/* ═══════════════════════════════════════════════════════
   VELOCITA TECH — feuille unique
   Palette « Jarvis Core » : noir spatial, cyan, or, violet.
   ═══════════════════════════════════════════════════════ */

:root{
  --bg:#05050a;
  --bg-2:#070b14;
  --panel:rgba(8,14,22,.72);
  --line:rgba(0,255,255,.13);
  --line-soft:rgba(0,255,255,.07);
  --cyan:#00ffff;
  --cyan-dim:#0a7f8b;
  --gold:#ffd700;
  --violet:#bf00ff;
  --ink:#ddefff;
  --ink-2:#8fb3c4;
  --ink-3:#5c7c8c;
  --err:#ff2d55;
  --max:1180px;
  --pad:clamp(20px,4vw,56px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Rajdhani',ui-sans-serif,system-ui,sans-serif;
  font-size:17px;line-height:1.6;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.015em;line-height:1.05}
p{margin:0}
ul,ol,dl{margin:0;padding:0;list-style:none}

/* ── décor de fond ─────────────────────────────────────── */
.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 10%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 10%,transparent 78%);
  opacity:.55;
}
.vignette{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 45% at 62% 18%,rgba(10,20,60,.55),transparent 70%),
    radial-gradient(ellipse 50% 40% at 12% 8%,rgba(0,255,255,.06),transparent 70%),
    radial-gradient(ellipse 120% 90% at 50% 100%,rgba(0,0,0,.9),transparent 60%);
}
main,header,footer{position:relative;z-index:1}

/* ── barre haute ───────────────────────────────────────── */
.topbar{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:18px var(--pad);
  border-bottom:1px solid rgba(0,255,255,.08);
  background:linear-gradient(180deg,rgba(5,5,10,.92),rgba(5,5,10,.62));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  position:relative;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(0,255,255,.45);display:grid;place-items:center;
}
.brand-mark::after{
  content:"";position:absolute;inset:-5px;border-radius:50%;
  border:1px solid rgba(191,0,255,.35);border-top-color:transparent;border-bottom-color:transparent;
}
.bm-core{width:8px;height:8px;border-radius:50%;background:var(--gold);
  box-shadow:0 0 10px rgba(255,215,0,.85),0 0 22px rgba(255,183,0,.45)}
.brand-txt{font-size:19px;font-weight:700;letter-spacing:.16em}
.brand-thin{font-weight:300;color:var(--ink-2)}
.nav{display:flex;align-items:center;gap:28px}
.nav a{font-size:14px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);transition:color .2s}
.nav a:hover,.nav a:focus-visible{color:var(--cyan)}
.nav-cta{
  padding:9px 16px;border:1px solid rgba(0,255,255,.35);border-radius:2px;
  color:var(--cyan)!important;background:rgba(0,255,255,.04);
}
.nav-cta:hover{background:rgba(0,255,255,.1)}
.burger{display:none;width:42px;height:38px;background:none;border:1px solid var(--line);border-radius:2px;cursor:pointer;padding:9px}
.burger span{display:block;height:1px;background:var(--cyan);margin:4px 0}

/* ── hero ──────────────────────────────────────────────── */
.hero{
  max-width:var(--max);margin:0 auto;padding:clamp(48px,7vw,104px) var(--pad) clamp(56px,7vw,96px);
  display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(32px,5vw,72px);align-items:center;
  min-height:min(84vh,760px);
}
.overline{
  font-family:'JetBrains Mono',ui-monospace,monospace;font-size:11px;letter-spacing:.22em;
  color:var(--ink-3);display:flex;align-items:center;gap:10px;margin-bottom:26px;
}
.overline .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);animation:pulse 2.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
.hero h1{font-size:clamp(38px,6.2vw,74px);font-weight:600;letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:var(--cyan);text-shadow:0 0 32px rgba(0,255,255,.28)}
.lede{margin-top:24px;max-width:52ch;font-size:clamp(17px,1.5vw,20px);color:var(--ink-2);line-height:1.62}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:13px 24px;border-radius:2px;
  font-size:14px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;
  border:1px solid transparent;transition:transform .18s,background .2s,border-color .2s;
}
.btn-primary{background:var(--cyan);color:#02060a;border-color:var(--cyan);box-shadow:0 0 26px rgba(0,255,255,.22)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 34px rgba(0,255,255,.34)}
.btn-ghost{border-color:rgba(0,255,255,.28);color:var(--ink)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.hero-stats{display:flex;gap:clamp(24px,4vw,48px);margin-top:44px;flex-wrap:wrap}
.hero-stats div{border-left:1px solid var(--line);padding-left:14px}
.hero-stats dt{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.18em;color:var(--ink-3);text-transform:uppercase}
.hero-stats dd{margin:6px 0 0;font-size:22px;font-weight:600;letter-spacing:.02em}

