/* ============================================================
   GAM-TECH — Système de design partagé
   Palette & typo alignées sur la papeterie (cartes de visite,
   papier à en-tête) : cobalt + bleu ciel, navy, IBM Plex.
   ============================================================ */

:root{
  --navy:#0a1c44;
  --navy-700:#0f2557;
  --cobalt:#1457d6;
  --sky:#1f9fe0;
  --ink:#111a2b;
  --muted:#5b6678;
  --faint:#8a93a3;
  --hair:#e4e9f2;
  --paper:#f6f8fc;
  --paper-2:#eef3fb;
  --white:#ffffff;
  --grad:linear-gradient(135deg,var(--cobalt),var(--sky));
  --grad-deep:linear-gradient(165deg,#07142f 0%,var(--navy) 45%,#143a86 100%);
  --shadow-sm:0 1px 3px rgba(10,28,68,.06),0 1px 2px rgba(10,28,68,.04);
  --shadow:0 12px 40px rgba(10,28,68,.10);
  --shadow-lg:0 24px 70px rgba(10,28,68,.16);
  --radius:14px;
  --radius-lg:22px;
  --maxw:1140px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'IBM Plex Sans',-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--cobalt);text-decoration:none;transition:color .2s}
a:hover{color:var(--sky)}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.15;color:var(--navy);font-weight:700;letter-spacing:-.01em}
strong{font-weight:600}

/* ---------- utilitaires ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;
  color:var(--cobalt);display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--cobalt);display:inline-block}
.section{padding:96px 0}
.section-head{max-width:680px;margin-bottom:48px}
.section-head h2{font-size:clamp(1.7rem,3.6vw,2.5rem);margin:16px 0 14px}
.section-head p{color:var(--muted);font-size:1.05rem}
.center{text-align:center;margin-left:auto;margin-right:auto}

.btn{
  display:inline-flex;align-items:center;gap:10px;font-family:inherit;font-weight:600;
  font-size:1rem;padding:14px 28px;border-radius:100px;cursor:pointer;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .2s;
}
.btn svg{width:18px;height:18px;transition:transform .25s var(--ease)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 26px rgba(20,87,214,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(20,87,214,.42);color:#fff}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--navy);border-color:var(--hair)}
.btn-ghost:hover{border-color:var(--cobalt);color:var(--cobalt);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.25)}
.btn-light:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}

/* ---------- motif de marque : tracés circuit ---------- */
.circuit{position:absolute;pointer-events:none;opacity:.5;color:var(--sky)}
.brand-rail{
  position:fixed;left:0;top:0;bottom:0;width:64px;z-index:30;
  display:none;pointer-events:none;
}
@media(min-width:1280px){.brand-rail{display:block}}
.brand-rail .spine{position:absolute;left:28px;top:120px;bottom:120px;width:2px;
  background:linear-gradient(var(--sky),transparent 70%);}
.brand-rail .node{position:absolute;left:23px;width:12px;height:12px;border-radius:50%;
  border:2px solid var(--cobalt);background:#fff}
.brand-rail .label{
  position:absolute;left:18px;bottom:120px;transform:rotate(180deg);writing-mode:vertical-rl;
  font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.32em;color:var(--faint);
  text-transform:uppercase;white-space:nowrap;
}
.brand-rail .label b{color:var(--cobalt);font-weight:600}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;padding:16px 0;transition:all .3s var(--ease)}
.nav.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--hair)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:42px;height:42px;border-radius:11px;overflow:hidden;flex:0 0 auto;
  animation:heartbeat 2.6s var(--ease) infinite}
.brand-logo img{width:100%;height:100%;object-fit:contain}
.brand-name{display:flex;flex-direction:column;line-height:1.1}
.brand-name b{font-size:16px;color:var(--navy);font-weight:700;letter-spacing:.02em}
.brand-name span{font-family:'IBM Plex Mono',monospace;font-size:9.5px;letter-spacing:.22em;
  color:var(--faint);text-transform:uppercase}
.nav.scrolled .brand-name b{color:var(--navy)}
.nav-links{display:none;align-items:center;gap:30px}
@media(min-width:920px){.nav-links{display:flex}}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--ink)}
.nav.transparent .brand-name b,.nav.transparent .nav-links a{color:rgba(255,255,255,.92)}
.nav.transparent .brand-name span{color:rgba(255,255,255,.55)}
.nav.transparent.scrolled .brand-name b,.nav.transparent.scrolled .nav-links a{color:var(--ink)}
.nav.transparent.scrolled .brand-name span{color:var(--faint)}
.nav-links a:hover{color:var(--cobalt)}
.nav-cta{font-size:14px;padding:10px 20px}

