:root {
    --brand: #5b8def;
    --ink-2: #334155;
    --warn: #ea580c;
    --warn-500: #f59e0b;
    --rt-scale: 0.68;
}

body {
    background: radial-gradient(1200px 600px at 15% 0%, #e7f0ff 0%, #f0f7ff 30%, #f7fbff 55%, #f8fbff 100%);
    min-height: 100vh;
}

.elevated {
    box-shadow: 0 10px 30px rgba(16, 24, 40, 0.08), 0 2px 8px rgba(16, 24, 40, 0.06);
}

/* 置中對齊，縮短拼音與漢字距離 */

ruby {
    ruby-position: over;
    text-align: center;
    /* 使用 flexbox 進行排版，垂直對齊更穩定 */
    display: inline-flex;
    flex-direction: column-reverse; /* 讓 rb 在 rt 下方 */
    vertical-align: middle; /* 確保與旁邊的文字對齊 */
    margin: 0 0.05em;
}

rb {
    display: inline;
    line-height: 1.1;
    text-align: center;
}

rt {
    font-size: calc(var(--rt-scale) * 1em);
    color: var(--ink-2);
    line-height: 1;
    white-space: nowrap;
    text-align: center;
    display: block;
    margin-bottom: -0.5em;
}

rt:empty::before {
    content: '\00a0'; 
    visibility: hidden; 
}


.glyph {
    display: inline-block;
	vertical-align: middle;
    padding: 0.18rem 0.16rem;
    margin: 0.06rem 0.03rem;
    border-radius: 0.5rem;
    transition: background-color 120ms ease, color 120ms ease, box-shadow 120ms ease, outline-color 120ms ease;
}
.glyph-word {
    padding: 0.18rem 0.12rem;
}

.glyph.punct {
    padding: 0.18rem 0.08rem;
    color: var(--ink-2);
}

.glyph.missing {
    background: #fff2f2;
    outline: 1px dashed #fecaca;
}

.glyph.extra {
    background: #fff7ed;
    outline: 1px dashed #fed7aa;
}

.clause {
    display: inline-block;
    padding: 0.06rem 0.12rem;
    border-radius: 0.45rem;
    position: relative;
    margin-right: 0.08rem;
    scroll-margin: 96px;
}

.clause-warn {
    background: #fff7ed;
    outline: 2px solid #f59e0b;
    box-shadow: 0 0 0 2px #fde68a inset;
}

/* 未選取的錯誤：淡化邊框 */
.clause-warn.dimmed {
    background: #fffaf2;
    outline-color: #fbbf24;
    box-shadow: 0 0 0 2px #fde68a1a inset;
    opacity: 0.7;
}

/* 片段編輯按鈕（僅編輯模式顯示） */
.edit-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 26px;
    height: 26px;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(16, 24, 40, .12);
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity .15s ease, transform .15s ease;
    cursor: pointer;
    z-index: 2;
}

.clause:hover .edit-btn {
    opacity: 1;
    transform: translateY(0);
}

.edit-btn:hover {
    background: #f8fafc;
}

/* 片段內嵌編輯器（僅編輯模式使用） */
.inline-editor {
    margin-top: 8px;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 10px 30px rgba(16, 24, 40, 0.12), 0 2px 8px rgba(16, 24, 40, 0.08);
}

.inline-editor input {
    width: 100%;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 8px;
    outline: none;
}

.inline-editor .actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.inline-editor .btn {
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
}

.inline-editor .btn.save {
    background: #2563eb;
    color: white;
}

.inline-editor .btn.cancel {
    background: #f1f5f9;
    color: #334155;
}

.scroll-area {
    min-height: 430px;
    max-height: 60vh;
    overflow: auto;
    scroll-behavior: smooth;
    background: white;
    border-radius: 0.75rem;
    flex: 1 1 auto;
}

.line-wrap {
    display: block;
    margin: 0.35rem 0;
    line-height: 2.1;
    word-break: keep-all;
    white-space: normal;
}

/* 問題跳轉時的短暫強調 */
.focus-ring {
    box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.6);
    transition: box-shadow .25s ease;
}

/* 檢視/編輯切換 */
.seg {
    border-radius: 999px;
    padding: 2px;
    display: inline-flex;
    gap: 4px;
}

.seg button {
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    color: #475569;
}

