// .modal-open      - body class for killing the scroll
// .modal           - container to scroll within
// .modal-dialog    - positioning shell for the actual modal
// .modal-content   - actual modal w/ bg and corners and stuff

// Kill the scroll on the body
.modal-open {
    overflow: hidden;
}

// Container that the modal scrolls within
.modal {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: $zindex-modal;
    display: none;
    overflow: hidden;
    // Prevent Chrome on Windows from adding a focus outline. For details, see
    // https://github.com/twbs/bootstrap/pull/10951.
    outline: 0;
    // We deliberately don't use `-webkit-overflow-scrolling: touch;` due to a
    // gnarly iOS Safari bug: https://bugs.webkit.org/show_bug.cgi?id=158342
    // See also https://github.com/twbs/bootstrap/issues/17695

    .modal-open & {
        overflow-x: hidden;
        overflow-y: auto;
    }
}

// Shell div to position the modal with bottom padding
.modal-dialog {
    position: relative;
    width: auto;
    margin: $modal-dialog-margin;
    // allow clicks to pass through for custom click handling to close modal
    pointer-events: none;

    // When fading in the modal, animate it to slide down
    .modal.fade & {
        @include transition($modal-transition);
        transform: translate(0, -25%);
    }
    .modal.show & {
        transform: translate(0, 0);
    }
}

.modal-dialog-centered {
    display: flex;
    align-items: center;
    min-height: calc(100% - (#{$modal-dialog-margin} * 2));
}

// Actual modal
.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%; // Ensure `.modal-content` extends the full width of the parent `.modal-dialog`
    // counteract the pointer-events: none; in the .modal-dialog
    pointer-events: auto;
    background-color: $modal-content-bg;
    background-clip: padding-box;
    border: $modal-content-border-width solid $modal-content-border-color;
    box-shadow: $modal-content-box-shadow-xs;
    @include border-radius($modal-content-border-radius);
    // Remove focus outline from opened modal
    outline: 0;
}

// Modal background
.modal-backdrop {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: $zindex-modal-backdrop;
    background-color: $modal-backdrop-bg;

    // Fade for backdrop
    &.fade {
        opacity: 0;
    }
    &.show {
        opacity: $modal-backdrop-opacity;
    }
}

// Modal header
// Top section of the modal w/ title and dismiss
.modal-header {
    display: flex;
    align-items: flex-start; // so the close btn always stays on the upper right corner
    justify-content: space-between; // Put modal header elements (title and dismiss) on opposite ends
    padding: $modal-header-padding;
    border-bottom: $modal-header-border-width solid $modal-header-border-color;
    @include border-top-radius($modal-content-border-radius);
}

.close {
    padding: $modal-header-padding;
    top: 0;
    right: 0;
    z-index: 2;
    margin-left: auto;

    @include media-breakpoint-up('sm') {
        position: absolute;
    }
}

// Title text within header
.modal-title {
    margin-bottom: 0;
    line-height: $modal-title-line-height;
}

// Modal body
// Where all modal content resides (sibling of .modal-header and .modal-footer)
.modal-body {
    position: relative;
    // Enable `flex-grow: 1` so that the body take up as much space as possible
    // when should there be a fixed height on `.modal-dialog`.
    flex: 1 1 auto;
    padding: $modal-inner-padding-xs;

    @include media-breakpoint-up('sm') {
        padding: $modal-inner-padding;
    }
}

// Footer (for actions)
.modal-footer {
    display: flex;
    align-items: center; // vertically center
    justify-content: flex-end; // Right align buttons with flex property because text-align doesn't work on flex items
    padding: $modal-inner-padding;
    border-top: $modal-footer-border-width solid $modal-footer-border-color;

    // Easily place margin between footer elements
    > :not(:first-child) {
        margin-left: 0.25rem;
    }
    > :not(:last-child) {
        margin-right: 0.25rem;
    }
}

// Measure scrollbar width for padding body during modal show/hide
.modal-scrollbar-measure {
    position: absolute;
    top: -9999px;
    width: 50px;
    height: 50px;
    overflow: scroll;
}

// Scale up the modal
@include media-breakpoint-up(sm) {
    // Automatically set modal's width for larger viewports
    .modal-dialog {
        max-width: $modal-md;
        margin: $modal-dialog-margin-y-sm-up auto;
    }

    .modal-dialog-centered {
        min-height: calc(100% - (#{$modal-dialog-margin-y-sm-up} * 2));
    }

    .modal-content {
        @include box-shadow($modal-content-box-shadow-sm-up);
    }

    .modal-sm {
        max-width: $modal-sm;
    }
}

@include media-breakpoint-up(lg) {
    .modal-lg {
        max-width: $modal-lg;
    }
}