style.css

/* Modern, Elegant, Minimalist Design - Light Theme */

/* ==================== CSS Variables ==================== */
:root {
    /* Light Theme Colors */
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F9FAFB;
    --color-bg-elevated: #F3F4F6;
    --color-border: #E5E7EB;
    --color-border-strong: #D1D5DB;

    --color-text-primary: #111827;
    --color-text-secondary: #6B7280;
    --color-text-tertiary: #9CA3AF;

    --color-accent: #3B82F6;
    --color-accent-hover: #2563EB;
    --color-accent-subtle: #EFF6FF;

    --color-success: #10B981;
    --color-error: #EF4444;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.10);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== Reset & Base ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text-primary);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== Layout ==================== */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.app.file-dragging {
    outline: 3px dashed var(--color-accent);
    outline-offset: -3px;
}

/* ==================== Header ==================== */
.header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 0 var(--space-6);
    height: 64px;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.header-content {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-primary);
}

.logo svg {
    color: var(--color-accent);
}

.logo h1 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.03em;
}

.header-actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
    align-items: center;
}

.mode-switcher {
    display: flex;
    background: var(--color-bg-secondary);
    padding: 2px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.mode-btn {
    padding: 4px 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.mode-btn.active {
    background: var(--color-bg);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
}

.separator {
    width: 1px;
    height: 24px;
    background: var(--color-border);
    margin: 0 var(--space-2);
}

.options-group {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* ==================== Main Content ==================== */
.main {
    flex: 1;
    overflow: hidden;
}

.workspace {
    height: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.workspace.hidden {
    display: none;
}

/* ==================== Panel ==================== */
.panel {
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    border-right: 1px solid var(--color-border);
    min-width: 0;
    min-height: 0;
    /* Critical for grid/flex children to allow shrinking */
    height: 100%;
    overflow: hidden;
}

.panel.vertical-split {
    display: grid;
    grid-template-rows: 1fr 1fr;
    border-right: 1px solid var(--color-border);
}

.sub-panel {
    display: flex;
    flex-direction: column;
    min-height: 0;
    border-bottom: 1px solid var(--color-border);
}

.sub-panel:last-child {
    border-bottom: none;
}

/* DDL面板CodeMirror样式修复 - 确保编辑器内容不会跑到行号左侧 */
#diffWorkspace .sub-panel .panel-body {
    position: relative;
    overflow: hidden;
}

#diffWorkspace .sub-panel .CodeMirror {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* 确保CodeMirror gutters正确定位在左侧 */
#diffWorkspace .CodeMirror-gutters {
    left: 0 !important;
    position: absolute !important;
}

/* 确保CodeMirror内容区域在gutters右侧 */
#diffWorkspace .CodeMirror-sizer {
    margin-left: 48px !important;
    border-right-width: 30px !important;
}

/* 确保代码行正确对齐 */
#diffWorkspace .CodeMirror-lines {
    padding-left: 4px;
}

/* Markdown面板CodeMirror样式修复 - 确保编辑器内容不会跑到行号左侧 */
#markdownWorkspace .panel .panel-body {
    position: relative;
    overflow: hidden;
}

#markdownWorkspace .panel .CodeMirror {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* 确保CodeMirror gutters正确定位在左侧 */
#markdownWorkspace .CodeMirror-gutters {
    left: 0 !important;
    position: absolute !important;
}

/* 确保CodeMirror内容区域在gutters右侧 */
#markdownWorkspace .CodeMirror-sizer {
    margin-left: 48px !important;
    border-right-width: 30px !important;
}

/* 确保代码行正确对齐 */
#markdownWorkspace .CodeMirror-lines {
    padding-left: 4px;
}

/* ==================== Markdown Preview Fullscreen Mode ==================== */
/* Only affects markdownWorkspace, not other panels */
#markdownWorkspace.fullscreen-preview {
    grid-template-columns: 1fr;
}

#markdownWorkspace.fullscreen-preview>.panel:first-child {
    display: none;
}

#markdownWorkspace.fullscreen-preview>.panel:last-child {
    border-left: none;
}

/* Fullscreen button icon toggle - Important: use !important to override .hidden class */
#toggleFullscreenBtn .icon-expand {
    display: inline-block !important;
}

#toggleFullscreenBtn .icon-collapse {
    display: none !important;
}

#markdownWorkspace.fullscreen-preview #toggleFullscreenBtn .icon-expand {
    display: none !important;
}

#markdownWorkspace.fullscreen-preview #toggleFullscreenBtn .icon-collapse {
    display: inline-block !important;
}

/* Expand content width in fullscreen mode */
#markdownWorkspace.fullscreen-preview .markdown-preview {
    max-width: 1450px;
    padding: 40px 80px;
}

/* Transition for smooth effect */
#markdownWorkspace {
    transition: grid-template-columns 0.2s ease;
}


