.sidebar {
    height: 100%;
    width: 250px;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #343a40;
    padding-top: 20px;
}

.sidebar a {
    padding: 15px;
    text-decoration: none;
    font-size: 18px;
    color: white;
    display: block;
    transition: 0.3s;
}

.sidebar a:hover {
    background-color: #007bff;
}

.page-content {
    margin-top: 80px;
    padding: 20px;
}

.library-img {
    max-height: 400px;
    object-fit: cover;
    margin-bottom: 20px;
    border-radius: 10px;
    transition: transform 0.3s;
}

.library-img:hover {
    transform: scale(1.02);
}

.news-item {
    transition: box-shadow 0.3s;
}

.news-item:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.news-date {
    float: right;
    color: #6c757d;
}

.news-image {
    max-width: 100%;
    height: auto;
    margin: 20px 0;
    border-radius: 8px;
}


.book-cover-image {
    width: 140px;
    height: 200px;
    margin: 20px auto; /* Auto left & right margins center it */
    border-radius: 8px;
    display: block; /* Ensures it behaves like a block element */
}

.book-shelf {
    margin-top: 80px;
    height: 750px;  /* Set the visible height */
    overflow: hidden; /* Hide the overflowed 200px */
}

/* Mobile Styles */
@media (max-width: 767px) {
    .sidebar {
        left: -250px;
        transition: 0.3s;
        z-index: 1000;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .mobile-menu-btn {
        position: fixed;
        top: 10px;
        left: 10px;
        z-index: 1001;
        padding: 10px 15px;
    }

    .book-shelf{
        margin-left: 0px;
    }
}

/* News Detail Styles */
.news-detail {
    max-width: 800px;
    margin: 0 auto;
}

.news-meta {
    color: #6c757d;
    margin-bottom: 20px;
}

.page {
    display: none;
    animation: fadeIn 0.5s;
}

@keyframes fadeIn {
    from {opacity: 0;}
    to {opacity: 1;}
}

.news-card {
    transition: transform 0.3s;
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-5px);
}

.library-img {
    max-width: 340px;
    max-height: 200px;
    width: auto;
    height: auto;
    border-radius: 10px;
    object-fit: contain;
}

#backgroundImg{
    width:100vw;
    height:100vh;
    object-fit: cover;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: -1;
    opacity: 0.3;
}

.video-container {
    position: relative;
    width: 70%; 
    padding-bottom: calc(70% * 9 / 16); 
    margin: 0 auto; 
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.logo-section {
    display: flex;
    justify-content: center; /* Center horizontally */
    align-items: center; /* Center vertically (if needed) */
    width: 100%; /* Ensure it takes full width */
    height: auto; /* Adjust based on your layout */
    overflow: hidden; /* Keep this if necessary */
}

.logo-section img {
    max-width: 100%; /* Prevents overflow */
    height: auto; /* Maintains aspect ratio */
    display: block;
}