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fix: flush state for accordion component #15993

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125 changes: 101 additions & 24 deletions packages/styles/scss/components/accordion/_accordion.scss
Original file line number Diff line number Diff line change
Expand Up @@ -59,12 +59,27 @@ $content-padding: 0 0 0 $spacing-05 !default;
display: list-item;
overflow: visible;
border-block-start: 1px solid $border-subtle;
transition: border-color motion(standard, productive) $duration-fast-02;

&:last-child {
border-block-end: 1px solid $border-subtle;
}
}

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.#{$prefix}--accordion__item:not(.#{$prefix}--accordion__item--active) {
// Blend border on hover
&:hover,
// Blend top border of the next component on hover
&:hover + .#{$prefix}--accordion__item {
border-block-start-color: $layer-hover;
}

// Blend bottom border of last item on hover
&:last-child:hover {
border-block-end-color: $layer-hover;
}
}

.#{$prefix}--accordion__heading {
@include button-reset.reset;

Expand All @@ -83,11 +98,15 @@ $content-padding: 0 0 0 $spacing-05 !default;

&:hover {
background-color: $layer-hover;
outline: none;
}

&:focus {
box-shadow: /* Border top */ 0 -1px 0 0 $focus, inset 0 1px 0 0 $focus,
/* Border right */ inset 2px 0 0 0 $focus,
position: relative;
z-index: 2;
box-shadow:
/* Border top */ 0 -1px 0 0 $focus,
inset 0 1px 0 0 $focus, /* Border right */ inset 2px 0 0 0 $focus,
/* Border bottom */ 0 1px 0 0 $focus, inset 0 -1px 0 0 $focus,
/* Border left */ inset -2px 0 0 0 $focus;
outline: none;
Expand Down Expand Up @@ -213,6 +232,79 @@ $content-padding: 0 0 0 $spacing-05 !default;
}
}

// flush
.#{$prefix}--accordion--flush .#{$prefix}--accordion__item {
position: relative;
border-color: transparent;

&:last-child,
&:hover,
&:last-child:hover,
&:hover + .#{$prefix}--accordion__item {
border-color: transparent;
}

&::before,
&::after {
position: absolute;
display: block;
block-size: 1px;
content: '';
inline-size: calc(100% - $spacing-05 - $spacing-05);
margin-inline-start: $spacing-05;
transition: background motion(standard, productive) $duration-fast-02;

@media screen and (prefers-reduced-motion: reduce) {
transition: none;
}
}

&::before {
background: $border-subtle;
inset-block-start: -1px;
}

&:last-child::after {
background: $border-subtle;
inset-block-end: -1px;
}
}

.#{$prefix}--accordion--flush .#{$prefix}--accordion__heading:hover {
position: relative;
z-index: 1;

// blend top/bottom border into heading hover state
&::before,
&::after {
position: absolute;
display: block;
background: $layer-hover;
block-size: 1px;
content: '';
inline-size: 100%;
inset-inline-start: 0;
transition: background motion(standard, productive) $duration-fast-02;

@media screen and (prefers-reduced-motion: reduce) {
transition: none;
}
}

&::before {
inset-block-start: -1px;
}

&::after {
inset-block-end: -1px;
}

&:focus::after,
&:focus::before {
background: none;
}
}

// Skeleton state
.#{$prefix}--accordion.#{$prefix}--skeleton .#{$prefix}--accordion__heading,
.#{$prefix}--accordion.#{$prefix}--skeleton .#{$prefix}--accordion__button {
Expand All @@ -234,7 +326,9 @@ $content-padding: 0 0 0 $spacing-05 !default;
}

.#{$prefix}--accordion.#{$prefix}--skeleton
.#{$prefix}--accordion__heading:hover::before {
.#{$prefix}--accordion__heading:hover::before,
.#{$prefix}--accordion.#{$prefix}--skeleton
.#{$prefix}--accordion__heading:hover {
background-color: transparent;
}

Expand All @@ -255,6 +349,10 @@ $content-padding: 0 0 0 $spacing-05 !default;
margin-block-end: 0;
}

.#{$prefix}--accordion.#{$prefix}--skeleton .#{$prefix}--accordion__title {
margin-inline-start: $spacing-05;
}

// Windows HCM fix
.#{$prefix}--accordion__arrow,
.#{$prefix}--accordion__item--active .#{$prefix}--accordion__arrow {
Expand Down Expand Up @@ -284,24 +382,3 @@ $content-padding: 0 0 0 $spacing-05 !default;
opacity: 0;
visibility: hidden;
}

// flush
.#{$prefix}--accordion--flush .#{$prefix}--accordion__title {
margin-inline-start: 0;
}

.#{$prefix}--accordion--flush .#{$prefix}--accordion__arrow {
margin-inline-end: 0;
}

.#{$prefix}--accordion--flush .#{$prefix}--accordion__content {
padding-inline-start: 0;
}

.#{$prefix}--accordion--flush:not(.#{$prefix}--skeleton)
.#{$prefix}--accordion__heading:hover::before,
.#{$prefix}--accordion--flush:not(.#{$prefix}--skeleton)
.#{$prefix}--accordion__heading:focus::before {
inline-size: calc(100% + 32px);
inset-inline-start: -1rem;
}
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