diff --git a/AGENTS.md b/AGENTS.md
index 0392f3e..84f9100 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -31,7 +31,7 @@ src/
 
 ## Key Design Decisions
 
-- **Svelte 5 runes** — Use `$state`, `$derived`, `$effect`. Props-based event passing (no Svelte events).
+- **Svelte 5 runes** — Use `$state`, `$derived`, `$effect`. Props-based event passing (no Svelte events). Event handler attributes are all lower-case (e.g. oninput)
 - **No external crypto libraries** — Uses the browser's native Web Crypto API exclusively.
 - **Key never persisted** — Encryption key lives only in `$state` memory; cleared on lock, tab switch, or page close.
 - **Single-file build** — `vite-plugin-singlefile` inlines all JS/CSS; post-build script inlines favicon.
diff --git a/dist/index.html b/dist/index.html
index 14c0c6e..7b2549d 100644
--- a/dist/index.html
+++ b/dist/index.html
@@ -5763,6 +5763,7 @@ function LockScreen($$anchor, $$props) {
 }
 //#endregion
 //#region src/lib/stores/search.svelte.js
+var DEBOUNCE_MS = 300;
 var SearchStore = class {
 	#query = /* @__PURE__ */ state("");
 	get query() {
@@ -5771,6 +5772,13 @@ var SearchStore = class {
 	set query(value) {
 		set(this.#query, value, true);
 	}
+	#debouncedQuery = /* @__PURE__ */ state("");
+	get debouncedQuery() {
+		return get(this.#debouncedQuery);
+	}
+	set debouncedQuery(value) {
+		set(this.#debouncedQuery, value, true);
+	}
 	#activeGroupId = /* @__PURE__ */ state("all");
 	get activeGroupId() {
 		return get(this.#activeGroupId);
@@ -5785,8 +5793,21 @@ var SearchStore = class {
 	set refreshTrigger(value) {
 		set(this.#refreshTrigger, value, true);
 	}
+	#debounceTimer = null;
+	setSearchQuery(value) {
+		this.query = value;
+		if (this.#debounceTimer) clearTimeout(this.#debounceTimer);
+		if (value === "") {
+			this.debouncedQuery = "";
+			this.#debounceTimer = null;
+		} else this.#debounceTimer = setTimeout(() => {
+			this.debouncedQuery = value;
+			this.#debounceTimer = null;
+		}, DEBOUNCE_MS);
+	}
 	clear() {
 		this.query = "";
+		this.debouncedQuery = "";
 		this.activeGroupId = "all";
 	}
 	/** Force subscribed components to re-fetch data. */
@@ -6007,13 +6028,13 @@ function Sidebar($$anchor, $$props) {
 		set_value(input, search.query);
 		set_class(button, 1, `group-item ${search.activeGroupId === "all" ? "active" : ""}`, "svelte-181dlmc");
 	});
-	event("Input", input, (e) => search.query = e.target.value);
+	delegated("input", input, (e) => search.setSearchQuery(e.target.value));
 	delegated("click", button, () => search.activeGroupId = "all");
 	delegated("click", button_4, () => openGroupForm(null));
 	append($$anchor, div);
 	pop();
 }
-delegate(["click"]);
+delegate(["input", "click"]);
 //#endregion
 //#region src/components/EntryList.svelte
 var root_1$6 = /* @__PURE__ */ from_html(`<div class="loading svelte-13s7gu4">Loading entries...</div>`);
@@ -6034,7 +6055,7 @@ function EntryList($$anchor, $$props) {
 		set(loading, true);
 		set(error, "");
 		try {
-			const query = search.query.trim();
+			const query = search.debouncedQuery.trim();
 			const groupId = search.activeGroupId;
 			if (query) set(entries, await searchEntries(query, groupId !== "all" ? { groupId } : {}), true);
 			else if (groupId !== "all") set(entries, await getEntries({ groupId }), true);
@@ -6046,7 +6067,7 @@ function EntryList($$anchor, $$props) {
 		set(loading, false);
 	}
 	user_effect(() => {
-		search.query;
+		search.debouncedQuery;
 		search.activeGroupId;
 		search.refreshTrigger;
 		loadEntries();
@@ -6883,10 +6904,7 @@ function MainLayout($$anchor, $$props) {
 		if (get(sidebarOpen)) $$render(consequent);
 	});
 	var aside = sibling(node, 2);
-	Sidebar(child(aside), { $$events: {
-		back: handleBack,
-		goList
-	} });
+	Sidebar(child(aside), {});
 	reset(aside);
 	var main = sibling(aside, 2);
 	var div_2 = child(main);
diff --git a/src/components/EntryList.svelte b/src/components/EntryList.svelte
index 9a3842b..9acff08 100644
--- a/src/components/EntryList.svelte
+++ b/src/components/EntryList.svelte
@@ -13,7 +13,7 @@
     loading = true
     error = ''
     try {
-      const query = searchStore.query.trim()
+      const query = searchStore.debouncedQuery.trim()
       const groupId = searchStore.activeGroupId
 
