:root{--primary-color: #D52B1E;--secondary-color: #FF7F00;--dark-gray: #333333;--medium-gray: #666666;--light-gray: #f4f4f4;--white: #ffffff;--font-family: "Roboto", sans-serif;--success-color: #28a745;--error-color: #dc3545}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;overflow-x:hidden}body{font-family:var(--font-family);line-height:1.6;color:var(--dark-gray);background-color:var(--white);padding-top:80px}body.modal-open{overflow:hidden}.container{width:90%;max-width:1100px;margin:0 auto}header{background:var(--white);color:var(--dark-gray);padding:.75rem 0;position:fixed;top:0;left:0;width:100%;z-index:1000;box-shadow:0 2px 10px #0000001a}header .container{display:flex;justify-content:space-between;align-items:center}.logo-link{text-decoration:none;color:inherit}.logo{font-size:1.5rem;font-weight:700;color:var(--dark-gray)}.logo span{color:var(--primary-color)}nav ul{list-style:none;display:flex;gap:1.5rem}nav a{text-decoration:none;color:var(--dark-gray);font-weight:500;transition:color .3s}nav a:hover{color:var(--primary-color)}.header-actions{display:flex;align-items:center;gap:1rem}.btn-phone{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--primary-color);font-weight:700}.btn-phone svg{width:20px;height:20px}.hamburger{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer}.btn{display:inline-block;padding:.75rem 1.5rem;border-radius:5px;text-decoration:none;font-weight:700;transition:all .3s;border:2px solid transparent;cursor:pointer}.btn-primary{background-color:var(--secondary-color);color:var(--white)}.btn-primary:hover{background-color:#e67300}.btn-secondary{background-color:var(--white);color:var(--primary-color);border-color:var(--white)}.btn-secondary:hover{background-color:#f0f0f0}.btn-outline{background-color:transparent;border-color:var(--primary-color);color:var(--primary-color)}.btn-outline:hover{background-color:var(--primary-color);color:var(--white)}.hero{position:relative;height:600px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:var(--white);background-color:#333;overflow:hidden}.hero:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background-image:url(https://weberwarmtetechniek.nl/wp-content/uploads/2023/08/family-home-1.webp);background-size:cover;background-position:center;opacity:.6;z-index:0}.hero:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:#0009;z-index:1}.hero h1,.hero p,.hero .cta-buttons,.hero .hero-usps{position:relative;z-index:2}.hero h1{font-size:3rem;margin-bottom:1rem;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.hero p{font-size:1.25rem;margin-bottom:2rem;max-width:700px}.hero-usps{display:flex;gap:2rem;margin-bottom:2rem}.usp-item{display:flex;align-items:center;gap:.5rem;font-weight:500}.usp-item svg{width:24px;height:24px;color:var(--secondary-color)}.cta-buttons{display:flex;gap:1rem}section{padding:4rem 0}.section-title{text-align:center;font-size:2.5rem;margin-bottom:1rem;color:var(--dark-gray)}.section-subtitle{text-align:center;font-size:1.1rem;margin-bottom:3rem;color:var(--medium-gray);max-width:700px;margin-left:auto;margin-right:auto}.bg-light{background-color:var(--light-gray)}.bg-dark{background-color:var(--dark-gray);color:var(--white)}.bg-dark .section-title,.bg-dark .section-subtitle{color:var(--white)}.stats{background-color:var(--light-gray);padding:3rem 0}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;text-align:center}.stat-item svg{width:48px;height:48px;color:var(--primary-color);margin-bottom:1rem}.stat-item h3{font-size:2.5rem;color:var(--dark-gray);margin-bottom:.5rem}.service-item{display:flex;align-items:center;gap:2rem;margin-bottom:4rem}.service-item:nth-child(2n){flex-direction:row-reverse}.service-item-image{flex:1;border-radius:10px;overflow:hidden;box-shadow:0 5px 15px #0000001a;position:relative;height:300px}.service-item-image:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,#d52b1e4d,#0000001a);pointer-events:none}.service-item-image img{width:100%;height:100%;object-fit:cover;display:block}.service-item-text{flex:1}.service-item-text