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

:root {
    --primary-color: rgba(59, 130, 246, 0.9);
    --primary-dark: rgba(37, 99, 235, 0.9);
    --secondary-color: rgba(139, 92, 246, 0.9);
    --success-color: rgba(34, 197, 94, 0.9);
    --danger-color: rgba(239, 68, 68, 0.9);
    --warning-color: rgba(245, 158, 11, 0.9);
    --info-color: rgba(6, 182, 212, 0.9);
    --light-color: rgba(255, 255, 255, 0.1);
    --dark-color: rgba(0, 0, 0, 0.5);
    --text-color: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --blur: blur(20px);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -2;
}

.glass-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* 毛玻璃效果 */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.glass-effect:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

/* 头部样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 40px;
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 5px;
}

.nav {
    display: flex;
    gap: 20px;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 50px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav a:hover,
.nav a.active {
    background: var(--light-color);
    color: var(--text-color);
    backdrop-filter: var(--blur);
}

/* 英雄区域 */
.hero-section {
    margin-bottom: 60px;
}

.hero-content {
    text-align: center;
    margin-bottom: 40px;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* 居中排布 */
/* 紧凑统计 */
.hero-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}
.hero-content,
.hero-stats {
    flex: 1 1 250px;
}

/* 统计区内部 */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}
.stat-item {
    flex: 1 1 0;
    min-width: 100px;
    text-align: center;
}

/* 图标文字同步缩小 */
.stat-item i {
    font-size: 2rem;
}
.stat-number {
    font-size: 1.6rem;
}
.stat-label {
    font-size: 0.8rem;
}

/* 商品区域 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #fff, var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.product-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 20px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.default-product-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 4rem;
}

.discount-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--danger-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: 15px;
    flex: 1;
}

.product-features {
    margin-bottom: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.feature-item i {
    color: var(--success-color);
}

.product-price {
    margin-bottom: 20px;
}

.original-price {
    text-decoration: line-through;
    color: var(--text-secondary);
    margin-right: 10px;
}

.current-price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-right: 10px;
}

.discount-tag {
    background: var(--danger-color);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.8rem;
}

.buy-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: auto;
}

.buy-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.no-products {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.no-products i {
    margin-bottom: 20px;
}

.admin-prompt {
    display: inline-block;
    margin-top: 20px;
    color: var(--primary-color);
    text-decoration: none;
    border: 1px solid var(--primary-color);
    padding: 10px 20px;
    border-radius: 50px;
}

/* 关于区域 */
.about-section {
    margin-bottom: 60px;
}

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

.about-item {
    text-align: center;
    padding: 30px 20px;
}

.about-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.about-item p {
    color: var(--text-secondary);
}

/* 页脚 */
.footer {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-color);
}

.footer-copyright {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 购买页面样式 */
.purchase-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .purchase-container {
        grid-template-columns: 1fr;
    }
}

.purchase-header {
    margin-bottom: 30px;
}

.purchase-header h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.order-summary {
    margin-bottom: 30px;
}

.order-item {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.order-label {
    color: var(--text-secondary);
}

.order-value {
    font-weight: 600;
}

.order-no {
    font-family: monospace;
    color: var(--primary-color);
}

.price .current-price {
    font-size: 1.5rem;
}

.payment-methods {
    margin-bottom: 30px;
}

.payment-methods h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.payment-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.payment-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.payment-option:hover,
.payment-option.active {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
}

.payment-option i:first-child {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
}

.payment-option.active i:first-child {
    color: var(--primary-color);
}

.check-icon {
    position: absolute;
    top: 10px;
    right: 10px;
    color: var(--success-color);
    display: none;
}

.payment-option.active .check-icon {
    display: block;
}

.purchase-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.pay-button {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--success-color), var(--info-color));
    color: white;
    padding: 20px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pay-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.cancel-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--danger-color);
    color: white;
    padding: 20px 30px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cancel-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.security-notice {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.security-notice i {
    color: var(--success-color);
    font-size: 1.5rem;
}

.product-preview {
    height: fit-content;
}

.preview-image {
    height: 200px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
}

.preview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-info h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.preview-features {
    margin-bottom: 20px;
}

.preview-features h4 {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.preview-note {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: rgba(6, 182, 212, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.preview-note i {
    color: var(--info-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .payment-options {
        grid-template-columns: 1fr;
    }
    
    .purchase-actions {
        flex-direction: column;
    }
}

/* 分类样式 */
.categories-section {
    margin-bottom: 40px;
}

.categories-filter {
    text-align: center;
}

.categories-filter h3 {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.category-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.category-tag {
    padding: 10px 20px;
    background: var(--light-color);
    border-radius: 50px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.category-tag:hover,
.category-tag.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
}

/* 商品分类标签 */
.product-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 1;
}

/* 移动端分类优化 */
@media (max-width: 768px) {
    .category-tags {
        flex-wrap: wrap;
    }
    
    .category-tag {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}

/* 商品库存样式 */
.product-stock {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 5px;
}

.product-stock i {
    color: var(--info-color);
}

.stock-text {
    font-weight: 500;
}

/* 售罄状态的购买按钮 */
.buy-button:disabled,
.buy-button.sold-out {
    background: var(--dark-color) !important;
    cursor: not-allowed;
    opacity: 0.6;
}

.buy-button.sold-out:hover {
    transform: none !important;
    box-shadow: none !important;
}