/* ===========================================================
   ELEVARTS BRAIN — Explainer site
   Brand: dark #131120 · purple #645faa · magenta #862d91
   Fonts: Gotham (display) · Euclid Flex (UI)
   =========================================================== */

/* ---------- Fonts ---------- */
@font-face{font-family:"Euclid";src:url("../fonts/EuclidFlex-Thin.otf") format("opentype");font-weight:200;font-display:swap}
@font-face{font-family:"Euclid";src:url("../fonts/EuclidFlex-Light.otf") format("opentype");font-weight:300;font-display:swap}
@font-face{font-family:"Euclid";src:url("../fonts/EuclidFlex-Regular.otf") format("opentype");font-weight:400;font-display:swap}
@font-face{font-family:"Euclid";src:url("../fonts/EuclidFlex-Medium.otf") format("opentype");font-weight:500;font-display:swap}
@font-face{font-family:"Euclid";src:url("../fonts/EuclidFlex-Semibold.otf") format("opentype");font-weight:600;font-display:swap}
@font-face{font-family:"Euclid";src:url("../fonts/EuclidFlex-Bold.otf") format("opentype");font-weight:700;font-display:swap}

/* ---------- Tokens ---------- */
:root{
  --dark:#131120; --dark-2:#1b1830; --dark-3:#241f3e;
  --ink:#ECEAF6; --muted:#9a93c0; --faint:#6b648f;
  --purple:#645faa; --magenta:#862d91; --periwinkle:#626AB1;
  --lightblue:#6BA3D7; --red:#D6413A; --pink:#DE607D; --coral:#E17B62; --peach:#EEA172;
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.14);
  --grad-hot:linear-gradient(120deg,#D6413A,#862d91 45%,#7A4294 65%,#6BA3D7);
  --grad-cool:linear-gradient(135deg,#645faa,#862d91);
  --glow:0 0 80px rgba(134,45,145,.25);
  --maxw:1180px; --radius:18px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Euclid",Inter,system-ui,sans-serif;
  background:var(--dark); color:var(--ink);
  line-height:1.55; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--magenta);color:#fff}

/* Ambient backdrop */
.bg-aura{position:fixed;inset:0;z-index:-2;pointer-events:none;transform:translateZ(0);
  background:
    radial-gradient(60vw 60vw at 12% -5%,rgba(100,95,170,.22),transparent 60%),
    radial-gradient(55vw 55vw at 100% 10%,rgba(134,45,145,.20),transparent 55%),
    radial-gradient(50vw 50vw at 50% 110%,rgba(107,163,215,.14),transparent 60%);
}
.bg-grid{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 25%,transparent 75%);
}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
section{position:relative;padding:clamp(70px,9vw,140px) 0}
.eyebrow{font-size:.74rem;letter-spacing:.28em;text-transform:uppercase;color:var(--purple);
  font-weight:600;display:inline-flex;align-items:center;gap:10px;margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--purple)}
h1,h2,h3{font-family:"Euclid",sans-serif;font-weight:700;line-height:1.04;letter-spacing:-.02em}
h2{font-size:clamp(2rem,4.4vw,3.4rem)}
h3{font-size:clamp(1.15rem,2vw,1.5rem);letter-spacing:-.01em}
.lead{font-size:clamp(1.02rem,1.5vw,1.22rem);color:var(--muted);max-width:60ch}
.grad-text{background:var(--grad-hot);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;transition:.4s var(--ease);
  border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(19,17,32,.72);backdrop-filter:blur(18px) saturate(1.4);
  border-bottom-color:var(--line);padding:12px 28px}
.nav .brand{display:flex;align-items:center;gap:12px;font-weight:600;letter-spacing:-.01em}
.nav .brand img{height:26px;width:auto}
.nav .brand small{color:var(--faint);font-weight:400;font-size:.82rem}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{font-size:.9rem;color:var(--muted);padding:8px 14px;border-radius:99px;transition:.25s}
.nav-links a:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--ink);background:rgba(100,95,170,.18)}
.nav-cta{background:var(--grad-cool);color:#fff !important;font-weight:600;
  box-shadow:0 6px 24px rgba(134,45,145,.35)}
.nav-cta:hover{filter:brightness(1.1)}
.burger{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* progress bar */
.scroll-prog{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
  background:var(--grad-hot);box-shadow:0 0 12px rgba(134,45,145,.6)}