.seg button.active {
    background: #fff;
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(16, 24, 40, 0.1);
}

/* 檢視模式：移除 hover/底色/邊框/陰影，避免貼到 Word 出現邊框 */
.mode-view .glyph,
.mode-view .clause,
.mode-view ruby,
.mode-view .glyph.missing,
.mode-view .glyph.extra {
    background: transparent !important;
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
}

.mode-view .glyph:hover {
    background: transparent !important;
}

/* 檢視模式下，強制讓警告區塊與一般區塊無異 */
.mode-view .clause-warn {
    background: transparent !important;
    outline: none !important;
    box-shadow: none !important;
    color: inherit !important; 
    opacity: 1 !important;
}

/* 字級調整面板與「往上展開」狀態 */
.popover {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    z-index: 50;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(16, 24, 40, 0.12), 0 2px 8px rgba(16, 24, 40, 0.08);
    width: 240px;
    padding: 10px;
}

.popover.drop-up {
    top: auto;
    bottom: 100%;
    margin-top: 0;
    margin-bottom: 8px;
}

.number-row {
    display: grid;
    grid-template-columns: 1fr auto auto auto;
    gap: 8px;
    align-items: center;
}

.btn-ghost {
    background: #f3f4f6;
    border-radius: 10px;
    padding: 6px 10px;
}

.btn-ghost:hover {
    background: #e5e7eb;
}


/* --- 單詞編輯器樣式 --- */
.word-editor {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 12px;
    box-shadow: 0 10px 30px rgba(16, 24, 40, 0.12), 0 2px 8px rgba(16, 24, 40, 0.08);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.word-editor input {
    width: 120px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 8px 10px;
    outline: none;
    font-size: 14px;
}

.word-editor .actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.word-editor .btn {
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
    border: none;
    cursor: pointer;
}

.word-editor .btn.save {
    background: #2563eb;
    color: white;
}

.word-editor .btn.cancel {
    background: #f1f5f9;
    color: #334155;
}

/* 編輯模式下，滑鼠移到可編輯單詞上時的樣式 */
.mode-edit .glyph:not(.punct):hover {
    background: #eef2ff;
}

/* --- START: 編輯器內的拼音輸入行樣式 --- */
.pinyin-editor-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

.pinyin-editor-row input {
    flex-grow: 1;
    min-width: 0;
}

.pinyin-editor-row .btn-tone-toggle {
    flex-shrink: 0;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 6px 8px;
    font-size: 12px;
    background: #f8fafc;
    color: #475569;
    cursor: pointer;
}
.pinyin-editor-row .btn-tone-toggle:hover {
    background: #f1f5f9;
    border-color: #d1d5db;
}

.tone-converter-menu-editor {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 4px;
    width: 120px;
    padding: 4px;
    z-index: 20;
}

.tone-converter-menu-editor button {
    width: 100%;
    text-align: left;
    font-size: 12px;
    padding: 6px 8px;
    border-radius: 6px;
}
.tone-converter-menu-editor button:hover {
    background: #f1f5f9;
}

/* 單詞編輯器中，按鈕文字較短，微調樣式 */
.word-editor .pinyin-editor-row input {
    width: 80px;
    flex-grow: 0;
}
.word-editor .pinyin-editor-row .btn-tone-toggle {
    padding: 6px;
}

/* 修正：針對轉調號選單，使其寬度自適應，避免過寬 */
.tone-converter-menu {
    width: auto;      /* 讓寬度由內容決定 */
    min-width: 80px; /* 設定一個最小寬度以維持版面整齊 */
    padding: 6px;     /* 統一內邊距 */
}
/* --- END: 編輯器樣式 --- */

/* --- START: 聲調說明視窗表格樣式 --- */
#toneHelpModal table,
#toneHelpModal th,
#toneHelpModal td {
    border: 1px solid #e5e7eb;
}
#toneHelpModal code {
    background-color: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    color: #475569;
}
/* --- END: 聲調說明視窗樣式 --- */


.inline-editor .actions,
.word-editor .actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.actions .relative.mr-auto {
    margin-right: auto;
}

.btn-tone-toggle-editor {
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
    border: none;
    cursor: pointer;
    background: #f1f5f9;
    color: #334155;
}
.btn-tone-toggle-editor:hover {
    background: #e2e8f0;
}

