/* ========================================
   用户中心首页样式
   统一风格 + 响应式 + 深浅主题支持
   ======================================== */
.user-container {
    max-width: var(--layout-container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   用户信息卡片
   ======================================== */
.user-header {
    background: var(--color-card-bg);
    border-radius: calc(var(--layout-border-radius) * 1.5);
    border: 1px solid var(--color-border-color);
    padding: 24px;
    margin-bottom: 20px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.user-avatar-wrapper {
    position: relative;
    flex-shrink: 0;
}

.user-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-primary);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.2);
}

.vip-badge {
    position: absolute;
    bottom: -4px;
    right: -4px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

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

.user-name-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.user-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-color);
    margin: 0;
}

.user-level {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.user-level i {
    font-size: 11px;
}

.user-level.level-1,
.user-level.level-2 {
    background: linear-gradient(135deg, #9CA3AF, #6B7280);
    color: #fff;
}

.user-level.level-3 {
    background: linear-gradient(135deg, #CD7F32, #B87333);
    color: #fff;
}

.user-level.level-4 {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #7C2D12;
}

.user-level.level-5,
.user-level.level-6 {
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    color: #fff;
}

.user-meta {
    display: flex;
    gap: 16px;
    font-size: var(--typo-font-size-small);
    color: var(--color-text-color-secondary);
    flex-wrap: wrap;
}

/* 用户统计 */
.user-stats {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 16px 0;
    background: var(--color-bg-color);
    border-radius: var(--layout-border-radius);
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-value {
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.stat-value em {
    font-size: 14px;
    font-style: normal;
}

.stat-label {
    display: block;
    font-size: var(--typo-font-size-small);
    color: var(--color-text-color-secondary);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--color-border-color);
}

/* ========================================
   主内容区
   ======================================== */
.user-main {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 20px;
}

.user-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.user-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 内容卡片 */
.content-card {
    background: var(--color-card-bg);
    border-radius: calc(var(--layout-border-radius) * 1.5);
    border: 1px solid var(--color-border-color);
    padding: 20px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-color);
    margin: 0;
}

.card-title i {
    color: var(--color-primary);
    font-size: 14px;
}

.card-title::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 2px;
}

.card-more {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--typo-font-size-small);
    color: var(--color-text-color-secondary);
    text-decoration: none;
    transition: color var(--effect-transition-fast);
}

.card-more:hover {
    color: var(--color-primary);
}

/* ========================================
   最近阅读
   ======================================== */
.reading-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.reading-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--color-bg-color);
    border-radius: var(--layout-border-radius);
    text-decoration: none;
    transition: all var(--effect-transition-fast);
}

.reading-item:hover {
    background: rgba(var(--color-primary-rgb), 0.06);
    transform: translateX(4px);
}

.reading-cover-wrapper {
    width: 60px;
    height: 80px;
    border-radius: calc(var(--layout-border-radius) / 2);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-border-color);
}

.reading-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.reading-title {
    font-size: var(--typo-font-size-base);
    font-weight: 500;
    color: var(--color-text-color);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.reading-chapter {
    font-size: var(--typo-font-size-small);
    color: var(--color-text-color-secondary);
    margin-bottom: 4px;
}

.reading-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--color-text-color-secondary);
}

/* 删除按钮 */
.delete-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--effect-transition-fast), background var(--effect-transition-fast);
    z-index: 1;
}

.delete-btn:hover {
    background: var(--color-danger);
}

.reading-item {
    position: relative;
}

.reading-item:hover .delete-btn {
    opacity: 1;
}

.favorite-card-wrapper {
    position: relative;
}

.favorite-card-wrapper:hover .delete-btn {
    opacity: 1;
}

.favorite-card-wrapper .delete-btn {
    background: rgba(var(--color-danger), 0.8);
}

.favorite-card-wrapper .delete-btn:hover {
    background: var(--color-danger);
}

/* 移动端：始终显示删除按钮 */
@media (max-width: 768px) {
    .delete-btn {
        opacity: 1;
        width: 32px;
        height: 32px;
        top: 6px;
        right: 6px;
    }
    
    .favorite-card-wrapper .delete-btn {
        opacity: 1;
    }
}

/* ========================================
   我的收藏
   ======================================== */
.favorite-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.favorite-card {
    text-decoration: none;
    transition: transform var(--effect-transition-fast);
}

.favorite-card:hover {
    transform: translateY(-4px);
}

.favorite-cover-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 133.33%;
    border-radius: var(--layout-border-radius);
    overflow: hidden;
    background: var(--color-bg-color);
    box-shadow: var(--effect-shadow-card);
}

.favorite-cover-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--effect-transition-normal);
}

.favorite-card:hover .favorite-cover-wrapper img {
    transform: scale(1.05);
}

.favorite-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--color-danger), 0.9);
    color: #fff;
    border-radius: 50%;
    font-size: 11px;
}

.favorite-info {
    padding: 8px 4px 0;
}

.favorite-title {
    font-size: var(--typo-font-size-small);
    font-weight: 500;
    color: var(--color-text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.favorite-chapter {
    font-size: 12px;
    color: var(--color-text-color-secondary);
    margin-top: 2px;
}

/* ========================================
   侧边栏卡片
   ======================================== */
.sidebar-card {
    background: var(--color-card-bg);
    border-radius: calc(var(--layout-border-radius) * 1.5);
    border: 1px solid var(--color-border-color);
    padding: 20px;
}

