html, body {
    height: 100vh;
    margin: 0;
    padding: 0;
}

/* 自定义滚动条 */
.custom-scrollbar::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 设置面板动画 */
@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

.settings-panel {
    animation: slideIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.settings-panel.hiding {
    animation: slideOut 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.overlay-fade-in {
    animation: fadeIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.overlay-fade-out {
    animation: fadeOut 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 颜色选择器样式 */
.color-option {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.2s;
    border: 2px solid transparent;
}

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

.color-option.selected {
    border-color: #3b82f6;
    transform: scale(1.1);
}

/* 按钮选中样式 */
.style-button {
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.style-button.selected {
    background-color: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.style-button:hover {
    border-color: #3b82f6;
}

.highlight-text, #preview mark {
    background-color: rgba(255, 255, 0, 0.5);
    border-bottom: 2px solid rgba(255, 200, 0, 0.8);
    border-radius: 2px;
    padding: 0 2px;
    margin: 0 1px;
    transition: all 0.2s ease;
}

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 4px;
    padding: 4px 8px;
    position: absolute;
    z-index: 1;
    top: calc(100% + 5px);
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.2s;
}

/* 处理左侧边界问题 */
.tooltip:first-child .tooltiptext {
    left: 0;
    transform: none;
}

/* 添加小箭头 */
.tooltip .tooltiptext::before {
    content: "";
    position: absolute;
    bottom: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: transparent transparent #333 transparent;
}

/* 第一个 tooltip 的箭头位置调整 */
.tooltip:first-child .tooltiptext::before {
    left: 10px;
    margin-left: 0;
}

/* 工具栏右侧按钮样式 */
.toolbar-group:last-child button {
    width: auto;
    padding: 0 8px;
}

/* 工具栏右侧按钮组中倒数第二个按钮（复制按钮）的tooltip位置调整 */
.toolbar-group:last-child .tooltip:nth-last-child(2) .tooltiptext {
    right: -50%;
    left: auto;
    transform: none;
}

/* 倒数第二个按钮的tooltip箭头位置调整 */
.toolbar-group:last-child .tooltip:nth-last-child(2) .tooltiptext::before {
    right: 45%;
    left: auto;
    margin-left: 0;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 工具栏样式（合并后） */
.md-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 0.25rem;
    padding: 0.5rem;
    background-color: #f8f9fa;
    border-radius: 4px;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.md-toolbar button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    border: 1px solid #e2e8f0;
    background-color: white;
    color: #4a5568;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

.md-toolbar button:hover {
    background-color: #edf2f7;
    border-color: #cbd5e0;
}

.toolbar-group {
    display: flex;
    gap: 0.5rem;
}

.editor-container {
    display: flex;
    flex: 1;
    min-height: 0;
    position: relative;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
}

.line-numbers {
    width: 40px;
    padding: 8px 0;
    background-color: #f8f9fa;
    border-right: 1px solid #e2e8f0;
    font-family: monospace;
    font-size: 14px;
    line-height: 1.5;
    text-align: center;
    white-space: pre;
    color: #94a3b8;
    user-select: none;
    overflow-y: hidden;
}

#editor {
    flex: 1;
    padding: 8px;
    border: none;
    font-family: monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: none;
    overflow-y: auto;
}

#editor.drag-over {
    background-color: #e0f2fe;
}

.dark #editor.drag-over,
body.dark #editor.drag-over {
    background-color: #1e3a5f;
}

/* 最后一个tooltip（清空按钮）的位置调整 */
.tooltip:last-child .tooltiptext {
    right: 0;
    left: auto;
    transform: none;
}

/* 最后一个tooltip的箭头位置调整 */
.tooltip:last-child .tooltiptext::before {
    right: 10px;
    left: auto;
    margin-left: 0;
}

/* 预览区样式 */
#preview {
    padding: 1rem;
    line-height: 1.6;
    color: #24292e;
    overflow-y: auto;
}

/* PDF 打印样式 */
@media print {
    /* 打印时强制使用浅色主题 */
    body, body.dark, .dark {
        background-color: white !important;
    }

    /* 隐藏除预览区外的所有元素 */
    body * {
        visibility: hidden;
    }

    #preview, #preview * {
        visibility: visible;
    }

    #preview {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        padding: 20px;
        overflow: visible;
        border: none;
        background-color: white !important;
        color: #24292e !important;
    }

    /* 打印时表格使用浅色样式 */
    #preview th {
        background-color: #f6f8fa !important;
        color: #24292e !important;
    }

    #preview td {
        color: #24292e !important;
    }

    /* 打印时代码块使用浅色样式 */
    #preview pre {
        background-color: #f6f8fa !important;
    }

