/* ============================================================
   NeoGenesis Technologies — design system
   Zéro dépendance externe. Police système (souveraineté jusque dans le code).
   ============================================================ */

:root{
  --bg:#06080f; --bg-2:#0a0e1a; --bg-3:#0e1424;
  --panel:rgba(255,255,255,.035); --panel-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);
  --text:#e9eef8; --muted:#94a3b8; --dim:#64748b;
  --cyan:#22d3ee; --violet:#a855f7; --blue:#3b82f6; --green:#34d399;
  --grad:linear-gradient(120deg,var(--cyan),var(--violet));
  --grad-soft:linear-gradient(120deg,rgba(34,211,238,.16),rgba(168,85,247,.16));
  --radius:18px; --maxw:1160px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --font:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body::before{ /* ambient glow */
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(60% 50% at 80% -10%,rgba(168,85,247,.18),transparent 60%),
    radial-gradient(50% 50% at 0% 0%,rgba(34,211,238,.14),transparent 55%),
    var(--bg);
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
section{position:relative}

/* ---------- NAV ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;gap:24px;
  padding:16px clamp(18px,4vw,40px);
  background:rgba(6,8,15,.55);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:.3s;
}
.nav.scrolled{background:rgba(6,8,15,.82);border-bottom-color:var(--line)}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.05rem;margin-right:auto}
.brand-mark{width:26px;height:26px;border-radius:50%;flex:none;position:relative;
  background:var(--grad);box-shadow:0 0 22px rgba(34,211,238,.5)}
.brand-mark::after{content:"";position:absolute;inset:6px;border-radius:50%;background:var(--bg)}
.brand-mark::before{content:"";position:absolute;inset:10px;border-radius:50%;background:var(--violet)}
.brand-txt{letter-spacing:.2px}
.brand-sub{color:var(--cyan);font-weight:600;margin-left:5px;font-size:.7rem;
  text-transform:uppercase;letter-spacing:2px;vertical-align:middle}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);font-size:.93rem;font-weight:500;transition:.2s;white-space:nowrap}
.nav-links a:hover{color:var(--text);background:var(--panel)}
.nav-links a.active{color:var(--text)}
.nav-links a.nav-cta{color:var(--text);background:var(--panel-2);border:1px solid var(--line)}
.nav-links a.nav-cta:hover{border-color:var(--cyan)}
.nav-right{display:flex;align-items:center;gap:10px}
.lang-toggle{background:none;border:1px solid var(--line);color:var(--muted);
  border-radius:10px;padding:7px 11px;font:inherit;font-size:.82rem;font-weight:600;cursor:pointer;transition:.2s}
.lang-toggle:hover{color:var(--text);border-color:var(--cyan)}
.lang-toggle .lang-sep{opacity:.4;margin:0 2px}
.lang-toggle .active-lang{color:var(--cyan)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.25s}
.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)}

/* ---------- BUTTONS ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:12px;
  font-weight:600;font-size:.96rem;cursor:pointer;border:1px solid transparent;transition:.22s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#04060c;box-shadow:0 10px 30px -8px rgba(34,211,238,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(168,85,247,.55)}
.btn-ghost{background:var(--panel);color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--cyan);background:var(--panel-2)}

/* ---------- HERO ---------- */
.hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:120px clamp(18px,4vw,40px) 80px;position:relative}
.neural-bg{position:absolute;inset:0;width:100%;height:100%;z-index:-1;opacity:.55}
.hero-inner{max-width:880px}
.eyebrow{display:inline-block;font-size:.8rem;letter-spacing:2.5px;text-transform:uppercase;
  color:var(--cyan);padding:7px 16px;border:1px solid var(--line);border-radius:100px;
  background:var(--panel);margin-bottom:26px}
.hero-title{font-size:clamp(2.4rem,6vw,4.6rem);line-height:1.05;font-weight:800;letter-spacing:-1.5px;margin-bottom:22px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(1.05rem,2vw,1.3rem);color:var(--muted);max-width:620px;margin:0 auto 36px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:54px}
.stat-chips{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.chip{display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px 22px;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;min-width:108px}
.chip b{font-size:1.5rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
.chip span{font-size:.78rem;color:var(--dim);text-transform:uppercase;letter-spacing:1px}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);width:26px;height:42px;
  border:2px solid var(--line);border-radius:14px;display:flex;justify-content:center;padding-top:7px}
.scroll-hint span{width:4px;height:8px;background:var(--cyan);border-radius:3px;animation:scroll 1.6s infinite}
@keyframes scroll{0%{opacity:0;transform:translateY(0)}40%{opacity:1}80%{opacity:0;transform:translateY(12px)}}

