/* NAVBAR — E4 elevation, frosted glass effect */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background:var(--ist-bg-elevated);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(245,158,11,.08);
  box-shadow: var(--e3), inset 0 1px 0 rgba(245,158,11,.06);
  height: 52px; display: flex; align-items: center;
  transition: all var(--transition-fast);
}
.navbar:hover { background: var(--ist-surface-2); }
.navbar .container { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.nav-brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 800; font-size: 1.25rem; letter-spacing: -.03em; color: var(--text);
  transition: all var(--transition-fast);
}
.nav-brand:hover { color: var(--primary); transform: scale(1.02); }
.nav-brand-icon {
  width: 40px; height: 40px; background: var(--primary);
  border-radius: var(--r-sm); display: grid; place-items: center; flex-shrink: 0;
  box-shadow: var(--glow-primary), var(--sh-md);
  transition: all var(--transition);
}
.nav-brand-icon svg { fill: var(--primary-fg); width: 20px; height: 20px; }
.nav-brand:hover .nav-brand-icon { 
  transform: scale(1.1) rotateZ(6deg);
  box-shadow: var(--glow-primary), var(--sh-lg);
}
.nav-badge {
  font-size: .65rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: var(--r-full); background: rgba(245,158,11,.15); 
  color: var(--primary); border: 1px solid rgba(245,158,11,.3);
  animation: pulse-badge 2.5s ease-in-out infinite;
}
@keyframes pulse-badge {
  0%, 100% { opacity: 1; }
  50% { opacity: .7; }
}
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  padding: 8px 16px; border-radius: var(--r-md); font-size: 1.1rem; font-weight: 500;
  color: var(--text-2); transition: all var(--transition-fast);
  position: relative;
    margin: 0 auto;
  
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; right: 50%;
  height: 2px; background: var(--ist-primary-soft);
  transition: left 0s, right 0s;
}
.nav-links a:hover { 
  background: rgba(245,158,11,0.6);
  color: var(--text); 
  transform: translateY(-1px);
    box-shadow: var(--sh-md);
       translateY(-1px);

}
.nav-links a.active { 
  background: rgba(245,158,11,.92); 
  color: var(--primary); 
  font-weight: 600;
  box-shadow: var(--ist-e2);


    
}
.nav-actions { display: flex; gap: 12px; align-items: center; }
@media (max-width: 768px) { .nav-links-wrap { display: none; } }