/* 用户信息区域样式 */
.user-section {
    background: linear-gradient(135deg, #5B9BD5 0%, #7FB3E6 50%, #9CC8F0 100%);
    padding: 50px 24px 35px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

/* 添加装饰性背景元素 */
.user-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.user-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.user-header {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 28px;
    position: relative;
    z-index: 1;
}

.avatar-placeholder {
    width: 76px;
    height: 76px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid rgba(255, 255, 255, 0.4);
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.avatar-placeholder svg {
    width: 38px;
    height: 38px;
    color: #fff;
}

.user-info {
    flex: 1;
}

.user-name {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.user-desc {
    font-size: 14px;
    opacity: 0.85;
    font-weight: 300;
}

/* 登录/注册按钮 */
.auth-buttons {
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.btn {
    padding: 15px 70px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-login {
    background: #fff;
    color: #5B9BD5;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    letter-spacing: 1px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-login:active {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(0) scale(0.98);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

/* 功能列表区域 */
.menu-section {
    padding: 24px 20px;
    padding-bottom: 100px;
    background: #F8F9FA;
    min-height: calc(100vh - 280px);
}

.menu-group {
    margin-bottom: 24px;
}

.menu-title {
    font-size: 13px;
    color: #8E8E93;
    font-weight: 500;
    margin-bottom: 14px;
    padding-left: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.menu-list {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    text-decoration: none;
    color: #1C1C1E;
    border-bottom: 1px solid #F2F2F7;
    transition: all 0.25s ease;
    position: relative;
}

.menu-item:last-child {
    border-bottom: none;
}

.menu-item:active {
    background: #F2F2F7;
}

.menu-item::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: transparent;
    transition: background 0.3s ease;
}

.menu-item:active::after {
    background: #5B9BD5;
}

.menu-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.menu-item:active .menu-icon {
    transform: scale(0.95);
}

.menu-icon svg {
    width: 22px;
    height: 22px;
}

.icon-settings {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    color: #4CAF50;
}

.icon-profile {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    color: #2196F3;
}

.icon-help {
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
    color: #FF9800;
}

.icon-about {
    background: linear-gradient(135deg, #E0F2F1 0%, #B2DFDB 100%);
    color: #009688;
}

.menu-text {
    flex: 1;
    font-size: 16px;
    color: #1C1C1E;
    font-weight: 400;
}

.menu-arrow {
    width: 20px;
    height: 20px;
    color: #C7C7CC;
    flex-shrink: 0;
    transition: transform 0.2s ease, color 0.2s ease;
}

.menu-item:active .menu-arrow {
    transform: translateX(4px);
    color: #5B9BD5;
}