:root {
  --blue-1: #0072C2;
  --blue-2: #007BD1;
  --blue-3: #0085E2;
  --blue-4: #B1DAF6;
  --blue-5: #CAE8FC;
  --blue-6: #E6F3FC;

  --neutral-1: #252831;
  --neutral-2: #82868D;
  --neutral-3: #BEC1C5;
  --neutral-4: #D5D5D5;
  --neutral-5: #E5E5E6;
  --neutral-6: #EDEDED;
  --neutral-7: #F6F6F6;
  --neutral-8: #FAFAFA;
  --neutral-9: #FFFFFF;
}

/* компоненты */
.button {
  text-align: center;
  font-size: clamp(1rem, 0.881rem + 0.51vw, 1.25rem);
  font-weight: 600;
  background-color: var(--blue-3);
  color: var(--neutral-9);
  border: 1px solid transparent;
  border-radius: 100px;
  padding: 18px 32px;
  transition: all .2s ease-in;

  &:hover {
    background-color: var(--blue-2);
  }

  &:active {
    background-color: var(--blue-1);
  }

  &:disabled {
    background-color: var(--blue-4);
    cursor: not-allowed;
  }

  &:focus-visible {
    outline: 2px dashed var(--blue-2);
    outline-offset: 2px;
  }
}
.button--transparent {
  background-color: var(--neutral-9);
  color: var(--blue-3);
  border: 1px solid var(--blue-3);

  &:hover {
    background-color: var(--blue-6);
  }

  &:active {
    color: var(--neutral-9);
    background-color: var(--blue-1);
  }

  &:disabled {
    border-color: 1px solid var(--blue-4);
    color: var(--blue-4);
    background-color: var(--neutral-9);
    cursor: not-allowed;
  }
}
@media (width < 767px) {
  .button {
    padding: 9px 16px;
  }
}

/* общие стил */
.page {
  font-family: "Nunito", sans-serif;
  font-weight: 500;
  background-color: var(--neutral-6);
  color: var(--neutral-1);
  /*min-height: 100vh;*/
}
.app-container {
  max-width: 1160px;
  width: 100%;
  margin-inline: auto;
}
.section {
  display: none;
  flex-direction: column;
  padding-inline: 20px;
  transition: opacity 0.25s ease;
}
.section.active {
  display: flex;
}

/* экраны */
.welcome {
  align-items: center;
  padding-top: 40px;
}
.welcome__logo {
  padding-bottom: 40px;
}
.welcome__main-image {
  padding-bottom: 40px;
}
.welcome__title {
  text-align: center;
  font-size: clamp(1.875rem, 1.129rem + 3.18vw, 3.438rem);
  font-weight: 600;
  line-height: 1.2;
  padding-bottom: 20px;
}
.welcome__title--color-text {
  color: var(--blue-3);
}
.welcome__description {
  text-align: center;
  font-size: clamp(1.125rem, 0.946rem + 0.76vw, 1.5rem);
  padding-bottom: 30px;
}
.welcome__button {
  font-size: clamp(1rem, 0.761rem + 1.02vw, 1.5rem);
}
@media (width < 767px) {
  .welcome {
    padding-top: 24px;
  }
  .welcome__logo {
    padding-bottom: 64px;
  }
  .welcome__main-image {
    padding-bottom: 30px;
  }
  .welcome__title {
    padding-bottom: 16px;
  }
  .welcome__description {
    padding-bottom: 24px;
  }
  .welcome__description-paragraph:last-child {
    font-size: 16px;
    font-weight: 500;
    padding-top: 12px;
  }
  .welcome__button {
    width: 100%;
  }
}


