feat: Enhance dark mode styling and improve dropdown menu behavior for better user experience

custom/otssignange/views/partials/_dashboard-card.twig

@@ -0,0 +1,20 @@
+{#
+  Reusable dashboard card partial.
+  Usage (embed to allow overriding the `body` block):
+  {% embed 'custom/otssignange/views/partials/_dashboard-card.twig' with {'classes':'ots-displays-card'} %}
+    {% block body %}
+      ... inner content ...
+    {% endblock %}
+  {% endembed %}
+#}
+<div class="dashboard-card {{ classes|default('') }}" {% if id is defined %}id="{{ id }}"{% endif %}>
+  {% if title is defined and title %}
+    <div class="dashboard-card-header">
+      {{ title|raw }}
+    </div>
+  {% endif %}
+
+  <div class="dashboard-card-body">
+    {% block body %}{% endblock %}
+  </div>
+</div>