/* ---------- Hero ---------- */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding-top:120px;padding-bottom:60px}
.hero .badge{display:inline-flex;align-items:center;gap:10px;font-size:.8rem;color:var(--muted);
  border:1px solid var(--line-2);border-radius:99px;padding:7px 16px;margin-bottom:30px;width:fit-content;
  background:rgba(255,255,255,.03)}
.hero .badge .dot{width:8px;height:8px;border-radius:50%;background:#5fd38a;box-shadow:0 0 10px #5fd38a;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(2.7rem,7.5vw,6rem);font-weight:700;font-family:"Euclid";margin-bottom:26px}
.hero h1 .line{display:block;overflow:hidden}
.hero h1 .line>span{display:block}
.hero .sub{font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted);max-width:62ch;margin-bottom:38px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:99px;
  font-weight:600;font-size:.96rem;cursor:pointer;border:1px solid var(--line-2);
  transition:.3s var(--ease)}
.btn-primary{background:var(--grad-cool);border-color:transparent;color:#fff;box-shadow:0 10px 34px rgba(134,45,145,.36)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px rgba(134,45,145,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.05);border-color:var(--line-2);transform:translateY(-2px)}
.hero-stats{display:flex;gap:38px;margin-top:64px;flex-wrap:wrap}
.hero-stats .st b{font-family:"Euclid";font-size:clamp(1.8rem,3vw,2.6rem);font-weight:700;
  background:var(--grad-hot);-webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.hero-stats .st span{font-size:.82rem;color:var(--faint);letter-spacing:.04em}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(34px)}

/* ---------- Cards ---------- */
.grid{display:grid;gap:20px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(160deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:.35s var(--ease);position:relative;overflow:hidden}
.card:hover{border-color:var(--line-2);transform:translateY(-4px);
  box-shadow:0 20px 50px rgba(0,0,0,.34)}
.card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  margin-bottom:18px;background:rgba(100,95,170,.16);border:1px solid var(--line-2);font-size:1.3rem}
.card h3{margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem}
.card .tag{position:absolute;top:18px;right:18px;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--faint);border:1px solid var(--line);border-radius:99px;padding:4px 10px}
.card-accent::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-hot);
  transform:scaleX(0);transform-origin:left;transition:.5s var(--ease)}
.card-accent:hover::before{transform:scaleX(1)}

.sec-head{margin-bottom:54px;max-width:64ch}

/* ---------- Layers (memory) ---------- */
.layers{display:flex;flex-direction:column;gap:12px}
.layer{display:grid;grid-template-columns:90px 1fr auto;align-items:center;gap:22px;
  padding:18px 24px;border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.025);transition:.35s var(--ease)}
.layer:hover{border-color:var(--line-2);background:rgba(100,95,170,.07);transform:translateX(6px)}
.layer .lid{font-family:"Euclid";font-weight:700;font-size:1.1rem;color:var(--purple)}
.layer h4{font-size:1.02rem;font-weight:600;margin-bottom:3px}
.layer p{font-size:.88rem;color:var(--muted)}
.layer .badge-store{font-size:.72rem;color:var(--lightblue);border:1px solid rgba(107,163,215,.3);
  border-radius:99px;padding:5px 12px;white-space:nowrap;background:rgba(107,163,215,.08)}

/* ---------- Timeline (scroll-driven) ---------- */
.timeline{position:relative;padding-left:42px}
/* static track */
.timeline .tl-track{content:"";position:absolute;left:14px;top:8px;bottom:8px;width:2px;
  background:rgba(255,255,255,.10);border-radius:2px}
/* animated fill (height set by JS) */
.timeline .tl-fill{position:absolute;left:14px;top:8px;width:2px;height:0;border-radius:2px;
  background:linear-gradient(var(--purple),var(--magenta) 50%,var(--lightblue));
  box-shadow:0 0 14px rgba(134,45,145,.55);will-change:height}
.tl-item{position:relative;padding:0 0 34px 0;
  opacity:.32;transform:translateX(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.tl-item:last-child{padding-bottom:0}
.tl-item.shown{opacity:1;transform:none}
.tl-item .dot{position:absolute;left:-35px;top:4px;width:14px;height:14px;border-radius:50%;
  background:var(--dark-2);border:2px solid var(--faint);box-shadow:0 0 0 4px rgba(255,255,255,.03);
  transition:.45s var(--ease)}
.tl-item.shown .dot{border-color:var(--magenta)}
.tl-item .dot.lit{border-color:var(--magenta);background:var(--magenta);
  box-shadow:0 0 0 5px rgba(134,45,145,.20),0 0 18px rgba(134,45,145,.8);transform:scale(1.18)}
.tl-item .time{font-family:"Euclid";font-weight:700;color:var(--lightblue);font-size:.95rem;letter-spacing:.02em}
.tl-item h4{font-size:1.05rem;margin:4px 0 5px}
.tl-item p{font-size:.9rem;color:var(--muted)}
.tl-item code{font-size:.82rem;color:var(--peach);background:rgba(238,161,114,.08);padding:2px 7px;border-radius:6px}

