@charset "utf-8";
/* CSS Document */
   * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
           font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            padding: 20px 0;
            font-size: 0.9rem;
            color: var(--gray);
            display: flex;
            flex-wrap: wrap;
        }
        
        .breadcrumb a {
            color: var(--primary);
            transition: var(--transition);
        }
        
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        
        .breadcrumb .separator {
            margin: 0 8px;
            color: var(--gray);
        }
        
        /* 图书详情头部 */
        .book-header {
            display: flex;
            gap: 40px;
            margin: 30px 0 40px;
            background: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: var(--shadow);
        }
        
        .book-cover {
            flex: 0 0 280px;
            position: relative;
        }
        
  .cover-container {
    width: 100%;
    padding-top: 133.33%; /* 保持3:4宽高比 */
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    
    /* 背景设置 */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    
    /* 移除半透明叠加层 */
    background-color: transparent;
    background-blend-mode: normal;
}

.cover-container::after {
    /* 完全移除阴影效果 */
    content: none;
}

.cover-content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
  
    padding: 20px;
    text-align: left;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    
    /* 调整内容布局，使标题区域占据更多空间 */
    justify-content: flex-end;
  align-items: flex-start; /* 元素左对齐 */
}

.cover-content h1 {
    font-family: var(--serif);
    font-size: clamp(1.8rem, 5vw, 2.5rem); /* 响应式字体大小 */
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 15px;
    line-height: 1.2;
    
    /* 调整位置，距离底部有一定距离 */
    margin-top: 0;
}

.cover-content h2 {
    font-family: var(--serif);
    font-size: clamp(1rem, 3vw, 1.3rem); /* 响应式字体大小 */
    font-weight: 400;
    opacity: 0.9;
    margin-bottom: 15px;
    
    /* 调整位置，在h1下方 */
    margin-top: 0;
}

.cover-content .author {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem); /* 响应式字体大小 */
    margin-top: 0;
    margin-bottom: 15px;
    
    /* 调整位置，在h2下方 */
    order: 3;
}

/* 增强文字样式 */
.cover-content h1,
.cover-content h2,
.cover-content .author {
    /* 白色描边 */
    text-stroke: 1px rgba(255, 255, 255, 0.8);
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.8);
    /* 深色阴影 */
    text-shadow: 
        1px 1px 3px rgba(0, 0, 0, 0.8),
        -1px -1px 3px rgba(0, 0, 0, 0.5);
		   display: inline-block;
    padding: 0 10px;
    background-color: rgba(0, 0, 0, 0.5); /* 半透明黑色衬底 */
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
	color: white;
    text-shadow: 
        0 0 8px rgba(0, 0, 0, 0.8), /* 外发光阴影 */
        0 0 3px rgba(0, 0, 0, 0.5);  /* 增强对比 */
}

/* 移动端优化 */
@media (max-width: 576px) {
    .cover-content {
        padding: 10px;
    }
    
    .cover-content h1 {
        margin-bottom: 10px;
    }
    
    .cover-content h2 {
        margin-bottom: 10px;
    }
}
        
        .book-title {
            font-family: var(--serif);
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 5px;
        }
        
        .book-subtitle {
            font-size: 1.3rem;
            color: var(--gray);
            margin-bottom: 15px;
            font-weight: 400;
        }
        
        /* 新增标签样式 */
        .book-tags {
            margin: 15px 0 25px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        
        .tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(44, 110, 155, 0.1);
            border-radius: 15px;
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
        }
        
        .tag:hover {
            background: rgba(44, 110, 155, 0.2);
            transform: translateY(-2px);
        }
        
        .book-meta {
            display: flex;
            gap: 30px;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--light-gray);
            flex-wrap: wrap;
        }
        
        .meta-item {
            display: flex;
            flex-direction: column;
            min-width: 120px;
        }
        
        .meta-label {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 5px;
        }
        
        .meta-value {
            font-size: 1.1rem;
            font-weight: 500;
        }
        
        .action-buttons {
            display: flex;
            gap: 15px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        
        .btn {
            padding: 12px 25px;
            border-radius: 30px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            outline: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            white-space: nowrap;
        }
        
        .btn-primary {
            background: var(--primary);
            color: white;
        }
        
