/* ==========================================================================
   🎨 现代华文学习平台全局样式 - style.css (2026 极致美化国风增强版)
   ========================================================================== */

:root {
    --bg-color: linear-gradient(135deg, #f4f7f6 0%, #eaefed 100%); /* 护眼莫兰迪柔和微渐变 */
    --text-color: #2c3e50;
    --card-bg: #ffffff;
    --primary-color: #34495e;
    --accent-color: #2ecc71;
    --ai-color: #9b59b6;
    --ruby-color: #e67e22;
    --input-border: #cbd5e1;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 10px 25px rgba(44, 62, 80, 0.05);
}

/* 🌙 暗黑模式适配 */
[data-theme="dark"] {
    --bg-color: linear-gradient(135deg, #141414 0%, #202020 100%);
    --text-color: #e0e0e0;
    --card-bg: #222222;
    --primary-color: #bdc3c7;
    --input-border: #475569;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
    --shadow-md: 0 10px 25px rgba(0,0,0,0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-color);
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.8;
    margin: 0;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: background 0.3s, color 0.3s;
}

/* 🎛️ 控制面板样式 */
.control-panel {
    display: flex;
    gap: 12px;
    margin-bottom: 25px;
    width: 100%;
    max-width: 800px;
}

.control-panel button {
    padding: 10px 20px;
    border: 1px solid rgba(0,0,0,0.05);
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 24px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.control-panel button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(44, 62, 80, 0.08);
}

/* 📝 生词本区域 */
.vocab-notebook {
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    margin-bottom: 25px;
    box-sizing: border-box;
    border: 1px solid rgba(0,0,0,0.02);
}

.notebook-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.clear-btn {
    background: #e74c3c;
    color: white;
    border: none;
    padding: 5px 14px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 12px;
    font-weight: bold;
    transition: opacity 0.2s;
}

.clear-btn:hover { opacity: 0.9; }

.notebook-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.notebook-item {
    background: rgba(52, 152, 219, 0.08);
    color: #2980b9;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

[data-theme="dark"] .notebook-item {
    background: rgba(52, 152, 219, 0.2);
    color: #3498db;
}

.notebook-item:hover {
    background: #3498db;
    color: white;
    transform: scale(1.05);
}

/* 🧩 生词测试游戏区域 */
.game-container {
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    padding: 25px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(142, 68, 173, 0.05);
    margin-bottom: 25px;
    box-sizing: border-box;
    border: 1px solid rgba(0, 0, 0, 0.02);
}

.quiz-card {
    text-align: center;
    padding: 10px 0;
}

.quiz-pinyin {
    font-size: 16px;
    color: #7f8c8d;
    margin-bottom: 25px;
}

.quiz-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.quiz-opt-btn {
    padding: 14px 20px;
    background: var(--bg-color);
    border: 1px solid var(--input-border);
    color: var(--text-color);
    border-radius: 10px;
    font-size: 15px;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

/* 🛠️ 终极清洗：生词测试选项 Mouse over 时，换成完美的清爽浅蓝色调 */
.quiz-opt-btn:hover {
    background: #f0f7fc !important;      
    border-color: #3498db !important;    
    color: #2980b9 !important;           
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.1) !important; 
    transform: translateY(-1px);
}

.quiz-opt-btn.correct {
    background: #2ecc71 !important;
    color: white !important;
    border-color: #2ecc71;
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

.quiz-opt-btn.wrong {
    background: #e74c3c !important;
    color: white !important;
    border-color: #e74c3c;
    cursor: not-allowed;
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

/* ==========================================================================
   ⚙️ 针对生词测试大字标题（ID: quizQuestion）的专属跨模式控色补丁
   ========================================================================== */
/* ☀️ 日间模式下大生词换成高档的国风深墨黑 */
#quizQuestion {
    font-size: 36px;
    font-weight: bold;
    color: #2c3e50 !important;
    letter-spacing: 2px;
    transition: color 0.3s ease;
}

/* 🌙 暗黑模式适配：大生词自动转为清晰的纯白色 */
[data-theme="dark"] #quizQuestion {
    color: #ffffff !important;
}


/* 📖 课文文章卡片 */
.article-card {
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    padding: 50px 60px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    box-sizing: border-box;
    border: 1px solid rgba(0,0,0,0.01);
}

h1 {
    text-align: center;
    font-size: 32px;
    font-weight: 800;
    margin-top: 0;
    margin-bottom: 40px;
    color: var(--text-color);
    letter-spacing: 2px;
}

#content p {
    text-align: justify;
    text-justify: inter-ideograph;
    margin-bottom: 35px;
    font-size: 19px;
    letter-spacing: 1.5px;
    color: var(--text-color);
}

/* 🎯 段落编号：悬浮小书签样式 */
.p-index {
    display: inline-block;
    font-size: 12px;
    background: #eef3f0;
    color: #2c3e50;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 600;
    user-select: none;
    border: 1px solid #d2ded7;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

[data-theme="dark"] .p-index {
    background: #2d3748;
    color: #a0aec0;
    border-color: #4a5568;
}

/* 🍊 拼音标注（Ruby）极致互动 */
ruby {
    ruby-position: over;
    cursor: pointer;
    padding: 0 2px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

ruby:hover, ruby.is-active {
    background: #fff3cd; /* 悬停时字底变浅黄 */
    color: #d35400;      /* 字变暖橙色 */
}

[data-theme="dark"] ruby:hover, [data-theme="dark"] ruby.is-active {
    background: #4a3716;
    color: #f39c12;
}

/* 🙈 全篇所有拼音默认隐藏 */
#content rt {
    opacity: 0;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    font-size: 12px;
    color: var(--ruby-color);
    font-family: "PingFang SC", "Lucida Grande", sans-serif;
    padding-bottom: 5px;
}

