/* Reset und Basis-Styles */
* {
    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-color: #f8f9fa;
}

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

/* Navigation */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #2563eb;
    font-size: 1.8rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

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

.nav-link:hover {
    color: #2563eb;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
}

.mockup {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
    width: 100%;
    max-width: 400px;
}

.mockup-header {
    background: #f1f5f9;
    padding: 15px;
    border-bottom: 1px solid #e2e8f0;
}

.mockup-dots {
    display: flex;
    gap: 8px;
}

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #cbd5e1;
}

.mockup-dots span:nth-child(1) { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:nth-child(3) { background: #10b981; }

.mockup-content {
    padding: 30px;
    color: #333;
}

.mockup-content h3 {
    color: #2563eb;
    margin-bottom: 10px;
}

.mockup-features {
    margin-top: 20px;
}

.mockup-features span {
    display: block;
    margin: 5px 0;
    color: #64748b;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #1e293b;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: 15px;
    background: #f8fafc;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #1e293b;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    padding: 80px 0;
    background: #f1f5f9;
}

.pricing h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #1e293b;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #64748b;
    margin-bottom: 60px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.pricing-card.featured {
    border: 3px solid #2563eb;
    transform: scale(1.05);
}

.featured-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #2563eb;
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.pricing-header h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #1e293b;
}

.pricing-price {
    margin-bottom: 30px;
}

.pricing-price .price {
    font-size: 2.5rem;
    font-weight: bold;
    color: #2563eb;
}

.pricing-price .period {
    color: #64748b;
    font-size: 1rem;
}

.pricing-features ul {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid #e2e8f0;
    color: #475569;
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* About Section */
.about {
    padding: 80px 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #1e293b;
}

.about-text p {
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 20px;
    line-height: 1.7;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 10px;
}

.stat p {
    color: #64748b;
    font-weight: 500;
}

.testimonial {
    background: #f8fafc;
    padding: 30px;
    border-radius: 15px;
    border-left: 4px solid #2563eb;
}

.testimonial p {
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #475569;
}

.testimonial-author strong {
    color: #1e293b;
    display: block;
}

.testimonial-author span {
    color: #64748b;
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: #f1f5f9;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #1e293b;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #1e293b;
}

.contact-info p {
    color: #64748b;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item strong {
    color: #1e293b;
    display: block;
}

.contact-item p {
    color: #64748b;
    margin: 0;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background: #f8f9fa;
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #1e293b;
}

.faq .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 60px;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.faq-question {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background: #f8f9fa;
}

.faq-question h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    flex: 1;
    padding-right: 20px;
}

.faq-toggle {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
    transition: transform 0.3s ease;
    min-width: 20px;
    text-align: center;
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: #f8f9fa;
}

.faq-answer p {
    padding: 0 25px 20px;
    margin: 0;
    line-height: 1.6;
    color: #475569;
}

.faq-item.active .faq-answer {
    border-top: 1px solid #e2e8f0;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #2563eb;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.social-link:hover {
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 20px;
    text-align: center;
    color: #cbd5e1;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    overflow-y: auto;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 40px;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    position: relative;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #64748b;
}

.close:hover {
    color: #1e293b;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #374151;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

/* Alert Styles */
.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

/* Plan Selection */
.plan-selection {
    margin-bottom: 30px;
}

.plan-selection h3 {
    margin-bottom: 20px;
    color: #1e293b;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.plan-card {
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: border-color 0.3s;
}

.plan-card:hover {
    border-color: #2563eb;
}

.plan-header h4 {
    color: #1e293b;
    margin-bottom: 10px;
}

.plan-price {
    color: #2563eb;
    font-weight: bold;
    margin-bottom: 15px;
}

.plan-features ul {
    list-style: none;
    margin-bottom: 15px;
}

.plan-features li {
    padding: 5px 0;
    color: #64748b;
    font-size: 0.9rem;
}

.plan-select input[type="radio"] {
    margin-right: 8px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: none;
    }

    .modal-content {
        margin: 10% auto;
        padding: 20px;
    }

    .faq-question {
        padding: 20px 25px;
    }

    .faq-question h3 {
        font-size: 1rem;
    }

    .faq-answer p {
        padding: 0 25px 20px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .features h2,
    .pricing h2,
    .about-text h2,
    .contact h2 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-large {
        width: 100%;
        max-width: 300px;
    }
}