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lib/theme/custom_colors.dart

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+import 'package:flutter/material.dart';
+
+///扩展颜色
+extension CustomColors on ColorScheme {
+  Color get success => const Color(0xff57be80);
+
+  Color get warning => const Color(0xffff9800);
+
+  Color get info => const Color(0xff909399);
+
+  Color get danger => const Color(0xfff44545);
+
+  Color get primaryEnd => const Color(0xff06b6d4);
+}

lib/theme/decorations/app_shadows.dart

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+
+import 'package:flutter/material.dart';
+
+///阴影卡片
+final shadowDecoration = BoxDecoration(
+  border: Border.all(color: Colors.black, width: 2),
+  borderRadius: BorderRadius.circular(5),
+  color: Colors.white,
+  boxShadow: const [
+    BoxShadow(
+      color: Color(0xffb5b5b5),
+      blurRadius: 2,
+      offset: Offset(6, 6),
+      spreadRadius: 0,
+      blurStyle: BlurStyle.normal,
+    ),
+  ],
+);

lib/theme/theme.dart

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+import 'package:flutter/material.dart';
+
+///颜色
+final scheme = ColorScheme.fromSeed(
+  primary: Color(0xff3784f1),
+  seedColor: Color(0xff3885f2),
+  brightness: Brightness.light,
+  //卡片色
+  surface: Colors.white,
+  surfaceContainerLow: Color(0xFFF4F8FB),
+  surfaceContainer: Color(0xFFE9ECF3),
+  surfaceContainerHigh: Color(0xffbababa),
+  //颜色
+  onSurfaceVariant: Color(0xFFBEBEBE),
+
+  shadow: Color.fromRGBO(0, 0, 0, 0.1),
+);
+
+///字体
+final textTheme = TextTheme(
+  titleLarge: TextStyle(
+    fontSize: 24,
+    fontWeight: FontWeight.w700,
+    color: scheme.onSurface,
+    letterSpacing: 0.5,
+  ),
+  titleMedium: TextStyle(
+    fontSize: 20,
+    fontWeight: FontWeight.w700,
+    color: scheme.onSurface,
+    letterSpacing: 0.5,
+  ),
+  titleSmall: TextStyle(
+    fontSize: 16,
+    fontWeight: FontWeight.w700,
+    color: scheme.onSurface,
+    letterSpacing: 0.5,
+  ),
+  bodyLarge: TextStyle(fontSize: 18, letterSpacing: 0.5),
+  bodyMedium: TextStyle(
+    fontSize: 16,
+    letterSpacing: 0.5,
+    color: scheme.onSurface,
+  ),
+  bodySmall: TextStyle(fontSize: 14, letterSpacing: 0.5),
+  labelLarge: TextStyle(fontSize: 16, color: scheme.onSurfaceVariant, letterSpacing: 0.5),
+  labelMedium: TextStyle(fontSize: 14, color: scheme.onSurfaceVariant, letterSpacing: 0.5),
+  labelSmall: TextStyle(fontSize: 12, color: scheme.onSurfaceVariant, letterSpacing: 0.5),
+);