diff --git a/firka/lib/ui/theme/style.dart b/firka/lib/ui/theme/style.dart
index 691bbfd..8ce3436 100644
--- a/firka/lib/ui/theme/style.dart
+++ b/firka/lib/ui/theme/style.dart
@@ -1,309 +1 @@
-import 'package:flutter/material.dart';
-
-// Design system token names; ignore non_constant_identifier_names for consistency with design specs
-// ignore_for_file: non_constant_identifier_names
-
-class FirkaFonts {
-  TextStyle H_H1;
-  TextStyle H_18px;
-  TextStyle H_H2;
-  TextStyle H_16px;
-  TextStyle H_14px;
-  TextStyle H_12px;
-
-  TextStyle H_16px_trimmed;
-
-  TextStyle B_16R;
-  TextStyle B_16SB;
-  TextStyle B_15SB;
-
-  TextStyle B_14R;
-  TextStyle B_14SB;
-
-  TextStyle B_12R;
-  TextStyle B_12SB;
-
-  TextStyle P_14;
-  TextStyle P_12;
-
-  FirkaFonts({
-    required this.H_H1,
-    required this.H_18px,
-    required this.H_H2,
-    required this.H_16px,
-    required this.H_14px,
-    required this.H_12px,
-    required this.H_16px_trimmed,
-    required this.B_16R,
-    required this.B_16SB,
-    required this.B_15SB,
-    required this.B_14R,
-    required this.B_14SB,
-    required this.B_12R,
-    required this.B_12SB,
-    required this.P_14,
-    required this.P_12,
-  });
-}
-
-class FirkaColors {
-  Color background;
-  Color backgroundAmoled;
-  Color background0p;
-  Color success;
-  int shadowBlur;
-
-  Color textPrimary;
-  Color textSecondary;
-  Color textTertiary;
-
-  Color textPrimaryLight;
-  Color textSecondaryLight;
-  Color textTertiaryLight;
-
-  Color card;
-  Color cardTranslucent;
-
-  Color buttonSecondaryFill;
-
-  Color accent;
-  Color secondary;
-  Color shadowColor;
-  Color a10p; // 10%
-  Color a15p; // 15%
-
-  Color warningAccent;
-  Color warningText;
-  Color warning15p;
-  Color warningCard;
-
-  Color errorAccent;
-  Color errorText;
-  Color error15p;
-  Color errorCard;
-
-  Color grade5;
-  Color grade4;
-  Color grade3;
-  Color grade2;
-  Color grade1;
-
-  FirkaColors({
-    required this.background,
-    required this.backgroundAmoled,
-    required this.background0p,
-    required this.success,
-    required this.shadowBlur,
-    required this.textPrimary,
-    required this.textSecondary,
-    required this.textTertiary,
-    required this.textPrimaryLight,
-    required this.textSecondaryLight,
-    required this.textTertiaryLight,
-    required this.card,
-    required this.cardTranslucent,
-    required this.buttonSecondaryFill,
-    required this.accent,
-    required this.secondary,
-    required this.shadowColor,
-    required this.a10p,
-    required this.a15p,
-    required this.warningAccent,
-    required this.warningText,
-    required this.warning15p,
-    required this.warningCard,
-    required this.errorAccent,
-    required this.errorText,
-    required this.error15p,
-    required this.errorCard,
-    required this.grade5,
-    required this.grade4,
-    required this.grade3,
-    required this.grade2,
-    required this.grade1,
-  });
-}
-
-class FirkaStyle {
-  FirkaColors colors;
-  FirkaFonts fonts;
-  bool isLight;
-
-  FirkaStyle({
-    required this.isLight,
-    required this.colors,
-    required this.fonts,
-  });
-}
-
-final _defaultFonts = FirkaFonts(
-  H_H1: TextStyle(
-    fontSize: 30,
-    fontFamily: 'Montserrat',
-    fontVariations: [FontVariation("wght", 700)],
-  ),
-  H_18px: TextStyle(
-    fontSize: 18,
-    fontFamily: 'Montserrat',
-    fontVariations: [FontVariation("wght", 700)],
-  ),
-  H_H2: TextStyle(
-    fontSize: 20,
-    fontFamily: 'Montserrat',
-    fontVariations: [FontVariation("wght", 700)],
