body {
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }
        
        .dm-sans { font-family: 'DM Sans', sans-serif; }
        
        .smooth-transition { transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
        
        .gradient-bg {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
        }
        
        .card-hover {
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .card-hover:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(16, 185, 129, 0.15);
        }
        
        .glass-effect {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .emerald-glow {
            box-shadow: 0 0 30px rgba(16, 185, 129, 0.3);
        }
        
        .fade-in {
            animation: fadeIn 0.6s ease-in;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .slide-in {
            animation: slideIn 0.5s ease-out;
        }
        
        @keyframes slideIn {
            from { transform: translateX(100%); }
            to { transform: translateX(0); }
        }
        
        .pulse-slow {
            animation: pulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }
        
        .cart-badge {
            animation: pop 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        }
        
        @keyframes pop {
            0% { transform: scale(0); }
            50% { transform: scale(1.2); }
            100% { transform: scale(1); }
        }
        
        .filter-active {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: white;
        }
        
        .toast {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            z-index: 9999;
            animation: slideUp 0.3s ease-out;
        }
        
        @keyframes slideUp {
            from { transform: translateY(100px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        
        .modal-content {
            max-height: 80vh;
            overflow-y: auto;
        }
        
        .modal-content::-webkit-scrollbar {
            width: 8px;
        }
        
        .modal-content::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 4px;
        }
        
        .modal-content::-webkit-scrollbar-thumb {
            background: #10b981;
            border-radius: 4px;
        }
        
        .modal-content::-webkit-scrollbar-thumb:hover {
            background: #059669;
        }
        
        /* Mobile menu styles */
        .mobile-menu {
            transform: translateX(-100%);
            transition: transform 0.3s ease-in-out;
        }
        
        .mobile-menu.open {
            transform: translateX(0);
        }
        
        /* Responsive utilities */
        @media (max-width: 768px) {
            .hero-text { font-size: 2rem; }
            .section-title { font-size: 2rem; }
            .card-hover:hover { transform: translateY(-4px); }
            .toast { bottom: 1rem; right: 1rem; left: 1rem; }
        }
        
        @media (max-width: 640px) {
            .filter-btn { padding: 0.5rem 0.75rem; font-size: 0.875rem; }
        }