_form.scss

.form_field {
  margin: 0.5rem 0;
  border-radius: 0.25rem;
  background: rgba($faint,0.25);
  position: relative;

  label {
    font-size: ms(-2);
    font-weight: 600;
    color: $black;
    opacity: 0.75;
    padding: 0.5rem 0.5rem 0;
    display: block
  }

  input[type="text"], input[type="number"], input[type="tel"], input[type="email"], input[type="password"], textarea {
    border: 0;
    background: transparent;
    font-size: ms(0);
    font-weight: 400;
    font-family: $sans;
    line-height: ms(0) * 1.3;
    width: 100%;
    opacity: 0.75;
    padding: 0.5rem;
    margin-top: -0.25rem;
    &:focus {
      opacity: 1;
    }
  }

  input[type="range"] {
    -webkit-appearance: none;
    width: calc(100% - 1rem);
    height: 0.5rem;
    border-radius: 0.5rem;
    background: rgba($faint,0.5);
    outline: none;
    padding: 0;
    margin: 0.5rem;

    &::-webkit-slider-thumb {
      appearance: none;
      width: 1rem;
      height: 1rem;
      border-radius: 50%;
      background: $grey;
      cursor: pointer;
      transition: background .15s ease;

      &:hover {
        background: $black;
      }
    }

    &:active::-webkit-slider-thumb {
      background-color: $blue;
    }
  }

  textarea {
    resize: none;
    font-family: $mono;
    font-size: ms(-1);

    &.-sm {
      height: 3.5rem;
    }

    &.-md {
      height: 4.75rem;
    }

    &.-lg {
      height: 8rem;
    }
  }
}

input.form_field_amount[type='number'] {
  font-size: ms(8);
  line-height: ms(8) * 1.1;
  font-weight: 200;
  text-align: center;
  -webkit-appearance: none;

  &::-webkit-inner-spin-button, &::-webkit-outer-spin-button {
    opacity: 1;
    -webkit-appearance: none;
  }
}

nav.form-field_nav {
  padding: 0 0.5rem 0.5rem;
  display: flex;
  justify-content: flex-end;
  button {
    margin-left: 0.5rem;
  }
}

nav.range-nav {
  width: 100%;
  padding: 0 0.5rem 0.5rem;
  display: flex;
  justify-content: space-between;
  font-size: ms(-2);
  font-weight: 600;
  text-transform: uppercase;

  .range-nav_label {
    width: 4rem;
    color: $grey;
    &:last-child {
      text-align: right;
    }
  }

  .range-nav_value {
    display: block;
    width: 8rem;
    text-align: center;
    color: $black
  }
}