/* Navbar */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;transition:background .3s,box-shadow .3s}
.site-header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);box-shadow:0 1px 3px rgba(0,0,0,.08);border-bottom:1px solid rgba(0,0,0,.05)}
.nav-inner{max-width:1280px;margin:0 auto;padding:.75rem 1.5rem;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.125rem;color:var(--color-secondary)}
.logo-img{height:32px;width:auto}
.nav-links{display:flex;gap:2rem}
.nav-links a{font-size:.875rem;font-weight:500;color:#64748b;transition:color .2s}
.nav-links a:hover{color:var(--color-primary)}
.nav-actions{display:flex;align-items:center;gap:1rem}
.theme-toggle{background:none;border:1px solid #e2e8f0;border-radius:.5rem;padding:.375rem;cursor:pointer;color:#64748b;display:flex;align-items:center;justify-content:center;transition:border-color .2s}
.theme-toggle:hover{border-color:var(--color-primary);color:var(--color-primary)}
.nav-cta{display:inline-flex;align-items:center;background:var(--color-primary);color:#fff;padding:.5rem 1.25rem;border-radius:.5rem;font-size:.875rem;font-weight:600;transition:opacity .2s}
.nav-cta:hover{opacity:.9}
.nav-mobile-toggle{display:none;align-items:center;gap:.5rem}
.mobile-menu-btn{background:none;border:none;cursor:pointer;color:#64748b;display:flex;align-items:center}
.mobile-menu{display:none;flex-direction:column;gap:.25rem;padding:1rem 1.5rem;background:#fff;border-top:1px solid #e2e8f0}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:.75rem 0;font-size:.875rem;font-weight:500;color:#64748b;border-bottom:1px solid #f1f5f9}
.mobile-menu a:hover{color:var(--color-primary)}
.mobile-cta{background:var(--color-primary);color:#fff!important;text-align:center;padding:.75rem!important;border-radius:.5rem;border:none!important;margin-top:.5rem}

@media(max-width:768px){
  .nav-links,.nav-actions{display:none}
  .nav-mobile-toggle{display:flex}
}