/* ============================================================
   NEXA — Advertising Intelligence Beyond Sight
   Visual system: deep void, violet→cyan light, Satoshi + mono.
   ============================================================ */

:root{
  --bg:        #07050e;
  --bg-2:      #0b0712;
  --ink:       #0e1117;
  --violet:    #7b2dff;
  --violet-lo: #5a1fd6;
  --indigo:    #5a78ff;
  --cyan:      #00e5ff;
  --text:      #eceafb;
  --text-2:    #b7b1d8;
  --muted:     #7e779f;
  --hair:      rgba(123,45,255,.16);
  --hair-2:    rgba(255,255,255,.07);
  --glass:     rgba(18,13,33,.55);
  --grad:      linear-gradient(90deg,#7b2dff 0%,#5a78ff 48%,#00e5ff 100%);
  --shadow:    0 30px 80px -30px rgba(0,0,0,.8);
  --mono:      "Space Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --sans:      "Satoshi", "Inter", system-ui, -apple-system, sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.no-smooth{scroll-behavior:auto}

a{color:inherit;text-decoration:none}
::selection{background:rgba(123,45,255,.4);color:#fff}

/* WebGL canvas: fixed, behind everything --------------------- */
#bg-canvas{
  position:fixed; inset:0; width:100vw; height:100vh;
  z-index:0; display:block;
  background:
    radial-gradient(120% 90% at 50% 0%, #160c2e 0%, #0a0716 42%, #07050e 100%);
}
/* faint vignette + grain over the canvas */
.fx-overlay{
  position:fixed; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(120% 120% at 50% 50%, transparent 55%, rgba(4,2,10,.55) 100%);
  mix-blend-mode:normal;
}
.fx-overlay::after{
  content:""; position:absolute; inset:0; opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── Top navigation ───────────────────────────────────────── */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:40;
  display:flex; align-items:center; justify-content:space-between;
  padding:22px clamp(20px,4vw,56px);
  transition:background .4s ease, backdrop-filter .4s ease, padding .4s ease;
}
.nav.scrolled{
  background:linear-gradient(180deg, rgba(7,5,14,.82), rgba(7,5,14,0));
  backdrop-filter:blur(2px);
  padding-top:16px; padding-bottom:16px;
}
.nav-logo{display:flex;align-items:center;gap:12px;height:26px}
.nav-logo svg{height:22px;width:auto;display:block}
.nav-right{display:flex;align-items:center;gap:clamp(14px,2.4vw,34px)}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2vw,30px)}
.nav-links a{
  font-size:12.5px; letter-spacing:.04em; color:var(--text-2);
  transition:color .25s; position:relative; padding:4px 0;
}
.nav-links a:hover{color:#fff}
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:-2px; height:1px; width:0;
  background:var(--grad); transition:width .3s ease;
}
.nav-links a:hover::after{width:100%}
@media(max-width:880px){ .nav-links{display:none} }

/* language switch */
.lang{
  display:inline-flex; align-items:center; border:1px solid var(--hair);
  border-radius:999px; overflow:hidden; font-family:var(--mono); font-size:11px;
}
.lang button{
  appearance:none; border:0; background:transparent; color:var(--muted);
  padding:6px 11px; cursor:pointer; letter-spacing:.05em; transition:.25s;
}
.lang button.active{ color:#04020a; background:var(--cyan); }
.lang button:not(.active):hover{ color:#fff }

/* primary button */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--sans); font-weight:600; font-size:14px; letter-spacing:.01em;
  padding:13px 22px; border-radius:999px; cursor:pointer; border:0;
  color:#05030c; background:var(--grad); position:relative; isolation:isolate;
  box-shadow:0 10px 30px -10px rgba(123,45,255,.7);
  transition:transform .25s ease, box-shadow .25s ease;
}
.btn:hover{ transform:translateY(-2px); box-shadow:0 18px 44px -12px rgba(0,229,255,.6); }
.btn .dot{width:7px;height:7px;border-radius:50%;background:#05030c;opacity:.6}
.btn.ghost{
  background:transparent; color:var(--text); border:1px solid var(--hair);
  box-shadow:none;
}
.btn.ghost:hover{ border-color:var(--cyan); background:rgba(0,229,255,.06); }

