*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background-color:#f5f5f5}.container{display:flex;height:100vh;padding:20px;gap:20px}.sidebar{width:300px;background-color:#f0f0f0;border:2px solid #ccc;border-radius:5px;padding:15px;overflow-y:auto}.main-content{flex:1;display:flex;gap:15px}.view-panel{flex:1;background-color:#a3c9f7;border:2px solid #ccc;border-radius:5px;padding:15px;overflow-y:auto}.item{background-color:#e6f3ff;border:1px solid #ccc;border-radius:3px;padding:10px;margin:5px 0;cursor:pointer;transition:background-color .2s}.item:hover{background-color:#d1e7ff}.item.selected{background-color:#fc9;border-color:#f90}.btn{padding:8px 16px;margin:5px 0;border:none;border-radius:4px;cursor:pointer;font-size:14px;transition:background-color .2s}.btn-primary{background-color:#007bff;color:#fff}.btn-primary:hover{background-color:#0056b3}.btn-danger{background-color:#dc3545;color:#fff}.btn-danger:hover{background-color:#c82333}.form-group{margin-bottom:15px}.form-group label{display:block;margin-bottom:5px;font-weight:700}.form-control{width:100%;padding:8px;border:1px solid #ccc;border-radius:4px;font-size:14px}.form-control:focus{outline:none;border-color:#007bff;box-shadow:0 0 0 2px #007bff40}.title{font-size:18px;font-weight:700;margin-bottom:15px;text-align:center}.info-section{background-color:#fff;border:1px solid #ddd;border-radius:4px;padding:15px;margin-top:15px}.info-section h3{margin-bottom:10px;color:#333}.info-field{margin-bottom:8px}.info-field label{font-weight:700;color:#666;display:inline-block;width:100px}.info-field span{color:#333}.item-status{font-size:12px;color:#666;font-style:italic}