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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 头部样式 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 2rem;
    color: #fff;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255,255,255,0.2);
}

/* 主要内容区域 */
main {
    margin-top: 80px;
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.search-box input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    outline: none;
    font-size: 1rem;
}

.search-box button {
    background: #667eea;
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.search-box button:hover {
    background: #5a6fd8;
}

/* 品牌统计 */
.brand-stats {
    padding: 3rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #fff;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* 品牌分类 */
.categories {
    padding: 4rem 0;
    background: white;
}

.categories h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #333;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.category-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.category-card i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.category-card h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

.category-card p {
    color: #666;
    line-height: 1.6;
}

/* 品牌列表 */
.brands-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-header h3 {
    font-size: 2rem;
    color: #333;
}

.filter-controls {
    display: flex;
    gap: 1rem;
}

.filter-controls select {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: white;
    cursor: pointer;
}

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

.brand-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.brand-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.brand-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    overflow: hidden;
    position: relative;
}

.brand-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: white;
    padding: 20px;
    transition: transform 0.3s ease;
}

.brand-logo-img:hover {
    transform: scale(1.05);
}

.brand-info {
    padding: 1.5rem;
}

.brand-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.brand-category {
    color: #667eea;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.brand-description {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.brand-contact {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.contact-btn.primary {
    background: #667eea;
    color: white;
}

.contact-btn.secondary {
    background: #f8f9fa;
    color: #333;
    border: 1px solid #ddd;
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 3px 10px rgba(0,0,0,0.2);
}

/* 搜索区域 */
.search-section {
    padding: 4rem 0;
    background: white;
}

.search-section h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #333;
}

.search-container {
    max-width: 800px;
    margin: 0 auto;
}

.search-input-group {
    display: flex;
    margin-bottom: 2rem;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.search-input-group input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    outline: none;
    font-size: 1rem;
}

.search-input-group button {
    background: #667eea;
    color: white;
    border: none;
    padding: 1rem 2rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease;
}

.search-input-group button:hover {
    background: #5a6fd8;
}

.popular-searches {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.popular-searches span {
    color: #666;
    font-weight: 500;
}

.search-tag {
    background: #f8f9fa;
    color: #667eea;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.search-tag:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.search-results {
    min-height: 200px;
}

/* 关于我们 */
.about-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.about-section h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #333;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: #555;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.feature i {
    color: #667eea;
    font-size: 1.2rem;
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: #667eea;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

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

.footer-section ul li a:hover {
    color: #667eea;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 1rem;
    top: 1rem;
}

.close:hover {
    color: #333;
}

/* 品牌详情样式 */
.brand-detail {
    margin-top: 1rem;
}

.brand-detail-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.brand-detail-logo {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    overflow: hidden;
    position: relative;
}

.brand-detail-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: white;
    padding: 15px;
    border-radius: 50%;
}

.brand-detail-info h2 {
    color: #333;
    margin-bottom: 0.5rem;
}

.brand-detail-info .category {
    color: #667eea;
    font-weight: 500;
}

.brand-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.brand-detail-section h3 {
    color: #333;
    margin-bottom: 1rem;
    border-bottom: 2px solid #667eea;
    padding-bottom: 0.5rem;
}

.contact-info {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin-top: 1rem;
}

.contact-info div {
    margin-bottom: 1rem;
}

.contact-info strong {
    color: #333;
}

.contact-info a {
    color: #667eea;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .search-box {
        flex-direction: column;
        border-radius: 10px;
    }
    
    .search-box input,
    .search-box button {
        border-radius: 0;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-controls {
        justify-content: center;
    }
    
    .brands-grid {
        grid-template-columns: 1fr;
    }
    
    .search-input-group {
        flex-direction: column;
    }
    
    .search-input-group input,
    .search-input-group button {
        border-radius: 0;
    }
    
    .brand-detail-header {
        flex-direction: column;
        text-align: center;
    }
    
    .brand-detail-content {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
}

/* Header Actions */
.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.action-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.action-btn.bookmarked {
    background: #ffd700;
    color: #333;
}

/* Share Modal Styles */
.share-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: 8px;
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.share-btn.facebook {
    background: #1877f2;
}

.share-btn.twitter {
    background: #1da1f2;
}

.share-btn.linkedin {
    background: #0077b5;
}

.share-btn.reddit {
    background: #ff4500;
}

.share-btn.pinterest {
    background: #bd081c;
}

.share-btn.copy {
    background: #6c757d;
}

/* Page Summary Styles */
.page-summary {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 3rem 0;
    border-top: 1px solid #dee2e6;
}

.summary-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.summary-content h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.summary-content p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.summary-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.summary-stats .stat {
    text-align: center;
}

.summary-stats .number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.summary-stats .label {
    color: #666;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Bookmark Animation */
@keyframes bookmarkPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.action-btn.bookmarked {
    animation: bookmarkPulse 0.6s ease-in-out;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 100px;
    right: 20px;
    background: #28a745;
    color: white;
    padding: 12px 20px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 10000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast.error {
    background: #dc3545;
}

/* Mobile Responsive Updates */
@media (max-width: 768px) {
    .header-actions {
        margin-top: 10px;
    }
    
    .share-buttons {
        grid-template-columns: 1fr;
    }
    
    .summary-stats {
        gap: 2rem;
    }
    
    .summary-stats .number {
        font-size: 2rem;
    }
}