/* ---------- Access split (you vs team) ---------- */
.access{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.access .col{border:1px solid var(--line);border-radius:var(--radius);padding:30px;
  background:rgba(255,255,255,.02)}
.access .col.you{border-color:rgba(134,45,145,.35);background:rgba(134,45,145,.06)}
.access .col h3{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.access ul{list-style:none;display:flex;flex-direction:column;gap:14px}
.access li{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;font-size:.94rem;color:var(--muted)}
.access li b{color:var(--ink);font-weight:600}
.access li .k{font-family:"Euclid";color:var(--purple);font-size:.78rem;border:1px solid var(--line);
  border-radius:7px;padding:4px 9px;white-space:nowrap;margin-top:1px}

/* ---------- Stack chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:12px}
.chip{display:flex;align-items:center;gap:10px;padding:12px 18px;border:1px solid var(--line);
  border-radius:12px;background:rgba(255,255,255,.025);font-size:.9rem;transition:.3s var(--ease)}
.chip:hover{border-color:var(--line-2);transform:translateY(-3px);background:rgba(100,95,170,.08)}
.chip .port{color:var(--faint);font-size:.78rem;font-family:"Euclid"}
.chip a{color:var(--lightblue)}

/* ---------- CEO feature ---------- */
.feature{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  border:1px solid var(--line-2);border-radius:26px;padding:clamp(28px,4vw,56px);
  background:linear-gradient(150deg,rgba(134,45,145,.12),rgba(100,95,170,.05));position:relative;overflow:hidden}
.feature::after{content:"";position:absolute;width:420px;height:420px;right:-120px;top:-120px;
  background:radial-gradient(circle,rgba(134,45,145,.4),transparent 70%);filter:blur(30px);pointer-events:none}
.feature h2{font-size:clamp(1.8rem,3.4vw,2.8rem);margin-bottom:18px}
.feature p{color:var(--muted);margin-bottom:14px}
.pipeline-mini{position:relative;z-index:1}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);padding:60px 0 50px;margin-top:40px}
.footer .row{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.footer .brand{display:flex;align-items:center;gap:12px}
.footer .brand img{height:30px}
.footer small{color:var(--faint);font-size:.85rem}
.footer .links{display:flex;gap:22px;flex-wrap:wrap}
.footer .links a{color:var(--muted);font-size:.9rem;transition:.2s}
.footer .links a:hover{color:var(--ink)}

/* ---------- Deep-dive (sistem) typography ---------- */
.doc{max-width:820px;margin:0 auto}
.doc-hero{padding-top:150px;padding-bottom:30px}
.doc h2{margin:64px 0 18px;scroll-margin-top:100px}
.doc h3{margin:34px 0 12px;color:var(--ink)}
.doc p{color:var(--muted);margin-bottom:16px;font-size:1.02rem}
.doc ul,.doc ol{color:var(--muted);margin:0 0 18px 22px;display:flex;flex-direction:column;gap:9px}
.doc li b,.doc p b{color:var(--ink)}
.doc code{font-size:.85rem;color:var(--peach);background:rgba(238,161,114,.09);padding:2px 7px;border-radius:6px}
.doc a.ext{color:var(--lightblue);border-bottom:1px solid rgba(107,163,215,.3)}
.doc a.ext:hover{border-bottom-color:var(--lightblue)}
.callout{border:1px solid var(--line-2);border-left:3px solid var(--magenta);border-radius:12px;
  padding:18px 22px;background:rgba(134,45,145,.06);margin:22px 0;font-size:.95rem;color:var(--muted)}
.callout b{color:var(--ink)}
.toc{position:sticky;top:100px;align-self:start;font-size:.9rem;display:flex;flex-direction:column;gap:8px}
.toc a{color:var(--faint);padding:5px 0;border-left:2px solid transparent;padding-left:14px;transition:.2s}
.toc a:hover,.toc a.active{color:var(--ink);border-left-color:var(--magenta)}
.doc-grid{display:grid;grid-template-columns:220px 1fr;gap:54px;align-items:start}

