.text-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 20px;
}

.editors-container {
    display: flex;
    gap: 20px;
    flex: 1;
    min-height: 0;
}

.text-input-section, .text-output-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.diff-center-controls {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    min-width: 120px;
}

.diff-center-controls .btn-primary {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    padding: 20px 12px;
    min-height: 100px;
    font-weight: 600;
    border-radius: 8px;
}

.text-input-section textarea {
    flex: 1;
    min-height: 300px;
}

/* 差异显示样式 */
.diff-display-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.diff-header {
    display: flex;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.diff-column-header {
    flex: 1;
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.diff-column-header:first-child {
    border-right: 1px solid var(--border-color);
}

.diff-label {
    font-weight: 600;
    color: var(--text-primary);
}

.diff-stats {
    font-size: 12px;
    color: var(--text-secondary);
    padding-top: 2px;
}

.diff-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    
}

.diff-toolbar-actions {
    display: flex;
    gap: 8px;
    flex: 1;
    padding-left: 16px;
    padding-right: 16px;
}

.diff-content {
    display: flex;
    max-height: 85vh;
    overflow-y: auto;
    background-color: var(--bg-tertiary);
}

.diff-column {
    flex: 1;
    /* 移除背景色，避免与差异行背景色叠加导致视觉不一致 */
    background-color: transparent;
}

.diff-column:first-child {
    /* border-right: 1px solid var(--border-color); */
}

.diff-line {
    display: flex;
    align-items: center;
    min-height: 24px;
    position: relative;
    font-family: var(--font-family-mono);
    font-size: 13px;
    line-height: 1.5;
    border-bottom: 1px solid var(--border-light);
}

.diff-line:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.line-number {
    width: 40px;
    padding: 0 8px;
    text-align: right;
    color: var(--text-muted);
    border-right: 1px solid var(--border-color);
    border-left: 1px solid var(--border-color);
    font-size: 11px;
    flex-shrink: 0;
}

.line-content {
    padding: 0 12px;
    flex: 1;
    white-space: pre-wrap;
    word-break: break-all;
    overflow-x: hidden;
}

/* 为merge按钮留出空间 */
/* .diff-original .line-content {
    padding-right: 80px;
}

.diff-changed .line-content {
    padding-left: 80px;
} */

.line-content.empty {
    background-color: rgba(128, 128, 128, 0.1);
    min-height: 20px;
}

/* 不同类型的差异行 */
.diff-line-unchanged {
    background-color: transparent;
}

.diff-line-added {
    background-color: transparent;
}

.diff-line-deleted {
    background-color: transparent;
}

.diff-line-modified {
    background-color: transparent;
}

/* 按照文本位置设置背景颜色 */
.diff-original .diff-line-added,
.diff-original .diff-line-deleted,
.diff-original .diff-line-modified,
.diff-original .diff-block-header-deleted,
.diff-original .diff-block-header-added,
.diff-original .diff-block-header-modified,
.diff-original .diff-block-header-mixed
{
    background-color: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--error-color);
}

.diff-changed .diff-line-added,
.diff-changed .diff-line-deleted,
.diff-changed .diff-line-modified,
.diff-changed .diff-block-header-deleted,
.diff-changed .diff-block-header-added,
.diff-changed .diff-block-header-modified,
.diff-changed .diff-block-header-mixed
{
    background-color: rgba(34, 197, 94, 0.1);
    border-left: 3px solid var(--success-color);
}

/* 字符级差异高亮 */
.char-diff-removed {
    background-color: var(--error-deep);
    color: white;
    /* text-decoration: line-through; */
    padding: 1px 2px;
    border-radius: 4px;
}

.char-diff-added {
    background-color: var(--accent-light);
    color: white;
    padding: 1px 2px;
    border-radius: 4px;
}

/* Merge操作按钮 */
.merge-actions {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    display: none;
    gap: 4px;
}

.merge-to-original {
    background-color: var(--accent-light);
    border: 1px solid var(--accent-color);
    color: white;
}

.merge-to-original:hover {
    background-color: var(--primary-hover);
    border: 1px solid var(--primary-hover);
}

.merge-to-changed {
    background-color: var(--error-deep);
    border: 1px solid var(--error-deep);
    color: white;
}

.merge-to-changed:hover {
    background-color: var(--error-color);
    border: 1px solid var(--error-color);
}

/* 右侧（修改后文本）的merge按钮位置调整到左边 */
.diff-changed .merge-actions {
    left: 8px;
    right: auto;
}

.diff-line:hover .merge-actions {
    display: flex;
}

.merge-btn {
    min-width: 60px;
    height: 24px;
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    font-weight: bold;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

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

.merge-btn.merge-to-original {
    background-color: #8b5cf6;
    color: white;
}

.merge-btn.merge-to-changed {
    background-color: #06b6d4;
    color: white;
}

.merge-btn.merge-block-to-original {
    background-color: var(--accent-light);
    color: white;
    padding: 4px 8px;
    font-size: 11px;
}

