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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.25rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
    color: #555;
}

a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #004499;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, #0066cc, #004499);
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 102, 204, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #004499, #0066cc);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 102, 204, 0.3);
    color: white;
}

.btn-secondary {
    background: #6c757d;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #5a6268;
    color: white;
}

.btn-outline {
    background: transparent;
    color: #0066cc;
    padding: 12px 24px;
    border: 2px solid #0066cc;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: #0066cc;
    color: white;
}

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    width: 40px;
    height: 40px;
}

.company-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0066cc;
}

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

.nav-menu a {
    color: #333;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #0066cc;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #0066cc;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.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 {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

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

/* Services Section */
.services {
    padding: 5rem 0;
    background: #f8f9fa;
}

.services h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: block;
}

.service-card h3 {
    color: #0066cc;
    margin-bottom: 1rem;
}

/* About Section */
.about {
    padding: 5rem 0;
}

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

.about-text h2 {
    margin-bottom: 1.5rem;
}

.stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #0066cc;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
}

.feature-item h4 {
    margin-bottom: 0.5rem;
    color: #0066cc;
}

.feature-item p {
    margin: 0;
    font-size: 0.9rem;
}

/* Testimonials Section */
.testimonials {
    padding: 5rem 0;
    background: #f8f9fa;
}

.testimonials h2 {
    text-align: center;
    margin-bottom: 3rem;
}

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

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.testimonial-content p {
    font-style: italic;
    margin-bottom: 1.5rem;
    color: #555;
    font-size: 1.1rem;
}

.testimonial-author strong {
    color: #0066cc;
    display: block;
    margin-bottom: 0.25rem;
}

.testimonial-author span {
    color: #666;
    font-size: 0.9rem;
}

/* Newsletter Section */
.newsletter {
    padding: 5rem 0;
    background: linear-gradient(135deg, #0066cc, #004499);
    color: white;
    text-align: center;
}

.newsletter h2 {
    color: white;
    margin-bottom: 1rem;
}

.newsletter p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    justify-content: center;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
}

.newsletter-form input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

/* Contact Section */
.contact {
    padding: 5rem 0;
}

.contact h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    margin-bottom: 2rem;
    color: #0066cc;
}

.contact-item {
    margin-bottom: 1.5rem;
}

.contact-item strong {
    color: #333;
    display: block;
    margin-bottom: 0.5rem;
}

.contact-form {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    color: #0066cc;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: #2c3e50;
    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 {
    color: #0066cc;
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: #bbb;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover,
.footer-section ul li a.active {
    color: #0066cc;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: #bbb;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #0066cc;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 1rem;
    text-align: center;
    color: #bbb;
}

/* Cookie Management */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #2c3e50;
    color: white;
    padding: 1.5rem;
    z-index: 2000;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content h3 {
    color: white;
    margin-bottom: 1rem;
}

.cookie-content p {
    color: #bbb;
    margin-bottom: 1.5rem;
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cookie-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 3000;
}

.cookie-modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
}

.cookie-option {
    margin-bottom: 1.5rem;
}

.cookie-option label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.cookie-option p {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
    margin-left: 1.5rem;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* Blog Styles */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
    margin-top: 70px;
}

.page-header h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
}

.blog-section {
    padding: 5rem 0;
}

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

.blog-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

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

.blog-content {
    padding: 1.5rem;
}

.blog-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.blog-date {
    color: #666;
}

.blog-category {
    background: #e3f2fd;
    color: #0066cc;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    font-weight: 500;
}

.blog-content h3 {
    margin-bottom: 1rem;
}

.blog-content h3 a {
    color: #333;
    text-decoration: none;
}

.blog-content h3 a:hover {
    color: #0066cc;
}

.read-more {
    color: #0066cc;
    font-weight: 500;
    text-decoration: none;
}

.read-more:hover {
    text-decoration: underline;
}

/* Article Styles */
.article-page {
    padding: 8rem 0 5rem;
    margin-top: 70px;
}

.article-header {
    margin-bottom: 3rem;
}

.breadcrumb {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.breadcrumb a {
    color: #0066cc;
}

