h1 {
  background-color: var(--sand-100);
  padding: var(--default-padding) max(var(--default-padding), calc(calc(100vw - var(--max-width)) / 2));
}

#open-form {
  text-transform: none;
  text-align: left;
  font-family: "Montserrat", sans-serif;
  font-size: 16px;
  color: var(--marine-500);
  background-color: transparent;
  border: 1px solid var(--sand-500);
  position: relative;
  padding: var(--default-padding) var(--half-padding);
}

#open-form:after {
  content: ">";
  position: absolute;
  right: var(--default-padding);
  transform: scaleX(2) rotate(90deg);
  transition: .2s transform;
}

#open-form + form > div {
  border-top: 0px;
}

#open-form.visible:after {
  transform: scaleX(2) rotate(-90deg);
}

form {
  max-height: 0;
  overflow: hidden;
  transition: 1s max-height;
}

form.visible {
  max-height: 1500px;
}

form > div {
  border: 1px solid var(--sand-500);
}

form fieldset {
  border: none;
  padding: var(--half-padding);
}

form fieldset legend {
  margin-top: var(--half-padding);
  font-size: 16px;
  border-bottom: 1px solid var(--sand-100);
  padding-bottom: 5px;
  width: 100%;
}

form legend span {
  background-color: var(--sand-500);
  border-radius: 50%;
  display: inline-block;
  height: 25px;
  width: 25px;
  line-height: 25px;
  text-align: center;
}

.amount-choices {
  display: flex;
  gap: var(--half-padding);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--half-padding);
}

.amount-choice input {
  display: none;
}

.amount-choice span {
  display: inline-block;
  border: 1px solid var(--sand-500);
  padding: var(--half-padding);
  width: 140px;
  text-align: center;
}

.amount-choice input:checked + span {
  background-color: var(--sand-500);
}

.amount-other {
  max-height: 0;
  overflow: hidden;
  transition: .5s max-height;
}

.amount-other.visible {
  max-height: 70px;
}

fieldset:nth-child(3) {
  max-height: 0;
  overflow: hidden;
  transition: 1s max-height;
  padding: 0;
}
fieldset:nth-child(3) legend {
  opacity: 0;
}

fieldset:nth-child(3).visible {
  max-height: 1300px;
  padding: var(--half-padding);
}
fieldset:nth-child(3).visible legend {
  opacity: 1;
}

form label {
  margin-top: var(--half-padding);
  display: block;
}

input, textarea, select {
  width: 100%;
}

.consents {
  position: relative;
}

.consents label {
  padding-left: var(--default-padding);
  display: inline-block;
}
.consents input {
  position: absolute;
  left: 0;
  width: min-content;
  top: 50%;
  transform: translateY(-50%);
}

input[type="submit"] {
  margin-top: var(--default-padding);
}

fieldset p {
  text-align: center;
}


@media (min-width: 600px) {
  section:nth-child(3) {
    display: flex;
    flex-direction: row-reverse;
    gap: var(--double-padding);
  }
  section:nth-child(3) > div {
    flex: calc(50% - var(--double-padding)) 0 0;
  }

  #open-form {
    width: 100%;
  }
  #open-form:after {
    display: none;
  }

  fieldset > div {
    display: inline-block;
    width: 100%;
  }

  fieldset > div.third {
    width: calc(100%/3);
    margin-right: var(--half-padding);
  }
  fieldset > div.third + div {
    width: calc(200%/3 - var(--half-padding) - 5px);
  }

  .cards {
    padding: 0;
  }
  form {
    max-height: unset;
  }
}

/* cards */
.cards {
  margin-bottom: var(--default-padding);
}
.cards ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--half-padding);
  padding: var(--default-padding);
}

.cards ul li {
  flex: calc(50% - var(--half-padding)) 1 1;
  margin-bottom: 0;
}

/* stripe payment */
#payment-form {
  border-bottom: none;
}

#payment-form button {
  margin-top: var(--default-padding);
}

#payment-form + p {
  text-align: center;
}

#payment-form button span {
  transition: .5s max-height;
  overflow: hidden;
  display: block;
  height: 1em;
}

#payment-form button .spinner,
#payment-form button:disabled .text {
  max-height: 0;
}

#payment-form button:disabled .spinner,
#payment-form button .text {
  max-height: 1em;
}

#payment-form > div {
  border: none;
}