/* ── noyau orbital ─────────────────────────────────────── */
.hero-visual{position:relative;display:grid;place-items:center;min-height:420px}
.core{position:relative;width:min(420px,74vw);aspect-ratio:1;display:grid;place-items:center}
.core::before{
  content:"";position:absolute;inset:12%;border-radius:50%;
  background:radial-gradient(circle,rgba(191,0,255,.16),transparent 62%);
  filter:blur(18px);
}
.ring{position:absolute;border-radius:50%;border:1px solid rgba(0,255,255,.16)}
.r1{inset:6%;border-top-color:rgba(0,255,255,.7);border-right-color:rgba(0,255,255,.35);animation:spin 22s linear infinite}
.r2{inset:18%;border-color:rgba(191,0,255,.28);border-left-color:rgba(191,0,255,.85);animation:spin 16s linear infinite reverse}
.r3{inset:31%;border-color:rgba(0,255,255,.12);border-bottom-color:rgba(255,215,0,.6);animation:spin 11s linear infinite}
.r4{inset:43%;border-color:rgba(0,255,255,.28);border-style:dashed;animation:spin 34s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.nucleus{
  width:14%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle at 40% 35%,#fffbe0,var(--gold) 42%,#b8860b 78%);
  box-shadow:0 0 26px rgba(255,215,0,.7),0 0 68px rgba(255,183,0,.35),0 0 120px rgba(255,150,0,.16);
}
.ring-tick{position:absolute;width:1px;height:14px;background:var(--cyan);opacity:.55;top:0;left:50%}
.t2{bottom:0;top:auto}
.readouts{position:absolute;bottom:-4px;left:0;right:0;display:grid;gap:6px;font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.08em}
.ro{display:flex;justify-content:space-between;gap:12px;padding:6px 10px;border:1px solid var(--line-soft);background:rgba(5,10,16,.5)}
.ro-k{color:var(--ink-3)}
.ro-v{color:var(--ink-2)}
.ro-v.ok{color:var(--cyan)}

/* ── sections ──────────────────────────────────────────── */
.section{max-width:var(--max);margin:0 auto;padding:clamp(64px,8vw,120px) var(--pad);border-top:1px solid var(--line-soft)}
.section-alt{background:linear-gradient(180deg,rgba(7,11,20,.55),rgba(5,5,10,0));border-top:1px solid var(--line-soft)}
.sec-head{max-width:760px;margin-bottom:clamp(36px,5vw,64px)}
.sec-num{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.24em;color:var(--cyan-dim);margin-bottom:18px}
.sec-head h2,.contact h2{font-size:clamp(30px,4.2vw,52px);letter-spacing:-.025em}
.sec-lede{margin-top:20px;color:var(--ink-2);font-size:17.5px;max-width:62ch}

/* ── cartes ────────────────────────────────────────────── */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{
  position:relative;padding:28px 26px 30px;background:var(--panel);
  border:1px solid var(--line);border-radius:2px;
  transition:border-color .25s,transform .25s;
}
.card::before{
  content:"";position:absolute;top:-1px;left:-1px;width:16px;height:16px;
  border-top:1px solid var(--cyan);border-left:1px solid var(--cyan);opacity:.8;
}
.card:hover{border-color:rgba(0,255,255,.32);transform:translateY(-3px)}
.card-k{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.22em;color:var(--gold);margin-bottom:14px}
.card h3{font-size:21px;margin-bottom:12px;letter-spacing:-.01em}
.card p{color:var(--ink-2);font-size:15.5px;line-height:1.62}
.ticks{margin-top:18px;display:grid;gap:8px}
.ticks li{position:relative;padding-left:16px;font-size:14.5px;color:var(--ink-3)}
.ticks li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;background:var(--cyan);box-shadow:0 0 6px var(--cyan)}
.ticks-lg li{font-size:16px;color:var(--ink-2);padding-left:20px}
.ticks-lg li::before{width:6px;height:6px;top:.7em}

/* ── modules ───────────────────────────────────────────── */
.mod-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.mod-col{padding:18px 16px;border:1px solid var(--line-soft);background:rgba(6,10,18,.42)}
.mod-cat{font-family:'JetBrains Mono',monospace;font-size:9.5px;letter-spacing:.18em;color:var(--cyan-dim);margin-bottom:12px;min-height:28px}
.mod-col li{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-2);padding:5px 0;border-top:1px solid rgba(0,255,255,.05)}
.mod-col li:first-child{border-top:0}

/* ── flux ──────────────────────────────────────────────── */
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow li{position:relative;padding:26px 18px 30px;border-left:1px solid var(--line-soft)}
.flow li:first-child{border-left:0}
.fl-n{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.18em;color:var(--cyan)}
.flow h4{margin:16px 0 8px;font-size:18px;font-weight:600}
.flow p{font-size:14px;color:var(--ink-3);line-height:1.55}
.arch-note{margin-top:28px;padding:20px 22px;border-left:2px solid var(--gold);background:rgba(255,215,0,.035)}
.arch-note p{font-size:16px;color:var(--ink-2)}
.arch-note strong{color:var(--ink)}

