:root{--navy-950: #0a1628;--navy-900: #0f2342;--navy-800: #183663;--navy-700: #1e4680;--accent-600: #2563eb;--accent-500: #3b82f6;--accent-100: #dbeafe;--bg-app: #f1f5f9;--bg-surface: #ffffff;--bg-muted: #f8fafc;--border-color: #cbd5e1;--border-light: #e2e8f0;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--danger-600: #dc2626;--danger-100: #fee2e2;--success-600: #16a34a;--warning-600: #d97706;--header-height: 60px;--sidebar-width: 245px;--properties-width: 280px;--radius-sm: 6px;--radius-md: 8px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .08);--shadow-md: 0 6px 20px rgba(15, 23, 42, .14)}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;font-size:14px;color:var(--text-primary);background-color:var(--bg-app)}.hidden{display:none!important}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}.app-header{min-height:var(--header-height);background:linear-gradient(90deg,var(--navy-950),var(--navy-900));color:#fff;display:flex;align-items:center;justify-content:space-between;padding:8px 16px;border-bottom:1px solid var(--navy-800);gap:12px;flex-wrap:wrap}.logo{display:flex;align-items:center;gap:10px;min-width:0}.logo-badge{background:var(--accent-600);color:#fff;font-weight:700;font-size:12px;padding:6px 8px;border-radius:var(--radius-sm);letter-spacing:.04em;flex-shrink:0}.logo h1{margin:0;font-size:16px;font-weight:600;line-height:1.2;white-space:nowrap}.doc-status-badge{display:block;font-size:11px;color:#cbd5e1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:260px}.doc-status-badge.dirty{color:#fde68a}.header-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.action-btn{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-sm);padding:7px 12px;font-size:13px;font-weight:500;cursor:pointer;transition:background .15s ease,opacity .15s ease}.action-btn:hover:not(:disabled){background:#fff3}.action-btn.primary-btn{background:var(--accent-600);border-color:var(--accent-500)}.action-btn.primary-btn:hover:not(:disabled){background:var(--accent-500)}.action-btn:disabled{opacity:.45;cursor:not-allowed}.app-container{display:grid;grid-template-columns:var(--sidebar-width) 1fr var(--properties-width);height:calc(100vh - var(--header-height));overflow:hidden}.sidebar{background:var(--bg-surface);display:flex;flex-direction:column;overflow-y:auto}.left-sidebar{border-right:1px solid var(--border-light)}.right-sidebar{border-left:1px solid var(--border-light);padding:14px}.sidebar-section-header,.right-sidebar h2{margin:0;padding:12px 14px;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--navy-900);border-bottom:1px solid var(--border-light)}.right-sidebar h2{padding:0 0 10px;margin-bottom:12px}.sidebar-nav ul{list-style:none;margin:0;padding:8px;display:grid;grid-template-columns:repeat(2,1fr);gap:4px;border-bottom:1px solid var(--border-light)}.nav-item{display:block;text-decoration:none;color:var(--text-secondary);padding:7px 10px;border-radius:var(--radius-sm);font-size:12.5px;font-weight:500;text-align:center;transition:background .15s ease,color .15s ease}.nav-item:hover{background:var(--bg-muted);color:var(--navy-900)}.nav-item.active{background:var(--navy-900);color:#fff}.tool-panel{padding:12px;flex:1;overflow-y:auto}.tool-group{display:none;flex-direction:column;gap:8px}.tool-group.active{display:flex}.panel-hint{margin:0 0 4px;font-size:12px;color:var(--text-muted);line-height:1.4}.tool-btn{width:100%;text-align:left;padding:8px 10px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-surface);color:var(--text-primary);font-size:13px;font-weight:500;cursor:pointer;transition:background .15s ease,border-color .15s ease}.tool-btn:hover:not(:disabled){background:var(--bg-muted);border-color:var(--navy-700)}.tool-btn.active{background:var(--accent-100);border-color:var(--accent-600);color:var(--navy-900);font-weight:600}.tool-btn.danger-btn{color:var(--danger-600);border-color:#fecaca}.tool-btn.danger-btn:hover:not(:disabled){background:var(--danger-100)}.tool-btn:disabled{opacity:.45;cursor:not-allowed}.info-note{background:var(--bg-muted);border:1px