/* 全局变量 */
:root {
    /* 主题色 - 极光渐变系 */
    --primary-color: #667EEA;
    --primary-dark: #5A67D8;
    --secondary-color: #9F7AEA;
    --background-color: #FAFBFC;
    --surface-color: #FFFFFF;
    --surface-hover: #F7FAFC;
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --text-muted: #718096;
    --border-color: #E5E7EB;
    --error-color: #F56565;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    --gradient-accent: linear-gradient(135deg, #F093FB 0%, #F5576C 100%);
    --gradient-button: linear-gradient(135deg, #667EEA 0%, #8B5CF6 100%);
    
    /* 功能色 */
    --success-color: #48BB78;
    --warning-color: #ED8936;
    --info-color: #4299E1;
    
    /* RGB值（用于透明度计算） */
    --primary-rgb: 102, 126, 234;
    --secondary-rgb: 159, 122, 234;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 圆角 */
    --border-radius: 12px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
}

/* 暗色主题 */
[data-theme="dark"] {
    --background-color: #0F172A;
    --surface-color: #1E293B;
    --surface-hover: #334155;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --border-color: #475569;
    
    /* 调整主色亮度 */
    --primary-color: #818CF8;
    --primary-dark: #6366F1;
    --secondary-color: #C084FC;
    --gradient-primary: linear-gradient(135deg, #818CF8 0%, #C084FC 100%);
    --gradient-button: linear-gradient(135deg, #818CF8 0%, #A855F7 100%);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* 顶部导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background-color: var(--background-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
}

.site-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-right: var(--spacing-sm);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* 左侧标题和微信按钮组 */
.header-left-group {
    display: flex;
    align-items: center;
}

.search-box {
    position: relative;
    width: 300px;
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg);
    padding-left: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color 0.3s;
}

.theme-toggle:hover {
    background-color: var(--surface-color);
}

/* 主要内容区 */
.main-container {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
    padding-top: 64px;
}

/* 侧边栏 */
.sidebar {
    background-color: var(--background-color);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-lg);
}

.sidebar-header {
    margin-bottom: var(--spacing-lg);
}

.sidebar-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.category-list {
    list-style: none;
}

.category-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text-primary);
}

.category-item:hover {
    background-color: var(--surface-color);
}

.category-item.active {
    background-color: var(--primary-color);
    color: white;
}

.category-item i {
    font-size: 1.2rem;
}

/* 工具展示区 */
.tools-container {
    padding: var(--spacing-lg);
}

/* 工具网格 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

/* 工具卡片 */
.tool-card {
    position: relative;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* 新工具标记 */
.tool-card.new-tool::after {
    content: '新';
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--gradient-accent);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.tool-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.tool-icon i {
    font-size: 24px;
    color: white;
}

.tool-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.tool-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.tool-button {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-button);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.3s;
    margin-top: auto;
}

.tool-button:hover {
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 200px 1fr;
    }
}

@media (max-width: 768px) {
    .main-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }

    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-md);
    }

    /* 平板端工具卡片优化 */
    .tool-card {
        padding: var(--spacing-md);
    }

    .tool-icon {
        width: 40px;
        height: 40px;
        margin-bottom: var(--spacing-sm);
    }

    .tool-icon i {
        font-size: 20px;
    }

    .tool-title {
        font-size: 1.1rem;
    }

    .tool-description {
        font-size: 0.85rem;
    }

    .tool-button {
        padding: 12px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 var(--spacing-md);
    }

    .search-box {
        width: 200px;
    }

    /* 手机端标题调整 */
    .site-title {
        font-size: 1.1rem;
    }

    /* 搜索框在更小屏幕上隐藏 */
    @media (max-width: 380px) {
        .search-box {
            display: none;
        }
    }

    .tools-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: var(--spacing-md);
    }

    /* 手机端工具卡片更紧凑 */
    .tool-card {
        padding: 16px;
        box-shadow: var(--shadow-sm);
    }

    .tool-card:hover {
        transform: translateY(-2px);
    }

    .tool-icon {
        width: 36px;
        height: 36px;
        margin-bottom: 12px;
    }

