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

        :root {
            --bg-dark: #f8fafc;       
            --bg-card: #ffffff;       
            --accent-cyan: #0ea5e9;   
            --accent-blue: #2563eb;   
            --text-main: #0f172a;
            --text-muted: #64748b;    
            --border-color: #e2e8f0;  
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.02);
            --shadow-md: 0 10px 25px rgba(15, 23, 42, 0.08);
        }

        html {
            scroll-behavior: smooth;
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
        }

        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1.2rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--text-main);
            text-decoration: none;
            letter-spacing: 1px;
            cursor: pointer;
        }

        .logo span {
            color: var(--accent-cyan);
        }

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

        .nav-link {
            color: var(--text-muted);
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s;
            cursor: pointer;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--accent-blue);
        }

        .cart-icon {
            cursor: pointer;
            background: var(--bg-card);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            transition: all 0.2s;
            font-weight: 600;
        }

        .cart-icon:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .page-section {
            display: none;
            max-width: 1200px;
            margin: 0 auto;
            padding: 9rem 2rem 4rem 2rem;
        }

        .page-section.active {
            display: block;
        }

        .page-header, .shop-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .page-header h2, .shop-header h2 {
            font-size: 3rem;
            margin-bottom: 1rem;
            font-weight: 800;
        }

        .page-header p, .shop-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        .product-img-placeholder {
            width: 100%;
            height: 240px;
            background-color: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-color);
        }

       .product-card:hover .arrow {
              opacity: 1;
              pointer-events: auto;
       }

       .product-img {
              transition: opacity 0.15s ease-in-out;
              opacity: 1;
       }

       .product-img.fade-out {
              opacity: 0;
       }
       
       .arrow {
              position: absolute;
              top: 50%;
              transform: translateY(-50%);
              background-color: rgba(255, 255, 255, 0.7);
              border: none;
              font-size: 20px;
              padding: 10px 14px;
              cursor: pointer;
              border-radius: 50%;
              user-select: none;
              transition: background 0.2s;
              z-index: 10;
              opacity: 0;
              pointer-events: none;
              transition: opacity 0.25s ease-in-out;
       }

       .arrow:hover {
              background-color: rgba(255, 255, 255, 1);
       }

       .slider-container {
              position: relative;
              width: 100%;
              height: 240px;
              background-color: #f4f5f7;
              border-radius: 8px 8px 0 0;
              overflow: hidden;
       }

       .slides {
              display: flex;
              width: 100%;
              height: 100%;
              transition: transform 0.3s ease-in-out;
       }

       .slides img {
              width: 100%;
              height: 100%;
              object-fit: contain;
              flex: 0 0 100%;
       }
       
       .variant-buttons {
            display: flex;
            gap: 8px;
            margin: 12px 0;
        }
        
        .variant-btn {
            background-color: #f4f5f7;
            border: 1px solid #dcdcdc;
            padding: 6px 12px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 13px;
            transition: all 0.2s ease;
        }
        
        .variant-btn:hover {
            background-color: #eef2f5;
            border-color: #0066cc;
        }

       .variant-btn.active {
            background-color: #eef2f5;
            border-color: #0066cc;
            font-weight: bold;
            color: #0066cc;
        }

       .prev { left: 10px; }
       .next { right: 10px; }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 2rem;
            align-items: center;
            min-height: 60vh;
            margin-bottom: 4rem;
        }

        .hero-content {
            max-width: 100%;
        }

        .badge {
            background: rgba(14, 165, 233, 0.1);
            color: var(--accent-cyan);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(14, 165, 233, 0.2);
            display: inline-block;
        }

        .hero h1 {
            font-size: 4rem;
            font-weight: 800;
            line-height: 1.1;
            margin-top: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--text-main);
        }

        .gradient-text {
            background: linear-gradient(45deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            color: var(--text-muted);
            font-size: 1.2rem;
            line-height: 1.6;
            margin-bottom: 2.5rem;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .tech-box {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            width: 100%;
            height: 350px;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 2rem;
            position: relative;
            overflow: hidden;
        }

        .tech-box::before {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 100%; height: 4px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
        }

        .tech-status {
            font-size: 0.85rem;
            color: #10b981;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .tech-status::before {
            content: '';
            width: 8px; height: 8px; background-color: #10b981; border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 8px #10b981;
        }