/* tables */
.tbl{width:100%;border-collapse:collapse;margin:20px 0;font-size:.9rem}
.tbl th,.tbl td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
.tbl th{color:var(--purple);font-weight:600;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}
.tbl td{color:var(--muted)}
.tbl td b{color:var(--ink)}
.tbl tr:hover td{background:rgba(255,255,255,.02)}
.tbl code{color:var(--peach)}

/* code block */
pre.code{background:#0d0b18;border:1px solid var(--line);border-radius:12px;padding:18px 20px;
  overflow-x:auto;font-size:.82rem;line-height:1.7;color:#c9c2e8;margin:18px 0;
  font-family:"SF Mono",ui-monospace,Menlo,monospace}
pre.code .c{color:var(--faint)}
pre.code .k{color:var(--lightblue)}
pre.code .s{color:var(--peach)}

/* ---------- Diagram (SVG) ---------- */
.diagram-wrap{border:1px solid var(--line);border-radius:var(--radius);
  background:radial-gradient(120% 120% at 50% 0%,rgba(100,95,170,.08),transparent 60%),#0e0c1a;
  padding:18px;overflow:hidden}
.diagram-wrap svg{width:100%;height:auto;display:block}
.flow-node{transition:.3s}
.flow-pkt{fill:#6BA3D7}

/* ---------- Responsive ---------- */
@media(max-width:920px){
  .g-3,.g-4{grid-template-columns:repeat(2,1fr)}
  .access{grid-template-columns:1fr}
  .feature{grid-template-columns:1fr;gap:28px}
  .doc-grid{grid-template-columns:1fr}
  .toc{display:none}
}
@media(max-width:680px){
  .nav-links{position:fixed;top:0;bottom:0;left:auto;right:0;width:min(82vw,340px);flex-direction:column;
    align-items:stretch;justify-content:flex-start;gap:6px;padding:96px 22px 30px;
    background:rgba(16,14,28,.96);border-left:1px solid var(--line);
    opacity:0;visibility:hidden;pointer-events:none;transition:opacity .24s var(--ease),visibility .24s var(--ease)}
  .nav-links.open{opacity:1;visibility:visible;pointer-events:auto}
  .nav-links a{padding:14px 18px;font-size:1rem}
  .burger{display:flex}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .hero-stats{gap:26px}
  .layer{grid-template-columns:54px 1fr;grid-template-areas:"id main" "id store"}
  .layer .badge-store{grid-column:2}
  section{padding:60px 0}
}

/* ===========================================================
   AI·AI frontpage additions (services, domains, portfolio, lang)
   =========================================================== */

/* lang toggle */
.lang-toggle{display:inline-flex;border:1px solid var(--line-2);border-radius:99px;overflow:hidden;margin-left:6px}
.lang-toggle button{background:none;border:0;color:var(--muted);font:inherit;font-size:.82rem;font-weight:600;
  padding:7px 13px;cursor:pointer;transition:.25s}
.lang-toggle button.active{background:var(--grad-cool);color:#fff}
[data-lang-hide]{display:none !important}

/* service pillars */
.svc{display:grid;gap:20px;grid-template-columns:repeat(4,1fr)}
.svc .card .ic{font-size:1.5rem}
.svc .card ul{list-style:none;margin-top:12px;display:flex;flex-direction:column;gap:7px}
.svc .card li{font-size:.84rem;color:var(--faint);padding-left:16px;position:relative}
.svc .card li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--purple)}

/* domains of experience */
.domains{display:flex;flex-wrap:wrap;gap:14px}
.domain{flex:1 1 200px;border:1px solid var(--line);border-radius:14px;padding:22px 20px;
  background:rgba(255,255,255,.025);transition:.35s var(--ease)}
.domain:hover{border-color:var(--line-2);transform:translateY(-4px);background:rgba(100,95,170,.08)}
.domain .dico{font-size:1.6rem;margin-bottom:10px}
.domain h4{font-size:1rem;margin-bottom:5px}
.domain p{font-size:.84rem;color:var(--muted)}

