* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        @font-face {
            font-family: 'Futura PT';
            font-weight: 300;
            font-style: normal;
        }
        
        body {
            font-family: 'Futura PT', 'Futura', 'Century Gothic', 'Avenir Next', -apple-system, sans-serif;
            background-color: #0f1115;
            color: #d4d4d8;
            overflow-x: hidden;
            user-select: none;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
        }
        
        #p5-canvas {
            position: fixed;
            top: 0;
            left: 0;
            z-index: 0;
            pointer-events: none;
        }
        
        .content {
            position: relative;
            z-index: 10;
        }
        
        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background-color: rgba(15, 17, 21, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(82, 82, 91, 0.2);
            z-index: 50;
        }
        
        nav .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 1.25rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        nav .logo {
            font-size: 1.25rem;
            font-weight: 400;
            letter-spacing: 0.08em;
        }
        
        nav .logo .highlight {
            color: #71717a;
        }
        
        nav .menu-btn {
            display: none;
            color: #a1a1aa;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        nav .nav-links {
            display: flex;
            gap: 2.5rem;
        }
        
        nav .nav-links a {
            color: #a1a1aa;
            text-decoration: none;
            font-size: 0.8rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            transition: color 0.3s;
            font-weight: 400;
        }
        
        nav .nav-links a:hover {
            color: #d4d4d8;
        }
        
        /* Audio Toggle Button - elegant and minimal */
        .audio-toggle {
            background: none;
            border: none;
            color: #71717a;
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s;
            font-weight: 400;
            padding: 0;
            font-family: inherit;
            position: relative;
        }
        
        .audio-toggle:hover {
            color: #a1a1aa;
            transform: scale(1.15);
        }
        
        .audio-toggle.active {
            color: #d4d4d8;
            animation: pulse 2s ease-in-out infinite;
        }
        
        .audio-toggle.active .audio-icon {
            color: #d4d4d8;
        }
        
        .audio-toggle:not(.active) .audio-icon::after {
            content: '';
            position: absolute;
            left: 50%;
            top: 50%;
            width: 120%;
            height: 1.5px;
            background-color: currentColor;
            transform: translate(-50%, -50%) rotate(-45deg);
            opacity: 0.6;
        }
        
        .audio-icon {
            transition: all 0.3s;
            display: inline-block;
            position: relative;
        }
        
        @keyframes pulse {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }
        
        /* Sections */
        section {
            min-height: 100vh;
            padding: 6rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            width: 100%;
        }
        
        /* Hero */
        .hero {
            text-align: center;
            max-width: 56rem;
        }
        
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 300;
            line-height: 1.3;
            margin-bottom: 2rem;
            letter-spacing: -0.02em;
        }
        
        .hero .highlight {
            color: #a1a1aa;
        }
        
        .hero .subtitle {
            font-size: 1.125rem;
            color: #71717a;
            margin-bottom: 2rem;
            font-weight: 400;
            letter-spacing: 0.1em;
        }
        
        .hero .description {
            font-size: 1rem;
            color: #a1a1aa;
            line-height: 1.7;
            max-width: 42rem;
            margin: 0 auto 3rem;
        }
        
        .btn {
            display: inline-block;
            padding: 0.875rem 2.5rem;
            background-color: rgba(113, 113, 122, 0.15);
            border: 1px solid rgba(113, 113, 122, 0.4);
            color: #a1a1aa;
            text-decoration: none;
            border-radius: 2px;
            transition: all 0.3s;
            font-size: 0.8rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
        }
        
        .btn:hover {
            background-color: rgba(113, 113, 122, 0.25);
            border-color: rgba(161, 161, 170, 0.6);
        }
        
        /* Portfolio */
        .section-title {
            font-size: 2.5rem;
            font-weight: 300;
            margin-bottom: 4rem;
            text-align: center;
            letter-spacing: -0.01em;
        }
        
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            max-width: 72rem;
            margin: 0 auto;
        }
        
        .project-card {
            background-color: rgba(24, 24, 27, 0.6);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(63, 63, 70, 0.5);
            border-radius: 2px;
            overflow: hidden;
            transition: all 0.3s;
            cursor: pointer;
        }
        
        .project-card:hover {
            border-color: rgba(113, 113, 122, 0.6);
            transform: translateY(-2px);
        }
        