.question {
  padding-top: 60px;
}
.question__title {
  font-size: clamp(1.5rem, 1.142rem + 1.53vw, 2.25rem);
  font-weight: 600;
  padding-bottom: 16px;
}
.question__subtitle {
  font-size: clamp(1rem, 0.94rem + 0.25vw, 1.125rem);
  font-weight: 600;
  padding-bottom: 30px;
}
.question__body {
  padding: 32px;
  background-color: var(--neutral-9);
  border: 1px solid var(--neutral-6);
  border-radius: 20px;
}
.question__body:has(.final) {
  padding-block: 92px;
}
/* прогресс бар */
.question__progress-container {
  padding-bottom: 20px;
}
.question__progress-text {
  font-size: 14px;
  font-weight: 400;
  color: var(--neutral-2);
  padding-bottom: 8px;
}
.question__progress-bar-bg {
  height: 6px;
  background-color: var(--neutral-7);
  border-radius: 20px;
  overflow: hidden;
}
.question__progress-bar-fill {
  height: 100%;
  background-color: var(--blue-3);
  width: 0%;
  border-radius: 20px;
  transition: width 0.2s;
}
/* вопросы */
.question__text {
  font-size: clamp(1.25rem, 0.951rem + 1.27vw, 1.875rem);
  font-weight: 600;
  padding-bottom: 24px;
}
.question__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 50px;
}
.question__option-card {
  display: flex;
  align-items: center;
  padding: 20px 16px;
  border: 1px solid var(--neutral-5);
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.12s;

  &:hover {
    background-color: var(--blue-6);
  }
}
.question__option-card.selected {
  border-color: var(--blue-3);
}
.question__option-letter {
  margin-right: 20px;
  font-size: clamp(1.25rem, 0.951rem + 1.27vw, 1.875rem);
  font-weight: 700;
}
.question__option-card.selected .question__option-letter {
  color: var(--blue-3);
}
.question__option-text {
  font-size: clamp(1rem, 0.94rem + 0.25vw, 1.125rem);
}
.question__buttons-group {
  display: flex;
  justify-content: end;
}
.question__button:first-child {
  margin-right: auto;
}
@media (width < 767px) {
  .question {
    padding-top: 24px;
    padding-inline: 12px;
  }
  .question__title {
    padding-bottom: 12px;
  }
  .question__subtitle {
    font-weight: 500;
    padding-bottom: 16px;
  }
  .question__body {
    padding: 20px 16px;
  }
  .question__progress-container {
    padding-bottom: 16px;
  }
  .question__body:has(.final) {
    padding-block: 16px;
  }
}
@media (width < 375px) {
  .question__buttons-group {
    flex-direction: column-reverse;
    row-gap: 10px;
    align-items: center;
  }
  .question__button:first-child {
    margin-right: unset;
  }
}

.final {
  max-width: 500px;
  width: 100%;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--blue-6);
  border: 1px solid var(--blue-5);
  border-radius: 16px;
  padding: 32px;
}
.final__title {
  text-align: center;
  font-size: clamp(1.5rem, 1.321rem + 0.76vw, 1.875rem);
  font-weight: 600;
  padding-bottom: 8px;
}
.final__subtitle {
  font-size: clamp(1.125rem, 1.065rem + 0.25vw, 1.25rem);
  padding-bottom: 32px;
}
.final__input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  padding-bottom: 10px;
}
.final__label {
  font-size: 16px;
  color: var(--neutral-2);
}
.final__input {
  border: 1px solid var(--neutral-4);
  border-radius: 100px;
  padding: 13px 16px;
  font-size: 16px;
  font-weight: 400;

  &::placeholder {
    color: var(--neutral-3);
  }
}
.final__buttons-group {
  display: flex;
  flex-direction: column;
  row-gap: 20px;
  width: 100%;
}
@media (width < 767px) {
  .final {
    padding-block: 92px;
  }
}

.error-message {
  color: #c0352a;
  margin-top: 10px;
  font-weight: 500;
}

/* спиннер */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
  margin-left: 10px;
  vertical-align: middle;
}

@keyframes spin { to { transform: rotate(360deg); } }