/* Material Design 3 inspirierte Farbpalette */
        :root {
            --md-primary: #1976d2;
            --md-primary-variant: #1565c0;
            --md-secondary: #03dac6;
            --md-background: #121212;
            --md-surface: #1e1e1e;
            --md-surface-variant: #2d2d2d;
            --md-on-primary: #ffffff;
            --md-on-background: #e1e1e1;
            --md-on-surface: #e1e1e1;
            --md-outline: #737373;
            --md-shadow: rgba(0, 0, 0, 0.2);
            --md-elevation-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
            --md-elevation-2: 0 3px 6px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.12);
            --md-elevation-3: 0 10px 20px rgba(0, 0, 0, 0.15), 0 3px 6px rgba(0, 0, 0, 0.10);
            --md-elevation-4: 0 15px 25px rgba(0, 0, 0, 0.15), 0 5px 10px rgba(0, 0, 0, 0.05);
            --python-blue: #3776ab;
            --django-green: #0c4b33;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            line-height: 1.6;
            color: var(--md-on-background);
            background: var(--md-background);
            font-weight: 400;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header im Material Design Stil */
        .header {
            background: var(--md-surface);
            box-shadow: var(--md-elevation-2);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--md-outline);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--md-primary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .tech-logos {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tech-logo {
            width: 28px;
            height: 28px;
            border-radius: 4px;
            transition: transform 0.2s ease;
        }

        .tech-logo:hover {
            transform: scale(1.1);
        }

        .nav-link {
            color: var(--md-on-surface);
            text-decoration: none;
            margin-left: 24px;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .nav-link:hover {
            color: var(--md-primary);
        }

        /* Hero Section im Material Design Stil */
        .hero {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--md-surface) 0%, var(--md-surface-variant) 100%);
        }

        .hero-content {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .hero-text {
            flex: 1;
            min-width: 300px;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--md-on-surface);
            line-height: 1.1;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--md-outline);
            margin-bottom: 32px;
            line-height: 1.5;
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--md-primary);
            color: var(--md-on-primary);
            padding: 16px 32px;
            border-radius: 28px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.2s ease;
            box-shadow: var(--md-elevation-2);
            min-height: 56px;
        }

        .cta-button:hover {
            background: var(--md-primary-variant);
            box-shadow: var(--md-elevation-3);
            transform: translateY(-2px);
        }

        .hero-logos {
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: center;
        }

        .hero-logos img {
            max-width: 180px;
            height: auto;
            filter: brightness(0.9);
            transition: filter 0.2s ease;
        }

        .hero-logos img:hover {
            filter: brightness(1.1);
        }

        /* Features Section */
        .features {
            padding: 80px 0;
            background: var(--md-background);
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 48px;
            color: var(--md-on-background);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--md-surface);
            border-radius: 16px;
            padding: 32px;
            transition: all 0.3s ease;
            box-shadow: var(--md-elevation-1);
            border: 1px solid var(--md-outline);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--md-elevation-3);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            margin-bottom: 16px;
        }

        .feature-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--md-on-surface);
        }

        .feature-description {
            color: var(--md-outline);
            line-height: 1.6;
        }

        /* Curriculum Section */
        .curriculum {
            padding: 0px 0;
            background: var(--md-surface-variant);
        }

        .module {
            background: var(--md-surface);
            border-radius: 16px;
            padding: 32px;
            margin-bottom: 24px;
            box-shadow: var(--md-elevation-1);
            transition: all 0.2s ease;
        }

        .module:hover {
            box-shadow: var(--md-elevation-2);
        }

        .module-title {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 24px;
            font-weight: 600;
            color: var(--md-on-surface);
            margin-bottom: 20px;
        }

        .module-number {
            background: var(--md-primary);
            color: var(--md-on-primary);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }

        .lessons-list {
            list-style: none;
            display: grid;
            gap: 8px;
        }

        .lesson-item {
            background: var(--md-surface-variant);
            padding: 12px 16px;
            border-radius: 8px;
            border-left: 3px solid var(--md-primary);
            transition: all 0.2s ease;
        }

        .lesson-item:hover {
            background: var(--md-outline);
            transform: translateX(4px);
        }

        .lesson-number {
            color: var(--md-primary);
            font-weight: 600;
            margin-right: 8px;
        }

        /* Contact Section */
        .contact {
            padding: 30px 0;
            background: var(--md-surface);
            text-align: center;
        }

        .contact-content {
            max-width: 600px;
            margin: 0 auto;
        }

        .contact-info {
            background: var(--md-surface-variant);
            border-radius: 16px;
            padding: 32px;
            margin-top: 32px;
            box-shadow: var(--md-elevation-1);
        }

        .contact-info h3 {
            color: var(--md-on-surface);
            margin-bottom: 16px;
            font-size: 20px;
            font-weight: 600;
        }

        .contact-info p {
            margin-bottom: 12px;
            color: var(--md-outline);
        }

        /* Links Section */
        .useful-links {
            padding: 60px 0;
            background: var(--md-background);
        }

        .links-section h3 {
            color: var(--md-primary);
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .links-section ul {
            list-style: none;
        }

        .links-section .lesson-item {
            background: var(--md-surface);
            border-left: 3px solid var(--md-secondary);
        }

        .links-section .lesson-item:hover {
            background: var(--md-surface-variant);
        }

        .links-section a {
            color: var(--md-primary);
            text-decoration: none;
            font-weight: 500;
        }

        .links-section a:hover {
            color: var(--md-secondary);
        }

        /* Footer */
        .footer {
            background: var(--md-surface-variant);
            padding: 32px 0;
            text-align: center;
            color: var(--md-outline);
            border-top: 1px solid var(--md-outline);
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            .section-title { font-size: 2rem; }
            .features-grid { grid-template-columns: 1fr; }
            .hero-content { gap: 24px; }
            .logo { font-size: 20px; }
            .tech-logo { width: 24px; height: 24px; }
            .container { padding: 0 16px; }
        }

        @media (max-width: 480px) {
            .hero { padding: 40px 0; }
            .features, .curriculum, .contact { padding: 40px 0; }
        }