:root{--bg:#f6f7f9;--panel:#fff;--border:#dde1e6;--text:#1f2933;--muted:#6b7280;--accent:#2f6fdb;--accent-soft:#e8f0fd;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;margin:0;overflow:hidden}button{font:inherit;color:inherit}#app{grid-template-rows:auto 1fr auto;grid-template-columns:minmax(0,1fr);height:100vh;display:grid}.topbar{background:var(--panel);border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:6px 10px;display:flex;overflow-x:auto}.brand{letter-spacing:.02em;margin-right:4px;font-weight:700}.topbar button,.statusbar button{cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;border-radius:6px;padding:4px 8px}.topbar button:hover:not(:disabled),.statusbar button:hover:not(:disabled){background:var(--bg);border-color:var(--border)}button:disabled{opacity:.35;cursor:default}.filemenu{gap:2px;display:flex}.toolbar{border:1px solid var(--border);border-radius:8px;gap:2px;margin:0 auto;padding:2px;display:flex}.toolbar button{align-items:center;gap:5px;font-size:16px;display:flex}.toolbar button span{color:var(--muted);font-size:12px}.toolbar button.active{background:var(--accent-soft);border-color:var(--accent)}.toolbar button.active span{color:var(--accent)}.history button{font-size:18px}.workspace{grid-template-columns:1fr 290px;min-height:0;display:grid}#canvas{cursor:crosshair;touch-action:none;-webkit-user-select:none;user-select:none;background:#fff;position:relative;overflow:hidden}#canvas[data-tool=select]{cursor:default}#canvas[data-tool=pan],#canvas.panning{cursor:grab}#canvas svg{display:block;position:absolute;inset:0}#canvas .editable{cursor:text}#canvas [data-kind=handle]{cursor:move}#canvas [data-kind=side]{cursor:grab}#properties{border-left:1px solid var(--border);background:var(--panel);overflow-y:auto}.drawing-area{grid-template-rows:auto 1fr;min-width:0;min-height:0;display:grid}.sheet-tabs{background:var(--bg);border-bottom:1px solid var(--border);align-items:flex-end;gap:2px;padding:4px 8px 0;display:flex;overflow-x:auto}.sheet-tab{white-space:nowrap;border:1px solid var(--border);background:var(--bg);color:var(--muted);cursor:pointer;-webkit-user-select:none;user-select:none;border-bottom:0;border-radius:6px 6px 0 0;flex:none;align-items:center;gap:4px;padding:4px 6px 4px 12px;display:flex}.sheet-tab .sheet-name{text-overflow:ellipsis;max-width:200px;overflow:hidden}.sheet-tab:hover{color:var(--text)}.sheet-tab.active{color:var(--text);background:#fff;margin-bottom:-1px;padding-bottom:5px;font-weight:600}.sheet-tab .sheet-remove{width:18px;height:18px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:4px;padding:0;line-height:16px}.sheet-tab .sheet-remove:hover{background:var(--accent-soft);color:var(--text)}.sheet-tab input{width:120px;font:inherit;border:1px solid var(--accent);border-radius:3px;padding:0 4px}.sheet-add{width:26px;height:24px;color:var(--muted);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:6px;align-self:center;margin-left:4px;padding:0;font-size:16px}.sheet-add:hover{border-color:var(--border);color:var(--text);background:#fff}.inline-editor{z-index:10;text-align:center;width:110px;color:var(--text);border:2px solid var(--accent);background:#fff;border-radius:5px;outline:none;padding:3px 6px;font:600 13px system-ui,sans-serif;position:absolute;transform:translate(-50%,-50%);box-shadow:0 2px 8px #00000026}.inline-editor.invalid{background:#fef2f2;border-color:#dc2626}.statusbar{background:var(--panel);border-top:1px solid var(--border);color:var(--muted);align-items:center;gap:14px;padding:4px 10px;font-size:12px;display:flex}.zoom{gap:2px;display:flex}#hint{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}#app-version{color:var(--muted);padding:0 4px;font-size:12px}#app-version:hover{color:var(--text)}#status{font-variant-numeric:tabular-nums;white-space:pre}@media (width<=1100px){.toolbar button span{display:none}}@media (width<=900px){.workspace{grid-template-rows:1fr 40%;grid-template-columns:1fr}#properties{border-left:0;border-top:1px solid var(--border)}}#canvas .bbox-handle.h0,#canvas .bbox-handle.h4{cursor:nwse-resize}#canvas .bbox-handle.h2,#canvas .bbox-handle.h6{cursor:nesw-resize}#canvas .bbox-handle.h1,#canvas .bbox-handle.h5{cursor:ns-resize}#canvas .bbox-handle.h3,#canvas .bbox-handle.h7{cursor:ew-resize}.format-dialog{border:1px solid var(--border);width:min(760px,100vw - 32px);max-height:calc(100vh - 32px);color:var(--text);background:var(--panel);border-radius:10px;padding:16px 18px}.format-dialog[open]{flex-direction:column;gap:10px;display:flex}.format-dialog::backdrop{background:#0000004d}.format-dialog h2{margin:0;font-size:16px}.format-dialog p{color:var(--muted);margin:0;font-size:13px;line-height:1.45}.format-dialog textarea{resize:vertical;border:1px solid var(--border);height:50vh;color:var(--text);background:var(--bg);border-radius:6px;padding:8px;font:12px/1.45 ui-monospace,Menlo,monospace}.format-dialog .actions{justify-content:flex-end;align-items:center;gap:6px;display:flex}.format-dialog button{border:1px solid var(--border);background:var(--panel);cursor:pointer;border-radius:6px;padding:5px 12px}.format-dialog button[data-act=copy]{background:var(--accent);border-color:var(--accent);color:#fff}.changelog{font-size:13px;line-height:1.45;overflow:auto}.changelog h3{margin:12px 0 4px;font-size:13px}.changelog