diff --git a/tui/gniza.tcss b/tui/gniza.tcss
index 9240dd5..1a8753f 100644
--- a/tui/gniza.tcss
+++ b/tui/gniza.tcss
@@ -171,9 +171,18 @@ SelectionList {
 
 .back-btn {
     width: auto;
-    min-width: 10;
-    height: 3;
+    min-width: 8;
+    max-width: 12;
+    height: 1;
     margin: 0 0 0 0;
+    padding: 0 1;
+    border: none;
+    background: transparent;
+    color: $text-muted;
+}
+
+.back-btn:hover {
+    color: $text;
 }
 
 #title-bar {
diff --git a/tui/screens/backup.py b/tui/screens/backup.py
index f04e65c..e7c134a 100644
--- a/tui/screens/backup.py
+++ b/tui/screens/backup.py
@@ -19,7 +19,7 @@ class BackupScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="backup-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Backup", id="screen-title")
                 if not targets:
                     yield Static("No sources configured. Add a source first.")
diff --git a/tui/screens/logs.py b/tui/screens/logs.py
index eadabcb..81d6ff5 100644
--- a/tui/screens/logs.py
+++ b/tui/screens/logs.py
@@ -91,7 +91,7 @@ class LogsScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="logs-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Logs", id="screen-title")
                 yield DataTable(id="logs-table")
                 with Horizontal(id="logs-buttons"):
diff --git a/tui/screens/remotes.py b/tui/screens/remotes.py
index 978f64d..4981350 100644
--- a/tui/screens/remotes.py
+++ b/tui/screens/remotes.py
@@ -19,7 +19,7 @@ class RemotesScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="remotes-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Destinations", id="screen-title")
                 yield DataTable(id="remotes-table")
                 with Horizontal(id="remotes-buttons"):
diff --git a/tui/screens/restore.py b/tui/screens/restore.py
index 14c3e64..634071b 100644
--- a/tui/screens/restore.py
+++ b/tui/screens/restore.py
@@ -22,7 +22,7 @@ class RestoreScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="restore-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Restore", id="screen-title")
                 if not targets or not remotes:
                     yield Static("Both sources and destinations must be configured for restore.")
diff --git a/tui/screens/retention.py b/tui/screens/retention.py
index 26862c7..9386fa4 100644
--- a/tui/screens/retention.py
+++ b/tui/screens/retention.py
@@ -22,7 +22,7 @@ class RetentionScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="retention-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Retention Cleanup", id="screen-title")
                 if not targets:
                     yield Static("No sources configured.")
diff --git a/tui/screens/running_tasks.py b/tui/screens/running_tasks.py
index fb3c3a1..309959e 100644
--- a/tui/screens/running_tasks.py
+++ b/tui/screens/running_tasks.py
@@ -35,7 +35,7 @@ class RunningTasksScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="running-tasks-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Running Tasks", id="screen-title")
                 yield DataTable(id="rt-table")
                 with Horizontal(id="rt-buttons"):
diff --git a/tui/screens/schedule.py b/tui/screens/schedule.py
index 75a3c40..e747aff 100644
--- a/tui/screens/schedule.py
+++ b/tui/screens/schedule.py
@@ -22,7 +22,7 @@ class ScheduleScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="schedule-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Schedules", id="screen-title")
                 yield DataTable(id="sched-table")
                 with Horizontal(id="sched-buttons"):
diff --git a/tui/screens/settings.py b/tui/screens/settings.py
index a1a024d..6f1eb71 100644
--- a/tui/screens/settings.py
+++ b/tui/screens/settings.py
@@ -22,7 +22,7 @@ class SettingsScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="settings-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Settings", id="screen-title")
                 with Vertical(classes="settings-section", id="section-general"):
                     yield Static("Log Level:")
diff --git a/tui/screens/snapshots.py b/tui/screens/snapshots.py
index 7037d9f..7ca2c1c 100644
--- a/tui/screens/snapshots.py
+++ b/tui/screens/snapshots.py
@@ -33,7 +33,7 @@ class SnapshotsScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="snapshots-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Snapshots Browser", id="screen-title")
                 if not targets or not remotes:
                     yield Static("Sources and destinations must be configured to browse snapshots.")
diff --git a/tui/screens/targets.py b/tui/screens/targets.py
index 4ad0dd6..3de981d 100644
--- a/tui/screens/targets.py
+++ b/tui/screens/targets.py
@@ -17,7 +17,7 @@ class TargetsScreen(Screen):
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="targets-screen"):
                 with Horizontal(id="title-bar"):
-                    yield Button("← Back", id="btn-back", classes="back-btn")
+                    yield Button("← Back", id="btn-back", classes="back-btn", can_focus=False)
                     yield Static("Sources", id="screen-title")
                 yield DataTable(id="targets-table")
                 with Horizontal(id="targets-buttons"):