/* ===========================================================================
   my_styles.css（最終整合版）
   Author: 凱凱
   Purpose: 自訂 TOC、暗色模式、手機浮動 TOC、美化樣式
   ========================================================================= */

/* === Logo Hover 動畫 === */
.navbar-brand img:hover,
.navbar-brand i:hover {
  transform: scale(1.1);
  transition: transform 0.2s ease;
}

/* === 桌機版 TOC 樣式 === */
.toc-body {
  background-color: #000;
  color: #fff;
  font-size: 0.81rem;
  /* ← 預設第一層字體大小 */
  line-height: 1;
  /* ← 調整項目行距 */
  padding: 1rem;
  border-radius: 8px;
  font-family: "Segoe UI", Roboto, sans-serif;
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
  overflow-x: auto;
  min-width: 220px;
  max-width: 240px;
  animation: fadeIn 0.6s ease-in-out;
}


.toc-body ul {
  list-style: none;
  margin: 0;
  padding-left: 0;
}

.toc-body ul ul {
  display: block;
  padding-left: 1rem;
}

/* 新增：第三層 ul 預設隱藏 */
.toc-body ul ul ul {
  display: none;
  padding-left: 1rem;
}

/* 根據 active 顯示展開 */
.toc-body li.active>ul {
  display: block;
}

/* 全部展開狀態（由 JS 控制） */
.toc-body.all-expanded ul ul ul {
  display: block !important;
}


/* === TOC 項目前的 icon 樣式（若不需要可註解） === */
.toc-body li>a::before {
  content: "\1F4CC";

  margin-right: 6px;
}

.toc-body li li>a::before {
  content: "\1F538";
  /* 🔸 圖示 */
}

.toc-body li li li>a::before {
  content: "\25AA";
  /* ▪ 圖示 */
}

/* === TOC 連結樣式（各層間距與字體大小） === */
.toc-body a {
  color: #fff;
  text-decoration: none;
  display: block;
  border-radius: 4px;
  border-left: 3px solid transparent;
  font-weight: 400;
  transition: all 0.25s ease;
  word-break: break-word;
  white-space: normal;
  opacity: 0;
  animation: fadeInItem 0.6s forwards;

  /* 共通內距與間距 */
  padding: 4px 8px;
  margin-bottom: 4px;
}

/* 第二層 TOC 項目 */
.toc-body li li>a {
  font-size: 0.8rem;
  /* ← 第二層較小 */
  padding-top: 3px;
  padding-bottom: 3px;
}

/* 第三層 TOC 項目 */
.toc-body li li li>a {
  font-size: 0.75rem;
  /* ← 第三層更小 */
  padding-top: 2px;
  padding-bottom: 2px;
}

.toc-body a:hover {
  background-color: #1a1a1a;
  border-left: 3px solid #fff;
  transform: translateX(4px);
  box-shadow: 0 2px 5px rgba(255, 255, 255, 0.1);
}

.toc-body a.active,
.toc-body li.active>a {
  background-color: #2a2a2a;
  color: #ffb86c;
  font-weight: bold;
  border-left: 3px solid #ffb86c88;
  box-shadow: 0 0 5px #ffb86c33;
}

/* === 手機浮動 TOC dropdown 修正樣式 === */
#toc-mobile-float .dropdown-menu {
  background-color: rgba(240, 240, 240, 0.2) !important;
  backdrop-filter: blur(2px);
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border-radius: 12px;
  padding: 0.25rem 0 !important;
  color: #222;
}

#toc-mobile-float .dropdown-menu a {
  padding: 8px 12px;
  color: #222;
  text-decoration: none;
  display: block;
  border-radius: 4px;
  border-left: 3px solid transparent;
  backdrop-filter: blur(1px);
  transition: all 0.3s ease;
}

#toc-mobile-float .dropdown-menu a:hover,
#toc-mobile-float .dropdown-menu a.active {
  background-color: rgba(180, 180, 180, 0.25);
  color: #b36b00;
  font-weight: bold;
  border-left: 3px solid #b36b00cc;
  box-shadow: 0 0 4px #b36b0033;
}

body.dark-mode #toc-mobile-float .dropdown-menu {
  background-color: rgba(0, 0, 0, 0.25) !important;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
  color: #eee;
}

body.dark-mode #toc-mobile-float .dropdown-menu a {
  color: #eee;
}

body.dark-mode #toc-mobile-float .dropdown-menu a:hover,
body.dark-mode #toc-mobile-float .dropdown-menu a.active {
  background-color: rgba(255, 255, 255, 0.15);
  color: #ffb86c;
  border-left: 3px solid #ffb86c88;
  box-shadow: 0 0 5px #ffb86c33;
}

