优化

client/flutter/lib/widgets/custom_button.dart

@@ -0,0 +1,65 @@
+import 'package:flutter/material.dart';
+import 'package:sales_chat/theme/app_theme.dart';
+
+class CustomButton extends StatelessWidget {
+  final String text;
+  final VoidCallback? onPressed;
+  final bool isLoading;
+  final bool isOutlined;
+  final IconData? icon;
+  final Color? color;
+
+  const CustomButton({
+    super.key,
+    required this.text,
+    this.onPressed,
+    this.isLoading = false,
+    this.isOutlined = false,
+    this.icon,
+    this.color,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final buttonColor = color ?? AppTheme.primaryColor;
+
+    if (isOutlined) {
+      return OutlinedButton.icon(
+        onPressed: isLoading ? null : onPressed,
+        icon: isLoading
+            ? const SizedBox(
+                width: 16,
+                height: 16,
+                child: CircularProgressIndicator(strokeWidth: 2),
+              )
+            : (icon != null ? Icon(icon, size: 18) : const SizedBox.shrink()),
+        label: Text(text),
+        style: OutlinedButton.styleFrom(
+          foregroundColor: buttonColor,
+          side: BorderSide(color: buttonColor),
+          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
+        ),
+      );
+    }
+
+    return ElevatedButton.icon(
+      onPressed: isLoading ? null : onPressed,
+      icon: isLoading
+          ? const SizedBox(
+              width: 16,
+              height: 16,
+              child: CircularProgressIndicator(
+                strokeWidth: 2,
+                valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
+              ),
+            )
+          : (icon != null ? Icon(icon, size: 18) : const SizedBox.shrink()),
+      label: Text(text),
+      style: ElevatedButton.styleFrom(
+        backgroundColor: buttonColor,
+        foregroundColor: Colors.white,
+        padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
+      ),
+    );
+  }
+}