/* portfolio */
.pf-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.pf-filters button{background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--muted);
  font:inherit;font-size:.86rem;font-weight:500;padding:9px 18px;border-radius:99px;cursor:pointer;transition:.25s var(--ease)}
.pf-filters button:hover{border-color:var(--line-2);color:var(--ink)}
.pf-filters button.active{background:var(--grad-cool);border-color:transparent;color:#fff;
  box-shadow:0 6px 20px rgba(134,45,145,.32)}
.pf-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pf-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--dark-2);
  transition:.4s var(--ease);display:flex;flex-direction:column}
.pf-card.hide{display:none}
.pf-card:hover{border-color:var(--line-2);transform:translateY(-5px);box-shadow:0 22px 50px rgba(0,0,0,.4)}
.pf-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0d0b18}
.pf-thumb img{width:100%;height:100%;object-fit:cover;object-position:top;transition:.6s var(--ease)}
.pf-card:hover .pf-thumb img{transform:scale(1.05)}
.pf-thumb .live{position:absolute;top:12px;left:12px;font-size:.68rem;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:#bff5d0;background:rgba(20,40,28,.8);border:1px solid rgba(95,211,138,.35);
  border-radius:99px;padding:4px 11px;display:flex;align-items:center;gap:6px;backdrop-filter:blur(6px)}
.pf-thumb .live .d{width:6px;height:6px;border-radius:50%;background:#5fd38a;box-shadow:0 0 8px #5fd38a}
.pf-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.pf-body h3{font-size:1.12rem}
.pf-body p{font-size:.88rem;color:var(--muted);flex:1}
.pf-tags{display:flex;flex-wrap:wrap;gap:7px}
.pf-tags span{font-size:.68rem;letter-spacing:.04em;color:var(--purple);border:1px solid var(--line);
  border-radius:99px;padding:3px 10px}
.pf-link{display:inline-flex;align-items:center;gap:7px;font-size:.86rem;font-weight:600;color:var(--lightblue);margin-top:2px}
.pf-link:hover{color:#fff}

/* CTA band */
.cta-band{border:1px solid var(--line-2);border-radius:26px;padding:clamp(36px,5vw,64px);text-align:center;
  background:linear-gradient(150deg,rgba(134,45,145,.14),rgba(100,95,170,.06));position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;width:480px;height:480px;left:50%;top:-60%;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(134,45,145,.35),transparent 70%);filter:blur(30px);pointer-events:none}
.cta-band h2{font-size:clamp(1.9rem,4vw,3rem);margin-bottom:18px;position:relative}
.cta-band p{color:var(--muted);max-width:54ch;margin:0 auto 30px;position:relative}
.cta-band .hero-actions{justify-content:center;position:relative}

@media(max-width:920px){
  .svc{grid-template-columns:repeat(2,1fr)}
  .pf-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .svc,.pf-grid{grid-template-columns:1fr}
}
/* ===========================================================
   Shared v3: animated cursor + lighter background + pipeline center
   =========================================================== */
/* lighter drifting blobs that "open up" the dark bg */
.bg-blobs{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;transform:translateZ(0)}
.bg-blobs span{position:absolute;border-radius:50%;filter:blur(44px)}
.bg-blobs .b1{width:42vw;height:42vw;background:radial-gradient(circle,rgba(124,118,210,.38),transparent 68%);top:2%;left:58%}
.bg-blobs .b2{width:36vw;height:36vw;background:radial-gradient(circle,rgba(107,163,215,.32),transparent 68%);top:48%;left:4%}
.bg-blobs .b3{width:30vw;height:30vw;background:radial-gradient(circle,rgba(222,96,125,.24),transparent 68%);top:74%;left:70%}
.bg-blobs .b4{width:26vw;height:26vw;background:radial-gradient(circle,rgba(134,45,145,.28),transparent 68%);top:30%;left:30%}
@keyframes drift1{0%,100%{transform:translate(0,0)}50%{transform:translate(-5vw,4vw)}}
@keyframes drift2{0%,100%{transform:translate(0,0)}50%{transform:translate(4vw,-3vw)}}
@keyframes drift3{0%,100%{transform:translate(0,0)}50%{transform:translate(-3vw,-4vw)}}
@media(prefers-reduced-motion:reduce){.bg-blobs span{animation:none}}

