/* ========================================
   SillaArtif - Main Stylesheet
   Professional Heating Systems Company
   ======================================== */

/* 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;
}

img {
    max-width: 100%;
    height: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.3;
    color: #2c3e50;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 500;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

a {
    color: #e74c3c;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #c0392b;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: #e74c3c;
    color: white;
}

.btn-primary:hover {
    background-color: #c0392b;
    color: white;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #e74c3c;
    border: 2px solid #e74c3c;
}

.btn-secondary:hover {
    background-color: #e74c3c;
    color: white;
}

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

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

/* Header */
.header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo img {
    height: 60px;
    width: auto;
}

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

.nav a {
    color: #2c3e50;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav a:hover,
.nav a.active {
    color: #e74c3c;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #e74c3c;
    transition: width 0.3s ease;
}

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

.header-phone a {
    color: #e74c3c;
    font-weight: 600;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 4rem 0;
}

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

.hero-text h1 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #666;
}

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

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

.hero-image img {
    max-width: 400px;
}

/* Services Section */
.services {
    padding: 4rem 0;
    background-color: #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;
    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 30px rgba(0,0,0,0.15);
}

.service-icon {
    text-align: center;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    text-align: center;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.service-card p {
    margin-bottom: 1.5rem;
}

.service-card ul {
    list-style: none;
    padding-left: 0;
}

.service-card ul li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.service-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #e74c3c;
    font-weight: bold;
}

/* About Section */
.about {
    padding: 4rem 0;
}

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

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

.about-features {
    margin-top: 2rem;
}

.feature {
    margin-bottom: 1.5rem;
}

.feature h4 {
    color: #e74c3c;
    margin-bottom: 0.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.stat h3 {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 0.5rem;
}

.stat p {
    color: #666;
    font-weight: 500;
}

/* Reviews Section */
.reviews {
    padding: 4rem 0;
    background-color: #f8f9fa;
}

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

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

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

.review-rating {
    color: #f39c12;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.review-card p {
    font-style: italic;
    margin-bottom: 1rem;
}

.review-card cite {
    color: #e74c3c;
    font-weight: 500;
}

/* Newsletter Section */
.newsletter {
    padding: 4rem 0;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
}

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

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

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

.newsletter-text p {
    color: rgba(255,255,255,0.9);
}

.newsletter-form {
    max-width: 400px;
}

.form-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

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

.newsletter-consent {
    font-size: 0.9rem;
}

.newsletter-consent label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
}

.newsletter-consent a {
    color: rgba(255,255,255,0.9);
    text-decoration: underline;
}

/* Contact Section */
.contact {
    padding: 4rem 0;
}

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

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    color: #e74c3c;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

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

/* Footer */
.footer {
    background-color: #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: #e74c3c;
    margin-bottom: 1rem;
}

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

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

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

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

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Cookie Management */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(44, 62, 80, 0.95);
    color: white;
    padding: 1.5rem;
    z-index: 10000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

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

.cookie-content h3 {
    color: #e74c3c;
    margin-bottom: 1rem;
}

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

.cookie-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 10001;
}

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

.cookie-modal-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

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

.cookie-option label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
}

.cookie-option input[type="checkbox"] {
    margin-top: 0.2rem;
}

.cookie-option p {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: #666;
}

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

/* Blog Styles */
.blog-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 3rem 0;
    text-align: center;
}

.blog-header h1 {
    margin-bottom: 1rem;
}

.blog-posts {
    padding: 4rem 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.blog-post {
    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-post:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.blog-post-image {
    height: 250px;
    overflow: hidden;
}

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

.blog-post-content {
    padding: 1.5rem;
}

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

.blog-date {
    color: #666;
}

.blog-category {
    color: #e74c3c;
    font-weight: 500;
}

.blog-post h2 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

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

.blog-post h2 a:hover {
    color: #e74c3c;
}

.read-more {
    color: #e74c3c;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    color: #c0392b;
}

.blog-newsletter {
    background: #f8f9fa;
    padding: 3rem;
    border-radius: 10px;
    text-align: center;
}

.blog-newsletter-form {
    display: flex;
    max-width: 400px;
    margin: 1rem auto 0;
    gap: 1rem;
}

.blog-newsletter-form input {
    flex: 1;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

/* Blog Article Styles */
.blog-article {
    padding: 2rem 0;
}

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

.breadcrumbs a {
    color: #e74c3c;
}

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

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

.article-category {
    color: #e74c3c;
    font-weight: 500;
}

.article-excerpt {
    font-size: 1.1rem;
    color: #666;
    font-style: italic;
}

.article-image {
    margin-bottom: 2rem;
    text-align: center;
}

.article-image img {
    border-radius: 10px;
    max-height: 400px;
    object-fit: cover;
}

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

.article-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.article-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: #e74c3c;
}

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

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

.article-content blockquote {
    background: #f8f9fa;
    border-left: 4px solid #e74c3c;
    padding: 1rem 1.5rem;
    margin: 2rem 0;
    font-style: italic;
}

.article-cta {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    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: 2rem;
}

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

.article-tags {
    margin: 3rem 0;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

.article-tags h4 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.tag {
    display: inline-block;
    background: #f8f9fa;
    color: #666;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.related-articles {
    margin: 3rem 0;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

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

.related-article {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
}

.related-article h4 {
    margin-bottom: 1rem;
}

.related-article h4 a {
    color: #2c3e50;
}

.related-article h4 a:hover {
    color: #e74c3c;
}

/* Legal Pages */
.legal-page {
    padding: 2rem 0;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

.legal-content h1 {
    margin-bottom: 2rem;
    text-align: center;
}

.legal-content section {
    margin-bottom: 2rem;
}

.legal-content h2 {
    color: #e74c3c;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.legal-content h3 {
    color: #2c3e50;
    margin-bottom: 0.75rem;
    margin-top: 1.5rem;
}

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

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

.cookie-table {
    margin: 2rem 0;
    overflow-x: auto;
}

.cookie-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.cookie-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

.cookie-preferences {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    margin-top: 3rem;
}

/* Thank You Page */
.thank-you {
    padding: 4rem 0;
    text-align: center;
}

.thank-you-content {
    max-width: 600px;
    margin: 0 auto;
}

.thank-you h1 {
    color: #27ae60;
    margin-bottom: 1.5rem;
}

.next-steps {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
    text-align: left;
}

.next-steps h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.contact-info {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

/* Article-specific styles */
.case-study {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
    border-left: 4px solid #e74c3c;
}

.comparison-table,
.cost-breakdown,
.service-schedule,
.quality-checklist,
.success-factors {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
}

.error-box,
.warning-box {
    background: #fff5f5;
    border: 1px solid #fed7d7;
    border-left: 4px solid #e53e3e;
    padding: 1.5rem;
    border-radius: 5px;
    margin: 1.5rem 0;
}

.warning-box {
    background: #fffaf0;
    border-color: #fbb040;
    border-left-color: #f56500;
}

.summary-benefits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.material-comparison,
.radiator-types,
.critical-points {
    margin: 1.5rem 0;
}

.service-calendar h4 {
    color: #e74c3c;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.service-calendar ul {
    margin-bottom: 1rem;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.hidden {
    display: none;
}

.show {
    display: block;
}