new project stable version

lib/core/app_colors.dart

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+import 'package:flutter/material.dart';
+
+class AppColors {
+  // --------------------------
+  // ФОНЫ ЭКРАНОВ
+  // --------------------------
+
+  /// Градиент PhoneScreen (ввод телефона)
+  static const LinearGradient phoneScreenBg = LinearGradient(
+    begin: Alignment.topCenter,
+    end: Alignment.bottomCenter,
+    colors: [
+      Color(0xFF293A69),
+      Color(0xFF202741),
+    ],
+  );
+
+  /// Градиент PhoneLoginScreen & PinLoginScreen
+  static const LinearGradient authScreenBg = LinearGradient(
+    begin: Alignment.topCenter,
+    end: Alignment.bottomCenter,
+    colors: [
+      Color(0xFF0D1A44),
+      Color(0xFF091233),
+    ],
+  );
+
+  // --------------------------
+  // КНОПКИ
+  // --------------------------
+
+  /// Активная кнопка — бирюзово-зелёный градиент
+  static const LinearGradient activeButtonGradient = LinearGradient(
+    begin: Alignment.centerLeft,
+    end: Alignment.centerRight,
+    colors: [
+      Color(0xFF75FBF0),
+      Color(0xFF8BFFAA),
+    ],
+  );
+
+  /// Неактивная кнопка — тёмно-синий
+  static const Color disabledButtonColor = Color(0xFF2A3A6A);
+
+  /// Активный текст кнопки
+  static const Color activeButtonText = Color(0xFF000032);
+
+  /// Неактивный текст кнопки
+  static const Color disabledButtonText = Color(0x99FFFFFF);
+
+  // --------------------------
+  // ЦВЕТА ДЛЯ TOGGLE / CHECKBOX
+  // --------------------------
+
+  /// Бордер неактивного чекбокса
+  static const Color checkboxBorder = Colors.white70;
+
+  /// Бордер чекбокса с ошибкой
+  static const Color checkboxErrorBorder = Color(0xFFBA1A1A);
+
+  /// Цвет заливки активного чекбокса
+  static const Color checkboxFill = Color(0xFF8BFFAA);
+
+  // --------------------------
+  // PIN / CODE INPUT
+  // --------------------------
+
+  /// Цвет цифры в SMS-коде (PhoneLoginScreen)
+  static const Color smsDigit = Color(0xFF75FBF0);
+
+  /// Цвет точки-плейсхолдера
+  static const Color digitPlaceholder = Color(0x66FFFFFF);
+
+  /// Цвет правильного PIN
+  static const Color pinSuccess = Color(0xFF66FF99);
+
+  /// Цвет неверного PIN
+  static const Color pinError = Color(0xFFFF4F4F);
+
+  // --------------------------
+  // ТЕКСТ
+  // --------------------------
+
+  static const Color whiteText = Colors.white;
+  static const Color white70 = Colors.white70;
+  static const Color hint = Colors.white54;
+
+  // --------------------------
+  // ПРОЧЕЕ
+  // --------------------------
+
+  static const Color darkBlue = Color(0xFF000032);
+}

lib/core/failures.dart

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+sealed class EntityFailure {
+  final String? message;
+  const EntityFailure(this.message);
+}
+
+class AuthFailure extends EntityFailure {
+  final int attemptsLeft;
+  const AuthFailure(this.attemptsLeft, {String? message}) : super(message);
+}
+
+class AuthBlockFailure extends EntityFailure {
+  const AuthBlockFailure(super.message);
+}
+
+class WrongZoneFailure extends EntityFailure {
+  const WrongZoneFailure(super.message);
+}
+
+class ScooterNotFoundFailure extends EntityFailure {
+  const ScooterNotFoundFailure(super.message);
+}
+
+class RouteHistoryNotFoundFailure extends EntityFailure {
+  const RouteHistoryNotFoundFailure(super.message);
+}
+
+class UnknownFailure extends EntityFailure {
+  const UnknownFailure(super.message);
+}

lib/core/result.dart

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+import 'failures.dart';
+
+sealed class Result<T> {}
+
+class Success<T> extends Result<T> {
+  final T? data;
+  Success(this.data);
+}
+
+class Failure<T> extends Result<T> {
+  final EntityFailure failure;
+  Failure(this.failure);
+}