.article-meta {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.article-category {
    background: #e3f2fd;
    color: #0066cc;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    font-weight: 500;
}

.article-image {
    margin-bottom: 3rem;
    border-radius: 10px;
    overflow: hidden;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-intro {
    font-size: 1.25rem;
    color: #0066cc;
    font-weight: 500;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f0f8ff;
    border-left: 4px solid #0066cc;
    border-radius: 5px;
}

.article-content h2 {
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 0.5rem;
}

.article-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #0066cc;
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-cta {
    background: linear-gradient(135deg, #0066cc, #004499);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    margin: 3rem 0;
}

.article-cta h3 {
    color: white;
    margin-bottom: 1rem;
}

.article-cta p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
}

.article-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #e9ecef;
}

.article-tags {
    margin-bottom: 2rem;
}

.tag {
    background: #e9ecef;
    color: #6c757d;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    display: inline-block;
}

.article-navigation {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

/* Thank You Page Styles */
.thank-you-page {
    padding: 8rem 0 5rem;
    margin-top: 70px;
    text-align: center;
}

.thank-you-content {
    max-width: 800px;
    margin: 0 auto;
}

.thank-you-icon {
    margin-bottom: 2rem;
}

.thank-you-page h1 {
    color: #28a745;
    margin-bottom: 1rem;
    font-size: 3rem;
}

.thank-you-subtitle {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 3rem;
}

.thank-you-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.detail-item {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    text-align: left;
}

.detail-item h3 {
    color: #0066cc;
    margin-bottom: 1rem;
}

.next-steps {
    margin-bottom: 4rem;
}

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

.step-item {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 50px;
    height: 50px;
    background: #0066cc;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.thank-you-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.contact-reminder {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}

.contact-info-inline {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.contact-item-inline {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item-inline strong {
    min-width: 120px;
    color: #0066cc;
}

/* Legal Pages Styles */
.legal-page {
    padding: 8rem 0 5rem;
    margin-top: 70px;
}

.legal-header {
    text-align: center;
    margin-bottom: 3rem;
}

.legal-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.last-updated {
    color: #666;
    font-style: italic;
}

.legal-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1rem;
    line-height: 1.7;
}

.legal-intro {
    background: #f0f8ff;
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
    border-left: 4px solid #0066cc;
}

.company-info {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.legal-content h2 {
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 0.5rem;
}

.legal-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #0066cc;
}

.legal-content ul,
.legal-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.legal-content li {
    margin-bottom: 0.5rem;
}

.legal-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 2px solid #e9ecef;
    text-align: center;
}

.legal-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Cookie Policy Specific Styles */
.cookie-category {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 4px solid #dee2e6;
}

.cookie-category.necessary {
    border-left-color: #28a745;
    background: #f8fff8;
}

.cookie-category.analytics {
    border-left-color: #0066cc;
    background: #f0f8ff;
}

.cookie-category.marketing {
    border-left-color: #ffc107;
    background: #fffbf0;
}

.cookies-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.cookies-table th,
.cookies-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.cookies-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #495057;
}

.cookie-preferences {
    text-align: center;
    margin: 2rem 0;
}

.browser-settings {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.browser-item {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
}

.browser-item h4 {
    color: #0066cc;
    margin-bottom: 0.5rem;
}

.browser-item p {
    font-size: 0.85rem;
    color: #666;
    margin: 0;
}

/* Article Content Specific Styles */
.problem-box {
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.problem-box.danger {
    background: #fff5f5;
    border-left-color: #dc3545;
}

.problem-box.warning {
    background: #fffbf0;
    border-left-color: #ffc107;
}

.problem-box h4 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.alert-box {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.alert-box h4 {
    color: #856404;
    margin-bottom: 1rem;
}

.diagnostic-list,
.test-checklist {
    background: #f0f8ff;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 4px solid #0066cc;
}

.maintenance-schedule {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.maintenance-schedule h4 {
    color: #0066cc;
    margin-bottom: 0.5rem;
}

