Add prominent expand/collapse-all bar between nav and filter panel

Author: Mestyan

css/jaraidFilterSort.css

@@ -20,6 +20,55 @@
     font-size: 14px;
 }
 
+/* Expand/Collapse-all controls: a separate, prominent bar placed
+ * between the page nav menu and the filter/search panel
+ * (#jaraidToolbar), rather than buried among the filter fields.
+ */
+#jaraidRowControls {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 10px;
+    margin: 18px 0 0 0;
+}
+
+#jaraidRowControls .jaraid-btn-prominent {
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    padding: 10px 18px;
+    border: none;
+    border-radius: 6px;
+    background: #333;
+    color: #fff;
+    cursor: pointer;
+    font-family: Georgia, serif;
+    font-size: 15px;
+    font-weight: bold;
+    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
+}
+
+#jaraidRowControls .jaraid-btn-prominent:hover {
+    background: #555;
+}
+
+#jaraidRowControls .jaraid-btn-prominent:focus {
+    outline: 2px solid #6ab0f3;
+    outline-offset: 2px;
+}
+
+#jaraidRowControls .jaraid-btn-icon {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 18px;
+    height: 18px;
+    border-radius: 3px;
+    background: rgba(255, 255, 255, 0.18);
+    font-family: monospace;
+    font-size: 13px;
+    line-height: 1;
+}
+
 #jaraidToolbar .jaraid-row {
     display: flex;
     flex-wrap: wrap;
@@ -246,6 +295,14 @@ tr[role="label"] td.jaraid-sort-desc::after {
 }
 
 @media (max-width: 700px) {
+    #jaraidRowControls {
+                flex-direction: column;
+    }
+    #jaraidRowControls .jaraid-btn-prominent {
+                width: 100%;
+                justify-content: center;
+                box-sizing: border-box;
+    }
     #jaraidToolbar .jaraid-row {
           flex-direction: column;
           align-items: stretch;