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

/* 阳光风格渐变背景 */
body {
    min-height: 100vh;
    background: linear-gradient(135deg, #ffd700, #ffa500, #ff8c00);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
    position: relative;
}

/* 主容器 */
.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* 标题区域 */
.header {
    text-align: center;
    margin-bottom: 30px;
    animation: fadeInDown 1s ease-out;
}



.main-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
    text-shadow: 3px 3px 0 #000, -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000;
    margin-bottom: 10px;
    animation: pulse 2s infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.sub-title {
    font-size: 1.2rem;
    color: rgba(51, 51, 51, 0.8);
    font-weight: 300;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 游戏卡片网格 */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 800px;
    width: 100%;
}

/* 游戏卡片 */
.game-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    padding: 25px 20px;
    text-align: center;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out;
    animation-fill-mode: both;
}

.game-card:nth-child(1) {
    animation-delay: 0.2s;
}

.game-card:nth-child(2) {
    animation-delay: 0.4s;
}

/* 卡片 */
.join {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-align: center;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out;
    animation-fill-mode: both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.game-card:hover::before {
    left: 100%;
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 165, 0, 0.4);
    border-color: rgba(255, 165, 0, 0.7);
}

/* 游戏图标 */
.game-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #ff9a00, #ff6a00, #ff9a00);
    box-shadow: 0 8px 20px rgba(255, 154, 0, 0.4);
}

.snake-icon {
    background: linear-gradient(135deg, #ff9a00, #ff6a00, #ff9a00);
}

.shooting-icon {
    background: linear-gradient(135deg, #4facfe, #00f2fe, #4facfe);
}

/* 游戏标题 */
.game-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.game-subtitle {
    font-size: 1rem;
    color: rgba(51, 51, 51, 0.8);
    font-weight: 300;
}

/* 添加反馈按钮样式 */
.feedback-button {
    position: fixed;
    top: 30px;
    right: 20px;
    width: 120px;
    height: 60px;
    border-radius: 25px;
    background: rgba(255, 215, 0, 0.9);
    color: #fff;
    font-size: 1rem;
    font-weight: bold;
    border: none;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
    z-index: 1001;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feedback-button:hover {
    background: rgba(255, 165, 0, 1);
    transform: scale(1.1);
}

.feedback-panel {
    position: fixed;
    top: 90px;
    right: 20px;
    width: 400px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    z-index: 1000;
    display: none;
}

/* 加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ffd700, #ffa500, #ff8c00);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #ff8c00;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-title {
        font-size: 2rem;
    }
    
    .sub-title {
        font-size: 1rem;
    }
    
    .game-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .game-card {
        padding: 30px 20px;
    }
    
    .game-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .game-title {
        font-size: 1.3rem;
    }
}

/* 首页功能卡片区域 */
.features-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 800px;
    width: 100%;
}

.feature-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    padding: 30px 20px;
    text-align: center;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out;
    animation-fill-mode: both;
}

.feature-card:nth-child(1) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(2) {
    animation-delay: 0.4s;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 165, 0, 0.4);
    border-color: rgba(255, 165, 0, 0.7);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #ff9a00, #ff6a00, #ff9a00);
    box-shadow: 0 8px 20px rgba(255, 154, 0, 0.4);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.feature-subtitle {
    font-size: 1rem;
    color: rgba(51, 51, 51, 0.8);
    font-weight: 300;
}

/* 水印样式 */
.watermark {
    position: fixed;
    bottom: 10px;
    right: 10px;
    font-size: 0.8rem;
    color: #8b0000;
    z-index: 1000;
    pointer-events: none;
    background: rgba(255, 215, 0, 0.7);
    padding: 5px 10px;
    border-radius: 5px;
    border: 1px solid #ff0000;
}