/* ==================== 游戏中心统一样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    min-height: 100vh;
    color: #fff;
}

.hub-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 头部 */
.hub-header {
    text-align: center;
    margin-bottom: 50px;
    padding: 40px 0 20px;
}

.hub-header h1 {
    font-size: 42px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #f093fb, #f5576c, #fda085);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hub-subtitle {
    font-size: 18px;
    opacity: 0.6;
}

/* 游戏卡片网格 */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 50px;
}

/* 游戏卡片 */
.game-card {
    text-decoration: none;
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: block;
    position: relative;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--card-color, #667eea);
    transition: height 0.3s;
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border-color: var(--card-color, #667eea);
}

.game-card:hover::before {
    height: 6px;
}

.card-emoji {
    font-size: 60px;
    text-align: center;
    padding: 30px 0 10px;
    transition: transform 0.3s;
}

.game-card:hover .card-emoji {
    transform: scale(1.15);
}

.card-body {
    padding: 15px 24px 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.card-header h3 {
    font-size: 20px;
    color: #fff;
}

.card-badge {
    background: linear-gradient(135deg, #f5576c, #fda085);
    color: #fff;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 10px;
    font-weight: bold;
}

.card-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    margin-bottom: 15px;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.card-difficulty {
    font-size: 13px;
    opacity: 0.5;
}

.card-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 6px;
}

/* 空状态 */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    opacity: 0.4;
}

.empty-icon {
    font-size: 80px;
    margin-bottom: 20px;
}

/* 页脚 */
.hub-footer {
    text-align: center;
    padding: 40px 0;
    opacity: 0.4;
    font-size: 14px;
}

/* 响应式 */
@media (max-width: 680px) {
    .hub-header h1 {
        font-size: 30px;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .card-emoji {
        font-size: 48px;
        padding: 20px 0 5px;
    }
}