.arbol-container{display:block;justify-content:center;align-items:center;font-family:Segoe UI,sans-serif;padding:1rem;max-width:600px;background:#f9f9f9;border-radius:8px}.nodo-arbol{padding-left:1rem;margin-top:6px;position:relative}.nodo-label{padding:4px;border-radius:4px;transition:background .2s}.nodo-label:hover{background:#e2e8f0}.agregar-btn{margin-left:auto;background:none;border:none;color:#666;font-size:1rem;cursor:pointer}.agregar-btn:hover{color:#2b6cb0}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0006;display:flex;justify-content:center;align-items:center;z-index:999}.modal-contenido{background:#fff;padding:2rem;border-radius:8px;width:300px;box-shadow:0 0 10px #0000004d}.btn-mas-verde{margin-left:auto;background-color:#38a169;border:none;color:#fff;font-size:1rem;border-radius:4px;padding:2px 8px;cursor:pointer;transition:background-color .2s}.btn-mas-verde:hover{background-color:#2f855a}