.mdui-drawer {
    width: 240px;
}
.main-content {
    flex: 1;
    padding: 20px;
    margin-left: 240px;
}
.sidebar-item {
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s;
}
.sidebar-item:hover {
    background-color: rgba(0, 0, 0, 0.05);
}
.sidebar-item.active {
    color: var(--mdui-color-primary);
    background-color: rgba(0, 0, 0, 0.02);
}
.setting-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}
.setting-title {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 15px;
}
.theme-radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
}
.theme-radio-item {
    display: flex;
    align-items: center;
    cursor: pointer;
}
.theme-color-preview {
    width: 20px;
    height: 20px;
    margin-right: 8px;
    border-radius: 4px;
    border: 1px solid #ddd;
}
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    .main-content {
        margin-left: 0;
    }
    .theme-color-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}