Aggiungi gestore gerarchico livelli mappa

wwwroot/css/app.css

@@ -239,6 +239,98 @@ input[type="checkbox"] {
     padding-top: 9px;
 }
 
+.layer-tree-section {
+    display: grid;
+    gap: 6px;
+    padding-top: 9px;
+}
+
+.layer-tree-section > header {
+    display: grid;
+    gap: 2px;
+    padding: 0 4px;
+}
+
+.layer-tree-section > header small {
+    color: var(--muted);
+    font-size: 10px;
+}
+
+.layer-manager-tree,
+.layer-manager-children {
+    display: grid;
+    gap: 4px;
+}
+
+.layer-manager-group,
+.layer-manager-block,
+.layer-manager-object {
+    border: 1px solid #dce3e6;
+    border-radius: 6px;
+    background: #fff;
+}
+
+.layer-manager-group > summary,
+.layer-manager-block > summary,
+.layer-manager-object > summary {
+    display: grid;
+    grid-template-columns: 28px 20px minmax(0, 1fr) auto;
+    align-items: center;
+    gap: 6px;
+    min-height: 38px;
+    padding: 4px 6px;
+    cursor: pointer;
+    list-style: none;
+}
+
+.layer-manager-group > summary::-webkit-details-marker,
+.layer-manager-block > summary::-webkit-details-marker,
+.layer-manager-object > summary::-webkit-details-marker {
+    display: none;
+}
+
+.layer-drag-handle {
+    width: 28px;
+    height: 28px;
+    border: 0;
+    border-radius: 4px;
+    background: #e9eef0;
+    color: var(--ink);
+    font-size: 18px;
+    line-height: 1;
+    touch-action: none;
+    cursor: grab;
+}
+
+.layer-manager-title {
+    min-width: 0;
+    overflow-wrap: anywhere;
+    font-size: 12px;
+    font-weight: 700;
+}
+
+.layer-manager-count {
+    color: var(--muted);
+    font-size: 10px;
+}
+
+.layer-manager-children {
+    padding: 0 5px 5px 18px;
+}
+
+.layer-manager-details {
+    display: grid;
+    gap: 2px;
+    padding: 0 8px 7px 40px;
+    color: var(--muted);
+    font-size: 10px;
+}
+
+.layer-manager-dragging {
+    opacity: 0.55;
+    outline: 2px solid #2563eb;
+}
+
 .gps-overlay {
     position: absolute;
     top: 72px;