:root{--primary-blue:#1e5292;--dark-blue:rgb(22,65,117);--orange-gold:rgb(255,167,38);--white:#fff;--light-bg:#f9f9f9;--text-dark:#222;--text-medium:#444;--border-color:#ccc}.productBook-page{font-family:sans-serif;background:#fff;color:var(--text-dark);line-height:1.8}.productBook-hero{background:var(--primary-blue);padding:40px 20px;text-align:center;color:white}.hero-content{max-width:1400px;margin:0 auto}.productBook-hero h1{font-size:25px;font-weight:700;letter-spacing:1px;text-transform:uppercase}.productBook-wrapper{display:flex;gap:10px;max-width:1400px;margin:40px auto;padding:0 10px}.productBook-sidebar{width:180px;flex-shrink:0;top:10px;height:fit-content}.sidebar-card{background:white;border:1px solid var(--border-color);padding:10px;margin-bottom:20px}.sidebar-card h3{color:var(--primary-blue);font-size:12px;margin-bottom:15px;font-weight:700;letter-spacing:.5px;padding-bottom:10px;border-bottom:2px solid var(--primary-blue)}.sidebar-card ul{list-style:none;padding:0;margin-top:15px}.sidebar-card li{margin-bottom:8px;border-bottom:1px dotted #ddd;padding-bottom:8px}.sidebar-card li a{color:var(--text-medium);text-decoration:none;display:block;font-size:12px;transition:color .2s}.productBook-container{flex:1;min-width:0}.productBook-section{background:white;padding:10px;margin-bottom:10px;border:1px solid var(--border-color)}.productBooks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;width:100%}.book-card{background:white;border-radius:8px;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column;cursor:pointer}.book-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px rgba(0,0,0,.1)}.textbook-publications-page .book-cover{width:100%;height:270px;overflow:hidden;background:#f8f9fa;display:flex;align-items:center;justify-content:center;padding:12px;box-sizing:border-box}.textbook-publications-page .book-cover img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;transition:transform .3s;box-shadow:0 4px 10px rgba(0,0,0,.15);border-radius:2px}.textbook-publications-page .book-card:hover .book-cover img{transform:scale(1.05)}.book-info{padding:15px;flex-grow:1}.book-info h3{font-size:14px;font-weight:700}.book-info p{font-size:12.5px;font-style:italic;margin:5px 0 0;line-height:1.5}.book-info p,.co-authors-text{color:var(--text-medium)}@media (max-width:1024px){.productBooks-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}}@media (max-width:768px){.productBook-wrapper{flex-direction:column}.productBook-sidebar{width:100%;position:relative;top:0;margin-bottom:20px}.sidebar-card ul{display:flex;flex-wrap:wrap;gap:10px}.sidebar-card li{border-bottom:none;margin-bottom:0;background:var(--light-bg);border:1px solid var(--border-color);border-radius:20px;padding:5px 15px}.productBooks-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:15px}.productBook-section{padding:25px 20px}}@media (max-width:480px){.productBooks-grid{grid-template-columns:1fr}.productBook-hero{padding:40px 15px 25px}.productBook-hero h1{font-size:22px}.productBook-wrapper{padding:0 15px;margin:30px auto}.productBook-section{padding:20px 15px}}.book-buttons{padding:0 15px 15px;margin-top:auto}.preview-btn{width:100%;padding:10px;background-color:var(--primary-blue);color:white;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer;transition:background-color .3s ease}.preview-btn:hover{background-color:rgb(3 27 56)}.pagination{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:40px;flex-wrap:wrap}.page-numbers{display:flex;gap:5px}.pag-btn{padding:8px 14px}.pag-btn,.page{background:#dddddd;border:1px solid var(--border-color);border-radius:4px;cursor:pointer;transition:all .3s}.page{padding:3px 8px}.pag-btn:hover:not(:disabled),.page:hover:not(.active){background:white;border-color:var(--text-medium)}.pag-btn:disabled{opacity:.5;cursor:not-allowed}.page.active{background:var(--primary-blue);color:white;border-color:var(--primary-blue)}