/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

/* 基础样式 */
body {
    background-color: #f0f0f0; /* 灰色背景 */
    color: #333;
    line-height: 1.6;
    padding-bottom: 50px;
}

/* 语言切换 */
.lang-switch {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 99;
}
.lang-btn {
    padding: 6px 15px;
    background: #ffcc00; /* 黄色导航系 */
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}
.lang-btn.active {
    background: #e6b800;
}
.lang-btn:hover {
    background: #ffd700;
}

/* 导航栏 */
.navbar {
    background-color: #ffcc00;
    padding: 20px 0;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 40px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* 企业介绍 */
.intro {
    max-width: 1200px;
    margin: 0 auto 50px;
    padding: 25px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.intro h2 {
    color: #ffcc00;
    margin-bottom: 15px;
    font-size: 22px;
}
.intro p {
    font-size: 16px;
    line-height: 1.8;
}

/* 产品区域（上三下二排列） */
.products {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    padding: 0 20px;
}
/* 第二行两个产品居中 */
.products .product:nth-child(4),
.products .product:nth-child(5) {
    grid-column: span 1;
    margin: 0 auto;
    width: 80%;
}
/* 移动端适配 */
@media (max-width: 768px) {
    .products {
        grid-template-columns: repeat(2, 1fr);
    }
    .products .product:nth-child(3) {
        grid-column: span 2;
        margin: 0 auto;
        width: 80%;
    }
    .products .product:nth-child(4),
    .products .product:nth-child(5) {
        grid-column: span 1;
        width: 100%;
    }
}

.product {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 3px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}
.product:hover {
    transform: translateY(-5px);
}
.product-img {
    width: 100%;
    height: 180px;
    object-fit: contain;
    margin-bottom: 15px;
    border-radius: 4px;
    background: #f8f8f8;
}
.product h3 {
    margin-bottom: 15px;
    font-size: 18px;
}
.amount-options {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 15px 0;
}
.amount-btn {
    padding: 8px 20px;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}
.amount-btn.active {
    background: #ffcc00;
    border-color: #ffcc00;
    font-weight: bold;
}
.price-box {
    margin: 10px 0;
    font-size: 16px;
    color: #e53935;
    font-weight: bold;
}
.buy-btn {
    width: 100%;
    padding: 12px;
    background: #ffcc00;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    margin-top: 10px;
}
.buy-btn:hover {
    background: #e6b800;
}

/* 支付页面 */
.payment-wrap {
    max-width: 1000px;
    margin: 50px auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    padding: 0 20px;
}
.payment-form {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.payment-summary {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    font-size: 14px;
}
.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}
.address-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 15px;
}
.pay-btn {
    width: 100%;
    padding: 15px;
    background: #ffcc00;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    margin-top: 10px;
}
.summary-item {
    display: flex;
    justify-content: space-between;
    margin: 15px 0;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    font-size: 16px;
}
.summary-item strong {
    color: #333;
}
.summary-price {
    color: #e53935;
    font-weight: bold;
}

/* 成功页面 */
.success-box {
    max-width: 600px;
    margin: 80px auto;
    padding: 40px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
}
.success-box h2 {
    color: #4caf50;
    margin-bottom: 20px;
    font-size: 24px;
}
.order-info {
    margin: 25px 0;
    padding: 20px;
    background: #f8f8f8;
    border-radius: 4px;
    text-align: left;
}
.order-info p {
    margin: 8px 0;
    font-size: 16px;
}
.back-btn {
    padding: 12px 30px;
    background: #ffcc00;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
}

/* 后台样式 */
.admin-login {
    max-width: 400px;
    margin: 80px auto;
    padding: 40px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.admin-login h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #ffcc00;
}
.admin-dashboard {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 20px;
    display: none;
}
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.export-btn, .logout-btn {
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}
.export-btn {
    background: #ffcc00;
    margin-right: 10px;
}
.logout-btn {
    background: #e53935;
    color: #fff;
}
/* 后台表格 - 展示完整字段 */
.orders-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.orders-table th, .orders-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}
.orders-table th {
    background: #ffcc00;
    font-weight: bold;
}
/* 表格响应式 */
@media (max-width: 1200px) {
    .orders-table {
        display: block;
        overflow-x: auto;
    }
}
.action-btn {
    padding: 5px 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 5px;
}
.copy-btn {
    background: #2196f3;
    color: #fff;
}
.delete-btn {
    background: #e53935;
    color: #fff;
}
.empty-tip {
    text-align: center;
    padding: 50px;
    color: #999;
    font-size: 18px;
}