.panel-header.small {
    min-height: 32px;
    padding: var(--space-2) var(--space-6);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.btn-ghost.small {
    height: 24px;
    padding: 0 var(--space-2);
    font-size: 11px;
}

.panel:last-child {
    border-right: none;
}

.panel-header {
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-bg-secondary);
    min-height: 56px;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.panel-actions {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.panel-body {
    flex: 1;
    min-height: 0;
    /* Critical for flexbox scrolling */
    overflow: hidden;
    position: relative;
}

/* ==================== Editor ==================== */
.editor {
    width: 100%;
    height: 100%;
    padding: var(--space-6);
    background: transparent;
    color: var(--color-text-primary);
    border: none;
    resize: none;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.7;
    outline: none;
    overflow-y: auto;
    /* 添加垂直滚动 */
}

.editor::placeholder {
    color: var(--color-text-tertiary);
}

.editor.output {
    background: var(--color-bg-secondary);
    overflow-y: auto;
    /* 确保输出区域可以滚动 */
}

.editor.output code {
    font-family: var(--font-mono);
    white-space: pre;
    color: var(--color-text-primary);
}

/* ==================== Buttons ==================== */
.btn-primary {
    padding: 0 var(--space-4);
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 36px;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-ghost {
    padding: 0 var(--space-3);
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    height: 36px;
}

.btn-ghost:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-border-strong);
    color: var(--color-text-primary);
}

.btn-ghost:active {
    transform: scale(0.98);
}

.btn-icon {
    padding: var(--space-2);
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.btn-icon:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-border-strong);
    color: var(--color-text-primary);
}

/* ==================== Form Elements ==================== */
.select {
    padding: 0 var(--space-3);
    background: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-fast);
    height: 36px;
    outline: none;
}

.select:hover {
    border-color: var(--color-border-strong);
}

.select:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.input {
    padding: 0 var(--space-3);
    background: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 13px;
    height: 40px;
    outline: none;
    transition: all var(--transition-fast);
}

.input:hover {
    border-color: var(--color-border-strong);
}

.input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

/* ==================== Badge ==================== */
.badge {
    padding: 2px 6px;
    background: var(--color-bg-elevated);
    color: var(--color-text-tertiary);
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    line-height: 1.2;
    height: 18px;
}

.badge.detected {
    background: var(--color-accent-subtle);
    color: var(--color-accent);
}

/* ==================== Footer ==================== */
.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 0 var(--space-6);
    height: 40px;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.footer-content {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--color-text-tertiary);
}

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

.status.success {
    color: var(--color-success);
}

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

/* ==================== Modal ==================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
}

.modal-container {
    position: relative;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    width: 480px;
    max-height: 80vh;
    overflow: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    user-select: none;
}

.checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.checkbox span {
    font-weight: 400;
    color: var(--color-text-primary);
}

/* ==================== Scrollbar ==================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-strong);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-tertiary);
}

/* ==================== Animations ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.96);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-container {
    animation: fadeIn var(--transition-base);
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 var(--color-accent-subtle);
    }

    50% {
        box-shadow: 0 0 0 8px transparent;
    }
}

.btn-ghost.copied {
    animation: pulse 0.6s ease;
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .workspace {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }

    .panel {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .panel:last-child {
        border-bottom: none;
    }
}

/* ==================== Markdown Preview - Typora Style ==================== */
/* Note: .markdown-preview-container is applied to .panel-body */
.panel-body.markdown-preview-container {
    overflow-y: auto !important;
    overflow-x: hidden;
    padding: 30px 40px;
    background: #FFFFFF;
}

.markdown-preview {
    font-family: 'Open Sans', 'Clear Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.8;
    color: #333333;
    max-width: 860px;
    margin: 0 auto;
    word-wrap: break-word;
}

.markdown-preview .placeholder {
    color: #999;
    font-style: italic;
    text-align: center;
    padding: 40px 0;
}

/* Headings - Typora Style */
.markdown-preview h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 1rem 0 1.5rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #EAECEF;
    color: #000000;
    line-height: 1.25;
}

.markdown-preview h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem 0;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid #EAECEF;
    color: #000000;
    line-height: 1.25;
}

.markdown-preview h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 0.8rem 0;
    color: #000000;
    line-height: 1.25;
}

.markdown-preview h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.6rem 0;
    color: #000000;
}

.markdown-preview h5,
.markdown-preview h6 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1.2rem 0 0.5rem 0;
    color: #555555;
}

/* Paragraphs */
.markdown-preview p {
    margin: 0 0 1.2rem 0;
}

/* Links - Typora Style */
.markdown-preview a {
    color: #4183C4;
    text-decoration: none;
}

.markdown-preview a:hover {
    text-decoration: underline;
}

/* Lists - Clean Style */
.markdown-preview ul,
.markdown-preview ol {
    margin: 0 0 1.2rem 0;
    padding-left: 2rem;
}

