/* ========== 引入 project_css 變數與基底 ========== */
:root {
  --primary-color: #243d51;
  --highlight-color: #f8ef32;
  --main-font-color: #23396c;
  --secondary-font-color: #999999;
  --white-color: #ffffff;
  --primary-color-dark: #1a2d60;
  --main-font-color-rgb: 35, 57, 108;
  --secondary-blue-accent: #3a5a9a;
  --background-color-light: #fafafa;
  --general-border-color: #dddddd;
  --light-grey-bg: #f9f9f9;
  --modal-pre-bg: #f5f5f5;
  --error-red: #d32f2f;
  --warning-background: #f8d7da;
  --warning-text: #721c24;
  --disabled-button-bg: #6c757d;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 8px 20px rgba(var(--main-font-color-rgb), 0.3);
}

::selection {
  color: var(--highlight-color);
  background: var(--primary-color);
}

/* ========== 基礎排版 ========== */
html, body {
  margin: 0;
  height: 100%;
  font-family: "Noto Sans HK", Arial, sans-serif;
  background: var(--background-color-light);
  color: var(--main-font-color);
  line-height: 1.6;
}

/* ========== Header 部分 ========== */
header {
  background: var(--primary-color);
  color: var(--white-color);
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 10;
}
.header-inner {
  width: 100%;
  max-width: 1400px;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-brand img {
  height: 80px;
  width: 200px;
  object-fit: contain;
  transition: var(--transition);
}
.header-button {
  background: transparent;
  border: 2px solid var(--background-color-light);
  color: var(--background-color-light);
  border-radius: 6px;
  font-weight: 700;
  padding: 4px 12px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  height: 36px;
}
.header-button:hover {
  background: var(--background-color-light);
  color: var(--main-font-color);
}

/* ========== Drawer 選單 ========== */
.drawer {
  position: fixed;
  top: 0;
  right: -280px;
  width: 280px;
  height: 100%;
  background-color: var(--background-color-light);
  box-shadow: var(--shadow);
  z-index: 2000;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 20px;
}
.drawer.open { right: 0; }
.drawer-title {
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--general-border-color);
  margin-bottom: 12px;
}
.drawer-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--main-font-color);
  padding: 0;
  line-height: 1;
}
.drawer-item, .drawer-action-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  color: var(--main-font-color);
  text-decoration: none;
  font-weight: 500;
}
.drawer-item:hover, .drawer-action-link:hover {
  color: var(--primary-color);
}
.drawer hr {
  border: none;
  border-top: 1px solid var(--general-border-color);
  margin: 12px 0;
}
.drawer .copyright {
  text-align: left;
  padding-left: 0;
  font-size: 0.64rem;
  color: var(--secondary-font-color);
  border-top: 1px solid var(--general-border-color);
  padding-top: 8px;
  user-select: none;
}

/* ========== 標題樣式 ========== */
.page_title {
  font-size: 32px !important;
  font-weight: bold !important;
  display: block !important;
  margin: 20px 0 !important;
  color: #23396c !important;
}
.highlight-bg-font {
  color: #243d51 !important;
  position: relative !important;
  display: inline-block !important;
  line-height: 1.2 !important;
  z-index: 1 !important;
}
.highlight-bg-font::before {
  content: "" !important;
  position: absolute !important;
  bottom: 2px !important;
  left: 0 !important;
  width: 100% !important;
  height: 40% !important;
  background-color: #f8ef32 !important;
  z-index: -1 !important;
  border-radius: 2px !important;
}

