:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;color:#ffffffde;background-color:#0f172a;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh;width:100%}body{margin:0;min-width:320px;min-height:100vh}a{font-weight:500;color:#6366f1;text-decoration:inherit}a:hover{color:#818cf8}*{box-sizing:border-box}:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-primary: #6366f1;--accent-hover: #818cf8;--border-color: #475569;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--author-color: #f59e0b;--topic-color: #10b981;--theme-color: #ec4899;--tag-color: #8b5cf6}body{margin:0;background:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:var(--bg-secondary);padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-color)}.header h1{margin:0;font-size:1.5rem;background:linear-gradient(135deg,var(--accent-primary),var(--theme-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-actions{display:flex;gap:.5rem;flex-wrap:wrap}.btn{padding:.5rem 1rem;border:none;border-radius:6px;cursor:pointer;font-size:.875rem;font-weight:500;transition:all .2s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover:not(:disabled){background:var(--border-color)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-small{padding:.25rem .5rem;font-size:.75rem}.auth-page{min-height:100vh;display:flex;justify-content:center;align-items:center;background:var(--bg-primary);padding:1rem}.auth-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:2rem;width:100%;max-width:400px}.auth-title{text-align:center;margin:0 0 .5rem;font-size:2rem;background:linear-gradient(135deg,var(--accent-primary),var(--theme-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-subtitle{text-align:center;color:var(--text-secondary);margin:0 0 2rem;font-size:.875rem}.auth-form{display:flex;flex-direction:column;gap:1rem}.auth-submit{width:100%;padding:.75rem;font-size:1rem;margin-top:.5rem}.auth-error{color:var(--danger);font-size:.875rem;text-align:center;margin:0}.auth-message{color:var(--success);font-size:.875rem;text-align:center;margin:0}.auth-toggle{text-align:center;color:var(--text-secondary);font-size:.875rem;margin-top:1.5rem}.auth-toggle-btn{background:none;border:none;color:var(--accent-primary);cursor:pointer;font-size:.875rem;padding:0}.auth-toggle-btn:hover{color:var(--accent-hover);text-decoration:underline}.loading-screen{flex:1;display:flex;justify-content:center;align-items:center;min-height:200px}.loading-spinner{display:flex;flex-direction:column;align-items:center;gap:1rem}.spinner{width:32px;height:32px;border:3px solid var(--bg-tertiary);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}.loading-spinner.small .spinner{width:16px;height:16px;border-width:2px}.spinner-message{color:var(--text-secondary);font-size:.875rem;margin:0}@keyframes spin{to{transform:rotate(360deg)}}.migration-banner{background:#6366f126;border-bottom:1px solid var(--accent-primary);padding:.75rem 2rem;display:flex;justify-content:space-between;align-items:center;gap:1rem}.migration-banner p{margin:0;font-size:.875rem;color:var(--text-primary)}.migration-actions{display:flex;gap:.5rem;flex-shrink:0}.library-view{flex:1;padding:2rem;max-width:1400px;margin:0 auto;width:100%}.library-toolbar{display:flex;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}.search-input{flex:1;min-width:200px;padding:.5rem 1rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.875rem}.search-input:focus{outline:none;border-color:var(--accent-primary)}.filter-select{padding:.5rem 1rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.875rem}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem}.book-card{background:var(--bg-secondary);border-radius:8px;padding:1rem;border:1px solid var(--border-color);transition:border-color .2s}.book-card:hover{border-color:var(--accent-primary)}.book-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.5rem}.book-card h3{margin:0;font-size:1rem;color:var(--text-primary)}.book-card-actions{display:flex;gap:.25rem;flex-shrink:0}.book-authors{color:var(--author-color);font-size:.875rem;margin-bottom:.5rem}.book-meta{display:flex;gap:1rem;font-size:.75rem;color:var(--text-secondary);margin-bottom:.75rem}.book-attributes{display:flex;flex-wrap:wrap;gap:.25rem}.attribute-badge{padding:.125rem .5rem;border-radius:9999px;font-size:.625rem;font-weight:500}.badge-topic{background:#10b98133;color:var(--topic-color)}.badge-theme{background:#ec489933;color:var(--theme-color)}.badge-tag{background:#8b5cf633;color:var(--tag-color)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;justify-content:center;align-items:center;z-index:1000;padding:1rem}.modal{background:var(--bg-secondary);border-radius:12px;width:100%;max-width:600px;max-height:90vh;overflow-y:auto;border:1px solid var(--border-color)}.modal-header{padding:1rem 1.5rem;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.modal-header h2{margin:0;font-size:1.25rem}.modal-body{padding:1.5rem}.modal-footer{padding:1rem 1.5rem;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:.5rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.25rem;font-size:.875rem;color:var(--text-secondary)}.form-group input,.form-group textarea{width:100%;padding:.5rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.875rem}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent-primary)}.form-group textarea{min-height:80px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-hint{font-size:.75rem;color:var(--text-secondary);margin-top:.25rem}.graph-view{flex:1;display:flex;position:relative}.graph-container{flex:1;background:var(--bg-primary)}.graph-controls{position:absolute;top:1rem;left:1rem;background:var(--bg-secondary);border-radius:8px;padding:1rem;border:1px