-  ),
-  H_16px: TextStyle(
-    fontSize: 16,
-    fontFamily: 'Montserrat',
-    fontVariations: [FontVariation("wght", 600)],
-  ),
-  H_14px: TextStyle(
-    fontSize: 14,
-    fontFamily: 'Montserrat',
-    fontVariations: [FontVariation("wght", 600)],
-  ),
-  H_12px: TextStyle(
-    fontSize: 12,
-    fontFamily: 'Montserrat',
-    fontVariations: [FontVariation("wght", 600)],
-  ),
-  H_16px_trimmed: TextStyle(
-    fontSize: 16,
-    fontFamily: 'Montserrat',
-    fontVariations: [FontVariation("wght", 600)],
-    height: 1.3,
-  ),
-  B_16R: TextStyle(
-    fontSize: 16,
-    fontFamily: 'Figtree',
-    fontVariations: [FontVariation("wght", 600)],
-    height: 1.3,
-  ),
-  B_16SB: TextStyle(
-    fontSize: 16,
-    fontFamily: 'Figtree',
-    fontVariations: [FontVariation("wght", 700)],
-    height: 1.3,
-  ),
-  B_14R: TextStyle(
-    fontSize: 14,
-    fontFamily: 'Figtree',
-    fontVariations: [FontVariation("wght", 600)],
-    height: 1.3,
-  ),
-  B_14SB: TextStyle(
-    fontSize: 14,
-    fontFamily: 'Figtree',
-    fontVariations: [FontVariation("wght", 700)],
-    height: 1.3,
-  ),
-  B_15SB: TextStyle(
-    fontSize: 15,
-    fontFamily: 'Figtree',
-    fontVariations: [FontVariation("wght", 700)],
-    height: 1.3,
-  ),
-  B_12R: TextStyle(
-    fontSize: 12,
-    fontFamily: 'Figtree',
-    fontVariations: [FontVariation("wght", 600)],
-    height: 1.3,
-  ),
-  B_12SB: TextStyle(
-    fontSize: 12,
-    fontFamily: 'Figtree',
-    fontVariations: [FontVariation("wght", 700)],
-    height: 1.3,
-  ),
-  P_14: TextStyle(
-    fontSize: 14,
-    fontFamily: 'RobotoMono',
-    fontVariations: [FontVariation("wght", 700)],
-  ),
-  P_12: TextStyle(
-    fontSize: 12,
-    fontFamily: 'RobotoMono',
-    fontVariations: [FontVariation("wght", 700)],
-  ),
-);
-
-final FirkaStyle lightStyle = FirkaStyle(
-  isLight: true,
-  colors: FirkaColors(
-    background: Color(0xFFFAFFF0),
-    backgroundAmoled: Colors.black,
-    background0p: Color(0x00fafff0),
-    success: Color(0xFF92EA3B),
-    shadowBlur: 2,
-    textPrimary: Color(0xFF394C0A),
-    textSecondary: Color(0xCC394C0A),
-    textTertiary: Color(0x80394C0A),
-    textPrimaryLight: Color(0xFF394C0A),
-    textSecondaryLight: Color(0xCC394C0A),
-    textTertiaryLight: Color(0x80394C0A),
-    card: Color(0xFFF3FBDE),
-    cardTranslucent: Color(0x80F3FBDE),
-    buttonSecondaryFill: Color(0xFFFEFFFD),
-    accent: Color(0xFFA7DC22),
-    secondary: Color(0xFF6E8F1B),
-    shadowColor: Color(0x33647e22),
-    a10p: Color(0x1aa7dc22),
-    a15p: Color(0x26a7dc22),
-    warningAccent: Color(0xFFFFA046),
-    warningText: Color(0xFF8F531B),
-    warning15p: Color(0x26FFA046),
-    warningCard: Color(0xFFFAEBDC),
-    errorAccent: Color(0xFFFF54A1),
-    errorText: Color(0xFF8F1B4F),
-    error15p: Color(0x26FF54A1),
-    errorCard: Color(0xFFFADCE9),
-    grade5: Color(0xFF22CCAD),
-    grade4: Color(0xFF92EA3B),
-    grade3: Color(0xFFF9CF00),
-    grade2: Color(0xFFFFA046),
-    grade1: Color(0xFFFF54A1),
-  ),
-  fonts: _defaultFonts,
-);
-
-final FirkaStyle darkStyle = FirkaStyle(
-  isLight: false,
-  colors: FirkaColors(
-    background: Color(0xFF0D1202),
-    backgroundAmoled: Colors.black,
-    background0p: Color(0x00fafff0),
-    success: Color(0xFF92EA3B),
-    shadowBlur: 0,
-    textPrimary: Color(0xFFEAF7CC),
-    textSecondary: Color(0xB3EAF7CC),
-    textTertiary: Color(0x80EAF7CC),
-    textPrimaryLight: Color(0xFF394C0A),
-    textSecondaryLight: Color(0xCC394C0A),
-    textTertiaryLight: Color(0x80394C0A),
