/* ========================================
   阅读理解模块样式
   ======================================== */

:root {
    --ink-bg: #FAF9F6;
    --ink-paper: #F4F1EA;
    --ink-text: #2C2C2C;
    --ink-text-light: #5A5A5A;
    --ink-muted: #8B8B8B;
    --ink-accent: #8B7355;
    --ink-border: #E0DCD4;

    --n5-color: #4CAF50;
    --n4-color: #8BC34A;
    --n3-color: #FFC107;
    --n2-color: #FF9800;
    --n1-color: #F44336;
}

/* 暗色模式适配 */
html.theme-dark {
    --ink-bg: #1a1a2e;
    --ink-paper: #16213e;
    --ink-text: #e8e8e8;
    --ink-text-light: #b0b0b0;
    --ink-muted: #888;
    --ink-accent: #b8956c;
    --ink-border: #3a3a5a;
}

/* ========================================
   阅读首页
   ======================================== */

.reading-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 100vh;
}

.reading-header {
    text-align: center;
    margin-bottom: 40px;
}

.reading-header h1 {
    font-size: 32px;
    margin-bottom: 8px;
    color: var(--ink-text);
}

.reading-header .subtitle {
    color: var(--ink-muted);
    font-size: 16px;
}

/* 精选文章 */
.featured-section {
    margin-bottom: 48px;
}

.featured-section h2 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--ink-text);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.featured-card {
    display: block;
    background: var(--ink-paper);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.featured-cover {
    height: 160px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.featured-info {
    padding: 20px;
}

.featured-info h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--ink-text);
}

.featured-info p {
    font-size: 14px;
    color: var(--ink-text-light);
    margin-bottom: 12px;
}

.featured-info .meta {
    font-size: 12px;
    color: var(--ink-muted);
}

.featured-info .meta span {
    margin-right: 16px;
}

/* 难度标签 */
.difficulty-tag, .difficulty-badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    color: white;
    display: inline-block;
}

.difficulty-tag.N5, .difficulty-badge.N5 { background: var(--n5-color); }
.difficulty-tag.N4, .difficulty-badge.N4 { background: var(--n4-color); }
.difficulty-tag.N3, .difficulty-badge.N3 { background: var(--n3-color); }
.difficulty-tag.N2, .difficulty-badge.N2 { background: var(--n2-color); }
.difficulty-tag.N1, .difficulty-badge.N1 { background: var(--n1-color); }

/* 筛选栏 */
.filter-bar {
    display: flex;
    gap: 32px;
    margin-bottom: 32px;
    padding: 16px 20px;
    background: var(--ink-paper);
    border-radius: 12px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.filter-group label {
    font-size: 14px;
    color: var(--ink-text-light);
}

.filter-group select {
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--ink-border);
    background: var(--ink-bg);
    color: var(--ink-text);
    font-size: 13px;
}

.filter-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 6px 14px;
    border-radius: 20px;
    background: var(--ink-bg);
    border: 1px solid var(--ink-border);
    text-decoration: none;
    color: var(--ink-text);
    font-size: 13px;
    transition: all 0.2s;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--ink-accent);
    color: white;
    border-color: var(--ink-accent);
}

/* 文章卡片 */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.article-card {
    background: var(--ink-paper);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s;
}

.article-card:hover {
    transform: translateY(-2px);
}

.article-cover {
    position: relative;
    height: 140px;
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-cover .difficulty-badge {
    position: absolute;
    top: 10px;
    left: 10px;
}

.article-cover .category-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 8px;
    background: rgba(0,0,0,0.6);
    color: white;
    border-radius: 4px;
    font-size: 11px;
}

.article-content {
    padding: 20px;
}

.article-title {
    font-size: 16px;
    margin-bottom: 8px;
    line-height: 1.4;
    color: var(--ink-text);
}

.article-summary {
    font-size: 13px;
    color: var(--ink-text-light);
    margin-bottom: 12px;
    line-height: 1.5;
}

.article-meta {
    font-size: 12px;
    color: var(--ink-muted);
    margin-bottom: 16px;
}

.article-meta span {
    margin-right: 12px;
}

.article-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.action-btn {
    padding: 6px 12px;
    background: var(--ink-bg);
    border: 1px solid var(--ink-border);
    border-radius: 6px;
    font-size: 12px;
    text-decoration: none;
    color: var(--ink-text);
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--ink-accent);
    color: white;
    border-color: var(--ink-accent);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}

.page-btn {
    padding: 8px 14px;
    border-radius: 6px;
    background: var(--ink-paper);
    border: 1px solid var(--ink-border);
    text-decoration: none;
    color: var(--ink-text);
    font-size: 14px;
    transition: all 0.2s;
}

.page-btn:hover, .page-btn.active {
    background: var(--ink-accent);
    color: white;
    border-color: var(--ink-accent);
}

