diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..93ae689a61595aa01e1cbe3df2f88412e5f958b8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,31 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+build/
+.flutter-plugins
+.flutter-plugins-dependencies
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000000000000000000000000000000000000..adcf1e9f5ce10d3e6e5af1a836eb21290fa8d490
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,56 @@
+image: ghcr.io/cirruslabs/flutter:latest
+
+stages:
+  - build-debug
+  - release
+
+android:build-debug:
+  stage: build-debug
+  except:
+    - tags
+    - master
+  script:
+    # Check flutter package
+    - VERSION_NAME="$(grep '^version:' pubspec.yaml | cut -d' ' -f2)"
+    - echo "${VERSION_NAME}"
+    - TAG_NAME="${VERSION_NAME}"
+    - echo "${TAG_NAME}"
+    - >
+      if [ $(git tag -l "${TAG_NAME}") ]; then
+        echo "Tag ${TAG_NAME} already exists."
+        exit 1
+      fi
+    - flutter clean
+    - flutter packages get
+    - flutter pub publish --dry-run
+  interruptible: true
+
+application:release:
+  stage: release
+  image:
+    name: alpine/git
+    entrypoint: [""]
+  only:
+    - master
+  except:
+    - tags
+  dependencies:
+    - android:build-debug
+  script:
+    - apk --no-cache add curl
+    - git config user.email "${GITLAB_USER_EMAIL}"
+    - git config user.name "${GITLAB_USER_NAME}"
+    - git remote set-url origin https://oauth2:${GITLAB_ACCESS_TOKEN}@${CI_SERVER_HOST}/${CI_PROJECT_PATH}
+    - VERSION_NAME="$(grep '^version:' pubspec.yaml | cut -d' ' -f2)"
+    - echo "${VERSION_NAME}"
+    - TAG_NAME="${VERSION_NAME}"
+    - echo "${TAG_NAME}"
+    - >
+      if [ $(git tag -l "${TAG_NAME}") ]; then
+        echo "Tag ${TAG_NAME} already exists."
+        exit 1
+      else
+        git tag -a "${TAG_NAME}" -m "Release ${VERSION_NAME}"
+        git push origin "${TAG_NAME}"
+        curl --silent -d "{\"token\": \"${JABBER_NOTIFICATION_TOKEN}\", \"message\": \"New tag for ${CI_PROJECT_PATH}: ${TAG_NAME}\"}" -H "Content-Type: application/json" -X POST ${JABBER_NOTIFICATION_URL}
+      fi
diff --git a/.metadata b/.metadata
new file mode 100644
index 0000000000000000000000000000000000000000..24472f12f689766a602bf96d2bfc037720fa2afe
--- /dev/null
+++ b/.metadata
@@ -0,0 +1,10 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "2663184aa79047d0a33a14a3b607954f8fdd8730"
+  channel: "stable"
+
+project_type: package
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000000000000000000000000000000000000..42a5eec87603e298d82a29be18067a83abb7a905
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,4 @@
+## 0.0.1
+
+* First release:
+  * Minimal tools, widgets and assets.
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..ba75c69f7f2175380928fff6693b797e2373e603
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1 @@
+TODO: Add your license here.
diff --git a/README.md b/README.md
index 16014d4e85062f372c3253f70680c4de2a6ab687..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/README.md
+++ b/README.md
@@ -1,93 +0,0 @@
-# flutter-toolbox
-
-
-
-## Getting started
-
-To make it easy for you to get started with GitLab, here's a list of recommended next steps.
-
-Already a pro? Just edit this README.md and make it your own. Want to make it easy? [Use the template at the bottom](#editing-this-readme)!
