Reduce sidebar width by 60px for more compact design

Narrow sidebar from 220px to 160px:
- Reduce font-size from 0.8rem to 0.75rem
- Tighten line-height from 1.5 to 1.4

Creates a more compact, unobtrusive sidebar that takes up
less screen real estate while remaining readable.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

kjvstudy_org/templates/base.html

@@ -117,13 +117,13 @@
             position: fixed;
             top: 2rem;
             left: 2rem;
-            width: 220px;
+            width: 160px;
             max-height: calc(100vh - 4rem);
             overflow-y: auto;
             background: transparent;
             padding: 0;
-            font-size: 0.8rem;
-            line-height: 1.5;
+            font-size: 0.75rem;
+            line-height: 1.4;
             z-index: 100;
         }