diff --git a/flake.lock b/flake.lock
index 238c22b..c00cfcd 100644
--- a/flake.lock
+++ b/flake.lock
@@ -19,6 +19,22 @@
         "type": "github"
       }
     },
+    "firefox-gnome-theme": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1756083905,
+        "narHash": "sha256-UqYGTBgI5ypGh0Kf6zZjom/vABg7HQocB4gmxzl12uo=",
+        "owner": "rafaelmardojai",
+        "repo": "firefox-gnome-theme",
+        "rev": "b655eaf16d4cbec9c3472f62eee285d4b419a808",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rafaelmardojai",
+        "repo": "firefox-gnome-theme",
+        "type": "github"
+      }
+    },
     "flake-compat": {
       "locked": {
         "lastModified": 1733328505,
@@ -190,6 +206,7 @@
     "root": {
       "inputs": {
         "envfetch": "envfetch",
+        "firefox-gnome-theme": "firefox-gnome-theme",
         "home-manager": "home-manager",
         "nix-flatpak": "nix-flatpak",
         "nixcord": "nixcord",
diff --git a/flake.nix b/flake.nix
index 0565b65..b755774 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,6 +8,7 @@
     nixcord.url = "github:KaylorBen/nixcord/411d48a6";
     nix-flatpak.url = "github:gmodena/nix-flatpak";
     envfetch.url = "github:locomiadev/envfetch";
+    firefox-gnome-theme = { url = "github:rafaelmardojai/firefox-gnome-theme"; flake = false; };
   };
 
   outputs = inputs@{ nixpkgs, home-manager, ... }: {
@@ -30,7 +31,7 @@
               inputs.nix-flatpak.homeManagerModules.nix-flatpak
             ];
 
-            home-manager.backupFileExtension = "backup90";
+            home-manager.backupFileExtension = "backup92";
           }
         ];
       };
diff --git a/modules/packages/default.nix b/modules/packages/default.nix
index 92c32d0..57057b6 100644
--- a/modules/packages/default.nix
+++ b/modules/packages/default.nix
@@ -5,6 +5,7 @@
     ./discord.nix
     ./java.nix
     ./fonts.nix
+    ./firefox.nix
   ];
 
   home.packages = with pkgs; [
@@ -109,7 +110,6 @@
     # internet
 
     spotify
-    firefox-bin
     telegram-desktop
     (chromium.override { enableWideVine = true; })
     revolt-desktop
@@ -217,18 +217,6 @@
     };
   };
 
-  # # declarative firefox installation
-  # 
-  # programs.firefox = {
-  #   enable = true;
-  #   profiles.default = {
-  #     isDefault = true;
-  #     name = "default";
-  #     search.default = "ddg";
-  #     search.privateDefault = "ddg";
-  #   };
-  # };
-
   xdg.mimeApps.defaultApplications = {
     "text/html" = "firefox.desktop";
     "x-scheme-handler/http" = "firefox.desktop";
diff --git a/modules/packages/firefox.nix b/modules/packages/firefox.nix
new file mode 100644
index 0000000..53c3784
--- /dev/null
+++ b/modules/packages/firefox.nix
@@ -0,0 +1,36 @@
+{ inputs, pkgs, ... }:
+
+{
+  # declarative firefox installation
+  
+  programs.librewolf = {
+    enable = true;
+
+    package = pkgs.librewolf-bin;
+    
+    profiles.default = {
+      isDefault = true;
+      name = "default";
+      
+      search.default = "ddg";
+      search.privateDefault = "ddg";
+
+      userChrome = ''
+        @import "firefox-gnome-theme/userChrome.css";
+      '';
+      userContent = ''
+        @import "firefox-gnome-theme/userContent.css";
+      '';
+      settings = {
+        ## Firefox gnome theme ## - https://github.com/rafaelmardojai/firefox-gnome-theme/blob/7cba78f5216403c4d2babb278ff9cc58bcb3ea66/configuration/user.js
+        # (copied into here because home-manager already writes to user.js)
+        "toolkit.legacyUserProfileCustomizations.stylesheets" = true; # Enable customChrome.cs
+        "browser.uidensity" = 0; # Set UI density to normal
+        "svg.context-properties.content.enabled" = true; # Enable SVG context-propertes
+        "browser.theme.dark-private-windows" = false; # Disable private window dark theme
+      };
+    };
+  };
+
+  home.file.".librewolf/default/chrome/firefox-gnome-theme".source = inputs.firefox-gnome-theme;
+} 
diff --git a/modules/sway/default.nix b/modules/sway/default.nix
index 32999b0..9927565 100644
--- a/modules/sway/default.nix
+++ b/modules/sway/default.nix
@@ -129,7 +129,7 @@
         "${modifier}+Print" = "exec flameshot gui --raw | feh --auto-zoom --scale-down -";
         "${modifier}+c" = "exec copyq toggle";
         "${modifier}+o" = "exec gnome-calculator";
-        "${modifier}+i" = "exec firefox";
+        "${modifier}+i" = "exec librewolf";
         "XF86AudioMute" = "exec pactl set-sink-mute @DEFAULT_SINK@ toggle";
         "XF86AudioLowerVolume" = "exec pactl set-sink-volume @DEFAULT_SINK@ -5%";
         "XF86AudioRaiseVolume" = "exec pactl set-sink-volume @DEFAULT_SINK@ +5%";
@@ -196,6 +196,7 @@
         (video (app_id "mpv"))
         (video (app_id "vlc"))
         (video (app_id "firefox"))
+        (video (app_id "librewolf"))
         (video (app_id "org.telegram.desktop"))
         (video {instance = "chromium";})
         (video (class "firefox"))