        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 0 0 3px rgba(44, 110, 155, 0.3);
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        
        .btn-outline:hover, .btn-outline:focus {
            background: rgba(44, 110, 155, 0.1);
            transform: translateY(-2px);
        }
        
        .book-rating {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 25px;
        }
        
        .rating-stars {
            color: #f8ce0b;
            font-size: 1.2rem;
        }
        
        .rating-text {
            font-size: 1.1rem;
            font-weight: 500;
        }
        
        /* 图书简介 */
        .book-section {
            background: white;
            border-radius: 10px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        
        .section-title {
            font-size: 1.6rem;
            margin-bottom: 20px;
            padding-bottom: 15px;
            position: relative;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        
        .section-title i {
            margin-right: 10px;
            color: var(--secondary);
        }
        
        .book-intro {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #444;
        }
        
        .book-intro p {
            margin-bottom: 20px;
            text-align: justify;
        }
        
        .intro-highlight {
            background: rgba(74, 157, 140, 0.1);
            padding: 20px;
            border-left: 3px solid var(--secondary);
            margin: 25px 0;
            font-style: italic;
            color: var(--dark);
        }
        
        /* 章节目录 */
        .chapters-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 15px;
        }
        
        .chapter-group {
            margin-bottom: 25px;
        }
        
        .group-title {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--primary);
            padding-bottom: 8px;
            border-bottom: 1px solid var(--light-gray);
        }
        
        .chapter-list {
            list-style: none;
        }
        
        .chapter-item {
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 8px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            border-left: 3px solid var(--light-gray);
            cursor: pointer;
        }
        
        .chapter-item:hover, .chapter-item:focus {
            background: rgba(44, 110, 155, 0.05);
            border-left-color: var(--primary);
            transform: translateX(5px);
        }
        
        .chapter-item.read {
            border-left-color: var(--secondary);
            background: rgba(74, 157, 140, 0.05);
            position: relative;
        }
        
        .chapter-item.read::before {
            content: '✓';
            color: var(--secondary);
            margin-right: 10px;
            font-weight: bold;
        }
        
        .chapter-item .num {
            width: 30px;
            color: var(--gray);
            font-weight: 500;
        }
        
        .chapter-item .title {
            flex: 1;
        }
        
        .chapter-item .pages {
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        /* 阅读设置 */
        .reading-settings {
            display: flex;
            flex-direction: column;
            gap: 15px;
            background: var(--light);
            padding: 15px 20px;
            border-radius: 8px;
            margin-bottom: 25px;
        }
        
        .setting-group {
            display: flex;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
        }
        
        .setting-btn {
            background: white;
            border: 1px solid var(--border);
            border-radius: 5px;
            padding: 8px 15px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .setting-btn:hover, .setting-btn:focus {
            border-color: var(--primary);
            color: var(--primary);
        }
        
        .setting-btn.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }
         /* 弹窗样式 */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }
        
        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .modal {
            background: white;
            border-radius: 10px;
            width: 200px;
            height: 200px;
            padding: 20px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.2);
            position: relative;
            transform: translateY(20px);
            transition: var(--transition);
        }
        
        .modal-overlay.active .modal {
            transform: translateY(0);
        }
        
        .modal-close {
            position: absolute;
            top: 10px;
            right: 10px;
            background: none;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            color: var(--gray);
            transition: var(--transition);
        }
        
        .modal-close:hover {
            color: var(--primary);
        }
        
        .modal-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100%;
            text-align: center;
            gap: 10px;
        }
        
        .modal-image {
            width: 80px;
            height: 80px;
            object-fit: cover;
            border-radius: 50%;
            border: 2px solid var(--secondary);
        }
        
        .modal-text {
            font-size: 1rem;
            color: var(--dark);
        }
        
        
	    /* 相关图书 */
        .related-books {
            margin-top: 40px;
        }
        
        .books-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 25px;
        }
        
        .book-card {
            text-align: center;
            transition: var(--transition);
            background: white;
            border-radius: 10px;
            padding: 15px;
            box-shadow: var(--shadow);
        }
        
        .book-card:hover, .book-card:focus-within {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        }
        
        .book-card .cover {
            position: relative;
            width: 100%;
            padding-top: 133.33%;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin-bottom: 15px;
            background: linear-gradient(45deg, #6a9bd1, #8dc8b4);
            color: white;
        }
        