-
-## Add your files
-
-- [ ] [Create](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#create-a-file) or [upload](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#upload-a-file) files
-- [ ] [Add files using the command line](https://docs.gitlab.com/ee/gitlab-basics/add-file.html#add-a-file-using-the-command-line) or push an existing Git repository with the following command:
-
-```
-cd existing_repo
-git remote add origin https://git.harrault.fr/android/flutter-toolbox.git
-git branch -M master
-git push -uf origin master
-```
-
-## Integrate with your tools
-
-- [ ] [Set up project integrations](https://git.harrault.fr/android/flutter-toolbox/-/settings/integrations)
-
-## Collaborate with your team
-
-- [ ] [Invite team members and collaborators](https://docs.gitlab.com/ee/user/project/members/)
-- [ ] [Create a new merge request](https://docs.gitlab.com/ee/user/project/merge_requests/creating_merge_requests.html)
-- [ ] [Automatically close issues from merge requests](https://docs.gitlab.com/ee/user/project/issues/managing_issues.html#closing-issues-automatically)
-- [ ] [Enable merge request approvals](https://docs.gitlab.com/ee/user/project/merge_requests/approvals/)
-- [ ] [Set auto-merge](https://docs.gitlab.com/ee/user/project/merge_requests/merge_when_pipeline_succeeds.html)
-
-## Test and Deploy
-
-Use the built-in continuous integration in GitLab.
-
-- [ ] [Get started with GitLab CI/CD](https://docs.gitlab.com/ee/ci/quick_start/index.html)
-- [ ] [Analyze your code for known vulnerabilities with Static Application Security Testing (SAST)](https://docs.gitlab.com/ee/user/application_security/sast/)
-- [ ] [Deploy to Kubernetes, Amazon EC2, or Amazon ECS using Auto Deploy](https://docs.gitlab.com/ee/topics/autodevops/requirements.html)
-- [ ] [Use pull-based deployments for improved Kubernetes management](https://docs.gitlab.com/ee/user/clusters/agent/)
-- [ ] [Set up protected environments](https://docs.gitlab.com/ee/ci/environments/protected_environments.html)
-
-***
-
-# Editing this README
-
-When you're ready to make this README your own, just edit this file and use the handy template below (or feel free to structure it however you want - this is just a starting point!). Thanks to [makeareadme.com](https://www.makeareadme.com/) for this template.
-
-## Suggestions for a good README
-
-Every project is different, so consider which of these sections apply to yours. The sections used in the template are suggestions for most open source projects. Also keep in mind that while a README can be too long and detailed, too long is better than too short. If you think your README is too long, consider utilizing another form of documentation rather than cutting out information.
-
-## Name
-Choose a self-explaining name for your project.
-
-## Description
-Let people know what your project can do specifically. Provide context and add a link to any reference visitors might be unfamiliar with. A list of Features or a Background subsection can also be added here. If there are alternatives to your project, this is a good place to list differentiating factors.
-
-## Badges
-On some READMEs, you may see small images that convey metadata, such as whether or not all the tests are passing for the project. You can use Shields to add some to your README. Many services also have instructions for adding a badge.
-
-## Visuals
-Depending on what you are making, it can be a good idea to include screenshots or even a video (you'll frequently see GIFs rather than actual videos). Tools like ttygif can help, but check out Asciinema for a more sophisticated method.
-
-## Installation
-Within a particular ecosystem, there may be a common way of installing things, such as using Yarn, NuGet, or Homebrew. However, consider the possibility that whoever is reading your README is a novice and would like more guidance. Listing specific steps helps remove ambiguity and gets people to using your project as quickly as possible. If it only runs in a specific context like a particular programming language version or operating system or has dependencies that have to be installed manually, also add a Requirements subsection.
-
-## Usage
-Use examples liberally, and show the expected output if you can. It's helpful to have inline the smallest example of usage that you can demonstrate, while providing links to more sophisticated examples if they are too long to reasonably include in the README.
-
-## Support
-Tell people where they can go to for help. It can be any combination of an issue tracker, a chat room, an email address, etc.
-
-## Roadmap
-If you have ideas for releases in the future, it is a good idea to list them in the README.
-
-## Contributing
-State if you are open to contributions and what your requirements are for accepting them.
-
-For people who want to make changes to your project, it's helpful to have some documentation on how to get started. Perhaps there is a script that they should run or some environment variables that they need to set. Make these steps explicit. These instructions could also be useful to your future self.
-
-You can also document commands to lint the code or run tests. These steps help to ensure high code quality and reduce the likelihood that the changes inadvertently break something. Having instructions for running tests is especially helpful if it requires external setup, such as starting a Selenium server for testing in a browser.
