:root{--bg-app: #1f2937;--bg-toolbar: #111827;--bg-sidebar: #1a2230;--bg-page: #ffffff;--bg-page-shadow: rgba(0, 0, 0, .45);--fg: #e5e7eb;--fg-muted: #9ca3af;--accent: #3b82f6;--accent-strong: #2563eb;--border: #374151;--error: #ef4444;--danger: #dc2626;--sidebar-width: 240px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;font-family:Segoe UI,Malgun Gothic,Noto Sans KR,sans-serif;font-size:13px;color:var(--fg);background:var(--bg-app);overflow:hidden}button{font-family:inherit;font-size:inherit;cursor:pointer}button:disabled{cursor:not-allowed;opacity:.4}kbd{background:#ffffff14;border:1px solid var(--border);border-radius:3px;padding:1px 6px;font-family:Consolas,monospace;font-size:12px}.app{display:flex;flex-direction:column;height:100%}.app-body{flex:1;display:flex;min-height:0}.toolbar{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--bg-toolbar);border-bottom:1px solid var(--border);flex-shrink:0}.tb-btn,.tb-btn-icon,.tb-btn-toggle{background:transparent;border:1px solid var(--border);color:var(--fg);padding:6px 10px;border-radius:4px;transition:background .15s,border-color .15s}.tb-btn:hover:not(:disabled),.tb-btn-icon:hover:not(:disabled),.tb-btn-toggle:hover:not(:disabled){background:#ffffff0f}.tb-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.tb-btn.primary:hover:not(:disabled){background:var(--accent-strong)}.tb-btn-toggle.active{background:var(--accent);border-color:var(--accent);color:#fff}.tb-btn-icon{padding:6px 9px;min-width:32px;text-align:center}.tb-divider{width:1px;height:22px;background:var(--border);margin:0 4px}.tb-spacer{flex:1}.tb-filename{color:var(--fg-muted);font-size:12px;margin-right:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:280px}.brand-badge{font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--fg);padding:0 4px;background:linear-gradient(135deg,#60a5fa,#3b82f6,#2563eb);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;-webkit-user-select:none;user-select:none}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.save-toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:10px;padding:12px 16px 12px 14px;border-radius:10px;font-size:13px;font-weight:500;background:#111827f2;border:1px solid var(--border);box-shadow:0 12px 36px #0000008c;color:var(--fg);z-index:1100;max-width:90vw;animation:toastIn .22s ease-out}.save-toast.ok{border-color:#22c55e;box-shadow:0 12px 36px #22c55e40}.save-toast.err{border-color:var(--error);box-shadow:0 12px 36px #ef44444d}.save-toast-icon{width:22px;height:22px;display:grid;place-items:center;border-radius:50%;font-size:12px;font-weight:700;flex-shrink:0}.save-toast.ok .save-toast-icon{background:#22c55e;color:#052e16}.save-toast.err .save-toast-icon{background:var(--error);color:#fff}.save-toast-msg{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.save-toast-close{background:transparent;border:none;color:var(--fg-muted);font-size:13px;padding:2px 6px;border-radius:4px;margin-left:4px}.save-toast-close:hover{background:#ffffff14;color:var(--fg)}@keyframes toastIn{0%{opacity:0;transform:translate(-50%,16px)}to{opacity:1;transform:translate(-50%)}}.page-nav{display:flex;align-items:center;gap:4px}.page-nav-input{width:50px;text-align:center;background:transparent;border:1px solid var(--border);color:var(--fg);padding:4px 6px;border-radius:4px;font-family:inherit}.page-nav-input:focus{outline:none;border-color:var(--accent)}.page-nav-total{color:var(--fg-muted);padding:0 4px}.zoom-control{display:flex;align-items:center;gap:4px}.zoom-pct{min-width:56px;text-align:center;color:var(--fg-muted);cursor:pointer;padding:4px 8px;border-radius:4px;-webkit-user-select:none;user-select:none;border:1px solid transparent}.zoom-pct.active{color:var(--fg);background:#ffffff0f;border-color:var(--border)}.sidebar{width:var(--sidebar-width);background:var(--bg-sidebar);border-right:1px solid var(--border);flex-shrink:0;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px}.sidebar-divider{height:1px;background:var(--border);margin:4px 