* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: -5px;
}

.logo span {
    font-size: 12px;
    color: #64748b;
    font-weight: 500;
}

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

.nav-menu a {
    text-decoration: none;
    color: #334155;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: #334155;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.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: 48px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-text p {
    font-size: 18px;
    color: #64748b;
    margin-bottom: 30px;
    line-height: 1.7;
}

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

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #2563eb;
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

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

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

.hero-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.feature-card {
    background: #f8fafc;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
}

.feature-card p {
    color: #64748b;
    line-height: 1.7;
}

/* Services Section */
.services {
    padding: 100px 0;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.services h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 60px;
}

.services-grid {
    display: grid;
    gap: 60px;
}

.service-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
}

.service-card:nth-child(even) {
    direction: rtl;
}

.service-card:nth-child(even) .service-content {
    direction: ltr;
}

.service-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.service-content {
    padding: 40px;
}

.service-content h3 {
    font-size: 24px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 20px;
}

.service-content p {
    color: #64748b;
    margin-bottom: 15px;
    line-height: 1.7;
}

.service-link {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    margin-top: 15px;
    transition: color 0.3s ease;
}

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

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: #2563eb;
    color: white;
}

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

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-info span {
    font-weight: 500;
}

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

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 24px;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 20px;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
}

.footer-section p {
    color: #94a3b8;
    line-height: 1.7;
    margin-bottom: 20px;
}

.contact-details p {
    margin-bottom: 8px;
}

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

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

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 20px;
    text-align: center;
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

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

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 36px;
    }

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

    .service-card {
        grid-template-columns: 1fr;
    }

    .service-card:nth-child(even) {
        direction: ltr;
    }

    .features h2, .services h2 {
        font-size: 28px;
    }

    .cta-content h2 {
        font-size: 28px;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 28px;
    }

    .hero-text p {
        font-size: 16px;
    }

    .btn-primary, .btn-secondary {
        padding: 12px 24px;
        font-size: 14px;
    }

    .feature-card, .service-content {
        padding: 30px 20px;
    }
}

/* Additional styles for other pages (dakisolatie.html, subsidies-regelingen.html, duurzame-verwarming.html) */

/* Dakisolatie Page Styles */
.dakisolatie-hero {
    margin-top: 80px;
    padding: 80px 0;
    background: linear-gradient(135deg, #e2e8f0 0%, #f1f5f9 100%);
}

.dakisolatie-hero h1 {
    font-size: 42px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
    max-width: 800px;
}

.dakisolatie-hero p {
    font-size: 18px;
    color: #64748b;
    margin-bottom: 30px;
    max-width: 800px;
}

.dakisolatie-content {
    padding: 80px 0;
    background: white;
}

.dakisolatie-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.main-content h2 {
    font-size: 32px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 25px;
    line-height: 1.3;
}

.main-content h3 {
    font-size: 24px;
    font-weight: 600;
    color: #1e293b;
    margin-top: 30px;
    margin-bottom: 15px;
    line-height: 1.4;
}

.main-content p {
    color: #374151;
    line-height: 1.7;
    margin-bottom: 20px;
}

.main-content ul {
    list-style: disc;
    margin-left: 20px;
    margin-bottom: 20px;
}

.main-content ul li {
    color: #374151;
    margin-bottom: 8px;
}

.main-content a {
    color: #2563eb;
    text-decoration: underline;
    transition: color 0.3s ease;
}

.main-content a:hover {
    color: #1d4ed8;
}

.sidebar {
    background: #f8fafc;
    padding: 30px;
    border-radius: 12px;
    height: fit-content;
}

.sidebar h3 {
    font-size: 22px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 20px;
}

.sidebar-contact {
    background: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.sidebar-contact h4 {
    font-size: 18px;
    font-weight: 600;
    color: #2563eb;
    margin-bottom: 10px;
}

.sidebar-contact p {
    color: #374151;
    margin-bottom: 15px;
}

.sidebar-contact .btn-primary {
    width: 100%;
}

/* Responsive for Dakisolatie */
@media (max-width: 1024px) {
    .dakisolatie-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .dakisolatie-hero h1 {
        font-size: 32px;
    }
    
    .main-content h2 {
        font-size: 28px;
    }
    
    .main-content h3 {
        font-size: 22px;
    }
    
    .dakisolatie-content {
        padding: 40px 0;
    }
}

/* Subsidies Page Styles */
.subsidies-overview {
    padding: 80px 0;
    background: #f8fafc;
}

.subsidies-overview h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 60px;
}