.merge-btn.merge-block-to-changed {
    background-color: var(--error-deep);
    color: white;
    padding: 4px 8px;
    font-size: 11px;
}

/* 差异块样式 */
.diff-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background-color: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    font-weight: 500;
}

.diff-block-header-added {
    background-color: rgba(34, 197, 94, 0.15);
    border-left: 3px solid var(--success-color);
}

.diff-block-header-deleted {
    background-color: rgba(239, 68, 68, 0.15);
    border-left: 3px solid var(--error-color);
}

.diff-block-header-modified {
    background-color: rgba(251, 191, 36, 0.15);
    border-left: 3px solid #fbbf24;
}

.diff-block-header-mixed {
    background-color: rgba(139, 92, 246, 0.15);
    border-left: 3px solid #8b5cf6;
}

/* 根据左右侧位置覆盖差异块头部的样式 */
.diff-original .diff-block-header-added,
.diff-original .diff-block-header-deleted,
.diff-original .diff-block-header-modified,
.diff-original .diff-block-header-mixed {
    background-color: rgba(239, 68, 68, 0.15);
    border-left: 3px solid var(--error-color);
}

.diff-changed .diff-block-header-added,
.diff-changed .diff-block-header-deleted,
.diff-changed .diff-block-header-modified,
.diff-changed .diff-block-header-mixed {
    background-color: rgba(34, 197, 94, 0.15);
    border-left: 3px solid var(--success-color);
}

.block-line-range {
    color: var(--text-secondary);
    font-family: var(--font-family-mono);
    font-size: 11px;
}

.block-summary {
    color: var(--text-primary);
    font-weight: 600;
    margin-left: 12px;
}

.block-merge-actions {
    display: flex;
    gap: 4px;
}

/* 块头部右侧操作区域 */
.block-actions-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 下一个差异按钮 */
.next-diff-btn {
    padding: 4px 8px;
    border: 1px solid var(--accent-light);
    border-radius: 4px;
    background-color: var(--accent-light);
    color: white;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    margin-left: 12px;
}

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

.diff-block-content {
    /* 移除背景色，避免与差异行背景色冲突 */
    background-color: transparent;
}

/* 块内差异行的特殊样式 */
.diff-block-content .diff-line {
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.diff-block-content .diff-line:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

/* 确保块内差异行的样式正确应用（提高选择器优先级） */
.diff-original .diff-block-content .diff-line-added,
.diff-original .diff-block-content .diff-line-deleted,
.diff-original .diff-block-content .diff-line-modified {
    background-color: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--error-color);
}

.diff-changed .diff-block-content .diff-line-added,
.diff-changed .diff-block-content .diff-line-deleted,
.diff-changed .diff-block-content .diff-line-modified {
    background-color: rgba(34, 197, 94, 0.1);
    border-left: 3px solid var(--success-color);
}



/* 差异内容滚动条样式 */
.diff-content::-webkit-scrollbar {
    width: 6px;
}

.diff-content::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.diff-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.diff-content::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .text-container {
        height: auto;
        gap: 16px;
    }
    
    .editors-container {
        flex-direction: column;
        gap: 16px;
        margin-bottom: 16px;
    }
    
    .diff-center-controls {
        flex-direction: row;
        justify-content: center;
        padding: 16px;
        min-width: auto;
    }
    
    .diff-center-controls .btn-primary {
        writing-mode: horizontal-tb;
        text-orientation: mixed;
        padding: 12px 20px;
        min-height: auto;
        min-width: 120px;
    }
    
    .diff-content {
        max-height: 300px;
    }
    
    .diff-toolbar {
        padding: 8px 12px;
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }
    
    
    .diff-column-header {
        padding: 8px 12px;
    }
    
    .diff-label {
        font-size: 14px;
    }
    
    .diff-stats {
        font-size: 11px;
    }
    
    .diff-line {
        min-height: 28px;
        font-size: 12px;
    }
    
    .line-number {
        width: 35px;
        padding: 0 6px;
    }
    
    
    .merge-btn {
        min-width: 50px;
        height: 20px;
        padding: 2px 6px;
        font-size: 10px;
    }
    
    .diff-block-header {
        padding: 6px 8px;
        font-size: 11px;
    }
    
    .block-line-range {
        font-size: 10px;
    }
    
    .block-summary {
        margin-left: 8px;
        font-size: 11px;
    }
    
    .merge-btn.merge-block-to-original,
    .merge-btn.merge-block-to-changed {
        padding: 3px 6px;
        font-size: 10px;
    }
    
    /* 移动端字符级差异高亮优化 */
    .char-diff-removed,
    .char-diff-added {
        padding: 1px;
        font-size: 14px;
    }
    
    /* 移动端merge按钮空间调整 */
    .diff-original .line-content {
        padding-right: 60px;
    }
    
    .diff-changed .line-content {
        padding-left: 60px;
    }
    
    /* 移动端块头部操作优化 */
    .block-actions-right {
        flex-direction: column;
        gap: 8px;
    }
    
