/* 基础变量 */
:root {
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --primary-color: #2c3e50;
    --text-color: #2c3e50;
    --text-muted: #6c757d;
    --link-color: #34495e;
    --link-hover-color: #2c3e50;
    --header-bg: #2c3e50;
    --header-text: #fff;
    --body-bg: #f8f9fa;
    --card-bg: #fff;
    --card-border: #e9ecef;
    --breadcrumb-bg: #fff;
    --badge-bg: #f8f9fa;
    --badge-text: #2c3e50;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --border-radius: 4px;
}

/* 商务蓝（默认主题） */
[data-theme="light"] {
    --primary-color: #2c3e50;
    --text-color: #2c3e50;
    --text-muted: #6c757d;
    --link-color: #34495e;
    --link-hover-color: #2c3e50;
    --header-bg: #2c3e50;
    --header-text: #fff;
    --body-bg: #f8f9fa;
    --card-bg: #fff;
    --card-border: #e9ecef;
    --breadcrumb-bg: #fff;
    --badge-bg: #f8f9fa;
    --badge-text: #2c3e50;
    --shadow-color: rgba(0, 0, 0, 0.08);
}

/* 暗黑商务 */
[data-theme="dark"] {
    --primary-color: #1a1a1a;
    --text-color: #e1e1e1;
    --text-muted: #a0a0a0;
    --link-color: #e1e1e1;
    --link-hover-color: #fff;
    --header-bg: #1a1a1a;
    --header-text: #fff;
    --body-bg: #121212;
    --card-bg: #1e1e1e;
    --card-border: #2d2d2d;
    --breadcrumb-bg: #1e1e1e;
    --badge-bg: #2d2d2d;
    --badge-text: #e1e1e1;
    --shadow-color: rgba(0, 0, 0, 0.2);
}

/* 深蓝商务 */
[data-theme="blue"] {
    --primary-color: #1e3d59;
    --text-color: #2c3e50;
    --text-muted: #5a7a96;
    --link-color: #1e3d59;
    --link-hover-color: #15293d;
    --header-bg: #1e3d59;
    --header-text: #fff;
    --body-bg: #f0f7ff;
    --card-bg: #fff;
    --card-border: #dbeaf7;
    --breadcrumb-bg: #fff;
    --badge-bg: #e6f0fA;
    --badge-text: #1e3d59;
    --shadow-color: rgba(30, 61, 89, 0.08);
}

/* 墨绿商务 */
[data-theme="green"] {
    --primary-color: #2f4538;
    --text-color: #2c3e50;
    --text-muted: #6c757d;
    --link-color: #2f4538;
    --link-hover-color: #1e2e25;
    --header-bg: #2f4538;
    --header-text: #fff;
    --body-bg: #f5f7fa;
    --card-bg: #fff;
    --card-border: #e9ecef;
    --breadcrumb-bg: #fff;
    --badge-bg: #f8f9fa;
    --badge-text: #2f4538;
    --shadow-color: rgba(74, 60, 92, 0.08);
}

/* 深紫商务 */
[data-theme="purple"] {
    --primary-color: #4a3c5c;
    --text-color: #2c3e50;
    --text-muted: #6c757d;
    --link-color: #4a3c5c;
    --link-hover-color: #362c43;
    --header-bg: #4a3c5c;
    --header-text: #fff;
    --body-bg: #f5f7fa;
    --card-bg: #fff;
    --card-border: #e9ecef;
    --breadcrumb-bg: #fff;
    --badge-bg: #f8f9fa;
    --badge-text: #4a3c5c;
    --shadow-color: rgba(74, 60, 92, 0.08);
}

/* 活力橙主题 */
[data-theme="orange"] {
    --primary-color: #e24c07;
    --text-color: #5c4836;
    --text-muted: #8a7b6e;
    --link-color: #e24c07;
    --link-hover-color: #c84306;
    --header-bg: #e24c07;
    --header-text: #fff;
    --body-bg: #fff5f0;
    --card-bg: #fff;
    --card-border: #fcebe0;
    --breadcrumb-bg: #fff;
    --badge-bg: #fff0e8;
    --badge-text: #e24c07;
    --shadow-color: rgba(92, 72, 54, 0.08);
}

