body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#112d49}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.app{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.app-header{background-color:#0a1a2d;color:#fff;width:100%;margin-bottom:20px}.app-main{display:flex;justify-content:space-between;width:80%;margin:0 auto}.app-left-column{flex:1;flex-basis:35%;display:flex;align-items:center;align-self:flex-start}.app-right-column{flex:1;flex-basis:65%;display:flex;flex-direction:column}.app-block{padding:20px;margin:20px;background-color:#f2f2f2;border-radius:5px;box-shadow:0 2px 4px #0000001a}@media (max-width: 1024px){.app-main{width:100%;flex-direction:column}.app-left-column,.app-right-column{flex-basis:100%;align-self:unset}}.filter-row{display:flex;justify-content:space-between;align-items:center}.filter-group{flex-grow:1}.filter input[type=text]{width:80%;padding:8px;border:1px solid #ccc;border-radius:3px}.filter input[type=checkbox],.filter label[for=only-favorite]{cursor:pointer}.filter button{background-color:#007bff;color:#fff;padding:8px 12px;border:none;border-radius:3px;cursor:pointer;margin:10px;transition:background-color .3s ease}.filter button:hover{background-color:#0056b3}@media screen and (max-width: 1024px){.filter-row{flex-direction:column;align-items:stretch}.filter-group{width:100%;margin:auto auto 10px}.filter button{margin:10px auto 0;max-width:50%}}.book-form{width:100%}.book-form label{display:block;width:100%;text-align:center;margin-bottom:10px}.book-form input{width:80%;padding:8px;margin-bottom:10px;border:1px solid #ccc;border-radius:3px}.book-form button{background-color:#007bff;color:#fff;padding:8px 12px;border:none;border-radius:3px;cursor:pointer;margin:10px;transition:background-color .3s ease}.book-form button:hover{background-color:#0056b3}.book-form button:disabled{background-color:#0056b3;cursor:not-allowed}.book-form button.delete{background-color:#cd5c5c}.book-form button.delete:hover{background-color:brown}.book-form .spinner{animation:spinner 1s infinite linear;margin-left:10px}@keyframes spinner{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.book-list ul{padding:0;margin:20px -20px;list-style:none}.book-list li{display:flex;justify-content:space-between;align-items:center;width:auto;padding:10px 20px;border-bottom:1px solid #ccc;background-color:#fff;list-style-type:none}.book-list li:nth-child(2n){background-color:#f2f2f2}.book-list li:hover{background-color:#dbe4f8}.book-list button{background-color:#fff;color:red;border:1px solid red;padding:8px 12px;border-radius:3px;cursor:pointer;transition:background-color .3s ease}.book-list button:hover{background-color:#fdd}.book-list .highlight{background-color:#ff0}.book-list .book-info{flex:1;text-align:left}.book-list .book-actions{display:flex;align-items:center}.book-list .star-icon{width:24px;height:24px;margin:0 20px;cursor:pointer;transition:color .3s ease;color:#fca510}