:root {
            --neon-blue: #00f7ff;
            --neon-purple: #a100ff;
            --neon-pink: #ff00e6;
            --dark-bg: #0a0a15;
            --accent-green: #00ffaa;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--dark-bg);
            color: #e5e7eb;
            margin: 0;
            overflow-x: hidden;
            touch-action: manipulation;
        }

        .gradient-text {
            background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple), var(--neon-pink));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-radius: 16px;
        }

        .sample-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(0, 247, 255, 0.25);
        }

        .cta-button {
            position: relative;
            overflow: hidden;
            transform: translateZ(0);
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .cta-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transition: left 0.5s ease;
        }

        .cta-button:hover::before {
            left: 100%;
        }

        .cta-button:hover {
            transform: scale(1.05);
            background: linear-gradient(90deg, var(--neon-purple), var(--neon-pink));
        }

        .filter-button {
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 9999px;
            color: #d1d5db;
            font-weight: 600;
            background-color: rgba(10, 10, 21, 0.5);
            border: 1px solid rgba(0, 247, 255, 0.3);
            cursor: pointer;
            touch-action: manipulation;
            min-width: 80px;
            min-height: 36px;
            z-index: 20;
        }

        .filter-button:hover {
            background-color: rgba(0, 247, 255, 0.2);
        }

        .filter-button.active {
            background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
            color: #fff;
        }

        .image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 16/9;
        }

        #portfolio-particle-canvas {
            pointer-events: none;
            z-index: 0;
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.1);
            }
        }

        /* Responsive Adjustments */
        @media (max-width: 768px) {
            .sample-cards {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 2.2rem;
            }

            .section-header p {
                font-size: 1rem;
                max-width: 90%;
            }

            .filter-buttons {
                flex-wrap: wrap;
                gap: 12px;
                flex-direction: column;
                align-items: center;
            }

            .filter-button {
                padding: 8px 16px;
                min-width: 100px;
                min-height: 44px;
                font-size: 0.9rem;
            }

            .image-wrapper img {
                aspect-ratio: 4/3;
            }
        }

        @media (max-width: 640px) {
            .card-content p {
                font-size: 0.95rem;
            }

            .filter-button {
                font-size: 0.85rem;
                min-height: 40px;
            }
        }