.sound-guide {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}

.sound-item {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #0066cc;
}

.sound-item h4 {
    color: #0066cc;
    margin-bottom: 0.5rem;
}

.sound-item p {
    margin: 0.25rem 0;
    font-size: 0.9rem;
}

.warning-box {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.professional-guide {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.professional-guide h3 {
    color: #0066cc;
    margin-bottom: 1rem;
}

.repair-costs table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.repair-costs th,
.repair-costs td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.repair-costs th {
    background: #f8f9fa;
    font-weight: 600;
}

/* Article 2 Specific Styles */
.material-specs {
    background: #e8f4fd;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 4px solid #0066cc;
}

.material-specs h4 {
    color: #0066cc;
    margin-bottom: 1rem;
}

.usage-guide {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.usage-guide h3 {
    color: #0066cc;
    margin-bottom: 0.5rem;
}

.selection-criteria {
    background: #f0f8ff;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.selection-criteria h3 {
    color: #0066cc;
    margin-bottom: 1rem;
}

/* Article 4 Specific Styles */
.impact-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.impact-item {
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid;
}

.impact-item.renovation {
    background: #f0fff0;
    border-left-color: #28a745;
}

.impact-item.replacement {
    background: #fff5f5;
    border-left-color: #dc3545;
}

.impact-item h4 {
    margin-bottom: 1rem;
}

.priority-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.priority-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #0066cc;
}

.priority-item h4 {
    color: #0066cc;
    margin-bottom: 0.5rem;
}

.tco-analysis {
    background: #f0f8ff;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.tco-analysis table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.tco-analysis th,
.tco-analysis td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.tco-analysis th {
    background: #e3f2fd;
    font-weight: 600;
}

.roi-calculation {
    background: #f0fff0;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 4px solid #28a745;
}

.roi-calculation h4 {
    color: #28a745;
    margin-bottom: 1rem;
}

.innovation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.innovation-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
}

.innovation-item h4 {
    color: #0066cc;
    margin-bottom: 1rem;
}

.case-study {
    background: #f0f8ff;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
    border-left: 4px solid #0066cc;
}

.case-study h3 {
    color: #0066cc;
    margin-bottom: 1.5rem;
}

.case-details {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.criteria-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.criteria-item {
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid;
}

.criteria-item.danger {
    background: #fff5f5;
    border-left-color: #dc3545;
}

.criteria-item.warning {
    background: #fffbf0;
    border-left-color: #ffc107;
}

.decision-flowchart {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.flowchart {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.flow-step {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid #0066cc;
}

.flow-step h4 {
    color: #0066cc;
    margin-bottom: 1rem;
}

.new-models {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.model-item {
    background: #f0f8ff;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border-left: 4px solid #0066cc;
}

.model-item h4 {
    color: #0066cc;
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        padding: 1rem 0;
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

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

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

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

    .stats {
        flex-direction: column;
        gap: 1rem;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .cookie-buttons {
        flex-direction: column;
    }

    .modal-buttons {
        flex-direction: column;
    }

    .article-navigation {
        flex-direction: column;
    }

    .thank-you-actions {
        flex-direction: column;
        align-items: center;
    }

    .legal-actions {
        flex-direction: column;
    }

    .contact-item-inline {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .hero-buttons .btn-primary,
    .hero-buttons .btn-outline {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .services,
    .about,
    .testimonials,
    .contact {
        padding: 3rem 0;
    }

    .page-header {
        padding: 6rem 0 3rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .article-page,
    .thank-you-page,
    .legal-page {
        padding: 6rem 0 3rem;
    }

    .impact-comparison {
        grid-template-columns: 1fr;
    }

    .criteria-list {
        grid-template-columns: 1fr;
    }

    .flowchart {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .cookie-banner,
    .cookie-modal,
    .social-links,
    .legal-actions,
    .article-navigation,
    .thank-you-actions {
        display: none;
    }

    .article-page,
    .legal-page {
        margin-top: 0;
        padding-top: 2rem;
    }

    .container {
        max-width: none;
        padding: 0;
    }

    a {
        color: #000;
        text-decoration: underline;
    }

    .btn-primary,
    .btn-secondary,
    .btn-outline {
        background: none;
        color: #000;
        border: 1px solid #000;
        padding: 0.5rem 1rem;
    }
}