/* 底盘定制资源网站样式表 */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #475569;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --light-color: #f8fafc;
    --dark-color: #1e293b;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --border-radius: 8px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--light-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 头部样式 */
.header {
    background-color: white;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--gray-200);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 0.125rem;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.nav a:hover {
    color: var(--primary-color);
    background-color: var(--gray-100);
}

.nav a.active {
    color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.1);
}

/* 主要内容区域 */
main {
    flex: 1;
    padding: 2rem 0 4rem;
}

/* 英雄区域 */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
    padding: 2rem 0;
}

.hero-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: rgba(37, 99, 235, 0.1);
}

.btn-block {
    width: 100%;
}

/* 分类卡片 */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.resource-categories {
    margin-bottom: 4rem;
}

.category-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.category-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.card-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background-color: rgba(37, 99, 235, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.category-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.category-card p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.card-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem 0;
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
}

.card-stats span {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card-stats strong {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.card-stats span:last-child strong {
    color: var(--success-color);
}

/* 搜索区域 */
.search-section {
    margin-bottom: 4rem;
}

.search-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 1rem;
    color: var(--gray-800);
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-results {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.search-results h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.results-placeholder {
    background-color: var(--gray-100);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.results-placeholder code {
    background-color: var(--gray-200);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
}

.results-table-container {
    overflow-x: auto;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.results-table thead {
    background-color: var(--gray-100);
}

.results-table th {
    text-align: left;
    padding: 1rem;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-300);
}

.results-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.results-table tbody tr:hover {
    background-color: var(--gray-50);
}

.results-table .btn-action {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    background-color: var(--gray-100);
    color: var(--gray-700);
    border-radius: 4px;
    text-decoration: none;
    display: inline-block;
}

.results-table .btn-action:hover {
    background-color: var(--gray-200);
}

/* 功能区域 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all 0.2s ease;
}

.feature:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background-color: rgba(37, 99, 235, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.feature h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.feature p {
    color: var(--gray-600);
}

/* 页脚 */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: 3rem 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
}

.footer-logo i {
    color: var(--primary-color);
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-copyright {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.75rem;
    }
    
    .hero {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .category-cards {
        grid-template-columns: 1fr;
    }
    
    .search-card {
        padding: 1.5rem;
    }
}

/* 分类页面样式 */
.category-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 3rem 0;
    margin-bottom: 3rem;
    border-radius: var(--border-radius);
}

.category-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.category-header p {
    font-size: 1.125rem;
    opacity: 0.9;
}

.product-list {
    display: grid;
    gap: 1.5rem;
}

.product-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: all 0.2s ease;
}

.product-image-container {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    margin: -1.5rem -1.5rem 1.5rem -1.5rem;
    background-color: var(--gray-100);
}

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

.product-card:hover .product-thumbnail {
    transform: scale(1.05);
}
.product-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.product-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.product-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.product-meta span {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.product-specs {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.product-specs h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.75rem;
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    font-size: 0.875rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--gray-200);
}

.spec-label {
    color: var(--gray-600);
}

.spec-value {
    color: var(--gray-800);
    font-weight: 500;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    color: var(--gray-600);
    text-decoration: none;
}

.back-link:hover {
    color: var(--primary-color);
}
/* 类别徽章样式 */
.category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    text-align: center;
    white-space: nowrap;
    background-color: var(--gray-200);
    color: var(--gray-700);
}

.category-line-control {
    background-color: #dbeafe;
    color: #1e40af;
}

.category-sweeper {
    background-color: #dcfce7;
    color: #166534;
}

.category-seller {
    background-color: #fef3c7;
    color: #92400e;
}

/* 标签样式 */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.625rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.3;
}

.tag-primary {
    background-color: var(--primary-color);
    color: white;
}

.tag-success {
    background-color: var(--success-color);
    color: white;
}

/* 加载状态样式 */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--gray-600);
}

.loading-spinner i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.loading-spinner p {
    font-size: 0.95rem;
}

/* 错误消息样式 */
.error-message {
    text-align: center;
    padding: 2rem;
    color: var(--gray-700);
}

.error-message i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--danger-color);
}

.error-message h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

/* 无结果样式 */
.no-results {
    text-align: center;
    padding: 2rem;
    color: var(--gray-600);
}

.no-results i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--gray-400);
}

/* 无产品消息 */
.no-products-message {
    text-align: center;
    padding: 2rem;
}

.no-products-message i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--gray-400);
}

.no-products-message h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--gray-700);
}

.no-products-message p {
    margin-bottom: 1.5rem;
    color: var(--gray-600);
}

/* 产品卡片改进样式 */
.product-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.product-tags {
    display: flex;
    gap: 0.5rem;
}

.product-card-footer {
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
    text-align: right;
}

/* 画廊页面样式 */
.gallery-controls {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.filter-group {
    flex: 1;
}

.filter-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
}

.filter-group select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    background-color: white;
    font-size: 0.875rem;
    color: var(--gray-800);
    transition: border-color 0.2s ease;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.gallery-stats {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    color: var(--gray-700);
}

.gallery-container {
    margin-bottom: 2rem;
}

.loading-spinner {
    text-align: center;
    padding: 3rem;
    color: var(--gray-500);
}

.loading-spinner i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.no-images, .no-data, .error {
    text-align: center;
    padding: 3rem;
    color: var(--gray-500);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.gallery-instructions {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.gallery-instructions h3 {
    margin-bottom: 1rem;
    color: var(--gray-800);
}

.gallery-instructions ul {
    list-style: none;
    padding-left: 0;
}

.gallery-instructions li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--gray-700);
}

.gallery-instructions li:before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

kbd {
    background-color: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 0.125rem 0.375rem;
    font-size: 0.875rem;
    font-family: var(--font-family);
    color: var(--gray-800);
}