:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#f0f2f5;color:#1c1e21;margin:0;padding:20px;display:flex;justify-content:center}.app-root{width:100%;max-width:1200px;background:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a;padding:24px}h1{font-size:24px;font-weight:600;margin-top:0;margin-bottom:20px;color:#333}.controls-panel{display:flex;flex-wrap:wrap;gap:16px;align-items:center;padding-bottom:20px;border-bottom:1px solid #ddd;margin-bottom:20px}.control-group{display:flex;gap:12px;align-items:center;padding:8px 12px;border-left:2px solid #e0e0e0}.control-group:first-child{border-left:none;padding-left:0}.controls-panel label{display:flex;align-items:center;gap:6px;font-size:14px}.controls-panel input[type=number]{width:60px;padding:6px 8px;border:1px solid #ccc;border-radius:4px;font-size:14px;transition:border-color .2s}.controls-panel input[type=number]:focus{outline:none;border-color:#007bff}.controls-panel button{padding:8px 14px;font-size:14px;font-weight:500;border:none;border-radius:4px;cursor:pointer;transition:background-color .2s;background-color:#007bff;color:#fff}.controls-panel button:hover{background-color:#0056b3}.controls-panel button.secondary{background-color:#6c757d}.controls-panel button.secondary:hover{background-color:#5a6268}.controls-panel .export-button{margin-left:auto;background-color:#28a745}.controls-panel .export-button:hover{background-color:#218838}.controls-panel .import-button{margin-left:10px;background-color:#17a2b8;padding:8px 14px;font-size:14px;font-weight:500;border-radius:4px;color:#fff;cursor:pointer;transition:background-color .2s}.controls-panel .import-button:hover{background-color:#138496}.edit-mode-group strong{font-weight:500}.edit-mode-group label{cursor:pointer}.grid-container-wrapper{overflow:auto;border:1px solid #ddd;padding:12px;background-color:#fafafa;border-radius:6px}.grid-container{display:grid;gap:4px;align-items:center;justify-content:start}.app-footer{margin-top:20px;font-size:13px;color:#666;text-align:center}