/* ── Scroll progress / chapter rail ───────────────────────── */
.rail{
  position:fixed; right:clamp(16px,2.2vw,30px); top:50%; transform:translateY(-50%);
  z-index:35; display:flex; flex-direction:column; gap:16px; align-items:flex-end;
}
@media(max-width:880px){ .rail{display:none} }
.rail button{
  appearance:none;border:0;background:transparent;cursor:pointer;
  display:flex;align-items:center;gap:10px;color:var(--muted);
  font-family:var(--mono);font-size:10px;letter-spacing:.08em;
  text-transform:uppercase;transition:color .3s;
}
.rail .tick{width:22px;height:1px;background:var(--muted);transition:.3s;opacity:.5}
.rail .label{opacity:0;transform:translateX(6px);transition:.3s;white-space:nowrap}
.rail button:hover{color:var(--text-2)}
.rail button:hover .label{opacity:1;transform:none}
.rail button.active{color:#fff}
.rail button.active .tick{width:40px;background:var(--cyan);opacity:1;box-shadow:0 0 10px var(--cyan)}
.rail button.active .label{opacity:1;transform:none}

/* ── Chapter layout ───────────────────────────────────────── */
.scroller{position:relative;z-index:2}
.chapter{
  position:relative; min-height:100vh;
  display:flex; flex-direction:column; justify-content:center;
  padding:120px clamp(20px,7vw,140px);
}
.wrap{width:100%;max-width:1240px;margin:0 auto}

/* eyebrow / kicker */
.kick{
  font-family:var(--mono); font-size:12px; letter-spacing:.34em;
  text-transform:uppercase; color:var(--cyan); display:flex; align-items:center; gap:12px;
}
.kick::before{content:"";width:30px;height:1px;background:var(--grad)}

/* reveal animation */
.rv{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.chapter.in .rv{opacity:1;transform:none}
.chapter.in .rv.d1{transition-delay:.08s}
.chapter.in .rv.d2{transition-delay:.16s}
.chapter.in .rv.d3{transition-delay:.24s}
.chapter.in .rv.d4{transition-delay:.32s}
.chapter.in .rv.d5{transition-delay:.4s}
@media(prefers-reduced-motion:reduce){ .rv{opacity:1;transform:none;transition:none} }

/* ── HERO ─────────────────────────────────────────────────── */
#hero{align-items:center;text-align:center;min-height:100vh}
.hero-inner{display:flex;flex-direction:column;align-items:center;gap:30px;max-width:1000px}
.wordmark{width:min(78vw,820px);height:auto;display:block;filter:drop-shadow(0 0 40px rgba(123,45,255,.25))}
.hero-tag{
  font-size:clamp(1.6rem,3.4vw,2.9rem); font-weight:500; line-height:1.12;
  letter-spacing:-.01em; max-width:18ch;
}
.hero-tag .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(1rem,1.5vw,1.2rem);color:var(--text-2);max-width:54ch;line-height:1.6}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:6px}
.see-decide{
  display:flex;gap:0;align-items:center;font-family:var(--mono);font-size:12px;
  letter-spacing:.32em;text-transform:uppercase;color:var(--muted);margin-top:4px;flex-wrap:wrap;justify-content:center
}
.see-decide span{padding:0 14px;position:relative}
.see-decide span+span::before{content:"";position:absolute;left:0;top:50%;width:1px;height:11px;background:var(--hair);transform:translateY(-50%)}
.see-decide b{font-weight:400}
.see-decide span:nth-child(2){color:var(--indigo)}
.see-decide span:nth-child(3){color:var(--cyan)}

/* scroll hint */
.scroll-hint{
  position:absolute;bottom:34px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-family:var(--mono);font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);
}
.scroll-hint .line{width:1px;height:46px;background:linear-gradient(var(--cyan),transparent);position:relative;overflow:hidden}
.scroll-hint .line::after{content:"";position:absolute;top:-50%;left:0;width:100%;height:50%;background:var(--cyan);animation:drop 1.8s infinite}
@keyframes drop{0%{top:-50%}100%{top:100%}}

