.site-header{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.78);
  border-bottom: 1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
}

/* Ruban scout coloré */
.site-header::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-1px;
  height: 4px;
  background: linear-gradient(90deg, var(--danger), var(--brand2), var(--brand), var(--sky));
  opacity: .9;
}

.brand{ display:flex; align-items:center; gap:10px; font-weight:700; }
.brand-badge{
  width: 34px; height: 34px;
  display:grid; place-items:center;
  background: var(--brand-soft);
  border: 1px solid var(--brand-border);
  border-radius: 10px;
}

.nav{ display:flex; gap: 14px; }
.nav a{
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--muted);
}
.nav a:hover{
  background: rgba(2,6,23,.04);
  color: var(--text);
}

.nav-toggle{
  display:none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.92);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 10px;
  font-size: 16px;
}

@media (max-width: 900px){
  .nav-toggle{ display:block; }
  .nav{
    position:absolute;
    right: 16px;
    top: 58px;
    display:none;
    flex-direction:column;
    background: rgba(255,255,255,.92);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 10px;
    width: min(240px, calc(100% - 32px));
  }
  .nav.open{ display:flex; }
}