body{margin:0;background-color:#1e1e1e;font-family:Segoe UI,sans-serif}#viewerContainer{width:100vw;height:100vh;position:relative;background-color:#000}.left-toolbar{position:absolute;margin:0 10px;top:60px;left:0;display:flex;flex-direction:column;align-items:center;padding:8px;background-color:#2f343c;z-index:20;border-radius:6px}.left-toolbar .bp5-button{margin:6px 0;min-width:40px;justify-content:center}.top-bar{position:absolute;top:0;left:0;width:100%;height:48px;background-color:#2f343c;display:flex;align-items:center;padding-left:16px;color:#fff;z-index:10;box-shadow:0 2px 4px #0003}.status-bar{position:absolute;bottom:0;left:0;width:100%;height:28px;background-color:#1e1e1e;color:#ccc;font-size:13px;display:flex;align-items:center;padding:0 12px;z-index:10}#layerPanel{position:fixed;top:60px;right:20px;background:#fff;color:#333;border-radius:6px;box-shadow:0 2px 8px #0000004d;max-height:80vh;overflow-y:auto;z-index:30;width:240px;font-size:14px}summary{padding:10px;background-color:#f1f1f1;font-weight:700;cursor:pointer;border-bottom:1px solid #ccc}#layerList{padding:10px}input[type=file]{display:none}