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

        :root {
            --purple-600: #9b59b6;
            --purple-700: #8e44ad;
            --purple-800: #6c3483;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background-color: #f9fafb;
            color: #374151;
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--gray-200);
            z-index: 50;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }

        .nav-container {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 5rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .logo-box {
            width: 5rem;
            height: 5rem;
            border-radius: 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 1.125rem;
            padding: 0.25rem;
        }

        .logo-box img {
            width: 100%;
            height: auto;
            object-fit: contain;
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: bold;
            background: linear-gradient(90deg, var(--purple-600), var(--purple-700));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: none;
            gap: 2.5rem;
            list-style: none;
            align-items: center;
        }

        .nav-links.active {
            display: flex;
            position: absolute;
            top: 5rem;
            left: 0;
            right: 0;
            flex-direction: column;
            gap: 1rem;
            background: white;
            padding: 1.5rem;
            border-bottom: 1px solid var(--gray-200);
        }

        .nav-links a {
            text-decoration: none;
            color: var(--gray-700);
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: var(--purple-600);
        }

        .nav-button {
            padding: 0.75rem 1.5rem;
            background: linear-gradient(90deg, var(--purple-600), var(--purple-700));
            color: white;
            border: none;
            border-radius: 0.5rem;
            font-weight: 600;
            cursor: pointer;
            transition: box-shadow 0.3s;
        }

        .nav-button:hover {
            box-shadow: 0 10px 25px rgba(147, 51, 234, 0.3);
        }

        .menu-btn {
            display: flex;
            flex-direction: column;
            gap: 0.35rem;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-btn span {
            width: 1.75rem;
            height: 0.2rem;
            background: var(--gray-700);
            transition: all 0.3s;
        }

        @media (min-width: 768px) {
            .nav-links {
                display: flex;
                position: static;
                flex-direction: row;
                gap: 2.5rem;
            }

            .nav-links.active {
                position: static;
                flex-direction: row;
                background: transparent;
                padding: 0;
                border: none;
                gap: 2.5rem;
            }

            .menu-btn {
                display: none;
            }

            .nav-button {
                width: auto;
            }
        }

        /* Hero Section */
        .hero {
            margin-top: 5rem;
            padding: 2rem 1.5rem 5rem;
            background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 50%, var(--gray-900) 100%);
            color: white;
            position: relative;
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 24rem;
            height: 24rem;
            background: rgba(147, 51, 234, 0.15);
            border-radius: 50%;
            filter: blur(80px);
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24rem;
            height: 24rem;
            background: rgba(147, 51, 234, 0.15);
            border-radius: 50%;
            filter: blur(80px);
        }

        .hero-container {
            max-width: 80rem;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 4rem;
            align-items: center;
        }

        @media (min-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr 1fr;
            }
        }

        .hero-text h1 {
            font-size: 3.75rem;
            font-weight: bold;
            margin-bottom: 1rem;
            color: var(--purple-600);
        }

        @media (min-width: 768px) {
            .hero-text h1 {
                font-size: 5rem;
            }
        }

        .hero-text p {
            font-size: 1.5rem;
            font-weight: 300;
            color: rgba(209, 213, 219, 0.7);
            margin-bottom: 1rem;
        }

        .hero-desc {
            font-size: 1.125rem;
            color: rgba(209, 213, 219, 0.8);
            line-height: 1.75;
            margin-bottom: 2rem;
            max-width: 32rem;
        }

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

        .btn {
            padding: 0.75rem 2rem;
            border-radius: 0.5rem;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--purple-600), var(--purple-700));
            color: white;
        }

        .btn-primary:hover {
            box-shadow: 0 10px 25px rgba(147, 51, 234, 0.3);
            transform: scale(1.05);
        }

        .btn-secondary {
            border: 2px solid var(--purple-600);
            color: var(--purple-600);
            background: transparent;
        }

        .btn-secondary:hover {
            background: var(--purple-600);
            color: white;
        }

        .hero-image {
            display: none;
            justify-content: center;
        }

        @media (min-width: 1024px) {
            .hero-image {
                display: flex;
            }
        }

        .guitar-box img {
            width: 100%;
            height: auto;
        }

        .guitar-box {
            border-radius: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 6rem;
            transition: transform 0.5s;
        }

        .guitar-box:hover {
            transform: scale(1.05);
        }

        /* Sections */
        section {
            padding: 2rem 1.5rem;
        }

        @media (min-width: 768px) {
            section {
                padding: 8rem 1.5rem;
            }
        }

        .section-container {
            max-width: 80rem;
            margin: 0 auto;
        }

        h2 {
            font-size: 3rem;
            font-weight: bold;
            color: var(--gray-900);
            margin-bottom: 2rem;
            text-align: center;
        }

        .section-subtitle {
            text-align: center;
            color: var(--gray-600);
            font-size: 1.125rem;
            max-width: 48rem;
            margin: 0 auto 4rem;
        }

