*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8f6f1;--surface:#fff;--border:#e2ddd6;--text:#1a1714;--text-muted:#6b635a;--accent:#c0392b;--accent-light:#fdf0f0;--danger:#c0392b;--loaned:#f5f0e8;--read-badge:#c0392b;--shadow:0 1px 3px #00000014, 0 1px 2px #0000000a;--shadow-md:0 4px 16px #0000001a;--radius:8px;--font-serif:Arial, sans-serif;--font-sans:Arial, sans-serif}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:Arial,sans-serif;font-size:15px;line-height:1.5}.auth-container{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;padding:1rem;display:flex}.auth-card{background:var(--surface);border:1px solid var(--border);width:100%;max-width:380px;box-shadow:var(--shadow-md);text-align:center;border-radius:12px;padding:2.5rem 2rem}.auth-logo{margin-bottom:.5rem;font-size:3rem}.auth-title{color:var(--text);margin-bottom:.25rem;font-family:Arial,sans-serif;font-size:1.75rem}.auth-subtitle{color:var(--text-muted);margin-bottom:2rem;font-size:.9rem}.auth-form{text-align:left}.form-group{margin-bottom:1rem}.form-group label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.4rem;font-size:.85rem;font-weight:500;display:block}.form-group input,.form-group textarea{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:100%;color:var(--text);padding:.65rem .9rem;font-family:Arial,sans-serif;font-size:1rem;transition:border-color .15s}.form-group input:focus,.form-group textarea:focus{border-color:var(--accent);outline:none}.auth-error{border-radius:var(--radius);color:var(--danger);background:#fef0f0;border:1px solid #f5c6c6;margin-bottom:1rem;padding:.65rem .9rem;font-size:.9rem}.auth-sent{padding:1rem 0}.sent-icon{margin-bottom:.75rem;font-size:2.5rem}.auth-sent h2{margin-bottom:.5rem;font-family:Arial,sans-serif}.auth-sent p{color:var(--text-muted);font-size:.95rem}.btn-primary{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;width:100%;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:opacity .15s}.btn-primary:hover{opacity:.9}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{color:var(--text);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;background:0 0;padding:.65rem 1.25rem;font-size:.95rem;transition:background .15s}.btn-secondary:hover{background:var(--bg)}.btn-danger{background:var(--danger);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;padding:.65rem 1.25rem;font-size:.95rem;font-weight:600}.btn-add{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;white-space:nowrap;border:none;padding:.65rem 1.25rem;font-size:.95rem;font-weight:600}.btn-signout{color:var(--text-muted);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;background:0 0;padding:.4rem .9rem;font-size:.85rem}.btn-signout:hover{background:var(--bg)}.btn-icon{cursor:pointer;opacity:.6;background:0 0;border:none;border-radius:4px;padding:.25rem;font-size:1rem;transition:opacity .15s}.btn-icon:hover{opacity:1}.btn-icon.danger:hover{color:var(--danger)}.btn-scan{background:var(--accent-light);width:100%;color:var(--accent);border:1px dashed var(--accent);border-radius:var(--radius);cursor:pointer;margin-bottom:1.25rem;padding:.65rem;font-size:.95rem;font-weight:500}.btn-small{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;padding:.4rem .75rem;font-size:.85rem}.app{max-width:1100px;margin:0 auto;padding:0 1rem 3rem}.app-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:1.25rem;padding:1rem 0;display:flex}.header-left{align-items:center;gap:.6rem;display:flex}.header-logo{font-size:1.5rem}.header-title{font-family:Arial,sans-serif;font-size:1.4rem}.header-right{align-items:center;gap:.75rem;display:flex}.header-user{color:var(--text-muted);font-size:.85rem}.toolbar{flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:1rem;display:flex}.search-input{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);flex:1;min-width:200px;padding:.65rem .9rem;font-size:.95rem}.search-input:focus{border-color:var(--accent);outline:none}.filter-tabs{gap:.25rem;display:flex}.filter-tab{color:var(--text-muted);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;background:0 0;padding:.5rem .9rem;font-size:.85rem;transition:all .15s}.filter-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.filter-tab:hover:not(.active){background:var(--bg)}.books-meta{color:var(--text-muted);margin-bottom:1rem;font-size:.85rem}.books-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;display:grid}.book-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1rem;transition:box-shadow .15s}.book-card:hover{box-shadow:var(--shadow-md)}.book-card.loaned{background:var(--loaned)}.book-card-header{justify-content:space-between;align-items:flex-start;gap:.5rem;margin-bottom:.75rem;display:flex}.book-info{flex:1;min-width:0}.book-title{margin-bottom:.2rem;font-family:Arial,sans-serif;font-size:1rem;font-weight:600;line-height:1.3}.book-author{color:var(--text-muted);font-size:.9rem}.book-year{color:var(--text-muted);font-size:.8rem}.book-actions{flex-shrink:0;gap:.25rem;display:flex}.book-card-footer{flex-direction:column;gap:.5rem;display:flex}.book-notes{color:var(--text-muted);font-size:.85rem;font-style:italic}.badge{border-radius:20px;align-items:center;gap:.4rem;padding:.2rem .6rem;font-size:.8rem;font-weight:500;display:inline-flex}.badge-loaned{color:#856404;background:#fef3cd}.badge-read{background:var(--accent-light);color:var(--accent)}.badge-date{opacity:.8;font-size:.75rem}.readers-badges{flex-wrap:wrap;gap:.35rem;display:flex}.loading{text-align:center;color:var(--text-muted);padding:3rem}.load-more{text-align:center;padding:1.5rem}.modal-overlay{z-index:100;background:#00000073;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal{background:var(--surface);border-radius:12px;width:100%;max-width:560px;max-height:90vh;padding:1.75rem;overflow-y:auto;box-shadow:0 20px 60px #0003}.modal-sm{max-width:380px}.modal-header{justify-content:space-between;align-items:center;margin-bottom:1.5rem;display:flex}.modal-header h2{font-family:Arial,sans-serif;font-size:1.3rem}.modal-close{cursor:pointer;color:var(--text-muted);background:0 0;border:none;padding:.25rem;font-size:1.2rem}.modal-form{flex-direction:column;gap:0;display:flex}.form-row{grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:0;display:grid}.section-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.6rem;font-size:.85rem;font-weight:600;display:block}.readers-section{background:var(--bg);border-radius:var(--radius);margin:1rem 0;padding:1rem}.readers-list{flex-wrap:wrap;gap:.5rem;margin-bottom:.75rem;display:flex}.reader-chip{border:1px solid var(--border);background:var(--surface);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:20px;align-items:center;gap:.4rem;padding:.4rem .75rem;transition:all .15s;display:flex}.reader-chip:hover{border-color:var(--accent)}.reader-chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}.reader-name{font-size:.9rem;font-weight:500}.reader-date{opacity:.85;font-size:.75rem}.reader-check{font-size:.85rem}.reader-custom{gap:.5rem;margin-top:.5rem;display:flex}.reader-custom input{border:1px solid var(--border);border-radius:var(--radius);flex:1;padding:.4rem .75rem;font-size:.9rem}.loan-section{background:var(--bg);border-radius:var(--radius);margin:1rem 0;padding:1rem}.checkbox-label{cursor:pointer;align-items:center;gap:.5rem;margin-bottom:.75rem;font-size:.95rem;display:flex}.checkbox-label input{width:auto}.modal-actions{justify-content:flex-end;gap:.75rem;margin-top:1.5rem;display:flex}.scanner-overlay{z-index:200;background:#000;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.scanner-content{text-align:center;color:#fff;width:100%;max-width:500px;padding:1.5rem}.scanner-content h2{margin-bottom:.5rem;font-family:Arial,sans-serif}.scanner-status{color:#ffffffb3;margin-bottom:1rem;font-size:.9rem}.scanner-video-wrap{max-width:360px;margin:0 auto 1.5rem;position:relative}.scanner-video{border-radius:8px;width:100%}.scanner-crosshair{background:#ffc800cc;width:60%;height:2px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 8px #ffc80080}@media (width<=600px){.toolbar{flex-direction:column;align-items:stretch}.filter-tabs{flex-wrap:wrap}.form-row{grid-template-columns:1fr}.header-user{display:none}.books-grid{grid-template-columns:1fr}}.btn-scan-search{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;white-space:nowrap;padding:.65rem .9rem;font-size:1.1rem;transition:background .15s}.btn-scan-search:hover{background:var(--bg)}.scanner-buttons{flex-direction:column;gap:.75rem;width:100%;max-width:300px;margin:0 auto;display:flex}.btn-scanner-confirm{color:#fff;cursor:pointer;background:#c0392b;border:none;border-radius:8px;padding:1rem;font-size:1.1rem;font-weight:600}.btn-scanner-confirm:disabled{opacity:.6}.btn-scanner-retry{color:#fff;cursor:pointer;background:#ffffff26;border:1px solid #fff6;border-radius:8px;padding:.75rem;font-size:1rem}.btn-scanner-close{color:#fffc;cursor:pointer;background:#ffffff1a;border:1px solid #ffffff4d;border-radius:8px;padding:.75rem;font-size:.95rem}.scanner-found-overlay{color:#0c0;background:#00c80033;border-radius:8px;justify-content:center;align-items:center;font-size:4rem;display:flex;position:absolute;inset:0}.toolbar-search-row{align-items:center;gap:.5rem;margin-bottom:.5rem;display:flex}.toolbar-search-row .search-input{flex:1}.toolbar-controls-row{flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:.25rem;display:flex}.toolbar-searchsort-row{border-top:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:.4rem;margin-top:.25rem;padding:.5rem 0;display:flex}.sort-group{align-items:center;gap:.4rem;display:flex}.sort-label{color:var(--text-muted);white-space:nowrap;font-size:.82rem}.btn-filter{background:var(--surface);border:1px solid var(--border);cursor:pointer;color:var(--text);border-radius:20px;padding:.35rem .8rem;font-size:.85rem;transition:all .15s}.btn-filter:hover{border-color:var(--accent);color:var(--accent)}.btn-filter.active{background:var(--accent);border-color:var(--accent);color:#fff}.btn-filter:disabled{opacity:.4;cursor:default}.book-view-body{flex-direction:column;gap:.75rem;padding:1rem 0;display:flex}.book-view-row{grid-template-columns:120px 1fr;align-items:baseline;gap:.5rem;display:grid}.book-view-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:.82rem;font-weight:600}.book-view-value{color:var(--text);font-size:.97rem}.book-view-date{color:var(--text-muted);font-size:.85rem}.book-view-notes .book-view-value{color:var(--text-muted);font-style:italic}@media (width<=600px){.toolbar-controls-row{flex-direction:column;align-items:flex-start}.sort-group{flex-wrap:wrap}.book-view-row{grid-template-columns:1fr;gap:.1rem}.book-view-label{margin-bottom:0}}