/* 🌟 当鼠标指到（hover）或手机点击激活（.is-active）时拼音浮现 */
#content ruby:hover rt, 
#content ruby.is-active rt {
    opacity: 1;
}

/* 💬 字典词摘气泡弹窗（Popover） */
.buddy-popover {
    display: none;
    position: fixed;
    z-index: 9999;
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 14px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
    padding: 18px;
    width: 270px;
    box-sizing: border-box;
    border: 1px solid var(--input-border);
}

.pop-title-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--input-border);
    padding-bottom: 8px;
}

.pop-title {
    font-size: 22px;
    font-weight: bold;
}

.pop-pinyin {
    font-size: 14px;
    color: #e67e22;
    font-weight: 600;
}

.pop-box {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    font-size: 14px;
    margin-bottom: 10px;
    line-height: 1.5;
}

.pop-tag {
    font-size: 11px;
    font-weight: bold;
    color: white;
    padding: 2px 5px;
    border-radius: 4px;
    flex-shrink: 0;
    margin-top: 1px;
}

.pop-en { color: #2980b9; }
.pop-en .pop-tag { background: #3498db; }

.pop-bm { color: #c0392b; }
.pop-bm .pop-tag { background: #e74c3c; }

.pop-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid var(--input-border);
}

.pop-btn-copy {
    background: #2ecc71;
    color: white;
    border: none;
    padding: 6px 16px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.2s;
}

.pop-btn-copy:hover { background: #27ae60; }

.pop-arrow {
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid var(--card-bg);
    transform: translateX(-50%);
}

/* ==========================================================================
   ✨ 10道阅读理解选择题特制高级动态交互美化样式
   ========================================================================== */
.quiz-choice-btn {
    position: relative;
    transition: all 0.15s ease !important;
}

/* 允许用户在点击时有一个轻微的打击感压陷反馈 */
.quiz-choice-btn:active:not(:disabled) {
    transform: scale(0.995);
}

#quizContainer button:disabled {
    cursor: not-allowed !important;
}

/* ☀️ 正常日间模式默认样式 */
#quizSection h2,
#quizContainer div {
    color: #2c3e50 !important; 
}
.quiz-choice-btn {
    background: #ffffff !important;
    color: #2c3e50 !important;
    border: 1px solid #cbd5e1 !important;
}
.quiz-choice-btn:hover:not(:disabled) {
    background: #f8fafc !important;
}

/* 🌟 日间模式下：选中的高档国风蓝色样式 */
.quiz-choice-btn.selected {
    background: #f0f8ff !important;
    border: 2px solid #2980b9 !important; 
    color: #2980b9 !important;
    font-weight: 700 !important;
    box-shadow: 0 4px 15px rgba(41, 128, 185, 0.18) !important;
}

/* 🟢 日间模式下揭晓正确答案的【浅绿色版】高级卡片风格 */
.quiz-choice-btn.correct-answer-hint {
    background: #f4fbf7 !important;       
    border: 2px solid #2ecc71 !important; 
    color: #27ae60 !important;            
    font-weight: 700 !important;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.15) !important;
}

/* 🌟 🌙 暗黑模式下的无缝换肤接管 */
[data-theme="dark"] #quizSection h2,
[data-theme="dark"] #quizContainer,
[data-theme="dark"] #quizContainer div {
    color: #e0e0e0 !important; 
}

/* 暗黑模式未选中按钮状态 */
[data-theme="dark"] .quiz-choice-btn {
    background: #2d2d2d !important;
    color: #e0e0e0 !important;
    border: 1px solid #475569 !important;
}
[data-theme="dark"] .quiz-choice-btn:hover:not(:disabled) {
    background: #3d3d3d !important;
}

/* 🌟 🌙 暗黑模式下：选中的科技荧光蓝样式 */
[data-theme="dark"] .quiz-choice-btn.selected {
    background: #1a252f !important;      
    border: 2px solid #3498db !important; 
    color: #5dade2 !important;            
    font-weight: 700 !important;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3) !important;
}

/* 🟢 🌙 暗黑模式下：揭晓正确答案的【浅绿夜色版】卡片风格 */
[data-theme="dark"] .quiz-choice-btn.correct-answer-hint {
    background: #1e2d24 !important;       
    border: 2px solid #2ecc71 !important; 
    color: #58d68d !important;            
    font-weight: 700 !important;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.25) !important;
}

/* ==========================================================================
   👨‍🏫 文本赏析板块特制高级交互与跨模式主题样式
   ========================================================================== */
.teacher-p-analysis, [id^="q-analysis-"] {
    background: #faf5ff !important;
    border-left: 3px solid #af7ac5 !important;
    color: #6c3483 !important;
}
#teacherArticleAnalysis {
    background: #f3e5f5 !important;
    border-left: 4px solid #9b59b6 !important;
    color: #4a148c !important;
}
[data-theme='dark'] #teacherArticleAnalysis {
    background: #251833 !important;       
    border-left: 4px solid #bb86fc !important;   
    color: #e1bee7 !important;             
}
[data-theme='dark'] .teacher-p-analysis, 
[data-theme='dark'] [id^="q-analysis-"] {
    background: #1d1226 !important;       
    border-left: 3px solid #a278b5 !important;   
    color: #d7bde2 !important;             
}

/* 📱 响应式适配移动端手机 */
@media (max-width: 600px) {
    body { padding: 15px 10px; }
    .article-card { padding: 30px 20px; }
    #content p { font-size: 17px; }
    .quiz-options { grid-template-columns: 1fr; }
}