    .tool-icon i {
        font-size: 18px;
    }

    .tool-title {
        font-size: 1rem;
        margin-bottom: 6px;
    }

    .tool-description {
        font-size: 0.8rem;
        margin-bottom: 12px;
        line-height: 1.4;
    }

    .tool-button {
        padding: 10px 16px;
        font-size: 0.85rem;
    }

    /* 新工具标记调整 */
    .tool-card.new-tool::after {
        top: 8px;
        right: 8px;
        padding: 2px 6px;
        font-size: 10px;
    }

    /* 减少容器内边距 */
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* 微信悬浮按钮样式 */
.wechat-float {
    width: 40px;
    height: 40px;
    background-color: #07C160;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, background-color 0.3s ease;
    z-index: auto;
    margin-right: var(--spacing-md);
}

.wechat-float:hover {
    transform: scale(1.05);
    background-color: #06AA56;
}

.wechat-float i {
    color: white;
    font-size: 24px;
}

/* 微信弹框样式 */
.wechat-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    justify-content: center;
    align-items: center;
}

.wechat-modal.show {
    display: flex;
}

.wechat-modal-content {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    position: relative;
    text-align: center;
}

.close-modal {
    position: absolute;
    right: 10px;
    top: 5px;
    font-size: 24px;
    cursor: pointer;
    color: #666;
}

.wechat-qrcode {
    max-width: 200px;
    height: auto;
    margin-top: 10px;
}

/* 图片拼接工具特定样式 */
.image-stitcher-container {
    max-width: 900px;
    margin: var(--spacing-lg) auto;
    background: var(--background-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
}

/* 海报二维码工具样式 */
.poster-qrcode-main {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* 颜色转换器工具样式 */
.color-converter {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Markdown编辑器样式 */
.markdown-editor {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* 二维码生成器样式 */
.qrcode-generator {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* 所有工具页面的通用容器 */
.tool-page-container {
    padding-top: 80px;
    min-height: 100vh;
}

/* 修复所有使用 with-tool-nav 类的容器 */
.with-tool-nav {
    padding-top: 80px !important;
}

.image-stitcher-form-group {
    margin-bottom: var(--spacing-md);
}

.image-stitcher-file-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    color: var(--text-primary);
    cursor: pointer;
}
.image-stitcher-file-input:hover {
    border-color: var(--primary-color);
}

.image-stitcher-direction-group {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.image-stitcher-size-group {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    margin-top: var(--spacing-sm);
}
.image-stitcher-size-group input {
    width: 80px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    color: var(--text-primary);
}
.image-stitcher-size-group .hint-text {
    color: var(--text-secondary);
    font-size: 0.95em;
}

.image-stitcher-preview-area {
    margin: var(--spacing-lg) 0;
    text-align: center;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.image-stitcher-canvas {
    background: #f0f0f0; /* 留白背景 */
    border-radius: var(--border-radius);
    max-width: 100%;
    box-shadow: var(--shadow-sm);
}

.image-stitcher-error {
    color: var(--error-color);
    margin-top: var(--spacing-md);
    text-align: center;
}

/* 底部技术支持样式 */
.tech-support {
    position: fixed;
    bottom: 10px;
    right: 10px;
    z-index: 100;
}

.tech-support a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background-color: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    text-decoration: none;
    font-size: 12px;
    border-radius: 20px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.tech-support a:hover {
    background-color: rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.tech-support i {
    font-size: 14px;
}

/* 暗色主题下的技术支持样式 */
[data-theme="dark"] .tech-support a {
    background-color: rgba(102, 126, 234, 0.15);
    color: #8C9AFF;
    border-color: rgba(102, 126, 234, 0.3);
}

[data-theme="dark"] .tech-support a:hover {
    background-color: rgba(102, 126, 234, 0.25);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .tech-support {
        bottom: 5px;
        right: 5px;
    }
    
    .tech-support a {
        font-size: 11px;
        padding: 4px 10px;
    }
    
    .tech-support i {
        font-size: 12px;
    }
}

/* 工具页面头部样式 */
.tool-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-top: 20px; /* 增加顶部内边距，避免与导航栏太近 */
}

.tool-header h1 {
    margin: 0;
    font-size: 2rem;
    color: var(--text-primary);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--surface-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 14px;
}