/* 全局样式 */
body {
    background-color: var(--body-bg);
    color: var(--text-color);
    transition: all var(--transition-speed) ease;
    font-family: var(--font-family, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif);
    font-size: var(--font-size, 14px);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background-color: var(--header-bg) !important;
    color: var(--header-color) !important;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.card {
    background-color: var(--card-bg);
    border-color: var(--card-border);
    border-radius: var(--border-radius);
    box-shadow: 0 1px 3px var(--shadow-color);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 2px 6px var(--shadow-color);
}

a {
    color: var(--link-color);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

a:hover {
    color: var(--link-hover-color);
}

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

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

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

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

/* 主题预览样式 */
.theme-preview {
    border: 2px solid var(--card-border);
    position: relative;
    overflow: hidden;
}

.theme-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 60%;
    background: var(--header-bg);
}

.theme-preview::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    background: var(--background-color);
}

.theme-preview.active {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    flex: 1;
}

/* 头部样式 */
header {
    background: #fff;
    padding: 30px 20px;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    color: var(--primary-color);
    font-size: 2.5em;
    margin-bottom: 15px;
}

/* 面包屑导航 */
.breadcrumb {
    background-color: white;
    padding: 10px 15px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

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

/* 内容区域 */
section {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

section h2 {
    color: var(--primary-color);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.content {
    line-height: 1.8;
}

/* 图片画廊 */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.image-gallery figure {
    background: white;
    padding: 10px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.image-gallery img {
    width: 100%;
    height: auto;
    border-radius: 4px;
}

.image-gallery figcaption {
    margin-top: 8px;
    text-align: center;
    color: var(--text-color);
    font-size: 0.9em;
}

/* 子地区列表 */
.region-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.region-item {
    display: block;
    padding: 15px;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-color);
    text-align: center;
    transition: all 0.3s ease;
}

.region-item:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 提示信息样式 */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin: 20px 0;
}

.alert-info {
    background-color: #ebf5fb;
    border: 1px solid #3498db;
    color: #2980b9;
}

/* 页脚样式 */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--card-border);
    color: var(--text-color);
    margin-top: 3rem;
}

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

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

.footer .result-desc {
    font-size: 0.9rem;
    line-height: 1.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    h1 {
        font-size: 2em;
    }

    section {
        padding: 15px;
    }

    .image-gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
    }

    .region-list {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 480px) {
    .stats {
        grid-template-columns: 1fr;
    }
    
    .search-input {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    .region-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    h1 {
        font-size: 1.8em;
    }
}

.breadcrumb-item a {
    color: var(--link-color);
}

.breadcrumb-item.active {
    color: var(--text-muted);
}

/* 主题预览样式 */
.theme-preview[data-theme="light"] {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    border: 1px solid #e9ecef;
}

.theme-preview[data-theme="dark"] {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border: 1px solid #2d2d2d;
}

.theme-preview[data-theme="blue"] {
    background: linear-gradient(135deg, #1e3d59 0%, #15293d 100%);
    border: 1px solid #e9ecef;
}

.theme-preview[data-theme="green"] {
    background: linear-gradient(135deg, #2f4538 0%, #1e2e25 100%);
    border: 1px solid #e9ecef;
}

.theme-preview[data-theme="purple"] {
    background: linear-gradient(135deg, #4a3c5c 0%, #362c43 100%);
    border: 1px solid #e9ecef;
}

.theme-preview[data-theme="orange"] {
    background: linear-gradient(135deg, #5c4836 0%, #43352a 100%);
    border: 1px solid #e9ecef;
}

/* 首页特定样式 */
.region-card {
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
}

.region-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 6px var(--shadow-color);
}

.city-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.city-list .badge {
    font-size: 0.8rem;
    font-weight: normal;
    background: var(--badge-bg) !important;
    color: var(--badge-text) !important;
}

.badge.bg-light {
    border: 1px solid var(--card-border);
}

.badge.bg-light:hover {
    background-color: var(--badge-bg) !important;
    opacity: 0.9;
}

/* 头部样式 */
.header {
    background: var(--header-bg);
    color: var(--header-text);
    padding: 2rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px var(--shadow-color);
}

/* 面包屑导航 */
.breadcrumb {
    background: var(--breadcrumb-bg);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 2px var(--shadow-color);
}

/* 卡片标题链接 */
.card-title a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.card-title a:hover {
    color: var(--link-hover-color);
}

