#drontal-app{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;max-width:600px;margin:0 auto;padding:25px;background:#f8f9fa;border-radius:12px;box-shadow:0 5px 15px rgba(0,0,0,.08)}.form-group{margin-bottom:1.5rem}label{display:block;margin-bottom:.5rem;font-weight:600;color:#2c3e50}input[type=number],input[type=date],select{width:100%;padding:12px 15px;border:1px solid #ced4da;border-radius:8px;font-size:16px;transition:border-color .3s}input:focus,select:focus{border-color:#3498db;outline:none;box-shadow:0 0 0 3px rgba(52,152,219,.2)}.hint{display:block;color:#6c757d;font-size:.85em;margin-top:4px}.radio-group{display:flex;gap:20px;margin-top:8px}.radio-group label{display:flex;align-items:center;font-weight:400;cursor:pointer}.radio-group input{margin-right:8px}.btn-calculate{background:#3498db;color:#fff;border:none;padding:14px 20px;width:100%;border-radius:8px;font-size:17px;font-weight:600;cursor:pointer;transition:background .3s}.btn-calculate:hover{background:#2980b9}.message-container{margin:20px 0;padding:15px;border-radius:8px}.message-error{background:#ffeef0;color:#e74c3c;border-left:4px solid #e74c3c}.message-warning{background:#fff8e6;color:#e67e22;border-left:4px solid #e67e22}.result-container{background:#fff;border-radius:10px;padding:25px;box-shadow:0 3px 10px rgba(0,0,0,.08);animation:fadeIn .6s ease-out}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.result-title{color:#27ae60;margin-top:0;border-bottom:2px solid #f1f2f6;padding-bottom:15px}.result-detail{margin:15px 0;display:flex;align-items:center}.result-icon{width:24px;height:24px;margin-right:12px;color:#3498db}.result-warning{background:#fef9e7;padding:15px;border-radius:8px;margin-top:20px;border-left:4px solid #f1c40f}@media (max-width:600px){#drontal-app{padding:15px}.radio-group{flex-direction:column;gap:10px}}