feat(flutter): 修复登录输入并升级登录页

lib/pages/auth/auth_widgets.dart

@@ -76,10 +76,7 @@ class _AuthCard extends StatelessWidget {
       decoration: BoxDecoration(
         color: AppColors.card,
         borderRadius: BorderRadius.circular(_cardRadius),
-        border: Border.all(
-          color: AppColors.outlineVariantDark,
-          width: _cardBorderWidth,
-        ),
+        boxShadow: const [AppTheme.cardShadow],
       ),
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.stretch,
@@ -94,7 +91,7 @@ class _AuthCard extends StatelessWidget {
           Text(
             status.signUpMode ? l10n.authSignUpTitle : l10n.authSignInTitle,
             style: const TextStyle(
-              color: AppColors.onPrimary,
+              color: AppColors.onSurface,
               fontSize: 25,
               fontWeight: FontWeight.w800,
               height: 1.2,
@@ -149,12 +146,11 @@ class _AuthModeSwitch extends StatelessWidget {
         shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(22)),
       ),
       child: Container(
-        height: _minTapTarget,
-        padding: const EdgeInsets.all(3),
+        height: 36,
+        padding: const EdgeInsets.all(2),
         decoration: BoxDecoration(
-          color: AppColors.bar,
-          borderRadius: BorderRadius.circular(22),
-          border: Border.all(color: AppColors.outlineVariantDark),
+          color: AppColors.raised,
+          borderRadius: BorderRadius.circular(18),
         ),
         child: Row(
           children: [