/*--- 游戏分类信息页面信息层级视觉优化 ---*/

/* 信息层级变量 */
:root {
    /* 信息层级颜色 */
    --level-primary-bg: #ffffff;
    --level-primary-border: #e9ecef;
    --level-primary-text: #212529;
    --level-primary-shadow: rgba(0, 0, 0, 0.08);
    
    --level-secondary-bg: #f8f9fa;
    --level-secondary-border: #dee2e6;
    --level-secondary-text: #495057;
    --level-secondary-shadow: rgba(0, 0, 0, 0.05);
    
    --level-tertiary-bg: #f1f3f5;
    --level-tertiary-border: #ced4da;
    --level-tertiary-text: #6c757d;
    --level-tertiary-shadow: rgba(0, 0, 0, 0.03);
    
    /* 信息层级间距 */
    --level-gap-xs: 0.25rem;
    --level-gap-sm: 0.5rem;
    --level-gap-md: 1rem;
    --level-gap-lg: 1.5rem;
    --level-gap-xl: 2rem;
    
    /* 信息层级缩进 */
    --level-indent-1: 0;
    --level-indent-2: 1.5rem;
    --level-indent-3: 3rem;
    
    /* 信息层级字体大小 */
    --level-font-size-h1: 2rem;
    --level-font-size-h2: 1.5rem;
    --level-font-size-h3: 1.25rem;
    --level-font-size-h4: 1.125rem;
    --level-font-size-body: 1rem;
    --level-font-size-small: 0.875rem;
    --level-font-size-xs: 0.75rem;
    
    /* 信息层级字体粗细 */
    --level-font-weight-light: 300;
    --level-font-weight-normal: 400;
    --level-font-weight-medium: 500;
    --level-font-weight-semibold: 600;
    --level-font-weight-bold: 700;
    
    /* 信息层级线高 */
    --level-line-height-tight: 1.25;
    --level-line-height-normal: 1.5;
    --level-line-height-relaxed: 1.75;
}

/* 基础信息层级样式 */
.level-1 {
    background-color: var(--level-primary-bg);
    border: 1px solid var(--level-primary-border);
    color: var(--level-primary-text);
    box-shadow: 0 2px 4px var(--level-primary-shadow);
    border-radius: var(--border-radius-md);
    padding: var(--level-gap-lg);
    margin-bottom: var(--level-gap-lg);
}

.level-2 {
    background-color: var(--level-secondary-bg);
    border: 1px solid var(--level-secondary-border);
    color: var(--level-secondary-text);
    box-shadow: 0 1px 3px var(--level-secondary-shadow);
    border-radius: var(--border-radius-sm);
    padding: var(--level-gap-md);
    margin-bottom: var(--level-gap-md);
}

.level-3 {
    background-color: var(--level-tertiary-bg);
    border: 1px solid var(--level-tertiary-border);
    color: var(--level-tertiary-text);
    box-shadow: 0 1px 2px var(--level-tertiary-shadow);
    border-radius: var(--border-radius-sm);
    padding: var(--level-gap-sm);
    margin-bottom: var(--level-gap-sm);
}

/* 页面层级结构 */
.page-container {
    display: flex;
    flex-direction: column;
    gap: var(--level-gap-lg);
}

.page-header {
    z-index: 100;
}

.page-content {
    display: flex;
    flex-direction: column;
    gap: var(--level-gap-lg);
}

.page-footer {
    margin-top: auto;
}

/* 内容区块层级 */
.content-block {
    background-color: var(--level-primary-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px var(--level-primary-shadow);
    overflow: hidden;
    margin-bottom: var(--level-gap-lg);
}

.content-block-header {
    background-color: var(--level-secondary-bg);
    border-bottom: 1px solid var(--level-secondary-border);
    padding: var(--level-gap-md);
}

.content-block-title {
    font-size: var(--level-font-size-h3);
    font-weight: var(--level-font-weight-semibold);
    color: var(--level-primary-text);
    margin: 0;
}

.content-block-body {
    padding: var(--level-gap-lg);
}

/* 嵌套内容区块 */
.content-block .content-block {
    background-color: var(--level-secondary-bg);
    border: 1px solid var(--level-secondary-border);
    margin-top: var(--level-gap-md);
    margin-bottom: var(--level-gap-md);
}

.content-block .content-block .content-block {
    background-color: var(--level-tertiary-bg);
    border: 1px solid var(--level-tertiary-border);
    margin-top: var(--level-gap-sm);
    margin-bottom: var(--level-gap-sm);
}

/* 游戏卡片层级 */
.game-card {
    background-color: var(--level-primary-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px var(--level-primary-shadow);
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
    margin-bottom: var(--level-gap-lg);
}

