/* ===== 全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --success-color: #10b981;
    --success-hover: #059669;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --bg-color: #f8fafc;
    --sidebar-bg: #ffffff;
    --text-color: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --hover-bg: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --code-bg: #f6f8fa;
    --selected-bg: #eff6ff;
    --selected-border: #3b82f6;
    --modal-bg: #ffffff;
    --table-header-bg: #f6f8fa;
    --table-header-text: #1e293b;
    --lib-panel-width: 320px;
    --ai-panel-width: 420px;
}

/* 夜间模式 */
body.dark-mode {
    --bg-color: #1e293b;
    --sidebar-bg: #0f172a;
    --text-color: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --hover-bg: #1e293b;
    --code-bg: #1e293b;
    --selected-bg: #1e3a5f;
    --selected-border: #3b82f6;
    --modal-bg: #0f172a;
    --table-header-bg: #1e293b;
    --table-header-text: #f1f5f9;
}

/* 蓝色主题 */
body.blue-mode {
    --bg-color: #eff6ff;
    --sidebar-bg: #dbeafe;
    --text-color: #1e3a5f;
    --text-secondary: #5b7fa5;
    --border-color: #bfdbfe;
    --hover-bg: #dbeafe;
    --code-bg: #dbeafe;
    --selected-bg: #93c5fd;
    --selected-border: #2563eb;
    --modal-bg: #eff6ff;
    --table-header-bg: #dbeafe;
    --table-header-text: #1e3a5f;
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
}

/* 粉色主题 */
body.pink-mode {
    --bg-color: #fdf2f8;
    --sidebar-bg: #fce7f3;
    --text-color: #701a3e;
    --text-secondary: #9d4e6c;
    --border-color: #fbcfe8;
    --hover-bg: #fce7f3;
    --code-bg: #fce7f3;
    --selected-bg: #f9a8d4;
    --selected-border: #ec4899;
    --modal-bg: #fdf2f8;
    --table-header-bg: #fce7f3;
    --table-header-text: #701a3e;
    --primary-color: #ec4899;
    --primary-hover: #db2777;
}

body.blue-mode .markdown-body,
body.pink-mode .markdown-body,
body.dark-mode .markdown-body {
    color: var(--text-color);
}

body.blue-mode .markdown-body h1,
body.blue-mode .markdown-body h2,
body.blue-mode .markdown-body h3,
body.blue-mode .markdown-body h4,
body.blue-mode .markdown-body h5,
body.blue-mode .markdown-body h6,
body.pink-mode .markdown-body h1,
body.pink-mode .markdown-body h2,
body.pink-mode .markdown-body h3,
body.pink-mode .markdown-body h4,
body.pink-mode .markdown-body h5,
body.pink-mode .markdown-body h6 {
    color: var(--text-color);
    border-color: var(--border-color);
}

body.blue-mode .markdown-body code,
body.pink-mode .markdown-body code {
    background-color: var(--code-bg);
}

body.blue-mode .markdown-body pre,
body.pink-mode .markdown-body pre {
    background-color: var(--code-bg);
}

body.blue-mode .modal-content,
body.pink-mode .modal-content {
    background: var(--modal-bg);
    color: var(--text-color);
}

body.blue-mode .markdown-body table th,
body.pink-mode .markdown-body table th {
    background-color: var(--table-header-bg);
    color: var(--table-header-text);
}

body.blue-mode .markdown-body table td,
body.pink-mode .markdown-body table td {
    border-color: var(--border-color);
}

body.blue-mode .markdown-body blockquote,
body.pink-mode .markdown-body blockquote {
    border-left-color: var(--border-color);
    color: var(--text-secondary);
}

body.blue-mode .welcome-message,
body.pink-mode .welcome-message {
    color: var(--text-secondary);
}

body.blue-mode .welcome-message h3,
body.pink-mode .welcome-message h3 {
    color: var(--text-color);
}

