// Make the div behave like a button
.button-group,
.button-group--vertical {
    position: relative;
    //display: inline-block;
    display: flex;
    flex-direction: row;
    vertical-align: middle; // match .button alignment given font-size hack above

    > .button {
        position: relative;
        float: left;
        flex: 1;

        // Bring the "active" button to the front
        &:focus,
        &:active,
        &.active {
            z-index: 2;
        }

        @include hover {
            z-index: 2;
        }
    }
}

// Prevent double borders when buttons are next to each other
.button-group {
    .button + .button,
    .button + .button-group,
    .button-group + .button,
    .button-group + .button-group {
        margin-left: -1px;
    }
}

// Optional: Group multiple button groups together for a toolbar
.button-toolbar {
    margin-left: -5px; // Offset the first child's margin
    @include clearfix();

    .button-group,
    .input-group {
        float: left;
    }

    > .button,
    > .button-group,
    > .input-group {
        margin-left: 5px;
    }
}

.button-group > .button:not(:first-child):not(:last-child):not(.dropdown-toggle) {
    border-radius: 0;
}

// Set corners individual because sometimes a single button can be in a .button-group and we need :first-child and :last-child to both match
.button-group > .button:first-child {
    margin-left: 0;

    &:not(:last-child):not(.dropdown-toggle) {
        @include border-right-radius(0);
    }
}

// Need .dropdown-toggle since :last-child doesn't apply given a .dropdown-menu immediately after it
.button-group > .button:last-child:not(:first-child),
.button-group > .dropdown-toggle:not(:first-child) {
    @include border-left-radius(0);
}

// Custom edits for including button-groups within button-groups (useful for including dropdown buttons within a button-group)
.button-group > .button-group {
    float: left;
}

.button-group > .button-group:not(:first-child):not(:last-child) > .button {
    border-radius: 0;
}

.button-group > .button-group:first-child:not(:last-child) {
    > .button:last-child,
    > .dropdown-toggle {
        @include border-right-radius(0);
    }
}

.button-group > .button-group:last-child:not(:first-child) > .button:first-child {
    @include border-left-radius(0);
}

// On active and open, don't show outline
.button-group .dropdown-toggle:active,
.button-group.open .dropdown-toggle {
    outline: 0;
}


// Sizing
//
// Remix the default button sizing classes into new ones for easier manipulation.

.button-group--sm > .button { @extend .button--sm; }
.button-group--lg > .button { @extend .button--lg; }


//
// Split button dropdowns
//

// Give the line between buttons some depth
.button-group > .button + .dropdown-toggle {
    padding-right: 8px;
    padding-left: 8px;
}

.button-group > .button-lg + .dropdown-toggle {
    padding-right: 12px;
    padding-left: 12px;
}

// The clickable button for toggling the menu
// Remove the gradient and set the same inset shadow as the :active state
.button-group.open .dropdown-toggle {
    @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));

    // Show no shadow for `.button-link` since it has no other button styles.
    &.button-link {
        @include box-shadow(none);
    }
}


// Reposition the caret
.button .caret {
    margin-left: 0;
}

// Carets in other button sizes
.button--lg .caret {
    border-width: $caret-width-lg $caret-width-lg 0;
    border-bottom-width: 0;
}

// Upside down carets for .dropup
.dropup .button--lg .caret {
    border-width: 0 $caret-width-lg $caret-width-lg;
}



//
// Vertical button groups
//

.button-group--vertical {
    > .button,
    > .button-group,
    > .button-group > .button {
        display: block;
        float: none;
        width: 100%;
        max-width: 100%;
    }

    // Clear floats so dropdown menus can be properly placed
    > .button-group {
        @include clearfix();

        > .button {
            float: none;
        }
    }

    > .button + .button,
    > .button + .button-group,
    > .button-group + .button,
    > .button-group + .button-group {
        margin-top: -1px;
        margin-left: 0;
    }
}

.button-group--vertical > .button {
    &:not(:first-child):not(:last-child) {
        border-radius: 0;
    }

    &:first-child:not(:last-child) {
        border-top-right-radius: $button-border-radius;
        @include border-bottom-radius(0);
    }

    &:last-child:not(:first-child) {
        border-bottom-left-radius: $button-border-radius;
        @include border-top-radius(0);
    }
}

.button-group--vertical > .button-group:not(:first-child):not(:last-child) > .button {
    border-radius: 0;
}

.button-group--vertical > .button-group:first-child:not(:last-child) {
    > .button:last-child,
    > .dropdown-toggle {
        @include border-bottom-radius(0);
    }
}

.button-group--vertical > .button-group:last-child:not(:first-child) > .button:first-child {
    @include border-top-radius(0);
}


// Checkbox and radio options
//
// In order to support the browser's form validation feedback, powered by the
// `required` attribute, we have to "hide" the inputs via `clip`. We cannot use
// `display: none;` or `visibility: hidden;` as that also hides the popover.
// Simply visually hiding the inputs via `opacity` would leave them clickable in
// certain cases which is prevented by using `clip` and `pointer-events`.
// This way, we ensure a DOM element is visible to position the popover from.
//
// See https://github.com/twbs/bootstrap/pull/12794 and
// https://github.com/twbs/bootstrap/pull/14559 for more information.

[data-toggle="buttons"] {
    > .button,
    > .button-group > .button {
        input[type="radio"],
        input[type="checkbox"] {
            position: absolute;
            clip: rect(0,0,0,0);
            pointer-events: none;
        }
    }
}