:root{
  --bg:#0b1220; --panel:#121b2d; --muted:#94a3b8; --text:#e5e7eb; --accent:#60a5fa;
  --line:#1f2a44; --ok:#22c55e; --warn:#f59e0b;
}

*{box-sizing:border-box}

html,body{
  margin:0;
  padding:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.55;
}

a{color:#c7e0ff;text-decoration:none}
a:hover{text-decoration:underline}

.container{
  width:min(1100px,92vw);
  margin:auto;
  padding:24px;
}

/* HEADER */
.site-header{
  position:sticky;
  top:0;
  background:rgba(11,18,32,.8);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  z-index:10;
}

.header-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:18px;
  color:var(--text);
  text-decoration:none;
}

.logo{
  height:40px;
  width:auto;
  border-radius:999px;
}

.nav a{
  margin:0 10px;
  padding:8px 12px;
  border-radius:10px;
}
.nav a:hover{background:rgba(255,255,255,.06)}

/* HERO */
.hero{
  text-align:center;
  padding:70px 0 40px;
}

.hero-logo{
  display:flex;
  justify-content:center;
  align-items:center;
  margin-bottom:30px;
}

.hero-logo img{
  width:160px;      /* taille du logo au centre */
  height:auto;
  border-radius:999px;
  filter:drop-shadow(0 2px 6px rgba(0,0,0,0.3));
  transition:transform 0.3s ease;
}

.hero-logo img:hover{
  transform:scale(1.05);
}

.hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.15;
  margin:0 0 10px;
}

.hero p{
  max-width:700px;
  margin:0 auto 24px;
  color:var(--muted);
}

.accent{color:var(--accent)}

.cta-row{
  display:flex;
  justify-content:center;   /* boutons centrés */
  gap:12px;
  margin:18px 0 0;
  flex-wrap:wrap;
}

/* BOUTONS */
.btn{
  display:inline-block;
  padding:12px 16px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--text);
  font-weight:700;
}
.btn.primary{background:var(--ok);color:#06111a;border:0}
.btn.ghost{background:transparent}

/* CARTES / LAYOUT */
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin:28px 0;
}

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px;
}
.card.big{padding:22px}

.split{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:28px;
  align-items:center;
  margin:34px 0;
}

.split .illu{
  min-height:220px;
  border:1px dashed var(--line);
  border-radius:16px;
  background:linear-gradient(135deg,rgba(96,165,250,.12),transparent);
}

.check{padding-left:18px}
.check li{margin:8px 0}

.stack .service{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px;
  margin:14px 0;
}

/* FOOTER */
.footer-grid{
  display:flex;
  gap:24px;
  justify-content:space-between;
  align-items:flex-start;
}

.footer-links{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}

.site-footer{
  border-top:1px solid var(--line);
  margin-top:40px;
}

.copyright{
  border-top:1px solid var(--line);
  margin-top:16px;
  padding:14px 0;
  color:var(--muted);
  font-size:13px;
  text-align:center;
}

/* CONTACT / FORMULAIRES */
.cards{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}

.contact-form{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px;
  margin:14px 0;
}

input,textarea{
  width:100%;
  padding:12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#0f172a;
  color:var(--text);
}

label{
  display:block;
  margin:8px 0;
}

.row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}

.contact-block{
  margin-top:16px;
  padding:16px;
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(255,255,255,.03);
}

/* RESPONSIVE */
@media (max-width:880px){
  .grid-3{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .row{grid-template-columns:1fr}
}