.left-menu-container {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    padding: 20px 0;
    margin-bottom: 20px;
}

.left-menu-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 15px;
    text-align: center;
}

.left-menu-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    margin: 0 auto 15px;
    display: block;
    object-fit: cover;
    border: 3px solid #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.left-menu-avatar:hover {
    transform: scale(1.05);
}

.left-menu-username {
    text-align: center;
    font-size: 18px;
    color: #333;
    margin-bottom: 5px;
    font-weight: 500;
}

.left-menu-role {
    text-align: center;
    font-size: 13px;
    color: #666;
    background: #f5f5f5;
    padding: 4px 12px;
    border-radius: 12px;
    display: inline-block;
}

.left-menu-section {
    margin-bottom: 20px;
}

.left-menu-section-title {
    padding: 0 20px;
    margin-bottom: 10px;
    font-size: 13px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.left-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.left-menu-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    color: #666;
    position: relative;
    margin: 2px 0;
}

.left-menu-item:hover {
    background: #f8f9fa;
    color: #1890ff;
    padding-left: 25px;
}

.left-menu-item.active {
    background: #e6f7ff;
    color: #1890ff;
    border-right: 3px solid #1890ff;
}

.left-menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: #1890ff;
}

.left-menu-icon {
    margin-right: 12px;
    font-size: 16px;
    width: 20px;
    text-align: center;
    color: #999;
    transition: color 0.3s ease;
}

.left-menu-item:hover .left-menu-icon,
.left-menu-item.active .left-menu-icon {
    color: #1890ff;
}

.left-menu-text {
    font-size: 14px;
    font-weight: 500;
}

.left-menu-badge {
    margin-left: auto;
    background: #ff4d4f;
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 12px;
}