.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(0,0,0,.8);display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background-color:#fff;padding:20px;border-radius:8px;width:100%;max-width:500px;box-shadow:0 4px 8px rgba(0,0,0,.1);position:relative}.close-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:#333}.modal-actions{display:flex;justify-content:flex-end;gap:10px}.node circle{fill:#ccc;stroke:#ccc;stroke-width:2px}.node text{font-size:12px}.highlighted circle{fill:red;stroke:red;stroke-width:2px}.highlighted{stroke:red!important;stroke-width:2px}.link{stroke:green}.export-controls{position:sticky;float:right!important;bottom:100px;left:100px;z-index:2000;flex-direction:column;align-items:flex-start;pointer-events:auto}@media (max-width:768px){.export-controls{display:none!important}}.export-controls .btn{margin-bottom:.5rem;white-space:nowrap}