.page-ellipsis {
    padding: 8px;
    color: var(--ink-muted);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--ink-muted);
}

/* ========================================
   阅读器通用样式
   ======================================== */

.reader-container,
.parallel-container,
.intensive-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

.reader-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--ink-border);
    flex-wrap: wrap;
    gap: 12px;
}

.back-link {
    color: var(--ink-accent);
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}

.article-info h1 {
    font-size: 18px;
    margin: 0 12px 0 0;
    display: inline;
    color: var(--ink-text);
}

.mode-switch {
    display: flex;
    gap: 12px;
}

.mode-switch a, .mode-switch span {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    text-decoration: none;
    color: var(--ink-text-light);
}

.mode-switch a:hover {
    background: var(--ink-paper);
}

.mode-switch span.active {
    background: var(--ink-accent);
    color: white;
}

/* ========================================
   普通阅读模式
   ======================================== */

.article-main {
    flex: 1;
}

.article-text {
    font-family: 'Noto Serif JP', serif;
    font-size: 20px;
    line-height: 2;
    color: var(--ink-text);
}

.article-text .sentence {
    margin-bottom: 16px;
}

.article-text ruby {
    ruby-align: center;
}

.article-text rt {
    font-size: 10px;
    color: var(--ink-muted);
}

.translation-section {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--ink-border);
}

.btn-toggle-translation {
    background: var(--ink-paper);
    border: 1px solid var(--ink-border);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    color: var(--ink-text);
}

.translation-text {
    margin-top: 16px;
    padding: 20px;
    background: var(--ink-paper);
    border-radius: 8px;
    line-height: 1.8;
    color: var(--ink-text-light);
}

.article-sidebar {
    margin-top: 32px;
}

.sidebar-card {
    background: var(--ink-paper);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
}

.sidebar-card h4 {
    font-size: 14px;
    margin-bottom: 12px;
    color: var(--ink-text);
}

.sidebar-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-card li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--ink-border);
    font-size: 13px;
    color: var(--ink-text-light);
}

.sidebar-card li:last-child {
    border-bottom: none;
}

/* ========================================
   平行文本模式
   ======================================== */

.parallel-controls {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    padding: 12px 16px;
    background: var(--ink-paper);
    border-radius: 8px;
    flex-wrap: wrap;
}

.layout-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
}

.layout-btn {
    padding: 6px 12px;
    background: var(--ink-bg);
    border: 1px solid var(--ink-border);
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    color: var(--ink-text);
}

.layout-btn.active {
    background: var(--ink-accent);
    color: white;
    border-color: var(--ink-accent);
}

.translation-toggle label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
    color: var(--ink-text-light);
}

.parallel-content.side-layout .parallel-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 16px;
    margin-bottom: 8px;
    background: var(--ink-paper);
    border-radius: 8px;
    transition: background 0.2s;
}

.parallel-content.stack-layout .parallel-row {
    padding: 16px;
    margin-bottom: 8px;
    background: var(--ink-paper);
    border-radius: 8px;
}

.parallel-content.stack-layout .jp-column,
.parallel-content.stack-layout .cn-column {
    margin-bottom: 12px;
}

.parallel-row.highlighted {
    background: rgba(139, 115, 85, 0.1);
}

.jp-column {
    display: flex;
    gap: 12px;
}

.sentence-num {
    color: var(--ink-muted);
    font-size: 12px;
    min-width: 20px;
}

.jp-text {
    font-family: 'Noto Serif JP', serif;
    font-size: 18px;
    line-height: 1.8;
    cursor: pointer;
    color: var(--ink-text);
}

.cn-text {
    font-size: 15px;
    line-height: 1.6;
    color: var(--ink-text-light);
}

.cn-text.hidden-translation {
    color: transparent;
    background: var(--ink-border);
    border-radius: 4px;
    user-select: none;
}

.cn-text.hidden-translation.show-temp {
    color: var(--ink-text-light);
    background: transparent;
}

/* ========================================
   精读模式
   ======================================== */

.sentences-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sentence-block {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--ink-paper);
    border-radius: 12px;
}

.sentence-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-bg);
    border-radius: 50%;
    font-size: 14px;
    color: var(--ink-muted);
    flex-shrink: 0;
}

.sentence-content {
    flex: 1;
}

.japanese-text {
    font-size: 20px;
    line-height: 2;
    font-family: 'Noto Serif JP', serif;
    margin-bottom: 12px;
    color: var(--ink-text);
}

.chinese-text {
    font-size: 15px;
    color: var(--ink-text-light);
    margin-bottom: 16px;
    padding-left: 12px;
    border-left: 2px solid var(--ink-border);
}

.btn-expand {
    background: none;
    border: 1px dashed var(--ink-border);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    color: var(--ink-accent);
}

