:root {
  --color-surface: #ffffff;
  --color-text: #222327;
  --color-text-muted: #525158;
  --color-primary: #0097d1;
  --color-primary-dark: #003544;
  --color-border: #e0e4ec;

  /* Плавные размеры: интерполяция между 360px и 1440px ширины iframe */
  --font-size-title: clamp(24px, calc(18.67px + 1.48vw), 40px);
  --font-size-section: clamp(16px, calc(14.67px + 0.37vw), 20px);
  --font-size-small: clamp(13px, calc(12.67px + 0.09vw), 14px);
  --font-size-input: clamp(14px, calc(13.33px + 0.19vw), 16px);
  --font-size-button: clamp(14px, calc(13px + 0.28vw), 17px);

  --input-height: clamp(50px, calc(46.67px + 0.93vw), 60px);
  --button-height: clamp(52px, calc(49.33px + 0.74vw), 60px);

  --form-padding-x: clamp(24px, calc(5.33px + 5.19vw), 80px);
  --form-padding-y: clamp(32px, calc(16px + 4.44vw), 80px);
  --form-gap: clamp(24px, calc(21.33px + 0.74vw), 32px);
  --column-gap: clamp(32px, 8vw, 120px);
  --field-column-gap: clamp(8px, calc(7.33px + 0.19vw), 10px);
  --field-row-gap: 24px;
  --intro-gap: clamp(16px, calc(13.33px + 0.74vw), 24px);
  --benefits-gap: clamp(24px, calc(21.33px + 0.74vw), 32px);
  --list-gap: clamp(8px, calc(6.67px + 0.37vw), 12px);
  --agreement-gap: clamp(24px, calc(18.67px + 1.48vw), 32px);
  --button-gap: clamp(24px, calc(13.33px + 2.96vw), 48px);
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-ThinItalic.woff2") format("woff2");
  font-weight: 100;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-Thin.woff2") format("woff2");
  font-weight: 100;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-ExtraLightItalic.woff2") format("woff2");
  font-weight: 200;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-ExtraLight.woff2") format("woff2");
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-LightItalic.woff2") format("woff2");
  font-weight: 300;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-Light.woff2") format("woff2");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-Italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-MediumItalic.woff2") format("woff2");
  font-weight: 500;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-SemiBoldItalic.woff2") format("woff2");
  font-weight: 600;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-BoldItalic.woff2") format("woff2");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-ExtraBoldItalic.woff2") format("woff2");
  font-weight: 800;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-ExtraBold.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-BlackItalic.woff2") format("woff2");
  font-weight: 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter_18pt";
  src: url("../fonts/Inter_18pt-Black.woff2") format("woff2");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}


*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  margin: 0;
  padding: 0;

  background-color: transparent;
}

body {
  font-family: "Inter_18pt", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.3;
  color: var(--color-text);

  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Корневой блок фрейма — карточка во всю ширину iframe */
.calculation-form {
  width: 100%;
  padding: var(--form-padding-y) var(--form-padding-x);

  background-color: var(--color-surface);
  border-radius: 10px;
}

/* Внутренний контейнер — ограничивает контент по макетной ширине и центрирует */
.calculation-form__inner {
  display: flex;
  flex-direction: column;
  gap: var(--form-gap);

  max-width: 1380px;
  margin: 0 auto;
}

@media (min-width: 1200px) {
  .calculation-form__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    column-gap: var(--column-gap);
    row-gap: 0;
  }
}

/* Левая колонка — заголовок и список преимуществ */
.calculation-form__intro {
  display: flex;
  flex-direction: column;
  gap: var(--intro-gap);

  min-width: 0;
}

.calculation-form__title {
  margin: 0;

  font-size: var(--font-size-title);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
}

.calculation-form__title-accent {
  color: var(--color-primary);
}

.calculation-form__benefits {
  display: flex;
  flex-direction: column;
  gap: var(--benefits-gap);
}

.calculation-form__benefits-title {
  margin: 0;

  font-size: var(--font-size-section);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text);
}

.calculation-form__benefits-list {
  display: flex;
  flex-direction: column;
  gap: var(--list-gap);

  margin: 0;
  padding: 0;

  list-style: none;
}

.calculation-form__benefits-item {
  position: relative;

  padding-left: 16px;

  font-size: var(--font-size-small);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text-muted);
}

.calculation-form__benefits-item::before {
  content: "";

  position: absolute;
  top: 0.4em;
  left: 0;

  width: 8px;
  height: 8px;

  background-image: linear-gradient(161deg, #0097d1 37.646%, #003544 131.58%);
  border-radius: 50%;
}

/* Правая колонка — поля и кнопка */
.calculation-form__main {
  display: flex;
  flex-direction: column;

  min-width: 0;
}

.calculation-form__fields {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: var(--field-row-gap);
  column-gap: var(--field-column-gap);
}

