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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-gray: #ecf0f1;
    --dark-gray: #95a5a6;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-links a:hover {
    background-color: rgba(255,255,255,0.1);
    color: var(--secondary-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.9) 0%, rgba(52, 73, 94, 0.9) 100%), 
                url('hero-bg.jpg') center/cover no-repeat;
    color: var(--white);
    padding: 150px 0 100px;
    text-align: center;
    margin-top: 60px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.modern-embedded {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    color: var(--secondary-color);
    text-shadow: 0 0 20px rgba(52, 152, 219, 0.3);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    font-weight: 300;
}

.hero-description {
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.hero-description p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.9);
}

.cta-button {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    font-size: 1.1rem;
}

.cta-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

/* About Section */
.about {
    padding: 80px 0;
    background-color: var(--white);
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-align: center;
}

.about .lead {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--text-color);
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

/* Experience Section */
.experience {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.experience h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
    text-align: center;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--secondary-color);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: 11px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    border: 3px solid var(--white);
}

.timeline-content {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.timeline-content h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.timeline-content h4 a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

.timeline-content h4 a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.duration {
    color: var(--dark-gray);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-style: italic;
}

.timeline-content p {
    color: var(--text-color);
    line-height: 1.6;
}

/* Expertise Section */
.expertise {
    padding: 80px 0;
    background-color: var(--white);
}

.expertise h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
    text-align: center;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.expertise-category {
    background-color: var(--white);
    border-radius: 8px;
    transition: var(--transition);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.expertise-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.category-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.expertise-category:hover .category-image img {
    transform: scale(1.05);
}

.expertise-category h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 1.5rem 2rem 1.5rem 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color);
}

.expertise-category ul {
    list-style: none;
    padding: 0 2rem 2rem 2rem;
}

.expertise-category li {
    padding: 0.6rem 0;
    color: var(--text-color);
    position: relative;
    padding-left: 1.5rem;
}

.expertise-category li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* Flutter Section */
.flutter-section {
    padding: 80px 0;
    background-color: var(--white);
}

.flutter-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.flutter-logo {
    height: 60px;
    width: auto;
}

.flutter-section h2 {
    font-size: 2.5rem;
    margin-bottom: 0;
    color: var(--primary-color);
    text-align: center;
}

.flutter-intro {
    text-align: center;
    margin-bottom: 4rem;
}

.flutter-intro .lead {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--text-color);
    max-width: 900px;
    margin: 0 auto;
}

.flutter-benefits,
.flutter-companies,
.flutter-use-cases {
    margin-bottom: 4rem;
}

.flutter-section h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.benefit-item {
    background-color: var(--light-gray);
    padding: 2rem;
    border-radius: 8px;
    transition: var(--transition);
}

.benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.benefit-item h4 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.benefit-item p {
    line-height: 1.7;
    color: var(--text-color);
}

.companies-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 2rem;
}

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

.company-item {
    background-color: var(--light-gray);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
    transition: var(--transition);
}

.company-item:hover {
    border-left-color: var(--accent-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.company-item h4 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.company-item p {
    line-height: 1.7;
    color: var(--text-color);
}

.use-cases-list {
    max-width: 900px;
    margin: 2rem auto 0;
    list-style: none;
    padding: 0;
}

.use-cases-list li {
    background-color: var(--light-gray);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
    line-height: 1.7;
}

.use-cases-list strong {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.flutter-cta {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem;
    background-color: var(--light-gray);
    border-radius: 8px;
}

.flutter-cta p {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, #34495e 100%);
    color: var(--white);
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: rgba(255,255,255,0.9);
}

/* Impressum Section */
.impressum {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.impressum h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
    text-align: center;
}

.impressum-content {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.impressum-content h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--light-gray);
}

.impressum-content h3:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.impressum-content h4 {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
}

.impressum-content p {
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.impressum-content strong {
    color: var(--primary-color);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
}

footer p {
    color: rgba(255,255,255,0.7);
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 60px;
        right: -100%;
        width: 250px;
        height: calc(100vh - 60px);
        background-color: var(--primary-color);
        flex-direction: column;
        padding: 2rem 0;
        box-shadow: -2px 0 10px rgba(0,0,0,0.2);
        transition: right 0.3s ease;
        gap: 0;
        overflow-y: auto;
    }

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

    .nav-links li {
        width: 100%;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .nav-links a {
        display: block;
        padding: 1rem 2rem;
        width: 100%;
        text-align: left;
        border-radius: 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-marker {
        left: 1px;
    }

    .benefits-grid,
    .companies-grid {
        grid-template-columns: 1fr;
    }

    .impressum-content {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .nav-links {
        width: 200px;
    }
    
    .hero {
        padding: 120px 20px 80px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }

    .logo {
        font-size: 1.2rem;
    }
}