    #preview code {
        background-color: rgba(175, 184, 193, 0.2) !important;
        color: #24292e !important;
    }

    /* 分页控制 - 避免元素内部分页 */
    #preview p,
    #preview h1,
    #preview h2,
    #preview h3,
    #preview h4,
    #preview h5,
    #preview h6,
    #preview li,
    #preview img,
    #preview pre,
    #preview code,
    #preview blockquote,
    #preview figure,
    #preview tr {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    /* 标题后不分页，保持与下文连贯 */
    #preview h1,
    #preview h2,
    #preview h3,
    #preview h4,
    #preview h5,
    #preview h6 {
        break-after: avoid;
        page-break-after: avoid;
    }

    /* 段落孤行/寡行控制 */
    #preview p {
        orphans: 3;
        widows: 3;
    }

    /* 表格尽量不分页 */
    #preview table {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* 状态栏样式 */
.status-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 8px;
    font-size: 12px;
    color: #6b7280;
    background-color: #f9fafb;
    border-top: 1px solid #e5e7eb;
    border-radius: 0 0 4px 4px;
}

.status-divider {
    color: #d1d5db;
}

/* 深色模式 */
.dark {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border-color: #4b5563;
}

.dark body,
body.dark {
    background-color: var(--bg-secondary);
}

.dark nav,
body.dark nav {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
}

.dark nav .text-gray-800,
body.dark nav .text-gray-800 {
    color: var(--text-primary);
}

.dark nav a,
.dark nav button,
body.dark nav a,
body.dark nav button {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

.dark nav a:hover,
.dark nav button:hover,
body.dark nav a:hover,
body.dark nav button:hover {
    background-color: var(--border-color);
}

.dark .bg-white,
body.dark .bg-white {
    background-color: var(--bg-primary);
}

.dark .bg-gray-100,
body.dark .bg-gray-100 {
    background-color: var(--bg-secondary);
}

.dark #editor,
body.dark #editor {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.dark #editor::placeholder,
body.dark #editor::placeholder {
    color: var(--text-muted);
}

.dark .line-numbers,
body.dark .line-numbers {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-muted);
}

.dark .editor-container,
body.dark .editor-container {
    border-color: var(--border-color);
}

.dark #preview,
body.dark #preview {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.dark .md-toolbar,
body.dark .md-toolbar {
    background-color: var(--bg-tertiary);
}

.dark .md-toolbar button,
body.dark .md-toolbar button {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.dark .md-toolbar button:hover,
body.dark .md-toolbar button:hover {
    background-color: var(--bg-tertiary);
}

.dark .md-toolbar h2,
body.dark .md-toolbar h2 {
    color: var(--text-primary);
}

.dark .status-bar,
body.dark .status-bar {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-muted);
}

.dark .status-divider,
body.dark .status-divider {
    color: var(--border-color);
}

.dark .shadow-lg,
body.dark .shadow-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

.dark #settingsPanel,
body.dark #settingsPanel {
    background-color: var(--bg-primary);
}

.dark #settingsPanel h3,
.dark #settingsPanel label,
body.dark #settingsPanel h3,
body.dark #settingsPanel label {
    color: var(--text-primary);
}

.dark #settingsPanel input,
body.dark #settingsPanel input {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.dark #settingsPanel .style-button,
body.dark #settingsPanel .style-button {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.dark #settingsPanel .border-b,
.dark #settingsPanel .border-t,
body.dark #settingsPanel .border-b,
body.dark #settingsPanel .border-t {
    border-color: var(--border-color);
}

.dark #resetSettings,
body.dark #resetSettings {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

.dark .custom-scrollbar::-webkit-scrollbar-track,
body.dark .custom-scrollbar::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

.dark .custom-scrollbar::-webkit-scrollbar-thumb,
body.dark .custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--border-color);
}

/* 代码高亮样式 */
#preview pre {
    background-color: #f6f8fa;
    border-radius: 6px;
    padding: 16px;
    margin: 1em 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

#preview pre code {
    background: none;
    padding: 0;
    font-size: 14px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}

#preview code {
    background-color: rgba(175, 184, 193, 0.2);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 85%;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

.dark #preview pre,
body.dark #preview pre {
    background-color: #161b22;
}

.dark #preview code,
body.dark #preview code {
    background-color: rgba(110, 118, 129, 0.4);
}

/* 深色模式表格样式 */
.dark #preview table,
body.dark #preview table {
    border-color: var(--border-color);
}

.dark #preview th,
body.dark #preview th {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.dark #preview td,
body.dark #preview td {
    border-color: var(--border-color);
    color: var(--text-primary);
}

.dark #preview tr:nth-child(even),
body.dark #preview tr:nth-child(even) {
    background-color: var(--bg-tertiary);
}