@charset "UTF-8";

.form-page {
  min-height: calc(100vh - 76px);
  padding: 0 20px;
  background: #f5fafc;
}

.form-page .section {
  padding: 48px 0 64px;
}

.form-container {
  width: min(100%, 840px);
  margin: 0 auto;
}

.form-container h1 {
  margin: 0 0 14px;
  color: #234e72;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.4;
  text-align: center;
}

.form-lead {
  margin: 0 0 32px;
  color: #496277;
  text-align: center;
}

.form-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 0;
  margin: 0 0 30px;
  list-style: none;
}

.form-step,
.form-steps li {
  padding: 10px 8px;
  border-radius: 6px;
  background: #dceaf3;
  color: #5a7284;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.form-step.is-current,
.form-step.is-complete,
.form-steps li.is-active {
  background: #4c9ac4;
  color: #fff;
}

.nippoai-form,
.confirm-list,
.complete-card {
  padding: 36px;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(50, 91, 119, .12);
}

.form-field + .form-field {
  margin-top: 24px;
}

.form-field label,
.form-field legend {
  display: block;
  margin: 0 0 9px;
  color: #234e72;
  font-weight: 700;
}

.form-field fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.required,
.optional {
  display: inline-block;
  margin-left: 7px;
  padding: 2px 7px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 700;
  vertical-align: 1px;
}

.required {
  background: #e86e6e;
  color: #fff;
}

.optional {
  background: #e7eef2;
  color: #536b7b;
}

.nippoai-form input[type="text"],
.nippoai-form input[type="email"],
.nippoai-form input[type="tel"],
.nippoai-form input[type="number"],
.nippoai-form textarea {
  box-sizing: border-box;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #b9ceda;
  border-radius: 6px;
  background: #fff;
  color: #263b4a;
  font: inherit;
}

.nippoai-form textarea {
  min-height: 150px;
  resize: vertical;
}

.nippoai-form input:focus,
.nippoai-form textarea:focus {
  outline: 3px solid rgba(76, 154, 196, .23);
  border-color: #4c9ac4;
}

.radio-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}

.radio-list label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  color: #263b4a;
  font-weight: 400;
}

.account-note {
  margin: 14px 0 0;
  padding: 15px 18px;
  border-radius: 6px;
  background: #f2f8fb;
  color: #496277;
  font-size: 14px;
  line-height: 1.8;
}

.account-note ol {
  margin: 8px 0 0;
  padding-left: 1.5em;
}

.form-error {
  margin: 0 0 24px;
  padding: 14px 17px;
  border-radius: 6px;
  background: #fff0f0;
  color: #b33737;
  line-height: 1.7;
  border: 1px solid #f3c2c2;
  font-weight: 700;
}

.form-error ul {
  margin: 0;
  padding-left: 1.35em;
}

.honeypot,
.nippoai-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-actions,
.nippoai-form-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 34px;
}

.form-actions .button,
.nippoai-form-actions .button {
  min-width: 190px;
  cursor: pointer;
}

.button.button-back {
  border: 1px solid #91aab9;
  background: #fff;
  color: #496277;
}

.button.button-back:hover {
  background: #edf4f7;
}

.field-error {
  margin: 8px 0 0;
  color: #b33737;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.6;
}

.form-field.has-error > label,
.form-field.has-error > legend {
  color: #a42f2f;
}

.form-field.has-error > input,
.form-field.has-error > textarea {
  border: 2px solid #d95a5a;
  background: #fff0f0;
}

fieldset.form-field.has-error {
  padding: 16px;
  border: 2px solid #d95a5a;
  border-radius: 8px;
  background: #fff0f0;
}
/* ブラウザ側の入力エラーも分かりやすく表示 */
.nippoai-form input:user-invalid,
.nippoai-form textarea:user-invalid {
  border: 2px solid #d95a5a;
  background: #fff0f0;
}

/* ラジオボタン未選択時 */
fieldset.form-field:has(input[type="radio"]:user-invalid) {
  padding: 16px;
  border: 2px solid #d95a5a;
  border-radius: 8px;
  background: #fff0f0;
}

.confirm-list {
  margin: 0;
}

.confirm-list > div {
  display: grid;
  grid-template-columns: minmax(180px, 30%) 1fr;
  border-bottom: 1px solid #dbe7ed;
}

.confirm-list > div:first-child {
  border-top: 1px solid #dbe7ed;
}

.confirm-list dt,
.confirm-list dd {
  margin: 0;
  padding: 15px 18px;
  line-height: 1.7;
}

.confirm-list dt {
  background: #f2f8fb;
  color: #234e72;
  font-weight: 700;
}

.complete-card {
  text-align: center;
}

.complete-card p {
  color: #496277;
  line-height: 1.9;
}

@media screen and (max-width: 640px) {
  .form-page {
    padding: 0 15px;
  }

  .form-page .section {
    padding: 36px 0 48px;
  }

  .form-container h1 {
    font-size: 27px;
  }

  .form-steps {
    gap: 5px;
  }

  .form-step,
  .form-steps li {
    padding: 9px 4px;
    font-size: 12px;
  }

  .nippoai-form,
  .confirm-list,
  .complete-card {
    padding: 24px 18px;
  }

  .radio-list {
    display: grid;
    gap: 10px;
  }

  .form-actions,
  .nippoai-form-actions {
    flex-direction: column-reverse;
    gap: 10px;
  }

  .form-actions .button,
  .nippoai-form-actions .button {
    width: 100%;
  }

  .confirm-list > div {
    grid-template-columns: 1fr;
  }

  .confirm-list dt,
  .confirm-list dd {
    padding: 12px 14px;
  }

  .confirm-list dd {
    padding-top: 0;
  }
}