$courseindex-item-padding-y: .5rem;
$courseindex-item-padding-x: .75rem;

$courseindex-item-padding-y-sm: 4px;
$courseindex-item-padding-x-sm: 7px;

$courseindex-item-dragging-bg: theme-color-level('info', -11) !default;
$courseindex-item-dragging-border: theme-color-level('info', -9) !default;

// Dark mode.
$dm-courseindex-item-dragging-bg: theme-color-level('info', -11) !default;
$dm-courseindex-item-dragging-border: theme-color-level('info', -9) !default;

@mixin courseindex-item-hover() {
    @include hover-focus() {

        span,
        .courseindex-link,
        .courseindex-chevron {
            align-self: center;
            color: $drawer-link;
            cursor: pointer;

            .theme-dark & {
                color: $dm-drawer-link;
            }
        }

        &.dimmed {
            opacity: .6;
            color: $drawer-link;

            .theme-dark & {
                color: $dm-drawer-link;
            }

            .courseindex-link,
            .courseindex-chevron {
                color: $drawer-link;

                .theme-dark & {
                    color: $dm-drawer-link;
                }
            }
        }

        &.draggable {
            cursor: pointer;
        }
    }
}

@mixin courseindex-item-dragging() {
    &.dragging {
        border: $border-width solid $courseindex-item-dragging-border;
        background-color: $courseindex-item-dragging-bg;

        .theme-dark & {
            border: $border-width solid $dm-courseindex-item-dragging-border;
            background-color: $dm-courseindex-item-dragging-bg;
        }
    }
}

.drawer-course-index {
    @include media-breakpoint-up(lmd) {
        z-index: $zindex-fixed + 1;
    }

    @include media-breakpoint-down(md) {
        z-index: 9999;
    }
}

.drawer-course-index .drawercontent {
    padding: 0 0 70px 0;
    overflow-x: hidden;
}

.courseindex {

    .expanded-icon,
    .collapsed-icon {
        background-color: $gray-100;
        color: $gray-800;

        align-items: center;
        justify-content: center;

        width: 30px;
        height: 30px;
        border-radius: 30px;

        margin: 0 4px;

        &:hover {
            background-color: var(--primary-color-300);
        }

        .theme-dark & {
            background-color: $dm-gray-100;
            color: $dm-gray-800;
        }

        .icon {
            font-size: 12px;
            line-height: 20px;
            color: $gray-800;

            .theme-dark & {
                color: $dm-gray-800;
            }
        }
    }

    // Both activity and section items.
    .courseindex-item {
        padding: $courseindex-item-padding-y-sm 0;
        border: $border-width solid transparent;
        @include border-radius($border-radius);
        position: relative;

        align-items: center;

        &.courseindex-section-title {
            padding: 0;
        }

        .icon {
            font-size: 12px;
        }

        &.courseindex-section-title a {
            font-weight: $font-weight-bold;
            font-size: 14px;
            line-height: 1.5;
            color: $drawer-nav-btn-text;

            .theme-dark & {
                color: $dm-headings-color;
            }
        }

        .icons-collapse-expand {
            line-height: 1;
        }

        .courseindex-name,
        .courseindex-link {
            align-self: center;
            color: $drawer-nav-btn-text;
            font-size: .85rem;
            line-height: 1.3;
            display: block;
            //width: calc(100% - 60px);

            .theme-dark & {
                color: $dm-body-color-secondary;
            }
        }

        @include courseindex-item-hover();
        @include courseindex-item-dragging();

        &.active {
            background-color: $drawer-nav-btn-bg-hover;
            color: $drawer-nav-btn-text-hover;
        }

        // Hidden elements.
        &.dimmed {
            opacity: .6;

            .courseindex-link,
            .courseindex-chevron {
                opacity: .6;
            }
        }

        // Restrictions icon.
        .courseindex-locked {
            display: none;
        }

        &.restrictions {
            .courseindex-locked {
                display: inline-flex;

                .rui-icon {
                    background-color: $yellow-200;
                    width: 24px;
                    height: 24px;
                    border-radius: 24px;
                    display: flex;
                    justify-content: center;
                    align-items: center;
                }

                .icon {
                    padding: 4px;
                    width: 16px;
                    height: 16px;
                    font-size: 14px;
                }
            }
        }

        // Current page item.
        &.pageitem {
            &:before {
                content: '';
                position: absolute;
                top: calc(50% - 4px);
                left: -23px;
                z-index: 1;
                background-color: var(--primary-color-400);
                width: 8px;
                height: 8px;
                border-radius: 8px;
            }

            scroll-margin: 80px;

            a {
                align-self: center;
                font-weight: $font-weight-bold;
                color: $drawer-nav-btn-text;

                .theme-dark & {
                    color: $dm-dropdown-link-color;
                }
            }

            @include hover-focus() {
                color: $drawer-nav-btn-text;

                .courseindex-link,
                .courseindex-chevron {
                    color: $drawer-nav-btn-text;
                }
            }
        }

        // Completion.
        .completioninfo {
            line-height: 1;
            margin-left: 0;
            margin-right: 4px;
            min-width: 20px;

            color: $body-color-light;

            .theme-dark & {
                color: $dm-body-color-light;
            }

            &:empty {
                display: none;
            }

            &.completion_complete {
                color: #00665f;

                .theme-dark & {
                    color: #45ca7d;
                }
            }

            &.completion_fail {
                color: $danger;
            }
        }

        .completion_complete~.courseindex-link {
            color: #00665f;

            .theme-dark & {
                color: $dm-body-color-light;
            }
        }

        &.indented {
            padding: 4px 2px !important;
            margin-left: 20px;

            .courseindex-link {
                font-size: 12px;
                opacity: .8;
            }
        }
    }

    // The full section collapsable.
    .courseindex-section {
        border-radius: $btn-border-radius;
        margin-left: 4px;
        margin-right: 10px;
        margin-bottom: 5px;

        @include courseindex-item-dragging();

        .current-badge {
            font-size: 11px;
            font-weight: $font-weight-medium;
            line-height: $line-height-base;
            border-radius: $btn-border-radius - 3px;
            display: none;

            color: $yellow-800;
            background-color: $yellow-100;

            position: absolute;
            top: 0;
            right: -20px;

            padding: 3px;
            text-align: center;
            box-sizing: content-box;
        }

        &.current {
            position: relative;
            color: $drawer-nav-btn-text-hover;
            border-left: 3px solid var(--main-theme-color);

            .current-badge {
                display: inline-block;
            }
        }

        &.dropready .courseindex-item-content {
            /* Extra dropzone space */
            padding-bottom: 1em;
        }

        .courseindex-sectioncontent {
            .courseindex-item {
                padding-left: 0;
            }
        }
    }

    .courseindex-sectioncontent {
        padding: 3px 3px 20px 38px;
    }

    // Element visible only on editing mode.
    .d-flex-noedit {
        display: none;
    }

    &.editing {
        .d-flex-noedit {
            display: flex;
        }
    }

    // Placeholders.
    .media-list {
        .placeholder-circle {
            height: 20px;
            width: 20px;
            border-radius: $btn-border-radius;
        }

        .placeholder-rec {
            width: 50%;
            height: 20px;
            border-radius: $btn-border-radius;
            margin: 0.5rem 0;
        }
    }
}

.drawerheadercontent {
    position: absolute;

    @include media-breakpoint-up(lmd) {
        right: 20px;
        top: 30px;
    }

    @include media-breakpoint-between(xs, md) {
        right: 10px;
        top: 10px;
    }
}