/* Sélecteur de langue FR/EN */
.lang-link{display:inline-flex;align-items:center;justify-content:center;font-family:'IBM Plex Mono',monospace;
  font-size:12px;font-weight:500;letter-spacing:.06em;color:var(--ink);border:1px solid var(--hair);
  border-radius:8px;padding:7px 10px;transition:border-color .2s,color .2s;flex:0 0 auto}
.lang-link:hover{border-color:var(--cobalt);color:var(--cobalt)}
.nav.transparent:not(.scrolled):not(.open) .lang-link{color:rgba(255,255,255,.9);border-color:rgba(255,255,255,.3)}
.nav.transparent:not(.scrolled):not(.open) .lang-link:hover{border-color:#fff;color:#fff}

@keyframes heartbeat{0%,100%{transform:scale(1)}10%{transform:scale(1.06)}25%{transform:scale(1)}35%{transform:scale(1.04)}50%{transform:scale(1)}}

/* ---------- cartes ---------- */
.grid{display:grid;gap:22px}
.card{
  background:var(--white);border:1px solid var(--hair);border-radius:var(--radius);
  padding:30px 26px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#cfe0fa}
.card .ico{
  width:50px;height:50px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--paper-2);color:var(--cobalt);margin-bottom:18px;
}
.card .ico svg{width:26px;height:26px;stroke-width:1.6}
.card h3{font-size:1.15rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.96rem}

/* ---------- pied de page ---------- */
.footer{background:var(--navy);color:rgba(255,255,255,.62);padding:64px 0 0}
.footer a{color:rgba(255,255,255,.78)}
.footer a:hover{color:#fff}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:48px}
@media(max-width:760px){.footer-top{grid-template-columns:1fr;gap:32px}}
.footer h4{color:#fff;font-size:13px;letter-spacing:.06em;margin-bottom:16px;font-weight:600}
.footer .f-brand b{color:#fff;font-size:18px}
.footer .f-brand p{margin-top:12px;font-size:.92rem;max-width:320px}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:9px;font-size:.93rem}
.legal-band{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0;margin-top:8px;
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.02em;
  color:rgba(255,255,255,.5);display:flex;flex-wrap:wrap;gap:6px 14px;justify-content:center;text-align:center;
}

/* ---------- animation au scroll ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ============================================================
   Menu mobile (hamburger) + responsive
   ============================================================ */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border:none;background:transparent;cursor:pointer;padding:0;flex:0 0 auto}
.nav-toggle span{display:block;width:22px;height:2px;border-radius:2px;background:var(--navy);
  transition:transform .25s var(--ease),opacity .2s}
.nav.transparent:not(.scrolled):not(.open) .nav-toggle span{background:#fff}
.nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .nav-toggle span:nth-child(2){opacity:0}
.nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.only-mobile{display:none}

@media(max-width:900px){
  .section{padding:72px 0}
  .hero{padding:118px 0 70px}
}

@media(max-width:919px){
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:0;background:rgba(255,255,255,.98);backdrop-filter:blur(12px);
    border-top:1px solid var(--hair);box-shadow:var(--shadow);padding:8px 0;display:none}
  .nav.open{background:rgba(255,255,255,.98);backdrop-filter:blur(12px)}
  .nav.open .nav-links{display:flex}
  .nav.transparent.open .brand-name b{color:var(--navy)}
  .nav.transparent.open .brand-name span{color:var(--faint)}
  .nav-links a{width:100%;padding:14px 24px;font-size:15px;color:var(--ink)!important;border-radius:0}
  .nav-links a:hover{background:var(--paper)}
  .only-mobile{display:block;margin:8px 18px 4px;padding:13px 24px!important;text-align:center;
    background:var(--grad);color:#fff!important;border-radius:100px;font-weight:600;width:auto}
  .only-mobile:hover{background:var(--grad)}
}

@media(max-width:600px){
  .wrap{padding:0 18px}
  .section{padding:54px 0}
  .section-head{margin-bottom:34px}
  .hero{padding:100px 0 56px;min-height:auto}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%;justify-content:center}
  .cta-final .box{padding:40px 22px}
  .footer{padding:48px 0 0}
  .footer-top{padding-bottom:36px}
}