/* flow-variant tweaks of hero (heroVariant=flow) */
body[data-hero="flow"] #hero .hero-inner{align-items:flex-start;text-align:left;max-width:1240px}
body[data-hero="flow"] #hero{align-items:flex-start;text-align:left;padding-left:clamp(20px,8vw,140px)}
body[data-hero="flow"] .wordmark{width:min(66vw,680px)}
body[data-hero="flow"] .see-decide,body[data-hero="flow"] .hero-cta{justify-content:flex-start}

/* ── Generic section header ───────────────────────────────── */
.sec-head{max-width:760px;margin-bottom:clamp(34px,5vw,68px)}
.sec-title{
  font-size:clamp(2.2rem,5.4vw,4.4rem); font-weight:700; line-height:1.04;
  letter-spacing:-.025em; margin:18px 0 0;
}
.sec-title em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-lead{font-size:clamp(1.05rem,1.5vw,1.25rem);color:var(--text-2);line-height:1.65;margin-top:22px;max-width:60ch}

/* ── Pipeline (how it works) ─────────────────────────────── */
.pipe{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:18px}
@media(max-width:900px){ .pipe{grid-template-columns:repeat(2,1fr)} }
.pipe-step{
  position:relative;padding:24px 20px 26px;border:1px solid var(--hair);
  border-radius:16px;background:var(--glass);backdrop-filter:blur(8px);
  min-height:180px;display:flex;flex-direction:column;gap:12px;overflow:hidden;
  transition:border-color .35s, transform .35s;
}
.pipe-step:hover{border-color:rgba(0,229,255,.45);transform:translateY(-4px)}
.pipe-step::before{
  content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background:radial-gradient(120% 80% at 0% 0%, rgba(123,45,255,.14), transparent 60%);
}
.pipe-num{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--cyan)}
.pipe-step h4{margin:0;font-size:1.06rem;font-weight:600;letter-spacing:-.01em}
.pipe-step p{margin:0;font-size:.86rem;color:var(--text-2);line-height:1.5}
.pipe-step .ic{width:34px;height:34px;border:1px solid var(--hair);border-radius:9px;display:grid;place-items:center;color:var(--cyan)}
.pipe-step .ic svg{width:18px;height:18px}

/* ── Feature grid (asset control) ─────────────────────────── */
.feat{display:grid;grid-template-columns:repeat(12,1fr);gap:16px;margin-top:14px}
.card{
  position:relative;border:1px solid var(--hair);border-radius:20px;
  background:var(--glass);backdrop-filter:blur(10px);padding:30px;overflow:hidden;
  transition:border-color .4s, transform .4s, box-shadow .4s;
}
.card:hover{border-color:rgba(0,229,255,.4);transform:translateY(-5px);box-shadow:var(--shadow)}
.card .glow{position:absolute;width:240px;height:240px;border-radius:50%;filter:blur(70px);opacity:.22;pointer-events:none;background:var(--violet);top:-80px;right:-60px}
.card.cy .glow{background:var(--cyan)}
.card h3{margin:14px 0 8px;font-size:1.35rem;font-weight:700;letter-spacing:-.02em}
.card p{margin:0;color:var(--text-2);font-size:.95rem;line-height:1.55}
.card .badge{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan)}
.card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--hair);color:#fff;background:linear-gradient(150deg,rgba(123,45,255,.25),rgba(0,229,255,.12))}
.card .ic svg{width:24px;height:24px}
.card ul{margin:18px 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.card li{font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--text-2);border:1px solid var(--hair);border-radius:999px;padding:5px 11px}
.col-6{grid-column:span 6}.col-4{grid-column:span 4}.col-3{grid-column:span 3}.col-12{grid-column:span 12}
@media(max-width:900px){ .col-6,.col-4,.col-3{grid-column:span 12} }