body.dark-mode .markdown-body h1,
body.dark-mode .markdown-body h2,
body.dark-mode .markdown-body h3,
body.dark-mode .markdown-body h4,
body.dark-mode .markdown-body h5,
body.dark-mode .markdown-body h6 {
    color: var(--text-color);
    border-color: var(--border-color);
}

body.dark-mode .markdown-body code {
    background-color: var(--code-bg);
    color: #e2e8f0;
}

body.dark-mode .markdown-body pre {
    background-color: var(--code-bg);
}

body.dark-mode .markdown-body table th {
    background-color: var(--table-header-bg);
    color: var(--table-header-text);
}

body.dark-mode .markdown-body table td {
    border-color: var(--border-color);
}

body.dark-mode .markdown-body blockquote {
    border-left-color: var(--border-color);
    color: var(--text-secondary);
}

body.dark-mode .modal-content {
    background: var(--modal-bg);
    color: var(--text-color);
}

body.dark-mode .welcome-message {
    color: var(--text-secondary);
}

body.dark-mode .welcome-message h3 {
    color: var(--text-color);
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", "Noto Sans SC", "Source Han Sans SC", "Source Han Sans CN", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow: hidden;
    font-feature-settings: 'liga' 1, 'calt' 1; /* 启用连字和上下文替代 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== 应用容器 ===== */
.app-container {
    display: grid;
    grid-template-columns: var(--lib-panel-width) 1fr 0;
    height: 100vh;
    gap: 0;
    transition: grid-template-columns 0.3s ease;
}

/* 侧边栏折叠状态 */
.app-container.sidebar-collapsed {
    grid-template-columns: 0 1fr 0;
}

.app-container.sidebar-collapsed .library-panel {
    transform: translateX(-100%);
    opacity: 0;
    pointer-events: none;
}

/* ===== Library 侧边栏 ===== */
.library-panel {
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease;
    position: relative;
}

/* 拖拽调整宽度手柄 */
.resize-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 5px;
    cursor: col-resize;
    z-index: 10;
}

.resize-handle::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 1px;
    width: 3px;
    transition: background 0.2s;
}

.resize-handle:hover::after,
.resize-handle.dragging::after {
    background: var(--primary-color);
    border-radius: 2px;
}

.library-panel > .resize-handle {
    right: -2px;
}

.ai-panel > .resize-handle {
    left: -2px;
}

.library-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.library-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
}

.library-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.auth-btn {
    max-width: 132px;
    min-width: 40px;
    padding: 8px 10px;
}

.auth-btn span {
    display: inline-block;
    max-width: 86px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 底部操作栏 */
.library-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    justify-content: space-between;
    background: var(--sidebar-bg);
}

.footer-btn {
    flex: 1;
    justify-content: center;
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 500;
}

/* 圆形图标按钮 */
.icon-btn-round {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.icon-btn-round:hover:not(:disabled) {
    transform: scale(1.08);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 搜索栏 */
.search-bar {
    padding: 12px 20px;
    background: var(--hover-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
}

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

.search-close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-close-btn:hover {
    background: var(--sidebar-bg);
    color: var(--text-color);
}

/* 高亮搜索结果 */
.file-item.search-match {
    background: #fffbeb;
}

body.dark-mode .file-item.search-match {
    background: #422006;
}

.file-item.search-match .file-name {
    color: var(--primary-color);
    font-weight: 500;
}

/* ===== 面包屑 ===== */
.breadcrumb {
    padding: 12px 20px;
    background: var(--hover-bg);
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    overflow-x: auto;
    white-space: nowrap;
}

.breadcrumb-item {
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.breadcrumb-item:hover {
    background: var(--sidebar-bg);
    color: var(--primary-color);
}

.breadcrumb-item.active {
    color: var(--text-color);
    font-weight: 500;
}

.breadcrumb-item::after {
    content: '/';
    margin: 0 8px;
    color: var(--border-color);
}

