.container-fluid-book{
    padding: 0% 15%;    
}
/* Alertas */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Grid de libros */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.book-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s;
}

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

.book-cover {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.book-cover-placeholder {
    width: 100%;
    height: 200px;
    background: #ecf0f1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.book-info {
    padding: 1.5rem;
}

.book-info h3 {
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.book-description {
    color: #7f8c8d;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    height: auto;
    z-index: 1;
}

/* Detalle del libro */
.book-detail {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin: 2rem auto;
    position: relative;
}

.book-detail-cover {
    max-width: 200px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.back-button {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: #e74c3c;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s;
}

.book-header {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.book-header-info h1 {
    color: #2c3e50;
    margin-bottom: 1rem;
    text-transform: capitalize;
}

.book-detail-description{
    display: -webkit-box;
    -webkit-line-clamp: 10;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    height: auto;
    height: 12vh;
    z-index: 12;
}

.preview-info {
    background: #e8f4fd;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    text-align: center;
}

.pdf-viewer-container {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.pdf-viewer {
    max-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.pdf-viewer canvas{
    max-width: 100%;
    max-height: 100%;
    object-fit: scale-down;
}

.page-navigation {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.page-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #007bff;
    background: white;
    color: #007bff;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.page-btn.active,
.page-btn:hover {
    background: #007bff;
    color: white;
}

.action-buttons {
    text-align: start;
    margin: 2rem 0;
}

/* formularios de solicitud de libros */
.contact-form-page {
    margin : 2rem auto;
    background: #c3c3c366;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Comentarios */
.comments-section {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.comment-item {
    border-bottom: 1px solid #ecf0f1;
    padding: 1rem 0;
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.comment-date {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.comment-form {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid #ecf0f1;
}

/* Formularios */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
}

/* Botones */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
}

.btn-primary {
    background: #007bff;
    color: white;
}

.btn-primary:hover {
    background: #0056b3;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #1e7e34;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #545b62;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    animation: modalSlideIn 0.3s;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #dee2e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close {
    font-size: 2rem;
    cursor: pointer;
    color: #6c757d;
}

.close:hover {
    color: #333;
}

.modal-body {
    padding: 1.5rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container-fluid-book {
        padding: 0% 5%;
    }

    .book-header {
        flex-direction: column;
        text-align: center;
    }

    .book-detail-cover{
        width: 100%;
        max-width: max-content;
    }

    .action-buttons{
        text-align: center;
    }

    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .page-navigation {
        flex-wrap: wrap;
    }
}