atlas-seller-kit/apps/web/src/layouts/SidebarMenu.css

.sidebar-menu-container {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.sidebar-menu {
    background: transparent !important;
    border: none;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-menu .ant-menu-item {
    margin: 0 !important;
    padding: 12px 20px !important;
    height: auto !important;
    line-height: 1.5 !important;
    transition: all 0.3s !important;
    font-size: 15px !important;
    font-weight: 600 !important;
}

.sidebar-menu .ant-menu-item .ant-menu-title-content {
    font-size: 15px !important;
    font-weight: 600 !important;
    /* antd 默认只过渡 color，会覆盖下面的 width/opacity 过渡；必须 !important 提权 */
    transition:
        transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
        width 0.2s ease,
        opacity 0.2s ease,
        margin 0.3s,
        color 0.3s !important;
    display: inline-block;
    /* 显式宽度让折叠时 width→0 可插值，配合裁剪+渐隐平滑收起（auto→0 无法动画） */
    width: 100%;
    opacity: 1;
    overflow: hidden;
    white-space: nowrap;
    vertical-align: middle;
}

.sidebar-menu .ant-menu-item:hover {
    background: rgba(255, 255, 255, 0.1) !important;
}

.sidebar-menu .ant-menu-item-selected {
    background: rgba(255, 255, 255, 0.2) !important;
    border-left: 3px solid white;
}

.sidebar-menu .ant-menu-item-selected .ant-menu-title-content {
    transform: translateX(8px);
}

.sidebar-menu .ant-menu-item-selected:hover {
    background: rgba(255, 255, 255, 0.25) !important;
}

.sidebar-menu .ant-menu-item-selected:hover .ant-menu-title-content {
    transform: translateX(8px);
}

.sidebar-menu .ant-menu-item-group-title {
    padding: 12px 20px 8px !important;
    font-size: 12px !important;
    color: rgba(255, 255, 255, 0.7) !important;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
    /* 折叠时渐隐并收起占位高度（!important 防止被 antd 默认 transition 覆盖） */
    max-height: 40px;
    opacity: 1;
    overflow: hidden;
    transition:
        opacity 0.2s ease,
        max-height 0.2s ease,
        padding 0.2s ease !important;
}

.sidebar-menu .ant-menu-item-icon {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 18px !important;
    display: inline-flex;
    align-items: center;
}

/* hover 放大只作用于非选中项；选中项图标固定 translateX(8px)，hover 时不得变 transform 导致跳动 */
.sidebar-menu .ant-menu-item:hover:not(.ant-menu-item-selected) .ant-menu-item-icon {
    transform: scale(1.05);
}

.sidebar-menu .ant-menu-item-selected .ant-menu-item-icon {
    transform: translateX(8px);
}

@media (max-width: 768px) {
    .sidebar-menu .ant-menu-item {
        padding: 14px 20px !important;
    }
}

/* ── 折叠态（60px）：图标居中，覆盖展开态的左对齐 padding/位移 ── */
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item,
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item-group-title {
    padding: 12px 0 !important;
    text-align: center;
}

/* 分组标题折叠时渐隐并完全收起，不占纵向空间 */
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item-group-title {
    max-height: 0;
    opacity: 0;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}

.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item .ant-menu-title-content,
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item-selected .ant-menu-title-content {
    transform: none !important;
}

.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item .ant-menu-item-icon,
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item:hover .ant-menu-item-icon,
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item-selected .ant-menu-item-icon {
    transform: none !important;
    margin: 0;
}

/* 折叠时去掉左侧 3px 选中边框（会挤偏图标）；只过渡宽度，避免 none 突变 */
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item-selected {
    border-left-width: 0 !important;
}

/* 折叠时菜单文字平滑收起：width 100%→0 插值 + 裁剪 + 渐隐；
   不用 display:none（无法过渡，文字瞬间消失） */
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item .ant-menu-title-content,
.sidebar-menu.ant-menu-vertical .ant-menu-item .ant-menu-title-content {
    width: 0 !important;
    opacity: 0 !important;
}

/* 兼容：部分版本折叠态用 vertical 类渲染，同样居中 */
.sidebar-menu.ant-menu-vertical .ant-menu-item,
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item {
    padding-left: 0 !important;
    padding-right: 0 !important;
}

/* 折叠态 flex 子元素居中（display:flex 已生效，缺 justify-content） */
.sidebar-menu.ant-menu-inline-collapsed .ant-menu-item {
    justify-content: center !important;
}