:root {
    --primary-color: #4a89dc;
    --primary-hover: #3a70c2;
    --secondary-color: #f5f7fa;
    --border-color: #e6e9ed;
    --text-color: #434a54;
    --light-text: #aab2bd;
    --success-color: #37bc9b;
    --danger-color: #da4453;
    --warning-color: #f6bb42;
    --info-color: #3bafda;
    --dark-color: #656d78;
    --light-color: #f5f7fa;
    --code-bg: #f5f7fa;
    --hidden-bg: #e6e9ed;
    --preview-bg: #fafbfc;
    --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --border-radius: 6px;
    --transition: all 0.3s ease;
   
    /* 新增夜间模式变量 */
    --bg-color: white;
    --panel-bg: white;
}

/* 夜间模式样式 */
.dark-mode {
    --bg-color: #2d2d2d;
    --panel-bg: #3a3a3a;
    --secondary-color: #333;
    --border-color: #444;
    --text-color: #e0e0e0;
    --light-text: #888;
    --code-bg: #3a3a3a;
    --hidden-bg: #444;
    --preview-bg: #333;
    
    --light-color: #444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--secondary-color);
    padding: 15px;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--panel-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition);
}

h1 {
    color: var(--dark-color);
    text-align: center;
    padding: 20px;
    font-size: 1.8rem;
    background-color: var(--light-color);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.editor-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 20px;
}

@media (min-width: 768px) {
    .editor-container {
        flex-direction: row;
    }
}

.editor-box, .preview-box {
    flex: 1;
    min-width: 0;
}

.preview-box {
    border: 1px solid var(--border-color);
    padding: 15px;
    background-color: var(--preview-bg);
    border-radius: var(--border-radius);
    overflow-y: auto;
    min-height: 300px;
    transition: var(--transition);
    white-space: pre-wrap; 
    word-wrap: break-word;    overflow-wrap: break-word;
    }

textarea {
    width: 100%;
    height: 235px;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    resize: vertical;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.5;
    transition: var(--transition);
    background-color: var(--panel-bg);
    color: var(--text-color);
}

textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 137, 220, 0.1);
}

.btn {
    padding: 8px 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
}

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

.btn-sm {
    padding: 6px 10px;
    font-size: 13px;
}

.btn-group {
    display: flex;
    gap: 2px;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-top-left-radius: var(--border-radius);
    border-bottom-left-radius: var(--border-radius);
}

.btn-group .btn:last-child {
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

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

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

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

.btn-success:hover {
    background-color: #2fa786;
}

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

.btn-danger:hover {
    background-color: #c9303c;
}

.btn-warning {
    background-color: var(--warning-color);
    color: #333;
}

.btn-warning:hover {
    background-color: #e8b138;
}

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

.btn-info:hover {
    background-color: #2a9ac4;
}

select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--panel-bg);
    font-size: 14px;
    transition: var(--transition);
    color: var(--text-color);
}

select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 137, 220, 0.1);
}

.color-picker {
    display: flex;
    align-items: center;
    gap: 5px;
}

.color-input {
    width: 30px;
    height: 30px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
}

.recent-colors {
    display: flex;
    gap: 5px;
}

.recent-color {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--panel-bg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: var(--transition);
}

.recent-color:hover {
    transform: scale(1.1);
}

.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    justify-content: center;
}

.tag-examples {
    margin-top: 30px;
    background-color: var(--light-color);
    padding: 20px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.tag-examples h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tag-example {
    margin-bottom: 15px;
    padding: 12px;
    background-color: var(--panel-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.tag-example code {
    background-color: var(--code-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 13px;
    color: var(--danger-color);
    transition: var(--transition);
}

.tag-example-preview {
    margin-top: 10px;
    padding: 10px;
    background-color: var(--preview-bg);
    border-left: 3px solid var(--border-color);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    transition: var(--transition);
}

size="1" { font-size: 10px; }
size="2" { font-size: 12px; }
size="3" { font-size: 14px; }
size="4" { font-size: 16px; }
size="5" { font-size: 18px; }
size="6" { font-size: 20px; }
size="7" { font-size: 24px; }