/* ── Batch ops ────────────────────────────────────────────── */
.batch{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
@media(max-width:980px){ .batch{grid-template-columns:1fr;gap:30px} }
.queue{
  border:1px solid var(--hair);border-radius:18px;background:var(--glass);
  backdrop-filter:blur(10px);overflow:hidden;box-shadow:var(--shadow);
}
.queue .qhd{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--hair-2);font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--muted)}
.queue .qhd .live{display:flex;align-items:center;gap:8px;color:var(--cyan)}
.queue .qhd .live i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.qrow{display:grid;grid-template-columns:18px 1fr auto;gap:12px;align-items:center;padding:13px 18px;border-bottom:1px solid var(--hair-2);font-size:.9rem}
.qrow:last-child{border-bottom:0}
.qrow .chk{width:16px;height:16px;border-radius:5px;border:1px solid var(--hair);display:grid;place-items:center}
.qrow .chk.ok{background:var(--grad);border:0}
.qrow .chk.ok svg{width:11px;height:11px;color:#05030c}
.qrow .nm{color:var(--text)}
.qrow .nm small{display:block;color:var(--muted);font-family:var(--mono);font-size:10px;letter-spacing:.06em;margin-top:2px}
.qrow .st{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;padding:4px 9px;border-radius:999px}
.st.done{color:var(--cyan);background:rgba(0,229,255,.08)}
.st.run{color:var(--indigo);background:rgba(90,120,255,.1)}
.st.wait{color:var(--muted);background:rgba(255,255,255,.04)}
.st.err{color:#ff7a9c;background:rgba(255,122,156,.08)}
.qbar{height:3px;background:rgba(255,255,255,.06)}
.qbar i{display:block;height:100%;width:64%;background:var(--grad);box-shadow:0 0 12px var(--cyan)}
.batch-list{display:flex;flex-direction:column;gap:20px}
.bl-item{display:flex;gap:16px;align-items:flex-start}
.bl-item .n{font-family:var(--mono);font-size:12px;color:var(--cyan);margin-top:3px}
.bl-item h4{margin:0 0 4px;font-size:1.08rem;font-weight:600}
.bl-item p{margin:0;color:var(--text-2);font-size:.92rem;line-height:1.5}

/* ── Browser mock (new tab) ───────────────────────────────── */
.tab-stage{margin-top:14px;display:flex;justify-content:center}
.browser{
  width:100%;max-width:1180px;border-radius:16px;overflow:hidden;
  border:1px solid var(--hair);background:#0a0712;box-shadow:0 50px 120px -40px rgba(0,0,0,.9), 0 0 0 1px rgba(123,45,255,.08);
}
.b-bar{display:flex;align-items:center;gap:14px;padding:11px 16px;background:#0d0a18;border-bottom:1px solid var(--hair-2)}
.b-dots{display:flex;gap:7px}
.b-dots i{width:11px;height:11px;border-radius:50%;background:#2a2440}
.b-tabs{display:flex;gap:8px;align-items:center;flex:1}
.b-tab{display:flex;align-items:center;gap:9px;padding:7px 14px;border-radius:9px 9px 0 0;font-size:12px;color:var(--text-2);background:#120d22;border:1px solid var(--hair-2);border-bottom:0}
.b-tab.on{background:#1a1230;color:#fff}
.b-tab .fav{width:13px;height:13px;border-radius:4px;background:var(--grad)}
.b-url{flex:0 0 auto;font-family:var(--mono);font-size:11px;color:var(--muted);background:#120d22;border:1px solid var(--hair-2);padding:6px 14px;border-radius:999px}
.app{display:grid;grid-template-columns:210px 1fr;min-height:520px}
@media(max-width:760px){ .app{grid-template-columns:1fr} .app .side{display:none} }
.side{border-right:1px solid var(--hair-2);padding:20px 14px;display:flex;flex-direction:column;gap:4px;background:#0b0816}
.side .brand{display:flex;align-items:center;gap:9px;padding:6px 10px 18px}
.side .brand svg{height:15px}
.side a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:9px;font-size:13px;color:var(--text-2);transition:.2s}
.side a svg{width:16px;height:16px;opacity:.8}
.side a.on{background:linear-gradient(90deg,rgba(123,45,255,.22),transparent);color:#fff}
.side a.on svg{color:var(--cyan);opacity:1}
.main{padding:24px 26px;display:flex;flex-direction:column;gap:20px}
.m-top{display:flex;align-items:center;justify-content:space-between}
.m-top h5{margin:0;font-size:1.15rem;font-weight:700}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media(max-width:600px){ .kpis{grid-template-columns:repeat(2,1fr)} }
.kpi{border:1px solid var(--hair-2);border-radius:12px;padding:15px;background:#0c0918}
.kpi .lbl{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.kpi .val{font-size:1.5rem;font-weight:700;margin-top:7px;letter-spacing:-.02em}
.kpi .dl{font-size:11px;margin-top:4px;color:var(--cyan)}
.kpi.warn .dl{color:#ff7a9c}
.panel-2{display:grid;grid-template-columns:1.4fr 1fr;gap:14px}
@media(max-width:700px){ .panel-2{grid-template-columns:1fr} }
.pnl{border:1px solid var(--hair-2);border-radius:12px;padding:16px 18px;background:#0c0918}
.pnl h6{margin:0 0 14px;font-size:12.5px;font-weight:600;color:var(--text-2);font-family:var(--mono);letter-spacing:.06em}
.spark{height:90px;width:100%}
.health{display:flex;flex-direction:column;gap:11px}
.hrow{display:flex;align-items:center;gap:11px;font-size:12.5px}
.hrow .nm{flex:1;color:var(--text-2)}
.hrow .track{flex:0 0 110px;height:5px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden}
.hrow .track i{display:block;height:100%;background:var(--grad)}
.hrow .pct{font-family:var(--mono);font-size:11px;color:#fff;width:34px;text-align:right}