.game-card:hover {
    box-shadow: 0 4px 12px var(--level-primary-shadow);
    transform: translateY(-2px);
}

.game-card-header {
    background-color: var(--level-secondary-bg);
    border-bottom: 1px solid var(--level-secondary-border);
    padding: var(--level-gap-md);
}

.game-card-title {
    font-size: var(--level-font-size-h3);
    font-weight: var(--level-font-weight-semibold);
    color: var(--level-primary-text);
    margin: 0;
}

.game-card-body {
    padding: var(--level-gap-md);
}

/* 游戏卡片内的嵌套元素 */
.game-card .game-card {
    background-color: var(--level-secondary-bg);
    border: 1px solid var(--level-secondary-border);
    margin-top: var(--level-gap-sm);
    margin-bottom: var(--level-gap-sm);
}

.game-card .game-card .game-card {
    background-color: var(--level-tertiary-bg);
    border: 1px solid var(--level-tertiary-border);
    margin-top: var(--level-gap-xs);
    margin-bottom: var(--level-gap-xs);
}

/* 游戏信息列表层级 */
.game-info-list {
    display: flex;
    flex-direction: column;
    gap: var(--level-gap-sm);
    margin-bottom: var(--level-gap-lg);
}

.game-info-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--level-gap-sm) 0;
    border-bottom: 1px solid var(--level-secondary-border);
}

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

.game-info-item dt {
    font-weight: var(--level-font-weight-medium);
    color: var(--level-secondary-text);
    flex: 0 0 120px;
}

.game-info-item dd {
    color: var(--level-primary-text);
    flex: 1;
    text-align: right;
}

/* 游戏标签层级 */
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--level-gap-sm);
    margin-bottom: var(--level-gap-md);
}

.tag {
    background-color: var(--level-secondary-bg);
    border: 1px solid var(--level-secondary-border);
    color: var(--level-secondary-text);
    font-size: var(--level-font-size-small);
    font-weight: var(--level-font-weight-medium);
    padding: var(--level-gap-xs) var(--level-gap-sm);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.tag:hover {
    background-color: var(--level-tertiary-bg);
    color: var(--level-primary-text);
}

.tag.tag-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.tag.tag-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.tag.tag-warning {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
    color: white;
}

.tag.tag-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--text-primary);
}

/* 折叠面板层级 */
.accordion-container {
    background-color: var(--level-primary-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px var(--level-primary-shadow);
    overflow: hidden;
    margin-bottom: var(--level-gap-lg);
}

.section-title {
    font-size: var(--level-font-size-h2);
    font-weight: var(--level-font-weight-semibold);
    color: var(--level-primary-text);
    margin: 0 0 var(--level-gap-md) 0;
    padding-bottom: var(--level-gap-sm);
    border-bottom: 2px solid var(--primary-color);
}

.accordion-item {
    border-bottom: 1px solid var(--level-secondary-border);
}

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

.accordion {
    background-color: var(--level-secondary-bg);
    border: none;
    width: 100%;
    text-align: left;
    padding: var(--level-gap-md);
    font-size: var(--level-font-size-h4);
    font-weight: var(--level-font-weight-medium);
    color: var(--level-primary-text);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    position: relative;
}

.accordion:hover {
    background-color: var(--level-tertiary-bg);
}

.accordion.active {
    background-color: var(--primary-color);
    color: white;
}

.accordion:after {
    content: '\002B';
    font-size: var(--level-font-size-h3);
    position: absolute;
    right: var(--level-gap-md);
    top: 50%;
    transform: translateY(-50%);
    transition: transform var(--transition-fast);
}

.accordion.active:after {
    transform: translateY(-50%) rotate(45deg);
}

.panel {
    background-color: var(--level-primary-bg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) ease-out;
}

.panel.show {
    max-height: 1000px;
    transition: max-height var(--transition-slow) ease-in;
}

.panel-content {
    padding: var(--level-gap-lg);
}

/* 游戏描述层级 */
.game-description-section {
    background-color: var(--level-primary-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px var(--level-primary-shadow);
    padding: var(--level-gap-lg);
    margin-bottom: var(--level-gap-lg);
}

.game-desc {
    font-size: var(--level-font-size-body);
    line-height: var(--level-line-height-relaxed);
    color: var(--level-primary-text);
}

.game-desc p {
    margin-bottom: var(--level-gap-md);
}

.game-desc p:last-child {
    margin-bottom: 0;
}

/* 游戏列表层级 */
.game-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--level-gap-lg);
    margin-bottom: var(--level-gap-xl);
}

.game-item {
    background-color: var(--level-primary-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px var(--level-primary-shadow);
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.game-item:hover {
    box-shadow: 0 4px 12px var(--level-primary-shadow);
    transform: translateY(-4px);
}