solid var(--border-color);z-index:100;min-width:220px}.graph-controls h3{margin:0 0 .75rem;font-size:.875rem;color:var(--text-secondary)}.toggle-group{margin-bottom:1rem}.toggle-item{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem;font-size:.875rem;cursor:pointer}.toggle-item input[type=checkbox]{accent-color:var(--accent-primary)}.toggle-item .color-dot{width:10px;height:10px;border-radius:50%}.threshold-control{margin-bottom:1rem}.threshold-control label{display:block;font-size:.75rem;color:var(--text-secondary);margin-bottom:.25rem}.threshold-control input[type=range]{width:100%;accent-color:var(--accent-primary)}.threshold-value{text-align:center;font-size:.75rem;color:var(--text-secondary)}.graph-search{width:100%;padding:.5rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.875rem}.graph-search:focus{outline:none;border-color:var(--accent-primary)}.side-panel{width:350px;background:var(--bg-secondary);border-left:1px solid var(--border-color);padding:1.5rem;overflow-y:auto}.side-panel-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1rem}.side-panel-header h2{margin:0;font-size:1.125rem;word-break:break-word}.close-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:1.5rem;line-height:1;padding:0}.close-btn:hover{color:var(--text-primary)}.node-type-badge{display:inline-block;padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:500;margin-bottom:1rem}.side-panel-section{margin-bottom:1.5rem}.side-panel-section h3{margin:0 0 .5rem;font-size:.875rem;color:var(--text-secondary)}.book-list{display:flex;flex-direction:column;gap:.5rem}.book-list-item{padding:.5rem;background:var(--bg-tertiary);border-radius:6px;font-size:.875rem;cursor:pointer;transition:background .2s}.book-list-item:hover{background:var(--border-color)}.book-list-item .book-authors{font-size:.75rem;margin-bottom:0}.attribute-list{display:flex;flex-wrap:wrap;gap:.5rem}.attribute-chip{padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;cursor:pointer;transition:opacity .2s}.attribute-chip:hover{opacity:.8}.chip-author{background:#f59e0b33;color:var(--author-color)}.chip-topic{background:#10b98133;color:var(--topic-color)}.chip-theme{background:#ec489933;color:var(--theme-color)}.chip-tag{background:#8b5cf633;color:var(--tag-color)}.suggestions-panel{position:fixed;right:0;top:0;bottom:0;width:400px;background:var(--bg-secondary);border-left:1px solid var(--border-color);z-index:500;display:flex;flex-direction:column;overflow-y:auto}.suggestions-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid var(--border-color)}.suggestions-header h2{margin:0;font-size:1.125rem}.suggestions-empty{padding:2rem;text-align:center;color:var(--text-secondary);font-size:.875rem}.suggestions-list{padding:1rem;display:flex;flex-direction:column;gap:.75rem}.suggestion-card{background:var(--bg-tertiary);border-radius:8px;padding:1rem;border:1px dashed var(--border-color)}.suggestion-card-header h3{margin:0 0 .25rem;font-size:.95rem}.suggestion-reason{font-size:.8rem;color:var(--text-secondary);line-height:1.4;margin:.5rem 0}.suggestion-related{font-size:.75rem;color:var(--accent-primary);margin:.25rem 0 .5rem}.suggestion-actions{display:flex;gap:.5rem;margin-top:.5rem}.bulk-import-textarea{width:100%;min-height:200px;padding:.75rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-family:monospace;font-size:.875rem;resize:vertical}.bulk-import-hint{font-size:.75rem;color:var(--text-secondary);margin-top:.5rem}.bulk-import-hint code{background:var(--bg-tertiary);padding:.125rem .25rem;border-radius:3px}.book-search-input{width:100%;padding:.75rem 1rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:1rem;margin-bottom:1rem}.book-search-input:focus{outline:none;border-color:var(--accent-primary)}.book-search-results{display:flex;flex-direction:column;gap:.5rem;min-height:100px;max-height:400px;overflow-y:auto}.book-search-loading{display:flex;justify-content:center;padding:2rem 0}.book-search-result-item{display:flex;align-items:center;gap:.75rem;padding:.5rem;border-radius:6px;background:var(--bg-tertiary);transition:background .2s}.book-search-result-item:hover{background:var(--border-color)}.book-cover-thumb{width:40px;height:56px;object-fit:cover;border-radius:3px;flex-shrink:0;background:var(--bg-primary)}.book-cover-placeholder{border:1px dashed var(--border-color)}.book-search-result-info{flex:1;min-width:0}.book-search-result-title{font-size:.875rem;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-search-result-author{font-size:.75rem;color:var(--author-color)}.book-search-result-year{font-size:.75rem;color:var(--text-secondary)}.no-results{text-align:center;padding:2rem 0;color:var(--text-secondary);font-size:.875rem}.no-results p{margin:0}.book-search-footer{margin-top:1rem;padding-top:.75rem;border-top:1px solid var(--border-color);text-align:center}.book-search-manual-link{background:none;border:none;color:var(--accent-primary);cursor:pointer;font-size:.875rem;padding:0}.book-search-manual-link:hover{color:var(--accent-hover);text-decoration:underline}.empty-state{text-align:center;padding:4rem 2rem;color:var(--text-secondary)}.empty-state h2{color:var(--text-primary);margin-bottom:.5rem}.empty-state p{margin-bottom:1.5rem}.star-rating{color:var(--warning)}.legend{display:flex;gap:1rem;flex-wrap:wrap;margin-top:.5rem;padding-top:.5rem;border-top:1px solid var(--border-color)}.legend-item{display:flex;align-items:center;gap:.25rem;font-size:.625rem;color:var(--text-secondary)}