/* ========== Latin Font Fallback (防止英文字型攔截中文字型) ========== */
@font-face {
    font-family: "Latin Fallback";
    src: local("Segoe UI"), local("Roboto"), local("Helvetica Neue"), local("Arial"), local("sans-serif");
    /* 涵蓋基本英數字、半形標點，以及彎引號 (Smart Quotes) */
    unicode-range: U+0020-007F, U+2018-201D;
}

/* ========== 整體頁面設定 ========== */
body {
    /* Default fallback */
    font-family: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 1em;
    line-height: 1.6;
    /* 設定全域行高 (標準版) 。在生成 EPUB 時，腳本會針對 Google Play 版將此屬性替換為 1.4 */
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Traditional Chinese (繁體中文) */
body:lang(zh-TW),
body:lang(zh-Hant) {
    font-family: "Latin Fallback", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
}

/* Japanese */
body:lang(ja),
body:lang(ja-JP) {
    font-family: "Latin Fallback", "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
}

/* Simplified Chinese (簡體中文) */
body:lang(zh-CN),
body:lang(zh-Hans) {
    font-family: "Latin Fallback", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
}

/* English */
body:lang(en),
body:lang(en-US) {
    font-family: Roboto, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}



/* ========== EPUB Table of Contents 設定 ========== */
/* 隱藏 TOC 中的自動編號 */
ol.toc {
    list-style-type: none;
    padding-left: 0;
}

ol.toc ol {
    padding-left: 1.5em;
}

/* ========== 段落樣式 ========== */
p {
    margin-top: 0.8em;
    margin-bottom: 1em;
    text-align: justify;
    /* 中文段落兩端對齊 */
    /*text-indent: 2em;     /* 中文首行縮排 */
}

/* ========== 標題樣式 ========== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: "Latin Fallback", "Noto Sans TC", "Source Han Sans TC", "Microsoft JhengHei", sans-serif;
    font-weight: bold;
    line-height: 1.4;
    margin-top: 2em;
    margin-bottom: 0.8em;
    text-align: start;
    text-indent: 0;
    /* 標題不縮排 */
}

/* English Headings */
body:lang(en) h1,
body:lang(en) h2,
body:lang(en) h3,
body:lang(en) h4,
body:lang(en) h5,
body:lang(en) h6,
body:lang(en-US) h1,
body:lang(en-US) h2,
body:lang(en-US) h3,
body:lang(en-US) h4,
body:lang(en-US) h5,
body:lang(en-US) h6 {
    font-family: Roboto, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

/* Japanese Headings */
body:lang(ja) h1,
body:lang(ja) h2,
body:lang(ja) h3,
body:lang(ja) h4,
body:lang(ja) h5,
body:lang(ja) h6,
body:lang(ja-JP) h1,
body:lang(ja-JP) h2,
body:lang(ja-JP) h3,
body:lang(ja-JP) h4,
body:lang(ja-JP) h5,
body:lang(ja-JP) h6 {
    font-family: "Latin Fallback", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
}

h1 {
    font-size: 1.8em;
}

h2 {
    font-size: 1.5em;
}

h3 {
    font-size: 1.25em;
}

/* ========== 清單樣式 ========== */
li {
    margin-bottom: 0.6em;
    line-height: 1.5;
    text-align: justify;
}

ul,
ol {
    padding-left: 2.5em;
    margin-top: 0.5em;
    margin-bottom: 1.8em;
}

/* ========== 引用區塊 ========== */
blockquote,
.blockquote {
    margin-top: 2.5em;
    margin-bottom: 2.5em;
    margin-left: 2em;
    padding-top: 0.5em;
    padding-bottom: 0.5em;
    padding-left: 1rem;
    padding-right: 1.5rem;
    border-left: none;
    border-top: 1px solid rgba(128, 128, 128, 0.5);
    /* 同時適用 light/dark mode 的顏色 */
    border-bottom: 1px solid rgba(128, 128, 128, 0.5);
    text-align: justify;
    /* 預設繼承 body 的字型設定 */
    font-size: 0.95em;
}

/* English Blockquotes */
body:lang(en) blockquote,
body:lang(en-US) blockquote,
body:lang(en) .blockquote,
body:lang(en-US) .blockquote {
    font-family: Roboto, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