/* ========== 桌面版 ========== */
@media (min-width: 769px) {
  .container {
    display: grid;
    grid-template-columns: 22% 73% 5%;
    height: calc(100vh - 74px);
    max-width: 1400px;
    margin: 0 auto;
    border-left: 1px solid var(--general-border-color);
    border-right: 1px solid var(--general-border-color);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
    transition: grid-template-columns 0.3s ease;
    background: #ffffff;
  }
  .document_section {
    background: var(--white-color);
    border-right: 1px solid var(--general-border-color);
    padding: 30px 20px;
    overflow-y: auto;
  }
  .document_block {
    width: 100%;
    max-width: 280px;
    background-color: var(--light-grey-bg);
    border-radius: 10px;
    padding: 12px;
    margin-bottom: 10px;
    border: 1px solid var(--general-border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
    cursor: default;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    font-weight: 600;
    font-size: 0.9rem;
  }
  .document_block:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.08);
  }
  .primary_content_section {
    background: var(--white-color);
    padding: 30px 40px;
    overflow-y: auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    font-size: 1rem;
    line-height: 1.7;
  }
  .ask_ai_section {
    background: var(--white-color);
    border-left: 1px solid var(--general-border-color);
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    transition: grid-template-columns 0.3s ease;
  }
  .ask_ai_header_desktop {
    display: flex !important;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.05rem;
    user-select: none;
    writing-mode: vertical-lr;
    transform: rotate(180deg);
    color: var(--primary-color);
    cursor: pointer;
  }
  .ask_ai_content_desktop {
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
    padding: 10px 20px;
    overflow-y: auto;
  }
  .ask_ai_content_desktop.active_desktop {
    display: flex;
  }
  .toggle-icon {
    font-size: 20px;
    color: var(--primary-color);
    transition: transform 0.3s ease;
  }
  .ask_ai_header_mobile,
  .ask_ai_content_mobile,
  .mobile-toggle-btn,
  .ai-container-mobile {
    display: none !important;
  }
  .ai-container-desktop {
    display: none;
    flex-direction: column;
    gap: 16px;
    width: 90%;
    max-width: 480px;
    margin: 0 auto 1.5rem;
  }
  .ask_ai_content_desktop.active_desktop .ai-container-desktop {
    display: flex;
  }
  .ai-container-desktop .btn-row {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 8px;
  }
  .tools_box_div {
    display: none;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
    padding: 15px;
    border: 1px solid var(--general-border-color);
    border-radius: 8px;
    background: var(--light-grey-bg);
  }
  .tool_btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    text-align: center;
    display: none;
  }
  .tool_btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
  }
  .tool_btn.show { display: block; }
  .tools_box_div.show { display: flex; }
}

/* ========== 手機版 - 最終穩定版（鍵盤直接覆蓋）========== */
@media (max-width: 768px) {
  .container {
    height: calc(100vh - 74px);
    max-width: 100%;
    display: flex;
    flex-direction: column;
    background: #ffffff;
    position: relative;
    padding-bottom: 0 !important;
  }
  .document_section {
    background: var(--white-color);
    border-bottom: 1px solid var(--general-border-color);
    padding: 15px 0 15px 15px;
    overflow-x: auto;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .scroll-container {
    display: flex;
    gap: 10px;
    padding-right: 15px;
  }
  .document_block {
    min-width: 150px;
    height: auto;
    padding: 12px;
    font-size: 0.9rem;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--general-border-color);
    white-space: normal;
    background-color: var(--light-grey-bg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
  }
  .document_block:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.08);
  }
  .primary_content_section {
    background: var(--white-color);
    padding: 20px 15px;
    font-size: 0.95rem;
    line-height: 1.7;
    overflow-y: auto;
    flex-grow: 1;
  }

  .ask_ai_section {
    background: #243d51;
    border-top: 1px solid var(--general-border-color);
    padding: 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3vh;
    min-height: 40px;
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 100;
  }

  .ask_ai_header_mobile {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: auto;
    font-weight: 700;
    font-size: 1.05rem;
    user-select: none;
    color: #ffffff;
    cursor: pointer;
    padding: 0;
    margin: 0;
  }
  .ask_ai_header_mobile .toggle-icon {
    color: #ffffff !important;
  }

  .ask_ai_header_desktop,
  .ask_ai_content_desktop,
  .ai-container-desktop {
    display: none !important;
  }

  /* 修改：調整 aiResponseModal 位置到頁面上部，避免被遮蔽 */
  .aiResponseModal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    justify-content: flex-start;
    align-items: center;
    z-index: 2002; /* 提高 z-index 確保在最上層 */
    padding-top: 20px;
  }
  
  .aiResponseModal-content {
    background: #fff;
    width: 90%;
    max-width: 600px;
    border-radius: 10px;
    padding: 20px;
    font-family: Arial, sans-serif;
    color: #23396c;
    position: relative;
    margin-top: 20px;
  }
  
  .ai-mobile-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: flex-end;
    z-index: 2000;
  }
  
  .ai-mobile-modal-overlay.show {
    display: flex;
  }
  
  .ai-mobile-modal-content {
    background: #ffffff;
    width: 100%;
    max-height: 70vh;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    padding: 20px 15px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
  }
  
  .ai-mobile-modal-overlay.show .ai-mobile-modal-content {
    transform: translateY(0);
  }
  
  .ai-mobile-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--general-border-color);
  }
  
  .ai-mobile-modal-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
  }
  
  .ai-mobile-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--secondary-font-color);
    cursor: pointer;
    padding: 5px;
  }
  