.markdown-preview li {
    margin: 0.4rem 0;
}

.markdown-preview li>p {
    margin: 0;
}

.markdown-preview li>ul,
.markdown-preview li>ol {
    margin: 0.3rem 0;
}

/* Blockquote - Typora Style */
.markdown-preview blockquote {
    margin: 1rem 0;
    padding: 0.8rem 1rem;
    border-left: 4px solid #DDDDDD;
    background: #F8F8F8;
    color: #666666;
}

.markdown-preview blockquote p:last-child {
    margin-bottom: 0;
}

.markdown-preview blockquote blockquote {
    margin: 0.5rem 0;
}

/* Inline Code - Typora Style */
.markdown-preview code {
    font-family: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, 'Courier New', monospace;
    font-size: 0.9em;
    padding: 0.2em 0.4em;
    background: #F3F4F6;
    border-radius: 3px;
    color: #C7254E;
}

/* Code Blocks - Typora Dark Style */
.markdown-preview pre {
    margin: 1.2rem 0;
    padding: 1rem 1.2rem;
    background: #23241F;
    border-radius: 5px;
    overflow-x: auto;
}

.markdown-preview pre code {
    display: block;
    padding: 0;
    background: transparent;
    color: #F8F8F2;
    font-size: 0.9rem;
    line-height: 1.6;
    border-radius: 0;
}

/* Tables - Typora Style */
.markdown-preview .table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin: 1.2rem 0;
    -webkit-overflow-scrolling: touch;
}

.markdown-preview table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.markdown-preview th,
.markdown-preview td {
    padding: 0.6rem 1rem;
    border: 1px solid #DDDDDD;
    text-align: left;
    white-space: nowrap;
}

.markdown-preview td {
    white-space: normal;
    word-break: break-word;
    min-width: 80px;
}

.markdown-preview th {
    background: #F6F8FA;
    font-weight: 600;
}

.markdown-preview tr:nth-child(even) {
    background: #FAFBFC;
}

/* Horizontal Rule */
.markdown-preview hr {
    margin: 2rem 0;
    border: none;
    height: 2px;
    background: #EAECEF;
}

/* Images */
.markdown-preview img {
    max-width: 100%;
    height: auto;
    margin: 1rem 0;
    border-radius: 4px;
}

/* Strong & Emphasis */
.markdown-preview strong {
    font-weight: 700;
    color: #000000;
}

.markdown-preview em {
    font-style: italic;
}

/* Mermaid Diagrams - Clean Container */
.markdown-preview .mermaid-container {
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: #FAFBFC;
    border: 1px solid #E1E4E8;
    border-radius: 6px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: auto;
}

.markdown-preview .mermaid-container svg {
    max-width: none;
    height: auto;
}

/* Mermaid Export Buttons */
.mermaid-export-buttons {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 6px;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 10;
}

.markdown-preview .mermaid-container:hover .mermaid-export-buttons {
    opacity: 1;
}

.mermaid-export-btn {
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.mermaid-export-btn.svg-btn {
    background: #4183C4;
}

.mermaid-export-btn.png-btn {
    background: #28A745;
}

.mermaid-export-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.mermaid-export-btn:active {
    transform: translateY(0);
}

/* Mermaid Error */
.markdown-preview .mermaid-error {
    margin: 1rem 0;
    padding: 1rem;
    background: #FFF5F5;
    border: 1px solid #FED7D7;
    border-radius: 5px;
    color: #C53030;
    font-size: 0.9rem;
}

.markdown-preview .mermaid-error strong {
    display: block;
    margin-bottom: 0.5rem;
    color: #C53030;
}

.markdown-preview .mermaid-error pre {
    margin: 0.5rem 0 0 0;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.04);
    border: none;
    font-size: 0.85rem;
    color: #666;
}

/* Task Lists (GFM) */
.markdown-preview input[type="checkbox"] {
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* ==================== Code Block Container with Toolbar ==================== */
.markdown-preview .code-block-container {
    margin: 1.2rem 0;
    border-radius: 6px;
    overflow: hidden;
    background: #23241F;
    border: 1px solid #3e3e3e;
    position: relative;
}

.markdown-preview .code-block-container pre {
    margin: 0;
    border-radius: 0;
    border: none;
}

.code-block-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 12px;
    background: #1a1a1a;
    border-bottom: 1px solid #3e3e3e;
}

.code-toolbar-left {
    display: flex;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

/* Show buttons on hover */
.markdown-preview .code-block-container:hover .code-toolbar-left {
    opacity: 1;
    visibility: visible;
}

.code-toolbar-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #a0a0a0;
    background: transparent;
    border: 1px solid #4a4a4a;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.code-toolbar-btn:hover {
    color: #ffffff;
    background: #2a2a2a;
    border-color: #5a5a5a;
}