/* 中文版引言區塊使用中文字型 */
body:lang(zh-TW) blockquote,
body:lang(zh-Hant) blockquote,
body:lang(zh-TW) .blockquote,
body:lang(zh-Hant) .blockquote {
    font-family: "Latin Fallback", "Noto Sans TC", "Source Han Sans TC", "Microsoft JhengHei";
}

body:lang(zh-CN) blockquote,
body:lang(zh-Hans) blockquote,
body:lang(zh-CN) .blockquote,
body:lang(zh-Hans) .blockquote {
    font-family: "Latin Fallback", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei";
}

body:lang(ja) blockquote,
body:lang(ja-JP) blockquote,
body:lang(ja) .blockquote,
body:lang(ja-JP) .blockquote {
    font-family: "Latin Fallback", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo";
}

/* ========== Callout 區塊 (警告、提示等) ========== */
.callout {
    margin-top: 1.5em;
    margin-bottom: 1.5em;
    margin-left: 0.7em;
    margin-right: 0.7em;
    text-align: justify;
}

/* 中文版 Callout 區塊使用中文字型 */
body:lang(zh-TW) .callout,
body:lang(zh-Hant) .callout {
    font-family: "Latin Fallback", "Noto Sans TC", "Source Han Sans TC", "Microsoft JhengHei";
}

body:lang(zh-CN) .callout,
body:lang(zh-Hans) .callout {
    font-family: "Latin Fallback", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei";
}

body:lang(ja) .callout,
body:lang(ja-JP) .callout {
    font-family: "Latin Fallback", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo";
}

/* ========== 程式碼區塊 ========== */
code {
    font-family: "Source Code Pro", "Noto Sans Mono CJK TC", monospace;
    font-size: 0.95em;
    background-color: #f4f4f4;
    padding: 0.1em 0.3em;
    border-radius: 3px;
    text-align: start;
}

pre {
    background-color: #f4f4f4;
    margin-top: 2em;
    margin-bottom: 2em;
    padding: 1em;
    overflow-x: auto;
    border-radius: 5px;
    line-height: 1.4;
    text-align: start;
}

/* 覆寫 Pandoc/Quarto 內嵌樣式，避免長行程式碼在 EPUB 中溢出頁面 */
pre>code.sourceCode {
    white-space: pre-wrap !important;
}

/* 修正：code 預設有 padding，導致在 pre 內第一行會縮進。
   這裡強制移除 pre 內部的 code padding 與背景色 (由 pre 統一處理) */
pre code {
    font-size: 0.95em;
    padding: 0;
    background-color: transparent;
    border-radius: 0;
    white-space: pre-wrap;
}

/* ========== 表格樣式 ========== */
table,
.table {
    width: 95%;
    font-size: 0.9em;
    margin-top: 2em;
    margin-bottom: 3em;
    margin-left: auto;
    margin-right: auto;
    border-collapse: collapse;
    border-spacing: 0;
    border-top: 2px solid #666;
    border-bottom: 2px solid #666;
}

table.table {
    margin-top: 2em;
    margin-bottom: 3em;
}

th,
td {
    padding: 0.8em 0.5em;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid #ddd;
}

/* 提高權重以覆蓋 Quarto/Bootstrap 的預設樣式 (.table>:not(caption)>*>* { background-color: unset; }) */
.table thead th,
table thead th {
    border-bottom: 2px solid #666;
    font-weight: bold;
    background-color: #f9f9f9;
}

/* 移除預設的所有邊框，改用我們自定義的 */
table th,
table td {
    border-left: none;
    border-right: none;
}

/* 條紋樣式 (Striped) - 針對有 .striped 類別的表格 */
.striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.03);
}

/* ========== 圖片說明 ========== */
figure {
    margin: 1.5em 0;
    text-align: center;
}

figcaption {
    font-size: 0.9em;
    font-weight: bold;
    color: #666;
    margin-top: 0.5em;
    margin-bottom: 3em;
}

img {
    height: auto;
    margin-top: 2em;
    /* 增加圖片與上方段落的距離 */
    margin-bottom: 2em;
    /* 增加圖片與下方內容的距離 */
}

/* ========== 版權頁 ========== */
.copyright-page {
    margin-top: 3em;
    margin-bottom: 1em;
}

.copyright-page p {
    line-height: 1.4;
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    font-size: 1em;
}

.copyright-page hr {
    margin-top: 1em;
    margin-bottom: 1em;
}