  /* 修改：統一移動版 modal 內容樣式，參考桌面版 */
  .ai-mobile-modal-content .ai-container-mobile {
    width: 95%;
    max-width: none;
    margin: 0 auto 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 16px; /* 與桌面版保持一致 */
  }
  
  .ai-mobile-modal-content .ai_input_container_mobile {
    position: relative;
    width: 100%;
    border: 1px solid var(--general-border-color);
    border-radius: 8px;
    background-color: var(--white-color);
    padding: 8px 12px; /* 調整內邊距 */
    box-sizing: border-box;
    height: auto; /* 改為自動高度 */
    min-height: auto; /* 移除最小高度 */
    display: flex;
    align-items: center; /* 改為置中對齊 */
    margin-bottom: 0; /* 移除額外間距 */
  }
  
  .ai-mobile-modal-content .search-input {
    width: 100%;
    border: none;
    outline: none;
    font-size: 1rem;
    padding: 0; /* 移除內邊距，由容器控制 */
    height: 25px; 
    background: transparent;
    box-sizing: border-box;
    resize: none;
    color: var(--main-font-color);
    min-height: 25px; 
    line-height: 25px; 
  }
  
  /* 修改：美化清除圖標樣式 */
  .ai-mobile-modal-content .clear-icon {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--secondary-font-color);
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 0.9rem;
    color: var(--white-color);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    opacity: 0.7;
  }
  
  .ai-mobile-modal-content .clear-icon:hover {
    background: var(--primary-color);
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
  }
  
  .ai-mobile-modal-content .search-input:valid ~ .clear-icon,
  .ai-mobile-modal-content .search-input:not(:placeholder-shown) ~ .clear-icon {
    display: flex;
  }
  
  .ai-mobile-modal-content .search-button {
    margin-top: 0; /* 移除額外間距 */
    height: 40px;
    padding: 6px 16px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 1px solid var(--general-border-color);
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: var(--transition);
    color: var(--main-font-color);
  }
  
  .ai-mobile-modal-content .search-button.active {
    background-color: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
  }
  
  .ai-mobile-modal-content .search-button:disabled {
    cursor: default !important;
    pointer-events: none;
    opacity: 0.6;
    background: transparent;
    color: var(--secondary-font-color);
    border-color: var(--general-border-color);
  }
  
  /* 工具框樣式與桌面版保持一致 */
  .ai-mobile-modal-content .tools_box_div {
    display: none;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
    padding: 15px;
    border: 1px solid var(--general-border-color);
    border-radius: 8px;
    background: var(--light-grey-bg);
  }
  
  .ai-mobile-modal-content .tool_btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    text-align: center;
    display: none;
  }
  
  .ai-mobile-modal-content .tool_btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
  }
  
  .ai-mobile-modal-content .tool_btn.show {
    display: block;
  }
  
  .ai-mobile-modal-content .tools_box_div.show {
    display: flex;
  }
}

/* ========== 共用樣式 ========== */
button.more_btn {
  margin-top: 8px;
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
button.more_btn:hover {
  background: var(--primary-color);
  color: var(--white-color);
  box-shadow: var(--hover-shadow);
}

.ai-container-share .toggle-icon {
  font-size: 20px;
  color: var(--primary-color);
  transition: transform 0.3s ease;
  margin-left: 0 !important;
  margin-right: auto !important;
  display: block;
}
.ai-container-share .char-count {
  font-size: 0.875rem;
  color: var(--secondary-font-color);
  text-align: right;
  margin-top: 6px;
}
.ai-container-share button.ai-send,
.ai-container-share button.search-button,
.ai-container-share button.ai-reset {
  padding: 6px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--general-border-color);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
  height: 40px;
  color: var(--main-font-color);
}
.ai-container-share button.ai-send:hover,
.ai-container-share button.search-button:hover {
  box-shadow: 0 4px 8px rgba(36, 61, 81, 0.15);
}
.ai-container-share button.ai-reset {
  color: #666;
  border-color: #ccc;
}
.ai-container-share button.ai-reset:hover {
  background-color: #f5f5f5;
}
.ai-container-share button.ai-send.active,
.ai-container-share button.search-button.active {
  background-color: var(--primary-color);
  color: var(--white-color);
  border-color: var(--primary-color);
}
.ai-container-share button.ai-send:disabled,
.ai-container-share button.search-button:disabled {
  cursor: default !important;
  pointer-events: none;
  opacity: 0.6;
  background: transparent;
  color: var(--secondary-font-color);
  border-color: var(--general-border-color);
}
.ai-container-share .ai-textarea {
  width: 100%;
  min-height: 110px;
  resize: vertical;
  padding: 12px;
  font-size: 1rem;
  border: 1px solid var(--general-border-color);
  border-radius: 8px;
  box-sizing: border-box;
  color: var(--main-font-color);
}
.ai-container-share .search-input {
  width: 100%;
  border: none;
  outline: none;
  font-size: 1rem;
  padding: 8px 32px 8px 8px;
  height: 100%;
  background: transparent;
  box-sizing: border-box;
  resize: none;
  color: var(--main-font-color);
}
.ai-container-share .clear-icon {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--secondary-font-color);
  cursor: pointer;
  display: none;
  height: 40px;
}
.ai-container-share .search-input:valid ~ .clear-icon,
.ai-container-share .search-input:not(:placeholder-shown) ~ .clear-icon {
  display: block;
}