.code-toolbar-btn:active {
    transform: translateY(1px);
}

.code-toolbar-btn.loading {
    opacity: 0.6;
    cursor: wait;
}

.code-toolbar-btn.copied {
    color: #4ade80;
    border-color: #4ade80;
}

.code-toolbar-btn.feedback-success {
    color: #4ade80;
    border-color: #4ade80;
}

.code-toolbar-btn.feedback-info {
    color: #60a5fa;
    border-color: #60a5fa;
}

.code-toolbar-btn.feedback-error {
    color: #f87171;
    border-color: #f87171;
}

.code-toolbar-btn svg {
    flex-shrink: 0;
}

.code-language-label {
    font-size: 11px;
    font-weight: 600;
    color: #6a6a6a;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==================== Dropdown Menu ==================== */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.dropdown-arrow {
    margin-left: 2px;
    transition: transform var(--transition-fast);
}

.dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 140px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: 100;
}

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

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--space-2) var(--space-4);
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-primary);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-bg-elevated);
}

.dropdown-item:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* ==================== Export Loading Overlay ==================== */
.export-loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.export-loading-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.export-loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.export-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ==================== Output Format Switcher ==================== */
.output-format-switcher {
    display: flex;
    gap: var(--space-3);
    margin-left: var(--space-4);
    padding-left: var(--space-4);
    border-left: 1px solid var(--color-border);
}

.output-format-switcher label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.output-format-switcher label:hover {
    color: var(--color-text-primary);
}

.output-format-switcher input[type="radio"] {
    cursor: pointer;
    width: 14px;
    height: 14px;
    accent-color: var(--color-accent);
}

.output-format-switcher input[type="radio"]:checked+span {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* ==================== Checkbox Inline ==================== */
.checkbox-inline {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    user-select: none;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.checkbox-inline input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--color-accent);
}

.checkbox-inline span {
    font-weight: 500;
}

.checkbox-inline.hidden,
.hidden {
    display: none !important;
}

/* ==================== Toolbox ==================== */
.toolbox-workspace {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.toolbox-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.toolbox-tab {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-secondary);
}

.toolbox-tab:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-border-strong);
    color: var(--color-text-primary);
}

.toolbox-tab.active {
    background: var(--color-accent-subtle);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.tool-icon {
    font-size: 16px;
}

.toolbox-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6);
    background: var(--color-bg);
    display: flex;
    justify-content: center;
}

.tool-panel {
    display: none;
    max-width: 1200px;
    width: 100%;
}

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

.tool-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    flex-wrap: nowrap;
    white-space: nowrap;
}

/* Tech Panel Styles - Futuristic Theme */
/* Modern Panel Styles - Clean & Professional */
.tech-panel {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.tech-panel .tool-row {
    border: none;
    padding: 0;
    margin-bottom: var(--space-4);
}

.tech-panel .tool-row.current-time-row {
    background: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    justify-content: center;
    gap: var(--space-4);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.tech-label {
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-right: var(--space-4);
}

.tech-panel .tool-label {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.tech-panel .tool-input {
    background: #ffffff;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.tech-panel .tool-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.tech-panel .tool-select {
    background: #ffffff;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
}

/* Redesigned Flip Clock */
.flip-clock {
    display: flex;
    gap: 6px;
    perspective: 600px;
    padding: 8px 12px;
    background: #e2e8f0;
    border-radius: 12px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.flip-digit {
    position: relative;
    width: 40px;
    height: 60px;
    font-family: 'JetBrains Mono', 'Menlo', monospace;
    font-size: 36px;
    font-weight: 700;
    background: #1e293b;
    color: #f8fafc;
    border-radius: 6px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.flip-digit::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: rgba(0, 0, 0, 0.4);
    z-index: 10;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.1);
}

.flip-digit-inner {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    backface-visibility: hidden;
    line-height: 60px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.flip-digit.flipping .flip-digit-inner {
    animation: flip-animation 0.4s cubic-bezier(0.4, 0.0, 0.2, 1);
}

@keyframes flip-animation {
    0% {
        transform: rotateX(0deg);
    }

    100% {
        transform: rotateX(-360deg);
    }
}

/* Modern Buttons */
.tech-btn {
    height: 36px;
    padding: 0 16px;
    background: white;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.tech-btn:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    color: var(--color-text-primary);
}

.tech-btn:active {
    transform: translateY(0);
    box-shadow: none;
    background: #f1f5f9;
}

#timestampCopyBtn {
    background: #3b82f6;
    color: white;
    border: none;
    font-weight: 600;
}

#timestampCopyBtn:hover {
    background: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.tech-panel .tool-btn-action.primary {
    background: #3b82f6;
    border: none;
    color: white;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.tech-panel .tool-btn-action.primary:hover {
    background: #2563eb;
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.2);
}