        .book-card .cover-content {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 15px;
        }
        
        .book-card .title {
            font-weight: 600;
            margin-bottom: 5px;
            font-size: 1.05rem;
        }
        
        .book-card .author {
            color: var(--gray);
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
    .book-cover {
        flex: 0 0 auto;
        width: 200px; /* 固定宽度 */
        height: auto;
        margin: 0 auto 20px;
    }
    
    .cover-container {
        padding-top: 0;
        height: 270px; /* 180x1.33≈240，保持3:4比例 */
    }
    
    .cover-content {
        padding: 20px;
    }
    
    .cover-content h1 {
        font-size: 1.8rem;
        padding: 3px 10px;
        -webkit-text-stroke: 0.5px rgba(0, 0, 0, 0.3);
    }
    
    .cover-content h2 {
        font-size: 1.1rem;
        padding: 3px 10px;
    }
    
    .cover-content .author {
        font-size: 0.9rem;
    }
}

/* 超小屏幕调整 */
@media (max-width: 480px) {
    .book-cover {
        width: 150px;
    }
    
    .cover-container {
        height: 200px; /* 150x1.33≈200 */
    }
    
    .cover-content h1 {
        font-size: 1.5rem;
    }
    
    .cover-content h2 {
        font-size: 1rem;
    }
}
        
     
        /* 移动端目录折叠 */
        @media (max-width: 768px) {
            .chapter-group {
                border: 1px solid var(--border);
                border-radius: 8px;
                padding: 0 15px;
                margin-bottom: 15px;
            }
            
            .group-title {
                cursor: pointer;
                padding: 15px 0;
                margin-bottom: 0;
                position: relative;
            }
            
            .group-title::after {
                content: '+';
                position: absolute;
                right: 0;
                top: 50%;
                transform: translateY(-50%);
                font-size: 1.2rem;
                color: var(--gray);
            }
            
            .group-title.active::after {
                content: '-';
            }
            
            .chapter-list {
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }
            
            .group-title.active + .chapter-list {
                max-height: 1000px;
                padding-bottom: 15px;
            }
            
            /* 固定移动端操作栏 */
            .action-buttons {
                position: sticky;
                bottom: 0;
                background: white;
                padding: 10px 15px;
                margin: 0 -15px;
                box-shadow: 0 -5px 15px rgba(0,0,0,0.1);
                z-index: 100;
            }
			
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-links,
            .user-actions {
                display: none;
            }
            
            .book-header {
                flex-direction: column;
                gap: 30px;
            }
            
            .book-cover {
                flex: 0 0 auto;
                max-width: 300px;
                margin: 0 auto;
            }
            
            .action-buttons {
                justify-content: center;
            }
            
            .section-title {
                font-size: 1.4rem;
            }
        }
        
        @media (max-width: 768px) {
            .breadcrumb {
                font-size: 0.8rem;
            }
            
            .book-title {
                font-size: 1.8rem;
            }
            
            .book-subtitle {
                font-size: 1.1rem;
            }
            
            .book-meta {
                gap: 15px;
            }
            
            .meta-item {
                min-width: 100px;
            }
            
            .chapters-container {
                grid-template-columns: 1fr;
            }
            
            .reading-settings {
                flex-direction: column;
                gap: 15px;
            }
            
            .setting-group {
                flex-wrap: wrap;
            }
            
            .books-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            }
            
            .search-box input {
                width: 150px;
            }
			 .cover-container {
        background-color: rgba(26, 60, 95, 0.7); /* 移动端加深叠加层 */
    }
	  /* 调整弹窗大小 */
            .modal {
                width: 180px;
                height: 180px;
                padding: 15px;
            }
            
            .modal-image {
                width: 60px;
                height: 60px;
            }
}
        
        @media (max-width: 480px) {
            .book-header {
                padding: 20px;
            }
            
            .book-cover {
                max-width: 220px;

            }
            
            .cover-content h1 {
                font-size: 105rem;
            }
            
            .cover-content h2 {
                font-size: 1.1rem;
            }
            
            .action-buttons .btn {
                padding: 10px 15px;
                font-size: 0.9rem;
                flex: 1;
                min-width: 120px;
            }
            
            .books-grid {
                grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
                gap: 15px;
            }
        }