.hidden-content {
    background-color: var(--hidden-bg);
    padding: 10px;
    border: 1px dashed var(--border-color);
    color: var(--light-text);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.code-block {
    background-color: var(--code-bg);
    padding: 12px;
    border-radius: var(--border-radius);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    white-space: pre;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.4;
    transition: var(--transition);
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--dark-color);
    color: white;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.toast.show {
    opacity: 1;
}

/* 悬浮按钮样式 */
.floating-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    user-select: none;
    transition: var(--transition);
    opacity: 0.8;
    font-size: 16px;
}

.floating-btn:hover {
    background-color: var(--primary-hover);
    transform: scale(1.1);
    opacity: 1;
}

/* 新增的两个悬浮按钮样式 */
.undo-btn {
    right: 70px;
    background-color: var(--info-color);
}

.redo-btn {
    right: 120px;
    background-color: var(--success-color);
}

.undo-btn:hover {
    background-color: #2a9ac4;
}

.redo-btn:hover {
    background-color: #2fa786;
}

/* 主题切换按钮样式 */
.theme-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--warning-color);
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    user-select: none;
    transition: var(--transition);
    opacity: 0.8;
    font-size: 16px;
}

.theme-btn:hover {
    background-color: #e8b138;
    opacity: 1;
}

/* 标签面板样式 */
.tag-panel {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 300px;
    background-color: var(--panel-bg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 10px;
    z-index: 1000;
    display: none;
    flex-direction: column;
    gap: 8px;
    transition: var(--transition);
}

.tag-panel.show {
    display: flex;
}

.tag-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 5px;
}

.tag-panel-title {
    font-weight: bold;
    font-size: 14px;
    color: var(--text-color);
}

.tag-panel-close {
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    color: var(--text-color);
}

.tag-panel-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 5px;
}

.tag-panel-btn {
    padding: 6px;
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 新增：标签对样式 */
.tag-pair {
    grid-column: span 2;
    display: flex;
    gap: 5px;
}

.tag-pair .tag-panel-btn {
    flex: 1;
}

.tag-pair .tag-panel-btn:first-child {
    background-color: var(--success-color);
}

.tag-pair .tag-panel-btn:last-child {
    background-color: var(--danger-color);
}

/* 紧凑的格式控制栏 */
.format-controls {
    display: flex;
    flex-wrap: nowrap; /* 不换行 */
    gap: 8px;
    margin-top: 15px;
    padding: 10px;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    overflow-x: auto; /* 横向滚动 */
    white-space: nowrap; /* 防止内部换行 */
}

.format-group {
    display: flex;
    align-items: center;
    gap: 5px;
    background-color: var(--panel-bg);
    padding: 5px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    flex-shrink: 0; /* 禁止压缩 */
}

.format-group select {
    border: none;
    padding: 5px;
    font-size: 13px;
    width: 80px; /* 固定宽度 */
}

.format-group .btn-sm {
    padding: 5px 8px;
    min-width: 50px; /* 固定最小宽度 */
}

/* 修改颜色按钮样式 */
.color-btn {
    border: 2px solid;
    background-color: transparent !important;
    padding: 4px 8px;
    min-width: 80px;
    height: 28px;
    font-size: 12px;
    transition: all 0.2s ease;
}

.color-btn:hover {
    background-color: var(--light-color) !important;
    transform: none;
}

.color-btn.active {
    box-shadow: 0 0 0 2px var(--panel-bg);
}

/* 调整颜色控制区域 */
.color-controls {
    margin-top: 10px;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--panel-bg);
    display: flex;
    gap: 10px;
    overflow-x: auto;
}

.color-group {
    display: flex;
    align-items: center;
    gap: 8px;
}




/* 调整最近颜色块大小 */
.recent-color {
    width: 20px;
    height: 20px;
    border-radius: 3px;
}

/* 修改：主按钮排成一排 */
.main-action-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.main-action-buttons .btn {
    min-width: 120px;
    padding: 10px 15px;
}

