0a0a;
  --g100:#fafafa;
  --g200:#f2f2f2;
  --g300:#ebebeb;
  --g400:#e0e0e0;
  --g500:#d4d4d4;
  --g600:#b3b3b3;
  --g800:#6f6f6f;
  --g900:#575757;
  --line:rgba(0,0,0,.10);
  --line-2:rgba(0,0,0,.16);
  --accent:#0060df;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{overflow-x:clip}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  transition:background-color .6s var(--ease), color .6s var(--ease);
}
h1,h2,h3{margin:0;font-weight:500;letter-spacing:-.02em;line-height:1.08}
p{margin:0}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.mono{font-family:var(--mono);font-size:14px;letter-spacing:-.01em}

.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--fg);color:var(--bg);padding:10px 16px;border-radius:6px}
.skip:focus{left:16px;top:16px}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--page);margin-inline:auto;padding-inline:var(--margin)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:32px;padding:0 12px;border-radius:6px;
  font-size:14px;font-weight:500;white-space:nowrap;
  border:1px solid transparent;
  transition:background-color .25s var(--ease),color .25s var(--ease),
             border-color .25s var(--ease),transform .25s var(--ease),opacity .25s var(--ease);
}
.btn:active{transform:scale(.97)}
.btn-lg{height:44px;padding:0 20px;font-size:15px;border-radius:8px}
.btn-light{background:var(--fg);color:var(--bg)}
.btn-light:hover{opacity:.86}
.btn-outline{border-color:var(--line-2);color:var(--fg)}
.btn-outline:hover{border-color:var(--fg);background:color-mix(in srgb,var(--fg) 6%,transparent)}
.btn-ghost{color:var(--g900)}
.btn-ghost:hover{color:var(--fg)}

.link{
  font-size:14px;color:var(--g900);
  display:inline-flex;align-items:center;gap:6px;
  transition:color .25s var(--ease),gap .25s var(--ease);
}
.link::after{content:"→";transition:transform .3s var(--ease)}
.link:hover{color:var(--fg)}
.link:hover::after{transform:translateX(3px)}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  height:var(--header-h);
  border-bottom:1px solid transparent;
  background:color-mix(in srgb,var(--bg) 72%,transparent);
  backdrop-filter:saturate(180%) blur(16px);
  transition:border-color .5s var(--ease),background-color .5s var(--ease);
}
.nav.scrolled{border-bottom-color:var(--line)}
.nav-inner{
  max-width:var(--page);margin-inline:auto;padding-inline:var(--margin);
  height:var(--header-h);display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;letter-spacing:-.02em;font-size:17px}
.mark{transition:transform .6s var(--ease)}
.brand:hover .mark{transform:translateY(-2px) rotate(-6deg)}
.nav-links{display:flex;align-items:center;gap:4px;flex:1}
.navlink{
  display:inline-flex;align-items:center;gap:4px;
  background:none;border:0;cursor:pointer;font:inherit;
  font-size:14px;color:var(--g900);padding:6px 10px;border-radius:6px;
  transition:color .25s var(--ease),background-color .25s var(--ease);
}
.navlink:hover,.navlink[aria-expanded="true"]{color:var(--fg);background:color-mix(in srgb,var(--fg) 6%,transparent)}
.navlink svg{transition:transform .35s var(--ease)}
.navlink[aria-expanded="true"] svg{transform:rotate(180deg)}
.nav-actions{display:flex;align-items:center;gap:8px}

.megamenu{
  position:absolute;left:0;right:0;top:var(--header-h);
  border-block:1px solid var(--line);
  background:color-mix(in srgb,var(--bg) 92%,transparent);
  backdrop-filter:saturate(180%) blur(20px);
  opacity:0;transform:translateY(-8px);pointer-events:none;
  transition:opacity .35s var(--ease),transform .45s var(--ease);
}
.megamenu.open{opacity:1;transform:none;pointer-events:auto}
.mega-panel{
  max-width:var(--page);margin-inline:auto;padding:28px var(--margin) 34px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:36px;
}
.mega-label{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--g800);margin-bottom:14px}
.mega-col a{display:block;padding:9px 10px;margin-inline:-10px;border-radius:8px;transition:background-color .25s var(--ease)}
.mega-col a:hover{background:color-mix(in srgb,var(--fg) 6%,transparent)}
.mega-col a b{display:block;font-weight:500;font-size:14px}
.mega-col a span{display:block;font-size:13px;color:var(--g900);margin-top:2px}

