diff --git a/config/noctalia/ac-idle-inhibit.sh b/config/noctalia/ac-idle-inhibit.sh
new file mode 100644
index 000000000..c2eceefd9
--- /dev/null
+++ b/config/noctalia/ac-idle-inhibit.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+# Inhibit idle when on AC power so noctalia's idle timeouts only fire on battery.
+# Polls every 2s so AC state changes take effect well within the 5-min idle window.
+set -euo pipefail
+
+AC=/sys/class/power_supply/ACAD/online
+
+while true; do
+  if [ "$(cat "$AC" 2>/dev/null)" = "1" ]; then
+    systemd-inhibit --what=idle --why="On AC power" --mode=block sleep 2
+  else
+    sleep 2
+  fi
+done
diff --git a/config/noctalia/default.nix b/config/noctalia/default.nix
index a74511fb5..9ad825351 100644
--- a/config/noctalia/default.nix
+++ b/config/noctalia/default.nix
@@ -9,6 +9,21 @@
     force = true;
   };
 
+  # Inhibit idle when plugged into AC; noctalia's idle timeouts apply on battery only.
+  systemd.user.services.ac-idle-inhibit = {
+    Unit = {
+      Description = "Inhibit idle when on AC power";
+      After = [ "graphical-session.target" ];
+      PartOf = [ "graphical-session.target" ];
+    };
+    Service = {
+      Type = "simple";
+      ExecStart = "${pkgs.bash}/bin/bash ${./ac-idle-inhibit.sh}";
+      Restart = "on-failure";
+    };
+    Install.WantedBy = [ "graphical-session.target" ];
+  };
+
   programs.noctalia-shell = {
     enable = true;
     package = inputs.noctalia-shell.packages.${pkgs.system}.default;
@@ -20,6 +35,7 @@
         capsuleOpacity = 0;
         widgets.left = [
           { id = "Launcher"; }
+          { id = "Workspaces"; }
           {
             id = "Clock";
             formatHorizontal = "yyyy/MM/dd HH:mm:ss";
@@ -44,12 +60,11 @@
           { id = "PowerProfile"; }
           { id = "Volume"; }
           { id = "Brightness"; }
-          { id = "Settings"; }
           { id = "ControlCenter"; }
         ];
       };
       ui = {
-        fontDefault = "JetBrainsMono Nerd Font";
+        fontDefault = "Noto Sans";
         fontFixed = "JetBrainsMono Nerd Font";
       };
       notifications = {
@@ -69,20 +84,36 @@
         compactLockScreen = true;
         autoStartAuth = true;
         allowPasswordWithFprintd = true;
+        lockOnSuspend = true;
       };
       colorSchemes.predefinedScheme = "Dracula-Custom";
       hooks = {
         enabled = true;
-        darkModeChange = ''if [ "$1" = "true" ]; then dconf write /org/gnome/desktop/interface/color-scheme "'prefer-dark'" && dconf write /org/gnome/desktop/interface/gtk-theme "'Adwaita-dark'"; else dconf write /org/gnome/desktop/interface/color-scheme "'prefer-light'" && dconf write /org/gnome/desktop/interface/gtk-theme "'Adwaita'"; fi'';
+        darkModeChange = ''
+          if [ "$1" = "true" ]; then
+            dconf write /org/gnome/desktop/interface/color-scheme "'prefer-dark'"
+            dconf write /org/gnome/desktop/interface/gtk-theme "'Adwaita-dark'"
+            dconf write /org/gnome/desktop/interface/icon-theme "'Adwaita'"
+          else
+            dconf write /org/gnome/desktop/interface/color-scheme "'prefer-light'"
+            dconf write /org/gnome/desktop/interface/gtk-theme "'Adwaita'"
+            dconf write /org/gnome/desktop/interface/icon-theme "'Adwaita'"
+          fi
+        '';
       };
       dock = {
         colorizeIcons = true;
         showLauncherIcon = true;
-        showDockIndicator = true;
+        showDockIndicator = false;
       };
       desktopWidgets.enabled = true;
       wallpaper.enabled = false;
-      idle.enabled = true;
+      idle = {
+        enabled = true;
+        screenOffTimeout = 300; # 5 min on battery
+        lockTimeout = 300;
+        suspendTimeout = 600; # 10 min on battery
+      };
       systemMonitor.enableDgpuMonitoring = true;
       colorSchemes.schedulingMode = "location";
       location.autoLocate = true;
diff --git a/spec/coverage_spec.sh b/spec/coverage_spec.sh
index fa21aae4d..1a6b86de7 100644
--- a/spec/coverage_spec.sh
+++ b/spec/coverage_spec.sh
@@ -360,6 +360,7 @@ config/git-ai/activate.sh
 config/hyprland/scripts/record-screen.sh
 config/hyprland/scripts/toggle-terminal.sh
 config/k3s/activate.sh
+config/noctalia/ac-idle-inhibit.sh
 config/obsidian/activate.sh
 config/omp/activate.sh
 config/openclaw/hydrate.sh