/* cursor-following glow that interacts with the background */
.cursor-glow{position:fixed;top:0;left:0;width:520px;height:520px;border-radius:50%;pointer-events:none;z-index:-1;
  background:radial-gradient(circle,rgba(150,110,220,.20),rgba(107,163,215,.10) 38%,transparent 68%);
  transform:translate(-50%,-50%);opacity:0;transition:opacity .5s;will-change:transform}
.cursor-glow.on{opacity:1}
@media(hover:none){.cursor-glow{display:none}}

/* pipeline mini: center it */
.pipeline-mini svg{display:block;width:100%;max-width:360px;margin-inline:auto}

/* ===========================================================
   AI·AI v3: wordplay hero, terminal, internal cards, stack, contact
   =========================================================== */
/* wordplay hero */
.hero-play{font-family:"Euclid";font-weight:700;line-height:1;letter-spacing:-.02em;
  font-size:clamp(4rem,15vw,11rem);margin-bottom:14px}
.hero-play .ai-lc{color:#cfc9e6}
.hero-play .ai-uc{background:var(--grad-hot);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-play .q{color:var(--lightblue)}
.hero-tag{font-family:"Euclid";font-weight:600;font-size:clamp(1.4rem,3.4vw,2.4rem);margin-bottom:30px;color:var(--ink)}
.hero-tag b{background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-tag .cur{display:inline-block;width:3px;height:1em;background:var(--lightblue);vertical-align:-2px;margin-left:4px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* terminal loading */
.terminal{max-width:560px;border:1px solid var(--line-2);border-radius:14px;overflow:hidden;
  background:#0c0a16;font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:.86rem;margin-bottom:34px;
  box-shadow:0 24px 60px rgba(0,0,0,.4)}
.terminal .bar{display:flex;gap:7px;padding:11px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.terminal .bar i{width:11px;height:11px;border-radius:50%;display:block}
.terminal .bar i:nth-child(1){background:#ff5f57}.terminal .bar i:nth-child(2){background:#febc2e}.terminal .bar i:nth-child(3){background:#28c840}
.terminal .body{padding:16px 18px;line-height:1.9;color:#c9c2e8;min-height:120px}
.terminal .ln .p{color:#6BA3D7}
.terminal .ok{color:#5fd38a}
.terminal .pct{color:#DE607D}
.terminal .barfill{display:inline-block;width:160px;height:7px;border-radius:6px;background:rgba(255,255,255,.1);
  vertical-align:middle;overflow:hidden;margin:0 8px}
.terminal .barfill > i{display:block;height:100%;width:0;background:linear-gradient(90deg,#645faa,#862d91,#6BA3D7);border-radius:6px}
.terminal .tcur{display:inline-block;width:8px;height:1em;background:#c9c2e8;vertical-align:-2px;animation:blink 1.1s steps(1) infinite}

/* internal (mockup) project card — no screenshot, styled header */
.pf-thumb.mock{display:flex;align-items:center;justify-content:center;
  background:radial-gradient(120% 120% at 30% 0%,rgba(134,45,145,.22),transparent 60%),linear-gradient(160deg,#211c38,#14111f)}
.pf-thumb.mock .mico svg{width:60px;height:60px;opacity:.92}
.pf-cat{position:absolute;top:12px;left:12px;font-size:.66rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  border-radius:99px;padding:4px 11px;backdrop-filter:blur(6px)}
.cat-tool{color:#bdb6ff;background:rgba(100,95,170,.2);border:1px solid rgba(124,118,210,.4)}
.cat-agent{color:#7fd0e6;background:rgba(107,163,215,.16);border:1px solid rgba(107,163,215,.4)}
.cat-voice{color:#f0a6c0;background:rgba(222,96,125,.16);border:1px solid rgba(222,96,125,.4)}
.cat-auto{color:#f3b89a;background:rgba(225,123,98,.16);border:1px solid rgba(225,123,98,.4)}
.cat-research{color:#c6a6f0;background:rgba(122,66,148,.2);border:1px solid rgba(150,110,220,.4)}
.pf-thumb .badge-mock{position:absolute;top:12px;right:12px;font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--faint);background:rgba(12,10,22,.7);border:1px solid var(--line);border-radius:99px;padding:4px 9px}