.menu-toggle{display:none;width:36px;height:36px;background:none;border:0;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.menu-toggle span{display:block;width:18px;height:1.5px;background:var(--fg);transition:transform .4s var(--ease),opacity .3s var(--ease)}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.25px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.25px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:min(calc(100svh - var(--header-h)),980px);
  display:flex;align-items:center;
  user-select:none;overflow:hidden;
}
.hero-wrap{position:relative;z-index:2;width:100%}
.hero-stage{
  position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden;
}
#tri{
  position:absolute;left:50%;top:50%;
  width:min(120vw,900px);
  height:min(88vh,620px);
  transform:translate(-50%,-50%) translate(15%,8px);
  opacity:0;
  transition:opacity 1.6s linear;
}
#tri.ready{opacity:1}
.grain{
  position:absolute;inset:-10%;
  background-image:var(--grain);
  background-size:110px 110px;
  opacity:.07;mix-blend-mode:overlay;pointer-events:none;
}
html[data-theme="light"] .grain{opacity:.05;mix-blend-mode:multiply}

/* the copy sits over the glow, so give it a soft scrim on wide screens */
.hero-stage::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(100deg,
    color-mix(in srgb,var(--bg) 92%,transparent) 0%,
    color-mix(in srgb,var(--bg) 62%,transparent) 26%,
    transparent 46%);
}

/* mirrors the canvas box so the label always sits under the triangle base */
.drop-label{
  position:absolute;left:50%;top:50%;z-index:3;
  width:min(120vw,900px);height:min(88vh,620px);
  transform:translate(-50%,-50%) translate(15%,8px);
  display:grid;align-content:end;justify-items:center;
}
.drop-label-in{
  display:grid;white-space:nowrap;text-align:center;
  margin:0;transform:translateY(38px);
  font-size:22px;letter-spacing:-.02em;color:var(--fg);
  text-shadow:0 2px 24px var(--bg),0 0 8px var(--bg);
}
.drop-label span{grid-area:1/1;opacity:0;transition:opacity .45s var(--ease)}
.hero[data-drop="over"]    .drop-label span[data-state="over"],
.hero[data-drop="loading"] .drop-label span[data-state="loading"],
.hero[data-drop="done"]    .drop-label span[data-state="done"]{opacity:1}

.hero-copy{
  position:relative;z-index:2;
  max-width:460px;
  display:flex;flex-direction:column;gap:28px;
  transition:opacity .5s var(--ease),transform .6s var(--ease);
}
.hero:not([data-drop="idle"]) .hero-copy{opacity:0;transform:translateY(-6px);pointer-events:none}
.hero h1{font-size:clamp(44px,6.4vw,64px);font-weight:400;letter-spacing:-.045em;text-wrap:balance}
.hero-cta{display:flex;flex-wrap:wrap;gap:10px}
.hero-sub{
  color:var(--g900);max-width:420px;line-height:1.55;
  min-height:3.2em;
}
.hero-sub .rot{display:block;transition:opacity .5s var(--ease),transform .5s var(--ease)}
.hero-sub .rot.out{opacity:0;transform:translateY(-6px)}

.hero-hint{
  position:absolute;bottom:-108px;left:0;
  color:var(--g800);font-size:12px;letter-spacing:.04em;
  transition:opacity .5s var(--ease);
}
.hero:not([data-drop="idle"]) .hero-hint{opacity:0}

/* ---------- bands ---------- */
.band{padding-block:120px;position:relative}
.band.tight{padding-block:72px}
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.c-4{grid-column:span 4}
.c-5{grid-column:span 5}
.c-7{grid-column:span 7}
.c-8{grid-column:span 8}

.statement{align-items:end}
.statement h2{font-size:clamp(30px,4.4vw,52px);font-weight:400;letter-spacing:-.035em;text-wrap:balance}
.statement-note p{color:var(--g900);font-size:15px;line-height:1.6}

