/* 书库区域样式 */
.book-library-section .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #fd7e14;
}

.book-library-section .section-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 0;
}

/* 轮播容器样式 */
#bookCarousel {
    padding: 0 2rem;
}

/* 书籍卡片样式 */
.book-item {
    position: relative;
    margin: 0.3rem;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.book-link {
    text-decoration: none;
    color: inherit;
}

.book-cover {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

/* 悬停效果 */
.book-hover-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    padding: 1rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.book-hover-info h4 {
    color: white;
    font-size: 1rem;
    margin: 0 0 0.5rem 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.book-hover-info p {
    color: #ddd;
    font-size: 0.9rem;
    margin: 0;
    font-style: italic;
}

.book-item:hover {
    transform: translateY(-5px);
}

.book-item:hover .book-cover img {
    transform: scale(1.05);
}

.book-item:hover .book-hover-info {
    transform: translateY(0);
}

/* 轮播控制按钮样式 */
.carousel-control-prev,
.carousel-control-next {
    width: 40px;
    height: 40px;
    background: #fd7e14;
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.8;
}

.carousel-control-prev {
    left: -10px;
}

.carousel-control-next {
    right: -10px;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
    opacity: 1;
}

/* 深色模式适配 */
[data-bs-theme="dark"] .book-library-section {
    background: #242424;
}

[data-bs-theme="dark"] .book-item {
    background: #2a2a2a;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .carousel-item .row {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        margin: 0 -0.5rem;
    }

    .carousel-item .col-md-2-4 {
        flex: 0 0 auto;
        width: 40%;
        padding: 0 0.5rem;
    }

    .book-cover {
        height: 150px;
    }
}

/* 小屏幕设备优化 */
@media (max-width: 576px) {
    .carousel-item .col-md-3 {
        width: 45%;  /* 稍微调整宽度以确保显示效果 */
    }
}

/* 添加自定义的5列布局类 */
.col-md-2-4 {
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
}

@media (min-width: 768px) {
    .col-md-2-4 {
        flex: 0 0 20%;
        max-width: 20%;
    }
}