ul{margin:0;padding-left:20px}.format-dialog .copied{color:var(--accent);font-size:12px}.print-dialog{border:1px solid var(--border);width:min(380px,100vw - 32px);color:var(--text);background:var(--panel);border-radius:10px;padding:16px 18px}.print-dialog[open]{flex-direction:column;gap:10px;display:flex}.print-dialog::backdrop{background:#0000004d}.print-dialog h2{margin:0;font-size:16px}.print-dialog label{justify-content:space-between;align-items:center;gap:12px;display:flex}.print-dialog select{width:150px;padding:3px 4px}.print-dialog p{color:var(--muted);margin:0;font-size:13px;line-height:1.45}.print-dialog .print-warning{color:#b42318;font-weight:600}.print-dialog .actions{justify-content:flex-end;gap:6px;display:flex}.print-dialog button{border:1px solid var(--border);background:var(--panel);cursor:pointer;border-radius:6px;padding:5px 12px}.print-dialog button[data-act=print]{background:var(--accent);border-color:var(--accent);color:#fff}.print-dialog button:disabled{opacity:.45;cursor:not-allowed}#print-sheet{display:none}@media print{html,body{background:#fff;height:auto;overflow:visible}body.printing>:not(#print-sheet){display:none!important}body.printing #print-sheet,#print-sheet svg{display:block}}.note-editor{z-index:10;filter:drop-shadow(1px 2px 1px #00000024)drop-shadow(3px 5px 4px #0000001a);flex-direction:column;align-items:flex-end;gap:2px;padding:12px;display:flex;position:absolute}.note-editor:before{content:"";z-index:-1;clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%);background:linear-gradient(#fff9c4,#ffee8f);position:absolute;inset:0}.note-editor textarea{resize:none;color:#3a3200;-webkit-user-select:text;user-select:text;background:0 0;border:0;outline:none;min-width:180px;padding:0;font:14px/19px system-ui,-apple-system,Segoe UI,sans-serif}.note-editor textarea::placeholder{color:#3a3200;opacity:.45}.note-editor button{cursor:pointer;color:#3a3200;background:#ffffff8c;border:1px solid #e6d36f;border-radius:10px;margin-right:8px;padding:1px 10px;font-size:12px}.note-editor button:hover{border-color:var(--accent)}textarea.note-text{box-sizing:border-box;resize:vertical;color:#3a3200;background:linear-gradient(#fff9c4,#ffee8f);border:1px solid #e6d36f;border-radius:4px;width:100%;padding:8px 10px;font:14px/19px system-ui,-apple-system,Segoe UI,sans-serif}textarea.note-text:focus{outline:2px solid var(--accent);outline-offset:1px}.properties{background:var(--panel,#f7f7f8);color:var(--text,#1f2328);font:13px/1.4 system-ui,-apple-system,sans-serif;overflow-y:auto}.properties .panel-body{padding:8px 12px 16px}.properties .section{font-variant:small-caps;letter-spacing:.06em;text-transform:lowercase;color:var(--muted,#6b7280);border-bottom:1px solid var(--border,#d8dadf);margin:14px 0 6px;padding-bottom:3px;font-size:11px;font-weight:600}.properties .section:first-child{margin-top:4px}.properties .row{grid-template-columns:38% 1fr;align-items:center;gap:8px;min-height:24px;margin:4px 0;display:grid}.properties .row-label{color:var(--muted,#6b7280);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.properties .value{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.properties input[type=text],.properties input[type=number],.properties select{box-sizing:border-box;width:100%;font:inherit;color:var(--text,#1f2328);background:var(--bg,#fff);border:1px solid var(--border,#d8dadf);border-radius:4px;outline:none;padding:3px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.properties input:focus,.properties select:focus{border-color:var(--accent,#3b82f6);box-shadow:0 0 0 1px var(--accent,#3b82f6)}.properties input.invalid{border-color:#d93025;box-shadow:0 0 0 1px #d93025}.properties .row.check input[type=checkbox]{appearance:none;cursor:pointer;background:#d1d5db;border:none;border-radius:11px;justify-self:start;width:38px;height:22px;margin:0;padding:0;transition:background .2s;position:relative}.properties .row.check input[type=checkbox]:before{content:"";background:#fff;border-radius:50%;width:18px;height:18px;transition:transform .2s;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #0000004d}.properties .row.check input[type=checkbox]:checked{background:var(--accent,#3b82f6)}.properties .row.check input[type=checkbox]:checked:before{transform:translate(16px)}.properties .row.drawing-off .row-label{text-decoration:line-through}.properties .row.drawing-off input[type=checkbox]{opacity:.5}.properties .note{color:var(--muted,#6b7280);margin:6px 0;font-size:12px}.properties button.danger{font:inherit;color:#fff;cursor:pointer;background:#d93025;border:0;border-radius:4px;margin-top:6px;padding:5px 12px}.properties button.danger:hover{background:#b3261e}.properties button.action{font:inherit;color:var(--text,#1f2328);background:var(--bg,#fff);border:1px solid var(--border,#d8dadf);cursor:pointer;border-radius:4px;margin:2px 8px 6px 0;padding:4px 12px}.properties button.action:hover{border-color:var(--accent,#3b82f6)}.properties textarea.note-text{box-sizing:border-box;color:#3b3306;resize:vertical;background:#fff4a3;border:1px solid #e0cb62;border-radius:4px;outline:none;width:100%;padding:6px 8px;font:13px/17px system-ui,-apple-system,sans-serif}.properties textarea.note-text:focus{border-color:var(--accent,#3b82f6);box-shadow:0 0 0 1px var(--accent,#3b82f6)}