.book-shelf{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;margin:2rem 0}.book{border:1px solid #e1e5e9;border-radius:8px;padding:1rem;background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.1);transition:transform .2s ease-in-out}.book:hover{transform:translateY(-2px);box-shadow:0 4px 8px rgba(0,0,0,.15)}.book-cover{margin:0 0 1rem;text-align:center}.book-cover img{max-width:150px;height:auto;border-radius:4px}.book-info h3{margin:0 0 .5rem;font-size:1.1rem;line-height:1.3}.book-info h3 a{color:#333;text-decoration:none}.book-info h3 a:hover{color:#007acc;text-decoration:underline}.book-author{margin:0;color:#666;font-style:italic}.no-books-message{text-align:center;padding:2rem;color:#666;font-style:italic}[data-theme=dark] .book{background:#2d3748;border-color:#4a5568;color:#e2e8f0}[data-theme=dark] .book-info h3 a{color:#e2e8f0}[data-theme=dark] .book-info h3 a:hover{color:#63b3ed}[data-theme=dark] .book-author{color:#a0aec0}[data-theme=dark] .no-books-message{color:#a0aec0}