Remove idx from docs navigation (#122)

* Remove unused Sim IDX documentation section

Co-authored-by: shane <shane@dune.com>

* Refactor navigation structure in docs.json

Co-authored-by: shane <shane@dune.com>

* Refactor navigation to use tabs and hide IDX tab

Co-authored-by: shane <shane@dune.com>

* Fix: Hide additional sidebar navigation elements

Co-authored-by: shane <shane@dune.com>

* Refactor: Hide sidebar tabs and adjust spacing

Co-authored-by: shane <shane@dune.com>

* Refactor: Simplify tab hiding CSS selectors

Co-authored-by: shane <shane@dune.com>

* Cleaning up the sidebar. Hiding it on mobile also.

* Removing the padding top from the table of contents to make it align better with the sidebear and the page's header.

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: shane <shane@dune.com>
Co-authored-by: Derick Ruiz <derick.r.ruiz@gmail.com>

Author: 4 people

styles.css

@@ -73,3 +73,16 @@ a.link:not(.nav-tabs-item){
     border-top-right-radius: 9999px;
     border-bottom-right-radius: 9999px;
 }
+
+/* Hide the tab selector to prevent users from discovering IDX */
+.nav-tabs-item,
+.nav-tabs,
+div:has(> .nav-tabs),
+#sidebar-content .sticky,
+#navigation-items button[type="button"] /* Hide it on mobile */ {
+    display: none !important;
+}
+
+#table-of-contents {
+    padding-top: 0 !important;
+}