-
-## Authors and acknowledgment
-Show your appreciation to those who have contributed to the project.
-
-## License
-For open source projects, say how it is licensed.
-
-## Project status
-If you have run out of energy or time for your project, put a note at the top of the README saying that development has slowed down or stopped completely. Someone may choose to fork your project or volunteer to step in as a maintainer or owner, allowing your project to keep going. You can also make an explicit request for maintainers.
diff --git a/analysis_options.yaml b/analysis_options.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..a5744c1cfbe77ae2daba29c74156c617b5f09b77
--- /dev/null
+++ b/analysis_options.yaml
@@ -0,0 +1,4 @@
+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options
diff --git a/assets/fonts/Nunito-Bold.ttf b/assets/fonts/Nunito-Bold.ttf
new file mode 100644
index 0000000000000000000000000000000000000000..6519feb781449ebe0015cbc74dfd9e13110fbba9
Binary files /dev/null and b/assets/fonts/Nunito-Bold.ttf differ
diff --git a/assets/fonts/Nunito-Light.ttf b/assets/fonts/Nunito-Light.ttf
new file mode 100644
index 0000000000000000000000000000000000000000..8a0736c41cd6c2a1225d356bf274de1d0afc3497
Binary files /dev/null and b/assets/fonts/Nunito-Light.ttf differ
diff --git a/assets/fonts/Nunito-Medium.ttf b/assets/fonts/Nunito-Medium.ttf
new file mode 100644
index 0000000000000000000000000000000000000000..88fccdc0638b6f5d6ac49d9d269dc3d518618ad1
Binary files /dev/null and b/assets/fonts/Nunito-Medium.ttf differ
diff --git a/assets/fonts/Nunito-Regular.ttf b/assets/fonts/Nunito-Regular.ttf
new file mode 100644
index 0000000000000000000000000000000000000000..e7b8375a896ef0cd8e06730a78c84532b377e784
Binary files /dev/null and b/assets/fonts/Nunito-Regular.ttf differ
diff --git a/lib/flutter_toolbox.dart b/lib/flutter_toolbox.dart
new file mode 100644
index 0000000000000000000000000000000000000000..1e5f215ab86a2eb32ea18ba73081001a6aa35d10
--- /dev/null
+++ b/lib/flutter_toolbox.dart
@@ -0,0 +1,11 @@
+library;
+
+export 'utils/tools.dart' show printlog;
+
+export 'widgets/headers.dart' show AppHeader;
+export 'widgets/headers.dart' show AppTitle;
+export 'widgets/outlined_text_widget.dart' show OutlinedText;
+export 'widgets/show_debug.dart' show ShowDebugWidget;
+export 'widgets/show_error.dart' show ShowErrorWidget;
+export 'widgets/styled_button.dart' show StyledButton;
+export 'widgets/styled_container.dart' show StyledContainer;
diff --git a/lib/theme/theme.dart b/lib/theme/theme.dart
new file mode 100644
index 0000000000000000000000000000000000000000..138460e58f89bc93afb0899d6cfe8f8e662a466f
--- /dev/null
+++ b/lib/theme/theme.dart
@@ -0,0 +1,192 @@
+import 'package:flutter/material.dart';
+
+/// Colors from Tailwind CSS (v3.0) - June 2022
+///
+/// https://tailwindcss.com/docs/customizing-colors
+
+const int _primaryColor = 0xFF6366F1;
+const MaterialColor primarySwatch = MaterialColor(_primaryColor, <int, Color>{
+  50: Color(0xFFEEF2FF), // indigo-50
+  100: Color(0xFFE0E7FF), // indigo-100
+  200: Color(0xFFC7D2FE), // indigo-200
+  300: Color(0xFFA5B4FC), // indigo-300
+  400: Color(0xFF818CF8), // indigo-400
+  500: Color(_primaryColor), // indigo-500
+  600: Color(0xFF4F46E5), // indigo-600
+  700: Color(0xFF4338CA), // indigo-700
+  800: Color(0xFF3730A3), // indigo-800
+  900: Color(0xFF312E81), // indigo-900
+});
+
+const int _textColor = 0xFF64748B;
+const MaterialColor textSwatch = MaterialColor(_textColor, <int, Color>{
+  50: Color(0xFFF8FAFC), // slate-50
+  100: Color(0xFFF1F5F9), // slate-100
+  200: Color(0xFFE2E8F0), // slate-200
+  300: Color(0xFFCBD5E1), // slate-300
+  400: Color(0xFF94A3B8), // slate-400
