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

html {
    font-size: 16px;
    line-height: 1.6;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    color: #2c3e50;
}

h2 {
    font-size: 2rem;
    color: #2c3e50;
}

h3 {
    font-size: 1.5rem;
    color: #34495e;
}

h4 {
    font-size: 1.25rem;
    color: #34495e;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #2980b9;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
    color: white;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
    color: white;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #2c3e50;
    color: white;
    padding: 20px;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

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

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.cookie-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.cookie-buttons button {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background-color: #3498db;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.cookie-buttons button:hover {
    background-color: #2980b9;
}

/* Navigation */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 999;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo img {
    height: 50px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    font-weight: 500;
    color: #333;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #3498db;
}

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

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 80px 0;
}

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

.hero-text h1 {
    font-size: 3rem;
    color: #2c3e50;
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 30px;
}

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

.hero-image img {
    width: 100%;
    height: auto;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    color: white;
}

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

.header-text h1 {
    color: white;
    font-size: 2.5rem;
}

.header-text p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.header-image img {
    width: 100%;
    height: auto;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.features h2 {
    text-align: center;
    margin-bottom: 60px;
}

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

.feature-card {
    text-align: center;
    padding: 30px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.feature-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

/* Services Section */
.services-preview {
    padding: 80px 0;
}

.services-preview h2 {
    text-align: center;
    margin-bottom: 60px;
}

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

.service-item {
    padding: 30px;
    border-left: 4px solid #3498db;
    background-color: #f8f9fa;
}

.service-item h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

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

/* Main Services */
.main-services {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.main-services h2 {
    text-align: center;
    margin-bottom: 60px;
}

.service-card {
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.service-icon {
    margin-bottom: 20px;
}

.service-icon img {
    width: 80px;
    height: 80px;
}

.service-features {
    list-style: none;
    margin-top: 20px;
}

.service-features li {
    padding: 5px 0;
    color: #7f8c8d;
}

.service-features li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    margin-right: 10px;
}

/* Statistics */
.statistics {
    padding: 60px 0;
    background-color: #3498db;
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

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

.stat-item h3 {
    font-size: 3rem;
    color: white;
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Testimonials */
.testimonials {
    padding: 80px 0;
}

.testimonials h2 {
    text-align: center;
    margin-bottom: 60px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.testimonial-icon {
    margin-bottom: 20px;
}

.testimonial-icon img {
    width: 60px;
    height: 60px;
}

.stars {
    color: #f39c12;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.testimonial-author {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

.testimonial-author strong {
    color: #2c3e50;
}

.testimonial-author span {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Blog */
.blog-posts {
    padding: 80px 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

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

.blog-card:hover {
    transform: translateY(-5px);
}

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

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-content {
    padding: 30px;
}

.blog-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: #7f8c8d;
}

.blog-category {
    background-color: #3498db;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.blog-content h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.blog-content h2 a {
    color: #2c3e50;
}

.blog-content h2 a:hover {
    color: #3498db;
}

.read-more {
    color: #3498db;
    font-weight: 600;
    display: inline-block;
    margin-top: 15px;
}

/* Contact Form */
.contact-section {
    padding: 80px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 2px solid #e9ecef;
    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: #3498db;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid #e9ecef;
    border-radius: 3px;
    position: relative;
}

.contact-info {
    background-color: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.info-item img {
    width: 50px;
    height: 50px;
}

.info-item h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}

/* Article Styles */
.article-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    color: white;
}

.breadcrumbs {
    margin-bottom: 20px;
    opacity: 0.8;
}

.breadcrumbs a {
    color: white;
}

.article-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.article-category {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 4px 8px;
    border-radius: 4px;
}

.article-intro {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-top: 40px;
}

.article-intro img {
    width: 100px;
    height: 100px;
}

.article-intro p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.article-content {
    padding: 80px 0;
}

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

.article-body h2 {
    margin-top: 40px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.article-body h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: #34495e;
}

.article-body ul,
.article-body ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

.article-body li {
    margin-bottom: 8px;
}

.material-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.material-item {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #3498db;
}