0}.palette-section-title{display:flex;align-items:center;gap:6px;font-size:11px;font-weight:600;color:var(--fg-muted);letter-spacing:.04em;text-transform:uppercase;margin-top:4px;margin-bottom:6px}.palette-section-title .add-stamp-btn{margin-left:auto}.palette-section-hint{font-size:10px;font-weight:500;color:var(--fg-muted);letter-spacing:0;text-transform:none;background:#ffffff0f;border:1px solid var(--border);border-radius:3px;padding:1px 5px;font-family:Consolas,monospace;opacity:.85}.tool-palette{display:flex;flex-direction:column}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}.tool-btn{position:relative;background:transparent;border:1px solid var(--border);color:var(--fg);padding:8px 4px;border-radius:4px;display:flex;flex-direction:column;align-items:center;gap:4px;font-size:11px;transition:background .15s,border-color .15s}.tool-btn:hover:not(:disabled){background:#ffffff0d}.tool-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.tool-icon{font-size:18px;font-weight:700;line-height:1}.tool-label{font-size:11px}.kbd-badge{position:absolute;top:2px;right:3px;font-family:Consolas,monospace;font-size:9px;font-weight:600;line-height:1;letter-spacing:0;color:var(--fg-muted);background:#0006;border:1px solid var(--border);border-radius:2px;padding:2px 4px;pointer-events:none;-webkit-user-select:none;user-select:none}.tool-btn.active .kbd-badge{color:#fff;background:#00000059;border-color:#ffffff59}.stamp-kbd-badge{top:4px;left:4px;right:auto;z-index:1;background:#111827d9;color:#f3f4f6;font-size:9px;padding:2px 5px}.color-row{display:flex;gap:4px;align-items:center;flex-wrap:wrap}.color-swatch{width:24px;height:24px;border:2px solid transparent;border-radius:4px;cursor:pointer;padding:0}.color-swatch.active{border-color:#fff;box-shadow:0 0 0 1px var(--accent)}.color-picker{width:28px;height:28px;background:transparent;border:1px solid var(--border);border-radius:4px;cursor:pointer;padding:2px}.size-row{display:flex;flex-direction:column;gap:10px}.size-label{display:grid;grid-template-columns:50px 1fr auto;align-items:center;gap:6px;font-size:11px;color:var(--fg-muted)}.size-name{white-space:nowrap}.size-label input[type=range]{width:100%;min-width:0}.size-stepper{display:inline-flex;align-items:stretch;border:1px solid var(--border);border-radius:3px;overflow:hidden;background:var(--bg-app)}.size-step-btn{background:#ffffff0a;border:none;color:var(--fg);width:20px;font-size:13px;font-weight:600;line-height:1;padding:0;display:flex;align-items:center;justify-content:center;transition:background .12s}.size-step-btn:hover:not(:disabled){background:var(--accent);color:#fff}.size-step-btn:disabled{opacity:.35;cursor:not-allowed}.size-stepper .size-input{width:36px;border:none;border-left:1px solid var(--border);border-right:1px solid var(--border);border-radius:0;background:transparent}.size-input{width:100%;background:var(--bg-app);border:1px solid var(--border);color:var(--fg);padding:3px 4px;border-radius:3px;font-family:inherit;font-size:11px;text-align:center;font-variant-numeric:tabular-nums}.size-input:focus{outline:none;border-color:var(--accent)}.size-input::-webkit-inner-spin-button,.size-input::-webkit-outer-spin-button{-webkit-appearance:none;-moz-appearance:none;appearance:none;margin:0}.add-stamp-btn{background:var(--accent);border:none;color:#fff;font-size:11px;padding:3px 8px;border-radius:4px;text-transform:none;letter-spacing:0}.add-stamp-btn:hover{background:var(--accent-strong)}.stamp-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.stamp-empty{grid-column:1 / -1;text-align:center;color:var(--fg-muted);padding:16px 8px;font-size:11px}.stamp-item{position:relative;border:2px solid var(--border);border-radius:4px;padding:4px;cursor:pointer;background:#ffffff08;transition:border-color .15s}.stamp-item:hover{border-color:var(--fg-muted)}.stamp-item.active{border-color:var(--accent);background:#3b82f61f}.stamp-thumb{width:100%;height:60px;display:grid;place-items:center;background:#fff;border-radius:2px;margin-bottom:4px;overflow:hidden}.stamp-thumb