+  500: Color(_textColor), // slate-500
+  600: Color(0xFF475569), // slate-600
+  700: Color(0xFF334155), // slate-700
+  800: Color(0xFF1E293B), // slate-800
+  900: Color(0xFF0F172A), // slate-900
+});
+
+const Color errorColor = Color(0xFFDC2626); // red-600
+
+final ColorScheme lightColorScheme = ColorScheme.light(
+  primary: primarySwatch.shade500,
+  secondary: primarySwatch.shade500,
+  onSecondary: Colors.white,
+  error: errorColor,
+  onSurface: textSwatch.shade500,
+  surface: textSwatch.shade50,
+  surfaceContainerHighest: Colors.white,
+  shadow: textSwatch.shade900.withOpacity(.1),
+);
+
+final ColorScheme darkColorScheme = ColorScheme.dark(
+  primary: primarySwatch.shade500,
+  secondary: primarySwatch.shade500,
+  onSecondary: Colors.white,
+  error: errorColor,
+  onSurface: textSwatch.shade300,
+  surface: const Color(0xFF262630),
+  surfaceContainerHighest: const Color(0xFF282832),
+  shadow: textSwatch.shade900.withOpacity(.2),
+);
+
+final ThemeData lightTheme = ThemeData(
+  colorScheme: lightColorScheme,
+  fontFamily: 'Nunito',
+  textTheme: TextTheme(
+    displayLarge: TextStyle(
+      color: textSwatch.shade700,
+      fontFamily: 'Nunito',
+    ),
+    displayMedium: TextStyle(
+      color: textSwatch.shade600,
+      fontFamily: 'Nunito',
+    ),
+    displaySmall: TextStyle(
+      color: textSwatch.shade500,
+      fontFamily: 'Nunito',
+    ),
+    headlineLarge: TextStyle(
+      color: textSwatch.shade700,
+      fontFamily: 'Nunito',
+    ),
+    headlineMedium: TextStyle(
+      color: textSwatch.shade600,
+      fontFamily: 'Nunito',
+    ),
+    headlineSmall: TextStyle(
+      color: textSwatch.shade500,
+      fontFamily: 'Nunito',
+    ),
+    titleLarge: TextStyle(
+      color: textSwatch.shade700,
+      fontFamily: 'Nunito',
+    ),
+    titleMedium: TextStyle(
+      color: textSwatch.shade600,
+      fontFamily: 'Nunito',
+    ),
+    titleSmall: TextStyle(
+      color: textSwatch.shade500,
+      fontFamily: 'Nunito',
+    ),
+    bodyLarge: TextStyle(
+      color: textSwatch.shade700,
+      fontFamily: 'Nunito',
+    ),
+    bodyMedium: TextStyle(
+      color: textSwatch.shade600,
+      fontFamily: 'Nunito',
+    ),
+    bodySmall: TextStyle(
+      color: textSwatch.shade500,
+      fontFamily: 'Nunito',
+    ),
+    labelLarge: TextStyle(
+      color: textSwatch.shade700,
+      fontFamily: 'Nunito',
+    ),
+    labelMedium: TextStyle(
+      color: textSwatch.shade600,
+      fontFamily: 'Nunito',
+    ),
+    labelSmall: TextStyle(
+      color: textSwatch.shade500,
+      fontFamily: 'Nunito',
+    ),
+  ),
+);
+
+final ThemeData darkTheme = lightTheme.copyWith(
+  colorScheme: darkColorScheme,
+  textTheme: TextTheme(
+    displayLarge: TextStyle(
+      color: textSwatch.shade200,
+      fontFamily: 'Nunito',
+    ),
+    displayMedium: TextStyle(
+      color: textSwatch.shade300,
+      fontFamily: 'Nunito',
+    ),
+    displaySmall: TextStyle(
+      color: textSwatch.shade400,
+      fontFamily: 'Nunito',
+    ),
+    headlineLarge: TextStyle(
+      color: textSwatch.shade200,
+      fontFamily: 'Nunito',
+    ),
+    headlineMedium: TextStyle(
+      color: textSwatch.shade300,
+      fontFamily: 'Nunito',
+    ),
+    headlineSmall: TextStyle(
+      color: textSwatch.shade400,
+      fontFamily: 'Nunito',
+    ),
+    titleLarge: TextStyle(
+      color: textSwatch.shade200,
+      fontFamily: 'Nunito',
+    ),
+    titleMedium: TextStyle(
+      color: textSwatch.shade300,
+      fontFamily: 'Nunito',
+    ),
+    titleSmall: TextStyle(
+      color: textSwatch.shade400,
+      fontFamily: 'Nunito',
+    ),
+    bodyLarge: TextStyle(
+      color: textSwatch.shade200,