.back-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(-2px);
}

.back-link i {
    font-size: 18px;
}

/* 工具页面通用导航栏 */
.tool-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--background-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.tool-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.tool-nav-left {
    display: flex;
    align-items: center;
    gap: 30px;
}

.tool-nav-logo {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

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

.tool-nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
    position: relative;
    padding: 5px 0;
}

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

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

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

/* 工具下拉菜单 */
.tool-dropdown {
    position: relative;
}

.tool-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.tool-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 10px;
    background: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.tool-dropdown:hover .tool-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tool-dropdown-item {
    display: block;
    padding: 10px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.2s ease;
    font-size: 14px;
}

.tool-dropdown-item:hover {
    background: var(--hover-background);
}

.tool-dropdown-item:first-child {
    border-radius: 8px 8px 0 0;
}

.tool-dropdown-item:last-child {
    border-radius: 0 0 8px 8px;
}

/* 导航栏下的内容偏移 */
.with-tool-nav {
    padding-top: 80px;
}

/* 工具页面容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 工具容器样式 */
.tool-container {
    background: var(--background-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-lg);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .tool-nav-container {
        padding: 0 15px;
    }
    
    .tool-nav-links {
        display: none;
    }
    
    .tool-nav-logo {
        font-size: 1rem;
    }
    
    /* 移动端减少顶部间距 */
    .with-tool-nav {
        padding-top: 70px !important;
    }
    
    .tool-header {
        padding-top: 10px;
    }
}

/* 暗色主题适配 */
[data-theme="dark"] .tool-nav {
    background: rgba(26, 26, 26, 0.95);
}

[data-theme="dark"] .tool-dropdown-menu {
    background: var(--surface-color);
}

/* 修复暗色主题变量 */
[data-theme="dark"] {
    --hover-background: rgba(255, 255, 255, 0.1);
} 

/* 额外的移动端优化 */
@media (max-width: 480px) {
    /* 优化侧边栏分类标题 */
    .category-title {
        font-size: 0.9rem;
    }
    
    /* 优化工具页面的标题 */
    .tool-header h1 {
        font-size: 1.5rem;
    }
    
    /* 微信悬浮按钮在手机上调整大小 */
    .wechat-float {
        width: 36px;
        height: 36px;
    }
    
    .wechat-float i {
        font-size: 18px;
    }
    
    /* 优化工具导航栏高度 */
    .tool-nav {
        height: 50px;
    }
    
    .with-tool-nav {
        padding-top: 50px !important;
    }
    
    /* 底部技术支持链接 */
    .tech-support {
        font-size: 0.8rem;
        padding: 10px;
    }
}

/* 超小屏幕（320px）特殊处理 */
@media (max-width: 320px) {
    .tool-card {
        padding: 12px;
    }
    
    .tool-title {
        font-size: 0.95rem;
    }
    
    .tool-description {
        font-size: 0.75rem;
    }
    
    .site-title {
        font-size: 1rem;
    }
}

/* CSV数据清洗器样式 */
.upload-section {
    margin-bottom: var(--spacing-lg);
}

.upload-box {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background-color: var(--surface-color);
}

.upload-box:hover, .upload-box.dragover {
    border-color: var(--primary-color);
    background-color: rgba(102, 126, 234, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.upload-text h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.upload-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.upload-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.upload-btn:hover {
    background-color: rgba(102, 126, 234, 0.9);
    transform: translateY(-2px);
}

.data-section {
    margin-top: var(--spacing-lg);
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
}

.toolbar-left, .toolbar-right {
    display: flex;
    gap: var(--spacing-md);
}

.btn-primary, .btn-secondary, .btn-success, .btn-action, .btn-danger, .btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.btn-primary:hover {
    background-color: rgba(102, 126, 234, 0.9);
}

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

.btn-secondary:hover {
    background-color: rgba(102, 102, 102, 0.9);
}

.btn-success {
    background-color: #52C41A;
    color: white;
}

.btn-success:hover {
    background-color: rgba(82, 196, 26, 0.9);
}

.btn-action {
    background-color: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-danger:hover {
    background-color: rgba(255, 77, 79, 0.9);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    background-color: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.cleaning-panel {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.cleaning-panel h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.cleaning-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.option-group h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--border-color);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.table-container {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.table-header h3 {
    color: var(--text-primary);
}