img{max-width:100%;max-height:100%;object-fit:contain}.stamp-thumb-placeholder{color:#9ca3af}.stamp-name{font-size:11px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--fg)}.stamp-rename-input{width:100%;background:var(--bg-app);border:1px solid var(--accent);color:var(--fg);font-size:11px;padding:2px 4px;border-radius:2px;font-family:inherit}.stamp-actions{position:absolute;top:2px;right:2px;display:flex;gap:2px;opacity:0;transition:opacity .15s}.stamp-item:hover .stamp-actions{opacity:1}.stamp-action-btn{background:#0009;border:none;color:#fff;width:18px;height:18px;border-radius:3px;font-size:10px;display:grid;place-items:center;padding:0}.stamp-action-btn:hover{background:#000000d9}.stamp-action-btn.danger:hover{background:var(--danger)}.link-btn{background:none;border:none;color:var(--accent);text-decoration:underline;padding:4px;margin-top:4px}.viewer{flex:1;overflow:auto;background:var(--bg-app);position:relative}.viewer.single-page{display:flex;align-items:center;justify-content:center;padding:12px}.page-view{position:relative;background:var(--bg-page);box-shadow:0 6px 24px var(--bg-page-shadow);flex-shrink:0}.page-view canvas{display:block}.page-view .pdf-layer,.page-view .fabric-layer{position:absolute;left:0;top:0}.page-view .canvas-container{position:absolute!important;left:0;top:0}.page-view .text-layer{position:absolute;left:0;top:0;overflow:hidden;line-height:1;pointer-events:none;user-select:text;-webkit-user-select:text;z-index:2}.page-view .text-layer span,.page-view .text-layer br{position:absolute;white-space:pre;color:transparent;transform-origin:0% 0%;pointer-events:none}.page-view .text-layer.active span{cursor:text;pointer-events:auto}.page-view .text-layer ::selection{background:#3b82f64d;color:transparent}.page-view .text-layer ::-moz-selection{background:#3b82f64d;color:transparent}.page-view .marquee-overlay{position:absolute;left:0;top:0;right:0;bottom:0;pointer-events:none;z-index:3}.page-view .marquee-overlay.armed{pointer-events:auto;cursor:crosshair}.page-view .marquee-overlay .marquee-box{position:absolute;border:1px dashed rgba(59,130,246,.9);background:#3b82f61f;pointer-events:none}.viewer-pageindicator{position:absolute;bottom:16px;left:50%;transform:translate(-50%);background:#000000a6;color:#fff;padding:5px 14px;border-radius:16px;font-size:12px;font-variant-numeric:tabular-nums;pointer-events:none;-webkit-user-select:none;user-select:none}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--fg-muted);padding:48px 24px}.brand-mark{font-size:64px;line-height:1;margin-bottom:16px;filter:drop-shadow(0 4px 12px rgba(59,130,246,.3))}.brand-title{color:var(--fg);margin:0 0 12px;font-size:38px;font-weight:700;letter-spacing:.02em;background:linear-gradient(135deg,#60a5fa,#3b82f6,#2563eb);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.brand-tagline{font-size:14px;max-width:460px;margin-bottom:28px;color:var(--fg-muted);line-height:1.5}.empty-actions{display:flex;gap:12px;margin-bottom:18px}.empty-cta{background:var(--accent);border:none;color:#fff;padding:14px 28px;font-size:15px;font-weight:500;border-radius:8px;transition:background .15s,transform .15s,box-shadow .15s;box-shadow:0 4px 12px #3b82f64d}.empty-cta:hover{background:var(--accent-strong);transform:translateY(-1px);box-shadow:0 6px 16px #3b82f666}.empty-cta:active{transform:translateY(0)}.empty-cta.secondary{background:transparent;color:var(--fg);border:1px solid var(--border);box-shadow:none}.empty-cta.secondary:hover{background:#ffffff0f;border-color:var(--accent);transform:translateY(-1px);box-shadow:0 4px 12px #0000004d}.empty-hint{font-size:12px;color:var(--fg-muted);margin:0}.empty-hint kbd{margin:0 2px}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;max-width:820px;width:100%;margin-top:36px}.feature-card{background:#ffffff08;border:1px solid var(--border);border-radius:10px;padding:16px 14px;text-align:left;transition:border-color .18s,transform .18s,background .18s}.feature-card:hover{border-color:var(--accent);background:#3b82f60f;transform:translateY(-2px)}.feature-icon{font-size:22px;line-height:1;margin-bottom:8px}.feature-title{font-size:13px;font-weight:600;color:var(--fg);margin-bottom:4px}.feature-desc{font-size:12px;color:var(--fg-muted);line-height:1.45}.feature-card