:root{
  --bg:#0A0A0B;           /* fond sombre chic */
  --text:#EDEFF3;         /* texte principal */
  --muted:#B8C0D0;
  --panel:#111216;
  --line:#1B1E26;
  --royal:#2B50FF;        /* bleu roi */
  --accent:#7AA2FF;
  --ok:#22c55e;
  --warn:#f59e0b;
  --danger:#ef4444;
  --radius:16px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, sans-serif;
  background:radial-gradient(1200px 600px at 70% -10%, rgba(43,80,255,.08), transparent 60%), var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

a{color:var(--text);text-decoration:none}
a:hover{color:var(--accent)}

.container{width:min(1100px, 92%);margin-inline:auto}

.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(10,10,11,.7); backdrop-filter: blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px; padding:14px 0}
.brand{font-weight:800; letter-spacing:.2px; display:flex; align-items:center; gap:10px}
.logo-dot{width:10px;height:10px;border-radius:999px;background:var(--royal);box-shadow:0 0 20px var(--royal)}

.nav ul{display:flex;gap:18px;align-items:center;list-style:none;margin:0;padding:0}
.nav a{padding:8px 12px;border-radius:12px;border:1px solid transparent}
.nav a:hover{border-color:var(--line);background:#0E0F13}

.nav-toggle{display:none; background:none; border:0; cursor:pointer}
.nav-toggle .bar{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;transition:transform .3s ease}

.btn{padding:12px 16px;border-radius:14px;border:1px solid var(--line);transition:transform .15s ease, box-shadow .2s ease, border-color .2s ease; display:inline-flex; align-items:center; gap:8px}
.btn:hover{transform:translateY(-1px); box-shadow: var(--shadow)}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(120deg, var(--royal), var(--accent)); border-color:transparent; color:white; font-weight:700}
.btn-ghost{background:transparent}
.btn-accent{border-color:transparent;background:transparent; color:var(--royal); font-weight:700}

.hero{padding:72px 0}
.hero-inner{display:grid;grid-template-columns:1.2fr .8fr; gap:32px; align-items:center}
.title-xl{font-size:clamp(32px, 5vw, 60px); line-height:1.05; margin:0 0 12px}
.lead{font-size:18px;color:var(--muted); max-width:60ch}
.cta-row{display:flex; gap:12px; margin-top:18px}

.hero-visual{position:relative; height:360px}
.orb{position:absolute; inset:auto 0 0 auto; width:260px; height:260px; background:radial-gradient(circle at 30% 30%, rgba(122,162,255,.7), rgba(43,80,255,.35) 40%, transparent 60%); filter:blur(10px); border-radius:999px; animation:float 7s ease-in-out infinite}
.card-tilt{position:absolute; left:0; bottom:0; width:320px; height:200px; background:linear-gradient(180deg, #151822, #0D0F14); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow); transform-style:preserve-3d; perspective:1000px; overflow:hidden}
.card-tilt .badge{position:absolute; top:12px; left:12px; background:rgba(43,80,255,.12); color:#DDE5FF; padding:6px 10px; border-radius:12px; border:1px solid rgba(43,80,255,.3)}
.grid-sparkle{position:absolute; inset:0; background-image:linear-gradient(transparent 95%, rgba(255,255,255,.06) 95%), linear-gradient(90deg, transparent 95%, rgba(255,255,255,.06) 95%); background-size:20px 20px; mix-blend:screen; animation:shimmer 4s linear infinite}

@keyframes shimmer{from{transform:translateX(-20px)} to{transform:translateX(0)}}
@keyframes float{0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)}}

.features{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; padding:20px 0 60px}
.feature{background:linear-gradient(180deg, #0E1016, #0A0B0E); border:1px solid var(--line); border-radius:var(--radius); padding:20px}
.feature h2{margin-top:0}

.page-head{padding:36px 0 16px}
.grid-2{display:grid; grid-template-columns:1.1fr .9fr; align-items:start}
.gap-xl{gap:36px}

.checklist{padding-left:18px}
.checklist li{margin:.5rem 0}

.cards{display:grid; grid-template-columns:repeat(3, 1fr); gap:18px; padding-bottom:40px}
.card{border:1px solid var(--line); border-radius:18px; background:#0E1016; transition:transform .2s ease, box-shadow .2s ease}
.card:hover{transform:translateY(-4px); box-shadow:var(--shadow)}
.card-link{display:grid; grid-template-rows:auto 1fr}
.card-media img{display:block; width:100%; height:auto; border-bottom:1px solid var(--line)}
.card-body{padding:16px}
.tag{display:inline-block; font-size:12px; padding:4px 8px; border-radius:999px; background:rgba(43,80,255,.15); color:#DDE5FF; border:1px solid rgba(43,80,255,.25)}

.form{max-width:680px}
.form-field{margin-bottom:16px}
label{display:block; font-weight:600; margin-bottom:6px}
input, textarea{
  width:100%; background:#0E1016; color:var(--text); border:1px solid var(--line);
  padding:12px 14px; border-radius:12px; outline:0; transition:border-color .2s ease, box-shadow .2s ease
}
input:focus, textarea:focus{border-color:rgba(43,80,255,.65); box-shadow:0 0 0 3px rgba(43,80,255,.15)}
.error-msg{display:none; color:#ffb4b4; font-size:12px}
.form-actions{display:flex; align-items:center; gap:12px}
#form-status{min-height:24px; color:var(--muted)}

.site-footer{border-top:1px solid var(--line); padding:22px 0; margin-top:40px}
.footer-inner{display:flex; align-items:center; justify-content:space-between}
.footer-nav{display:flex; gap:12px}
.txt-gradient{background:linear-gradient(90deg, #fff, #9fb5ff); -webkit-background-clip:text; background-clip:text; color:transparent}
.txt-royal{color:var(--royal)}

.reveal{opacity:0; transform:translateY(12px); transition:opacity .6s ease, transform .6s ease}
.reveal.in{opacity:1; transform:translateY(0)}

.parallax-card{position:relative; transform-style:preserve-3d; perspective:800px}
.parallax-card img{border-radius:16px; border:1px solid var(--line)}

@media (max-width: 960px){
  .hero-inner{grid-template-columns:1fr}
  .features{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .footer-inner{flex-direction:column; gap:10px}
  .nav ul{position:fixed; inset:60px 12px auto 12px; background:#0E1016; border:1px solid var(--line); border-radius:16px; padding:12px; display:none; flex-direction:column}
  .nav ul.open{display:flex}
  .nav-toggle{display:block}
}

@media (max-width: 560px){
  .cards{grid-template-columns:1fr}
  .cta-row{flex-direction:column}
}