/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航栏 */
header {
    background-color: #2c3e50;
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #3498db;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.main-nav {
    display: flex;
}

.main-nav li {
    margin-left: 20px;
}

.main-nav a {
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    background-color: #3498db;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 英雄区域 */
.hero {
    padding: 40px 0;
    background-image: linear-gradient(135deg, #3498db, #8e44ad);
    color: white;
}

.search-bar {
    display: flex;
    max-width: 600px;
    margin: 0 auto 30px;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.search-bar input {
    flex: 1;
    padding: 15px 20px;
    border: none;
    font-size: 1rem;
}

.search-bar button {
    background-color: #2ecc71;
    color: white;
    border: none;
    padding: 0 25px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-bar button:hover {
    background-color: #27ae60;
}

.categories {
    margin-top: 20px;
}

.categories ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.categories li {
    margin: 5px;
}

.categories a {
    display: block;
    padding: 8px 15px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.categories a:hover,
.categories a.active {
    background-color: white;
    color: #3498db;
}

/* 主要内容区 */
main {
    padding: 40px 0;
}

main section {
    margin-bottom: 40px;
}

main h2 {
    position: relative;
    font-size: 1.8rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
    color: #2c3e50;
}

main h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: #3498db;
}

/* 游戏卡片网格 */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

.game-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

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

.game-info {
    padding: 15px;
}

.game-info h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: #2c3e50;
}

.game-info p {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 4.2em;
}

.play-btn {
    display: inline-block;
    padding: 8px 15px;
    background-color: #3498db;
    color: white;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

.play-btn:hover {
    background-color: #2980b9;
}

/* 页脚 */
footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 30px;
}

.footer-logo h2 {
    color: #3498db;
    margin-bottom: 10px;
}

.footer-links ul {
    display: flex;
    flex-wrap: wrap;
}

.footer-links li {
    margin-right: 20px;
    margin-bottom: 10px;
}

.footer-links a:hover {
    color: #3498db;
}

.social-media a {
    display: inline-block;
    margin-right: 15px;
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-media a:hover {
    color: #3498db;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: #bdc3c7;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: #2c3e50;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    .main-nav.active {
        display: flex;
    }

    .main-nav li {
        margin: 10px 0;
        text-align: center;
    }

    .mobile-menu-btn {
        display: block;
    }

    .footer-content > div {
        width: 100%;
        margin-bottom: 20px;
        text-align: center;
    }

    .footer-links ul {
        justify-content: center;
    }

    .categories ul {
        justify-content: center;
    }

    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media screen and (max-width: 480px) {
    .search-bar {
        flex-direction: column;
        border-radius: 8px;
    }

    .search-bar input {
        width: 100%;
        border-radius: 8px 8px 0 0;
    }

    .search-bar button {
        width: 100%;
        padding: 10px;
        border-radius: 0 0 8px 8px;
    }

    .games-grid {
        grid-template-columns: 1fr;
    }
}