.checklist {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin: 30px 0;
}

.checklist h3 {
    margin-bottom: 20px;
    color: #2c3e50;
}

.checklist ul {
    list-style: none;
    margin-left: 0;
}

.checklist li {
    padding: 8px 0;
    color: #27ae60;
    font-weight: 500;
}

.error-section {
    background-color: #fff3cd;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #ffc107;
    margin: 20px 0;
}

.cost-table {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin: 30px 0;
}

.calculation-example {
    background-color: #e8f5e8;
    padding: 30px;
    border-radius: 10px;
    margin: 30px 0;
    border-left: 4px solid #27ae60;
}

.combination-table {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin: 30px 0;
}

.combination-table ul {
    list-style: none;
    margin-left: 0;
}

.combination-table li {
    padding: 8px 0;
    font-weight: 500;
}

.author-box {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin-top: 60px;
    display: flex;
    gap: 20px;
    align-items: center;
}

.author-image img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
}

.author-info h4 {
    margin-bottom: 5px;
    color: #2c3e50;
}

.related-articles {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.related-articles h2 {
    text-align: center;
    margin-bottom: 60px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.related-card {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.related-card img {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
}

.related-card h3 {
    margin-bottom: 15px;
}

.related-card h3 a {
    color: #2c3e50;
}

.related-card h3 a:hover {
    color: #3498db;
}

/* CTA Section */
.cta {
    padding: 80px 0;
    background-color: #3498db;
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
    margin-bottom: 20px;
}

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

.cta .btn-primary {
    background-color: white;
    color: #3498db;
}

.cta .btn-primary:hover {
    background-color: #f8f9fa;
    color: #2980b9;
}

/* Footer */
.footer {
    background-color: #2c3e50;
    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 {
    color: white;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #bdc3c7;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Legal Pages */
.legal-page {
    padding: 80px 0;
}

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

.legal-content h2 {
    margin-top: 40px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.legal-content h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: #34495e;
}

.legal-content ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.legal-content li {
    margin-bottom: 8px;
}

/* Thank You Page */
.thank-you {
    padding: 80px 0;
    text-align: center;
}

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

.thank-you-icon {
    margin-bottom: 30px;
}

.thank-you-icon img {
    width: 100px;
    height: 100px;
}

.thank-you-message {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 40px;
}

.next-steps {
    margin: 60px 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

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

.step-number {
    width: 50px;
    height: 50px;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.contact-info {
    background-color: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
    margin: 40px 0;
}

.phone-number,
.email {
    font-size: 1.2rem;
    font-weight: 600;
    color: #3498db;
    margin-bottom: 20px;
}

.actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
}

/* Newsletter */
.newsletter {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.newsletter-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.newsletter-form {
    display: flex;
    gap: 10px;
}

.newsletter-form input {
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 5px;
    font-size: 1rem;
    width: 300px;
}

.newsletter-form input:focus {
    outline: none;
    border-color: #3498db;
}

/* Cookie Settings */
.cookie-settings {
    text-align: center;
    margin: 30px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .header-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .newsletter-content {
        flex-direction: column;
        text-align: center;
    }
    
    .newsletter-form {
        flex-direction: column;
        width: 100%;
    }
    
    .newsletter-form input {
        width: 100%;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .article-intro {
        flex-direction: column;
        text-align: center;
    }
    
    .author-box {
        flex-direction: column;
        text-align: center;
    }
    
    .material-comparison {
        grid-template-columns: 1fr;
    }
    
    .cookie-content {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero-text h1 {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .feature-card,
    .service-card,
    .testimonial-card {
        padding: 20px;
    }
    
    .article-body {
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-item h3 {
        font-size: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .cookie-banner,
    .cta,
    .footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .article-content {
        padding: 0;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .btn-primary {
        background-color: #000;
        color: #fff;
        border: 2px solid #000;
    }
    
    .btn-secondary {
        background-color: #fff;
        color: #000;
        border: 2px solid #000;
    }
}

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background-color: #3498db;
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 10000;
}

.skip-link:focus {
    top: 6px;
}