.breadcrumb-item:last-child::after {
    content: '';
}

/* ===== 文件列表 ===== */
.file-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
    margin-bottom: 0;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    margin-bottom: 4px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    gap: 12px;
    user-select: none;
    position: relative;
}

.file-item:hover {
    background: var(--hover-bg);
}

.file-item.selected {
    background: var(--selected-bg);
    border-left: 3px solid var(--selected-border);
}

.file-item.folder {
    font-weight: 500;
}

.file-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-size: 14px;
    color: var(--text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-meta {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* 文件项的"..."菜单按钮 */
.file-menu-btn {
    display: none;
    position: absolute;
    right: 12px;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.file-item:hover .file-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-menu-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.loading, .empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

/* 无搜索结果样式 */
.no-search-result {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* ===== 预览面板 ===== */
.preview-panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--sidebar-bg);
}

.preview-header {
    padding: 20px 32px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--sidebar-bg);
    box-shadow: var(--shadow-sm);
    gap: 12px;
}

/* 侧边栏折叠按钮 */
.sidebar-toggle-btn {
    width: 36px;
    height: 36px;
    min-width: 36px;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
    margin: 0;
    flex-shrink: 0;
}

.sidebar-toggle-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 折叠状态下的按钮样式 */
.app-container.sidebar-collapsed .sidebar-toggle-btn {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.app-container.sidebar-collapsed .sidebar-toggle-btn:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.preview-title {
    flex: 1;
    min-width: 0;
    margin: 0;
}

.preview-title h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
    margin: 0 0 4px 0;
}

.file-path {
    font-size: 13px;
    color: var(--text-secondary);
}

.preview-actions {
    display: flex;
    gap: 12px;
}

.preview-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    user-select: text;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

.welcome-message {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.welcome-message svg {
    opacity: 0.3;
    margin-bottom: 24px;
}

.welcome-message h3 {
    font-size: 24px;
    color: var(--text-color);
    margin-bottom: 12px;
}

.welcome-message p {
    font-size: 15px;
    margin-bottom: 8px;
}

.welcome-message .tip {
    margin-top: 24px;
    padding: 12px 24px;
    background: #fef3c7;
    color: #92400e;
    border-radius: var(--radius-md);
    display: inline-block;
}

/* ===== Markdown 渲染样式 ===== */
.markdown-body {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
    user-select: text;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.25;
    color: #1a1a1a;
}

.markdown-body h1 {
    font-size: 2em;
    border-bottom: 1px solid #eaecef;
    padding-bottom: 0.3em;
}

.markdown-body h2 {
    font-size: 1.5em;
    border-bottom: 1px solid #eaecef;
    padding-bottom: 0.3em;
}

.markdown-body h3 {
    font-size: 1.25em;
}

.markdown-body p {
    margin-bottom: 16px;
}

.markdown-body code {
    background-color: #f6f8fa;
    padding: 3px 6px;
    border-radius: 4px;
    font-family: "JetBrains Mono", "SF Mono", "Monaco", "Menlo", "Consolas", "Courier New", monospace;
    font-size: 0.9em;
    user-select: text;
    -webkit-user-select: text;
    font-feature-settings: 'liga' 1, 'calt' 1;
}

.markdown-body pre {
    background-color: #f6f8fa;
    padding: 16px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 16px 0;
    position: relative;
    user-select: text;
    -webkit-user-select: text;
}

.markdown-body pre code {
    background-color: transparent;
    padding: 0;
    user-select: text;
    -webkit-user-select: text;
}

/* 代码块复制按钮 */
.code-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
}

.markdown-body pre:hover .code-copy-btn {
    opacity: 1;
}

.code-copy-btn:hover {
    background: var(--primary-hover);
}

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

/* Mermaid 图表样式 */
.mermaid-container {
    margin: 16px 0;
    padding: 16px;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    position: relative;
    overflow: auto;
    user-select: text;
    -webkit-user-select: text;
}