/* ---------- BAND (souveraineté) ---------- */
.band{padding:30px clamp(18px,4vw,40px)}
.band-inner{max-width:var(--maxw);margin:0 auto}
.sov{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:stretch;
  background:var(--grad-soft);border:1px solid var(--line);border-radius:24px;padding:28px;backdrop-filter:blur(6px)}
.sov-col{padding:18px 22px}
.sov-col h3{font-size:1.15rem;margin-bottom:14px}
.sov-them h3{color:var(--muted)}
.sov-us h3{color:var(--cyan)}
.sov-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.sov-col li{position:relative;padding-left:26px;color:var(--muted);font-size:.96rem}
.sov-them li::before{content:"✕";position:absolute;left:0;color:#f87171;font-weight:700}
.sov-us li{color:var(--text)}
.sov-us li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:700}
.sov-vs{display:flex;align-items:center;font-size:2rem;color:var(--violet);font-weight:800}

/* ---------- SECTIONS ---------- */
.section{padding:clamp(70px,10vw,120px) clamp(18px,4vw,40px);max-width:var(--maxw);margin:0 auto}
.section-alt{position:relative}
.section-alt::before{content:"";position:absolute;inset:0 calc(50% - 50vw);
  background:linear-gradient(180deg,transparent,rgba(255,255,255,.02),transparent);z-index:-1}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.kicker{display:inline-block;font-size:.78rem;letter-spacing:2.5px;text-transform:uppercase;color:var(--violet);margin-bottom:14px}
.section-head h2{font-size:clamp(2rem,4.5vw,3rem);font-weight:800;letter-spacing:-1px;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:1.08rem}

/* ---------- GRID / CARDS ---------- */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.28s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:.28s}
.card:hover{transform:translateY(-5px);background:var(--panel-2)}
.card:hover::before{opacity:.6}
.card-ico{width:50px;height:50px;border-radius:13px;background:var(--grad-soft);border:1px solid var(--line);
  margin-bottom:20px;position:relative}
.card-ico::after{content:"";position:absolute;inset:0;background:var(--cyan);
  -webkit-mask-size:24px;mask-size:24px;-webkit-mask-position:center;mask-position:center;
  -webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}
.card-ico[data-ico="agents"]::after{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='6' r='3'/%3E%3Ccircle cx='5' cy='17' r='3'/%3E%3Ccircle cx='19' cy='17' r='3'/%3E%3Cpath d='M12 9v3m0 0l-5 3m5-3l5 3'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='6' r='3'/%3E%3Ccircle cx='5' cy='17' r='3'/%3E%3Ccircle cx='19' cy='17' r='3'/%3E%3Cpath d='M12 9v3m0 0l-5 3m5-3l5 3'/%3E%3C/svg%3E")}
.card-ico[data-ico="lock"]::after{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Crect x='5' y='11' width='14' height='10' rx='2'/%3E%3Cpath d='M8 11V8a4 4 0 018 0v3'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Crect x='5' y='11' width='14' height='10' rx='2'/%3E%3Cpath d='M8 11V8a4 4 0 018 0v3'/%3E%3C/svg%3E")}
.card-ico[data-ico="brain"]::after{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Cpath d='M9 4a3 3 0 00-3 3 3 3 0 00-1 5 3 3 0 002 5 3 3 0 005 .5'/%3E%3Cpath d='M15 4a3 3 0 013 3 3 3 0 011 5 3 3 0 01-2 5 3 3 0 01-5 .5'/%3E%3Cpath d='M12 4v15'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Cpath d='M9 4a3 3 0 00-3 3 3 3 0 00-1 5 3 3 0 002 5 3 3 0 005 .5'/%3E%3Cpath d='M15 4a3 3 0 013 3 3 3 0 011 5 3 3 0 01-2 5 3 3 0 01-5 .5'/%3E%3Cpath d='M12 4v15'/%3E%3C/svg%3E")}
.card-ico[data-ico="atom"]::after{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='2'/%3E%3Cellipse cx='12' cy='12' rx='10' ry='4'/%3E%3Cellipse cx='12' cy='12' rx='10' ry='4' transform='rotate(60 12 12)'/%3E%3Cellipse cx='12' cy='12' rx='10' ry='4' transform='rotate(120 12 12)'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='2'/%3E%3Cellipse cx='12' cy='12' rx='10' ry='4'/%3E%3Cellipse cx='12' cy='12' rx='10' ry='4' transform='rotate(60 12 12)'/%3E%3Cellipse cx='12' cy='12' rx='10' ry='4' transform='rotate(120 12 12)'/%3E%3C/svg%3E")}
.card-ico[data-ico="scale"]::after{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Cpath d='M12 3v18M5 21h14M7 7l-3 6h6zM17 7l3 6h-6zM7 7h10'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Cpath d='M12 3v18M5 21h14M7 7l-3 6h6zM17 7l3 6h-6zM7 7h10'/%3E%3C/svg%3E")}
.card-ico[data-ico="bolt"]::after{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M13 2L4 14h6l-1 8 9-12h-6z'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M13 2L4 14h6l-1 8 9-12h-6z'/%3E%3C/svg%3E")}
.card h3{font-size:1.18rem;margin-bottom:11px}
.card p{color:var(--muted);font-size:.96rem}