kbd{font-size:11px;padding:0 4px}.help-modal{width:640px}.help-body{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px 24px;padding:20px}.help-section-title{font-size:11px;font-weight:600;color:var(--fg-muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:8px;padding-bottom:4px;border-bottom:1px solid var(--border)}.help-table{width:100%;border-collapse:collapse;font-size:12px}.help-table td{padding:4px 0;vertical-align:top}.help-keys{white-space:nowrap;padding-right:12px!important;color:var(--fg)}.help-keys kbd{font-size:10px;padding:1px 5px}.help-plus{color:var(--fg-muted);margin:0 3px;font-size:10px}.help-desc{color:var(--fg-muted);width:100%}.help-hint{flex:1;font-size:11px;color:var(--fg-muted)}.help-hint kbd{margin:0 2px}.error-banner{background:#ef444426;border-bottom:1px solid var(--error);color:var(--error);padding:8px 16px;font-size:13px;flex-shrink:0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:grid;place-items:center;z-index:1000}.modal{background:var(--bg-toolbar);border:1px solid var(--border);border-radius:8px;width:460px;max-width:90vw;max-height:90vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 12px 40px #00000080}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.modal-header h3{margin:0;font-size:15px;font-weight:600}.modal-close{background:transparent;border:none;color:var(--fg-muted);font-size:16px;padding:4px 8px;border-radius:4px}.modal-close:hover{background:#ffffff14;color:var(--fg)}.modal-body{padding:16px;flex:1;overflow-y:auto}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:12px 16px;border-top:1px solid var(--border)}.form-row{margin-bottom:14px}.form-row>label{display:block;font-size:12px;color:var(--fg-muted);margin-bottom:6px}.form-row input[type=text]{width:100%;background:var(--bg-app);border:1px solid var(--border);color:var(--fg);padding:7px 10px;border-radius:4px;font-family:inherit;font-size:13px}.form-row input[type=text]:focus{outline:none;border-color:var(--accent)}.checkbox-label{display:flex!important;align-items:center;gap:8px;margin-bottom:0!important;cursor:pointer}.stamp-preview{background:#fff;border:1px solid var(--border);border-radius:4px;padding:10px;display:grid;place-items:center;min-height:100px}.stamp-preview img{max-width:200px;max-height:150px;object-fit:contain}.form-error{color:var(--error);font-size:12px;background:#ef44441f;padding:8px 10px;border-radius:4px;margin-top:8px}.tab-bar{display:flex;align-items:stretch;gap:2px;padding:4px 8px 0;background:var(--bg-app);border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:thin;position:relative;flex:0 0 auto}.tab{display:inline-flex;align-items:center;gap:8px;padding:8px 10px 8px 12px;max-width:240px;background:var(--bg-toolbar);color:var(--fg-muted);border-radius:6px 6px 0 0;cursor:pointer;border-top:2px solid transparent;-webkit-user-select:none;user-select:none;font-size:13px;white-space:nowrap}.tab:hover{color:var(--fg)}.tab.active{background:var(--bg-sidebar);color:var(--fg);border-top-color:var(--accent)}.tab.drag-l{box-shadow:inset 3px 0 0 var(--accent)}.tab.drag-r{box-shadow:inset -3px 0 0 var(--accent)}.tab-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}.tab-close{border:none;background:transparent;color:inherit;padding:2px 5px;border-radius:3px;cursor:pointer;opacity:.5;font-size:12px;line-height:1}.tab-close:hover{background:#ffffff1a;opacity:1}.tab.active .tab-close{opacity:1}.tab-add{border:none;background:transparent;color:var(--fg-muted);padding:4px 14px;cursor:pointer;font-size:18px;align-self:center}.tab-add:hover{color:var(--fg);background:#ffffff0f;border-radius:4px}.tab-menu{position:fixed;z-index:1000;background:var(--bg-toolbar);border:1px solid var(--border);border-radius:6px;padding:4px;display:flex;flex-direction:column;min-width:160px;box-shadow:0 8px 24px #0006}.tab-menu button{text-align:left;padding:7px 12px;background:transparent;color:var(--fg);border:none;border-radius:4px;cursor:pointer;font-size:13px}.tab-menu button:hover{background:#ffffff14}