/* ========== Markdown 內容樣式 ========== */
.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
  color: var(--primary-color);
  margin: 1.5em 0 0.5em 0;
  font-weight: 600;
}
.markdown-content h1 { font-size: 1.8rem; border-bottom: 2px solid var(--primary-color); padding-bottom: 0.3em; }
.markdown-content h2 { font-size: 1.5rem; border-bottom: 1px solid var(--general-border-color); padding-bottom: 0.3em; }
.markdown-content h3 { font-size: 1.3rem; }
.markdown-content p { margin: 1em 0; line-height: 1.7; }
.markdown-content ul,
.markdown-content ol { margin: 1em 0; padding-left: 2em; }
.markdown-content li { margin: 0.5em 0; }
.markdown-content blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 1em;
  margin: 1em 0;
  color: var(--secondary-font-color);
  font-style: italic;
}
.markdown-content code {
  background: var(--light-grey-bg);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}
.markdown-content pre {
  background: var(--modal-pre-bg);
  padding: 1em;
  border-radius: 5px;
  overflow-x: auto;
  margin: 1em 0;
}
.markdown-content pre code { background: none; padding: 0; }
.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  border: 1px solid var(--general-border-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}
.markdown-content th,
.markdown-content td {
  border: 1px solid var(--general-border-color);
  padding: 0.75em 1em;
  text-align: left;
  line-height: 1.4;
}
.markdown-content th {
  background: var(--light-grey-bg);
  font-weight: 600;
  color: var(--primary-color);
  border-bottom: 2px solid var(--general-border-color);
}
.markdown-content tr:nth-child(even) { background: var(--light-grey-bg); }
.markdown-content tr:hover { background: rgba(36, 61, 81, 0.05); }
.markdown-content a { color: var(--primary-color); text-decoration: none; }
.markdown-content a:hover { text-decoration: underline; }
.markdown-content strong { font-weight: 600; color: var(--primary-color-dark); }
.markdown-content em { font-style: italic; }

/* ========== 捲軸美化 ========== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--light-grey-bg); }
::-webkit-scrollbar-thumb { background: #ccc; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #bbb; }

.spinner-border {
  width: 1.2rem;
  height: 1.2rem;
  border-width: 2px;
  animation: spinner-border 0.75s linear infinite;
}
@keyframes spinner-border { to { transform: rotate(360deg); } }
.ms-2 { margin-left: 0.5rem; }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

/* ========== aiResponseModal 完整樣式 ========== */
.aiResponseModal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}
.aiResponseModal-content {
  background: #fff;
  width: 90%;
  max-width: 600px;
  border-radius: 10px;
  padding: 20px;
  font-family: Arial, sans-serif;
  color: #23396c;
  position: relative;
}
.aiResponseModal-title { 
  font-size: 20px; 
  font-weight: bold; 
  margin-bottom: 10px; 
}
.aiResponseModal-subtitle { 
  font-size: 20px; 
  margin-bottom: 15px; 
}
.aiResponseModal-divider { 
  border-top: 1px solid #dddddd; 
  margin: 15px 0; 
}
.aiResponseModal-body { 
  font-size: 18px; 
  line-height: 1.6; 
  color: #23396c; 
}
.aiResponseModal-body p { 
  margin: 10px 0; 
}
.aiResponseModal-body a { 
  color: #23396c; 
  text-decoration: none; 
}
.aiResponseModal-body a:hover { 
  text-decoration: underline; 
}
.aiResponseModal-footer { 
  text-align: right; 
  margin-top: 20px; 
}
.aiResponseModal-close-btn {
  background: #243d51;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
  width: 100%;
  text-align: center;
}
.aiResponseModal-close-btn:hover { 
  background: #1b2f41; 
}
.aiResponseModal-overlay.show { 
  display: flex; 
}
.hidden { 
  display: none; 
}