AFFiNE/libs/components/layout/src/workspace-sidebar/page-tree/tree-item/tree-item.module.scss

.Wrapper {
    box-sizing: border-box;
    padding-left: var(--spacing);
    list-style: none;
    padding-top: 6px;
    padding-bottom: 6px;
    font-size: 14px;
    &:hover {
        background: #f5f7f8;
        border-radius: 5px;
    }

    &.clone {
        display: inline-block;
        padding: 0;
        margin-left: 10px;
        margin-top: 5px;
        pointer-events: none;

        .TreeItem {
            padding-right: 20px;
            border-radius: 4px;
            box-shadow: 0px 15px 15px 0 rgba(34, 33, 81, 0.1);
        }
    }

    &.ghost {
        &.indicator {
            opacity: 1;
            position: relative;
            z-index: 1;
            margin-bottom: -1px;

            .TreeItem {
                position: relative;
                padding: 0;
                height: 8px;
                border-color: #2389ff;
                background-color: #56a1f8;

                &:before {
                    position: absolute;
                    left: -8px;
                    top: -4px;
                    display: block;
                    content: '';
                    width: 12px;
                    height: 12px;
                    border-radius: 50%;
                    border: 1px solid #2389ff;
                }

                > * {
                    /* Items are hidden using height and opacity to retain focus */
                    opacity: 0;
                    height: 0;
                }
            }
        }

        &:not(.indicator) {
            opacity: 0.5;
        }

        .TreeItem > * {
            box-shadow: none;
            background-color: transparent;
        }
    }
}

.TreeItem {
    box-sizing: border-box;
    display: flex;
    align-items: center;
    color: #4c6275;
}

.ItemContent {
    box-sizing: border-box;
    width: 100%;
    height: 32px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-around;
    color: #4c6275;
    padding-right: 0.5rem;
    overflow: hidden;

    .TreeItemMoreActions {
        visibility: hidden;
        cursor: pointer;
    }
    &:hover {
        .TreeItemMoreActions {
            visibility: visible;
            display: block;
        }
    }
}

.Text {
    flex-grow: 1;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    cursor: pointer;
    appearance: none;
    color: unset;
    text-decoration: none;
}

.Count {
    position: absolute;
    top: 8px;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: #2389ff;
    font-size: 0.9rem;
    font-weight: 500;
    color: #fff;
}

.disableInteraction {
    pointer-events: none;
}

.disableSelection,
.clone {
    width: 100%;
    .Text,
    .Count {
        user-select: none;
        -webkit-user-select: none;
    }
}

.Collapse {
    svg {
        transition: transform 250ms ease;
    }

    &.collapsed svg {
        transform: rotate(-90deg);
    }
}

.Action {
    display: flex;
    width: 12px;
    padding: 0 15px;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    touch-action: none;
    cursor: pointer;
    border-radius: 5px;
    border: none;
    outline: none;
    appearance: none;
    background-color: transparent;
    -webkit-tap-highlight-color: transparent;

    svg {
        flex: 0 0 auto;
        margin: auto;
        height: 100%;
        overflow: visible;
        fill: #919eab;
    }

    &:active {
        background-color: var(--background, rgba(0, 0, 0, 0.05));

        svg {
            fill: var(--fill, #788491);
        }
    }

    &:focus-visible {
        outline: none;
        box-shadow: 0 0 0 2px rgba(255, 255, 255, 0), 0 0px 0px 2px #4c9ffe;
    }
}