/* Ǝchange — site vitrine. Thème bleu royal. Mobile-first. */
:root{
  --blue:#1A56DB;
  --blue-dark:#1340a8;
  --blue-soft:#e8efff;
  --ink:#0f172a;
  --muted:#475569;
  --line:#e2e8f0;
  --bg:#ffffff;
  --bg-alt:#f6f8ff;
  --radius:16px;
  --shadow:0 10px 30px rgba(26,86,219,.10);
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}

/* --- mécanisme de langue : on affiche FR ou EN selon html[data-lang] --- */
[data-lang="fr"] .en{display:none}
[data-lang="en"] .fr{display:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand svg{width:30px;height:30px;display:block}
.brand .wordmark{letter-spacing:-.5px}
.brand .wordmark b{color:var(--blue)}

/* Sélecteur de langue */
.lang-switch{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff}
.lang-switch button{
  border:0;background:transparent;cursor:pointer;
  padding:7px 14px;font-weight:700;font-size:.85rem;color:var(--muted);
}
.lang-switch button.active{background:var(--blue);color:#fff}

/* Boutons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:999px;font-weight:700;font-size:1rem;
  border:1px solid transparent;cursor:pointer;transition:transform .05s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark);text-decoration:none}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue)}
.btn-ghost:hover{background:var(--blue-soft);text-decoration:none}

/* Hero */
.hero{padding:64px 0 40px;background:
  radial-gradient(1200px 400px at 80% -10%, var(--blue-soft), transparent),
  var(--bg)}
.hero h1{font-size:clamp(1.9rem,6vw,3.2rem);line-height:1.1;margin:0 0 16px;letter-spacing:-1px}
.hero h1 .hl{color:var(--blue)}
.hero p.sub{font-size:clamp(1.05rem,2.6vw,1.3rem);color:var(--muted);margin:0 0 28px;max-width:640px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:14px}
.hero .note{font-size:.9rem;color:var(--muted)}
.tagline{margin-top:26px;font-weight:800;color:var(--blue);font-size:1.05rem}

/* Badges stores */
.stores{display:flex;flex-wrap:wrap;gap:12px;margin:8px 0 0}
.store-badge{
  display:flex;align-items:center;gap:10px;
  background:var(--ink);color:#fff;border-radius:14px;padding:10px 16px;min-width:180px;
  position:relative;
}
.store-badge:hover{text-decoration:none;background:#000}
.store-badge svg{width:24px;height:24px;flex:0 0 auto;fill:#fff}
.store-badge .label{display:flex;flex-direction:column;line-height:1.15}
.store-badge .label small{font-size:.68rem;opacity:.85}
.store-badge .label span{font-size:1rem;font-weight:700}
.store-badge .soon{
  position:absolute;top:-9px;right:-6px;background:var(--blue);color:#fff;
  font-size:.62rem;font-weight:800;padding:2px 8px;border-radius:999px;letter-spacing:.3px;
}

/* Sections */
section.block{padding:54px 0}
section.block.alt{background:var(--bg-alt)}
.section-title{font-size:clamp(1.5rem,4vw,2rem);margin:0 0 8px;letter-spacing:-.5px}
.section-lead{color:var(--muted);margin:0 auto 34px;max-width:620px}
.center{text-align:center}

/* Grille d'arguments */
.grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:680px){.grid.cols-2{grid-template-columns:1fr 1fr}}
@media(min-width:900px){.grid.cols-4{grid-template-columns:repeat(4,1fr)}.grid.cols-3{grid-template-columns:repeat(3,1fr)}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
}
.card .ic{
  width:46px;height:46px;border-radius:12px;background:var(--blue-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:1.4rem;
}
.card h3{margin:0 0 8px;font-size:1.15rem}
.card p{margin:0;color:var(--muted);font-size:.97rem}

/* Étapes */
.steps{counter-reset:step;display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:780px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{position:relative;padding-left:56px}
.step::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  background:var(--blue);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.step h4{margin:0 0 4px}
.step p{margin:0;color:var(--muted);font-size:.95rem}

/* Plans */
.plans{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:780px){.plans{grid-template-columns:repeat(3,1fr)}}
.plan{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;text-align:center}
.plan.featured{border-color:var(--blue);box-shadow:var(--shadow)}
.plan h3{margin:0 0 6px}
.plan .pill{display:inline-block;background:var(--blue-soft);color:var(--blue);font-weight:700;font-size:.78rem;padding:4px 12px;border-radius:999px;margin-bottom:10px}
.plan p{color:var(--muted);margin:0;font-size:.95rem}
.pay-note{margin-top:24px;text-align:center;color:var(--muted);font-size:.9rem}

/* CTA final */
.cta-band{background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;border-radius:24px;padding:40px 28px;text-align:center;margin:0 20px}
.cta-band h2{margin:0 0 10px;font-size:clamp(1.5rem,4vw,2rem)}
.cta-band p{margin:0 0 22px;opacity:.92}
.cta-band .btn-primary{background:#fff;color:var(--blue)}
.cta-band .btn-primary:hover{background:#eef3ff}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:38px 0;background:#fff;margin-top:20px}
.site-footer .cols{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start}
.site-footer .brand{font-size:1.1rem}
.site-footer nav{display:flex;flex-wrap:wrap;gap:18px}
.site-footer nav a{color:var(--muted);font-weight:600}
.site-footer .legal-note{color:var(--muted);font-size:.85rem;margin-top:20px}

/* Pages légales */
.legal{padding:40px 0 60px}
.legal .doc{max-width:820px;margin:0 auto}
.legal h1{font-size:clamp(1.6rem,5vw,2.4rem);margin:0 0 6px}
.legal .updated{color:var(--muted);font-size:.9rem;margin:0 0 8px}
.legal .disclaimer{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:12px;padding:14px 16px;font-size:.92rem;margin:18px 0 30px}
.legal h2{font-size:1.25rem;margin:34px 0 10px;padding-top:8px;border-top:1px solid var(--line)}
.legal h3{font-size:1.05rem;margin:20px 0 6px}
.legal p,.legal li{color:#1f2937}
.legal ul{padding-left:22px}
.legal .back{display:inline-block;margin-bottom:18px;font-weight:700}