.btn-expand:hover {
    background: rgba(139, 115, 85, 0.05);
}

.sentence-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn-favorite, .btn-note {
    background: none;
    border: 1px solid var(--ink-border);
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    color: var(--ink-muted);
    transition: all 0.2s;
}

.btn-favorite:hover, .btn-note:hover {
    background: var(--ink-bg);
    color: var(--ink-accent);
}

.btn-favorite.favorited {
    background: var(--ink-accent);
    color: white;
    border-color: var(--ink-accent);
}

/* 语法分析 */
.grammar-analysis {
    margin-top: 20px;
    padding: 20px;
    background: var(--ink-bg);
    border-radius: 8px;
}

.analysis-content h4 {
    font-size: 14px;
    margin-bottom: 12px;
    color: var(--ink-text);
}

.tokens-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.token {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 12px;
    background: var(--ink-paper);
    border-radius: 6px;
    cursor: pointer;
}

.token:hover {
    background: var(--ink-border);
}

.token-surface {
    font-size: 16px;
    color: var(--ink-text);
}

.token-pos {
    font-size: 11px;
    color: var(--ink-muted);
}

.structure-info {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.structure-item {
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 13px;
}

.structure-item.subject { background: #E3F2FD; color: #1565C0; }
.structure-item.object { background: #FFF3E0; color: #E65100; }
.structure-item.predicate { background: #E8F5E9; color: #2E7D32; }

html.theme-dark .structure-item.subject { background: #1a3a5c; }
html.theme-dark .structure-item.object { background: #5c3a1a; }
html.theme-dark .structure-item.predicate { background: #1a5c3a; }

.grammar-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.grammar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: var(--ink-paper);
    border-radius: 6px;
}

.grammar-level {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    color: white;
}

.grammar-level.N5 { background: var(--n5-color); }
.grammar-level.N4 { background: var(--n4-color); }
.grammar-level.N3 { background: var(--n3-color); }
.grammar-level.N2 { background: var(--n2-color); }
.grammar-level.N1 { background: var(--n1-color); }

.grammar-name {
    font-weight: 500;
    color: var(--ink-text);
}

.grammar-meaning {
    color: var(--ink-text-light);
    font-size: 13px;
}

.explanation-section {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--ink-border);
    color: var(--ink-text-light);
    font-size: 14px;
}

/* ========================================
   速读训练
   ======================================== */

.speed-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 100vh;
}

.speed-setup {
    text-align: center;
}

.speed-setup h1 {
    font-size: 32px;
    margin-bottom: 32px;
    color: var(--ink-text);
}

.article-preview {
    padding: 24px;
    background: var(--ink-paper);
    border-radius: 12px;
    margin-bottom: 32px;
}

.article-preview h2 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--ink-text);
}

.article-preview .meta {
    color: var(--ink-muted);
    font-size: 14px;
}

.time-setting {
    margin-bottom: 32px;
}

.time-setting > label {
    display: block;
    margin-bottom: 12px;
    font-size: 16px;
    color: var(--ink-text);
}

.time-options {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 16px 0;
    flex-wrap: wrap;
}

.time-btn {
    padding: 12px 24px;
    border: 2px solid var(--ink-border);
    border-radius: 8px;
    background: var(--ink-bg);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
    color: var(--ink-text);
}

.time-btn:hover, .time-btn.active {
    border-color: var(--ink-accent);
    background: var(--ink-accent);
    color: white;
}

.custom-time {
    margin-top: 16px;
    color: var(--ink-text-light);
}

.custom-time input {
    width: 80px;
    padding: 8px;
    border: 1px solid var(--ink-border);
    border-radius: 6px;
    text-align: center;
    background: var(--ink-bg);
    color: var(--ink-text);
}

.btn-start {
    padding: 16px 48px;
    background: var(--ink-accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-start:hover {
    background: #7a654a;
}

.back-link-container {
    margin-top: 24px;
}

/* 计时器 */
.timer-bar {
    position: sticky;
    top: 0;
    height: 8px;
    background: var(--ink-border);
    margin-bottom: 24px;
    border-radius: 4px;
    overflow: hidden;
}

.timer-progress {
    height: 100%;
    background: var(--ink-accent);
    transition: width 0.1s linear;
}

.timer-progress.warning {
    background: #F44336;
}

.timer-text {
    position: absolute;
    right: 0;
    top: 16px;
    font-size: 14px;
    color: var(--ink-muted);
}

.speed-reading .article-content {
    background: var(--ink-paper);
    padding: 32px;
    border-radius: 12px;
}

.speed-reading .article-content h1 {
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--ink-text);
}

.speed-reading .article-text {
    font-size: 18px;
    line-height: 2;
    color: var(--ink-text);
}

.btn-finish {
    display: block;
    margin: 32px auto;
    padding: 14px 32px;
    background: var(--ink-accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
}