+      fontFamily: 'Nunito',
+    ),
+    bodyMedium: TextStyle(
+      color: textSwatch.shade300,
+      fontFamily: 'Nunito',
+    ),
+    bodySmall: TextStyle(
+      color: textSwatch.shade400,
+      fontFamily: 'Nunito',
+    ),
+    labelLarge: TextStyle(
+      color: textSwatch.shade200,
+      fontFamily: 'Nunito',
+    ),
+    labelMedium: TextStyle(
+      color: textSwatch.shade300,
+      fontFamily: 'Nunito',
+    ),
+    labelSmall: TextStyle(
+      color: textSwatch.shade400,
+      fontFamily: 'Nunito',
+    ),
+  ),
+);
+
+final ThemeData appTheme = darkTheme;
diff --git a/lib/utils/color_extensions.dart b/lib/utils/color_extensions.dart
new file mode 100644
index 0000000000000000000000000000000000000000..4e55e338f0d3ed98b233d1ef887b7b3e17e29d97
--- /dev/null
+++ b/lib/utils/color_extensions.dart
@@ -0,0 +1,33 @@
+import 'dart:ui';
+
+extension ColorExtension on Color {
+  Color darken([int percent = 40]) {
+    assert(1 <= percent && percent <= 100);
+    final value = 1 - percent / 100;
+    return Color.fromARGB(
+      alpha,
+      (red * value).round(),
+      (green * value).round(),
+      (blue * value).round(),
+    );
+  }
+
+  Color lighten([int percent = 40]) {
+    assert(1 <= percent && percent <= 100);
+    final value = percent / 100;
+    return Color.fromARGB(
+      alpha,
+      (red + ((255 - red) * value)).round(),
+      (green + ((255 - green) * value)).round(),
+      (blue + ((255 - blue) * value)).round(),
+    );
+  }
+
+  Color avg(Color other) {
+    final red = (this.red + other.red) ~/ 2;
+    final green = (this.green + other.green) ~/ 2;
+    final blue = (this.blue + other.blue) ~/ 2;
+    final alpha = (this.alpha + other.alpha) ~/ 2;
+    return Color.fromARGB(alpha, red, green, blue);
+  }
+}
diff --git a/lib/utils/tools.dart b/lib/utils/tools.dart
new file mode 100644
index 0000000000000000000000000000000000000000..fd48b2b009b80b22248d6e7f08a63e96c4065bd7
--- /dev/null
+++ b/lib/utils/tools.dart
@@ -0,0 +1,7 @@
+import 'package:flutter/foundation.dart';
+
+void printlog(String message) {
+  if (!kReleaseMode) {
+    debugPrint(message);
+  }
+}
diff --git a/lib/widgets/headers.dart b/lib/widgets/headers.dart
new file mode 100644
index 0000000000000000000000000000000000000000..b98107b12fabc3114ebfbec994166b588abcf1ad
--- /dev/null
+++ b/lib/widgets/headers.dart
@@ -0,0 +1,32 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+
+class AppHeader extends StatelessWidget {
+  const AppHeader({super.key, required this.text});
+
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      tr(text),
+      textAlign: TextAlign.start,
+      style: Theme.of(context).textTheme.headlineMedium!.apply(fontWeightDelta: 2),
+    );
+  }
+}
+
+class AppTitle extends StatelessWidget {
+  const AppTitle({super.key, required this.text});
+
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      tr(text),
+      textAlign: TextAlign.start,
+      style: Theme.of(context).textTheme.titleLarge!.apply(fontWeightDelta: 2),
+    );
+  }
+}
diff --git a/lib/widgets/outlined_text_widget.dart b/lib/widgets/outlined_text_widget.dart
new file mode 100644
index 0000000000000000000000000000000000000000..9e1884ac1577b990e5476dca6bbfe4845e5f8182
--- /dev/null
+++ b/lib/widgets/outlined_text_widget.dart
@@ -0,0 +1,51 @@
+import 'package:flutter/material.dart';
+
+import 'package:flutter_custom_toolbox/utils/color_extensions.dart';
+
+class OutlinedText extends StatelessWidget {
+  const OutlinedText({
+    super.key,
+    required this.text,
+    required this.fontSize,
+    required this.textColor,
+    this.outlineColor,
+  });
+
+  final String text;
+  final double fontSize;
+  final Color textColor;
