nav{
  position:sticky; top:0; z-index:50;
  background:rgba(5,10,6,0.75);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 28px;
  max-width:1140px; margin:0 auto;
  position:relative;
}
.logo{display:flex; align-items:center; gap:10px;}
.logo-text{font-size:22px; color:var(--accent);}
.logo-text span{color:var(--mint);}

.nav-links{display:flex; gap:28px; align-items:center;}
.nav-links a{
  font-weight:700; font-size:15px; color:var(--text-dim);
  transition:color .2s ease;
}
.nav-links a:hover{color:var(--accent);}

.nav-toggle{
  display:none;
  width:42px; height:42px;
  border-radius:12px;
  background:var(--surface-2);
  border:1px solid var(--border);
  cursor:pointer;
  align-items:center; justify-content:center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:"";
  display:block;
  width:20px; height:2px;
  background:var(--accent);
  position:relative;
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before{position:absolute; top:-6px;}
.nav-toggle span::after{position:absolute; top:6px;}

nav.nav-open .nav-toggle span{background:transparent;}
nav.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
nav.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}

@media (max-width:860px){
  .nav-toggle{display:flex;}
  .nav-links{
    position:absolute;
    top:100%; left:0; right:0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    background:var(--bg-2);
    border-bottom:1px solid var(--border);
    max-height:0;
    overflow:hidden;
    transition:max-height .25s ease;
  }
  nav.nav-open .nav-links{max-height:220px;}
  .nav-links a{padding:14px 28px; width:100%; border-top:1px solid var(--border);}
}