/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #f39c12;
    --secondary-dark: #e67e22;
    --text-color: #2c3e50;
    --light-text: #7f8c8d;
    --background: #f9f9f9;
    --card-bg: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --border-radius: 15px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

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

/* 排版 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
}

p {
    margin-bottom: 15px;
}

a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #2980b9;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 18px;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:hover::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.primary-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
    color: white;
}

.game-btn {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.3);
    padding: 10px 20px;
    font-size: 16px;
}

.game-btn:hover {
    background: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(243, 156, 18, 0.4);
    color: white;
}

/* 头部 */
.site-header {
    background-color: var(--card-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 28px;
    margin-bottom: 0;
    color: var(--text-color);
    font-weight: 700;
}

.tagline {
    font-size: 16px;
    color: var(--light-text);
    margin-bottom: 0;
}

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

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    position: relative;
    color: var(--text-color);
    font-weight: 600;
    padding: 8px 0;
    transition: var(--transition);
}

.main-nav a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.main-nav a:hover:after,
.main-nav a.active:after {
    width: 100%;
}

/* 英雄区 */
.hero {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    color: white;
    padding: 100px 0;
    text-align: center;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    margin-bottom: 60px;
}

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

.hero-content h2 {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-content p {
    font-size: 22px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 游戏部分 */
.games-section {
    padding: 60px 0;
}

.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-color);
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    margin: 15px auto 0;
    border-radius: 2px;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.game-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    transform: translateY(0);
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.game-thumbnail {
    height: 180px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.game-icon {
    font-size: 64px;
}

.game-info {
    padding: 25px;
}

.game-info h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-color);
    font-weight: 700;
}

.game-info p {
    color: var(--light-text);
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.6;
}

.game-meta {
    display: flex;
    margin-bottom: 20px;
    font-size: 14px;
}

.age-range, .difficulty, .coming-soon-label {
    background-color: #f1f1f1;
    padding: 5px 10px;
    border-radius: 20px;
    margin-right: 10px;
    color: #34495e;
}

.coming-soon-label {
    background-color: #e74c3c;
    color: white;
}

.coming-soon .game-info {
    opacity: 0.7;
}

/* 关于部分 */
.about-section {
    padding: 80px 0;
    background-color: #f5f9fc;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 18px;
    color: #34495e;
}

/* 页脚 */
.site-footer {
    background-color: var(--text-color);
    color: white;
    padding: 40px 0;
    text-align: center;
    margin-top: 60px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        text-align: center;
    }
    
    .main-nav {
        margin-top: 15px;
    }
    
    .main-nav ul {
        justify-content: center;
    }
    
    .main-nav li {
        margin: 0 15px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-content h2 {
        font-size: 32px;
    }
    
    .hero-content p {
        font-size: 18px;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .main-nav li {
        margin: 0 10px;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    .hero-content h2 {
        font-size: 28px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 16px;
    }
    
    .game-info h3 {
        font-size: 20px;
    }
}

/* 添加平滑滚动效果 */
html {
    scroll-behavior: smooth;
}

/* 添加加载动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-title,
.game-card,
.about-content {
    animation: fadeIn 0.8s ease-out forwards;
}

.game-card:nth-child(2) {
    animation-delay: 0.2s;
}

/* 添加悬停效果 */
.game-meta span {
    transition: var(--transition);
}

.game-meta span:hover {
    transform: scale(1.05);
}