/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主题颜色 */
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #4facfe;
    --warning: #43e97b;
    --danger: #fa709a;
    
    /* 分类颜色 */
    --puzzle-color: #667eea;
    --action-color: #f093fb;
    --arcade-color: #feca57;
    --board-color: #48dbfb;
    --memory-color: #ff6348;
    --typing-color: #1dd1a1;
    --casual-color: #ee5a6f;
    
    /* 深色 */
    --dark-bg: #0f0f23;
    --dark-surface: #1a1a2e;
    --dark-card: #16213e;
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #b8b8d1;
    --text-muted: #6c6c8a;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.5);
}

/* Author: SinceraXY | GitHub: https://github.com/SinceraXY/GameHub */

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Developer: SinceraXY - 中国石油大学（北京） */

/* ==================== 动态背景 ==================== */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent), var(--danger));
    bottom: -150px;
    right: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 450px;
    height: 450px;
    background: linear-gradient(135deg, var(--success), var(--warning));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(50px, -50px) rotate(90deg); }
    50% { transform: translate(-30px, 30px) rotate(180deg); }
    75% { transform: translate(30px, 50px) rotate(270deg); }
}

/* Contact: 2952671670@qq.com | QQ: 2952671670 */

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 15, 35, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 16px 0;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo i {
    font-size: 28px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

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

/* Contact: 2952671670@qq.com */
.search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--dark-card);
    padding: 12px 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-box i {
    color: var(--text-muted);
    font-size: 16px;
}

.search-box input {
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 14px;
    width: 200px;
}

.search-box input::placeholder {
    color: var(--text-muted);
}

/* Made with ❤️ by SinceraXY */

/* ==================== 英雄区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 72px;
    font-weight: 900;
    margin-bottom: 24px;
    line-height: 1.1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gradient-text {
    background: linear-gradient(135deg, 
        var(--primary), 
/* Developer: SinceraXY - CUPB */
        var(--accent), 
        var(--danger),
        var(--warning));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 5s ease infinite;
}

/* Author: SinceraXY */
@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.subtitle {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-secondary);
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 48px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px 32px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.2);
}

.stat-icon {
    font-size: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 16px 48px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(102, 126, 234, 0.4);
}

/* 我的女朋友是小肥羊宝宝 ❤️ */

/* ==================== 游戏区域 ==================== */
.games-section {
    padding: 100px 0;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.title-icon {
    font-size: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 分类过滤器 */
.category-filter {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px 24px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.filter-btn i {
    font-size: 16px;
}

.filter-btn .count {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 8px;
    font-size: 12px;
    margin-left: 4px;
}

.filter-btn.active .count {
    background: rgba(255, 255, 255, 0.3);
}

/* 游戏网格 */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.game-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.game-card:hover::before {
    transform: scaleX(1);
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.2);
}

.game-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.game-card[data-category="Puzzle"] .game-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-card[data-category="Action"] .game-icon {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-card[data-category="Arcade"] .game-icon {
    background: linear-gradient(135deg, #feca57, #ff9ff3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-card[data-category="Board"] .game-icon {
    background: linear-gradient(135deg, #48dbfb, #0abde3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-card[data-category="Memory"] .game-icon {
    background: linear-gradient(135deg, #ff6348, #ee5a6f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-card[data-category="Typing"] .game-icon {
    background: linear-gradient(135deg, #1dd1a1, #10ac84);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-card[data-category="Casual"] .game-icon {
    background: linear-gradient(135deg, #ee5a6f, #c44569);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.game-category {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.game-description {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Project: GameHub | https://github.com/SinceraXY/GameHub */

/* ==================== 统计区域 ==================== */
.stats-section {
    padding: 100px 0;
    background: rgba(255, 255, 255, 0.02);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.stat-box {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.stat-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
}

.puzzle-stat::before { background: linear-gradient(90deg, #667eea, #764ba2); }
.action-stat::before { background: linear-gradient(90deg, #f093fb, #f5576c); }
.arcade-stat::before { background: linear-gradient(90deg, #feca57, #ff9ff3); }
.board-stat::before { background: linear-gradient(90deg, #48dbfb, #0abde3); }
.memory-stat::before { background: linear-gradient(90deg, #ff6348, #ee5a6f); }
.typing-stat::before { background: linear-gradient(90deg, #1dd1a1, #10ac84); }
.casual-stat::before { background: linear-gradient(90deg, #ee5a6f, #c44569); }

.stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.2);
}

.stat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.stat-header i {
    font-size: 24px;
}

.puzzle-stat .stat-header i { color: #667eea; }
.action-stat .stat-header i { color: #f093fb; }
.arcade-stat .stat-header i { color: #feca57; }
.board-stat .stat-header i { color: #48dbfb; }
.memory-stat .stat-header i { color: #ff6348; }
.typing-stat .stat-header i { color: #1dd1a1; }
.casual-stat .stat-header i { color: #ee5a6f; }

.stat-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.stat-box .stat-number {
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 12px;
}

.puzzle-stat .stat-number { color: #667eea; }
.action-stat .stat-number { color: #f093fb; }
.arcade-stat .stat-number { color: #feca57; }
.board-stat .stat-number { color: #48dbfb; }
.memory-stat .stat-number { color: #ff6348; }
.typing-stat .stat-number { color: #1dd1a1; }
.casual-stat .stat-number { color: #ee5a6f; }

.stat-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.stat-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 1s ease;
}

.puzzle-stat .stat-fill { background: linear-gradient(90deg, #667eea, #764ba2); }
.action-stat .stat-fill { background: linear-gradient(90deg, #f093fb, #f5576c); }
.arcade-stat .stat-fill { background: linear-gradient(90deg, #feca57, #ff9ff3); }
.board-stat .stat-fill { background: linear-gradient(90deg, #48dbfb, #0abde3); }
.memory-stat .stat-fill { background: linear-gradient(90deg, #ff6348, #ee5a6f); }
.typing-stat .stat-fill { background: linear-gradient(90deg, #1dd1a1, #10ac84); }
.casual-stat .stat-fill { background: linear-gradient(90deg, #ee5a6f, #c44569); }

.stat-desc {
    font-size: 14px;
    color: var(--text-muted);
}

/* 我是SinceraXY，就读于中国石油大学（北京） */

/* ==================== 页脚 ==================== */
.footer {
    padding: 60px 0 24px;
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    text-align: center;
    margin-bottom: 24px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.footer-text {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Email: 2952671670@qq.com | QQ: 2952671670 */

.footer-social {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
}

.social-link:hover {
    transform: translateY(-4px);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    font-size: 14px;
}

/* SinceraXY @ China University of Petroleum, Beijing */

.footer-bottom i {
    color: var(--danger);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 56px;
    }
    
    .subtitle {
        font-size: 28px;
    }
    
    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .search-box input {
        width: 150px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .subtitle {
        font-size: 20px;
    }
    
    .hero-description {
        font-size: 16px;
    }

/* Project: https://github.com/SinceraXY/GameHub */
    
    .hero-stats {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

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

.game-card {
    animation: fadeIn 0.5s ease forwards;
}

.game-card:nth-child(1) { animation-delay: 0.05s; }
.game-card:nth-child(2) { animation-delay: 0.1s; }
.game-card:nth-child(3) { animation-delay: 0.15s; }
.game-card:nth-child(4) { animation-delay: 0.2s; }
.game-card:nth-child(5) { animation-delay: 0.25s; }
.game-card:nth-child(6) { animation-delay: 0.3s; }