        .printer-display {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            margin: 1rem 0;
        }

        .printer-img {
            max-height: 160px;
            width: auto;
            object-fit: contain;
        }

        .printer-badge {
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            background-color: #f1f5f9;
            border: 1px solid var(--border-color);
            padding: 0.3rem 0.7rem;
            border-radius: 4px;
            color: var(--text-main);
            white-space: nowrap;
        }

        .tech-spec-mini {
            text-align: center;
            background: var(--bg-dark);
            padding: 0.8rem;
            border-radius: 8px;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
            width: 100%;
        }

        .stats-bar {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2rem;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 5rem;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-blue);
            margin-bottom: 0.2rem;
        }

        .stat-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        .section-title-center {
            text-align: center;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 3rem;
        }

        .material-showcase {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .material-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2rem;
            border-radius: 12px;
            transition: all 0.3s;
        }

        .material-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-2px);
        }

        .material-dot {
            width: 12px; height: 12px; border-radius: 50%; display: inline-block; margin-right: 0.5rem;
        }

        .material-card h4 {
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
        }

        .material-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .btn {
            padding: 0.8rem 2rem;
            border-radius: 6px;
            font-weight: 600;
            transition: all 0.3s;
            cursor: pointer;
            font-size: 1rem;
            display: inline-block;
            text-decoration: none;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(45deg, var(--accent-blue), var(--accent-cyan));
            color: #ffffff;
            border: none;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
        }

        .btn-primary:hover {
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: var(--bg-card);
            color: var(--text-main);
            border: 1px solid var(--border-color);
        }

        .btn-secondary:hover {
            background: #f1f5f9;
        }

        .product-grid {
               display: grid;
               flex-wrap: wrap;
               grid-template-columns: repeat(auto-fit, 320px);
               gap: 40px;
               justify-content: center;
               align-content: center;
               max-width: 1200px;
               margin: 0 auto;
               width: 100%;
        }

       .product-card {
            width: 340px;
              background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            flex-direction: column;
            transition: transform 0.3s, box-shadow 0.3s;
               box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            display: inline-block;
            margin-right: 6px;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

       .product-img-link {
              width: 100%;
              height: 240px;
              object-fit: cover;
              display: block;
       }

        .product-info {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .prod-category {
            font-size: 0.8rem;
            color: var(--accent-blue);
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .product-info h3 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
        }

       .product-link {
              color: black;
              text-decoration: none;
              cursor: pointer;
       }

       .product-link:hover {
              text-decoration: none;
              cursor: pointer;
       }

        .tech-specs {
            background: #f8fafc;
            border-radius: 6px;
            padding: 0.8rem;
            margin-bottom: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
            font-size: 0.9rem;
            border-left: 3px solid var(--accent-cyan);
        }

        .product-footer {
            margin-top: auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .color-slider-container {
            position: relative;
            width: 100%;
            padding: 5px 0;
        }
        
        .color-slider-track {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            white-space: nowrap;
            padding: 0 30px;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
        }

        .color-slider-track::-webkit-scrollbar {
            display: none;
        }

       .color-slider-container.hide #nav-arrow {
              visibility: hidden;
       }

       .slides.hide #slides-arrow {
              visibility: hidden !important;
       }

        .nav-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            z-index: 10;
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid #ced4da;
            border-radius: 50%;
            width: 26px;
            height: 26px;
            font-size: 11px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.2s ease, background 0.2s;
        }

        .nav-arrow.left {
             left: 5px; 
        }

        .nav-arrow.right { 
            right: 5px; 
        }

        .product-card:hover .nav-arrow {
            opacity: 1;
            pointer-events: auto; 
        }

        .price {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-main);
        }

        .currency {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-main);
        }

        .btn-buy {
            background-color: transparent;
            color: var(--accent-blue);
            border: 1px solid var(--accent-blue);
            padding: 0.6rem 1.2rem;
            border-radius: 4px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn-buy:hover {
            background-color: var(--accent-blue);
            color: #ffffff;
        }

        .about-container, .legal-content, .contact-container {
            background: var(--bg-card);
            padding: 3rem;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            max-width: 800px;
            margin: 0 auto;
        }

        .contact-container {
            max-width: 600px;
        }

        .about-text h3 {
            margin-bottom: 1rem;
            font-size: 1.8rem;
        }

