:root{
  --bg1: #0d001d;
  --bg2: #2b0b3a;
  --accent1: #b27eff;
  --accent2: #6a3bd6;
  --muted: #c9bfe6;
  --glass: rgba(255,255,255,0.04);
  --maxwidth:1100px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  background: radial-gradient(circle at 20% 10%, #3b0a6b 0%, transparent 20%), linear-gradient(180deg,var(--bg1),var(--bg2));
  color: #fff;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent1);text-decoration:none}
.container{max-width:var(--maxwidth);margin:20px auto;padding:16px}

/* Header */
.site-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
  border-bottom: 1px solid rgba(255,255,255,0.03);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--accent1),var(--accent2));display:flex;align-items:center;justify-content:center;font-weight:800}
.brand-text .title{font-weight:800;font-size:18px}
.brand-text .muted{color:var(--muted);font-size:13px}
/* Nav — scroll horizontal */
.nav{
  overflow-x:auto;
  white-space:nowrap;
  -webkit-overflow-scrolling:touch; /* scroll fluide sur téléphone */
  scrollbar-width:thin;
}

.nav ul{
  display:inline-flex;
  gap:12px;
  list-style:none;
  margin:0;
  padding:0;
}

.nav a{
  padding:8px 12px;
  border-radius:10px;
  display:inline-block;
  transition:all .18s;
  font-weight:700;
}

.nav a:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 30px rgba(106,59,214,0.12);
  background:rgba(255,255,255,0.02);
}

.burger{display:none;background:transparent;border:1px solid var(--glass);padding:8px;border-radius:8px;color:inherit}

/* Hero / cards */
.hero{padding:18px 0}
.hero h1{margin:6px 0;font-size:28px}
.muted{color:var(--muted)}
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:12px}
.card{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01)); padding:14px;border-radius:12px;border:1px solid var(--glass)}
.btn{display:inline-block;padding:8px 12px;border-radius:8px;border:1px solid var(--glass);background:transparent;color:inherit;cursor:pointer;margin-top:8px}
.content-block{margin-top:12px;padding:12px;background:linear-gradient(180deg, rgba(255,255,255,0.01), transparent);border-radius:10px}

/* Footer */
.site-footer{max-width:var(--maxwidth);margin:18px auto;padding:12px;color:var(--muted);display:flex;justify-content:space-between}

/* Responsive */
@media(max-width:1100px){.preview-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){
  .preview-grid{grid-template-columns:1fr}
  .nav{display:none}
  .burger{display:block}
  .nav.show{display:block;position:fixed;left:12px;right:12px;top:72px;background:rgba(13,0,29,0.96);padding:12px;border-radius:10px}
}