[data-site-header]{
  display:block;
  min-height:60px;
}

.site-nav{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--nav-bg);
  backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  padding:0 24px;
}

.site-nav-inner{
  max-width:1100px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:60px;
}

.site-nav-brand{
  display:inline-flex;
  align-items:center;
}

.site-nav .logo-img{
  display:block;
  width:32px;
  height:32px;
  border-radius:50%;
  object-fit:cover;
}

.site-nav-links{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  align-items:center;
}

.site-nav-links a{
  color:var(--text-dim);
  font-size:.82rem;
  text-decoration:none;
  font-weight:500;
  letter-spacing:.02em;
  transition:color .2s,opacity .2s;
}

.site-nav-links a:hover{
  color:var(--accent2);
}

.site-nav-links a.is-current{
  color:var(--text-bright);
}

.theme-toggle{
  display:flex;
  align-items:center;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:100px;
  padding:3px;
  gap:0;
  margin-left:8px;
}

.theme-toggle button{
  background:none;
  border:none;
  padding:5px 8px;
  border-radius:100px;
  cursor:pointer;
  font-size:.82rem;
  line-height:1;
  color:var(--text-dim);
  transition:all .2s;
  display:flex;
  align-items:center;
  justify-content:center;
}

.theme-toggle button.active{
  background:var(--accent);
  color:#fff;
}

.theme-toggle button:hover:not(.active){
  color:var(--text-bright);
}

@media(max-width:680px){
  .site-nav{
    padding:0 16px;
  }

  .site-nav-inner{
    padding:10px 0;
    align-items:flex-start;
    min-height:auto;
    flex-direction:column;
  }

  .site-nav-links{
    gap:12px;
  }
}