solid var(--border-light);border-radius:var(--radius-sm);padding:10px;font-size:12px;color:var(--text-secondary)}.info-note ul{margin:6px 0 0;padding-left:16px}.info-note li{margin-bottom:4px}.main-workspace{display:flex;flex-direction:column;min-width:0;overflow:hidden;background:var(--bg-app)}.workspace-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:8px 14px;background:var(--bg-surface);border-bottom:1px solid var(--border-light)}.toolbar-group{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.tb-btn{background:var(--bg-muted);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-sm);padding:5px 10px;font-size:12.5px;font-weight:500;cursor:pointer}.tb-btn:hover:not(:disabled){background:#e2e8f0}.tb-btn.active{background:var(--navy-900);border-color:var(--navy-900);color:#fff}.active-tool-label{font-size:12px;color:var(--text-muted);padding-left:6px}.search-bar{display:flex;align-items:center;gap:6px;padding:8px 14px;background:#eff6ff;border-bottom:1px solid #bfdbfe}.search-bar input{flex:1;max-width:280px;padding:5px 8px;border:1px solid var(--border-color);border-radius:var(--radius-sm)}.search-bar button{padding:5px 9px;border:1px solid var(--border-color);background:#fff;border-radius:var(--radius-sm);cursor:pointer}#search-count{font-size:12px;color:var(--text-secondary);min-width:48px;text-align:center}.upload-area{padding:10px 14px 0}.drop-zone{border:2px dashed var(--border-color);border-radius:var(--radius-md);background:var(--bg-surface);padding:12px 16px;text-align:center;cursor:pointer;transition:border-color .15s ease,background .15s ease}.drop-zone p{margin:0;font-size:13px;color:var(--text-secondary)}.drop-zone .sub-hint{color:var(--text-muted);font-size:12px}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent-600);background:#eff6ff}.pdf-viewer-area{flex:1;display:flex;flex-direction:column;min-height:0;padding:10px 14px 12px;gap:10px}.pdf-viewer{flex:1;overflow:auto;background:#dbe3ee;border:1px solid var(--border-color);border-radius:var(--radius-md);display:flex;justify-content:center;align-items:flex-start;padding:20px;position:relative}.empty-state{margin:auto;text-align:center;max-width:420px;background:var(--bg-surface);padding:28px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.empty-state h3{margin:0 0 8px;color:var(--navy-900)}.empty-state p{margin:0;color:var(--text-secondary);line-height:1.5}.page-stage{position:relative;display:inline-block;box-shadow:var(--shadow-md);background:#fff;line-height:0}#pdf-canvas{display:block}#overlay-canvas{position:absolute;top:0;left:0;cursor:default}.inline-text-editor{position:absolute;z-index:20;border:2px solid var(--accent-600);background:#fffffff0;padding:4px 6px;resize:both;overflow:hidden;line-height:1.25;min-width:120px;min-height:32px}.page-controls{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:8px 12px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.page-nav,.zoom-controls{display:flex;align-items:center;gap:8px}.page-nav button,.zoom-controls button{width:30px;height:30px;border:1px solid var(--border-color);background:var(--bg-muted);border-radius:var(--radius-sm);cursor:pointer;font-weight:600}.page-nav button:disabled,.zoom-controls button:disabled{opacity:.45;cursor:not-allowed}.page-jump-input{width:52px;padding:4px 6px;border:1px solid var(--border-color);border-radius:var(--radius-sm);text-align:center}.thumbnails{display:flex;gap:8px;overflow-x:auto;padding:4px 2px;max-width:100%;flex:1}.thumbnail-item{display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px;border:2px solid var(--border-light);border-radius:var(--radius-sm);background:var(--bg-surface);cursor:pointer;flex-shrink:0;transition:border-color .15s ease,background .15s ease;user-select:none}.thumbnail-item:hover{border-color:var(--accent-500)}.thumbnail-item.active{border-color:var(--navy-900);background:var(--accent-100)}.thumbnail-item.drag-target{border-style:dashed;border-color:var(--accent-600)}.thumbnail-item