+  final Color? outlineColor;
+
+  @override
+  Widget build(BuildContext context) {
+    final double delta = fontSize / 30;
+
+    return Text(
+      text,
+      style: TextStyle(
+        inherit: true,
+        fontSize: fontSize,
+        fontWeight: FontWeight.w600,
+        color: textColor,
+        shadows: [
+          Shadow(
+            offset: Offset(-delta, -delta),
+            color: outlineColor ?? textColor.darken(),
+          ),
+          Shadow(
+            offset: Offset(delta, -delta),
+            color: outlineColor ?? textColor.darken(),
+          ),
+          Shadow(
+            offset: Offset(delta, delta),
+            color: outlineColor ?? textColor.darken(),
+          ),
+          Shadow(
+            offset: Offset(-delta, delta),
+            color: outlineColor ?? textColor.darken(),
+          ),
+        ],
+      ),
+    );
+  }
+}
diff --git a/lib/widgets/show_debug.dart b/lib/widgets/show_debug.dart
new file mode 100644
index 0000000000000000000000000000000000000000..f9fbe2b7bf72358ade97b474ea25afc69de6a439
--- /dev/null
+++ b/lib/widgets/show_debug.dart
@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+
+class ShowDebugWidget extends StatelessWidget {
+  const ShowDebugWidget({
+    super.key,
+    required this.content,
+  });
+
+  final String content;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      decoration: BoxDecoration(
+        color: Colors.red,
+        border: Border.all(
+          color: Colors.grey,
+          width: 2,
+        ),
+      ),
+      child: Padding(
+        padding: const EdgeInsets.all(5),
+        child: Text(
+          content,
+          textAlign: TextAlign.start,
+          style: const TextStyle(fontSize: 13),
+        ),
+      ),
+    );
+  }
+}
diff --git a/lib/widgets/show_error.dart b/lib/widgets/show_error.dart
new file mode 100644
index 0000000000000000000000000000000000000000..9aacdcb7d4796e332b8a3160284aa8ced0e4f1c3
--- /dev/null
+++ b/lib/widgets/show_error.dart
@@ -0,0 +1,17 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+
+class ShowErrorWidget extends StatelessWidget {
+  const ShowErrorWidget({super.key, required this.message});
+
+  final String message;
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      '⚠️ ${tr(message)}',
+      textAlign: TextAlign.start,
+      style: const TextStyle(color: Colors.red),
+    );
+  }
+}
diff --git a/lib/widgets/styled_button.dart b/lib/widgets/styled_button.dart
new file mode 100644
index 0000000000000000000000000000000000000000..5d50a01c41a2bebd1a306d8c1e47b3607f2de24b
--- /dev/null
+++ b/lib/widgets/styled_button.dart
@@ -0,0 +1,211 @@
+import 'package:flutter/material.dart';
+
+import 'package:auto_size_text/auto_size_text.dart';
+
+import 'package:flutter_custom_toolbox/utils/color_extensions.dart';
+
+class StyledButton extends StatelessWidget {
+  const StyledButton({
+    super.key,
+    required this.color,
+    required this.onPressed,
+    this.onLongPress,
+    required this.child,
+  });
+
+  final Color color;
+  final VoidCallback? onPressed;
+  final VoidCallback? onLongPress;
+  final Widget child;
+
+  factory StyledButton.text({
+    Key? key,
+    required VoidCallback? onPressed,
+    VoidCallback? onLongPress,
+    required String caption,
+    required Color color,
+  }) {
+    final Widget captionWidget = AutoSizeText(
+      caption,
+      maxLines: 1,
+      style: TextStyle(
+        inherit: true,
+        fontWeight: FontWeight.w900,
+        color: color.darken(60),
+        shadows: [
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(2, 2),
+          ),
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(2, -2),
+          ),