.tech-panel .date-sep {
    color: #94a3b8;
    font-weight: 500;
    margin: 0 2px;
}

/* Timestamp Panel Specific Styles */
#toolPanelTimestamp {
    height: auto !important;
    min-height: auto !important;
    flex: 0 0 auto !important;
    align-self: flex-start !important;
}

/* 时间戳面板转换行容器边框 */
#toolPanelTimestamp>.tool-row:not(.current-time-row) {
    background: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-4) var(--space-5);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

/* 当时间戳面板激活时，让容器高度自适应 */
.toolbox-content:has(#toolPanelTimestamp.active) {
    align-items: flex-start;
}

/* Base64 Panel Specific Styles */
#toolPanelBase64 {
    height: auto !important;
    min-height: auto !important;
    flex: 0 0 auto !important;
    align-self: flex-start !important;
}

/* 当Base64面板激活时，让容器高度自适应 */
.toolbox-content:has(#toolPanelBase64.active) {
    align-items: flex-start;
}

.tech-panel .tool-input {
    background: #f8fafc;
    /* Slight off-white */
    border: 1px solid #cbd5e1;
    /* Slate-300 */
    color: #334155;
    /* Slate-700 */
    border-radius: 6px;
    height: 38px;
    /* Consistent height */
    padding: 0 12px;
    transition: all 0.2s ease;
    font-size: 13px;
    font-family: 'JetBrains Mono', 'Menlo', 'Consolas', monospace;
    /* Monospace for data */
    flex: 1;
    min-width: 0;
}

.tech-panel .tool-input:focus {
    background: #ffffff;
    border-color: #3b82f6;
    box-shadow: none;
    outline: none;
}

.tech-panel .tool-input::placeholder {
    color: #94a3b8;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    /* Sans-serif for placeholder */
}

.tech-panel .tool-textarea {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    color: #334155;
    border-radius: 6px;
    padding: 12px;
    transition: all 0.2s ease;
    font-size: 13px;
    font-family: 'JetBrains Mono', 'Menlo', 'Consolas', monospace;
    flex: 1;
    min-width: 0;
    resize: none;
    /* Disable manual resize */
    min-height: 80px;
    width: 100%;
    box-sizing: border-box;
}

.tech-panel .tool-textarea:focus {
    background: #ffffff;
    border-color: #3b82f6;
    box-shadow: none;
    outline: none;
}

#toolPanelBase64 .tool-textarea {
    min-height: 160px;
    height: 160px;
}

/* URL Panel Specific Styles */
#toolPanelUrl {
    height: auto !important;
    min-height: auto !important;
    flex: 0 0 auto !important;
    align-self: flex-start !important;
}

/* 当URL面板激活时，让容器高度自适应 */
.toolbox-content:has(#toolPanelUrl.active) {
    align-items: flex-start;
}

/* URL面板输入输出框样式与Base64保持一致 */
#toolPanelUrl .tool-textarea {
    min-height: 160px;
    height: 160px;
}

/* JWT Panel Specific Styles */
#toolPanelJwt {
    height: auto !important;
    min-height: auto !important;
    flex: 0 0 auto !important;
    align-self: flex-start !important;
}

/* 当JWT面板激活时，让容器高度自适应 */
.toolbox-content:has(#toolPanelJwt.active) {
    align-items: flex-start;
}

/* JWT面板输入框样式与Base64保持一致 */
#toolPanelJwt #jwtInput {
    min-height: 160px;
    height: 160px;
}

/* JWT Header高度翻倍后再增加50% (80px -> 120px) */
#toolPanelJwt #jwtHeader {
    min-height: 120px;
    height: 120px;
}

/* JWT Payload高度翻倍后再增加50% (160px -> 240px) */
#toolPanelJwt #jwtPayload {
    min-height: 240px;
    height: 240px;
}

/* Hash Panel Specific Styles */
#toolPanelHash {
    height: auto !important;
    min-height: auto !important;
    flex: 0 0 auto !important;
    align-self: flex-start !important;
}

/* 当哈希面板激活时，让容器高度自适应 */
.toolbox-content:has(#toolPanelHash.active) {
    align-items: flex-start;
}

/* 哈希面板输入框高度翻倍 */
#toolPanelHash #hashInput {
    min-height: 160px;
    height: 160px;
}

/* 哈希结果高度翻倍 (38px -> 76px)，鼠标指针样式 */
#toolPanelHash #hashMd5,
#toolPanelHash #hashSha1,
#toolPanelHash #hashSha256,
#toolPanelHash #hashSha512 {
    height: 76px;
    cursor: pointer;
    transition: all 0.2s ease;
}

/* 哈希结果悬停效果 */
#toolPanelHash #hashMd5:hover,
#toolPanelHash #hashSha1:hover,
#toolPanelHash #hashSha256:hover,
#toolPanelHash #hashSha512:hover {
    background: #e2e8f0;
    border-color: #94a3b8;
}

