.c-sidebar-left {
    .w(@aside-left - 40px);
    box-sizing: border-box;
    padding: 10px;
    .pf;
    .z(300);
    left: 0;
    top: @header-height + @bread-height;
    bottom: 0;
    background-color: @bg-light;
    border-right: 1px solid #eee;
}

.c-sidebar-left.without-bread {
    top: @header-height;
}

.c-sidebar-left-inner {
    .size(100%);
    overflow-y: auto;

    &::-webkit-scrollbar {
        width: 4px;
    }

    &::-webkit-scrollbar-track,
    &::-webkit-scrollbar-track-piece {
        background-color: #fafafa;
        border-radius: 6px;
    }

    &::-webkit-scrollbar-thumb {
        background-color: #eee;
        border-radius: 6px;
    }

    &::-webkit-scrollbar-button,
    &::-webkit-scrollbar-corner,
    &::-webkit-resizer {
        display: none;
    }
}

// 笔记本<1440 缩小双边栏
@media screen and (max-width: @smallpc) {
    .c-sidebar-left {
        .w(@aside-left - 40px);
    }
}

// 平板横屏
@media screen and (max-width: @notebook) {
    .c-sidebar-left {
        .w(@aside-left - 60px);
    }
}

@media screen and (max-width: @phone) {
    .c-sidebar-left-inner {
        overflow-y: auto;
    }
}

// 折叠相关逻辑
.c-sidebar-left-toggle {
    display: block;
    .pa;
    .rb(-21px, calc(50% - 20px));
    width: 20px;
    height: 40px;
    line-height: 40px;
    .pointer;
    text-align: center;
    background-color: @bg-light;
    border-right: 1px solid #eee;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    border-radius: 0px 2px 2px 0px;
    font-size: 16px;
    color: #999;

    &:hover {
        color: #222;
    }

    &.close-sidebar-left {
        right: 0;
    }

    svg {
        fill: @color;
    }
}

.closeLeftSidebar() {
    transition: 0.2s ease-in-out;
    transform: translateX(-100%);
}

.openLeftSidebar() {
    transition: 0.2s ease-in-out;
    transform: translateX(0);
}

.c-sidebar-left.isclose {
    .closeLeftSidebar();

    .c-sidebar-left-toggle {
        transition: 0.2s ease-in-out;
        transform: translateX(100%);
    }
}

.c-sidebar-left.isopen {
    .openLeftSidebar();

    .c-sidebar-left-toggle {
        transition: 0.2s ease-in-out;
        transform: translateX(0);
    }
}

@media screen and (max-width: @ipad) {
    .c-sidebar-left-toggle {
        .none;
    }

    .c-sidebar-left.isopen {
        box-shadow: 2px 0 3px rgba(0, 0, 0, 0.1);
    }
}

@media print {
    .c-sidebar-left {
        .none;
    }
}