/* 折叠内容 */
.collapsible-content {
    display: none;
}

.collapsible-content.show {
    display: block;
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.toggle-icon.rotated {
    transform: rotate(90deg);
}

/* 调色盘弹窗样式 */
.color-palette-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.color-palette-modal.show {
    opacity: 1;
    pointer-events: auto;
}

/* 修改调色盘容器样式 */
.color-palette-container {
    background-color: var(--panel-bg);
    border-radius: var(--border-radius);
    padding: 15px;
    width: 90%;
    max-width: 420px;
    max-height: 80vh;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
}

/* 添加调色盘内容区域滚动 */
.color-palette-content {
    overflow-y: auto;
    flex-grow: 1;
    padding-right: 5px;
}

/* 添加色系分类标题 */
.color-category {
    margin: 15px 0 8px 0;
    font-size: 14px;
    font-weight: bold;
    color: var(--text-color);
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border-color);
}

/* 修改颜色网格布局 */
.color-palette-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

/* 调整颜色项大小 */
.color-palette-item {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid var(--panel-bg);
    transition: all 0.2s ease;
    position: relative;
}

/* 添加颜色名称提示 */
.color-palette-item:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--dark-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    margin-bottom: 5px;
    z-index: 10;
}

/* 调色盘页脚样式 */
.color-palette-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}


@media (max-width: 767px) {
    .btn-group {
        width: 100%;
        justify-content: space-between;
    }
    
    .btn-group .btn {
        flex: 1;
    }
    
    .color-picker {
        width: 100%;
        justify-content: space-between;
    }
    
    .recent-colors {
        flex-wrap: wrap;
    }

    .tag-panel {
        width: 280px;
        right: 10px;
    }

    .tag-panel-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tag-pair {
        grid-column: span 2;
    }
    
    /* 移动端主按钮垂直排列 */
    .main-action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* 移动端调整按钮位置 */
    .theme-btn {
        top: 10px;
        left: 10px;
    }
    
    .floating-btn {
        right: 10px;
        bottom: 10px;
    }
    
    .undo-btn {
        right: 60px;
    }
    
    .redo-btn {
        right: 110px;
    }
    
    /* 移动端调色盘 */
    .color-palette-grid {
        grid-template-columns: repeat(6, 1fr);
        
    }   /* 彩虹文字生成器弹窗样式 */
        .rainbow-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 2000;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        
        .rainbow-modal.show {
            opacity: 1;
            pointer-events: auto;
        }
        
        .rainbow-container {
            background-color: var(--panel-bg);
            border-radius: var(--border-radius);
            padding: 15px;
            width: 90%;
            max-width: 500px;
            max-height: 80vh;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
            display: flex;
            flex-direction: column;
        }
        
        .rainbow-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 5px 0;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 15px;
        }
        
        .rainbow-title {
            font-weight: bold;
            font-size: 18px;
            color: var(--text-color);
        }
        
        .rainbow-close {
            cursor: pointer;
            font-size: 24px;
            line-height: 1;
            color: var(--text-color);
        }
        
        .rainbow-content {
            flex-grow: 1;
            overflow-y: auto;
            padding-right: 5px;
        }
        
        .rainbow-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid var(--border-color);
        }
        
        .rainbow-preview {
            margin-top: 15px;
            padding: 15px;
            background-color: var(--preview-bg);
            border-radius: var(--border-radius);
            min-height: 60px;
            font-size: 18px;
            font-weight: bold;
            text-align: center;
        }
        
        .control-group {
            margin-bottom: 15px;
        }
        
        .control-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        
        .control-group input[type="number"] {
            padding: 8px;
            border-radius: 5px;
            border: 1px solid var(--border-color);
            width: 60px;
            background-color: var(--panel-bg);
            color: var(--text-color);
        }
        
        .control-group small {
            display: block;
            margin-top: 5px;
            font-size: 12px;
            color: var(--light-text);
        }
        
        .control-group textarea {
            width: 100%;
            height: 80px;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            resize: vertical;
            background-color: var(--panel-bg);
            color: var(--text-color);
        }
 
}