/* ---------- SERVICES ---------- */
.svc{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:.26s;position:relative}
.svc:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4);background:var(--panel-2)}
.svc-num{font-size:.85rem;font-weight:700;letter-spacing:2px;background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.svc h3{font-size:1.35rem;margin:12px 0 12px}
.svc p{color:var(--muted)}
.svc-wide{grid-column:1 / -1;background:var(--grad-soft);border-color:rgba(168,85,247,.3)}
.svc-wide h3{font-size:1.5rem}

/* ---------- CHAT ---------- */
.chat{max-width:760px;margin:0 auto;background:var(--bg-3);border:1px solid var(--line);
  border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
.chat-bar{display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--panel)}
.dot{width:11px;height:11px;border-radius:50%}
.dot-g{background:#34d399}.dot-y{background:#fbbf24}.dot-r{background:#f87171}
.chat-title{margin-left:8px;font-weight:600;font-size:.92rem}
.chat-badge{margin-left:auto;font-size:.72rem;color:var(--cyan);border:1px solid var(--line);
  padding:4px 10px;border-radius:100px;background:var(--panel)}
.chat-log{height:360px;overflow-y:auto;padding:22px;display:flex;flex-direction:column;gap:14px}
.msg{max-width:80%;padding:12px 16px;border-radius:14px;font-size:.95rem;line-height:1.5;animation:pop .3s ease}
.msg-bot{align-self:flex-start;background:var(--panel-2);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg-user{align-self:flex-end;background:var(--grad);color:#05070d;border-bottom-right-radius:4px;font-weight:500}
.msg.typing{color:var(--dim)}
@keyframes pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.chat-input{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);background:var(--panel)}
.chat-input input{flex:1;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;
  padding:13px 16px;color:var(--text);font:inherit;font-size:.95rem}
.chat-input input:focus{outline:none;border-color:var(--cyan)}
.chat-input button{flex:none;width:48px;border:0;border-radius:12px;background:var(--grad);cursor:pointer;display:grid;place-items:center;transition:.2s}
.chat-input button:hover{transform:scale(1.06)}
.chat-input button svg{width:20px;height:20px;fill:#05070d}
.live-note{text-align:center;color:var(--dim);font-size:.9rem;margin-top:24px;max-width:600px;margin-left:auto;margin-right:auto}

/* ---------- ABOUT ---------- */
.about{display:grid;grid-template-columns:1.4fr 1fr;gap:50px;align-items:center;max-width:var(--maxw);margin:0 auto}
.about-txt h2{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800;letter-spacing:-1px;margin-bottom:20px}
.about-txt p{color:var(--muted);margin-bottom:16px}
.about-vals{display:flex;flex-direction:column;gap:14px}
.val{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px 22px;border-left:3px solid var(--cyan)}
.val b{display:block;margin-bottom:4px}
.val span{color:var(--muted);font-size:.92rem}

/* ---------- CONTACT ---------- */
.contact-form{max-width:640px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.cf-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.contact-form label{display:flex;flex-direction:column;gap:7px;font-size:.88rem;color:var(--muted)}
.contact-form input,.contact-form select,.contact-form textarea{
  background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:13px 15px;
  color:var(--text);font:inherit;font-size:.96rem;resize:vertical}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--cyan)}
.contact-form .btn{align-self:flex-start;margin-top:4px}
.contact-alt{text-align:center;margin-top:34px;display:flex;flex-direction:column;gap:6px}
.contact-alt a{font-size:1.15rem;font-weight:600;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.contact-loc{color:var(--dim);font-size:.9rem}

/* ---------- FOOTER ---------- */
.footer{border-top:1px solid var(--line);padding:46px clamp(18px,4vw,40px);margin-top:40px;background:var(--bg-2)}
.foot-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;gap:30px;flex-wrap:wrap;justify-content:space-between}
.foot-brand{display:flex;align-items:center;gap:12px}
.foot-brand strong{display:block}
.foot-brand span{color:var(--muted);font-size:.85rem}
.foot-links{display:flex;gap:20px;flex-wrap:wrap}
.foot-links a{color:var(--muted);font-size:.9rem;transition:.2s}
.foot-links a:hover{color:var(--cyan)}
.foot-copy{color:var(--dim);font-size:.82rem;width:100%;text-align:center;margin-top:10px;border-top:1px solid var(--line);padding-top:20px}

/* ---------- REVEAL ANIMATION ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:880px){
  .grid-3{grid-template-columns:1fr 1fr}
  .about{grid-template-columns:1fr;gap:34px}
  .sov{grid-template-columns:1fr}
  .sov-vs{transform:rotate(90deg);justify-self:center}
}
@media(max-width:720px){
  .burger{display:flex}
  .nav-links{position:fixed;inset:64px 0 auto 0;flex-direction:column;align-items:stretch;gap:4px;
    padding:18px clamp(18px,4vw,40px) 28px;background:rgba(6,8,15,.97);backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.35s cubic-bezier(.2,.8,.2,1);visibility:hidden}
  .nav-links.open{transform:none;visibility:visible}
  .nav-links a{padding:13px 16px;font-size:1rem}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .cf-row{grid-template-columns:1fr}
  .foot-inner{flex-direction:column;text-align:center}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto}.reveal{opacity:1;transform:none}}