/* scroll-stacking cards — solid (opaque), uniform size, centered */
.stack{position:relative}
.stack-card{position:sticky;border:1px solid var(--line-2);border-radius:28px;
  padding:clamp(34px,4.5vw,64px);overflow:hidden;
  box-shadow:0 -1px 0 rgba(255,255,255,.05),0 34px 80px rgba(0,0,0,.55);
  min-height:min(620px,84vh);display:flex;align-items:center}
.stack-card + .stack-card{margin-top:clamp(80px,26vh,300px)}
.stack-card.s1{top:84px;z-index:1;background:#191428}
.stack-card.s2{top:104px;z-index:2;background:#1c1531}
.stack-card.s3{top:124px;z-index:3;background:#1f1736}
.stack-card .glow{position:absolute;width:480px;height:480px;right:-130px;top:-180px;
  background:radial-gradient(circle,rgba(134,45,145,.26),transparent 70%);pointer-events:none}
.stack-card .inner{position:relative;z-index:1;width:100%}
.why-wait ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:14px 26px;margin:8px 0 26px}
.why-wait li{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;color:var(--muted);font-size:.96rem}
.why-wait li .ico{width:22px;height:22px;flex:0 0 auto;margin-top:1px}
.why-wait li b{color:var(--ink)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.contact-info{display:flex;flex-direction:column;gap:18px}
.contact-info .row{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;background:rgba(255,255,255,.025);transition:.3s var(--ease)}
.contact-info .row:hover{border-color:var(--line-2);background:rgba(100,95,170,.07)}
.contact-info .row .ico{width:26px;height:26px;flex:0 0 auto}
.contact-info .row b{display:block;color:var(--ink);font-size:.95rem}
.contact-info .row span{color:var(--faint);font-size:.82rem}
.form{border:1px solid var(--line-2);border-radius:20px;padding:28px;background:rgba(20,17,31,.6)}
.form label{display:block;font-size:.78rem;color:var(--muted);margin:0 0 6px;letter-spacing:.02em}
.form .field{margin-bottom:16px}
.form input,.form textarea{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line-2);
  border-radius:11px;padding:13px 15px;color:var(--ink);font:inherit;font-size:.95rem;transition:.25s}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--purple);background:rgba(100,95,170,.1)}
.form textarea{resize:vertical;min-height:96px}
.form .btn{width:100%;justify-content:center;margin-top:4px}
.form .wa{background:linear-gradient(135deg,#25d366,#128c5e);border-color:transparent;color:#fff;box-shadow:0 10px 30px rgba(37,211,102,.3)}
.form .wa:hover{filter:brightness(1.08);transform:translateY(-2px)}
.form .or{text-align:center;color:var(--faint);font-size:.78rem;margin:12px 0}

/* floating WhatsApp */
.wa-float{position:fixed;right:22px;bottom:22px;z-index:55;width:58px;height:58px;border-radius:50%;
  display:grid;place-items:center;background:linear-gradient(135deg,#25d366,#128c5e);
  box-shadow:0 10px 30px rgba(37,211,102,.45);transition:.3s var(--ease)}
.wa-float:hover{transform:scale(1.08) translateY(-2px)}
.wa-float svg{width:30px;height:30px;fill:#fff}

@media(max-width:920px){ .contact-grid{grid-template-columns:1fr} .why-wait ul{grid-template-columns:1fr} }
@media(max-width:680px){
  .stack-card{position:static;min-height:0;display:block;padding:28px 22px}
  .stack-card + .stack-card{margin-top:20px}
}

/* ===========================================================
   AI·AI v4: dynamic ? + final video CTA
   =========================================================== */
.hero-play .q{display:inline-block;transform-origin:50% 60%;animation:qloose 3.6s ease-in-out infinite}
@keyframes qloose{0%,100%{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-12px) rotate(10deg)}}
@media(prefers-reduced-motion:reduce){.hero-play .q{animation:none}}

