:root {
    /* 主色调变量 */
    --primary-color: #8c52ff;
    --secondary-color: #5c9eff;
    --accent-color: #ff6b9b;
    --light-color: #f8f9fa;
    --dark-color: #1e1e2f;
    --text-primary: #333340;
    --text-secondary: #666680;
    --text-light: #f8f9fa;
    --background-color: #f0f2f6;
    --card-bg: #ffffff;
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    
    /* 间距变量 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* 动画变量 */
    --transition-fast: 0.15s;
    --transition-normal: 0.25s;
    --transition-slow: 0.4s;

    /* 卡片变量 */
    --card-radius: 16px;
    --button-radius: 50px;
    
    /* 阴影变量 */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 5px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
}

/* 基础样式 */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.5;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

/* 布局容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 头部样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: var(--card-bg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

header.scrolled {
    box-shadow: var(--shadow-md);
}

header nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    height: 60px;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.nav-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.icon-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-color);
    color: var(--primary-color);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.icon-button:hover {
    background-color: var(--primary-color);
    color: var(--light-color);
    transform: translateY(-2px);
}

/* 侧边菜单 */
#sideMenu {
    position: fixed;
    top: 0;
    left: 0;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background-color: var(--card-bg);
    z-index: 100;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
}

#sideMenu.active {
    transform: translateX(0);
}

.side-menu-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.side-menu-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.close-menu {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
}

#menuCategories {
    padding: var(--spacing-lg);
}

.menu-category {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--card-radius);
    background-color: var(--light-color);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.menu-category:hover {
    background-color: var(--primary-color);
    color: var(--light-color);
    transform: translateX(5px);
}

.menu-category i {
    margin-right: var(--spacing-md);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 搜索覆盖层 */
#searchOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--card-bg);
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-fast);
}

#searchOverlay.hidden {
    opacity: 0;
    transform: translateY(100%);
    pointer-events: none;
}

.search-header {
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.search-input-wrapper {
    flex: 1;
    position: relative;
    margin: 0 var(--spacing-md);
}

#searchInput {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 40px;
    border-radius: var(--button-radius);
    border: 1px solid rgba(0,0,0,0.1);
    font-size: 1rem;
    background-color: var(--light-color);
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

#closeSearch {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.search-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.search-title {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

#searchResultsGrid {
    margin-top: var(--spacing-lg);
}

/* 主内容区 */
main {
    padding-top: 70px;
    min-height: calc(100vh - 70px);
}

/* 游戏分类部分 */
.category-section {
    margin-bottom: var(--spacing-xl);
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.category-title i {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

.view-all {
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-weight: 500;
}

/* 游戏网格 */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

/* 游戏卡片 */
.game-card {
    position: relative;
    background-color: var(--card-bg);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.game-card:hover, .game-card:active {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.game-image-container {
    position: relative;
    padding-top: 100%;  /* 正方形比例 */
    overflow: hidden;
}

.game-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.game-card:hover .game-image {
    transform: scale(1.05);
}

.game-info {
    padding: var(--spacing-md);
}

.game-title {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.game-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.game-rating {
    display: flex;
    align-items: center;
}

.stars {
    color: #ffb400;
    margin-right: var(--spacing-xs);
}

.game-plays {
    color: var(--accent-color);
    font-weight: 500;
}

.game-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background-color: var(--accent-color);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 30px;
    z-index: 1;
}

.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(30, 30, 47, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.game-card:hover .game-overlay, .game-card:active .game-overlay {
    opacity: 1;
}

.play-now {
    background: var(--gradient-accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--button-radius);
    font-weight: 500;
    font-size: 0.9rem;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    box-shadow: 0 5px 15px rgba(255, 107, 155, 0.4);
}

.game-card:hover .play-now, .game-card:active .play-now {
    transform: translateY(0);
}

/* 分类页面样式 */
.category-page .category-description {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
}

.category-page .category-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.category-page .category-count {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 游戏详情页样式 */
.game-info-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.game-preview {
    position: relative;
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.game-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.game-details {
    padding: var(--spacing-lg);
    background-color: var(--card-bg);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-sm);
}

.game-details h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

#gameCategory {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--button-radius);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

#gameDescription {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

#playButton {
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--button-radius);
    background: var(--gradient-primary);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 25px rgba(140, 82, 255, 0.3);
}

#playButton:hover, #playButton:active {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(140, 82, 255, 0.4);
}

.game-stats {
    margin-bottom: var(--spacing-lg);
}

.rating {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.stars i {
    color: #ffb400;
}

.plays {
    color: var(--accent-color);
    font-weight: 500;
}

/* 相关游戏部分 */
.related-games-section {
    margin-top: var(--spacing-xl);
}

.related-games-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

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

.footer-columns {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.footer-column {
    flex: 1;
    min-width: 200px;
}

.footer-heading {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-heading:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-sm);
}

.footer-link, .footer-category {
    color: var(--text-light);
    opacity: 0.8;
    transition: all var(--transition-fast);
    padding: var(--spacing-xs) 0;
}

.footer-link:hover, .footer-category:hover {
    color: var(--primary-color);
    opacity: 1;
    transform: translateX(3px);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    gap: var(--spacing-md);
}

.copyright {
    font-size: 0.9rem;
    opacity: 0.7;
}

.last-updated {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 响应式布局 */
@media (min-width: 768px) {
    .game-info-container {
        flex-direction: row;
    }
    
    .game-preview {
        flex: 1;
    }
    
    .game-details {
        flex: 1;
    }
    
    #sideMenu {
        width: 320px;
    }
}

@media (max-width: 767px) {
    .game-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .game-info {
        padding: var(--spacing-sm);
    }
    
    .game-title {
        font-size: 0.9rem;
    }
    
    #playButton {
        padding: var(--spacing-sm);
    }
    
    .footer-columns {
        flex-direction: column;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

/* 无结果显示 */
.no-results {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.no-results p {
    margin-top: var(--spacing-md);
}