/* 工具卡片 */
.tools-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--layout-border-radius);
    text-decoration: none;
    transition: all var(--effect-transition-fast);
    color: var(--color-text-color-secondary);
}

.tool-item:hover {
    background: rgba(var(--color-primary-rgb), 0.06);
    color: var(--color-primary);
}

.tool-item i {
    width: 20px;
    text-align: center;
    font-size: 14px;
}

.tool-item span {
    font-size: var(--typo-font-size-small);
}

/* ========================================
   我的关注
   ======================================== */
.followed-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.followed-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    border-radius: var(--layout-border-radius);
    text-decoration: none;
    transition: background var(--effect-transition-fast);
}

.followed-item:hover {
    background: rgba(var(--color-primary-rgb), 0.06);
}

.followed-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--color-border-color);
}

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

.followed-name {
    font-size: var(--typo-font-size-small);
    font-weight: 500;
    color: var(--color-text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.followed-desc {
    font-size: 12px;
    color: var(--color-text-color-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-top: 2px;
}

.followed-btn {
    padding: 6px 12px;
    border-radius: var(--layout-border-radius);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--color-border-color);
    background: transparent;
    color: var(--color-text-color-secondary);
    transition: all var(--effect-transition-fast);
    flex-shrink: 0;
}

.followed-btn.following {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.followed-btn.following:hover {
    background: rgba(var(--color-danger), 0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.followed-btn.following:hover i::before {
    content: "\f00d";
}

/* ========================================
   响应式设计
   ======================================== */

/* 平板端 */
@media (max-width: 1024px) {
    .user-main {
        grid-template-columns: 1fr;
    }
    
    .user-sidebar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-actions {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .favorite-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 移动端 */
@media (max-width: 768px) {
    
    .user-container {
        padding: 0 16px;
    }
    
    .user-header {
        padding: 16px;
    }
    
    .user-profile {
        flex-direction: column;
        text-align: center;
    }
    
    .user-info {
        text-align: center;
    }
    
    .user-name-row {
        justify-content: center;
    }
    
    .user-meta {
        justify-content: center;
    }
    
    .user-avatar {
        width: 64px;
        height: 64px;
    }
    
    .user-stats {
        flex-wrap: wrap;
        gap: 12px;
    }
        
    .stat-divider {
        display: none;
    }
    
    .quick-actions {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    
    .quick-action-item {
        padding: 12px 4px;
    }
    
    .action-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .action-title {
        font-size: 11px;
    }
    
    .content-card,
    .sidebar-card {
        padding: 16px;
    }
    
    .reading-item {
        padding: 10px;
    }
    
    .reading-cover-wrapper {
        width: 50px;
        height: 66px;
    }
    
    .reading-progress {
        display: none;
    }
    
    .favorite-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .user-sidebar {
        grid-template-columns: 1fr;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .user-name {
        font-size: 18px;
    }
    
    .stat-value {
        font-size: 18px;
    }
    
    .quick-actions {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .card-title {
        font-size: 14px;
    }
    
    .points-actions {
        flex-direction: column;
    }
    
    .points-btn {
        justify-content: center;
    }
}

/* ========================================
   深色主题适配
   ======================================== */
@media (prefers-color-scheme: dark) {
    :root[data-theme="auto"] .user-avatar {
        box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    }
}

[data-theme="dark"] .user-avatar {
    border-color: var(--color-primary);
}

[data-theme="dark"] .user-level.level-4 {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #1a1a1a;
}

/* ========================================
   未登录提示
   ======================================== */
.user-login-prompt {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: 40px 20px;
}

.login-prompt-content {
    text-align: center;
    max-width: 400px;
}

.login-prompt-icon {
    font-size: 80px;
    color: var(--color-text-color-secondary);
    margin-bottom: 24px;
    opacity: 0.5;
}

.login-prompt-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text-color);
    margin: 0 0 12px;
}

.login-prompt-desc {
    font-size: var(--typo-font-size-base);
    color: var(--color-text-color-secondary);
    margin: 0 0 32px;
    line-height: 1.6;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--layout-border-radius);
    font-size: var(--typo-font-size-base);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--effect-transition-fast);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #8B5CF6);
    color: #fff;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-card-bg);
    color: var(--color-text-color);
    border: 1px solid var(--color-border-color);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--typo-font-size-small);
}

/* ========================================
   加载骨架屏
   ======================================== */
.loading-skeleton {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skeleton-item {
    height: 104px;
    background: linear-gradient(90deg, 
        var(--color-bg-color) 25%, 
        var(--color-border-color) 50%, 
        var(--color-bg-color) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--layout-border-radius);
}

.loading-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.skeleton-card {
    aspect-ratio: 3 / 4;
    background: linear-gradient(90deg, 
        var(--color-bg-color) 25%, 
        var(--color-border-color) 50%, 
        var(--color-bg-color) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--layout-border-radius);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ========================================
   空状态
   ======================================== */
.notice-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--color-text-color-secondary);
    gap: 8px;
}

.notice-empty i {
    font-size: 32px;
    opacity: 0.5;
    margin-bottom: 8px;
}

.notice-empty span {
    font-size: var(--typo-font-size-small);
}

.notice-empty .btn {
    margin-top: 8px;
}

/* 移动端骨架屏适配 */
@media (max-width: 768px) {
    .loading-skeleton-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .login-prompt-title {
        font-size: 20px;
    }
    
    .login-prompt-icon {
        font-size: 60px;
    }
    
    .login-prompt-actions {
        flex-direction: column;
    }
}