/* UUID/ID Panel Specific Styles */
#toolPanelUuid {
    height: auto !important;
    min-height: auto !important;
    flex: 0 0 auto !important;
    align-self: flex-start !important;
}

/* 当ID生成面板激活时，让容器高度自适应 */
.toolbox-content:has(#toolPanelUuid.active) {
    align-items: flex-start;
}

/* ID生成面板输出框高度翻倍 (320px -> 640px)，行距增大，字体增大 */
#toolPanelUuid #uuidOutput {
    min-height: 640px;
    height: 640px;
    line-height: 2.2;
    font-size: 15px;
}

/* UUID输出容器 - flex布局 */
#toolPanelUuid .uuid-output-container {
    display: flex;
    align-items: stretch;
    gap: 0;
}

/* UUID行号列 */
#toolPanelUuid .uuid-line-numbers {
    min-width: 50px;
    max-width: 50px;
    min-height: 640px;
    height: 640px;
    background: #e2e8f0;
    border: 1px solid #cbd5e1;
    border-right: none;
    border-radius: 6px 0 0 6px;
    padding: 12px 8px;
    font-family: 'JetBrains Mono', 'Menlo', 'Consolas', monospace;
    font-size: 15px;
    line-height: 2.2;
    color: #64748b;
    text-align: right;
    user-select: none;
    overflow-y: hidden;
}

/* 调整输出框左侧圆角 */
#toolPanelUuid .uuid-output-container #uuidOutput {
    border-radius: 0 6px 6px 0;
    flex: 1;
}

/* 输出框聚焦时移除蓝色边框 */
#toolPanelUuid #uuidOutput:focus {
    border-color: #cbd5e1;
    box-shadow: none;
    outline: none;
}

/* Password Generator Panel Styles */
#toolPanelPassword {
    height: auto !important;
    min-height: auto !important;
    flex: 0 0 auto !important;
    align-self: flex-start !important;
}

/* 当密码生成面板激活时，让容器高度自适应 */
.toolbox-content:has(#toolPanelPassword.active) {
    align-items: flex-start;
}

/* 密码选项行 */
#toolPanelPassword .password-options {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* 密码选项标签 */
#toolPanelPassword .password-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 12px;
    background: #f1f5f9;
    border-radius: 6px;
    transition: all 0.2s ease;
}

#toolPanelPassword .password-option:hover {
    background: #e2e8f0;
}

#toolPanelPassword .password-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 密码标签 */
#toolPanelPassword .password-label {
    font-size: 14px;
    color: #475569;
    margin-right: 8px;
}

/* 密码列表容器 */
#toolPanelPassword .password-list {
    width: 100%;
    min-height: 600px;
    max-height: 1000px;
    overflow-y: auto;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 12px;
}

/* 密码占位符 */
#toolPanelPassword .password-placeholder {
    color: #94a3b8;
    font-size: 14px;
    text-align: center;
    padding: 40px 0;
}

/* 密码行 */
#toolPanelPassword .password-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 8px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    transition: all 0.2s ease;
}

#toolPanelPassword .password-row:hover {
    border-color: #3b82f6;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
}

#toolPanelPassword .password-row:last-child {
    margin-bottom: 0;
}

/* 密码索引 */
#toolPanelPassword .password-index {
    min-width: 40px;
    flex-shrink: 0;
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
    text-align: right;
}

/* 密码文本 */
#toolPanelPassword .password-text {
    flex: 1;
    min-width: 0;
    font-family: 'JetBrains Mono', 'Menlo', 'Consolas', monospace;
    font-size: 15px;
    color: #1e293b;
    cursor: pointer;
    word-break: break-all;
    overflow-wrap: anywhere;
    transition: color 0.2s ease;
}

#toolPanelPassword .password-text:hover {
    color: #3b82f6;
}

/* 复制按钮 */
#toolPanelPassword .password-copy-btn {
    flex-shrink: 0;
    padding: 6px 10px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

#toolPanelPassword .password-copy-btn:hover {
    background: #e2e8f0;
    border-color: #cbd5e1;
}

.tech-panel .tool-textarea.small {
    min-height: 40px;
    height: 40px;
}

/* Result Input (Read-only) */
.tool-input.result {
    background: #f1f5f9;
    /* Slate-100 */
    border-color: #e2e8f0;
    color: #475569;
    cursor: default;
    font-weight: 500;
    flex: 1;
    /* Match flex behavior */
    min-width: 0;
}

.tool-input.result:focus {
    background: #f1f5f9;
    box-shadow: none;
    border-color: #cbd5e1;
}

/* Select Dropdown */
.tech-panel .tool-select {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: #334155;
    border-radius: 6px;
    height: 38px;
    padding: 0 32px 0 12px;
    /* Space for arrow */
    cursor: pointer;
    font-size: 13px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 16px;
    min-width: 80px;
    transition: all 0.2s ease;
}