.btn-finish:hover {
    background: #7a654a;
}

/* 测验 */
.speed-quiz {
    padding: 24px;
    background: var(--ink-paper);
    border-radius: 12px;
}

.speed-quiz h2 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--ink-text);
}

.quiz-intro {
    color: var(--ink-muted);
    margin-bottom: 24px;
}

.quiz-item {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--ink-border);
}

.question {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--ink-text);
}

.options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--ink-bg);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    color: var(--ink-text);
}

.option:hover {
    background: var(--ink-border);
}

.option input {
    width: 18px;
    height: 18px;
}

.btn-submit-quiz {
    display: block;
    width: 100%;
    padding: 14px;
    background: var(--ink-accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    margin-top: 16px;
}

.btn-submit-quiz:hover {
    background: #7a654a;
}

.no-quiz {
    text-align: center;
    padding: 40px 20px;
    color: var(--ink-muted);
}

/* 结果 */
.speed-result h2 {
    text-align: center;
    font-size: 24px;
    margin-bottom: 32px;
    color: var(--ink-text);
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--ink-paper);
    border-radius: 12px;
}

.stat-value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--ink-accent);
}

.stat-label {
    font-size: 14px;
    color: var(--ink-muted);
}

.quiz-review h3 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--ink-text);
}

.review-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    margin-bottom: 8px;
    border-radius: 8px;
}

.review-item.correct {
    background: rgba(76, 175, 80, 0.1);
}

.review-item.wrong {
    background: rgba(244, 67, 54, 0.1);
}

.review-num {
    font-weight: 600;
    color: var(--ink-text);
}

.review-status {
    font-size: 18px;
}

.review-answer {
    color: var(--ink-text-light);
    font-size: 13px;
}

.review-explanation {
    margin-top: 4px;
    font-size: 13px;
    color: var(--ink-muted);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
}

.result-actions button, .result-actions a {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 15px;
    text-decoration: none;
    cursor: pointer;
}

.result-actions button {
    background: var(--ink-accent);
    color: white;
    border: none;
}

.result-actions button:hover {
    background: #7a654a;
}

.result-actions a {
    background: var(--ink-bg);
    color: var(--ink-text);
    border: 1px solid var(--ink-border);
}

.result-actions a:hover {
    background: var(--ink-paper);
}

/* ========================================
   弹窗通用样式
   ======================================== */

.word-popup, .modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.popup-content, .modal-content {
    background: var(--ink-bg);
    border-radius: 12px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.popup-header, .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.popup-header #popup-word {
    font-size: 24px;
    font-weight: 600;
    color: var(--ink-text);
}

.popup-header #popup-reading {
    font-size: 14px;
    color: var(--ink-muted);
    margin-left: 12px;
}

.modal-header h3 {
    font-size: 18px;
    margin: 0;
    color: var(--ink-text);
}

.btn-close-popup, .btn-close-modal {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--ink-muted);
}

.popup-body, .modal-body {
    margin-bottom: 16px;
}

.popup-body p {
    margin-bottom: 8px;
    color: var(--ink-text-light);
}

.modal-body textarea {
    width: 100%;
    min-height: 120px;
    padding: 12px;
    border: 1px solid var(--ink-border);
    border-radius: 8px;
    resize: vertical;
    font-size: 14px;
    background: var(--ink-paper);
    color: var(--ink-text);
}

.popup-footer, .modal-footer {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.btn-mark, .btn-save, .btn-cancel {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    border: 1px solid var(--ink-border);
}

.btn-mark {
    background: var(--ink-paper);
    color: var(--ink-text);
}

.btn-mark:hover {
    background: var(--ink-accent);
    color: white;
    border-color: var(--ink-accent);
}

.btn-save {
    background: var(--ink-accent);
    color: white;
    border-color: var(--ink-accent);
}

.btn-cancel {
    background: var(--ink-bg);
    color: var(--ink-text);
}

/* 隐藏元素 */
.hidden {
    display: none !important;
}

/* 加载中 */
.loading {
    text-align: center;
    padding: 20px;
    color: var(--ink-muted);
}

.error {
    color: #F44336;
    text-align: center;
    padding: 20px;
}

/* ========================================
   响应式
   ======================================== */

@media (max-width: 768px) {
    .featured-grid {
        grid-template-columns: 1fr;
    }

    .filter-bar {
        flex-direction: column;
        gap: 16px;
    }

    .result-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .reader-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .mode-switch {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .parallel-content.side-layout .parallel-row {
        grid-template-columns: 1fr;
    }

    .sentence-block {
        flex-direction: column;
    }

    .sentence-actions {
        flex-direction: row;
    }
}

@media (max-width: 480px) {
    .result-stats {
        grid-template-columns: 1fr 1fr;
    }

    .time-options {
        flex-direction: column;
    }

    .time-btn {
        width: 100%;
    }
}