diff --git a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Audit/AuditLogPageTests.cs b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Audit/AuditLogPageTests.cs
index cbbf833a..ab4ff50b 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Audit/AuditLogPageTests.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Audit/AuditLogPageTests.cs
@@ -112,6 +112,89 @@ public class AuditLogPageTests
         }
     }
 
+    [SkippableFact]
+    public async Task FilterCombination_ChannelPlusTarget_NarrowsToMatch()
+    {
+        Skip.IfNot(await ClusterAvailability.IsAvailableAsync(), ClusterAvailability.SkipReason);
+
+        // Two rows differing in channel AND target. Applying the channel filter
+        // (ApiOutbound) AND a contains-match target filter together should narrow
+        // the grid to the single matching row — proving the filters AND rather
+        // than OR. The match row is ApiOutbound + target ".../match"; the other
+        // row is DbOutbound + target ".../other" and is excluded on both axes.
+        var runId = Guid.NewGuid().ToString("N");
+        var targetPrefix = $"playwright-test/wave4-audit/{runId}/";
+        var matchId = Guid.NewGuid();
+        var otherId = Guid.NewGuid();
+        var now = DateTime.UtcNow;
+
+        try
+        {
+            // Row 1 — the match: ApiOutbound channel, target ends in "match".
+            await AuditDataSeeder.InsertAuditEventAsync(
+                eventId: matchId,
+                occurredAtUtc: now,
+                channel: "ApiOutbound",
+                kind: "ApiCall",
+                status: "Delivered",
+                target: targetPrefix + "match",
+                httpStatus: 200,
+                durationMs: 42);
+
+            // Row 2 — the non-match channel: DbOutbound, target ends in "other".
+            await AuditDataSeeder.InsertAuditEventAsync(
+                eventId: otherId,
+                occurredAtUtc: now,
+                channel: "DbOutbound",
+                kind: "DbWrite",
+                status: "Delivered",
+                target: targetPrefix + "other",
+                durationMs: 17);
+
+            var page = await _fixture.NewAuthenticatedPageAsync();
+            await page.GotoAsync($"{PlaywrightFixture.BaseUrl}/audit/log");
+            await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+            // Apply channel AND target together.
+            await page.Locator("[data-test='filter-channel-select']").SelectOptionAsync("ApiOutbound");
+            await page.FillAsync("#audit-target", targetPrefix + "match");
+            await page.ClickAsync("[data-test='filter-apply']");
+            await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+            // The match row is visible; the other row is absent — the two filters
+            // AND, so a row must satisfy both to survive.
+            await Assertions.Expect(page.Locator($"[data-test='grid-row-{matchId}']")).ToBeVisibleAsync();
+            await Assertions.Expect(page.Locator($"[data-test='grid-row-{otherId}']")).ToHaveCountAsync(0);
+        }
+        finally
+        {
+            await AuditDataSeeder.DeleteByTargetPrefixAsync(targetPrefix);
+        }
+    }
+
+    [SkippableFact]
+    public async Task EmptyResults_AfterApply_ShowsEmptyState()
+    {
+        Skip.IfNot(await ClusterAvailability.IsAvailableAsync(), ClusterAvailability.SkipReason);
+
+        // A fresh random executionId GUID matches nothing — the ExecutionId
+        // filter is an exact match, so a never-seeded GUID is guaranteed-empty by
+        // construction. After Apply the grid renders zero rows and the empty-state
+        // message. No seeding, no teardown.
+        var page = await _fixture.NewAuthenticatedPageAsync();
+        await page.GotoAsync($"{PlaywrightFixture.BaseUrl}/audit/log");
+        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+        await page.FillAsync("#audit-execution-id", Guid.NewGuid().ToString());
+        await page.ClickAsync("[data-test='filter-apply']");
+        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+        // Zero grid rows AND the empty-state literal inside the grid container.
+        await Assertions.Expect(page.Locator("[data-test^='grid-row-']")).ToHaveCountAsync(0);
+        await Assertions.Expect(page.Locator("[data-test='audit-results-grid']"))
+            .ToContainTextAsync("No audit events match the current filter.");
+    }
+
     [SkippableFact]
     public async Task DrilldownDrawer_JsonPrettyPrintsRequestBody()
     {