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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.home-page .user-actions {
  display: none;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #45a049;
}

.btn.outline {
    background-color: transparent;
    border: 1px solid #4CAF50;
    color: #4CAF50;
}

.btn.outline:hover {
    background-color: #f5f5f5;
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #4CAF50;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #4CAF50;
}

.user-actions a {
    margin-left: 15px;
    text-decoration: none;
    color: #333;
}

.user-actions a:hover {
    color: #4CAF50;
}

#cart-icon {
    position: relative;
}

#cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background-color: #e74c3c;
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 轮播图样式 */
.banner {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/banner.jpg');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0;
    text-align: center;
}

.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.banner p {
    font-size: 20px;
    margin-bottom: 30px;
}

/* 产品展示样式 */
.products {
    padding: 50px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: #333;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 20px;
}

.product-name {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
}

.product-price {
    color: #e74c3c;
    font-size: 20px;
    font-weight: bold;
    margin: 10px 0;
}

.product-stock {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
}

.add-to-cart {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.add-to-cart:hover {
    background-color: #45a049;
}

/* 购物车侧边栏 */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100%;
    background-color: white;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transition: right 0.3s;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.cart-sidebar.active {
    right: 0;
}

.cart-header {
    padding: 20px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-cart {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.cart-item {
    display: flex;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.cart-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    margin-right: 15px;
}

.cart-item-details {
    flex: 1;
}

.cart-item-name {
    font-weight: bold;
    margin-bottom: 5px;
}

.cart-item-price {
    color: #e74c3c;
    margin-bottom: 5px;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
}

.quantity-btn {
    width: 25px;
    height: 25px;
    background-color: #f5f5f5;
    border: none;
    cursor: pointer;
}

.quantity-input {
    width: 40px;
    text-align: center;
    margin: 0 5px;
}

.remove-item {
    color: #e74c3c;
    cursor: pointer;
    font-size: 14px;
}

.cart-footer {
    padding: 20px;
    border-top: 1px solid #eee;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 18px;
}

.grand-total {
    font-weight: bold;
    font-size: 20px;
}

.checkout-btn {
    width: 100%;
    text-align: center;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 20px;
    font-size: 18px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
}

/* 支付页面样式 */
.checkout-steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    position: relative;
}

.checkout-steps::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: #eee;
    z-index: -1;
}

.step {
    text-align: center;
    position: relative;
    flex: 1;
    padding-bottom: 20px;
}

.step::before {
    content: '';
    display: block;
    width: 30px;
    height: 30px;
    background-color: #eee;
    border-radius: 50%;
    margin: 0 auto 10px;
    line-height: 30px;
    color: #999;
}

.step:nth-child(1)::before {
    content: '1';
}

.step:nth-child(2)::before {
    content: '2';
}

.step:nth-child(3)::before {
    content: '3';
}

.step.active {
    color: #4CAF50;
}

.step.active::before {
    background-color: #4CAF50;
    color: white;
}

.checkout-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.order-summary, .payment-methods {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.order-summary h3, .payment-methods h3 {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.order-item {
    display: flex;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.order-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    margin-right: 15px;
}

.order-item-details {
    flex: 1;
}

.order-item-name {
    font-weight: bold;
    margin-bottom: 5px;
}

.order-item-price {
    color: #e74c3c;
}

.order-item-quantity {
    color: #666;
}

.order-total {
    margin-top: 20px;
}

.total-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.grand-total {
    font-size: 20px;
    padding-top: 10px;
    border-top: 1px solid #eee;
}

.payment-method {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 15px;
    border: 1px solid #eee;
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.3s;
}

.payment-method:hover {
    border-color: #4CAF50;
}

.payment-method.active {
    border-color: #4CAF50;
    background-color: #f9f9f9;
}

.payment-method img {
    height: 30px;
    margin-right: 15px;
}

#confirm-payment {
    width: 100%;
    margin-top: 20px;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: white;
    border-radius: 8px;
    width: 500px;
    max-width: 90%;
    overflow: hidden;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-modal {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.modal-body {
    padding: 30px;
    text-align: center;
}

.success-icon {
    font-size: 60px;
    color: #4CAF50;
    margin-bottom: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
    }
    
    nav ul {
        margin: 15px 0;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .checkout-content {
        grid-template-columns: 1fr;
    }
    
    .cart-sidebar {
        width: 100%;
    }
}