/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background-color: #ffffff;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: #1d4ed8;
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #1d4ed8;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
    color: white;
    padding-top: 80px;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.8;
    line-height: 1.7;
}

.hero-app-icon {
    margin: 3rem 0;
}

.app-icon {
    margin: 0 auto;
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    display: block;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    object-fit: cover;
}

.cta-button {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    backdrop-filter: blur(10px);
}

.cta-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.button-icon {
    transition: transform 0.3s ease;
}

.cta-button:hover .button-icon {
    transform: translateX(4px);
}

/* App Download Section */
.app-download-section {
    margin: 2rem 0;
    text-align: center;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.app-store-button {
    background: linear-gradient(135deg, #007aff, #0056b3);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.app-store-button:hover {
    background: linear-gradient(135deg, #0056b3, #004085);
    transform: translateY(-2px);
    box-shadow: 0 8px 15px -3px rgba(0, 0, 0, 0.2);
    text-decoration: none;
    color: white;
}

.app-store-button:hover .button-icon {
    transform: scale(1.1);
}

/* Section Titles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: #1f2937;
}

/* Benefits Section */
.benefits {
    padding: 5rem 0;
    background-color: #f8fafc;
}

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

.benefit-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.benefit-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 5rem 0;
}

.features-grid {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.feature-item.reverse {
    direction: rtl;
}

.feature-item.reverse .feature-content {
    direction: ltr;
}

.feature-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.placeholder-image {
    width: 300px;
    height: 200px;
    background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: 0 10px 25px -5px rgba(29, 78, 216, 0.3);
}

.feature-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature-content p {
    color: #6b7280;
    line-height: 1.7;
    font-size: 1.125rem;
}

/* Tax Info Section */
.tax-info {
    padding: 5rem 0;
    background-color: #f8fafc;
}

.tax-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.tax-explanation h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.tax-explanation p {
    margin-bottom: 1rem;
    color: #6b7280;
    line-height: 1.7;
}

.tax-example h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.example-box {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid #1d4ed8;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.example-box p {
    margin-bottom: 0.5rem;
    color: #6b7280;
}

.example-box .highlight {
    color: #1d4ed8;
    font-weight: 600;
    font-size: 1.125rem;
    margin-top: 1rem;
    margin-bottom: 0;
}

/* FAQ Section */
.faq {
    padding: 5rem 0;
}

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

.faq-item {
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 1rem;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.5rem 0;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 500;
    color: #1f2937;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: #1d4ed8;
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

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

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 1.5rem;
}

.faq-answer p {
    color: #6b7280;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: #f8fafc;
}

.contact-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 3rem;
}

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

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1d4ed8;
}

.submit-button {
    width: 100%;
    background: #1d4ed8;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.submit-button:hover {
    background: #1e40af;
}

.contact-note {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: #6b7280;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #d1d5db;
    line-height: 1.6;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-link {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9ca3af;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-item.reverse {
        direction: ltr;
    }
    
    .tax-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .placeholder-image {
        width: 100%;
        max-width: 300px;
        height: 150px;
        font-size: 3rem;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .download-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .app-store-button {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .app-icon {
        width: 80px;
        height: 80px;
    }
    
    .cta-button {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* Impressum Styles */
.impressum {
    padding: 5rem 0;
    background-color: #f8fafc;
    min-height: calc(100vh - 200px);
}

.impressum-content {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.impressum-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 2rem;
    text-align: center;
}

.impressum-section {
    margin-bottom: 2.5rem;
}

.impressum-section:last-child {
    margin-bottom: 0;
}

.impressum-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1d4ed8;
    margin-bottom: 1rem;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.impressum-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.75rem;
    margin-top: 1.5rem;
}

.impressum-section p {
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.impressum-section p:last-child {
    margin-bottom: 0;
}

.impressum-section strong {
    color: #1f2937;
    font-weight: 600;
}

.impressum-section a {
    color: #1d4ed8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.impressum-section a:hover {
    color: #1e40af;
    text-decoration: underline;
}

.company-info,
.contact-info,
.register-info,
.tax-info {
    background-color: #f9fafb;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #1d4ed8;
}

.disclaimer {
    background-color: #fef2f2;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #dc2626;
}

.disclaimer h3 {
    color: #dc2626;
    margin-top: 0;
}

.disclaimer p {
    color: #7f1d1d;
}

/* List styles for impressum/datenschutz */
.impressum-section ul {
    list-style: none;
    padding-left: 0;
    margin: 1rem 0;
}

.impressum-section ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #4b5563;
    line-height: 1.6;
}

.impressum-section ul li:before {
    content: "•";
    color: #1d4ed8;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.impressum-section ul li:last-child {
    margin-bottom: 0;
}

/* Logo link styles */
.logo-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-link:hover {
    color: inherit;
}

/* Responsive Impressum */
@media (max-width: 768px) {
    .impressum-content {
        padding: 2rem;
        margin: 0 1rem;
    }
    
    .impressum-title {
        font-size: 2rem;
    }
    
    .impressum-section h2 {
        font-size: 1.25rem;
    }
    
    .impressum-section h3 {
        font-size: 1.125rem;
    }
}

@media (max-width: 480px) {
    .impressum-content {
        padding: 1.5rem;
        margin: 0 0.5rem;
    }
    
    .impressum-title {
        font-size: 1.75rem;
    }
    
    .company-info,
    .contact-info,
    .register-info,
    .tax-info,
    .disclaimer {
        padding: 1rem;
    }
}