From f0f19125d56be66e36c48a068238bce3371a3cc1 Mon Sep 17 00:00:00 2001
From: Yuri Karamian <yuri@arkhost.com>
Date: Sat, 20 Jun 2026 14:45:11 +0200
Subject: [PATCH] Pin Notebooks header while scrolling, add divider above it
 (#126)

---
 src/lib/components/Sidebar.svelte | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/lib/components/Sidebar.svelte b/src/lib/components/Sidebar.svelte
index 4819c9f..90963ae 100644
--- a/src/lib/components/Sidebar.svelte
+++ b/src/lib/components/Sidebar.svelte
@@ -1010,6 +1010,16 @@
 		flex: 1;
 		overflow-y: auto;
 		padding: 4px 0;
+		border-top: 1px solid var(--border-light);
+	}
+
+	/* Pin the Notebooks header so its collapse/expand-all button stays reachable while the tree
+	   scrolls; the section's border-top draws the divider above it, matching the Tags section. (issue #126) */
+	.section > .section-header {
+		position: sticky;
+		top: 0;
+		z-index: 1;
+		background: var(--bg-secondary);
 	}
 
 	.tags-section {