:root{--primary-color: #007b8b;--secondary-color: #e6f2f3;--accent-color: #d10a10;--text-color: #333;--bg-color: #f4f4f4}body{margin:0;font-family:Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color)}.calculatie-container{max-width:600px;margin:0 auto;background:#fff;min-height:100vh;display:flex;flex-direction:column}.header{padding:20px;text-align:center;border-bottom:2px solid var(--primary-color)}.logo img{height:40px;width:auto}.subtitle{font-size:12px;margin-top:-5px}.title{background-color:var(--primary-color);color:#fff;padding:10px;font-size:18px;margin:10px -20px 0}.form{padding:20px}.section-algemeen,.section-resultaten{border-left:5px solid var(--primary-color);background-color:#f9fdfd;padding:10px}.section-details{border-left:5px solid #ccc;padding:10px;background-color:#fff}.section{margin-bottom:20px;padding-bottom:15px}.section h2,.section h3{font-size:16px;color:var(--primary-color);margin-bottom:10px;margin-top:0}.field{margin-bottom:15px;display:flex;flex-direction:column}.field label{font-size:12px;margin-bottom:5px}.field input,.field select{padding:10px;border:1px solid #ccc;border-radius:4px;font-size:14px}.input-with-unit{display:flex;align-items:center}.input-with-unit input{flex:1}.input-with-unit span{padding-left:10px;font-size:12px;color:#666;min-width:40px}.field-group,.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.section-verwarmen{background-color:#fff5f5;padding:10px;border-left:5px solid var(--accent-color)}.section-koelen{background-color:#f0f7ff;padding:10px;border-left:5px solid #0056b3}.submit-button{background-color:#666;color:#fff;border:none;padding:15px;width:100%;border-radius:4px;font-size:16px;cursor:pointer;margin-top:20px}.small-print{font-size:10px;color:#999;text-align:center;margin-top:10px}.text-red{color:red}.text-blue{color:#00f}.details-toggle{cursor:pointer;display:flex;align-items:center;gap:10px}@media(max-width:480px){.detail-grid{grid-template-columns:1fr}}