/* final video CTA (shows.ai-ai.ro style) */
.final-wrap{max-width:var(--maxw);margin:0 auto;padding:clamp(46px,7vw,100px) 28px}
.final-cta{position:relative;min-height:56vh;display:flex;align-items:center;justify-content:center;
  text-align:center;overflow:hidden;border-radius:28px;border:1px solid var(--line-2);box-shadow:0 34px 80px rgba(0,0,0,.5)}
.final-cta video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.final-cta .veil{position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(19,17,32,.82),rgba(19,17,32,.62) 45%,rgba(19,17,32,.9)),
    radial-gradient(60% 60% at 50% 45%,rgba(134,45,145,.25),transparent 70%)}
.final-cta .inner{position:relative;z-index:2;padding:60px 28px;max-width:900px}
.final-cta .eyebrow{justify-content:center}
.final-cta h2{font-size:clamp(2.2rem,6vw,4.6rem);line-height:1.04;margin-bottom:8px}
.final-cta .big{display:block;font-size:clamp(3rem,11vw,8rem);font-weight:700;line-height:1;letter-spacing:-.03em;margin-top:6px}
.final-cta .big .lc{color:#cfc9e6}.final-cta .big .uc{background:var(--grad-hot);-webkit-background-clip:text;background-clip:text;color:transparent}
.final-cta p{color:var(--muted);font-size:clamp(1rem,1.6vw,1.25rem);max-width:54ch;margin:22px auto 32px}
.final-cta .hero-actions{justify-content:center}
/* ===== Custom animated cursor (dot + trailing ring) ===== */
@media(hover:hover) and (pointer:fine){
  html{cursor:none}
  a,button,.burger,.lang-toggle button,.pf-filters button,label,summary{cursor:none}
  input,textarea,select{cursor:text}
}
.cursor-dot,.cursor-ring{position:fixed;left:0;top:0;border-radius:50%;pointer-events:none;z-index:9999;
  transform:translate(-50%,-50%);will-change:transform;opacity:0;transition:opacity .35s}
.cursor-dot{width:7px;height:7px;background:#DE607D;box-shadow:0 0 12px rgba(222,96,125,.9)}
.cursor-ring{width:34px;height:34px;border:1.6px solid rgba(160,150,225,.75);
  transition:width .25s var(--ease),height .25s var(--ease),border-color .25s,background .25s,opacity .35s}
.cursor-dot.on,.cursor-ring.on{opacity:1}
.cursor-ring.hot{width:56px;height:56px;border-color:rgba(222,96,125,.9);background:rgba(222,96,125,.08)}
.cursor-ring.down{width:24px;height:24px;border-color:#DE607D}
@media(hover:none),(pointer:coarse){.cursor-dot,.cursor-ring{display:none}}

/* ===== Hero constellation network (canvas) ===== */
.hero{position:relative}
.hero#top{justify-content:flex-start;padding-top:clamp(120px,16vh,200px)}
.hero-net{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;
  opacity:1;mask-image:linear-gradient(180deg,#000 82%,transparent);-webkit-mask-image:linear-gradient(180deg,#000 82%,transparent)}
.hero > *:not(.hero-net){position:relative;z-index:1}

/* ===== Mobile fixes (menu compact + footer centered) ===== */
@media(max-width:680px){
  /* mobile menu: slight transparency + compact lang toggle & CTA */
  .nav-links{background:rgba(16,14,28,.80);gap:3px}
  .nav-links .lang-toggle{align-self:flex-start;margin:10px 0 2px}
  .nav-links .lang-toggle button{padding:6px 14px;font-size:.8rem}
  .nav-links .nav-cta{align-self:flex-start;padding:10px 20px;font-size:.92rem;margin-top:2px}
  /* footer centered + clear of floating WhatsApp button */
  .footer .row{flex-direction:column;align-items:center;text-align:center;gap:16px}
  .footer .links{justify-content:center}
  .footer p{text-align:center}
  .footer{padding-bottom:104px}
}

/* ===== Mobile fixes v2 (menu narrower+readable, smaller icons) ===== */
@media(max-width:680px){
  .nav-links{width:min(72vw,300px);background:rgba(15,13,24,.90);top:0;bottom:0;height:100vh;height:100dvh;overflow-y:auto}
  .card .ic{width:40px;height:40px;margin-bottom:12px}
  .card .ic svg,.card .ic .ico{width:20px;height:20px}
  .svc{gap:14px}
  .svc .card{padding:20px 22px}
  .domain .dico svg{width:30px;height:30px}
}

/* ===== Scroll-lock when mobile menu open (iOS-robust) ===== */
html.menu-open{overflow:hidden}