:root {
            --bg-primary: #0a0a0f;
            --bg-secondary: #1a1a24;
            --bg-card: #20202e;
            --text-primary: #ffffff;
            --text-secondary: #e0e6ed;
            --text-muted: #a0aec0;
            --accent-cyan: #00f5ff;
            --accent-purple: #a020f0;
            --accent-pink: #ff006e;
            --accent-green: #00ff88;
            --accent-orange: #ffaa00;
            --neon-blue: #00d4ff;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
        }

        /* Scroll Progress */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 0%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
            z-index: 9999;
            box-shadow: 0 0 10px var(--accent-cyan);
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(10, 10, 15, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(0, 245, 255, 0.2);
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            cursor: pointer;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            position: relative;
            transition: var(--transition);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
            transition: width 0.3s;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--accent-cyan);
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .nav-social {
            display: flex;
            gap: 1rem;
        }

        .nav-social a {
            color: var(--text-secondary);
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .nav-social a:hover {
            color: var(--accent-cyan);
            transform: translateY(-3px);
        }

        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
        }

        /* Hero */
        .hero {
            padding: 8rem 2rem 3rem;
            text-align: center;
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 50% 50%, rgba(0, 245, 255, 0.05), transparent);
        }

        .hero-content {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }

        .hero p {
            font-size: 1.3rem;
            color: var(--text-secondary);
        }

        /* Container */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 3rem 2rem;
        }

        /* Filter Section */
        .filter-section {
            margin-bottom: 3rem;
        }

        .filter-stats {
            text-align: center;
            margin-bottom: 2rem;
        }

        .project-count {
            font-size: 1.2rem;
            color: var(--text-muted);
        }

        .project-count span {
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 1.5rem;
        }

        .filter-tabs {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .filter-btn {
            padding: 0.8rem 1.5rem;
            background: var(--bg-card);
            border: 2px solid transparent;
            border-radius: 8px;
            color: var(--text-secondary);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .filter-btn.active {
            border-color: var(--accent-cyan);
            background: rgba(0, 245, 255, 0.1);
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
        }

        .filter-btn:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-3px);
        }

        .filter-badge {
            background: var(--accent-purple);
            color: white;
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
            font-size: 0.85rem;
        }

        /* Projects Grid */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .project-card {
            background: var(--bg-card);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid transparent;
            transition: var(--transition);
            cursor: pointer;
            opacity: 1;
            transform: scale(1);
        }

        .project-card.hidden {
            display: none;
        }

        .project-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 20px 40px rgba(0, 245, 255, 0.3);
        }

        .project-image {
            width: 100%;
            height: 250px;
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 5rem;
            position: relative;
            overflow: hidden;
        }

        .project-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.8));
            opacity: 0;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
        }

        .project-card:hover .project-overlay {
            opacity: 1;
        }

        .overlay-btn {
            padding: 0.8rem 1.5rem;
            background: var(--accent-cyan);
            color: var(--bg-primary);
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .overlay-btn:hover {
            background: var(--accent-purple);
            transform: scale(1.1);
        }

        .project-content {
            padding: 1.5rem;
        }

        .project-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 1rem;
        }

        .project-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .project-status {
            padding: 0.3rem 0.8rem;
            background: var(--accent-green);
            color: var(--bg-primary);
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .project-status.in-progress {
            background: var(--accent-orange);
        }

        .project-description {
            color: var(--text-muted);
            margin-bottom: 1rem;
            line-height: 1.6;
        }

        .project-meta {
            display: flex;
            gap: 1rem;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .meta-item i {
            color: var(--accent-cyan);
        }

        .project-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }

        .tag {
            padding: 0.3rem 0.8rem;
            background: rgba(0, 245, 255, 0.1);
            color: var(--accent-cyan);
            border-radius: 20px;
            font-size: 0.85rem;
            border: 1px solid var(--accent-cyan);
        }

        .tag.unity { border-color: var(--accent-purple); color: var(--accent-purple); background: rgba(160, 32, 240, 0.1); }
        .tag.unreal { border-color: var(--text-primary); color: var(--text-primary); background: rgba(255, 255, 255, 0.1); }
        .tag.web { border-color: var(--accent-green); color: var(--accent-green); background: rgba(0, 255, 136, 0.1); }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.95);
            z-index: 2000;
            overflow-y: auto;
            animation: fadeIn 0.3s;
        }

        .modal.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .modal-content {
            max-width: 1200px;
            margin: 2rem auto;
            background: var(--bg-secondary);
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            animation: slideUp 0.3s;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .modal-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 40px;
            height: 40px;
            background: var(--accent-cyan);
            color: var(--bg-primary);
            border: none;
            border-radius: 50%;
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 10;
            transition: var(--transition);
        }

        .modal-close:hover {
            background: var(--accent-purple);
            transform: rotate(90deg);
        }

        .modal-hero {
            height: 400px;
            background: linear-gradient(135deg, var(--bg-card), var(--bg-primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 8rem;
            position: relative;
        }

        .modal-body {
            padding: 2rem;
        }

        .modal-title {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .modal-description {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .modal-section {
            margin-bottom: 2rem;
        }

        .modal-section h3 {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }

        .features-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
        }

        .features-list li {
            padding: 1rem;
            background: var(--bg-card);
            border-radius: 8px;
            border-left: 3px solid var(--accent-cyan);
            color: var(--text-secondary);
        }

        .features-list i {
            color: var(--accent-cyan);
            margin-right: 0.5rem;
        }

        .tech-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .tech-item {
            padding: 0.8rem 1.5rem;
            background: var(--bg-card);
            border-radius: 8px;
            border: 1px solid var(--accent-purple);
            color: var(--text-primary);
            font-weight: 600;
        }

        .modal-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .stat-box {
            padding: 1rem;
            background: var(--bg-card);
            border-radius: 8px;
            text-align: center;
            border: 1px solid var(--accent-cyan);
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .modal-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn {
            padding: 1rem 2rem;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 245, 255, 0.5);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-cyan);
            border: 2px solid var(--accent-cyan);
        }

        .btn-secondary:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
        }

        /* Footer */
        footer {
            background: var(--bg-primary);
            padding: 3rem 2rem 1rem;
            border-top: 1px solid rgba(0, 245, 255, 0.2);
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-section h3 {
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }

        .footer-section p, .footer-section a {
            color: var(--text-muted);
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
            transition: var(--transition);
        }

        .footer-section a:hover {
            color: var(--accent-cyan);
            transform: translateX(5px);
        }

        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }

        .social-links a {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-card);
            border-radius: 50%;
            transition: var(--transition);
        }

        .social-links a:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            transform: translateY(-5px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
        }

        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: white;
            border: none;
            border-radius: 50%;
            font-size: 1.5rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            transform: translateY(-5px);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background: rgba(10, 10, 15, 0.98);
                flex-direction: column;
                align-items: center;
                padding-top: 2rem;
                transition: left 0.3s;
            }

            .nav-links.active {
                left: 0;
            }

            .mobile-toggle {
                display: block;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .projects-grid {
                grid-template-columns: 1fr;
            }

            .filter-tabs {
                gap: 0.5rem;
            }

            .filter-btn {
                padding: 0.6rem 1rem;
                font-size: 0.9rem;
            }

            .modal-hero {
                height: 250px;
                font-size: 4rem;
            }

            .modal-title {
                font-size: 2rem;
            }
        }

        ::-webkit-scrollbar {
            width: 10px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }

        ::-webkit-scrollbar-thumb {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            border-radius: 10px;
        }