.mermaid-actions {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 10;
}

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

.mermaid-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
}

.mermaid-btn:hover {
    background: var(--primary-hover);
}

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

.markdown-body blockquote {
    border-left: 4px solid #dfe2e5;
    padding-left: 16px;
    color: #6a737d;
    margin: 16px 0;
    user-select: text;
    -webkit-user-select: text;
}

.markdown-body table {
    border-collapse: collapse;
    width: 100%;
    margin: 16px 0;
    user-select: text;
    -webkit-user-select: text;
}

.markdown-body table th,
.markdown-body table td {
    border: 1px solid #dfe2e5;
    padding: 8px 13px;
}

.markdown-body table th {
    background-color: var(--table-header-bg);
    color: var(--table-header-text);
    font-weight: 600;
}

.markdown-body ul,
.markdown-body ol {
    margin-left: 24px;
    margin-bottom: 16px;
}

.markdown-body li {
    margin-bottom: 4px;
}

/* 嵌套列表样式 - 确保子列表有正确的缩进 */
.markdown-body li > ul,
.markdown-body li > ol {
    margin-top: 4px;
    margin-left: 24px;
}

/* 确保列表项的内容与子列表对齐 */
.markdown-body li > p {
    margin-bottom: 4px;
}

.markdown-body a {
    color: var(--primary-color);
    text-decoration: none;
}

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

.markdown-body img {
    max-width: 100%;
    border-radius: var(--radius-md);
}

/* 数学公式样式 */
.math-block, .math-inline {
    overflow-x: auto;
    user-select: text;
    -webkit-user-select: text;
}

.math-block {
    margin: 16px 0;
    padding: 16px;
    text-align: center;
    position: relative;
    user-select: text;
    -webkit-user-select: text;
}

/* 数学公式复制按钮 */
.math-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
}

.math-block:hover .math-copy-btn {
    opacity: 1;
}

.math-copy-btn:hover {
    background: var(--primary-hover);
}

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

/* ===== 按钮样式 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    outline: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

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

.btn-success:hover:not(:disabled) {
    background: var(--success-hover);
    box-shadow: var(--shadow-md);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger-hover);
}

/* ===== 模态框 ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 400px;
    max-width: 90vw;
    animation: slideDown 0.3s;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.input-text {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
}

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

.auth-modal-content {
    width: 420px;
}

.auth-reason {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 18px;
}

.auth-field {
    margin-bottom: 16px;
}

.auth-field label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-color);
}

.auth-code-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: end;
}

.auth-password-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: end;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 13px;
    margin: 18px 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    height: 1px;
    flex: 1;
    background: var(--border-color);
}

.auth-status {
    display: none;
    font-size: 13px;
    margin-top: 4px;
}

.auth-status.show {
    display: block;
}

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

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

/* ===== 右键菜单 ===== */
.context-menu {
    display: none;
    position: fixed;
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    z-index: 1000;
    min-width: 160px;
}

.context-menu.show {
    display: block;
    animation: fadeIn 0.15s;
}

.context-menu-item {
    padding: 10px 14px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.2s;
}

.context-menu-item:hover {
    background: var(--hover-bg);
}

.context-menu-item.danger {
    color: var(--danger-color);
}

.context-menu-item.danger:hover {
    background: #fee2e2;
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

/* 文件夹列表样式（移动文件时） */
.folder-list {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-color);
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    position: relative;
}

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

.folder-item:hover {
    background: var(--hover-bg);
    transform: translateX(2px);
}

/* 根目录特殊样式 */
.folder-item.folder-level-0 {
    background: linear-gradient(90deg, #fef3c7 0%, transparent 100%);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

.folder-item.folder-level-0:hover {
    background: linear-gradient(90deg, #fde68a 0%, var(--hover-bg) 100%);
}

/* 一级文件夹 */
.folder-item.folder-level-1 {
    background: rgba(239, 246, 255, 0.3);
}

.folder-item.folder-level-1:hover {
    background: rgba(239, 246, 255, 0.6);
}

/* 二级及更深层级文件夹 */
.folder-item.folder-level-2 {
    background: rgba(239, 246, 255, 0.15);
}

