diff --git a/src/modules/ar1/pages/Ar1Wizard.js b/src/modules/ar1/pages/Ar1Wizard.js
index 5c09ccb..acc8a89 100644
--- a/src/modules/ar1/pages/Ar1Wizard.js
+++ b/src/modules/ar1/pages/Ar1Wizard.js
@@ -55,6 +55,19 @@ const Ar1Wizard = () => {
         return false;
     };
 
+    // show_if formati seed: "campo == 'VALORE'", "campo == true", "campo != true"
+    const evalShowIf = (expr, quadroData) => {
+        if (!expr) return true;
+        const m = String(expr).match(/^\s*(\w+)\s*(==|!=)\s*(?:'(.*)'|(true|false))\s*$/);
+        if (!m) return true; // formato ignoto: non nascondere mai per errore
+        const raw = (quadroData || {})[m[1]];
+        const val = raw && typeof raw === 'object' && 'value' in raw ? raw.value : raw;
+        const target = m[4] !== undefined ? (m[4] === 'true') : m[3];
+        const eq = m[4] !== undefined ? (!!val === target) : (String(val ?? '') === target);
+        return m[2] === '==' ? eq : !eq;
+    };
+    const isFieldVisible = (field, quadroData) => evalShowIf(field.show_if, quadroData);
+
     const validateQuadro = (quadro, data) => {
         const errs = [];
         const d = data || {};
@@ -78,8 +91,14 @@ const Ar1Wizard = () => {
             if (sl.required && isEmptyVal(d[sl.id])) errs.push(`Quadro ${quadro.id}: allegato obbligatorio — ${sl.label}`);
         });
         (quadro.fields || []).forEach(f => {
-            if (f.required && !f.show_if && isEmptyVal(d[f.id])) errs.push(`Quadro ${quadro.id}: ${f.label}`);
+            if (f.required && isFieldVisible(f, d) && isEmptyVal(d[f.id])) errs.push(`Quadro ${quadro.id}: ${f.label}`);
         });
+        if (quadro.nested_full && evalShowIf(quadro.nested_full.show_if, d)) {
+            const nd = d.nested || {};
+            (quadro.nested_full.fields || []).forEach(f => {
+                if (f.required && isFieldVisible(f, nd) && isEmptyVal(nd[f.id])) errs.push(`Quadro ${quadro.id} (dettaglio): ${f.label}`);
+            });
+        }
         return errs;
     };
 
@@ -416,8 +435,8 @@ const Ar1Wizard = () => {
             <div>
                 <h3>{quadro.title}</h3>
                 {quadro.description && <p style={{ color: '#666' }}>{quadro.description}</p>}
-                {(quadro.fields || []).map(field => renderField(field, q[field.id], (fid, val) => handleFieldChange(quadro.id, fid, val), `q-${quadro.id}`))}
-                {quadro.nested_full && (
+                {(quadro.fields || []).filter(field => isFieldVisible(field, q)).map(field => renderField(field, q[field.id], (fid, val) => handleFieldChange(quadro.id, fid, val), `q-${quadro.id}`))}
+                {quadro.nested_full && evalShowIf(quadro.nested_full.show_if, q) && (
                     <div style={{ marginTop: 16, padding: 12, background: '#f5f5f5', borderRadius: 4 }}>
                         <h4 style={{ marginTop: 0 }}>{__('Dettaglio aggiuntivo', 'gepafin')}</h4>
                         {(quadro.nested_full.fields || []).map(field => renderField(