public ICollection <IRule> CreateGlobalCss(ITheme theme)
{
var choiceGroupOptionRules = new HashSet <IRule>();
#region Root
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField").AppendCssStyles(
$"font-size:{theme.FontStyle.FontSize.Medium}",
$"font-weight:{theme.FontStyle.FontWeight.Regular}",
"display:flex",
"align-items:center",
"box-sizing:border-box",
$"color:{theme.SemanticTextColors.BodyText}",
"min-height:26px",
"border:none",
"position:relative",
"margin-top:8px");
#endregion
#region Label
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceFieldLabel").AppendCssStyles(
$"color: {theme.Palette.NeutralDark}",
"display:inline-block");
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField:not(.custom-content) .ms-ChoiceFieldLabel").AppendCssStyles(
"padding-left:26px");
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField.custom-content").AppendCssStyles(
"display:inline-flex",
"font-size:0",
"margin:0 4px 4px 0",
"padding-left:0",
$"background-color:{theme.Palette.NeutralLighter}",
"height:100%");
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceFieldLabel:before").AppendCssStyles(
$"color: {theme.SemanticColors.InputBorderHovered}",
$"border-color: {theme.SemanticColors.InputBorderHovered}");
choiceGroupOptionRules.AddCssStringSelector(".is-checked .ms-ChoiceFieldLabel:before").AppendCssStyles(
$"color: {theme.Palette.ThemeDark}",
$"border-color: {theme.Palette.ThemeDark}");
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField:not(.is-checked):not(.custom-content) .ms-ChoiceFieldLabel:after").AppendCssStyles(
"content:''",
"transition-property:background-color",
"left:5px",
"top:5px",
"width:10px",
"height:10px",
$"background-color:{theme.Palette.NeutralSecondary}");
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField.is-checked .ms-ChoiceFieldLabel:after").AppendCssStyles(
$"border-color: {theme.Palette.ThemeDark}");
#endregion
#region ChoiceFieldWrapper
// TODO: flesh this out
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField-wrapper:focus").AppendCssStyles(
"");
#endregion
#region Input
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField-input").AppendCssStyles(
"position:absolute",
"opacity:0",
"top:0px",
"right:0px",
"width:100%",
"height:100%",
"margin:0");
#endregion
#region Field
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField-field").AppendCssStyles(
"display:inline-block",
"cursor:pointer",
"margin-top:0",
"position:relative",
"vertical-align:top",
"user-select:none",
"min-height:20px");
this.AddFieldHoverOrFocusStyles(choiceGroupOptionRules, theme, "hover");
this.AddFieldHoverOrFocusStyles(choiceGroupOptionRules, theme, "focus");
choiceGroupOptionRules.AddCssStringSelector(".custom-content .ms-ChoiceField-field").AppendCssStyles(
"box-sizing:content-box",
"cursor:pointer",
"padding-top:22px",
"margin:0",
"text-align:center",
"transition-property:all",
$"transition-duration:{_transitionDuration}",
$"transition-timing-function:ease",
"border: 1px solid transparent",
"justify-content:center",
"align-items:center",
"display:flex",
"flex-direction:column");
choiceGroupOptionRules.AddCssStringSelector(".is-checked.custom-content .ms-ChoiceField-field").AppendCssStyles(
$"border-color:{theme.SemanticColors.InputBackgroundChecked}");
this.AddFieldWithCustomContentRules(choiceGroupOptionRules, theme, "hover");
this.AddFieldWithCustomContentRules(choiceGroupOptionRules, theme, "focus");
choiceGroupOptionRules.AddCssStringSelector(".is-disabled .ms-ChoiceField-field").AppendCssStyles(
"cursor:default");
choiceGroupOptionRules.AddCssStringSelector(".is-disabled .ms-ChoiceFieldLabel").AppendCssStyles(
$"color:{theme.SemanticTextColors.DisabledBodyText}");
choiceGroupOptionRules.AddCssClassSelector($".is-disabled {CommonStyles.HighContrastSelector}").AppendCssStyles(
"color:GrayText");
