diff --git a/common.nix b/common.nix
index 46741fe..604169a 100644
--- a/common.nix
+++ b/common.nix
@@ -16,7 +16,7 @@
   ];
 
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
-  # xdg.portal.config.common.default = [ "gnome" ];
+  # xdg.portal.config.common.default = [ "cosmic" ];
 
   system.stateVersion = "25.11";
 }
diff --git a/configuration.nix b/configuration.nix
index b620dca..8dd25a2 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -18,7 +18,7 @@
   ];
 
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
-  # xdg.portal.config.common.default = [ "gnome" ];
+  # xdg.portal.config.common.default = [ "cosmic" ];
 
   system.stateVersion = "25.11";
 }
diff --git a/flake.nix b/flake.nix
index 7ded4ac..04ca48c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,9 +7,16 @@
       url = "github:nix-community/home-manager/release-25.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    cosmic-manager = {
+      url = "github:HeitorAugustoLN/cosmic-manager";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        home-manager.follows = "home-manager";
+      };
+    };
   };
 
-  outputs = { self, nixpkgs, home-manager, ... }@inputs:
+  outputs = { self, nixpkgs, home-manager, cosmic-manager, ... }@inputs:
     let
       settings = import ./settings.nix;
       system = "x86_64-linux";
diff --git a/modules/desktop.nix b/modules/desktop.nix
index 4177305..bf10852 100644
--- a/modules/desktop.nix
+++ b/modules/desktop.nix
@@ -1,10 +1,8 @@
 { config, pkgs, ... }:
 
 {
-  services.displayManager.gdm.enable = true;
-  services.desktopManager.gnome.enable = true;
-
-  environment.gnome.excludePackages = with pkgs; [ gnome-tour gnome-user-docs gnome-console epiphany ];
+  services.desktopManager.cosmic.enable = true;
+  services.displayManager.cosmic-greeter.enable = true;
 
   services.printing.enable = true;
 }
diff --git a/modules/home.nix b/modules/home.nix
index be5b245..241b5cd 100644
--- a/modules/home.nix
+++ b/modules/home.nix
@@ -1,12 +1,13 @@
-{ config, pkgs, ... }:
+{ config, pkgs, inputs, ... }:
 
 let
   settings = import ../settings.nix;
   homeModules = [
+    inputs.cosmic-manager.homeManagerModules.cosmic-manager
     ./home/session.nix
     ./home/packages.nix
     ./home/git.nix
-    ./home/gnome.nix
+    ./home/cosmic.nix
     ./home/cli.nix
     ./home/librewolf.nix
     ./home/zed.nix
diff --git a/modules/home/cosmic.nix b/modules/home/cosmic.nix
new file mode 100644
index 0000000..d8ec056
--- /dev/null
+++ b/modules/home/cosmic.nix
@@ -0,0 +1,101 @@
+{ config, lib, cosmicLib, ... }:
+
+{
+  wayland.desktopManager.cosmic = {
+    enable = true;
+
+    # --- Appearance / Theme ---
+    appearance = {
+      theme = {
+        mode = "dark";
+        dark = {
+          # Pink accent color
+          accent = cosmicLib.cosmic.mkRON "optional" {
+            red = 0.91;
+            green = 0.29;
+            blue = 0.60;
+          };
+        };
+      };
+      toolkit = {
+        apply_theme_global = true;
+        show_maximize = true;
+        show_minimize = true;
+        icon_theme = "Cosmic";
+        interface_density = cosmicLib.cosmic.mkRON "enum" "Standard";
+      };
+    };
+
+    # --- Wallpaper ---
+    wallpapers = [
+      {
+        output = "all";
+        source = cosmicLib.cosmic.mkRON "enum" {
+          value = [ "${config.home.homeDirectory}/Assets/wallpapers/sound.png" ];
+          variant = "Path";
+        };
+        scaling_mode = cosmicLib.cosmic.mkRON "enum" "Zoom";
+        filter_method = cosmicLib.cosmic.mkRON "enum" "Lanczos";
+        filter_by_theme = false;
+        sampling_method = cosmicLib.cosmic.mkRON "enum" "Alphanumeric";
+        rotation_frequency = 0;
+      }
+    ];
+
+    # --- Compositor ---
+    compositor = {
+      autotile = false;
+      active_hint = true;
+
+      # Flat mouse acceleration (no accel)
+      input_default = {
+        acceleration = cosmicLib.cosmic.mkRON "optional" {
+          profile = cosmicLib.cosmic.mkRON "optional" (cosmicLib.cosmic.mkRON "enum" "Flat");
+          speed = 0.0;
+        };
+      };
+    };
+
+    # --- Keyboard Shortcuts ---
+    shortcuts = [
+      {
+        # Super+B -> Open browser
+        action = cosmicLib.cosmic.mkRON "enum" {
+          variant = "Spawn";
+          value = [ "librewolf" ];
+        };
+        key = "Super+b";
+        description = cosmicLib.cosmic.mkRON "optional" "Open Browser";
+      }
+      {
+        # Super+E -> Open file manager
+        action = cosmicLib.cosmic.mkRON "enum" {
+          variant = "Spawn";
+          value = [ "cosmic-files" ];
+        };
+        key = "Super+e";
+        description = cosmicLib.cosmic.mkRON "optional" "Open File Manager";
+      }
+    ];
+
+    # --- Panel: show weekday + 24h clock in top panel ---
+    applets.time.settings = {
+      show_weekday = true;
+      show_date_in_top_panel = true;
+      military_time = false;
+    };
+  };
+
+  # --- COSMIC Files ---
+  programs.cosmic-files = {
+    enable = true;
+    settings = {
+      app_theme = cosmicLib.cosmic.mkRON "enum" "System";
+      tab = {
+        folders_first = true;
+        show_hidden = false;
+        view = cosmicLib.cosmic.mkRON "enum" "List";
+      };
+    };
+  };
+}
diff --git a/modules/home/packages.nix b/modules/home/packages.nix
index 928cd34..bd7a08e 100644
--- a/modules/home/packages.nix
+++ b/modules/home/packages.nix
@@ -33,10 +33,6 @@
     pinta
     discord
     signal-desktop
-
-    # GNOME Extensions
-    gnomeExtensions.appindicator
-    gnomeExtensions.gamemode-shell-extension
   ];
 
   programs.obs-studio.enable = true;