.game-item-img {
    height: 180px;
    overflow: hidden;
}

.game-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.game-item:hover .game-item-img img {
    transform: scale(1.05);
}

.game-item-info {
    padding: var(--level-gap-md);
}

.game-item-title {
    font-size: var(--level-font-size-h4);
    font-weight: var(--level-font-weight-semibold);
    color: var(--level-primary-text);
    margin: 0 0 var(--level-gap-sm) 0;
    line-height: var(--level-line-height-tight);
}

.game-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--level-gap-xs);
    margin-bottom: var(--level-gap-sm);
}

.game-item-desc {
    font-size: var(--level-font-size-small);
    line-height: var(--level-line-height-normal);
    color: var(--level-secondary-text);
    margin-bottom: var(--level-gap-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.game-item-rating {
    margin-bottom: var(--level-gap-md);
}

/* 分页导航层级 */
.pagination-nav {
    display: flex;
    justify-content: center;
    margin: var(--level-gap-xl) 0;
}

.pagination {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: var(--level-gap-xs);
}

.pagination-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--level-primary-bg);
    border: 1px solid var(--level-secondary-border);
    border-radius: var(--border-radius-sm);
    color: var(--level-primary-text);
    text-decoration: none;
    font-size: var(--level-font-size-body);
    font-weight: var(--level-font-weight-medium);
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.pagination-item:hover {
    background-color: var(--level-secondary-bg);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.pagination-item.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 搜索区域层级 */
.search-section {
    background-color: var(--level-primary-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px var(--level-primary-shadow);
    padding: var(--level-gap-lg);
    margin-bottom: var(--level-gap-lg);
}

.search-container {
    position: relative;
}

.search-input {
    width: 100%;
    height: 48px;
    padding: 0 48px 0 var(--level-gap-md);
    font-size: var(--level-font-size-body);
    border: 1px solid var(--level-secondary-border);
    border-radius: var(--border-radius-md);
    background-color: var(--level-primary-bg);
    color: var(--level-primary-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 132, 196, 0.25);
    outline: none;
}

.search-btn {
    position: absolute;
    right: var(--level-gap-sm);
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    color: var(--level-secondary-text);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.search-btn:hover {
    color: var(--primary-color);
    background-color: var(--level-secondary-bg);
}

/* 面包屑导航层级 */
.breadcrumb-nav {
    margin-bottom: var(--level-gap-lg);
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    font-size: var(--level-font-size-small);
    color: var(--level-secondary-text);
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin: 0 var(--level-gap-sm);
    color: var(--level-tertiary-text);
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--level-tertiary-text);
}

/* 响应式信息层级调整 */
@media (max-width: 768px) {
    .game-info-list {
        gap: var(--level-gap-xs);
    }
    
    .game-info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--level-gap-xs);
    }
    
    .game-info-item dt {
        flex: none;
    }
    
    .game-info-item dd {
        text-align: left;
    }
    
    .game-list {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--level-gap-md);
    }
    
    .content-block-body,
    .panel-content {
        padding: var(--level-gap-md);
    }
}

@media (max-width: 480px) {
    .game-list {
        grid-template-columns: 1fr;
        gap: var(--level-gap-md);
    }
    
    .tags-container {
        gap: var(--level-gap-xs);
    }
    
    .tag {
        font-size: var(--level-font-size-xs);
        padding: 2px var(--level-gap-xs);
    }
    
    .content-block-body,
    .panel-content {
        padding: var(--level-gap-sm);
    }
}

/* 高对比度模式下的信息层级调整 */
@media (prefers-contrast: high) {
    :root {
        --level-primary-shadow: rgba(0, 0, 0, 0.5);
        --level-secondary-shadow: rgba(0, 0, 0, 0.3);
        --level-tertiary-shadow: rgba(0, 0, 0, 0.2);
    }
    
    .content-block,
    .game-card,
    .accordion-container,
    .game-description-section,
    .search-section {
        border: 2px solid var(--level-primary-border);
    }
    
    .tag {
        border: 1px solid currentColor;
    }
}

/* 深色模式下的信息层级调整 */
@media (prefers-color-scheme: dark) {
    :root {
        --level-primary-bg: #1a1d20;
        --level-primary-border: #495057;
        --level-primary-text: #f8f9fa;
        --level-primary-shadow: rgba(0, 0, 0, 0.3);
        
        --level-secondary-bg: #212529;
        --level-secondary-border: #343a40;
        --level-secondary-text: #adb5bd;
        --level-secondary-shadow: rgba(0, 0, 0, 0.2);
        
        --level-tertiary-bg: #2c3034;
        --level-tertiary-border: #495057;
        --level-tertiary-text: #6c757d;
        --level-tertiary-shadow: rgba(0, 0, 0, 0.1);
    }
}