/* ✅ 讓手機版 toc 不吃 .active 的高亮樣式 */
#toc-mobile-float .dropdown-menu a.active {
  background-color: inherit !important;
  color: inherit !important;
  font-weight: normal !important;
  border-left: 3px solid transparent !important;
  box-shadow: none !important;
}

/* === 主體明暗模式 === */
body {
  background-color: #fff;
  color: #222;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-mode {
  background-color: #121212;
  color: #eee;
}

body.dark-mode a {
  color: #ffb86c;
}

body.dark-mode a:hover {
  color: #ffa500;
}

body.dark-mode .navbar {
  background-color: #222 !important;
}

body.dark-mode .navbar .nav-link {
  color: #eee !important;
}

body.dark-mode .navbar .nav-link:hover {
  color: #ffb86c !important;
}

/* === 動態背景頁首樣式 === */
header.home-header {
  background: none;
  padding-top: calc(8rem + 57px);
  padding-bottom: 8rem;
  min-height: 70vh;
  position: relative;
  overflow: hidden;
}

header.home-header .site-heading {
  background-color: rgba(0, 0, 0, 0.2);
  text-align: center;
  border-radius: 0.5rem;
  backdrop-filter: blur(2px);
}

/* === 導覽列透明捲動樣式 === */
@media (min-width: 992px) {
  #mainNav:not(.is-scrolled):not(.navbar-scrolled) {
    background-color: transparent !important;
    backdrop-filter: none !important;
    box-shadow: none !important;
  }

  body.dark-mode #mainNav:not(.is-scrolled):not(.navbar-scrolled) {
    background-color: transparent !important;
    backdrop-filter: none !important;
    box-shadow: none !important;
  }

  body:not(.dark-mode) #mainNav.is-scrolled,
  body:not(.dark-mode) #mainNav.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(2px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  body.dark-mode #mainNav.is-scrolled,
  body.dark-mode #mainNav.navbar-scrolled {
    background-color: rgba(18, 18, 18, 0.75) !important;
    backdrop-filter: blur(2px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
  }
}

/* === 動畫 === */
@keyframes fadeIn {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInItem {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

#toc-mobile-float .dropdown-menu.toc-body.toc-mobile li.active>a,
#toc-mobile-float .dropdown-menu.toc-body.toc-mobile li.active>a.dropdown-item {
  background-color: transparent !important;
  color: inherit !important;
  font-weight: normal !important;
  border-left: 3px solid transparent !important;
  box-shadow: none !important;
}

/* === header的背景處理 === */
.masthead {
  min-height: 600px;
  padding-top: 6rem;
  padding-bottom: 6rem;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* 👉 平板（小於 992px） */
@media (max-width: 991.98px) {
  .masthead {
    min-height: 460px;
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
}

/* 👉 手機（小於 768px） */
@media (max-width: 767.98px) {
  .masthead {
    min-height: 380px;
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
}

/* 👉 超小手機（小於 576px） */
@media (max-width: 575.98px) {
  .masthead {
    min-height: 380px;
    padding-top: 2rem;
    padding-bottom: 2rem;
  }
}


/* === Markdown 樣式客製 === */
.markdown-body {
  background-color: transparent;
  color: inherit;
  font-family: "Segoe UI", Roboto, sans-serif;
  line-height: 1.8;
  font-size: 1rem;
}

/* 標題 */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  font-weight: bold;
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
}

/* 段落 */
.markdown-body p {
  margin-bottom: 1rem;
}

/* 清單 */
.markdown-body ul,
.markdown-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

/* 程式碼 */
.markdown-body code {
  background-color: rgba(200, 200, 200, 0.15);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-family: monospace;
}

/* 區塊程式碼 */
.markdown-body pre {
  background-color: rgba(200, 200, 200, 0.1);
  padding: 1rem;
  overflow-x: auto;
  border-radius: 8px;
  font-size: 0.95rem;
}

/* 表格 */
.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid #ccc;
  padding: 0.5rem 0.75rem;
  text-align: left;
}

/* 日夜間表格配色 */
body.dark-mode .markdown-body th,
body.dark-mode .markdown-body td {
  border-color: #555;
  background-color: rgba(255, 255, 255, 0.05);
  color: #eee;
}

body:not(.dark-mode) .markdown-body th,
body:not(.dark-mode) .markdown-body td {
  background-color: #f9f9f9;
  color: #222;
}

/* 引言 */
.markdown-body blockquote {
  margin: 1rem 0;
  padding-left: 1rem;
  border-left: 4px solid #888;
  color: #666;
  font-style: italic;
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem auto;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}