/* ── split ─────────────────────────────────────────────── */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,64px);align-items:start}
.body-lg{font-size:19px;line-height:1.65;color:var(--ink-2);max-width:54ch}
.spec-panel{border:1px solid var(--line);background:var(--panel);padding:24px}
.sp-title{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.22em;color:var(--gold);margin-bottom:16px}
.spec-panel dl>div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-top:1px solid var(--line-soft);font-size:14.5px}
.spec-panel dt{color:var(--ink-3);font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;padding-top:3px}
.spec-panel dd{margin:0;color:var(--ink);text-align:right}

/* ── contact ───────────────────────────────────────────── */
.contact{border-top:1px solid var(--line)}
.contact-inner{max-width:820px}
.form{margin-top:36px;display:grid;gap:16px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:grid;gap:7px}
.field span{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.18em;color:var(--ink-3);text-transform:uppercase}
.field input,.field textarea{
  width:100%;padding:12px 14px;background:rgba(6,10,18,.7);color:var(--ink);
  border:1px solid var(--line);border-radius:2px;font-family:'Rajdhani',sans-serif;font-size:16px;
  transition:border-color .2s,background .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--cyan);background:rgba(0,255,255,.03)}
.field input::placeholder,.field textarea::placeholder{color:#33505c}
.form .btn{justify-self:start;margin-top:6px}
.form-note{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-3);letter-spacing:.04em}
.form-note.ok{color:var(--cyan)}
.form-note.err{color:var(--err)}

/* ── pied ──────────────────────────────────────────────── */
.footer{border-top:1px solid var(--line);padding:clamp(36px,5vw,60px) var(--pad) 34px;max-width:var(--max);margin:0 auto}
.foot-top{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;padding-bottom:28px;border-bottom:1px solid var(--line-soft)}
.foot-brand p{margin-top:12px;font-size:14.5px;color:var(--ink-3);line-height:1.6}
.foot-nav{display:flex;gap:22px;flex-wrap:wrap;align-items:flex-start}
.foot-nav a{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.foot-nav a:hover{color:var(--cyan)}
.foot-legal{margin-top:22px;display:grid;gap:6px;font-size:12.5px;color:#456470;line-height:1.6}
.foot-legal strong{color:var(--ink-2);font-weight:600}

/* ── révélations ───────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ── responsive ────────────────────────────────────────── */
@media (max-width:1080px){
  .mod-grid{grid-template-columns:repeat(3,1fr)}
  .flow{grid-template-columns:repeat(3,1fr)}
  .flow li:nth-child(4){border-left:0}
  .flow li:nth-child(n+4){border-top:1px solid var(--line-soft)}
}
@media (max-width:900px){
  .hero{grid-template-columns:1fr;min-height:0;padding-top:44px}
  .hero-visual{order:-1;min-height:300px;margin-bottom:8px}
  .core{width:min(300px,70vw)}
  .cards{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .nav{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(5,7,12,.98);border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .nav.open{max-height:340px}
  .nav a{padding:14px var(--pad);border-top:1px solid var(--line-soft)}
  .nav-cta{margin:12px var(--pad) 16px;text-align:center}
  .burger{display:block}
}
@media (max-width:620px){
  body{font-size:16px}
  .mod-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:1fr}
  .flow li{border-left:0;border-top:1px solid var(--line-soft)}
  .flow li:first-child{border-top:0}
  .frow{grid-template-columns:1fr}
  .hero-stats{gap:20px}
  .readouts{position:static;margin-top:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}


/* ── bascule FR / EN ───────────────────────────────────── */
.lang-toggle{
  font-family:'JetBrains Mono',ui-monospace,monospace;font-size:11px;letter-spacing:.18em;
  padding:9px 13px;background:none;border:1px solid var(--line);border-radius:2px;
  color:var(--ink-2);cursor:pointer;transition:color .2s,border-color .2s,background .2s;
  flex:0 0 auto;
}
.lang-toggle:hover,.lang-toggle:focus-visible{
  color:var(--cyan);border-color:rgba(0,255,255,.38);background:rgba(0,255,255,.05);
}
@media (max-width:860px){.lang-toggle{margin-left:auto}}

@media (max-width:620px){
  .topbar{gap:10px;padding:14px var(--pad)}
  .brand{gap:9px}
  .brand-txt{font-size:15px;letter-spacing:.1em}
  .brand-mark{width:22px;height:22px}
  .lang-toggle{padding:8px 10px;font-size:10px;letter-spacing:.14em}
  .burger{width:38px;height:34px}
}