        /* Description Section */
        #description {
            background: white;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 4rem;
        }

        @media (min-width: 768px) {
            .grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .card {
            background: linear-gradient(135deg, rgba(147, 51, 234, 0.05) 0%, white 100%);
            border: 2px solid rgba(147, 51, 234, 0.15);
            padding: 2.5rem;
            border-radius: 1rem;
            transition: box-shadow 0.3s;
        }

        .card:hover {
            box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
        }

        .card-icon {
            font-size: 3rem;
            margin-bottom: 1.5rem;
        }

        .card h3 {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--gray-900);
            margin-bottom: 1rem;
        }

        .card p {
            color: var(--gray-700);
            line-height: 1.75;
        }

        .highlight-box {
            background: linear-gradient(90deg, var(--purple-600), var(--purple-700));
            color: white;
            padding: 3rem;
            border-radius: 1rem;
        }

        .highlight-box h3 {
            font-size: 2rem;
            font-weight: bold;
            margin-bottom: 1.5rem;
            color: white;
        }

        .highlight-box ul {
            list-style: none;
            space-y: 1rem;
        }

        .highlight-box li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            font-size: 1.125rem;
            margin-bottom: 1rem;
        }

        .highlight-box li span {
            font-weight: bold;
            flex-shrink: 0;
            min-width: 2rem;
        }

        /* Funktionsweise Section */
        #funktionsweise {
            background: var(--gray-50);
        }

        .steps-box {
            background: white;
            border-radius: 1rem;
            padding: 3rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            border-left: 4px solid var(--purple-600);
        }

        .steps-box h3 {
            font-size: 2rem;
            font-weight: bold;
            color: var(--gray-900);
            margin-bottom: 2rem;
        }

        .step {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 1.5rem;
            align-items: flex-start;
        }

        .step-number {
            width: 3rem;
            height: 3rem;
            background: var(--purple-600);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
            margin-top: 0.25rem;
        }

        .step h4 {
            font-size: 1.25rem;
            font-weight: bold;
            color: var(--gray-900);
            margin-bottom: 0.5rem;
        }

        .step p {
            color: var(--gray-700);
            line-height: 1.75;
        }

        /* Students Section */
        #students {
            background: white;
        }

        .grid-students {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 4rem;
        }

        @media (min-width: 768px) {
            .grid-students {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .student-card {
            background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
            border: 2px solid var(--gray-200);
            border-radius: 1.5rem;
            padding: 2rem;
            text-align: center;
            transition: all 0.3s;
        }

        .student-card:hover {
            box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
            border-color: var(--purple-600);
        }

        .student-avatar {
            width: 10rem;
            height: 10rem;
            background: linear-gradient(135deg, var(--purple-600), var(--purple-700));
            border-radius: 50%;
            margin: 0 auto 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(147, 51, 234, 0.2);
            transition: transform 0.3s;
            overflow: hidden;
        }

        .student-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
        }

        .student-card:hover .student-avatar {
            transform: scale(1.1);
        }

        .student-card h3 {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--gray-900);
            margin-bottom: 0.5rem;
        }

        .student-card p {
            color: var(--purple-600);
            font-weight: 600;
            font-size: 1.125rem;
        }

        .idea-box {
            background: linear-gradient(90deg, var(--purple-600), var(--purple-700));
            color: white;
            border-radius: 1.5rem;
            padding: 3rem;
            text-align: center;
        }

        .idea-box h3 {
            font-size: 2rem;
            font-weight: bold;
            margin-bottom: 1rem;
            color: white;
        }

        .idea-box p {
            font-size: 1.125rem;
            line-height: 1.75;
            max-width: 56rem;
            margin: 0 auto;
            color: rgba(255, 255, 255, 0.95);
        }

        /* CTA Section */
        .cta {
            background: linear-gradient(90deg, var(--purple-600), var(--purple-700));
            color: white;
            text-align: center;
        }

        .cta-container {
            max-width: 56rem;
            margin: 0 auto;
        }

        .cta h2 {
            color: white;
            margin-bottom: 1.5rem;
        }

        .cta p {
            font-size: 1.25rem;
            margin-bottom: 2.5rem;
            opacity: 0.9;
        }

        /* Footer */
        footer {
            background: var(--gray-900);
            color: var(--gray-400);
            padding: 3rem 1.5rem;
        }

        .footer-container {
            max-width: 80rem;
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .footer-col h4 {
            color: white;
            font-weight: bold;
            margin-bottom: 1rem;
            font-size: 1.125rem;
        }

        .footer-col p {
            font-size: 0.875rem;
            line-height: 1.75;
        }

        .footer-col ul {
            list-style: none;
            space-y: 0.5rem;
        }

        .footer-col li {
            font-size: 0.875rem;
            margin-bottom: 0.5rem;
        }

        .footer-col a {
            color: var(--gray-400);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-col a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid var(--gray-800);
            padding-top: 2rem;
            text-align: center;
            font-size: 0.875rem;
        }