/* 用户信息区域（登录/未登录状态） */
.user-block {
    padding: 16px;
    border-top: 1px solid #E2E8F0;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.2s;
}

.user-block:hover {
    background: rgba(255, 255, 255, 0.8);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--trace-active) 0%, #4DB6AC 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 16px;
    flex-shrink: 0;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 2px;
}

.user-license {
    font-size: 12px;
    color: #94A3B8;
}

.sidebar-unit.collapsed .user-info {
    display: none;
}

/* 登录提示区域 */
.login-prompt {
    padding: 16px;
    border-top: 1px solid #E2E8F0;
    background: rgba(255, 255, 255, 0.5);
}

/* 登录按钮 */
.login-btn-sidebar {
    width: 100%;
    padding: 12px 16px;
    background: linear-gradient(135deg, var(--trace-active) 0%, #4DB6AC 100%);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-btn-sidebar:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(109, 213, 232, 0.3);
}

.sidebar-unit.collapsed .login-prompt {
    padding: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sidebar-unit.collapsed .login-btn-sidebar {
    width: 32px;
    height: 32px;
    min-width: 32px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0;
    background: #F1F5F9;
    border: 1px solid #E2E8F0;
    box-shadow: none;
}

.sidebar-unit.collapsed .login-btn-sidebar:hover {
    background: #E2E8F0;
    transform: none;
    box-shadow: none;
}

.sidebar-unit.collapsed .login-btn-sidebar span {
    display: none;
}

.sidebar-unit.collapsed .login-btn-sidebar::before {
    content: '';
    width: 20px;
    height: 20px;
    background-image: url('https://chat-web-1253214834.cos.ap-beijing.myqcloud.com/image/a98360672e312beb0fcc5fdaaf57a568.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    border-radius: 50%;
}