/* 二维码展示网页样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out;
}

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

/* 头部样式 */
.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 二维码画廊样式 */
.gallery {
    padding: 40px 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    justify-items: center;
}

.qr-card {
    width: 100%;
    max-width: 350px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.qr-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.qr-container {
    position: relative;
    width: 100%;
    height: 350px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
}

.qr-image {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 10px;
    transition: transform 0.3s ease;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

.qr-card:hover .qr-image {
    transform: scale(1.05);
}

.qr-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.qr-card:hover .qr-overlay {
    transform: translateY(0);
}

.qr-overlay h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.qr-overlay p {
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.4;
}

/* 二维码识别提示 */
.qr-card::before {
    content: '长按识别';
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.qr-card:hover::before {
    opacity: 1;
}

/* 底部样式 */
.footer {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    color: #666;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        border-radius: 15px;
    }
    
    .header {
        padding: 30px 15px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .gallery {
        padding: 30px 15px;
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .qr-container {
        height: 300px;
    }
    
    .qr-overlay {
        padding: 25px 15px 15px;
    }
    
    .qr-overlay h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    .gallery {
        padding: 20px 10px;
    }
    
    .qr-container {
        height: 250px;
    }
    
    .qr-overlay {
        padding: 20px 15px 15px;
    }
    
    .qr-overlay h3 {
        font-size: 1.1rem;
    }
}

/* 加载动画 */
.qr-image {
    opacity: 0;
    animation: qrLoad 0.6s ease-out forwards;
}

.qr-image:nth-child(1) {
    animation-delay: 0.2s;
}

.qr-image:nth-child(2) {
    animation-delay: 0.4s;
}

@keyframes qrLoad {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}