.tech-panel .tool-select:hover {
    border-color: #94a3b8;
}

.tech-panel .tool-select:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    outline: none;
}

/* Date Parts Inputs (Small) */
.tool-input.small {
    width: 60px;
    min-width: 60px;
    text-align: center;
    padding: 0 4px;
    height: 38px;
    font-weight: 500;
}

.tool-btn-action {
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.tool-btn-action:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-border-strong);
    color: var(--color-text-primary);
}

.tool-btn-action.primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

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

.date-sep {
    font-size: 13px;
    color: var(--color-text-tertiary);
}

.date-parts-row {
    flex-wrap: nowrap;
    justify-content: space-between;
}

.date-parts-row .tool-label {
    min-width: 50px;
}

.date-parts-row .tool-input.result {
    min-width: 140px;
    flex: 0 0 auto;
}

.tool-textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--space-3);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--color-text-primary);
    resize: vertical;
}

.tool-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.tool-textarea.small {
    min-height: 80px;
}

.tool-textarea[readonly] {
    background: var(--color-bg);
}

/* ==================== GitHub Alert Styles ==================== */
.markdown-preview .alert {
    margin: 1rem 0;
    padding: 1rem 1rem 1rem 3rem;
    border-radius: 6px;
    border-left: 4px solid;
    position: relative;
}

.markdown-preview .alert::before {
    position: absolute;
    left: 0.75rem;
    top: 1rem;
    font-size: 1.1rem;
}

.markdown-preview .alert-title {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.markdown-preview .alert p {
    margin: 0.3rem 0;
}

.markdown-preview .alert p:last-child {
    margin-bottom: 0;
}

/* NOTE - 蓝色 */
.markdown-preview .alert-note {
    background: #dbeafe;
    border-color: #3b82f6;
}

.markdown-preview .alert-note::before {
    content: 'ℹ️';
}

.markdown-preview .alert-note .alert-title {
    color: #1d4ed8;
}

/* TIP - 绿色 */
.markdown-preview .alert-tip {
    background: #dcfce7;
    border-color: #22c55e;
}

.markdown-preview .alert-tip::before {
    content: '💡';
}

.markdown-preview .alert-tip .alert-title {
    color: #15803d;
}

/* IMPORTANT - 紫色 */
.markdown-preview .alert-important {
    background: #f3e8ff;
    border-color: #a855f7;
}

.markdown-preview .alert-important::before {
    content: '❗';
}

.markdown-preview .alert-important .alert-title {
    color: #7e22ce;
}

/* WARNING - 黄色/橙色 */
.markdown-preview .alert-warning {
    background: #fef3c7;
    border-color: #f59e0b;
}

.markdown-preview .alert-warning::before {
    content: '⚠️';
}

.markdown-preview .alert-warning .alert-title {
    color: #b45309;
}

/* CAUTION - 红色 */
.markdown-preview .alert-caution {
    background: #fee2e2;
    border-color: #ef4444;
}

.markdown-preview .alert-caution::before {
    content: '🔴';
}

.markdown-preview .alert-caution .alert-title {
    color: #dc2626;
}

/* ==================== Image Lightbox ==================== */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    cursor: zoom-out;
}

.lightbox-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 95vw;
    max-height: 95vh;
    background: white;
    border-radius: 8px;
    padding: 24px;
    overflow: auto;
    cursor: default;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: lightbox-zoom-in 0.3s ease;
}

@keyframes lightbox-zoom-in {
    from {
        transform: scale(0.9);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.lightbox-content svg {
    display: block;
    max-width: 100%;
    height: auto;
}

.lightbox-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10001;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}

.lightbox-close svg {
    width: 20px;
    height: 20px;
}

.lightbox-hint {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    font-family: var(--font-sans);
}

/* Mermaid Toolbar Update */
.mermaid-toolbar {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 6px;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 10;
}

.mermaid-container:hover .mermaid-toolbar {
    opacity: 1;
}

.mermaid-zoom-btn {
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    color: white;
    background: #6366f1;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.mermaid-zoom-btn:hover {
    background: #4f46e5;
    transform: translateY(-1px);
}

.mermaid-zoom-btn:active {
    transform: translateY(0);
}

/* Lightbox Zoom Controls */
.lightbox-zoom-controls {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border-radius: 8px;
    z-index: 10001;
}

.lightbox-zoom-btn {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.lightbox-zoom-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.lightbox-zoom-btn:active {
    transform: scale(0.95);
}

.lightbox-zoom-btn svg {
    width: 18px;
    height: 18px;
}

.lightbox-zoom-level {
    color: white;
    font-size: 13px;
    font-weight: 500;
    min-width: 50px;
    text-align: center;
    padding: 0 8px;
}