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(-2, 2),
+          ),
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(-2, -2),
+          ),
+        ],
+      ),
+    );
+
+    return StyledButton(
+      color: color,
+      onPressed: onPressed,
+      onLongPress: onLongPress,
+      child: captionWidget,
+    );
+  }
+
+  factory StyledButton.icon({
+    Key? key,
+    required VoidCallback? onPressed,
+    VoidCallback? onLongPress,
+    required Icon icon,
+    required Color color,
+    required double iconSize,
+  }) {
+    return StyledButton(
+      color: color,
+      onPressed: onPressed,
+      onLongPress: onLongPress,
+      child: Icon(
+        icon.icon,
+        color: icon.color ?? color.darken(60),
+        size: iconSize,
+        shadows: [
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(2, 2),
+          ),
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(2, -2),
+          ),
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(-2, 2),
+          ),
+          Shadow(
+            blurRadius: 5.0,
+            color: color.lighten(60),
+            offset: const Offset(-2, -2),
+          ),
+        ],
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    const double borderWidth = 4;
+    final Color borderColor = color.darken(40);
+    const double borderRadius = 10;
+
+    return Container(
+      margin: const EdgeInsets.all(2),
+      padding: const EdgeInsets.all(2),
+      decoration: BoxDecoration(
+        color: color,
+        border: Border.all(
+          color: borderColor,
+          width: borderWidth,
+        ),
+        borderRadius: BorderRadius.circular(borderRadius),
+      ),
+      child: CustomPaint(
+        painter: StyledButtonPainter(
+          baseColor: color,
+        ),
+        child: MaterialButton(
+          onPressed: onPressed,
+          onLongPress: onLongPress,
+          padding: const EdgeInsets.all(8),
+          materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
+          minWidth: 40,
+          child: child,
+        ),
+      ),
+    );
+  }
+}
+
+class StyledButtonPainter extends CustomPainter {
+  StyledButtonPainter({
+    required this.baseColor,
+  });
+
+  final Color baseColor;
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final Color lightColor = baseColor.lighten(20);
+    final Color darkColor = baseColor.darken(20);
+
+    final Paint paint = Paint()..style = PaintingStyle.fill;
+
+    const double cornerRadius = 6;
+
+    Path topPath = Path()
+      ..moveTo(cornerRadius, 0)
+      ..lineTo(size.width - cornerRadius, 0)
+      ..arcToPoint(
+        Offset(size.width, cornerRadius),
+        radius: const Radius.circular(cornerRadius),
+      )
+      ..lineTo(size.width, size.height * .35)
+      ..quadraticBezierTo(
+        size.width * .4,
+        size.height * .1,
+        0,
+        size.height * .3,
+      )
+      ..lineTo(0, cornerRadius)
+      ..arcToPoint(
+        const Offset(cornerRadius, 0),
+        radius: const Radius.circular(cornerRadius),
+      );
+
+    Path bottomPath = Path()
+      ..moveTo(cornerRadius, size.height)
+      ..lineTo(size.width - cornerRadius, size.height)
+      ..arcToPoint(
+        Offset(size.width, size.height - cornerRadius),
+        radius: const Radius.circular(cornerRadius),
+        clockwise: false,
+      )
+      ..lineTo(size.width, size.height * .7)
+      ..quadraticBezierTo(
+        size.width * .6,
+        size.height * .9,
+        0,
+        size.height * .7,
+      )
+      ..lineTo(0, size.height - cornerRadius)
+      ..arcToPoint(
+        Offset(cornerRadius, size.height),
+        radius: const Radius.circular(cornerRadius),
+        clockwise: false,
