/* 基础样式 */
:root {
    --background-color: #f5f5f5;
    --card-color: #ffffff;
    --primary-color: #0078f2;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #dddddd;
    --hover-color: #f0f0f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: var(--card-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--primary-color);
}

.user-actions {
    display: flex;
    align-items: center;
}

.btn {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
    font-weight: 500;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #0066cc;
}

/* 英雄区域 */
.hero {
    padding: 40px 0;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 32px;
    margin-bottom: 15px;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

/* 游戏展示区 */
.game-showcase {
    padding: 30px 0;
}

.section-title {
    font-size: 24px;
    margin-bottom: 20px;
    font-weight: 600;
}

.featured-game {
    background-color: var(--card-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

.game-frame {
    width: 100%;
    height: 600px;
    border: none;
}

.game-info {
    padding: 20px;
}

.game-title {
    font-size: 22px;
    margin-bottom: 10px;
}

.game-description {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.game-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tag {
    background-color: var(--background-color);
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 14px;
}

/* 热门游戏区块 */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.game-card {
    background-color: var(--card-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.game-card-img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.game-card-info {
    padding: 15px;
}

.game-card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.game-card-category {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 页脚 */
footer {
    background-color: var(--card-color);
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    margin-top: 50px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-column {
    margin-bottom: 20px;
    min-width: 200px;
}

.footer-column h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 8px;
}

.copyright {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
    }
    
    nav ul li {
        margin-left: 0;
        margin-right: 15px;
        margin-bottom: 5px;
    }
    
    .user-actions {
        margin-top: 15px;
    }
    
    .game-frame {
        height: 400px;
    }
    
    .footer-content {
        flex-direction: column;
    }
}