/* 阅读模式专用样式 */
.reading-mode body {
    background-color: #f5f5f5;
    font-family: var(--font-serif);
}

.reading-container {
    background-color: var(--secondary-bg);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px var(--shadow-color);
    overflow: hidden;
}

.chapter-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
    background-color: #f9f9f9;
}

.chapter-header h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

.chapter-content {
    padding: var(--spacing-lg, 2rem);
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-primary);
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.chapter-content p {
    margin-bottom: var(--spacing-md, 1.2rem);
    text-indent: 2em;
    text-align: justify;
    hyphens: auto;
    orphans: 2;
    widows: 2;
}

.chapter-content p:last-child {
    margin-bottom: 0;
}

/* 增强移动端阅读体验 */
@media (max-width: 768px) {
    .reading-container {
        padding: 15px;
    }
    
    .chapter-content {
        padding: 15px 0;
        /* 在小屏幕上优化阅读体验 */
        text-align: justify;
    }
    
    .chapter-content p {
        line-height: 1.7;
        font-size: 1rem;
        text-indent: 1.5em;
    }
    
    /* 优化触摸区域 */
    .prev-page, .next-page, .prev-chapter, .next-chapter {
        padding: 1rem;
        min-height: 48px;
    }
    
    /* 优化移动端设置面板 */
    .reading-settings-panel {
        width: 90%;
        left: 5%;
        top: 20%;
    }
    
    /* 优化阅读设置按钮在移动端的位置 */
    .reading-settings-button {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    /* 优化面包屑导航在阅读页面的显示 */
    .breadcrumb {
        font-size: 0.8rem;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
        margin-bottom: 10px;
    }
    
    /* 优化章节导航在移动端的显示 */
    .prev-chapter, .next-chapter {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
}

/* 分页导航 */
.pagination {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: #f9f9f9;
}

.page-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.page-info {
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-align: center;
}

.prev-page,
.next-page {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    transition: background-color 0.2s ease;
}

.prev-page:hover,
.next-page:hover {
    background-color: var(--accent-hover);
}

/* 章节导航 */
.chapter-nav {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--secondary-bg);
}

.nav-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.prev-chapter,
.next-chapter {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--primary-bg);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    text-align: center;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.prev-chapter:hover,
.next-chapter:hover {
    background-color: var(--accent-color);
    color: white;
}

/* 阅读模式优化 */
@media (max-width: 768px) {
    .chapter-header h2 {
        font-size: 1.5rem;
    }
    
    .chapter-content {
        font-size: 1rem;
        padding: var(--spacing-md);
    }
    
    .nav-buttons {
        flex-direction: column;
    }
    
    .prev-chapter,
    .next-chapter {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .chapter-header,
    .chapter-content,
    .pagination,
    .chapter-nav {
        padding: var(--spacing-sm);
    }
    
    .chapter-header h2 {
        font-size: 1.3rem;
    }
    
    .chapter-content {
        font-size: 0.95rem;
        line-height: 1.7;
    }
}

/* 滚动进度指示器 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 9999;
    /* 防止在iOS设备上的状态栏下消失 */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.scroll-progress-bar {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.1s ease;
}

/* 阅读设置按钮 */
.reading-settings-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    border: none;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reading-settings-button:hover {
    background-color: var(--accent-hover);
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

/* 阅读设置面板 */
.reading-settings-panel {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 300px;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.settings-header {
    padding: 15px 20px;
    background-color: var(--accent-color);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.settings-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.close-settings {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.close-settings:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.settings-content {
    padding: 20px;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* 字体大小和行间距控制 */
.font-size-controls,
.line-height-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--secondary-bg);
    border-radius: 8px;
    padding: 5px;
}

.font-size-controls button,
.line-height-controls button {
    width: 40px;
    height: 40px;
    border: none;
    background-color: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: bold;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.font-size-controls button:hover,
.line-height-controls button:hover {
    background-color: var(--accent-color);
    color: white;
}

.font-size-controls span,
.line-height-controls span {
    font-size: 0.95rem;
    color: var(--text-primary);
    min-width: 40px;
    text-align: center;
}

/* 背景颜色和文字颜色选项 */
.background-options,
.text-color-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.background-option,
.text-color-option {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.background-option:hover,
.text-color-option:hover {
    transform: scale(1.1);
}

.background-option.active,
.text-color-option.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
}

/* 重置按钮 */
#reset-settings {
    width: 100%;
    padding: 10px;
    background-color: var(--secondary-bg);
    border: none;
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

#reset-settings:hover {
    background-color: var(--accent-color);
    color: white;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .reading-settings-panel {
        width: calc(100% - 40px);
        right: 20px;
        bottom: 80px;
    }
    
    .reading-settings-button {
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .reading-settings-panel {
        width: calc(100% - 20px);
        right: 10px;
        left: 10px;
    }
    
    .reading-settings-button {
        bottom: 15px;
        right: 15px;
        width: 45px;
        height: 45px;
    }
}