-    card: Color(0xFF141905),
-    cardTranslucent: Color(0x80141905),
-    buttonSecondaryFill: Color(0xFF20290B),
-    accent: Color(0xFFA7DC22),
-    secondary: Color(0xFFCBEE71),
-    shadowColor: Color(0x26CBEE71),
-    a10p: Color(0x1AA7DC22),
-    a15p: Color(0x26A7DC22),
-    warningAccent: Color(0xFFFFA046),
-    warningText: Color(0xFFF0B37A),
-    warning15p: Color(0x26FFA046),
-    warningCard: Color(0xFF201203),
-    errorAccent: Color(0xFFFF54A1),
-    errorText: Color(0xFFF59EC5),
-    error15p: Color(0x26FF54A1),
-    errorCard: Color(0xFF1E030F),
-    grade5: Color(0xFF22CCAD),
-    grade4: Color(0xFF92EA3B),
-    grade3: Color(0xFFF9CF00),
-    grade2: Color(0xFFFFA046),
-    grade1: Color(0xFFFF54A1),
-  ),
-  fonts: _defaultFonts,
-);
-
-FirkaStyle appStyle = lightStyle;
-FirkaStyle wearStyle = darkStyle;
+export 'package:firka_common/ui/theme/style.dart';
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..736fb62
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,138 @@
+{
+  "nodes": {
+    "android-nixpkgs": {
+      "inputs": {
+        "devshell": "devshell",
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1772483868,
+        "narHash": "sha256-8/pEATuNjzjvn4LEpIFqluV3i4SjWqv8wfyWCKVOts4=",
+        "owner": "tadfisher",
+        "repo": "android-nixpkgs",
+        "rev": "9bc71fd1af6d432a736c0cbe6255988cbb05890c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "tadfisher",
+        "repo": "android-nixpkgs",
+        "type": "github"
+      }
+    },
+    "devshell": {
+      "inputs": {
+        "nixpkgs": [
+          "android-nixpkgs",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1768818222,
+        "narHash": "sha256-460jc0+CZfyaO8+w8JNtlClB2n4ui1RbHfPTLkpwhU8=",
+        "owner": "numtide",
+        "repo": "devshell",
+        "rev": "255a2b1725a20d060f566e4755dbf571bbbb5f76",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "devshell",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1772433332,
+        "narHash": "sha256-izhTDFKsg6KeVBxJS9EblGeQ8y+O8eCa6RcW874vxEc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "cf59864ef8aa2e178cccedbe2c178185b0365705",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "android-nixpkgs": "android-nixpkgs",
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..b309943
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,47 @@
+{
+  description = "Firka — development environment";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    android-nixpkgs = {
+      url = "github:tadfisher/android-nixpkgs";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, android-nixpkgs }:
+    flake-utils.lib.eachSystem [ "aarch64-darwin" "x86_64-darwin" "x86_64-linux" ] (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        androidSdk = android-nixpkgs.sdk.${system} (sdkPkgs: with sdkPkgs; [
+          cmdline-tools-latest
+          build-tools-34-0-0
+          build-tools-35-0-0
+          build-tools-36-1-0
+          platform-tools
+          platforms-android-34
+          platforms-android-35
+          platforms-android-36
+          ndk-28-2-13676358
+          cmake-3-22-1
+        ]);
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            flutter
+            git
+            jq
+            jdk17
+            androidSdk
+          ];
+
+          shellHook = ''
+            export GRADLE_OPTS="-Dorg.gradle.project.android.aapt2FromMavenOverride=$ANDROID_HOME/build-tools/36.1.0/aapt2"
+            flutter --version | head -1
+            dart --version
+          '';
+        };
+      });
+}