        .project-image {
            width: 100%;
            height: 220px;
            background-color: #18181b;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: #3f3f46;
            border-bottom: 1px solid rgba(63, 63, 70, 0.3);
        }
        
        .project-image.has-image {
            font-size: 0;
        }
        
        /* Modal for project details */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(15, 17, 21, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            overflow-y: auto;
            padding: 2rem;
        }
        
        .modal.active {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .modal-content {
            background-color: rgba(24, 24, 27, 0.9);
            border: 1px solid rgba(113, 113, 122, 0.4);
            border-radius: 2px;
            max-width: 800px;
            width: 100%;
            padding: 3rem;
            position: relative;
        }
        
        .modal-close {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            background: none;
            border: none;
            color: #a1a1aa;
            font-size: 2rem;
            cursor: pointer;
            line-height: 1;
            transition: color 0.3s;
            z-index: 10;
        }
        
        .modal-close:hover {
            color: #d4d4d8;
        }
        
        .modal-nav {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background-color: rgba(24, 24, 27, 0.8);
            border: 1px solid rgba(113, 113, 122, 0.4);
            color: #a1a1aa;
            font-size: 2.5rem;
            width: 3rem;
            height: 3rem;
            cursor: pointer;
            line-height: 1;
            transition: all 0.3s;
            border-radius: 2px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10;
        }
        
        .modal-nav:hover {
            background-color: rgba(24, 24, 27, 0.95);
            border-color: rgba(161, 161, 170, 0.6);
            color: #d4d4d8;
        }
        
        .modal-prev {
            left: -4rem;
        }
        
        .modal-next {
            right: -4rem;
        }
        
        .modal-image {
            width: 100%;
            height: 400px;
            background-color: #18181b;
            background-size: cover;
            background-position: center;
            border-radius: 2px;
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 6rem;
            color: #3f3f46;
            overflow: hidden;
        }
        
        .modal-image.has-image {
            font-size: 0;
        }
        
        .modal-image iframe {
            border-radius: 2px;
        }
        
        .modal h2 {
            font-size: 2rem;
            font-weight: 400;
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        
        .modal .year {
            color: #71717a;
            font-size: 0.875rem;
            margin-bottom: 1.5rem;
            display: block;
        }
        
        .modal .description {
            color: #a1a1aa;
            line-height: 1.7;
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }
        
        .modal .tags {
            margin-top: 1.5rem;
        }
        
        .project-content {
            padding: 1.75rem;
        }
        
        .project-card h3 {
            font-size: 1.375rem;
            font-weight: 400;
            margin-bottom: 0.5rem;
            transition: color 0.3s;
            letter-spacing: -0.01em;
        }
        
        .project-card:hover h3 {
            color: #fafafa;
        }
        
        .project-card .year {
            font-size: 0.75rem;
            color: #71717a;
            float: right;
            margin-top: 0.25rem;
            letter-spacing: 0.05em;
        }
        
        .project-card .description {
            color: #a1a1aa;
            line-height: 1.6;
            margin-bottom: 1rem;
            font-size: 0.95rem;
        }
        
        .project-card .awards {
            font-size: 0.8rem;
            color: #a1a1aa;
            margin-bottom: 1rem;
        }
        
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        
        .tag {
            font-size: 0.7rem;
            padding: 0.35rem 0.75rem;
            background-color: rgba(63, 63, 70, 0.4);
            color: #a1a1aa;
            border: 1px solid rgba(82, 82, 91, 0.3);
            border-radius: 2px;
            letter-spacing: 0.05em;
        }
        
        /* Services */
        #services {
            background-color: rgba(15, 17, 21, 0.4);
        }
        
        .services-list {
            max-width: 56rem;
            margin: 0 auto;
        }
        
        .service-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.5rem;
            background-color: rgba(24, 24, 27, 0.5);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(63, 63, 70, 0.4);
            border-radius: 2px;
            margin-bottom: 1rem;
            transition: all 0.3s;
            cursor: default;
        }
        
        .service-item:hover {
            border-color: rgba(113, 113, 122, 0.7);
            background-color: rgba(24, 24, 27, 0.7);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        
        .service-item .arrow {
            color: #71717a;
            margin-top: 0.125rem;
            font-size: 0.875rem;
            transition: color 0.3s;
        }
        