/* ── CTA / footer ─────────────────────────────────────────── */
#cta{text-align:center;align-items:center}
.cta-inner{display:flex;flex-direction:column;align-items:center;gap:26px;max-width:760px}
.cta-title{font-size:clamp(2.4rem,6.5vw,5.2rem);font-weight:700;line-height:1;letter-spacing:-.03em}
.cta-title em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.foot{
  position:relative;z-index:2;border-top:1px solid var(--hair);
  padding:40px clamp(20px,7vw,140px);display:flex;align-items:center;justify-content:space-between;
  gap:20px;flex-wrap:wrap;font-size:12px;color:var(--muted);font-family:var(--mono);letter-spacing:.04em;
}
.foot svg{height:16px}
.foot .fl{display:flex;gap:22px;flex-wrap:wrap}
.foot a:hover{color:var(--text-2)}

/* loader */
#loader{position:fixed;inset:0;z-index:100;background:var(--bg);display:grid;place-items:center;transition:opacity .8s ease;}
#loader.gone{opacity:0;pointer-events:none}
#loader .lm{display:flex;flex-direction:column;align-items:center;gap:22px}
#loader .bar{width:160px;height:2px;background:rgba(255,255,255,.08);border-radius:2px;overflow:hidden}
#loader .bar i{display:block;height:100%;width:0;background:var(--grad);transition:width .3s ease}
#loader .pc{font-family:var(--mono);font-size:11px;letter-spacing:.3em;color:var(--muted)}

/* utility */
.mono{font-family:var(--mono)}
.hide{display:none!important}

@media(max-width:720px){
  body{overflow-x:hidden}
  .hero,.section,.wrap{padding-left:16px!important;padding-right:16px!important}
  .nav,.topbar{padding-left:14px!important;padding-right:14px!important}
  .nav-links,.desktop-only{display:none!important}
  .hero{min-height:auto;padding-top:86px!important;padding-bottom:42px!important}
  .hero-grid,.grid,.features,.cards,.panel-2,.app{grid-template-columns:1fr!important}
  .hero h1,.cta-title{font-size:clamp(2.1rem,14vw,3.4rem)!important;line-height:.96}
  .hero p,.lead{font-size:.98rem!important}
  .hero-actions,.actions,.cta-actions{display:flex;flex-direction:column;align-items:stretch;gap:10px}
  .btn,.cta,.hero-actions a,.hero-actions button{width:100%;justify-content:center}
  .browser{border-radius:12px}
  .b-bar{padding:9px;gap:8px}
  .b-tabs,.b-url{display:none}
  .app{min-height:auto}
  .main{padding:16px 14px}
  .kpis{grid-template-columns:1fr 1fr!important;gap:8px}
  .kpi{padding:12px}
  .kpi .val{font-size:1.25rem}
  .pnl{padding:14px}
  .hrow{align-items:flex-start;flex-direction:column;gap:6px}
  .hrow .track{width:100%;flex:0 0 5px}
  .foot{padding:28px 16px;align-items:flex-start;flex-direction:column}
  .batch-list,.bl-item{gap:12px}
}

@media(max-width:420px){
  .kpis{grid-template-columns:1fr!important}
  .hero h1,.cta-title{font-size:2.35rem!important}
}