/* Lightbox Image Wrapper */
.lightbox-image-wrapper {
    display: inline-block;
    cursor: grab;
    transform-origin: center center;
    transition: none;
    background: white;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* Update lightbox content for zoom support */
.lightbox-content {
    max-width: 95vw;
    max-height: 95vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: 0;
    padding: 0;
    overflow: visible;
    cursor: default;
    box-shadow: none;
    animation: none;
}

.lightbox-image-wrapper:active {
    cursor: grabbing;
}

.lightbox-image-wrapper svg,
.lightbox-image-wrapper img {
    display: block;
    max-width: none;
    max-height: none;
}

/* ==================== New Toolbox Panels ==================== */

/* JSON Diff */
.json-diff-inputs {
    display: flex;
    gap: var(--space-4);
    align-items: stretch;
}

.json-diff-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.json-diff-col .tool-textarea {
    flex: 1;
    min-height: 160px;
}

.json-diff-output {
    font-family: var(--font-mono);
    font-size: 13px;
    background: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-4);
    min-height: 120px;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.6;
    color: var(--color-text-primary);
}

.diff-line { padding: 1px 4px; border-radius: 2px; }
.diff-added { background: #dcfce7; color: #166534; }
.diff-removed { background: #fee2e2; color: #991b1b; }
.diff-unchanged { color: var(--color-text-tertiary); }
.diff-key { font-weight: 600; }

/* Color Converter */
.tool-color-picker {
    width: 40px;
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px;
    cursor: pointer;
    background: var(--color-bg);
}

.color-preview-box {
    width: 100%;
    height: 48px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    transition: background 0.2s;
}

/* Cron Presets */
.cron-preset {
    font-size: 12px !important;
    padding: 4px 10px !important;
}

/* Code Diff - IDE-style side-by-side */
.code-diff-panel.active {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: var(--space-4) !important;
    max-width: 100%;
}

.cdiff-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
}

.cdiff-toolbar-left,
.cdiff-toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.code-diff-option {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: 12px;
    color: var(--color-text-secondary);
    cursor: pointer;
    white-space: nowrap;
}

.code-diff-option input[type="checkbox"] {
    accent-color: var(--color-accent);
}

.code-diff-stats {
    display: flex;
    gap: var(--space-3);
    font-size: 12px;
    margin-left: var(--space-3);
}

.cdiff-stat-add { color: #166534; font-weight: 600; }
.cdiff-stat-rm { color: #991b1b; font-weight: 600; }
.cdiff-stat-mod { color: #92400e; font-weight: 600; }
.cdiff-stat-eq { color: var(--color-text-tertiary); }

/* Diff navigation */
.cdiff-nav {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-left: var(--space-2);
}

.cdiff-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.cdiff-nav-btn:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-border-strong);
    color: var(--color-text-primary);
}

.cdiff-nav-pos {
    font-size: 11px;
    color: var(--color-text-tertiary);
    min-width: 32px;
    text-align: center;
}

/* Editable diff editor */
.cdiff-editor-container {
    display: flex;
    flex: 1;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    min-height: 500px;
}

.cdiff-pane-edit {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.cdiff-input-header {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-tertiary);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    user-select: none;
}

.cdiff-edit-area {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.cdiff-gutter {
    width: 48px;
    flex-shrink: 0;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.02);
    border-right: 1px solid var(--color-border);
    user-select: none;
}

.cdiff-gutter-line {
    height: 20px;
    line-height: 20px;
    text-align: right;
    padding-right: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-tertiary);
}

.cdiff-gutter-line.del {
    background: #ffe4e6;
    color: #be123c;
}

.cdiff-gutter-line.add {
    background: #dcfce7;
    color: #15803d;
}

.cdiff-editor-wrap {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.cdiff-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    pointer-events: none;
    overflow: hidden;
}

.cdiff-backdrop-line {
    height: 20px;
    width: 100%;
}

.cdiff-backdrop-line.del {
    background: #fff1f2;
}

.cdiff-backdrop-line.add {
    background: #f0fdf4;
}

.cdiff-textarea {
    position: relative;
    width: 100%;
    height: 100%;
    margin: 0;
    border: none;
    outline: none;
    resize: none;
    padding: 0 12px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 20px;
    tab-size: 4;
    white-space: pre;
    overflow: auto;
    background: transparent;
    color: var(--color-text-primary);
    z-index: 1;
}

.cdiff-textarea::placeholder {
    color: var(--color-text-tertiary);
}

.cdiff-divider {
    width: 1px;
    background: var(--color-border-strong);
    flex-shrink: 0;
}

/* Code Diff Fullscreen */
.code-diff-panel:fullscreen {
    background: var(--color-bg);
    padding: var(--space-6) !important;
    overflow-y: auto;
}

.code-diff-panel:fullscreen .cdiff-editor-container {
    min-height: 0;
    flex: 1;
}