        .service-item:hover .arrow {
            color: #a1a1aa;
        }
        
        .service-item p {
            font-size: 1rem;
            color: #a1a1aa;
            line-height: 1.6;
            transition: color 0.3s;
        }
        
        .service-item:hover p {
            color: #d4d4d8;
        }
        
        .expertise-box {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.5rem;
            background-color: rgba(24, 24, 27, 0.5);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(63, 63, 70, 0.4);
            border-radius: 2px;
            margin-top: 0;
            transition: all 0.3s;
        }
        
        .expertise-box:hover {
            border-color: rgba(113, 113, 122, 0.7);
            background-color: rgba(24, 24, 27, 0.7);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        
        .expertise-box .arrow {
            color: #71717a;
            margin-top: 0.125rem;
            font-size: 0.875rem;
            transition: color 0.3s;
            flex-shrink: 0;
        }
        
        .expertise-box:hover .arrow {
            color: #a1a1aa;
        }
        
        .expertise-box .content {
            flex: 1;
        }
        
        .expertise-box h3 {
            font-size: 1rem;
            font-weight: 500;
            color: #d4d4d8;
            margin-bottom: 0.5rem;
            letter-spacing: 0;
            transition: color 0.3s;
        }
        
        .expertise-box p {
            color: #a1a1aa;
            line-height: 1.6;
            font-size: 0.95rem;
            transition: color 0.3s;
        }
        
        .expertise-box:hover p {
            color: #d4d4d8;
        }
        
        /* Contact */
        .contact-content {
            max-width: 42rem;
            text-align: center;
        }
        
        .contact-info {
            margin: 2rem 0;
            color: #a1a1aa;
        }
        
        .contact-info p {
            margin-bottom: 0.5rem;
            font-size: 0.95rem;
        }
        
        .contact-info .name {
            font-size: 1.125rem;
            margin-bottom: 0.75rem;
            color: #d4d4d8;
        }
        
        .contact-info .detail {
            color: #71717a;
        }
        
        .contact-action {
            padding-top: 2rem;
        }
        
        /* E-Mail und Telefon Links kopierbar machen */
        a[href^="mailto"],
        a[href^="tel"] {
            user-select: text;
            -webkit-user-select: text;
            -moz-user-select: text;
            -ms-user-select: text;
        }
        
        /* Footer */
        footer {
            border-top: 1px solid rgba(63, 63, 70, 0.3);
            padding: 2rem 1.5rem;
            text-align: center;
            color: #52525b;
            font-size: 0.8rem;
            letter-spacing: 0.05em;
        }
        
        /* Mobile Menu */
        
        /* Language Switching Rules - CRITICAL FOR DE/EN */
        [data-lang="en"] .de-only {
            display: none !important;
        }
        
        [data-lang="de"] .en-only {
            display: none !important;
        }
        
        
        /* Tablet: 2 Spalten */
        @media (max-width: 1024px) and (min-width: 769px) {
            .projects-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            nav .menu-btn {
                display: block;
            }
            
            nav .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background-color: rgba(15, 17, 21, 0.95);
                padding: 1.5rem;
                gap: 1.5rem;
                border-bottom: 1px solid rgba(82, 82, 91, 0.2);
            }
            
            nav .nav-links.active {
                display: flex;
            }
            
            .audio-toggle {
                margin-top: 0;
            }
            
            .hero h1 {
                font-size: 2.25rem;
            }
            
            .hero .subtitle {
                font-size: 1rem;
            }
            
            .section-title {
                font-size: 1.875rem;
            }
            
            .project-image {
                height: 180px;
            }
            
            /* Responsive Grid: 1 Spalte auf Mobile */
            .projects-grid {
                grid-template-columns: 1fr;
            }
            
            /* Modal Navigation auf Mobile */
            .modal-prev {
                left: 0.5rem;
                width: 2.5rem;
                height: 2.5rem;
                font-size: 2rem;
            }
            
            .modal-next {
                right: 0.5rem;
                width: 2.5rem;
                height: 2.5rem;
                font-size: 2rem;
            }
            
            .modal-content {
                padding: 2rem 1.5rem;
            }
        }
        
        /* Smooth scrolling */
        html {
            scroll-behavior: smooth;
        }