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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.lang-btn {
    background: none;
    border: 2px solid #667eea;
    color: #333;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.lang-btn:hover {
    background: #667eea;
    color: white;
    transform: translateY(-1px);
}

.lang-btn.active {
    background: #667eea;
    color: white;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
    text-decoration: none;
}

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

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #667eea;
}

.hero {
    background: 
        linear-gradient(135deg, rgba(76, 175, 80, 0.3), rgba(102, 126, 234, 0.3)),
        linear-gradient(180deg, #87CEEB 0%, #4682B4 50%, #1E90FF 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.neural-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    cursor: grab;
}

.neural-canvas:active {
    cursor: grabbing;
}

.audio-control-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 20;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1.5rem;
    color: white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    max-width: 350px;
    transition: all 0.3s ease;
}

.audio-control-overlay.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
}

.audio-control-content h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.2rem;
}

.audio-control-content p {
    margin: 0 0 1rem 0;
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.4;
}

.audio-enable-button {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    margin-bottom: 1rem;
    width: 100%;
}

.audio-enable-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.audio-enable-button:active {
    transform: translateY(0);
}

.audio-enable-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.audio-test-button {
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(76, 175, 80, 0.4);
    margin-bottom: 1rem;
    width: 100%;
}

.audio-test-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.6);
}

.audio-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ff4444;
    transition: all 0.3s ease;
}

.status-indicator.active {
    background: #44ff44;
    box-shadow: 0 0 10px rgba(68, 255, 68, 0.5);
}

.status-text {
    opacity: 0.8;
}

@media (max-width: 768px) {
    .audio-control-overlay {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        max-width: 300px;
        margin: 0;
    }
    
    .audio-control-overlay.hidden {
        transform: translate(-50%, -60%);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    background: rgba(0, 0, 0, 0.5);
    padding: 3rem;
    border-radius: 15px;
    color: white;
    text-align: center;
    animation: fadeInUp 1s ease;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.4s both;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.features {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.95);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

.screenshot-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.screenshot-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.screenshot-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.screenshot-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.screenshot-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.screenshot-placeholder {
    height: 200px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
}

.screenshot-info {
    padding: 1.5rem;
}

.screenshot-info h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.screenshot-info p {
    color: #666;
    font-size: 0.9rem;
}

.pricing {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.95);
}

.pricing h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.pricing-card.featured {
    border: 3px solid #667eea;
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: "Empfohlen";
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #667eea;
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-card h3 {
    color: #667eea;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 0.5rem;
}

.price-period {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
}

.features-list li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 2rem;
}

.features-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4CAF50;
    font-weight: bold;
}

.demo-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

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

.demo-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.demo-button {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.demo-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

footer {
    background: #333;
    color: white;
    padding: 40px 0;
    text-align: center;
}

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

.footer-section h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

.footer-section p, .footer-section a {
    color: #ccc;
    text-decoration: none;
    line-height: 1.8;
}

.footer-section a:hover {
    color: #667eea;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 2rem;
    margin-top: 2rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Chatbot Styles */
.chatbot-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 2000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.chatbot-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    transition: all 0.3s ease;
    position: relative;
}

.chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
}

.chatbot-toggle.active {
    background: linear-gradient(135deg, #f44336, #e57373);
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    height: 500px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    display: none;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s ease-out;
}

.chatbot-window.visible {
    display: flex;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chatbot-header {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.chatbot-avatar {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.chatbot-title {
    flex: 1;
}

.chatbot-title h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.chatbot-title p {
    margin: 0;
    font-size: 12px;
    opacity: 0.9;
}

.chatbot-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.4;
    animation: fadeInMessage 0.3s ease-out;
}

@keyframes fadeInMessage {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.bot {
    background: white;
    color: #333;
    align-self: flex-start;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.message.user {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    align-self: flex-end;
}

.message.typing {
    background: white;
    color: #666;
    align-self: flex-start;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.typing-indicator {
    display: flex;
    gap: 4px;
    align-items: center;
}

.typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #667eea;
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

.chatbot-input {
    padding: 15px 20px;
    background: white;
    border-top: 1px solid #e9ecef;
    display: flex;
    gap: 10px;
    align-items: center;
}

.chatbot-input input {
    flex: 1;
    border: 1px solid #ddd;
    border-radius: 20px;
    padding: 10px 15px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s ease;
}

.chatbot-input input:focus {
    border-color: #667eea;
}

.chatbot-send {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 16px;
}

.chatbot-send:hover {
    transform: scale(1.1);
}

.chatbot-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.suggestion-chip {
    background: #e3f2fd;
    color: #1976d2;
    border: none;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.suggestion-chip:hover {
    background: #1976d2;
    color: white;
}

/* Enhanced Mobile Responsive Styles */
@media (max-width: 768px) {
    /* Container and layout adjustments */
    .container {
        padding: 0 15px;
    }
    
    /* Navigation mobile */
    .nav-links {
        display: none;
    }
    
    nav {
        flex-wrap: wrap;
        padding: 0.5rem 0;
    }

    .language-switcher {
        gap: 0.3rem;
    }
    
    .lang-btn {
        padding: 0.2rem 0.6rem;
        font-size: 0.8rem;
        min-height: 36px;
    }
    
    /* Hero section mobile */
    .hero-content h1 {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .hero-content p {
        font-size: 1rem;
        margin: 1rem 0;
    }
    
    .cta-button {
        min-height: 48px;
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    /* Grid layouts mobile */
    .features-grid,
    .screenshot-gallery,
    .pricing-cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Feature cards mobile */
    .feature-card {
        padding: 1.5rem;
        text-align: center;
    }
    
    .feature-icon {
        font-size: 3rem;
        margin-bottom: 1rem;
    }
    
    /* Screenshot cards mobile */
    .screenshot-card {
        margin-bottom: 2rem;
    }
    
    .screenshot-placeholder {
        height: 200px;
        font-size: 1rem;
    }
    
    /* Pricing cards mobile */
    .pricing-card {
        padding: 2rem 1.5rem;
        margin: 1rem 0;
    }

    .pricing-card.featured {
        transform: none;
        margin: 1rem 0;
    }

    .pricing-card.featured:hover {
        transform: translateY(-5px);
    }
    
    /* Footer mobile */
    .footer-content {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 2rem;
    }
    
    .footer-section h3 {
        font-size: 1.1rem;
    }
    
    /* Chatbot mobile */
    .chatbot-window {
        width: 300px;
        height: 450px;
    }
    
    .chatbot-container {
        bottom: 15px;
        right: 15px;
    }
    
    /* Touch-friendly elements */
    button,
    .demo-button {
        min-height: 48px;
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 0.9rem;
    }
    
    .feature-card,
    .pricing-card {
        padding: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr !important;
        gap: 1.5rem;
    }
    
    .chatbot-window {
        width: calc(100vw - 20px);
        height: 400px;
    }
    
    .screenshot-placeholder {
        height: 150px;
        font-size: 0.9rem;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Disable hover effects that don't work on touch */
    .feature-card:hover,
    .screenshot-card:hover,
    .pricing-card:hover {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: none;
    }
    
    /* Make touch targets larger */
    .nav-links a,
    .lang-btn,
    button,
    .cta-button,
    .demo-button {
        min-height: 48px;
        padding: 1rem;
    }
}