System Design Data Structures Classes Emotion Entry Frontend Common Theme Assets Components AddButtonComponent ArrowLeftComponent ArrowRightComponent CalendarComponent DateComponent FileInputComponent ListElementComponent MoodInputComponent NotesInputComponent PinWheelComponent SubmitButtonComponent SettingsMenuComponent SliderPickerComponent ChangeThemeComponent ChangeColorMappingComponent ChangeGradientComponent Views CalendarView HomeView InputView NotesView WelcomeView SettingsView ChangeColorMappingView Backend Server GET Request POST Request PUT Request