choiceGroupOptionRules.AddCssClassSelector($".is-checked .is-disabled .ms-ChoiceField").AppendCssStyles(
$"border-color:{theme.Palette.NeutralLighter}");
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField-labelWrapper").AppendCssStyles(
$"font-size:{theme.FontStyle.FontSize.Medium}",
$"font-weight:{theme.FontStyle.FontWeight.Regular}");
#endregion
#region OuterCircle
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField-field:before").AppendCssStyles(
"content:''",
"display:inline-block",
$"background-color:{theme.SemanticColors.BodyBackground}",
"border-width:1px",
"border-style:solid",
$"border-color:{theme.Palette.NeutralPrimary}",
$"width:{_choiceFieldSize}px",
$"height:{_choiceFieldSize}px",
"font-weight:normal",
"position:absolute",
"top:0",
"left:0",
"box-sizing:border-box",
"transition-property:border-color",
$"transition-duration:{_transitionDuration}",
$"transition-timing-function:{_transitionTimingFunction}",
"border-radius:50%");
choiceGroupOptionRules.AddCssStringSelector(".is-disabled .ms-ChoiceField-field:before").AppendCssStyles(
$"border-color:{theme.SemanticTextColors.DisabledBodySubtext}");
choiceGroupOptionRules.AddCssStringSelector($".is-disabled {CommonStyles.HighContrastSelector} .ms-ChoiceField-field:before").AppendCssStyles(
"color:GrayText");
choiceGroupOptionRules.AddCssStringSelector(".is-checked .ms-ChoiceField-field:before").AppendCssStyles(
$"border-color:{theme.SemanticColors.InputBackgroundChecked}");
choiceGroupOptionRules.AddCssStringSelector(".custom-content .ms-ChoiceField-field:before").AppendCssStyles(
$"top:{_radioButtonSpacing}px",
$"right:{_radioButtonSpacing}px",
"left:auto",
"opacity:0");
choiceGroupOptionRules.AddCssStringSelector(".is-checked.custom-content .ms-ChoiceField-field:before").AppendCssStyles(
"opacity:1");
#endregion
#region SelectionCircle
choiceGroupOptionRules.AddCssStringSelector(".ms-ChoiceField-field:after").AppendCssStyles(
"content:''",
"width:0",
"height:0",
"border-radius:50%",
"position: absolute",
$"left:{_choiceFieldSize / 2}px",
"right:0",
"transition-property:border-width",
$"transition-duration:{_transitionDuration}",
$"transition-timing-function:{_transitionTimingFunction}",
"box-sizing:border-box");
choiceGroupOptionRules.AddCssStringSelector(".is-checked .ms-ChoiceField-field:after").AppendCssStyles(
"border-width:5px",
"border-style:solid",
$"border-color:{theme.SemanticColors.InputBackgroundChecked}",
"left:5px",
"top:5px",
"width:10px",
"height:10px");
choiceGroupOptionRules.AddCssStringSelector(".is-checked.custom-content .ms-ChoiceField-field:after").AppendCssStyles(
$"top:{_radioButtonSpacing + _radioButtonInnerSize}px",
$"right:{_radioButtonSpacing + _radioButtonInnerSize}px",
"left:auto");
#endregion
#region Inner Field
choiceGroupOptionRules.AddCssStringSelector(".custom-content .ms-ChoiceField-innerField").AppendCssStyles(
"position:relative",
"display:inline-block",
"padding-left:30px",
"padding-right:30px");
choiceGroupOptionRules.AddCssStringSelector(".is-disabled.custom-content .ms-ChoiceField-innerField").AppendCssStyles(
"opacity:0.25");
choiceGroupOptionRules.AddCssStringSelector($".is-disabled.custom-content {CommonStyles.HighContrastSelector} .ms-ChoiceField-innerField").AppendCssStyles(
"opacity:0.25");
#endregion
#region ImageWrapper
this.AddCustomContentWrapperStyle(choiceGroupOptionRules, theme);
#endregion
#region LabelWrapper
choiceGroupOptionRules.AddCssStringSelector($".custom-content .ms-ChoiceField-labelWrapper").AppendCssStyles(
$"font-size:{theme.FontStyle.FontSize.Medium}",
$"font-weight:{theme.FontStyle.FontWeight.Regular}",
"display:flex",
"position:relative",
"margin:4px 8px 2px 8px",
$"height:{_labelWrapperHeight}px",
$"line-height:{_labelWrapperLineHeight}px",
"overflow:hidden",
"white-space:pre-wrap");
#endregion
return(choiceGroupOptionRules);
}