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/* ButtonGroup component — groups multiple buttons with shared borders */
.mui-button-group {
display: inline-flex;
gap: 0;
}
/* Horizontal orientation (default) */
.mui-button-group--horizontal {
flex-direction: row;
}
.mui-button-group--horizontal > .mui-btn {
border-radius: 0;
margin-inline-start: -1px;
position: relative;
}
.mui-button-group--horizontal > .mui-btn:first-child {
border-radius: var(--mui-radius-md) 0 0 var(--mui-radius-md);
margin-inline-start: 0;
}
.mui-button-group--horizontal > .mui-btn:last-child {
border-radius: 0 var(--mui-radius-md) var(--mui-radius-md) 0;
}
/* Vertical orientation */
.mui-button-group--vertical {
flex-direction: column;
}
.mui-button-group--vertical > .mui-btn {
border-radius: 0;
margin-top: -1px;
position: relative;
}
.mui-button-group--vertical > .mui-btn:first-child {
border-radius: var(--mui-radius-md) var(--mui-radius-md) 0 0;
margin-top: 0;
}
.mui-button-group--vertical > .mui-btn:last-child {
border-radius: 0 0 var(--mui-radius-md) var(--mui-radius-md);
}
/* Hover and focus state: raise z-index so border shows */
.mui-button-group > .mui-btn:hover {
z-index: 1;
}
.mui-button-group > .mui-btn:focus-visible {
z-index: 2;
outline: 2px solid var(--mui-border-focus);
outline-offset: -2px;
}
/* Active button in group (e.g., selected state) */
.mui-button-group > .mui-btn[aria-pressed="true"],
.mui-button-group > .mui-btn.is-active {
z-index: 1;
background: var(--mui-accent);
color: var(--mui-accent-fg);
border-color: var(--mui-accent);
}
/* Only child: restore full radius */
.mui-button-group--horizontal > .mui-btn:only-child {
border-radius: var(--mui-radius-md);
}
.mui-button-group--vertical > .mui-btn:only-child {
border-radius: var(--mui-radius-md);
}
/* Separator cell — visual rule between buttons.
* aria-orientation describes the separator's OWN axis. In a horizontal
* group (buttons in a row) the separator runs VERTICALLY between them. */
.mui-button-group__separator[aria-orientation="vertical"] {
width: 1px;
align-self: stretch;
background: var(--mui-border);
}
.mui-button-group__separator[aria-orientation="horizontal"] {
height: 1px;
align-self: stretch;
background: var(--mui-border);
}
/* Text cell — non-interactive label sharing the group's baseline. */
.mui-button-group__text {
display: inline-flex;
align-items: center;
padding: 0 0.75rem;
color: var(--mui-text-muted);
font-size: 0.875rem;
}
/* Neighbor buttons in horizontal group should not collapse their border
* into the separator — drop the -1px overlap when a separator sits between. */
.mui-button-group--horizontal > .mui-button-group__separator + .mui-btn,
.mui-button-group--horizontal > .mui-button-group__text + .mui-btn {
margin-inline-start: 0;
}
.mui-button-group--vertical > .mui-button-group__separator + .mui-btn,
.mui-button-group--vertical > .mui-button-group__text + .mui-btn {
margin-top: 0;
}