+      );
+
+    paint.color = lightColor;
+    canvas.drawPath(topPath, paint);
+
+    paint.color = darkColor;
+    canvas.drawPath(bottomPath, paint);
+  }
+
+  @override
+  bool shouldRepaint(CustomPainter oldDelegate) => false;
+}
diff --git a/lib/widgets/styled_container.dart b/lib/widgets/styled_container.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a68c78c4d1cd8aea88d6f231cf4a20c7acbe4d7d
--- /dev/null
+++ b/lib/widgets/styled_container.dart
@@ -0,0 +1,66 @@
+import 'package:flutter/material.dart';
+
+class StyledContainer extends StatelessWidget {
+  const StyledContainer({
+    super.key,
+    required this.child,
+    this.borderWidth = 20,
+    this.borderRadius = 6,
+    this.depth = 7,
+    this.lowerColor,
+    this.upperColor,
+  });
+
+  final Widget child;
+  final double borderWidth;
+  final double borderRadius;
+  final int depth;
+  final Color? lowerColor;
+  final Color? upperColor;
+
+  Widget nestedContainers({
+    required Widget child,
+    required int containerDepth,
+    required Color lowerColor,
+    required Color upperColor,
+  }) {
+    final double singleBorderWidth = borderWidth / depth;
+    final Color borderColor =
+        Color.lerp(upperColor, lowerColor, (containerDepth / depth - 0.5).abs() * 2) ??
+            Colors.white;
+
+    final double radius = borderRadius + borderRadius * (containerDepth / depth);
+
+    return Container(
+      decoration: BoxDecoration(
+        color: borderColor,
+        border: Border.all(
+          color: borderColor,
+          width: singleBorderWidth,
+        ),
+        borderRadius: BorderRadius.circular(radius),
+      ),
+      child: containerDepth == 0
+          ? Padding(
+              padding: const EdgeInsets.all(8),
+              child: child,
+            )
+          : nestedContainers(
+              child: child,
+              containerDepth: containerDepth - 1,
+              lowerColor: lowerColor,
+              upperColor: upperColor,
+            ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return nestedContainers(
+      child: child,
+      containerDepth: depth,
+      lowerColor: lowerColor ?? Theme.of(context).colorScheme.surface,
+      upperColor: upperColor ?? Theme.of(context).colorScheme.onSurface,
+    );
+  }
+}
diff --git a/pubspec.yaml b/pubspec.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..dac6e0f77e2ac56624b4d72ba65ba0d9ddeedac5
--- /dev/null
+++ b/pubspec.yaml
@@ -0,0 +1,48 @@
+name: flutter_custom_toolbox
+description: "Flutter custom toolbox for org.benoitharrault.* projects."
+
+publish_to: "none"
+
+version: 0.0.1
+
+homepage: https://git.harrault.fr/android/flutter-toolbox
+
+environment:
+  sdk: ^3.5.3
+  flutter: ">=1.17.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+  # base
+  auto_size_text: ^3.0.0
+  easy_localization: ^3.0.1
+  equatable: ^2.0.5
+  flutter_bloc: ^8.1.1
+  hive: ^2.2.3
+  hydrated_bloc: ^9.0.0
+  package_info_plus: ^8.0.0
+  path_provider: ^2.0.11
+  unicons: ^3.0.0
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+  flutter_lints: ^5.0.0
+
+flutter:
+  uses-material-design: true
+
+  fonts:
+    - family: Nunito
+      fonts:
+        - asset: assets/fonts/Nunito-Bold.ttf
+          weight: 700
+        - asset: assets/fonts/Nunito-Medium.ttf
+          weight: 500
+        - asset: assets/fonts/Nunito-Regular.ttf
+          weight: 400
+        - asset: assets/fonts/Nunito-Light.ttf
+          weight: 300
diff --git a/test/flutter_toolbox_test.dart b/test/flutter_toolbox_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..ab73b3a234abf58d9009026cfa184dd11ca56bf2
--- /dev/null
+++ b/test/flutter_toolbox_test.dart
@@ -0,0 +1 @@
+void main() {}