let dutySteps = “”; const currencySymbol = “$”, fixedCurrency = “USD”; function calculateImportDuty(){ dutySteps=””; const itemValue=parseFloat(document.getElementById(“itemValue”).value); const shipping=parseFloat(document.getElementById(“shippingCost”).value); const dutyRate=parseFloat(document.getElementById(“importDutyRate”).value)/100; const vatRate=parseFloat(document.getElementById(“vatRate”).value)/100; if(isNaN(itemValue)||isNaN(shipping)||isNaN(dutyRate)||isNaN(vatRate)||itemValue<=0||shipping<=0){ alert("Please enter valid positive values for all fields."); return; } const duty = (itemValue + shipping) * dutyRate; const vat = (itemValue + shipping + duty) * vatRate; const totalCost = itemValue + shipping + duty + vat; document.getElementById("totalDuty").value = formatCurrency(duty); document.getElementById("totalCost").value = formatCurrency(totalCost); dutySteps += `Inputs:
Item Value: ${formatCurrency(itemValue)}
Shipping: ${formatCurrency(shipping)}
Import Duty Rate: ${(dutyRate*100).toFixed(1)}%
VAT Rate: ${(vatRate*100).toFixed(1)}%

`; dutySteps += `Formulas:
Import Duty = (Item Value + Shipping) × Duty Rate
VAT = (Item Value + Shipping + Duty) × VAT Rate
Total Cost = Item Value + Shipping + Duty + VAT

`; dutySteps += `Results:
Import Duty: ${formatCurrency(duty)}
VAT: ${formatCurrency(vat)}
Total Cost: ${formatCurrency(totalCost)}
`; if(document.getElementById(“calculationStepsDuty”).style.display===”block”){ document.getElementById(“calculationStepsDuty”).innerHTML = dutySteps; } } function resetImportDuty(){ document.querySelectorAll(“#calculator input”).forEach(el=>el.value=””); dutySteps=””; document.getElementById(“calculationStepsDuty”).innerHTML=”

Not calculated yet.

“; } function toggleImportDutySteps(){ const s=document.getElementById(“calculationStepsDuty”); const a=document.getElementById(“toggleArrowDuty”); if(s.style.display===”none”||s.style.display===””){ s.style.display=”block”;a.style.transform=”rotate(180deg)”; s.innerHTML=dutySteps||”

Not calculated yet.

“; }else{s.style.display=”none”;a.style.transform=”rotate(0deg)”;} } function formatCurrency(n){return currencySymbol+n.toFixed(2)+” “+fixedCurrency;}