.table-info {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

#dataTable {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--background-color);
}

#dataTable th, #dataTable td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    text-align: left;
}

#dataTable th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

#dataTable tr:nth-child(even) {
    background-color: rgba(102, 126, 234, 0.05);
}

#dataTable tr:hover {
    background-color: rgba(102, 126, 234, 0.1);
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--background-color);
    margin: 5% auto;
    padding: 0;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    color: var(--text-primary);
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
}

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

.modal-body {
    padding: var(--spacing-lg);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

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

.form-group select, .form-group input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    background-color: var(--background-color);
    color: var(--text-primary);
}

.form-group select:focus, .form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.radio-group, .checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.radio-group label, .checkbox-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease;
}

.radio-group label:hover, .checkbox-group label:hover {
    background-color: var(--surface-color);
}

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

.stat-card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.stat-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--border-color);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
}

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

.stat-value {
    color: var(--text-primary);
    font-weight: 600;
}

.column-stat {
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.column-stat strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-details {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.chart-container {
    height: 400px;
    margin-top: var(--spacing-lg);
}

.history-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.history-list {
    max-height: 400px;
    overflow-y: auto;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    background-color: var(--surface-color);
}

.history-info {
    display: flex;
    flex-direction: column;
}

.history-info strong {
    color: var(--text-primary);
}

.history-time {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.column-list {
    max-height: 400px;
    overflow-y: auto;
}

.column-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    background-color: var(--surface-color);
}

.column-info {
    display: flex;
    flex-direction: column;
}

.column-name {
    color: var(--text-primary);
    font-weight: 600;
}

.column-type {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.column-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    z-index: 1001;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
}

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

.message-success {
    background-color: #52C41A;
}

.message-error {
    background-color: var(--error-color);
}

.message-info {
    background-color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .toolbar {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .toolbar-left, .toolbar-right {
        flex-wrap: wrap;
    }
    
    .cleaning-options {
        grid-template-columns: 1fr;
    }
    
    .table-info {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-details {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

/* META标签生成器专用样式 */
.meta-generator-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
}

.meta-left-column,
.meta-right-column {
    display: flex;
    flex-direction: column;
}

.meta-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.meta-section h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.meta-section h3 i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

/* 模板选择网格 */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.template-item {
    background: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.template-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.template-item.active {
    border-color: var(--primary-color);
    background: rgba(91, 106, 255, 0.05);
}

.template-icon {
    background: var(--primary-color);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.template-info h4 {
    color: var(--text-primary);
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.template-info p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.4;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.required {
    color: var(--error-color);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.field-hint {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
    font-size: 0.75rem;
}

.char-count {
    color: var(--text-secondary);
    font-weight: 500;
}

.char-count.over-limit {
    color: var(--error-color);
}

.hint-text {
    color: var(--text-secondary);
}

.keyword-count {
    color: var(--primary-color);
    font-weight: 500;
}

/* 结果容器 */
.result-container {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.result-header {
    background: var(--surface-color);
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-tabs {
    display: flex;
    gap: 8px;
}

.result-tab {
    background: none;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.result-tab.active {
    background: var(--primary-color);
    color: white;
}

.result-actions {
    display: flex;
    gap: 8px;
}

.copy-btn,
.save-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.copy-btn:hover,
.save-btn:hover {
    background: var(--secondary-color);
}

.result-content {
    padding: 20px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.result-content pre {
    background: var(--surface-color);
    padding: 16px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    line-height: 1.4;
}

.result-content code {
    color: var(--text-primary);
}

/* 预览样式 */
.preview-container {
    display: grid;
    gap: 24px;
}

.preview-section h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 12px;
}

.search-preview {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
}

.search-title {
    color: #1a0dab;
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 4px;
    text-decoration: underline;
}

.search-url {
    color: #006621;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.search-description {
    color: #545454;
    font-size: 0.9rem;
    line-height: 1.4;
}

.facebook-preview,
.twitter-preview {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-width: 500px;
}

