* {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        
        /* Custom scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        
        ::-webkit-scrollbar-track {
            background: #1e293b;
        }
        
        ::-webkit-scrollbar-thumb {
            background: #475569;
            border-radius: 4px;
        }
        
        ::-webkit-scrollbar-thumb:hover {
            background: #64748b;
        }
        
        /* Glass effect */
        .glass {
            background: rgba(30, 41, 59, 0.8);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .glass-panel {
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(148, 163, 184, 0.1);
        }
        
        /* Gradient text */
        .gradient-text {
            background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        /* Button hover effects */
        .btn-primary {
            background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            transition: all 0.3s ease;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
        }
        
        /* Card hover */
        .hover-card {
            transition: all 0.3s ease;
        }
        
        .hover-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }
        
        /* Range slider styling */
        input[type="range"] {
            -webkit-appearance: none;
            appearance: none;
            height: 6px;
            background: #334155;
            border-radius: 3px;
            outline: none;
        }
        
        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 18px;
            height: 18px;
            background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        
        input[type="range"]::-webkit-slider-thumb:hover {
            transform: scale(1.2);
            box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
        }
        
        /* Animation */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .animate-fade-in {
            animation: fadeIn 0.5s ease forwards;
        }
        
        /* Loading spinner */
        .spinner {
            border: 3px solid rgba(255, 255, 255, 0.1);
            border-top-color: #3b82f6;
            border-radius: 50%;
            width: 24px;
            height: 24px;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        /* Chat bubble */
        .chat-bubble-user {
            background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            border-radius: 18px 18px 4px 18px;
        }
        
        .chat-bubble-ai {
            background: rgba(51, 65, 85, 0.8);
            border-radius: 18px 18px 18px 4px;
        }
        
        /* 3D Canvas container */
        #canvas-container {
            position: relative;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }
        
        #three-canvas {
            width: 100%;
            height: 100%;
        }
        
        /* Floating controls */
        .floating-controls {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 10;
        }
        
        /* Toast notifications */
        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 16px 24px;
            border-radius: 12px;
            color: white;
            font-weight: 500;
            z-index: 1000;
            animation: slideIn 0.3s ease;
        }
        
        @keyframes slideIn {
            from { transform: translateX(100%); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
        
        .toast.success { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
        .toast.error { background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); }
        .toast.warning { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }
        .toast.info { background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%); }