/* 全局样式 */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #f59e0b;
    --accent: #8b5cf6;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

[data-mode="dark"] {
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --text: #e2e8f0;
    --text-secondary: #94a3b8;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.3);
}

/* 主题样式 */
[data-theme="tech"] {
    --primary: #06b6d4;
    --secondary: #10b981;
    --accent: #6366f1;
}

[data-theme="fashion"] {
    --primary: #ec4899;
    --secondary: #f97316;
    --accent: #a855f7;
}

[data-theme="food"] {
    --primary: #ef4444;
    --secondary: #f59e0b;
    --accent: #84cc16;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 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 {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-brand i {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

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

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* 搜索面板 */
.search-panel {
    background: var(--bg-secondary);
    padding: 20px 0;
    display: none;
    box-shadow: var(--shadow);
}

.search-panel.active {
    display: block;
}

.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.search-box input {
    flex: 1;
    padding: 12px 20px;
    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 {
    border-color: var(--primary);
    outline: none;
}

.search-box button {
    padding: 12px 25px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.search-box button:hover {
    background: var(--primary-dark);
}

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

.filter-bar select,
.filter-bar input {
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font-size: 0.9rem;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
}

.hero p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 分类区域 */
.categories {
    padding: 60px 0;
}

.categories h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    transition: var(--transition);
    border: 1px solid var(--border);
}

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

.category-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.category-card span {
    font-weight: 600;
}

/* 攻略网格 */
.tours {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.tours h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

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

.tour-card {
    background: var(--bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.tour-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

.tour-card:hover .card-image img {
    transform: scale(1.1);
}

.card-price {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.card-rating {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(0,0,0,0.7);
    color: var(--secondary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.card-body {
    padding: 20px;
}

.card-body h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text);
}

.card-body p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.card-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.card-meta i {
    margin-right: 5px;
}

.card-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.tag {
    background: var(--bg-secondary);
    color: var(--primary);
    padding: 3px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    border: 1px solid var(--border);
}

.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.load-more {
    text-align: center;
    margin-top: 40px;
}

/* 按钮 */
.btn {
    padding: 10px 25px;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    font-size: 0.95rem;
}

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

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

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

.btn-secondary:hover {
    background: var(--border);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

/* 热力图 */
.heatmap {
    padding: 60px 0;
}

.heatmap h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

.heatmap-container {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 60px;
    text-align: center;
    border: 1px solid var(--border);
}

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

.heatmap-placeholder p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
}

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

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text);
}

.footer-col p {
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

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

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer-col ul a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

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

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 20px;
}

/* 管理后台样式 */
.admin-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    padding: 20px;
}

.login-card {
    background: var(--bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
}

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

.login-footer {
    text-align: center;
    margin-top: 20px;
}

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

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

.admin-sidebar {
    width: 250px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.admin-sidebar h2 {
    color: var(--primary);
    margin-bottom: 30px;
    font-size: 1.2rem;
}

.admin-sidebar nav ul {
    list-style: none;
}

.admin-sidebar nav a {
    display: block;
    padding: 12px 15px;
    color: var(--text);
    text-decoration: none;
    border-radius: var(--radius-sm);
    margin-bottom: 5px;
    transition: var(--transition);
}

.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
    background: var(--primary);
    color: white;
}

.admin-sidebar nav a i {
    margin-right: 10px;
    width: 20px;
}

.sidebar-footer {
    margin-top: auto;
    display: flex;
    gap: 10px;
}

.admin-main {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.admin-section {
    display: none;
}

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

.admin-section h1 {
    margin-bottom: 30px;
    font-size: 1.8rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow);
}

.stat-card i {
    font-size: 2.5rem;
    color: var(--primary);
}

.stat-card h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

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

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

.toolbar-info {
    margin-left: auto;
    color: var(--text-secondary);
}

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

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text);
}

table tr:hover {
    background: var(--bg-secondary);
}

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

.modal-content {
    background: var(--bg);
    padding: 30px;
    border-radius: var(--radius);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.close {
    float: right;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    background: var(--bg);
    color: var(--text);
    transition: var(--transition);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

/* AI生成卡片 */
.ai-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.ai-result {
    margin-top: 20px;
}

.ai-result pre {
    background: var(--bg-secondary);
    padding: 15px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-size: 0.85rem;
}

/* 统计图表 */
.stats-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.chart-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    margin-bottom: 20px;
}

/* 设置卡片 */
.settings-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    max-width: 600px;
    box-shadow: var(--shadow);
}

/* 提示 */
.alert {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.alert-info {
    background: #eff6ff;
    color: #2563eb;
    border: 1px solid #bfdbfe;
}

/* 快速操作 */
.quick-actions {
    margin-top: 30px;
}

.quick-actions h3 {
    margin-bottom: 20px;
}

.action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* 响应式 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--bg);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border);
    }

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

    .nav-links a {
        padding: 10px 0;
    }

    .nav-actions .btn {
        display: none;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

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

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

    .admin-sidebar {
        width: 100%;
        padding: 15px;
    }

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

    .admin-sidebar nav a {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .sidebar-footer {
        flex-direction: row;
        justify-content: center;
    }

    .admin-main {
        padding: 20px;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .hero {
        padding: 50px 0;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

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

    .container {
        padding: 0 15px;
    }
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}