.facebook-image,
.twitter-image {
    background: #e9ecef;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.facebook-content,
.twitter-content {
    padding: 16px;
}

.facebook-title,
.twitter-title {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.facebook-description,
.twitter-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: 8px;
}

.facebook-domain,
.twitter-domain {
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
}

/* SEO建议 */
.seo-suggestions {
    display: grid;
    gap: 12px;
}

.suggestion-item {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.suggestion-item.success {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.suggestion-item.warning {
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.suggestion-item.error {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.05);
}

.suggestion-item.info {
    border-color: var(--primary-color);
    background: rgba(91, 106, 255, 0.05);
}

.suggestion-item i {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.suggestion-item.success i {
    color: #10b981;
}

.suggestion-item.warning i {
    color: #f59e0b;
}

.suggestion-item.error i {
    color: #ef4444;
}

.suggestion-item.info i {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .meta-generator-container {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 16px;
    }
    
    .template-grid {
        grid-template-columns: 1fr;
    }
    
    .template-item {
        padding: 12px;
    }
    
    .template-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .meta-section {
        padding: 16px;
    }
    
    .result-header {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .result-actions {
        justify-content: center;
    }
    
    .facebook-preview,
    .twitter-preview {
        max-width: 100%;
    }
}

/* 社交媒体标题生成器样式 */
.platform-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.platform-tab {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--surface-color);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.platform-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.platform-tab.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.input-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.emotion-slider {
    position: relative;
}

.emotion-slider input[type="range"] {
    width: 100%;
    margin: var(--spacing-sm) 0;
}

.emotion-labels {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
}

.length-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
}

.length-info input[type="checkbox"] {
    margin: 0;
}

.generate-controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.generate-btn,
.template-btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.generate-btn:hover {
    background: color-mix(in srgb, var(--primary-color) 90%, black);
}

.template-btn {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

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

.result-section,
.template-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.result-header,
.template-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.result-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.action-btn {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: white;
    color: var(--text-primary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.title-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.title-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.title-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.title-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.title-number {
    background: var(--primary-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
}

.title-text {
    flex: 1;
    font-size: 15px;
    line-height: 1.4;
}

.title-length {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--surface-color);
    padding: 2px 6px;
    border-radius: 4px;
}

.title-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-md);
}

.template-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.template-category {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: white;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.template-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.template-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.template-text {
    flex: 1;
    font-size: 14px;
    color: var(--text-secondary);
}

.use-template-btn {
    padding: 6px 12px;
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    background: var(--primary-color);
    color: white;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.use-template-btn:hover {
    background: color-mix(in srgb, var(--primary-color) 90%, black);
}

.close-btn {
    padding: 6px;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
}

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

.history-section,
.favorites-section {
    margin: var(--spacing-lg) 0;
}

.history-header,
.favorites-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.history-header h3,
.favorites-header h3 {
    color: var(--text-primary);
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.clear-btn {
    padding: 6px 12px;
    border: 1px solid var(--error-color);
    border-radius: 6px;
    background: white;
    color: var(--error-color);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.clear-btn:hover {
    background: var(--error-color);
    color: white;
}

.history-list,
.favorites-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.history-item,
.favorite-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.history-header,
.favorite-content {
    flex: 1;
}

.history-topic,
.favorite-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.history-meta,
.favorite-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--text-secondary);
}

.history-time,
.favorite-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.history-actions,
.favorite-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-md);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--text-primary);
    color: var(--background-color);
    padding: 12px 20px;
    border-radius: 6px;
    z-index: 10000;
    font-size: 14px;
    box-shadow: var(--shadow-lg);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .platform-tabs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .generate-controls {
        flex-direction: column;
    }
    
    .result-header,
    .template-header,
    .history-header,
    .favorites-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .result-actions,
    .history-actions,
    .favorite-actions {
        justify-content: center;
    }
    
    .title-item,
    .history-item,
    .favorite-item {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .title-actions,
    .history-actions,
    .favorite-actions {
        margin-left: 0;
        justify-content: center;
    }
}

