1

examples/3d/styles.css

@@ -43,8 +43,55 @@ body {
     overflow-y: auto;
 }
 
-.controls h2 {
-    margin-bottom: 15px;
+.collapsible-panel {
+    z-index: 900;
+}
+
+.panel-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 10px;
+    position: sticky;
+    top: 0;
+    background: rgba(0, 0, 0, 0.9);
+    padding-bottom: 10px;
+    z-index: 1;
+}
+
+.panel-toggle {
+    width: auto;
+    min-width: 70px;
+    padding: 6px 10px;
+    margin-top: 0;
+    background: rgba(255, 255, 255, 0.1);
+    color: #fff;
+    border: 1px solid rgba(255, 255, 255, 0.2);
+    border-radius: 6px;
+    font-size: 12px;
+    font-weight: 600;
+    cursor: pointer;
+}
+
+.panel-toggle:hover {
+    background: rgba(255, 255, 255, 0.2);
+}
+
+.panel-body {
+    transition: max-height 0.3s ease;
+}
+
+.panel-body.collapsed {
+    display: none;
+}
+
+.panel-collapsed {
+    background: rgba(0, 0, 0, 0.7);
+}
+
+.controls h2,
+.idle-controls h2 {
+    margin: 0;
     font-size: 18px;
 }
 
@@ -283,3 +330,33 @@ button:disabled {
     color: #888;
     white-space: nowrap;
 }
+
+@media (max-width: 900px) {
+    .controls,
+    .idle-controls {
+        position: fixed;
+        left: 12px;
+        right: 12px;
+        width: auto;
+        max-width: none;
+        padding: 14px;
+        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
+    }
+
+    .controls {
+        top: 12px;
+    }
+
+    .idle-controls {
+        top: auto;
+        bottom: 12px;
+    }
+
+    .panel-header {
+        position: relative;
+    }
+
+    button {
+        font-size: 13px;
+    }
+}