body { scroll-behavior: smooth; overflow-x: hidden; }
        .page { display: none; }
        .page.active { display: block; }
        
        .glass-nav { background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(16px); }
        .custom-scrollbar::-webkit-scrollbar { width: 4px; }
        .custom-scrollbar::-webkit-scrollbar-track { background: transparent; }
        .custom-scrollbar::-webkit-scrollbar-thumb { background: #FF6B6B; border-radius: 10px; }
        
        .hero-gradient { background: linear-gradient(to bottom, rgba(15, 23, 42, 0.4) 0%, rgba(15, 23, 42, 0) 50%, rgba(15, 23, 42, 0.8) 100%); }
        .cart-open { transform: translateX(0) !important; }
        .modal-active { opacity: 1 !important; pointer-events: auto !important; }
        
        .luxury-card { transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1); }
        .luxury-card:hover { transform: translateY(-12px); box-shadow: 0 40px 80px -20px rgba(15, 23, 42, 0.15); }