/* ==========================================================================
   Секция: Калькулятор (.calculator) — Premium Glass Style
   Полностью стилизована в духе .advantages
   ========================================================================== */

.calculator {
  width: 100%;
  background-color: #f8fafc;
  padding: 100px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.calculator__container {
  width: 90%;
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Верхняя часть секции: бейдж + заголовок */
.calculator__header-wrapper {
  text-align: center;
  margin-bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.calculator__badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: #249AF3;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.calculator__title {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  color: #0f172a;
  margin: 0;
}

/* Сетка из двух карточек */
.calculator__grid {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

/* Карточка в стиле advantages */
.calculator__card {
  position: relative;
  overflow: hidden;

  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);

  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 20px;

  padding: 34px;

  display: flex;
  flex-direction: column;
  align-items: flex-start;

  transition:
    transform 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.calculator__card:hover {
  transform: translateY(-5px);
  border-color: #bfdbfe;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

/* Декоративный номер */
.calculator__number {
  position: absolute;
  top: 22px;
  right: 26px;

  font-size: 42px;
  font-weight: 800;
  line-height: 1;

  color: #e8eef8;
  letter-spacing: -1px;

  pointer-events: none;
}

/* Иконка */
.calculator__icon-box {
  width: 46px;
  height: 46px;

  background: #f1f5f9;

  border-radius: 14px;

  display: flex;
  align-items: center;
  justify-content: center;

  margin-bottom: 22px;

  transition: background 0.3s ease;
}

.calculator__card:hover .calculator__icon-box {
  background: #eff6ff;
}

.calculator__icon-box svg {
  color: #64748b;
  transition: color 0.3s ease;
}

.calculator__card:hover .calculator__icon-box svg {
  color: #249AF3;
}

/* Заголовок карточки */
.calculator__card-title {
  font-size: 20px;
  font-weight: 700;

  color: #0f172a;

  line-height: 1.3;

  margin: 0 0 20px 0;
}

/* ==========================================================================
   Форма внутри карточки (сброс лишних обёрток)
   ========================================================================== */

.calculator__form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  /* убираем прежний фон, тени и фиксированную ширину */
  background: none;
  padding: 0;
  border-radius: 0;
  box-shadow: none;
}

.calculator__row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

/* Подписи полей */
.calculator__label {
  font-size: 15px;
  font-weight: 500;
  color: #1e293b;
  opacity: 0.85;
}

/* Поля ввода / селекты – стеклянный стиль */
.calculator__input {
  width: 100%;
  height: 46px;
  border-radius: 12px;
  border: 1px solid rgba(203, 213, 225, 0.9);
  font-size: 15px;
  font-family: inherit;
  padding: 0 16px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-sizing: border-box;
  color: #0f172a;
}

.calculator__input:focus {
  border-color: #249AF3;
  box-shadow: 0 0 0 3px rgba(36, 154, 243, 0.15);
  background: rgba(255, 255, 255, 0.9);
}

/* Селект */
select.calculator__input {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23888' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px;
  cursor: pointer;
}

/* Сообщение об ошибке */
.calculator__error {
  font-size: 14px;
  color: #d93025;
  font-weight: 400;
  display: none;
}

/* Кнопка «Применить» */
.calculator__btn-wrapper {
  margin-top: 8px;
  display: flex;
  justify-content: flex-start;
}

/* ==========================================================================
   Блок с результатом
   ========================================================================== */

.calculator__result {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.calculator__result-box {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 16px;
  padding: 24px;
  font-size: 16px;
  color: #334155;
  line-height: 1.6;
  min-height: 120px;
}

/* ==========================================================================
   Нижняя часть секции (призыв к действию)
   ========================================================================== */

.calculator__footer {
  margin-top: 70px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.calculator__footer-text {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 0.2px;
  line-height: 1.15;
  color: #0f172a;
  margin: 0;
}

.calculator__footer-btn-wrapper {
  display: flex;
  justify-content: center;
}

@media (max-width: 768px) {
  .calculator {
    padding: 60px 0;
  }

  .calculator__title {
    font-size: 28px;
  }

  .calculator__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .calculator__card {
    padding: 24px 16px;
  }

  .calculator__number {
    font-size: 36px;
    top: 16px;
    right: 20px;
  }

  .calculator__card-title {
    font-size: 18px;
  }

  .calculator__input {
    height: 42px;
    font-size: 14px;
  }

  .calculator__btn-wrapper {
    justify-content: center;
  }

  .calculator__footer {
    margin-top: 40px;
  }

  .calculator__footer-text {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .calculator__title {
    font-size: 24px;
  }

  .calculator__card {
    padding: 20px 12px;
  }

  .calculator__number {
    font-size: 30px;
    top: 12px;
    right: 14px;
  }

  .calculator__card-title {
    font-size: 17px;
  }

  .calculator__footer-text {
    font-size: 20px;
  }
}