feat(calculator, city-page): add width warning option and optimize stats layout on mobile

app/klimatyzacja/[miasto]/page.tsx

@@ -165,9 +165,8 @@ export default async function MiastoPage({ params }: Props) {
                 </button>
               </Link>
             </div>
-            <div className="grid grid-cols-2 gap-4">
+            <div className="grid grid-cols-1 sm:grid-cols-3 gap-4">
               {[
-                { label: 'Dofinansowanie', value: 'do 135 000 zł', sub: 'z programu Czyste Powietrze' },
                 { label: 'Oszczędność', value: 'do 60%', sub: 'niższe koszty ogrzewania' },
                 { label: 'Sprawność', value: 'COP 4–5', sub: 'na każdy 1 kW energii' },
                 { label: 'Gwarancja', value: '5 lat', sub: 'na urządzenie i montaż' },

components/kalkulator/KalkulatorClient.tsx

@@ -77,6 +77,8 @@ function estimateInstall(pipes: string, rooms: number, installMethod: string, ou
 const STEPS = ['Typ', 'Pomieszczenie', 'Instalacja', 'Budżet', 'Dobór'] as const;
 
 export function KalkulatorClient({ products }: Props) {
+  const [showWidthWarning, setShowWidthWarning] = useState(false);
+  const [maxWidth, setMaxWidth] = useState(80);
   const [deviceType, setDeviceType] = useSessionState<'klimatyzacja' | 'pompa'>('calc_deviceType', 'klimatyzacja');
   const [pumpFormSent, setPumpFormSent] = useState(false);
   const [pumpForm, setPumpForm] = useState({ name: '', phone: '', city: '', message: '' });
@@ -254,16 +256,20 @@ export function KalkulatorClient({ products }: Props) {
         </div>
 
         {/* Pasek postępu */}
-        <div className="flex items-center gap-2 mb-8">
+        <div className="flex items-center mb-8">
           {STEPS.map((s, i) => (
-            <div key={s} className="flex-1 flex items-center gap-2">
+            <div key={s} className="flex items-start flex-1 last:flex-none">
-              <div className={`size-7 rounded-full flex items-center justify-center text-xs font-bold shrink-0 transition-all ${
+              <div className="flex flex-col items-center gap-1">
-                i < step ? 'bg-green-500 text-white' : i === step ? 'bg-accent text-white' : 'bg-slate-200 text-text-muted'
+                <div className={`size-7 rounded-full flex items-center justify-center text-xs font-bold shrink-0 transition-all ${
-              }`}>
+                  i < step ? 'bg-green-500 text-white' : i === step ? 'bg-accent text-white' : 'bg-slate-200 text-text-muted'
-                {i < step ? <Check className="size-3.5" /> : i + 1}
+                }`}>
+                  {i < step ? <Check className="size-3.5" /> : i + 1}
+                </div>
+                <span className={`text-xs font-medium hidden sm:block whitespace-nowrap ${i === step ? 'text-accent' : 'text-text-muted'}`}>{s}</span>
               </div>
-              <span className={`text-xs font-medium hidden sm:block ${i === step ? 'text-accent' : 'text-text-muted'}`}>{s}</span>
+              {i < STEPS.length - 1 && (
-              {i < STEPS.length - 1 && <div className={`flex-1 h-0.5 ${i < step ? 'bg-green-500' : 'bg-slate-200'}`} />}
+                <div className={`flex-1 h-0.5 mx-2 mt-[13px] ${i < step ? 'bg-green-500' : 'bg-slate-200'}`} />
+              )}
             </div>
           ))}
         </div>
@@ -436,6 +442,63 @@ export function KalkulatorClient({ products }: Props) {
                 </button>
               )}
 
+              {/* Ograniczenie szerokości */}
+              <div className="bg-slate-50 border border-border rounded-xl p-4">
+                <div className="flex items-start justify-between gap-3 mb-2">
+                  <div>
+                    <p className="text-sm font-semibold text-primary">Ograniczenie szerokości jednostki?</p>
+                    <p className="text-xs text-text-muted mt-0.5">Np. wąska ściana, wnęka, szafa</p>
+                  </div>
+                  <button
+                    onClick={() => setShowWidthWarning(prev => !prev)}
+                    className={`shrink-0 text-xs font-bold px-3 py-1.5 rounded-lg transition-colors ${
+                      showWidthWarning ? 'bg-amber-100 text-amber-700' : 'bg-slate-200 text-slate-600 hover:bg-slate-300'
+                    }`}
+                  >
+                    {showWidthWarning ? 'Tak, mam ograniczenie' : 'Nie dotyczy'}
+                  </button>
+                </div>
+                {showWidthWarning && (
+                  <div className="mt-3">
+                    <div className="flex items-center justify-between mb-1.5">
+                      <span className="text-xs text-text-muted">Maksymalna szerokość jednostki</span>
+                      <span className="text-xs font-bold text-amber-700 bg-amber-100 px-2 py-0.5 rounded-md">{maxWidth} cm</span>
+                    </div>
+                    <div className="relative h-5 flex items-center">
+                      <div className="absolute w-full h-1.5 bg-slate-200 rounded-full" />
+                      <div
+                        className="absolute h-1.5 bg-amber-400 rounded-full"
+                        style={{ width: `${((maxWidth - 40) / 80) * 100}%` }}
+                      />
+                      <input
+                        type="range" min={40} max={120} step={5} value={maxWidth}
+                        onChange={e => setMaxWidth(Number(e.target.value))}
+                        className="absolute w-full h-1.5 opacity-0 cursor-pointer z-10"
+                      />
+                      <div
+                        className="absolute size-4 bg-white border-2 border-amber-400 rounded-full shadow-md pointer-events-none"
+                        style={{ left: `calc(${((maxWidth - 40) / 80) * 100}% - 8px)` }}
+                      />
+                    </div>
+                    <div className="flex justify-between text-xs text-text-muted mt-1">
+                      <span>40 cm</span>
+                      <span>120 cm</span>
+                    </div>
+                    <div className="mt-3 flex items-start gap-2 p-3 bg-amber-50 border border-amber-200 rounded-xl">
+                      <span className="text-amber-500 text-base shrink-0">⚠️</span>
+                      <p className="text-xs text-amber-800 leading-relaxed">
+                        Standardowe jednostki split mają <strong>70–110 cm szerokości</strong>. 
+                        {maxWidth < 70 && ' Przy tak małej przestrzeni wybór jest bardzo ograniczony — '}
+                        {maxWidth >= 70 && maxWidth < 85 && ' Przy tej szerokości dostępne są kompaktowe modele — '}
+                        {maxWidth >= 85 && ' Większość modeli powinna się zmieścić — '}
+                        skonsultuj wymiary konkretnego modelu przed zakupem.
+                        <a href="/kontakt" className="ml-1 font-bold text-amber-700 underline">Zapytaj nas →</a>
+                      </p>
+                    </div>
+                  </div>
+                )}
+              </div>
+
               <div className="p-3 bg-accent/10 rounded-xl">
                 <p className="text-sm text-accent font-semibold">
                   Łączna wymagana moc: ok. <strong>{requiredPowerRounded} kW</strong>