.quote{font-size:clamp(18px,2.2vw,24px);letter-spacing:-.02em;color:var(--fg);max-width:640px;text-wrap:balance}
.logo-rail{
  display:flex;flex-wrap:wrap;gap:14px 44px;margin-top:40px;
  font-family:var(--mono);font-size:15px;color:var(--g800);
}
.logo-rail span{transition:color .35s var(--ease),transform .35s var(--ease)}
.logo-rail span:hover{color:var(--fg);transform:translateY(-2px)}

.eyebrow{color:var(--g800);text-transform:uppercase;letter-spacing:.08em;font-size:12px;margin-bottom:28px}

/* ---------- feature cards ---------- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
  background:var(--g100);
  padding:0 0 26px;
  transition:border-color .45s var(--ease),transform .5s var(--ease),background-color .45s var(--ease);
}
.card:hover{border-color:var(--line-2);transform:translateY(-3px)}
.card h3{font-size:19px;padding:0 26px;margin-bottom:10px}
.card p{padding:0 26px;color:var(--g900);font-size:14.5px;line-height:1.6;margin-bottom:16px}
.card .link{margin-left:26px}
.card-art{
  height:190px;margin-bottom:24px;
  border-bottom:1px solid var(--line);
  display:grid;place-items:center;overflow:hidden;position:relative;
  background:
    radial-gradient(120% 100% at 50% 0%,color-mix(in srgb,var(--fg) 5%,transparent),transparent 70%),
    var(--g200);
}
.card-art svg{width:240px;height:140px}

.art-orchestration .wires path{fill:none;stroke:var(--g500);stroke-width:1.25}
.art-orchestration .node{fill:var(--fg)}
.art-orchestration .node{animation:pulseNode 3.2s var(--ease) infinite}
.art-orchestration .n2{animation-delay:.4s}
.art-orchestration .n3{animation-delay:.8s}
.art-orchestration .n4{animation-delay:1.2s}
@keyframes pulseNode{0%,70%,100%{opacity:.35;r:4}20%{opacity:1;r:5.5}}

.term{padding:18px 20px;width:100%;font-size:12.5px;line-height:1.9;color:var(--g900)}
.term .t-line{display:block}
.term i{color:var(--g800);font-style:normal;margin-right:8px}
.term .dim{color:var(--g800)}
.term .ok{color:var(--fg)}
.cursor{display:inline-block;width:7px;height:14px;background:var(--fg);vertical-align:-2px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{0%,50%{opacity:1}50.01%,100%{opacity:0}}

.art-gateway .hub{fill:none;stroke:var(--fg);stroke-width:1.25}
.art-gateway .rays path{stroke:var(--g500);stroke-width:1.25;stroke-dasharray:4 6;animation:flow 3s linear infinite}
.art-gateway .rays path:nth-child(2){animation-delay:.3s}
.art-gateway .rays path:nth-child(3){animation-delay:.6s}
.art-gateway .rays path:nth-child(4){animation-delay:.9s}
.art-gateway .rays path:nth-child(5){animation-delay:.2s}
.art-gateway .rays path:nth-child(6){animation-delay:.5s}
.art-gateway .rays path:nth-child(7){animation-delay:.8s}
@keyframes flow{to{stroke-dashoffset:-40}}

.bars{display:flex;align-items:flex-end;gap:7px;height:110px}
.bars i{
  width:12px;border-radius:2px;background:var(--g500);
  height:calc(var(--h) * 110px);
  transform-origin:bottom;
  animation:breathe 3.6s var(--ease) infinite;
}
.bars i:nth-child(odd){background:var(--g600)}
.bars i:nth-child(3n){animation-delay:.5s}
.bars i:nth-child(3n+1){animation-delay:1.1s}
@keyframes breathe{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.55)}}