       if (query) {
@@ -35,9 +35,9 @@
     loading = false
   }
 
-  // Reload when search query, active group filter, or refresh trigger changes
+  // Reload when debounced search query, active group filter, or refresh trigger changes
   $effect(() => {
-    searchStore.query
+    searchStore.debouncedQuery
     searchStore.activeGroupId
     searchStore.refreshTrigger
     loadEntries()
diff --git a/src/components/MainLayout.svelte b/src/components/MainLayout.svelte
index 971a1cb..0b29cc1 100644
--- a/src/components/MainLayout.svelte
+++ b/src/components/MainLayout.svelte
@@ -58,7 +58,7 @@
 
   <!-- Sidebar -->
   <aside class="sidebar {sidebarOpen ? 'open' : ''}">
-    <Sidebar on:back={handleBack} on:goList={goList} />
+    <Sidebar />
   </aside>
 
   <!-- Main content -->
diff --git a/src/components/Sidebar.svelte b/src/components/Sidebar.svelte
index c82578e..02c39c5 100644
--- a/src/components/Sidebar.svelte
+++ b/src/components/Sidebar.svelte
@@ -96,7 +96,7 @@
       type="text"
       placeholder="Search entries..."
       value={searchStore.query}
-      onInput={(e) => searchStore.query = e.target.value}
+      oninput={(e) => searchStore.setSearchQuery(e.target.value)}
     />
   </div>
 
diff --git a/src/lib/stores/search.svelte.js b/src/lib/stores/search.svelte.js
index 49eb32e..c86997f 100644
--- a/src/lib/stores/search.svelte.js
+++ b/src/lib/stores/search.svelte.js
@@ -3,13 +3,36 @@
  * Shared between Sidebar and EntryList for coordinated filtering.
  */
 
+const DEBOUNCE_MS = 300
+
 export class SearchStore {
-  query = $state('')
+  query = $state('') // raw input value — bound to the search input
+  debouncedQuery = $state('') // debounced value — used for actual search
   activeGroupId = $state('all') // 'all' or a group id
   refreshTrigger = $state(0) // incremented to force a re-fetch
+  #debounceTimer = null
+
+  /**
+   * Update the search query with debouncing.
+   * Call this from the input handler instead of setting `query` directly.
+   */
+  setSearchQuery(value) {
+    this.query = value
+    if (this.#debounceTimer) clearTimeout(this.#debounceTimer)
+    if (value === '') {
+      this.debouncedQuery = ''
+      this.#debounceTimer = null
+    } else {
+      this.#debounceTimer = setTimeout(() => {
+        this.debouncedQuery = value
+        this.#debounceTimer = null
+      }, DEBOUNCE_MS)
+    }
+  }
 
   clear() {
     this.query = ''
+    this.debouncedQuery = ''
     this.activeGroupId = 'all'
   }
 
diff --git a/tests/lib/stores/search.test.js b/tests/lib/stores/search.test.js
index 352cdfc..eb3e916 100644
--- a/tests/lib/stores/search.test.js
+++ b/tests/lib/stores/search.test.js
@@ -18,12 +18,12 @@ describe('SearchStore', () => {
 
   describe('query', () => {
     it('should update query', () => {
-      search.query = 'test'
+      search.setSearchQuery('test')
       expect(search.query).toBe('test')
     })
 
     it('should handle unicode query', () => {
-      search.query = 'тест'
+      search.setSearchQuery('тест')
       expect(search.query).toBe('тест')
     })
   })
@@ -48,7 +48,7 @@ describe('SearchStore', () => {
 
   describe('clear()', () => {
     it('should reset query to empty string', () => {
-      search.query = 'some search'
+      search.setSearchQuery('some search')
       search.clear()
       expect(search.query).toBe('')
     })
@@ -60,7 +60,7 @@ describe('SearchStore', () => {
     })
 
     it('should reset both fields simultaneously', () => {
-      search.query = 'some search'
+      search.setSearchQuery('some search')
       search.activeGroupId = 'group-123'
       search.clear()
       expect(search.query).toBe('')