:root{--border: #d8dee4;--gridline: #e3e6ea;--header-bg: #f6f8fa;--header-hover: #e9edf1;--header-text: #57606a;--text: #1f2328;--muted: #6e7781;--accent: #1a73e8;--accent-dark: #1664cc;--selection-bg: rgba(26, 115, 232, .12);--fill-tint: rgba(26, 115, 232, .08);--danger: #cf222e;--header-w: 46px;--header-h: 26px;--font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font-ui);font-size:13px;color:var(--text);background:#fff;-webkit-font-smoothing:antialiased;overflow:hidden}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-header{display:flex;align-items:center;padding:0 10px;height:32px;border-bottom:1px solid var(--border);background:#fff;-webkit-user-select:none;user-select:none}.app-title{font-weight:700;font-size:14px;letter-spacing:.2px;color:var(--accent)}.app-title:after{content:"Spreadsheet";margin-left:8px;font-weight:400;font-size:12px;color:var(--muted)}.toolbar{display:flex;align-items:center;gap:2px;padding:4px 8px;border-bottom:1px solid var(--border);background:#fff;-webkit-user-select:none;user-select:none;flex-wrap:wrap}.tool-button{display:inline-flex;align-items:center;justify-content:center;min-width:28px;height:26px;padding:0 6px;border:1px solid transparent;border-radius:5px;background:transparent;color:var(--text);font:inherit;font-size:13px;cursor:pointer;transition:background .12s ease,border-color .12s ease}.tool-button:hover:not(:disabled){background:var(--header-bg);border-color:var(--border)}.tool-button:active:not(:disabled){background:var(--header-hover)}.tool-button.active{background:var(--selection-bg);border-color:#1a73e859;color:var(--accent-dark)}.tool-button:disabled{opacity:.4;cursor:default}.toolbar-sep{width:1px;height:20px;margin:0 5px;background:var(--border)}.toolbar-spacer{flex:1}.color-field{position:relative;display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;cursor:pointer;border-radius:5px}.color-field:hover{background:var(--header-bg)}.color-field input[type=color]{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer;border:none;padding:0}.color-swatch{font-weight:700;font-size:13px;pointer-events:none;border-bottom:2px solid currentColor;line-height:1.1}.fill-swatch{font-weight:700;font-size:13px;pointer-events:none;width:16px;height:16px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:3px}.numfmt-select{height:26px;border:1px solid var(--border);border-radius:5px;background:#fff;font:inherit;padding:0 6px;cursor:pointer}.numfmt-select:focus{outline:2px solid rgba(26,115,232,.4)}.decimals-field input{width:44px;height:26px;border:1px solid var(--border);border-radius:5px;font:inherit;text-align:center;padding:0 4px}.decimals-field input:focus{outline:2px solid rgba(26,115,232,.4)}.formula-bar{display:flex;align-items:center;gap:6px;padding:4px 8px;border-bottom:1px solid var(--border);background:#fff;-webkit-user-select:none;user-select:none}.name-box{width:56px;height:26px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:5px;font-weight:600;color:var(--header-text);background:var(--header-bg);flex:none}.fx-label{font-style:italic;font-weight:600;color:var(--accent);flex:none;font-size:12px}.formula-input{flex:1;height:26px;border:1px solid var(--border);border-radius:5px;font:inherit;padding:0 8px;background:#fff}.formula-input:focus{outline:2px solid rgba(26,115,232,.4);border-color:var(--accent)}.grid-container{position:relative;flex:1;overflow:hidden;background:#fff}.corner{position:absolute;top:0;left:0;z-index:6;background:var(--header-bg);border-right:1px solid var(--border);border-bottom:1px solid var(--border);cursor:pointer}.corner:hover{background:var(--header-hover)}.col-headers,.row-headers{position:absolute;z-index:5;background:var(--header-bg);overflow:hidden;pointer-events:none}.col-headers{top:0;right:0;height:var(--header-h);border-bottom:1px solid var(--border)}.row-headers{top:0;bottom:0;left:0;width:var(--header-w);border-right:1px solid var(--border)}.col-header{position:absolute;top:0;height:100%;display:flex;align-items:center;justify-content:center;color:var(--header-text);font-weight:600;font-size:12px;border-right:1px solid var(--border);cursor:default;pointer-events:auto;-webkit-user-select:none;user-select:none}.col-header:hover{background:var(--header-hover);color:var(--text)}.row-header{position:absolute;left:0;width:100%;display:flex;align-items:center;justify-content:flex-end;padding-right:6px;color:var(--header-text);font-size:12px;border-bottom:1px solid var(--border);cursor:default;pointer-events:auto;-webkit-user-select:none;user-select:none}.row-header:hover{background:var(--header-hover);color:var(--text)}.col-resize{position:absolute;top:0;right:-3px;width:7px;height:100%;cursor:col-resize;pointer-events:auto}.col-resize:hover{background:var(--accent)}.row-resize{position:absolute;bottom:-3px;left:0;width:100%;height:7px;cursor:row-resize;pointer-events:auto}.row-resize:hover{background:var(--accent)}.grid-scroll{position:absolute;top:0;right:0;bottom:0;left:0;overflow:auto}.grid-scroll::-webkit-scrollbar{width:12px;height:12px}.grid-scroll::-webkit-scrollbar-thumb{background:#c9d1d9;border-radius:6px;border:3px solid #fff}.grid-scroll::-webkit-scrollbar-thumb:hover{background:#afb8c1}.grid-scroll::-webkit-scrollbar-corner{background:#f6f8fa}.grid-phantom{position:relative}.grid-layer{position:absolute;top:0;left:0;will-change:transform}.cell{position:absolute;overflow:hidden;white-space:nowrap;text-overflow:clip;border-right:1px solid var(--gridline);border-bottom:1px solid var(--gridline);padding:0 4px;display:flex;align-items:center;background:#fff;-webkit-user-select:none;user-select:none;cursor:cell}.cell.selected{background:var(--selection-bg)}.cell.active{box-shadow:inset 0 0 0 2px var(--accent);z-index:2}.selection-outline{position:absolute;border:2px solid var(--accent);pointer-events:none;z-index:3}.fill-handle{position:absolute;width:8px;height:8px;background:var(--accent);border:1px solid #fff;cursor:crosshair;z-index:4}.fill-ghost{position:absolute;border:1px dashed var(--accent);background:var(--fill-tint);pointer-events:none;z-index:3}.cell-editor{position:absolute;z-index:10;border:2px solid var(--accent);border-radius:0;background:#fff;font:inherit;color:var(--text);padding:0 3px;margin:0;outline:none;box-shadow:0 1px 4px #1f232833}.status-bar{display:flex;align-items:center;justify-content:space-between;height:26px;padding:0 12px;border-top:1px solid var(--border);background:#fff;font-size:12px;color:var(--header-text);-webkit-user-select:none;user-select:none;flex:none}.status-left{font-variant-numeric:tabular-nums}.status-right{display:flex;gap:14px;font-variant-numeric:tabular-nums}.status-item{display:inline-flex;gap:5px;align-items:baseline}.status-item.muted,.status-label{color:var(--muted)}