/* ---------- workflow ---------- */
.flow{align-items:center;gap:48px 20px}
.flow-copy h2{font-size:clamp(28px,3.4vw,40px);font-weight:400;margin-bottom:16px}
.flow-copy > p{color:var(--g900);line-height:1.6;font-size:15px}
.ticks{list-style:none;margin:28px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}
.ticks li{position:relative;padding-left:26px;color:var(--g900);font-size:14.5px}
.ticks li::before{
  content:"";position:absolute;left:0;top:.45em;width:12px;height:7px;
  border-left:1.5px solid var(--fg);border-bottom:1.5px solid var(--fg);
  transform:rotate(-45deg);
}
.panel{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--g100)}
.panel-bar{
  display:flex;align-items:center;gap:12px;
  padding:11px 16px;border-bottom:1px solid var(--line);
  color:var(--g800);font-size:12.5px;background:var(--g200);
}
.dots{display:flex;gap:6px}
.dots i{width:9px;height:9px;border-radius:50%;background:var(--g500)}
.panel-body{
  margin:0;padding:22px;min-height:280px;
  font-size:12.5px;line-height:1.95;color:var(--g900);
  white-space:pre-wrap;
}
.panel-body b{color:var(--fg);font-weight:500}
.panel-body em{color:var(--accent);font-style:normal}

/* ---------- stats ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;border-top:1px solid var(--line);padding-top:44px}
.stat b{display:block;font-size:clamp(34px,4.6vw,54px);font-weight:400;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.stat span{display:block;color:var(--g800);font-family:var(--mono);font-size:13px;margin-top:8px}

/* ---------- cta ---------- */
.cta{
  padding-block:140px;text-align:center;
  border-top:1px solid var(--line);
  background:radial-gradient(70% 120% at 50% 0%,color-mix(in srgb,var(--fg) 7%,transparent),transparent 70%);
}
.cta-inner{display:flex;flex-direction:column;align-items:center;gap:20px}
.cta h2{font-size:clamp(32px,4.6vw,52px);font-weight:400;letter-spacing:-.04em}
.cta p{color:var(--g900);max-width:420px;text-wrap:balance}
.mark.big{animation:float 6s var(--ease) infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding-block:60px 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px}
.footer-brand{display:flex;flex-direction:column;gap:16px}
.footer-brand p{color:var(--g800);font-size:12.5px;max-width:220px;line-height:1.7}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--g900);transition:color .25s var(--ease)}
.footer-col a:hover{color:var(--fg)}
.footer-base{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  color:var(--g800);font-size:12.5px;
}
.theme-toggle{
  width:34px;height:34px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:8px;background:none;color:var(--g900);cursor:pointer;
  transition:color .3s var(--ease),border-color .3s var(--ease),transform .5s var(--ease);
}
.theme-toggle:hover{color:var(--fg);border-color:var(--line-2);transform:rotate(35deg)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .btn-ghost,.nav-actions .btn-light{display:none}
  .nav-links.open{
    display:flex;flex-direction:column;align-items:flex-start;
    position:absolute;top:var(--header-h);left:0;right:0;
    padding:16px var(--margin) 28px;gap:2px;
    border-bottom:1px solid var(--line);
    background:color-mix(in srgb,var(--bg) 94%,transparent);
    backdrop-filter:blur(20px);
  }
  .nav-links.open .navlink{font-size:16px;padding:10px 0}
  .c-4,.c-5,.c-7,.c-8{grid-column:1/-1}
  .flow{gap:40px}
  .statement{gap:24px}
}
@media (max-width:820px){
  .cards{grid-template-columns:1fr}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:36px 20px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px 24px}
  .footer-brand{grid-column:1/-1}
  .band{padding-block:88px}
  .hero{align-items:flex-end;padding-bottom:120px;min-height:min(100svh,880px)}
  .hero-copy{max-width:none;align-items:center;text-align:center}
  .hero-cta{justify-content:center}
  .hero-sub{margin-inline:auto}
  .hero-hint{left:0;right:0;text-align:center;bottom:-72px}
  #tri{
    transform:translate(-50%,-50%) translateY(-88px);
    width:min(132vw,660px);height:min(56vh,460px);
  }
  .hero-stage::after{
    background:linear-gradient(180deg,transparent 0%,transparent 46%,
      color-mix(in srgb,var(--bg) 50%,transparent) 62%,
      color-mix(in srgb,var(--bg) 90%,transparent) 78%);
  }
  .drop-label{
    transform:translate(-50%,-50%) translateY(-88px);
    width:min(132vw,660px);height:min(56vh,460px);
  }
  .drop-label-in{font-size:19px;transform:translateY(30px)}
}
@media (max-width:520px){
  :root{--margin:18px}
  .stat-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}