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

.subsidy-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.subsidy-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.subsidy-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.subsidy-header h3 {
    font-size: 22px;
    font-weight: 600;
    color: #2563eb;
}

.subsidy-status {
    background: #ecfdf5;
    color: #059669;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.subsidy-card p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 15px;
}

.subsidy-details {
    border-top: 1px solid #e2e8f0;
    padding-top: 15px;
    margin-top: 15px;
}

.subsidy-details p {
    font-size: 14px;
    margin-bottom: 5px;
}

.subsidy-details strong {
    font-weight: 600;
    color: #1e293b;
}

/* Timeline Section */
.timeline-section {
    padding: 80px 0;
    background: white;
}

.timeline-section h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 60px;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 60px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
}

.timeline-item {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.timeline-number {
    width: 60px;
    height: 60px;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.timeline-content {
    margin-left: 30px;
    background: #f8fafc;
    padding: 25px;
    border-radius: 12px;
    flex: 1;
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 20px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 10px solid #f8fafc;
}

.timeline-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 10px;
}

.timeline-content p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 10px;
}

.timeline-duration {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .subsidies-grid {
        grid-template-columns: 1fr;
    }
    
    .subsidy-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .subsidies-overview h2,
    .timeline-section h2 {
        font-size: 28px;
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .timeline-number {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }
    
    .timeline-content {
        margin-left: 15px;
        padding: 20px;
    }
    
    .timeline-content::before {
        left: -8px;
        border-right-width: 8px;
    }
}

/* Heating Systems Overview */
.heating-systems-overview {
    padding: 80px 0;
    background: #f8fafc;
}

.heating-systems-overview h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 60px;
}

.heating-systems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 30px;
}

.heating-system-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.heating-system-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.system-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.heating-system-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 20px;
}

.system-specs {
    background: #f1f5f9;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.spec-item:last-child {
    margin-bottom: 0;
}

.spec-label {
    color: #64748b;
    font-weight: 500;
}

.spec-value {
    color: #1e293b;
    font-weight: 600;
}

.heating-system-card > p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.system-pros {
    list-style: none;
}

.system-pros li {
    color: #059669;
    margin-bottom: 8px;
    font-weight: 500;
}

/* Comparison Table in Sidebar */
.comparison-table {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.comparison-item {
    background: white;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #2563eb;
}

.comparison-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}

.comparison-item p {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 5px;
}

/* Suitability Test */
.suitability-test {
    margin-top: 15px;
}

.test-questions {
    margin: 15px 0;
}

.test-question {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    font-size: 14px;
    color: #374151;
    cursor: pointer;
}

.test-question input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.2);
}

.test-result {
    display: none;
    margin-top: 15px;
    padding: 15px;
    border-radius: 8px;
    font-weight: 500;
}

.result-excellent {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #10b981;
}

.result-good {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #22c55e;
}

.result-moderate {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #f59e0b;
}

.result-poor {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* Installation Process */
.installation-process {
    padding: 80px 0;
    background: white;
}

.installation-process h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 60px;
}

.process-steps {
    max-width: 1000px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    margin-bottom: 40px;
    align-items: flex-start;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    flex-shrink: 0;
    margin-right: 30px;
}

.step-content h3 {
    font-size: 24px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
}

.step-content p {
    color: #64748b;
    line-height: 1.7;
    margin-bottom: 15px;
}

.step-content ul {
    list-style: none;
}

.step-content ul li {
    color: #374151;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.step-content ul li::before {
    content: '→';
    color: #2563eb;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .heating-systems-grid {
        grid-template-columns: 1fr;
    }
    
    .heating-systems-overview h2,
    .installation-process h2 {
        font-size: 28px;
    }
    
    .heating-system-card {
        padding: 20px;
    }
    
    .process-step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin-right: 0;
        margin-bottom: 20px;
    }
    
    .step-content {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .comparison-table {
        gap: 10px;
    }
    
    .comparison-item {
        padding: 12px;
    }
    
    .test-question {
        font-size: 13px;
    }
    
    .step-content h3 {
        font-size: 20px;
    }
}

/* Partner Section - Hidden for SEO/PBN */
.partners-section {
    position: absolute;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
    z-index: -1;
}

.partners-section .container {
    padding: 0;
    margin: 0;
}

.partners-section .partner-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: block;
    font-size: 1px;
    line-height: 1px;
}

.partners-section .partner-list li {
    display: inline;
    font-size: 1px;
    line-height: 1px;
    margin: 0;
    padding: 0;
}

.partners-section .partner-list li a {
    color: transparent;
    font-size: 1px;
    line-height: 1px;
    text-decoration: none;
    display: inline;
}