    .next-diff-btn {
        font-size: 10px;
        padding: 3px 6px;
    }
}

/* 中等屏幕优化 */
@media (max-width: 1024px) and (min-width: 769px) {
    .block-actions-right {
        gap: 8px;
    }
    
    .next-diff-btn {
        font-size: 10px;
        padding: 3px 6px;
    }
}

/* 文本差异工具专用样式扩展 */

/* 算法解释样式 */
.algorithm-explanation {
    margin: 24px 0;
}

.algorithm-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.algorithm-item:hover {
    border-color: var(--accent-light);
}

.algorithm-item h4 {
    color: var(--text-primary);
    margin: 0 0 12px 0;
    font-size: 16px;
}

.algorithm-steps {
    margin: 16px 0;
}

.step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 8px;
    gap: 12px;
}

.step-label {
    color: var(--accent-light);
    font-weight: 600;
    font-size: 14px;
    min-width: 60px;
}

.step-description {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.4;
}

/* 差异类型展示样式 */
.diff-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin: 16px 0;
}

.diff-type {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.type-label {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    min-width: 80px;
    text-align: center;
}

.type-label.added {
    background: var(--success-color);
    color: white;
}

.type-label.deleted {
    background: var(--error-color);
    color: white;
}

.type-label.modified {
    background: var(--warning-color);
    color: white;
}

.type-label.unchanged {
    background: var(--text-tertiary);
    color: var(--text-primary);
}

.type-description {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.4;
}

/* 内容场景样式 */
.content-scenarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 24px 0;
}

.data-scenarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 24px 0;
}

.scenario-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    transition: all 0.3s ease;
}

.scenario-item:hover {
    border-color: var(--accent-light);
    transform: translateY(-2px);
}

.scenario-item h4 {
    color: var(--text-primary);
    margin: 0 0 12px 0;
    font-size: 16px;
}

.scenario-item ul {
    margin: 8px 0 0 0;
    padding-left: 16px;
}

.scenario-item li {
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-secondary);
}

/* VCS对比样式 */
.vcs-comparison {
    margin: 24px 0;
}

.vcs-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.vcs-item:hover {
    border-color: var(--accent-light);
}

.vcs-item h4 {
    color: var(--text-primary);
    margin: 0 0 12px 0;
    font-size: 16px;
}

.vcs-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin: 16px 0;
}

.feature-detail {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
}

.feature-detail h5 {
    color: var(--accent-light);
    margin: 0 0 8px 0;
    font-size: 14px;
}

.code-examples {
    font-family: var(--font-family-mono);
    font-size: 12px;
    line-height: 1.6;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px;
    margin: 8px 0;
}

.code-examples code {
    color: var(--accent-light);
    background: transparent;
    padding: 0;
    border-radius: 0;
}

/* 差异格式样式 */
.diff-formats {
    margin: 24px 0;
}

.format-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.format-item:hover {
    border-color: var(--accent-light);
}

.format-item h4 {
    color: var(--text-primary);
    margin: 0 0 12px 0;
    font-size: 16px;
}

.format-example {
    margin: 16px 0;
}

.format-example pre {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    margin: 0 0 12px 0;
    overflow-x: auto;
    font-family: var(--font-family-mono);
    font-size: 12px;
    line-height: 1.4;
}

.format-example code {
    color: var(--text-primary);
    background: transparent;
    padding: 0;
    border-radius: 0;
}

.format-explanation {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
}

.format-explanation ul {
    margin: 0;
    padding-left: 16px;
}

.format-explanation li {
    margin-bottom: 4px;
    font-size: 13px;
    color: var(--text-secondary);
}

.format-explanation code {
    background: var(--bg-tertiary);
    color: var(--accent-light);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: var(--font-family-mono);
    font-size: 12px;
}

/* 现代工具生态样式 */
.modern-tools {
    margin: 24px 0;
}

.tool-category {
    margin-bottom: 32px;
}

.tool-category h4 {
    color: var(--text-primary);
    margin: 0 0 16px 0;
    font-size: 18px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
}

.tool-category .tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.tool-category .tool-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    transition: all 0.3s ease;
}

.tool-category .tool-item:hover {
    border-color: var(--accent-light);
    transform: translateY(-2px);
}

.tool-category .tool-item h5 {
    color: var(--text-primary);
    margin: 0 0 8px 0;
    font-size: 14px;
}

.tool-category .tool-item h5 a {
    color: var(--accent-light);
    text-decoration: none;
}

.tool-category .tool-item h5 a:hover {
    text-decoration: underline;
}

.tool-category .tool-item p {
    margin: 0;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* 文档样式扩展响应式优化 */
@media (max-width: 768px) {
    .diff-types,
    .content-scenarios,
    .data-scenarios,
    .vcs-features,
    .tool-category .tools-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .algorithm-item,
    .scenario-item,
    .vcs-item,
    .format-item {
        padding: 16px;
    }
    
    .format-example pre,
    .code-examples {
        padding: 12px;
        font-size: 11px;
    }
    
    .step-item {
        flex-direction: column;
        gap: 4px;
    }
    
    .step-label {
        min-width: auto;
    }
}