canvas{display:block;max-width:72px;height:auto;border:1px solid var(--border-light);background:#fff}.thumbnail-item span{font-size:11px;font-weight:600;color:var(--text-secondary)}.properties-panel{display:flex;flex-direction:column;gap:14px}.selection-status{padding:8px 10px;background:var(--bg-muted);border:1px solid var(--border-light);border-radius:var(--radius-sm);font-size:12px;color:var(--text-secondary)}.property-group{display:flex;flex-direction:column;gap:6px;padding-bottom:12px;border-bottom:1px solid var(--border-light)}.property-group h3{margin:0 0 2px;font-size:12.5px;color:var(--navy-900)}.property-group label{font-size:12px;color:var(--text-secondary);font-weight:500}.property-group input[type=text],.property-group input[type=number],.property-group select{width:100%;padding:6px 8px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:13px}.property-group input[type=color]{width:44px;height:30px;padding:2px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:#fff;cursor:pointer}.inline-checks,.fill-row{display:flex;align-items:center;gap:12px}.inline-checks label,.fill-row label{display:flex;align-items:center;gap:5px;cursor:pointer}.loading-overlay{position:fixed;inset:0;background:#0a16288c;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:1000;color:#fff;gap:12px}.spinner{width:38px;height:38px;border:4px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast-container{position:fixed;bottom:18px;right:18px;display:flex;flex-direction:column;gap:8px;z-index:1100;max-width:360px}.toast{padding:10px 14px;border-radius:var(--radius-md);color:#fff;font-size:13px;box-shadow:var(--shadow-md);background:var(--navy-900);animation:fadeIn .2s ease}.toast[data-type=success]{background:var(--success-600)}.toast[data-type=error]{background:var(--danger-600)}.toast[data-type=warning]{background:var(--warning-600)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.modal-backdrop{position:fixed;inset:0;background:#0a162899;display:flex;align-items:center;justify-content:center;z-index:1050;padding:16px}.modal-card{background:var(--bg-surface);border-radius:var(--radius-md);width:100%;max-width:480px;box-shadow:var(--shadow-md);overflow:hidden;display:flex;flex-direction:column}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--navy-900);color:#fff}.modal-header h3{margin:0;font-size:15px}.modal-close-btn{background:none;border:none;color:#fff;font-size:20px;cursor:pointer;line-height:1}.modal-body{padding:16px;font-size:13.5px;color:var(--text-primary);max-height:65vh;overflow-y:auto}.modal-body label{display:block;margin:8px 0 4px;font-weight:500}.modal-body input[type=text],.modal-body input[type=password],.modal-body select{width:100%;padding:8px;border:1px solid var(--border-color);border-radius:var(--radius-sm)}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:12px 16px;background:var(--bg-muted);border-top:1px solid var(--border-light)}.modal-btn{padding:7px 14px;border-radius:var(--radius-sm);border:1px solid var(--border-color);background:#fff;cursor:pointer;font-weight:500}.modal-btn.primary{background:var(--navy-900);border-color:var(--navy-900);color:#fff}.signature-pad-canvas{width:100%;height:180px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:#fff;cursor:crosshair;touch-action:none}.meta-table{width:100%;border-collapse:collapse;font-size:13px}.meta-table td{padding:6px 8px;border-bottom:1px solid var(--border-light)}.meta-table td:first-child{font-weight:600;color:var(--text-secondary);width:38%}@media (max-width: 1024px){.app-container{grid-template-columns:210px 1fr;grid-template-rows:1fr auto;height:auto;min-height:calc(100vh - var(--header-height));overflow:visible}.right-sidebar{grid-column:1 / -1;border-left:none;border-top:1px solid var(--border-light)}}@media (max-width: 768px){.app-container{grid-template-columns:1fr;grid-template-rows:auto}.left-sidebar{border-right:none;border-bottom:1px solid var(--border-light)}.sidebar-nav ul{grid-template-columns:repeat(4,1fr)}.pdf-viewer{min-height:55vh;padding:10px}}