/* 全局样式 */
:root {
    --primary: #007bff;
    --primary-dark: #0056b3;
    --secondary: #6c757d;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    --light: #f8f9fa;
    --dark: #343a40;
    --bg: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --border: #dee2e6;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --radius: 12px;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg: #1a1a2e;
    --text: #e0e0e0;
    --text-light: #a0a0a0;
    --border: #2d2d44;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
    --light: #2d2d44;
    --dark: #f8f9fa;
}

/* 模板主题 */
[data-template="tech"] {
    --primary: #00d2ff;
    --primary-dark: #0099cc;
    --radius: 4px;
}

[data-template="fashion"] {
    --primary: #e83e8c;
    --primary-dark: #c2185b;
    --radius: 20px;
}

[data-template="food"] {
    --primary: #ff6f00;
    --primary-dark: #e65100;
    --radius: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: var(--transition);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg);
    box-shadow: var(--shadow);
    padding: 10px 0;
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

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

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

.nav-links a {
    color: var(--text);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius);
    transition: var(--transition);
    font-weight: 500;
}

.nav-links a:hover {
    background: var(--primary);
    color: #fff;
}

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

.theme-toggle,
.template-toggle,
.hamburger {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-toggle:hover,
.template-toggle:hover,
.hamburger:hover {
    background: var(--light);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* 英雄区域 */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 15px;
}

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

.hero-image img:hover {
    transform: scale(1.02);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border-color: #fff;
}

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.9rem;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.btn-danger:hover {
    background: #c82333;
}

/* 搜索与筛选 */
.search-filter {
    padding: 40px 0;
    background: var(--light);
}

.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}

.search-box i {
    font-size: 1.2rem;
    color: var(--text-light);
}

.search-box input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--bg);
    color: var(--text);
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,123,255,0.1);
}

.filter-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-options select {
    padding: 10px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--text);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-options select:focus {
    outline: none;
    border-color: var(--primary);
}

/* 服务展示 */
.services {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--text);
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

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

.service-card {
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.card-tags {
    position: absolute;
    top: 10px;
    left: 10px;
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.tag {
    background: var(--primary);
    color: #fff;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.card-content {
    padding: 20px;
}

.card-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text);
}

.card-content p {
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.6;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
}

.rating {
    color: var(--warning);
    font-weight: 500;
}

.no-results {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 20px;
}

/* 客户评价 */
.testimonials {
    padding: 80px 0;
    background: var(--light);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-3px);
}

.testimonial-content {
    margin-bottom: 20px;
}

.testimonial-content i {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 10px;
    display: block;
}

.testimonial-content p {
    font-style: italic;
    color: var(--text);
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.testimonial-author span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 团队介绍 */
.team {
    padding: 80px 0;
}

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

.team-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-5px);
}

.team-card img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid var(--primary);
}

.team-card h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.team-card p {
    color: var(--text-light);
    margin-bottom: 15px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.social-links a {
    color: var(--text-light);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary);
}

/* 页脚 */
.footer {
    background: var(--dark);
    color: #fff;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

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

.footer-about p {
    opacity: 0.8;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    color: #fff;
    font-size: 1.5rem;
    opacity: 0.7;
    transition: var(--transition);
}

.footer-social a:hover {
    opacity: 1;
    color: var(--primary);
}

.footer-links h4,
.footer-contact h4,
.footer-newsletter h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    padding: 5px 0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    opacity: 0.8;
}

.footer-newsletter form {
    display: flex;
    gap: 10px;
}

.footer-newsletter input {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.footer-newsletter input::placeholder {
    color: rgba(255,255,255,0.5);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

.footer-bottom a {
    color: var(--primary);
    text-decoration: none;
}

/* 回到顶部 */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: none;
    z-index: 999;
}

#backToTop:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* 管理后台样式 */
.admin-login {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.login-card {
    background: var(--bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary);
}

.login-card h2 i {
    margin-right: 10px;
}

.error-msg {
    color: var(--danger);
    margin-bottom: 15px;
    text-align: center;
}

.back-link {
    text-align: center;
    margin-top: 20px;
}

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

.admin-panel {
    display: flex;
    min-height: 100vh;
}

.admin-nav {
    width: 250px;
    background: var(--dark);
    color: #fff;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.admin-nav-header h2 {
    font-size: 1.3rem;
    margin-bottom: 30px;
}

.admin-nav-header h2 i {
    margin-right: 10px;
}

.admin-nav-links {
    list-style: none;
    flex: 1;
}

.admin-nav-links li {
    margin-bottom: 5px;
}

.admin-nav-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    padding: 10px 15px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.admin-nav-links a:hover,
.admin-nav-links a.active {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.logout-form {
    margin-top: auto;
}

.logout-form button {
    width: 100%;
}

.admin-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
    background: var(--light);
}

.admin-section {
    display: none;
}

.admin-section.active {
    display: block;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-card i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.stat-card h3 {
    font-size: 2rem;
    margin-bottom: 5px;
}

.stat-card p {
    color: var(--text-light);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--bg);
    color: var(--text);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.data-table {
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-top: 20px;
}

.data-table table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--light);
    font-weight: 600;
    color: var(--text);
}

.data-table tr:hover {
    background: var(--light);
}

.ai-form {
    background: var(--bg);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.ai-result {
    margin-top: 20px;
    padding: 20px;
    background: var(--light);
    border-radius: var(--radius);
    white-space: pre-wrap;
}

.stats-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.chart-card {
    background: var(--bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.chart-card h3 {
    margin-bottom: 15px;
}

.heatmap-container {
    background: var(--bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

#heatmap {
    height: 200px;
    background: linear-gradient(90deg, #f0f0f0 0%, #007bff 100%);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .hero-actions {
        justify-content: center;
    }

    .hero-image {
        display: none;
    }

    .service-grid,
    .testimonial-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .filter-options {
        flex-direction: column;
    }

    .admin-panel {
        flex-direction: column;
    }

    .admin-nav {
        width: 100%;
        padding: 10px;
    }

    .admin-nav-links {
        display: flex;
        flex-wrap: wrap;
        gap: 5px;
    }

    .admin-nav-links li {
        margin-bottom: 0;
    }

    .admin-nav-links a {
        padding: 8px 12px;
        font-size: 0.9rem;
    }

    .stats-charts {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.6rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

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

    .search-box input {
        width: 100%;
    }
}