better witdh and price comparation formula

assets/formulas/formulas.d4rt

@@ -152,7 +152,7 @@ Where:
   ,
   {
     "name": "Compare price per mass",
-    "description": "Compares two products by their price per mass and returns which is cheaper.",
+    "description": "Compares two products by their price per mass and returns which is cheaper, including price per kg for each product.",
     "input": [
       {"name": "price1", "unit": "currency"},
       {"name": "mass1", "unit": "kilogram"},
@@ -164,11 +164,11 @@ Where:
       var p1 = price1 / mass1;
       var p2 = price2 / mass2;
       if (p1 < p2) {
-        Result = 'first product is cheaper';
+        Result = 'first product is cheaper at \${p1.toStringAsFixed(2)} currency/kg vs \${p2.toStringAsFixed(2)} currency/kg';
       } else if (p2 < p1) {
-        Result = 'second product is cheaper';
+        Result = 'second product is cheaper at \${p2.toStringAsFixed(2)} currency/kg vs \${p1.toStringAsFixed(2)} currency/kg';
       } else {
-        Result = 'both products have the same price per mass';
+        Result = 'both products have the same price per mass at \${p1.toStringAsFixed(2)} currency/kg';
       }
     """,
     "tags": ["comparison", "shopping", "economics"]

lib/ai/formula_screen.dart

@@ -251,10 +251,17 @@ class _FormulaScreenState extends State<FormulaScreen> {
         const SizedBox(height: 8),
         Row(
           children: [
-            Text(widget.formula.output.name),
+            // Fixed width for field name
-            const Spacer(),
             SizedBox(
               width: 150,
+              child: Text(
+                widget.formula.output.name,
+                overflow: TextOverflow.ellipsis,
+              ),
+            ),
+            const SizedBox(width: 8), // Add some spacing
+            // Flexible space for result field
+            Expanded(
               child: TextFormField(
                 readOnly: true,
                 enabled: false,
@@ -291,12 +298,19 @@ class _FormulaScreenState extends State<FormulaScreen> {
       padding: const EdgeInsets.symmetric(vertical: 8.0),
       child: Row(
         children: [
-          Text(variable.name),
+          // Fixed width for field name
-          const Spacer(),
-          if (isCategorical) ...[
           SizedBox(
             width: 150,
-              child: DropdownButtonFormField<String>(
+            child: Text(
+              variable.name,
+              overflow: TextOverflow.ellipsis,
+            ),
+          ),
+          const SizedBox(width: 8), // Add some spacing
+          // Flexible space for input field
+          Expanded(
+            child: isCategorical 
+              ? DropdownButtonFormField<String>(
                   value: _selectedValues[variable.name],
                   items: variable.values!
                       .map((v) => DropdownMenuItem<String>(value: v, child: Text(v)))
@@ -314,25 +328,8 @@ class _FormulaScreenState extends State<FormulaScreen> {
                     if (value == null || value.isEmpty) return 'Required';
                     return null;
                   },
-              ),
+                )
-            ),
+              : TextFormField(
-            const SizedBox(width: 8),
-            if (variable.unit != null)
-              UnitDropdown(
-                corpus: widget.corpus,
-                variable: variable,
-                selectedUnit: _selectedUnits[variable.name],
-                onUnitChanged: (unit) {
-                  _selectedUnits[variable.name] = unit;
-                  _evaluateFormula();
-                  setState(() {
-                  });
-                },
-              ),
-          ] else ...[
-            SizedBox(
-              width: 100,
-              child: TextFormField(
                   controller: _inputControllers[variable.name],
                   keyboardType: TextInputType.number,
                   inputFormatters: [
@@ -364,7 +361,6 @@ class _FormulaScreenState extends State<FormulaScreen> {
               },
             ),
         ],
-        ],
       ),
     );
   }