/* 全局样式 */
* {
    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;
}

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

/* 头部样式 */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
}

.main-title {
    color: #fff;
    font-size: 2.5rem;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

/* 产品列表 */
.products {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.product-card {
    background: #fff;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0,0,0,0.2);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.product-type {
    font-size: 1.3rem;
    color: #333;
    font-weight: 600;
}

.price {
    font-size: 1.5rem;
    color: #e74c3c;
    font-weight: 700;
}

.product-tags {
    margin-bottom: 12px;
}

.tag {
    display: inline-block;
    padding: 5px 12px;
    background: #e3f2fd;
    color: #1976d2;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.tag.warning {
    background: #ffebee;
    color: #c62828;
}

.product-desc {
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.feature {
    padding: 4px 10px;
    background: #f5f5f5;
    color: #666;
    border-radius: 12px;
    font-size: 0.8rem;
}

.feature.highlight {
    background: #667eea;
    color: #fff;
}

.feature.warning {
    background: #ef5350;
    color: #fff;
}

.buy-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.buy-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

/* 底部标语 */
.slogan {
    text-align: center;
    color: #fff;
    padding: 40px 20px;
}

.quote {
    font-size: 1.2rem;
    font-style: italic;
    margin-bottom: 15px;
    line-height: 1.8;
}

.gift {
    font-size: 1rem;
    opacity: 0.9;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: #333;
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #333;
    text-align: center;
}

.order-info {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.order-info p {
    margin: 5px 0;
    color: #666;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #07c160 0%, #05a050 100%);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 20px rgba(7, 193, 96, 0.4);
}

/* 支付弹窗 */
.payment-content {
    text-align: center;
    max-width: 400px;
}

.payment-info {
    margin: 20px 0;
}

.payment-amount {
    font-size: 2.5rem;
    color: #e74c3c;
    font-weight: 700;
}

.payment-tip {
    color: #666;
    margin-top: 10px;
}

.qrcode-container {
    margin: 25px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.qrcode {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #ddd;
}

.qrcode img {
    max-width: 100%;
    max-height: 100%;
}

.qrcode-placeholder {
    color: #999;
    font-size: 0.9rem;
    text-align: center;
    padding: 20px;
}

.qrcode-tip {
    margin-top: 15px;
    color: #999;
    font-size: 0.85rem;
}

.payment-status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    font-weight: 500;
}

.payment-status.success {
    background: #d4edda;
    color: #155724;
}

.payment-status.pending {
    background: #fff3cd;
    color: #856404;
}

.payment-status.error {
    background: #f8d7da;
    color: #721c24;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-title {
        font-size: 1.8rem;
    }
    
    .products {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        padding: 20px;
    }
    
    .modal-content {
        width: 95%;
        padding: 20px;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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