h3{font-size:2rem;margin-bottom:1rem}.service-actions{margin-top:1.5rem;display:flex;gap:1rem}#testimonials{background-color:var(--primary-color);color:var(--white)}#testimonials .section-title,#testimonials .section-subtitle{color:var(--white)}.testimonial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.testimonial-card{background:var(--white);color:var(--dark-gray);padding:2rem;border-radius:10px;box-shadow:0 5px 15px #0003}.testimonial-stars{color:gold;margin-bottom:1rem}.testimonial-quote{font-style:italic;margin-bottom:1rem}.testimonial-author{font-weight:700;text-align:right}.waarom-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.waarom-item{text-align:center;padding:2rem;border:1px solid #eee;border-radius:10px;transition:transform .3s}.waarom-item:hover{transform:translateY(-5px);box-shadow:0 5px 15px #0000001a}.waarom-item svg{width:48px;height:48px;color:var(--primary-color);margin-bottom:1rem}.partners-grid{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:3rem}.partner-logo img{height:50px;opacity:.7;transition:opacity .3s;width:auto}.partner-logo img:hover{opacity:1}.subscription-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.subscription-card{border:1px solid #ddd;border-radius:10px;padding:2rem;text-align:center;transition:transform .3s,box-shadow .3s;position:relative;background:var(--white)}.subscription-card.featured{border-color:var(--secondary-color);box-shadow:0 0 20px #ff7f0033;transform:scale(1.05);z-index:1}.subscription-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px #0000001a}.subscription-card.featured:hover{transform:scale(1.05) translateY(-5px)}.subscription-card h3{margin-bottom:1rem;color:var(--dark-gray)}.subscription-card .price{font-size:2rem;font-weight:700;color:var(--primary-color);margin-bottom:1.5rem}.subscription-card .price span{font-size:1rem;color:var(--medium-gray);font-weight:400}.subscription-card .features{list-style:none;margin-bottom:2rem;text-align:left}.subscription-card .features li{margin-bottom:.5rem;padding-left:1.5rem;position:relative}.subscription-card .features li:before{content:"✓";position:absolute;left:0;color:var(--success-color);font-weight:700}.disclaimer{font-size:.8rem;color:var(--medium-gray);margin-bottom:1.5rem}.faq-item{border-bottom:1px solid #eee;margin-bottom:1rem}.faq-question{width:100%;text-align:left;background:none;border:none;padding:1rem;font-size:1.1rem;font-weight:700;display:flex;justify-content:space-between;cursor:pointer;color:var(--dark-gray)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease-out;padding:0 1rem}.faq-answer.open{max-height:500px;padding-bottom:1rem}.contact-form{max-width:700px;margin:0 auto;background:var(--white);padding:2rem;border-radius:10px;box-shadow:0 5px 15px #0000000d}.form-group{margin-bottom:1.5rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.contact-form label{display:block;margin-bottom:.5rem;font-weight:500}.contact-form input,.contact-form select,.contact-form textarea{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:5px;font-family:inherit;font-size:1rem}.contact-form textarea{resize:vertical}.preference-planner{background-color:var(--light-gray);padding:1.5rem;border-radius:8px}.preference-slot{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}.form-error-text{color:var(--error-color);font-size:.85rem;display:block;margin-top:.25rem}.form-success-message{text-align:center;color:var(--success-color)}.form-error-message{text-align:center;color:var(--error-color)}footer{background-color:var(--dark-gray);color:#ccc;padding:4rem 0 1rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:3rem;margin-bottom:2rem}.footer-about .logo{color:var(--white);margin-bottom:1rem;display:block}.footer-links ul{list-style:none}.footer-links a{text-decoration:none;color:#ccc;transition:color .3s;display:block;margin-bottom:.5rem}.footer-links a:hover{color:var(--white)}.cert-logos-grid{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}.cert-logo-item