.nav{
  position:sticky;
  top:0;
  z-index:5;
  backdrop-filter:blur(10px);
  background:rgba(11,15,20,0.55);
  border-bottom:1px solid var(--border);
  transition:padding 160ms ease,background 160ms ease;
}

.nav-inner{
  width:min(var(--maxw),calc(100% - 2*var(--pad)));
  margin:0 auto;
  padding:18px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:padding 160ms ease;
}

.brand{
  color:var(--accent);
  font-weight:800;
  letter-spacing:0.2px;
  font-size:25px;
}

.links{
  display:flex;
  gap:6px;
  align-items:center;
}

.links a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  border-radius:999px;
  font-size:18px;
  color:var(--accent);
  transition:background 140ms ease,color 140ms ease,transform 140ms ease,border-color 140ms ease;
}

.links a:hover{
  color:var(--accent-hover);
  background:rgba(255,255,255,0.08);
  transform:translateY(-1px);
}

.links a.active{
  color:var(--accent-hover);
  background:rgba(255,215,90,0.10);
  border:1px solid rgba(255,215,90,0.25);
}

.links a::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:6px;
  height:2px;
  border-radius:2px;
  background:rgba(255,255,255,0.30);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform 160ms ease;
}

.links a:hover::after{transform:scaleX(1);}

.nav.shrunk .nav-inner{padding:10px 0;}
.nav.shrunk{background:rgba(11,15,20,0.72);}

@media (max-width:520px){
  .links a{padding:8px 10px;font-size:15px;}
  .brand{font-size:18px;}
}