tt: remove shadow from breaks

firka/lib/helpers/ui/firka_card.dart

@@ -8,12 +8,14 @@ class FirkaCard extends StatelessWidget {
   final List<Widget> left;
   final List<Widget>? center;
   final List<Widget>? right;
+  final bool shadow;
   final Widget? extra;
   final Attach? attached;
   final Color? color;
 
   const FirkaCard(
       {required this.left,
+      this.shadow = true,
       this.center,
       this.right,
       this.extra,
@@ -34,6 +36,7 @@ class FirkaCard extends StatelessWidget {
         width: MediaQuery.of(context).size.width,
         child: Card(
           color: color ?? appStyle.colors.card,
+          shadowColor: shadow ? null : Colors.transparent,
           shape: RoundedRectangleBorder(
             borderRadius: BorderRadius.only(
                 topLeft: Radius.circular(attached == Attach.top
@@ -72,6 +75,7 @@ class FirkaCard extends StatelessWidget {
         width: MediaQuery.of(context).size.width,
         child: Card(
           color: color ?? appStyle.colors.card,
+          shadowColor: shadow ? null : Colors.transparent,
           shape: RoundedRectangleBorder(
             borderRadius: BorderRadius.only(
                 topLeft: Radius.circular(attached == Attach.top

firka/lib/ui/phone/widgets/lesson.dart

@@ -164,6 +164,7 @@ class LessonWidget extends StatelessWidget {
             final preBreak = emptyClass.start.difference(lesson.end).inMinutes;
             final postBreak = breakEnd.difference(emptyClass.end).inMinutes;
             elements.add(FirkaCard(
+              shadow: false,
               left: [
                 Text(data.l10n.breakTxt,
                     style: appStyle.fonts.B_14SB
@@ -212,6 +213,7 @@ class LessonWidget extends StatelessWidget {
               ],
             ));
             elements.add(FirkaCard(
+              shadow: false,
               left: [
                 Text(data.l10n.breakTxt,
                     style: appStyle.fonts.B_14SB
@@ -226,6 +228,7 @@ class LessonWidget extends StatelessWidget {
             ));
           } else {
             elements.add(FirkaCard(
+              shadow: false,
               left: [
                 Text(data.l10n.breakTxt,
                     style: appStyle.fonts.B_14SB
@@ -241,6 +244,7 @@ class LessonWidget extends StatelessWidget {
           }
         } else {
           elements.add(FirkaCard(
+            shadow: false,
             left: [
               Text(data.l10n.breakTxt,
                   style: appStyle.fonts.B_14SB