:root {
    --color-primary: #3E4F8B; /* 主蓝色背景 */
    --color-accent-pink: #F33B6A; /* 侧边栏/背景粉色 */
    --color-accent-green: #56B033; /* 按钮/高亮绿色 */
    --color-text-white: #FFFFFF;
    --color-text-gray: #CCCCCC;
    --color-input-bg: #FFFFFF;
    --color-card-border: #D1D1D1; /* 卡片边框 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent; /* 移除移动端点击高亮 */
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--color-accent-pink); /* 整体背景色与Image 1/3匹配 */
    color: var(--color-text-white);
    overflow-x: hidden;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* --- 2. 主页面结构 --- */
.container {
    margin: 0 auto;
    background-color: var(--color-primary); /* 内容区蓝色背景 */
    box-shadow: 0 0 15px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1; /* 确保内容在侧边栏下方 */
}

/* --- 3. 顶部 Header (Image 3) --- */
.header {
    background-color: var(--color-primary);
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 15px;
    border-bottom: 1px solid rgba(255,255,255,0.1); /* 轻微分割线 */
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--color-text-white);
    position: relative;
    padding-left: 20px; /* 为背景logo预留空间 */
}

.menu-btn {
    background-color: var(--color-accent-pink);
    color: var(--color-text-white);
    padding: 8px 15px;
    border-radius: 5px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
}

/* --- 4. 游戏搜索区 (Image 3) --- */
.search-section {
    background-color: var(--color-primary);
    padding: 15px;
    padding-bottom: 20px; /* 留出与网格的距离 */
}
.search-section h2 {
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: normal;
}
.search-input-group {
    display: flex;
}
.search-input-group input {
    flex-grow: 1;
    padding: 12px 15px;
    border: none;
    border-radius: 5px 0 0 5px;
    font-size: 16px;
    color: #333;
    outline: none;
}
.search-input-group button {
    background-color: var(--color-accent-pink);
    color: var(--color-text-white);
    border: none;
    padding: 12px 20px;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.2s ease;
}
.search-input-group button:hover {
    background-color: #e02a5c;
}

/* --- 5. 游戏网格 (Image 3) --- */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); /* 移动端默认100px */
    gap: 8px; /* 移动端小间距 */
    padding: 15px;
    background-color: #485CA1; /* 游戏网格背景色，与截图一致 */
}

.game-card {
    background-color: #7280B6; /* 卡片背景色 */
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.game-card img {
    width: 100%;
    display: block;
    aspect-ratio: 1/1; /* 保持正方形 */
    object-fit: cover;
}
.game-card-title {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0,0,0,0.5); /* 标题半透明背景 */
    color: var(--color-text-white);
    font-size: 10px;
    padding: 5px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.featured-tag {
    background-color: #4CAF50; /* 绿色 Featured 标签 */
    color: var(--color-text-white);
    font-size: 9px;
    font-weight: bold;
    padding: 2px 6px;
    position: absolute;
    top: 5px;
    left: -15px; /* 旋转后调整位置 */
    transform: rotate(-45deg);
    transform-origin: 0% 100%; /* 旋转中心 */
    z-index: 10;
    width: 80px; /* 调整宽度以适应斜角 */
    text-align: center;
    letter-spacing: 0.5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* 自定义 Featured 标签的样式，与图片高度匹配 */
.featured-tag.best { background-color: #FFC107; color: #333; } /* BEST 标签 */
.featured-tag.yeti { background-color: #2196F3; } /* Yeti 标签 */

/* --- 6. 侧边栏 (Drawer Menu - Image 1) --- */
.sidebar-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%; /* 移动端宽度 */
    max-width: 300px; /* PC端最大宽度 */
    height: 100%;
    background-color: var(--color-accent-pink);
    transform: translateX(100%); /* 默认隐藏 */
    transition: transform 0.3s ease-out;
    z-index: 2000;
    box-shadow: -5px 0 15px rgba(0,0,0,0.3);
    overflow-y: auto;
}
.sidebar-drawer.open {
    transform: translateX(0); /* 显示 */
}

.sidebar-header {
    display: flex;
    justify-content: flex-end; /* 关闭按钮在右侧 */
    padding: 15px;
}
.sidebar-header .close-btn {
    font-size: 30px;
    color: var(--color-text-white);
    cursor: pointer;
}

.sidebar-menu {
    padding: 10px 0;
}
.sidebar-menu a, .sidebar-menu .menu-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    color: var(--color-text-white);
    font-size: 18px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    transition: background-color 0.2s ease;
}
.sidebar-menu a:last-of-type, .sidebar-menu .menu-item:last-of-type {
    border-bottom: none;
}
.sidebar-menu a:hover, .sidebar-menu .menu-item:hover {
    background-color: rgba(0,0,0,0.1);
}
.sidebar-menu .menu-item-left { font-weight: bold; }
.sidebar-menu .item-count { font-size: 14px; opacity: 0.7; }
.sidebar-menu .active-green {
    background-color: var(--color-accent-green);
    color: var(--color-text-white);
    margin: 10px 15px;
    padding: 15px 20px;
    border-radius: 5px;
    text-align: center;
    font-size: 18px;
    font-weight: bold;
}
/* 额外菜单项与Image 1匹配 */
.sidebar-menu .extra-item {
    padding: 10px 20px;
    font-size: 16px;
    opacity: 0.9;
}

/* 遮罩层 */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1999;
    display: none;
}
.overlay.active {
    display: block;
}

/* --- 7. 底部内容/Footer (Image 2) --- */
.footer {
    background-color: var(--color-primary); /* 与内容区背景色一致 */
    padding: 30px 15px;
    color: var(--color-text-white);
    font-size: 14px;
    line-height: 1.6;
    text-align: justify;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.footer h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--color-text-white);
}
.footer p {
    margin-bottom: 15px;
}
.footer-links {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.footer-links a {
    color: var(--color-text-white);
    margin: 0 10px;
    font-size: 13px;
    text-decoration: underline;
}
.footer-links a:hover {
    opacity: 0.8;
}

/* --- 8. 响应式调整 (Mobile-First 结合桌面优化) --- */
@media (min-width: 768px) {
    .game-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); /* PC端卡片尺寸稍大 */
        gap: 12px;
        padding: 20px;
    }
    .header, .search-section, .footer {
        padding-left: 30px;
        padding-right: 30px;
    }
    .sidebar-drawer {
        max-width: 350px; /* 桌面端侧边栏最大宽度 */
    }
}

@media (min-width: 1024px) {
    .game-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); /* 更大的PC网格 */
        gap: 15px;
        padding: 25px;
    }
    /* 桌面端可以隐藏 MENU 按钮和汉堡菜单，如果需要 */
    /* .menu-btn { display: none; } */
}