.folder-item.folder-level-2:hover {
    background: rgba(239, 246, 255, 0.4);
}

/* 树形连接线 */
.folder-tree-line {
    position: absolute;
    left: 8px;
    top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--border-color) 0%, var(--border-color) 50%, transparent 50%);
}

.folder-tree-line::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 12px;
    height: 2px;
    background: var(--border-color);
}

.folder-item svg {
    flex-shrink: 0;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.folder-item .folder-name {
    flex: 1;
    font-size: 14px;
    color: var(--text-color);
    font-weight: 500;
}

/* 层级颜色区分 */
.folder-item.folder-level-0 .folder-name {
    color: #92400e;
}

.folder-item.folder-level-1 .folder-name {
    color: #1e40af;
}

.folder-item.folder-level-2 .folder-name,
.folder-item.folder-level-3 .folder-name {
    color: var(--text-color);
}

/* 源代码模态框特殊样式 */
.source-modal-content {
    height: 85vh;
    display: flex;
    flex-direction: column;
}

.source-modal-content .modal-body {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.source-modal-content #sourceContent,
.source-modal-content #sourceEditor {
    flex: 1;
}

.source-modal-footer {
    justify-content: center !important;
    padding: 20px 24px;
}

.source-actions-group {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* 编辑模式时隐藏关闭按钮 */
body.editing-source #sourceCloseBtn {
    display: none;
}

/* 上传选择按钮样式 */
.upload-options {
    display: flex;
    gap: 20px;
    padding: 30px;
    justify-content: center;
    align-items: center;
}

.upload-option-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 40px 50px;
    background: var(--hover-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-color);
}

.upload-option-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.upload-option-btn svg {
    opacity: 0.8;
}

.upload-option-btn:hover svg {
    opacity: 1;
}

/* ===== 设置弹窗 ===== */
.settings-section {
    margin-bottom: 24px;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 10px;
}

.settings-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 6px;
}

.theme-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.theme-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: all 0.2s;
}

.theme-option:hover {
    background: var(--hover-bg);
}

.theme-option.active {
    border-color: var(--primary-color);
    background: var(--hover-bg);
}

.theme-option span {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-color);
}

.theme-preview {
    width: 60px;
    height: 42px;
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    border: 1px solid rgba(0,0,0,0.1);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.theme-preview .tp-sidebar {
    width: 18px;
    flex-shrink: 0;
}

.theme-preview .tp-content {
    flex: 1;
    padding: 6px 5px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.theme-preview .tp-line {
    height: 3px;
    border-radius: 2px;
    width: 100%;
}

.theme-preview .tp-line.short {
    width: 60%;
}

.theme-preview-light {
    background: #ffffff;
}
.theme-preview-light .tp-sidebar { background: #f8fafc; border-right: 1px solid #e2e8f0; }
.theme-preview-light .tp-line { background: #cbd5e1; }

.theme-preview-dark {
    background: #1e293b;
}
.theme-preview-dark .tp-sidebar { background: #0f172a; border-right: 1px solid #334155; }
.theme-preview-dark .tp-line { background: #475569; }

.theme-preview-blue {
    background: #eff6ff;
}
.theme-preview-blue .tp-sidebar { background: #dbeafe; border-right: 1px solid #bfdbfe; }
.theme-preview-blue .tp-line { background: #93c5fd; }

.theme-preview-pink {
    background: #fdf2f8;
}
.theme-preview-pink .tp-sidebar { background: #fce7f3; border-right: 1px solid #fbcfe8; }
.theme-preview-pink .tp-line { background: #f9a8d4; }

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr 0;
    }
    
    .library-panel {
        display: none;
    }
    
    .sidebar-toggle-btn {
        display: none !important;
    }
    
    .preview-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 16px 20px;
    }
    
    .preview-actions {
        width: 100%;
    }
    
    .btn {
        flex: 1;
    }
    
    .upload-options {
        flex-direction: column;
    }
}