/* 確保編輯器內的選單能向上彈出 */
.tone-converter-menu-editor.drop-up {
    top: auto;
    bottom: 100%;
    margin-top: 0;
    margin-bottom: 8px;
    padding: 4px;
    width: 120px;
    z-index: 20;
}

.tone-converter-menu-editor button {
    width: 100%;
    text-align: left;
    font-size: 12px;
    padding: 6px 8px;
    border-radius: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.tone-converter-menu-editor button:hover {
    background: #f1f5f9;
}



#mainGrid, #inputSection, #resultSection {
    /* 主要的過渡動畫效果 */
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.collapsible-content {
    transition: opacity 0.3s ease, max-height 0.5s ease, transform 0.4s ease, margin 0.5s ease;
    transform-origin: top;
}

/* 當 section.is-collapsed 時，其內部的內容區塊樣式 */
section.is-collapsed .collapsible-content {
    max-height: 0;
    opacity: 0;
    margin: 0 !important;
    padding: 0 !important;
}

/* 當 section.is-collapsed 時，其內部的標題文字 */
section.is-collapsed .title-text {
    display: none;
}

/* 在大螢幕 (lg) 且收合時，讓圖示旁邊的操作按鈕也消失 */
@media (min-width: 1024px) {
    section.is-collapsed .flex.items-center.gap-3 {
        display: none;
    }
}
/* --- END: 可收合面板樣式 --- */
/* --- START: 點播功能樣式 (新增) --- */
#btnPlayAudio.active {
    background: #cffafe; /* light-cyan-200 */
    color: #0891b2; /* cyan-600 */
}

/* 啟用點播模式時，滑鼠移到可點擊的字詞上時的樣式 */
.mode-audio ruby.glyph {
    cursor: pointer;
    border-radius: 0.5rem; /* 確保圓角效果 */
    transition: background-color 120ms ease;
}

.mode-audio ruby.glyph:hover {
    background-color: #f0f9ff !important; /* light-blue-50, 使用 !important 覆蓋檢視模式的樣式 */
}
/* --- END: 點播功能樣式 --- */

/* --- START: 轉調號選單高亮樣式--- */
.tone-converter-menu .btn-set-tone-default.active {
    background-color: #eef2ff; /* 淺藍色背景 */
    color: #4338ca; /* 深藍色文字 */
    font-weight: 600; /* 文字加粗 */
}
/* --- END: 轉調號選單高亮樣式 --- */
.phonetic-choice.active {
    background-color: #eef2ff; /* 淺藍色背景 */
    color: #4338ca; /* 深藍色文字 */
    font-weight: 600; /* 文字加粗 */
}

/* --- START: 字體選擇樣式 (新增) --- */
.font-choice.active {
    background-color: #eef2ff; /* 淺藍色背景 */
    color: #4338ca; /* 深藍色文字 */
    font-weight: 600; /* 文字加粗 */
}

/* 當 resultArea 套用 .font-kai 時，改變其內部字體 */
#resultArea.font-kai,
#resultArea.font-kai ruby,
#resultArea.font-kai rb,
#resultArea.font-kai rt {
    font-family: "台灣楷體", twkai;
}
/* --- END: 字體選擇樣式 --- */


/* --- START: 語言選擇樣式 --- */
.lang-choice.active {
    background-color: #eef2ff; /* 淺藍色背景 */
    color: #4338ca; /* 深藍色文字 */
    font-weight: 600; /* 文字加粗 */
}
/* --- END: 語言選擇樣式 --- */




/* 詞彙模式下的 ruby 標籤 */
.word-unit .glyph-word {
    padding: 0.1rem 0.12rem;
}

/* 編輯模式下，滑鼠移到可編輯詞彙上時的樣式 */
.mode-edit .word-unit:hover {
    background: #eef2ff;
}
/* --- END: 詞彙標註樣式 --- */


@media (max-width: 768px) {
  */
  .clause {
    padding-right: 32px; /* 增加右側內邊距 */
  }

  .edit-btn {
    top: -4px;
    right: -4px;
    
    /* 在編輯模式下，讓按鈕永遠可見，而不是 hover 才顯示 */
    opacity: 1; 
    transform: translateY(0);
    
    /* 確保按鈕在捲動時不會有不自然的晃動 */
    transition: none;
  }

  .clause:hover .edit-btn {
    opacity: 1;
    transform: translateY(0);
  }
}