img{height:40px;border-radius:4px;width:auto;opacity:.8;transition:opacity .3s}.cert-logo-item img:hover{opacity:1}.footer-bottom{text-align:center;border-top:1px solid #444;padding-top:1rem}.footer-bottom a{color:#ccc;text-decoration:none}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;z-index:2000;display:flex;justify-content:center;align-items:center;opacity:0;visibility:hidden;transition:all .3s}.modal-overlay.open{opacity:1;visibility:visible}.modal-content{background:var(--white);padding:0;border-radius:10px;max-width:900px;width:95%;max-height:90vh;overflow-y:auto;position:relative}.modal-close-btn{position:absolute;top:1rem;right:1rem;background:#fffc;border:none;font-size:2rem;cursor:pointer;line-height:1;z-index:100;width:40px;height:40px;border-radius:50%;display:flex;justify-content:center;align-items:center}.modal-content .hero{height:300px;padding:2rem}.modal-content .hero h1{font-size:2rem}.modal-content section{padding:3rem 2rem}.terms-content{padding:2rem}.terms-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;flex-wrap:wrap;margin-bottom:1rem}.terms-header h1{margin-bottom:0;font-size:1.8rem;flex:1}.print-btn{display:inline-flex;align-items:center;gap:.5rem;white-space:nowrap;padding:.5rem 1rem;font-size:.9rem}.ketel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:2rem}.ketel-card{border:1px solid #eee;padding:1.5rem;border-radius:8px;text-align:center;display:flex;flex-direction:column;justify-content:space-between;height:100%}.ketel-card img{width:100%;height:250px;object-fit:contain;margin-bottom:1rem}.ketel-price{font-size:1.5rem;font-weight:700;color:var(--primary-color);margin:1rem 0}.ketel-price small{font-size:.8rem;color:var(--medium-gray);display:block;font-weight:400}.features-list{list-style:none;padding:0;margin:1rem 0}.features-list li{padding-left:1.5rem;position:relative;margin-bottom:.5rem}.features-list li:before{content:"•";color:var(--secondary-color);font-weight:700;position:absolute;left:0}.product-feature{display:flex;gap:2rem;align-items:center;margin-top:2rem}.product-feature-image{flex:1;border-radius:10px;overflow:hidden;height:400px;width:100%}.product-feature-image img{width:100%;height:100%;object-fit:cover;display:block}.product-feature-text{flex:1}.whatsapp-fab{position:fixed;bottom:2rem;right:2rem;background-color:#25d366;color:#fff;width:60px;height:60px;border-radius:50%;display:flex;justify-content:center;align-items:center;box-shadow:0 5px 15px #0000004d;z-index:1500;transition:transform .3s}.whatsapp-fab:hover{transform:scale(1.1)}.whatsapp-fab svg{width:35px;height:35px;fill:currentColor}.fade-in-up{opacity:0;transform:translateY(20px);transition:opacity .6s ease-out,transform .6s ease-out}.fade-in-up.is-visible{opacity:1;transform:translateY(0)}@media(max-width:768px){nav ul{position:fixed;top:80px;left:0;width:100%;background:var(--white);flex-direction:column;padding:2rem;transform:translateY(-150%);transition:transform .3s;box-shadow:0 5px 10px #0000001a}nav.active ul{transform:translateY(0)}.header-actions{display:none}nav.active .header-actions{display:flex;flex-direction:column;margin-top:1rem}nav ul li{text-align:center}.hamburger{display:block}.hero h1{font-size:2rem}.service-item{flex-direction:column}.service-item:nth-child(2n){flex-direction:column}.service-item-image{height:250px;width:100%}.stats-grid{grid-template-columns:1fr}.subscription-card.featured{transform:none}.subscription-card.featured:hover{transform:translateY(-5px)}.product-feature{flex-direction:column-reverse}.product-feature-image{height:250px}}@media print{body *{visibility:hidden}.modal-overlay.open,.modal-overlay.open *{visibility:visible}.modal-overlay.open{position:absolute;left:0;top:0;width:100%;height:auto;background:#fff;z-index:9999}.modal-content{box-shadow:none;border:none;width:100%;max-width:100%;max-height:none!important;overflow:visible!important;padding:0;margin:0}.terms-content{padding:0}.modal-close-btn,.print-btn{display:none!important}@page{margin:2cm}}