.cost-calculator{max-width:800px;margin:20px auto;padding:25px;background-color:#fff;border-radius:12px;box-shadow:0 2px 15px rgb(0 0 0 / .1)}.cost-calculator h2{text-align:center;color:#2c3e50;margin-bottom:30px;font-size:24px}.calculator-section{background-color:#f8f9fa;padding:25px;border-radius:8px;margin-bottom:25px}.calc-select{width:100%;padding:12px;margin-bottom:20px;border:2px solid #e0e0e0;border-radius:6px;font-size:16px;color:#2c3e50;background-color:#fff}.input-group{margin-bottom:20px}.input-group label{display:block;margin-bottom:8px;color:#34495e;font-weight:600}.input-group input,.input-group select{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:6px;font-size:16px;transition:all 0.3s ease}.input-group input:focus,.input-group select:focus{border-color:#3498db;outline:none;box-shadow:0 0 5px rgb(52 152 219 / .3)}.checkbox-group{margin:15px 0;display:flex;align-items:center;gap:10px}.checkbox-group input[type="checkbox"]{width:18px;height:18px}.checkbox-group label{color:#34495e;font-weight:400}.calc-button{width:100%;padding:14px;background-color:#27ae60;color:#fff;border:none;border-radius:6px;font-size:16px;font-weight:700;cursor:pointer;transition:background-color 0.3s;margin-top:20px}.calc-button:hover{background-color:#219a52}.results-section{margin-top:30px}.result-box,.breakdown-box{background-color:#f8f9fa;padding:20px;border-radius:8px;margin-bottom:25px}.result-box h3,.breakdown-box h3{color:#2c3e50;margin-bottom:15px;font-size:20px}#cost-result{font-size:24px;color:#27ae60;font-weight:700;text-align:center;margin-bottom:15px}#detailed-result{color:#34495e;line-height:1.6}#breakdown-table{width:100%;border-collapse:collapse;margin-top:15px}#breakdown-table th,#breakdown-table td{padding:12px;text-align:left;border-bottom:1px solid #e0e0e0}#breakdown-table th{background-color:#f1f3f5;font-weight:600;color:#2c3e50}.bulk-discount-rules{background-color:#fff;padding:15px;border-radius:6px;margin-top:20px}.bulk-discount-rules h4{color:#2c3e50;margin-bottom:15px;font-size:16px}.discount-rule{display:flex;gap:10px;margin-bottom:10px}.discount-rule input{flex:1;padding:8px;border:1px solid #e0e0e0;border-radius:4px}.discount-rule button{padding:8px 15px;background-color:#3498db;color:#fff;border:none;border-radius:4px;cursor:pointer;transition:background-color 0.3s}.discount-rule button:hover{background-color:#2980b9}.discount-rule button.remove-rule{background-color:#e74c3c}.discount-rule button.remove-rule:hover{background-color:#c0392b}@media (max-width:768px){.cost-calculator{margin:10px;padding:15px}.discount-rule{flex-direction:column}.discount-rule button{width:100%}}