Калькулятор рефинансирования

.refi-calc { max-width: 560px; margin: 40px auto; padding: 32px 28px; background: #141a24; border-radius: 28px; border: 1px solid rgba(255,255,255,0.04); color: #f0f2f7; font-family: ‘Inter’, -apple-system, BlinkMacSystemFont, ‘Segoe UI’, Roboto, sans-serif; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.8), inset 0 1px 0 rgba(255,255,255,0.04); } .refi-calc h2 { font-size: 22px; font-weight: 600; margin-bottom: 4px; } .refi-calc .sub { font-size: 13px; color: #6b7a90; margin-bottom: 28px; } .refi-calc .section-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: #6b7a90; margin: 24px 0 12px; padding-bottom: 6px; border-bottom: 1px solid #1e2836; } .refi-calc .section-label:first-of-type { margin-top: 0; } .refi-calc .field-group { margin-bottom: 18px; } .refi-calc .field-group label { display: flex; justify-content: space-between; font-size: 13px; font-weight: 500; color: #c8d0dc; margin-bottom: 4px; } .refi-calc .field-group label span:last-child { font-weight: 400; color: #6b7a90; } .refi-calc .field-group input[type=»number»] { width: 100%; padding: 12px 16px; background: #0f151f; border: 1px solid #262f3d; border-radius: 14px; color: #f0f2f7; font-size: 17px; font-weight: 500; outline: none; transition: 0.2s; margin-top: 4px; } .refi-calc .field-group input[type=»number»]:focus { border-color: #4a7cf7; box-shadow: 0 0 0 3px rgba(74,124,247,0.15); background: #131b28; } .refi-calc .field-group input[type=»range»] { -webkit-appearance: none; appearance: none; width: 100%; height: 4px; background: #262f3d; border-radius: 2px; outline: none; margin: 8px 0 4px; } .refi-calc .field-group input[type=»range»]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 18px; height: 18px; background: #4a7cf7; border-radius: 50%; cursor: pointer; box-shadow: 0 0 0 4px rgba(74,124,247,0.15); transition: 0.15s; } .refi-calc .field-group input[type=»range»]::-webkit-slider-thumb:hover { transform: scale(1.1); background: #5f8af8; } .refi-calc .field-group input[type=»range»]::-moz-range-thumb { width: 18px; height: 18px; background: #4a7cf7; border: none; border-radius: 50%; cursor: pointer; } .refi-calc .comparison-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 24px 0; } .refi-calc .compare-card { background: #0f151f; border: 1px solid #1e2836; border-radius: 16px; padding: 16px; } .refi-calc .compare-card .card-title { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: #6b7a90; margin-bottom: 12px; text-align: center; } .refi-calc .compare-card .row { display: flex; justify-content: space-between; font-size: 14px; padding: 5px 0; border-bottom: 1px solid #141a24; } .refi-calc .compare-card .row:last-child { border-bottom: none; } .refi-calc .compare-card .row .label { color: #6b7a90; } .refi-calc .compare-card .row .val { color: #c8d0dc; font-weight: 500; } .refi-calc .compare-card .row .val.accent { color: #4a7cf7; } .refi-calc .savings-box { background: linear-gradient(135deg, #1a2a1e 0%, #0f1f14 100%); border: 1px solid #2d4a35; border-radius: 16px; padding: 20px; margin: 20px 0; text-align: center; } .refi-calc .savings-box .label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: #6b9a7a; margin-bottom: 6px; } .refi-calc .savings-box .value { font-size: 28px; font-weight: 700; color: #4caf7a; } .refi-calc .savings-box .sub-value { font-size: 13px; color: #6b7a90; margin-top: 4px; } .refi-calc .savings-box.warn { background: linear-gradient(135deg, #2a1a1a 0%, #1f0f0f 100%); border-color: #4a2d2d; } .refi-calc .savings-box.warn .label { color: #9a6b6b; } .refi-calc .savings-box.warn .value { color: #c0392b; } .refi-calc .btn-primary { width: 100%; padding: 14px; background: #4a7cf7; border: none; border-radius: 16px; color: #fff; font-size: 16px; font-weight: 600; cursor: pointer; transition: 0.2s; margin-top: 8px; } .refi-calc .btn-primary:hover { background: #5f8af8; } .refi-calc .btn-primary:active { transform: scale(0.98); } .refi-calc input[type=number]::-webkit-inner-spin-button, .refi-calc input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; } .refi-calc input[type=number] { -moz-appearance: textfield; } @media (max-width: 480px) { .refi-calc { padding: 24px 16px; margin: 20px 12px; } .refi-calc .comparison-grid { gap: 8px; } .refi-calc .compare-card { padding: 12px; } .refi-calc .compare-card .row { font-size: 13px; } .refi-calc .savings-box .value { font-size: 22px; } } (function() { // Элементы текущего кредита const curAmountSlider = document.getElementById(‘curAmountSlider’); const curAmountInput = document.getElementById(‘curAmountInput’); const curAmountDisplay = document.getElementById(‘curAmountDisplay’); const curTermSlider = document.getElementById(‘curTermSlider’); const curTermInput = document.getElementById(‘curTermInput’); const curTermDisplay = document.getElementById(‘curTermDisplay’); const curRateSlider = document.getElementById(‘curRateSlider’); const curRateInput = document.getElementById(‘curRateInput’); const curRateDisplay = document.getElementById(‘curRateDisplay’); // Элементы нового кредита const newAmountSlider = document.getElementById(‘newAmountSlider’); const newAmountInput = document.getElementById(‘newAmountInput’); const newAmountDisplay = document.getElementById(‘newAmountDisplay’); const newTermSlider = document.getElementById(‘newTermSlider’); const newTermInput = document.getElementById(‘newTermInput’); const newTermDisplay = document.getElementById(‘newTermDisplay’); const newRateSlider = document.getElementById(‘newRateSlider’); const newRateInput = document.getElementById(‘newRateInput’); const newRateDisplay = document.getElementById(‘newRateDisplay’); const feeSlider = document.getElementById(‘feeSlider’); const feeInput = document.getElementById(‘feeInput’); const feeDisplay = document.getElementById(‘feeDisplay’); // Результаты const curPayment = document.getElementById(‘curPayment’); const curTotal = document.getElementById(‘curTotal’); const curOverpay = document.getElementById(‘curOverpay’); const newPayment = document.getElementById(‘newPayment’); const newTotal = document.getElementById(‘newTotal’); const newOverpay = document.getElementById(‘newOverpay’); const savingsBox = document.getElementById(‘savingsBox’); const savingsValue = document.getElementById(‘savingsValue’); const savingsDetail = document.getElementById(‘savingsDetail’); const refiCalcBtn = document.getElementById(‘refiCalcBtn’); // Расчёт аннуитетного платежа function annuity(amount, years, annualRate) { const months = years * 12; const monthlyRate = (annualRate / 100) / 12; if (monthlyRate === 0) return amount / months; const factor = Math.pow(1 + monthlyRate, months); return amount * (monthlyRate * factor) / (factor — 1); } // Основной расчёт function calculate() { const curAmount = parseFloat(curAmountInput.value) || 0; const curYears = parseFloat(curTermInput.value) || 1; const curRate = parseFloat(curRateInput.value) || 0; const newAmount = parseFloat(newAmountInput.value) || 0; const newYears = parseFloat(newTermInput.value) || 1; const newRate = parseFloat(newRateInput.value) || 0; const fee = parseFloat(feeInput.value) || 0; // Текущий кредит const curMonths = curYears * 12; const curMonthly = annuity(curAmount, curYears, curRate); const curTotalSum = curMonthly * curMonths; const curOver = curTotalSum — curAmount; // Новый кредит const newMonths = newYears * 12; const newMonthly = annuity(newAmount, newYears, newRate); const newTotalSum = newMonthly * newMonths + fee; const newOver = newTotalSum — newAmount; // Обновление UI curPayment.textContent = Math.round(curMonthly).toLocaleString(‘ru-RU’) + ‘ ₽’; curTotal.textContent = Math.round(curTotalSum).toLocaleString(‘ru-RU’) + ‘ ₽’; curOverpay.textContent = Math.round(curOver).toLocaleString(‘ru-RU’) + ‘ ₽’; newPayment.textContent = Math.round(newMonthly).toLocaleString(‘ru-RU’) + ‘ ₽’; newTotal.textContent = Math.round(newTotalSum).toLocaleString(‘ru-RU’) + ‘ ₽’; newOverpay.textContent = Math.round(newOver).toLocaleString(‘ru-RU’) + ‘ ₽’; // Выгода const monthlySavings = curMonthly — newMonthly; const totalSavings = curTotalSum — newTotalSum; const effectiveSavings = totalSavings — fee; if (totalSavings > 0) { savingsBox.className = ‘savings-box’; savingsValue.textContent = ‘+’ + Math.round(totalSavings).toLocaleString(‘ru-RU’) + ‘ ₽’; savingsDetail.textContent = `Платёж снизится на ${Math.round(monthlySavings).toLocaleString(‘ru-RU’)} ₽/мес. · Переплата меньше на ${Math.round(totalSavings).toLocaleString(‘ru-RU’)} ₽`; } else if (totalSavings { const val = parseFloat(slider.value); input.value = val; if (display) display.textContent = formatter ? formatter(val) : val; calculate(); }; slider.addEventListener(‘input’, update); input.addEventListener(‘input’, function() { let val = parseFloat(this.value); if (isNaN(val)) return; const min = parseFloat(slider.min); const max = parseFloat(slider.max); const step = parseFloat(slider.step) || 1; if (val max) val = max; val = Math.round(val / step) * step; slider.value = val; this.value = val; if (display) display.textContent = formatter ? formatter(val) : val; calculate(); }); const initVal = parseFloat(slider.value); input.value = initVal; if (display) display.textContent = formatter ? formatter(initVal) : initVal; } // Форматтеры const rubFormatter = (v) => Number(v).toLocaleString(‘ru-RU’) + ‘ ₽’; const termFormatter = (v) => v + ‘ ‘ + declOfNum(v, [‘год’, ‘года’, ‘лет’]); const rateFormatter = (v) => v + ‘ %’; function declOfNum(num, forms) { const n = Math.abs(num) % 100; const n1 = n % 10; if (n > 10 && n 1 && n1 < 5) return forms[1]; if (n1 === 1) return forms[0]; return forms[2]; } // Инициализация sync(curAmountSlider, curAmountInput, curAmountDisplay, rubFormatter); sync(curTermSlider, curTermInput, curTermDisplay, termFormatter); sync(curRateSlider, curRateInput, curRateDisplay, rateFormatter); sync(newAmountSlider, newAmountInput, newAmountDisplay, rubFormatter); sync(newTermSlider, newTermInput, newTermDisplay, termFormatter); sync(newRateSlider, newRateInput, newRateDisplay, rateFormatter); sync(feeSlider, feeInput, feeDisplay, rubFormatter); // Кнопка refiCalcBtn.addEventListener('click', calculate); // Первоначальный расчёт calculate(); })();