.form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form__field {
  position: relative;
  padding: 24px 0 18px;
}

.form__textarea {
  display: block;
  width: 100%;
  resize: none;
  padding: 12px;
  font-size: 16px;
  border-radius: 6px;
  transition: var(--animation);
}

.form__textarea:focus {
  outline: 0;
  box-shadow: var(--shadow);
}

.form__field-label {
  display: block;
  position: absolute;
  top: 38px;
  left: 12px;
  color: var(--color-grey);
  z-index: 2;
  transition: var(--animation);
}

.form__field-input::placeholder {
  visibility: hidden;
}

.form__field-input:not(:placeholder-shown) + .form__field-label,
.form__field-input:focus + .form__field-label {
  top: 0;
  left: 0;
  font-size: 16px;
  color: var(--color-black);
}

.form__field-error {
  color: var(--color-red);
  opacity: 0;
  visibility: hidden;
  font-size: 14px;
  position: absolute;
  left: 0;
  bottom: 0;
  transition: var(--animation);
}

.form__field.error .form__field-error {
  opacity: 1;
  visibility: visible;
}

.form .btn {
  margin-top: 14px;
  align-self: center;
}

@media only screen and (max-width: 500px) {
  .form .btn {
    align-self: stretch;
  }
}