/* ================== 本地文本加密工具样式 ================== */

/* 加密设置区域 */
.encrypt-settings {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.setting-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.setting-group select,
.setting-group input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.setting-group select:focus,
.setting-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* 密码输入区域 */
.password-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.password-input-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.password-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.password-field label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    flex: 1;
    padding: var(--spacing-sm) 40px var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.password-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.password-wrapper input.error {
    border-color: var(--error-color);
}

.password-toggle {
    position: absolute;
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.password-toggle:hover {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
}

/* 密码强度指示器 */
.password-strength {
    margin-bottom: var(--spacing-md);
}

.strength-bar {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.strength-progress {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.strength-progress.weak {
    background: #ef4444;
}

.strength-progress.medium {
    background: #f59e0b;
}

.strength-progress.strong {
    background: #10b981;
}

.strength-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.password-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* 主面板 */
.main-panel {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.panel-tabs {
    display: flex;
    background: var(--background-color);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

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

.tab-panel {
    display: none;
    padding: var(--spacing-lg);
}

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

/* 双面板布局 */
.dual-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.input-panel,
.output-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.panel-actions .btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
}

/* 文本区域 */
.dual-panel textarea {
    width: 100%;
    height: 300px;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    resize: vertical;
    transition: all 0.2s ease;
}

.dual-panel textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.dual-panel textarea[readonly] {
    background: var(--surface-color);
    cursor: default;
}

.text-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

/* 文件上传区域 */
.file-upload-area {
    margin-bottom: var(--spacing-lg);
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    text-align: center;
    background: var(--background-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary-color);
    background: rgba(91, 106, 255, 0.05);
}

.upload-zone i {
    font-size: 3rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.upload-zone h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.upload-zone p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.file-info {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.file-details h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.file-details p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 操作按钮 */
.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* 加密历史 */
.history-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.history-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.history-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.history-list {
    max-height: 400px;
    overflow-y: auto;
}

.history-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.history-empty i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.history-item {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s ease;
}

.history-item:hover {
    background: var(--background-color);
}

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

.history-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.history-type,
.history-algorithm {
    background: var(--primary-color);
    color: white;
    padding: 2px var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.history-algorithm {
    background: var(--secondary-color);
}

.history-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.history-content {
    margin-bottom: var(--spacing-sm);
}

.history-input,
.history-output {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    word-break: break-all;
}

.history-actions {
    display: flex;
    justify-content: flex-end;
}

/* 安全提示 */
.security-notice {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--border-radius);
    border: 1px solid #bae6fd;
    margin-bottom: var(--spacing-lg);
}

[data-theme="dark"] .security-notice {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-color: #475569;
}

.notice-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-lg) 0;
}

.notice-header i {
    font-size: 1.5rem;
    color: #0284c7;
}

.notice-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.notice-content {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
}

.notice-content ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.notice-content li {
    padding: var(--spacing-sm) 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.notice-content li:before {
    content: '🔒';
    flex-shrink: 0;
}

.notice-content strong {
    color: var(--text-primary);
}

/* 消息提示 */
.message-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary-color);
    z-index: 10000;
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideIn 0.3s ease;
}

.message-toast.success {
    border-left-color: #10b981;
}

.message-toast.error {
    border-left-color: #ef4444;
}

.message-toast.warning {
    border-left-color: #f59e0b;
}

.message-toast.info {
    border-left-color: var(--primary-color);
}

.message-toast i {
    font-size: 1.2rem;
}

.message-toast.success i {
    color: #10b981;
}

.message-toast.error i {
    color: #ef4444;
}

.message-toast.warning i {
    color: #f59e0b;
}

.message-toast.info i {
    color: var(--primary-color);
}

.message-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 4px;
    transition: all 0.2s ease;
    margin-left: auto;
}

.message-close:hover {
    background: var(--surface-color);
    color: var(--text-primary);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 加密工具响应式设计 */
@media (max-width: 768px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .password-input-group {
        grid-template-columns: 1fr;
    }
    
    .dual-panel {
        grid-template-columns: 1fr;
    }
    
    .panel-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        justify-content: flex-start;
        padding: var(--spacing-md);
    }
    
    .history-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .message-toast {
        right: 10px;
        left: 10px;
        max-width: none;
    }
}