/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 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);
    --transition: all 0.3s ease;
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

/* 头部样式 */
header {
    background-color: var(--card-bg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo img {
    height: 40px;
    width: auto;
}

nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.lang-switch {
    display: flex;
    gap: 8px;
    align-items: center;
}

.lang-btn {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    background-color: transparent;
    color: var(--text-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
}

.lang-btn.active,
.lang-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.auth-buttons {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 8px 16px;
    border-radius: var(--radius);
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

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

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

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

/* 主内容样式 */
main {
    min-height: calc(100vh - 160px);
    padding: 40px 0;
}

.hero {
    text-align: center;
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-color);
    line-height: 1.2;
}

.hero p {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 720px;
    margin: 0 auto 32px;
}

/* 搜索框样式 */
.search-container {
    max-width: 600px;
    margin: 0 auto 40px;
    position: relative;
}

.search-form {
    display: flex;
    gap: 12px;
    align-items: stretch;
}

.search-input {
    flex: 1;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: var(--transition);
}

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

.search-btn {
    padding: 16px 32px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.search-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* 服务分类样式 */
.services-section {
    margin-top: 40px;
}

.service-category {
    margin-bottom: 40px;
}

.category-header {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.category-header::before {
    content: '';
    width: 40px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.category-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.service-card {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-color);
}

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

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.service-card p {
    color: var(--text-light);
    font-size: 0.9375rem;
}

/* 搜索结果样式 */
.search-results {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    max-height: 300px;
    overflow-y: auto;
    margin-top: 8px;
}

.search-results.show {
    display: block;
}

.search-result-item {
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-color);
    display: block;
}

.search-result-item:hover {
    background-color: #f1f5f9;
}

.search-result-item:last-child {
    border-bottom: none;
}

.result-category {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.875rem;
}

.result-name {
    font-size: 0.9375rem;
}

.no-results {
    padding: 20px;
    text-align: center;
    color: var(--text-light);
}

/* 服务详情页面样式 */
.service-detail {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 40px;
}

.service-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.service-detail h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.service-breadcrumb {
    color: var(--text-light);
    font-size: 0.875rem;
}

.service-breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.service-breadcrumb a:hover {
    text-decoration: underline;
}

.service-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 32px;
}

.service-details-content {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-color);
    margin-bottom: 32px;
}

.contact-business-btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.contact-business-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 账号页面样式 */
.auth-page {
    max-width: 400px;
    margin: 0 auto;
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 40px;
}

.auth-page h2 {
    text-align: center;
    margin-bottom: 24px;
    color: var(--text-color);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-color);
}

.form-group input {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

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

.auth-submit {
    margin-top: 8px;
    padding: 12px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.auth-submit:hover {
    background-color: var(--primary-hover);
}

.auth-link {
    text-align: center;
    margin-top: 16px;
}

.auth-link a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

/* 页脚样式 */
footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-link {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-color);
}

.footer-copyright {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 16px;
    width: 100%;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 16px;
        padding: 12px 0;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .search-form {
        flex-direction: column;
    }

    .search-btn {
        width: 100%;
    }

    .category-items {
        grid-template-columns: 1fr;
    }

    .service-detail {
        padding: 24px;
    }

    .service-detail-header {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .auth-page {
        padding: 24px;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .search-input,
    .search-btn {
        padding: 12px 16px;
        font-size: 0.875rem;
    }

    .service-card {
        padding: 16px;
    }

    .service-detail h1 {
        font-size: 1.5rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card {
    animation: fadeIn 0.3s ease-out;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }

/* 滚动效果 */
.scroll-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
    box-shadow: var(--shadow);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--primary-hover);
    transform: translateY(-3px);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 错误页面样式 */
.error-page {
    text-align: center;
    padding: 60px 0;
}

.error-page h1 {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.error-page p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 32px;
}

/* 工具提示样式 */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-color);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    margin-bottom: 8px;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #3b82f6;
        --primary-hover: #2563eb;
        --secondary-color: #94a3b8;
        --text-color: #f1f5f9;
        --text-light: #94a3b8;
        --bg-color: #0f172a;
        --card-bg: #1e293b;
        --border-color: #334155;
    }
}