/* 统计信息 */
.stats {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.stats i {
    margin-right: 3px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .city-list {
        gap: 2px;
    }
    
    .city-list .badge {
        font-size: 0.75rem;
    }
    
    .stats {
        font-size: 0.8rem;
    }
}

/* --- 主题颜色强制覆盖 --- */
[data-theme]:not([data-theme="light"]) body {
    color: var(--text-color) !important;
    background-color: var(--body-bg) !important;
}

/* General Text Elements */
[data-theme]:not([data-theme="light"]) .text-dark,
[data-theme]:not([data-theme="light"]) p,
[data-theme]:not([data-theme="light"]) div,
[data-theme]:not([data-theme="light"]) span,
[data-theme]:not([data-theme="light"]) h1, [data-theme]:not([data-theme="light"]) h2, [data-theme]:not([data-theme="light"]) h3, [data-theme]:not([data-theme="light"]) h4, [data-theme]:not([data-theme="light"]) h5, [data-theme]:not([data-theme="light"]) h6,
[data-theme]:not([data-theme="light"]) td, [data-theme]:not([data-theme="light"]) th,
[data-theme]:not([data-theme="light"]) li,
[data-theme]:not([data-theme="light"]) .text-muted {
    color: var(--text-color) !important;
}

/* Links */
[data-theme]:not([data-theme="light"]) a,
[data-theme]:not([data-theme="light"]) a.text-dark,
[data-theme]:not([data-theme="light"]) .card-title a,
[data-theme]:not([data-theme="light"]) .breadcrumb-item a {
    color: var(--link-color) !important;
}

[data-theme]:not([data-theme="light"]) a:hover,
[data-theme]:not([data-theme="light"]) a.text-dark:hover,
[data-theme]:not([data-theme="light"]) .card-title a:hover,
[data-theme]:not([data-theme="light"]) .breadcrumb-item a:hover {
    color: var(--link-hover-color) !important;
}

/* Cards & Backgrounds */
[data-theme]:not([data-theme="light"]) .card,
[data-theme]:not([data-theme="light"]) .list-group-item {
    background-color: var(--card-bg) !important;
    border-color: var(--card-border) !important;
}

/* Forms (Search Box, Selects) */
[data-theme]:not([data-theme="light"]) .form-control,
[data-theme]:not([data-theme="light"]) .form-select {
    background-color: var(--card-bg) !important;
    color: var(--text-color) !important;
    border-color: var(--card-border) !important;
}

[data-theme]:not([data-theme="light"]) .form-control::placeholder {
    color: var(--text-muted) !important;
}

/* Navigation (Breadcrumbs) */
[data-theme]:not([data-theme="light"]) .breadcrumb {
    background-color: var(--breadcrumb-bg) !important;
}
[data-theme]:not([data-theme="light"]) .breadcrumb-item.active {
    color: var(--text-muted) !important;
}

/* Footer */
[data-theme]:not([data-theme="light"]) .footer,
[data-theme]:not([data-theme="light"]) footer {
     background-color: var(--card-bg) !important;
     color: var(--text-muted) !important;
}
[data-theme]:not([data-theme="light"]) .footer a,
[data-theme]:not([data-theme="light"]) footer a {
    color: var(--link-color) !important;
}

[data-theme]:not([data-theme="light"]) .footer,
[data-theme]:not([data-theme="light"]) .text-muted {
    color: var(--bs-gray-500) !important;
}
[data-theme]:not([data-theme="light"]) .footer a,
[data-theme]:not([data-theme="light"]) .text-muted a {
    color: var(--bs-gray-400) !important;
}

/* 主题切换器样式 */
.theme-switcher {
    padding-top: 20px;
    display: flex;
    gap: 15px;
    justify-content: center;
    align-items: center;
}

.theme-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid #ddd;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.theme-btn:hover {
    transform: scale(1.1);
}

.theme-btn.active {
    border-color: var(--primary-color);
}

.theme-btn[data-theme="light"] {
    background-color: #f8f9fa;
}

.theme-btn[data-theme="blue"] {
    background-color: #1e3d59;
}

.theme-btn[data-theme="orange"] {
    background-color: #e24c07;
}

.theme-btn[data-theme="dark"] {
    background-color: #1e1e1e;
}