        .about-text p, .legal-content p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .legal-content h3 {
            margin: 2rem 0 1rem 0;
            font-size: 1.3rem;
        }

        .legal-content h3:first-child {
            margin-top: 0;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .feature-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2.5rem;
            border-radius: 8px;
            text-align: center;
            transition: transform 0.3s, border-color 0.3s;
            box-shadow: var(--shadow-sm);
        }

        .feature-card .icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        .card-icon {
            width: 75px;
            height: 75px;
            object-fit: contain;
            margin-bottom: 15px;
        }

        .form-group {
            margin-bottom: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .form-group label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .form-group input, .form-group textarea {
            width: 100%;
            padding: 0.8rem;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            font-family: 'Inter', sans-serif;
            font-size: 1rem;
            background-color: var(--bg-dark);
            color: var(--text-main);
            transition: border-color 0.2s, height 0.1s ease;
            resize: none; 
            overflow-y: hidden;
        }
        
        .form-group input:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--accent-cyan);
        }

        .form-submit-btn {
            width: 100%;
            border: none;
        }

        .sidebar {
            position: fixed;
            top: 0;
            right: -400px;
            width: 400px;
            height: 100%;
            background-color: var(--bg-card);
            border-left: 1px solid var(--border-color);
            box-shadow: -10px 0 30px rgba(0,0,0,0.05);
            z-index: 2000;
            transition: right 0.3s ease;
            padding: 2rem;
            display: flex;
            flex-direction: column;
        }

        .sidebar.open {
            right: 0;
        }

        .sidebar-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 1rem;
            margin-bottom: 1rem;
        }

        .close-btn {
            font-size: 2rem;
            cursor: pointer;
            color: var(--text-muted);
        }

        .close-btn:hover {
            color: var(--text-main);
        }

        #cart-items-container {
            flex-grow: 1;
            overflow-y: auto;
        }

        .cart-item {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            padding: 0.8rem;
            background: #f8fafc;
            border-radius: 6px;
            border: 1px solid var(--border-color);
        }

       .remove-btn {
              background: none;
              border: none;
              color: #A9A9A9;
              cursor: pointer;
              font-size: 25px;
       }

        .sidebar-footer {
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
        }

        .total-price {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            justify-content: space-between;
        }

        .checkout-button {
            width: 100%;
        }

       .legal-container {
              margin: 15px 0;
              display: flex;
              align-items: flex-start;
              gap: 10px;
              font-size: 14px;
       }

       .legal-container input[type="checkbox"] {
              margin-top: 3px;
              cursor: pointer;
       }

       .legal-container a {
              color: #00a2ff; /* Dein Hellblau */
              text-decoration: none;
              font-weight: bold;
       }

       .legal-container a:hover {
              text-decoration: underline;
       }

       .checkout-button {
              color: white;
              border: 1px solid var(--accent-blue);
              background-color: var(--accent-blue);
              border: none;
              padding: 12px 24px;
              font-size: 16px;
              font-weight: bold;
              border-radius: 8px;
              cursor: pointer;
              width: 100%;
              transition: background-color 0.3s ease, transform 0.2s ease;
       }

       .checkout-button:not(:disabled):hover {
              transform: scale(1.02);
       }

       .checkout-button:disabled {
              background-color: #cccccc;
              color: #666666;
              cursor: not-allowed;
              transform: none;
       }

        footer {
            text-align: center;
            padding: 3rem 2rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            border-top: 1px solid var(--border-color);
            margin-top: 6rem;
            background-color: #ffffff;
        }

        .docs a {
            color: #0072e3;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s ease;
        }
        
        .docs a:hover {
            text-decoration: underline;
        }

        .footer-links {
            margin-bottom: 1rem;
        }

        .footer-links a {
            margin: 0 0.5rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-muted);
            transition: color 0.2s;
        }

        .footer-links a:hover {
            color: var(--accent-blue);
        }

        @media (max-width: 768px) {
            .hero-grid { grid-template-columns: 1fr; }
            .hero h1 { font-size: 2.5rem; }
            .nav-links { display: none; }
            .sidebar { width: 100%; right: -100%; }
            .stats-bar { grid-template-columns: 1fr; gap: 1rem; }
        }