@media (min-width: 768px) {
  .calculation-form__fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.calculation-form__field {
  position: relative;

  display: block;
}

.calculation-form__field--full {
  grid-column: 1 / -1;
}

.calculation-form__input {
  display: block;

  width: 100%;
  height: var(--input-height);
  padding: 10px 14px;

  font-family: inherit;
  font-size: var(--font-size-input);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text);

  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  outline: none;

  transition: border-color 0.2s ease;

  appearance: none;
}

.calculation-form__input::placeholder {
  color: transparent;
}

.calculation-form__input:focus {
  border-color: var(--color-primary);
}

.calculation-form__input.is-invalid {
  border-color: #e71531;
}

.calculation-form__error-label {
  position: absolute;
  top: 100%;
  left: 14px;
  right: 14px;

  margin: 2px 0 0;
  padding: 0;
  overflow: hidden;

  font-size: 12px;
  font-weight: 400;
  line-height: 1.3;
  color: #e71531;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.calculation-form__placeholder {
  position: absolute;
  top: calc(var(--input-height) / 2);
  left: 14px;

  font-size: var(--font-size-input);
  line-height: 1.3;
  color: var(--color-text-muted);

  transform: translateY(-50%);
  pointer-events: none;

  transition: opacity 0.15s ease;
}

.calculation-form__input:focus + .calculation-form__placeholder,
.calculation-form__input:not(:placeholder-shown) + .calculation-form__placeholder {
  opacity: 0;
}

.calculation-form__required {
  color: var(--color-primary);
}

/* Honeypot — невидимое поле для ловли ботов */
.calculation-form__honeypot {
  position: absolute;
  left: -9999px;

  width: 1px;
  height: 1px;

  opacity: 0;

  pointer-events: none;
}

/* Пользовательское соглашение */
.calculation-form__agreement {
  position: relative;

  display: flex;
  align-items: flex-start;
  gap: 8px;

  margin-top: var(--agreement-gap);

  cursor: pointer;
  user-select: none;
}

.calculation-form__agreement .calculation-form__error-label {
  left: 24px;
  right: 0;
}

.calculation-form__agreement-input {
  position: absolute;

  width: 1px;
  height: 1px;
  overflow: hidden;

  opacity: 0;
  clip-path: inset(50%);
  pointer-events: none;
}

.calculation-form__agreement-indicator {
  position: relative;

  flex-shrink: 0;

  width: 16px;
  height: 16px;
  margin-top: 2px;

  background-color: transparent;
  border: 1px solid var(--color-primary);
  border-radius: 50%;
}

.calculation-form__agreement-indicator::after {
  content: "";

  position: absolute;
  top: 50%;
  left: 50%;

  width: 8px;
  height: 8px;

  background-color: var(--color-primary);
  border-radius: 50%;

  transform: translate(-50%, -50%) scale(0);
  transition: transform 0.15s ease;
}

.calculation-form__agreement-input:checked + .calculation-form__agreement-indicator::after {
  transform: translate(-50%, -50%) scale(1);
}

.calculation-form__agreement-input:focus-visible + .calculation-form__agreement-indicator {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.calculation-form__agreement-text {
  flex: 1 1 0;

  min-width: 0;

  font-size: var(--font-size-small);
  font-weight: 500;
  line-height: 1.3;
  color: var(--color-text);
}

.calculation-form__agreement-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-skip-ink: none;

  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.calculation-form__agreement-link:hover {
  color: var(--color-primary);
  text-decoration-color: transparent;
}

.calculation-form__agreement-link:focus-visible {
  color: var(--color-primary);
  outline: none;
}

/* Кнопка отправки */
.calculation-form__submit {
  display: flex;
  align-items: center;
  justify-content: center;

  position: relative;
  isolation: isolate;

  width: 100%;
  height: var(--button-height);
  margin-top: var(--button-gap);
  padding: 0 30px;

  font-family: inherit;
  font-size: var(--font-size-button);
  font-weight: 500;
  line-height: 1.1;
  color: #ffffff;

  background-image: linear-gradient(161deg, #0097d1 37.646%, #003544 131.58%);
  border: 0;
  border-radius: 53px;
  outline: none;

  transition: transform 0.15s ease, box-shadow 0.2s ease;

  cursor: pointer;
  appearance: none;
}

.calculation-form__submit::before {
  content: "";

  position: absolute;
  z-index: -1;
  inset: 0;

  background-image: linear-gradient(-19deg, #0097d1 37.646%, #003544 131.58%);
  border-radius: inherit;
  opacity: 0;

  transition: opacity 0.45s ease-in-out;
}

.calculation-form__submit:hover {
  box-shadow: 0 8px 24px rgb(0 151 209 / .25);
}

.calculation-form__submit:hover::before {
  opacity: 1;
}

.calculation-form__submit:active {
  transform: scale(0.98);
}

.calculation-form__submit:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}