/* マイページ「メールアドレス変更」UI（タスクA② 2026-07-17）。
   app.css は飯塚さんデザイン編集領域のため、既存の追加 CSS と同様に別ファイルで配信する。 */

.mypage-mail-editor {
  display: grid;
  gap: 0;
}

.mypage-mail-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mypage-mail-row input {
  flex: 1 1 auto;
  min-width: 0;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.mypage-mail-change-button {
  width: auto;
  height: 51px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--color-brand);
  border-radius: 16px;
  background: var(--color-brand);
  color: var(--color-on-brand, #fff);
  padding: 0 10px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: padding 0.2s ease, filter 0.18s ease, opacity 0.18s ease, transform 0.18s ease;
}

.mypage-mail-change-button.is-editing {
  padding-right: 14px;
  padding-left: 14px;
}

.mypage-mail-change-button:active:not(:disabled) {
  filter: brightness(0.94);
  transform: scale(0.98);
}

.mypage-mail-change-button:disabled {
  cursor: default;
}

.mypage-mail-change-symbol {
  width: 14px;
  height: 16px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  position: relative;
  color: inherit;
}

.mypage-mail-change-icon,
.mypage-mail-cancel-icon {
  width: 14px;
  height: 16px;
  grid-area: 1 / 1;
  transition: opacity 0.16s ease, transform 0.2s ease;
}

.mypage-mail-change-icon svg {
  width: 100%;
  height: 100%;
  display: block;
  fill: currentColor;
}

.mypage-mail-cancel-icon {
  display: grid;
  place-items: center;
  opacity: 0;
  transform: rotate(-45deg) scale(0.72);
}

.mypage-mail-cancel-icon::before,
.mypage-mail-cancel-icon::after {
  width: 14px;
  height: 2px;
  grid-area: 1 / 1;
  border-radius: 999px;
  background: currentColor;
  content: "";
}

.mypage-mail-cancel-icon::before {
  transform: rotate(45deg);
}

.mypage-mail-cancel-icon::after {
  transform: rotate(-45deg);
}

.mypage-mail-change-label {
  width: 32px;
  height: 1em;
  display: grid;
  place-items: center;
  position: relative;
  transition: width 0.2s ease;
}

.mypage-mail-change-button.is-editing .mypage-mail-change-label {
  width: 68px;
}

.mypage-mail-change-label > span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transition: opacity 0.16s ease, transform 0.2s ease;
}

.mypage-mail-change-label .is-cancel {
  opacity: 0;
  transform: translateY(4px);
}

.mypage-mail-change-button.is-editing .mypage-mail-change-icon,
.mypage-mail-change-button.is-editing .mypage-mail-change-label .is-change {
  opacity: 0;
  transform: translateY(-4px) scale(0.82);
}

.mypage-mail-change-button.is-editing .mypage-mail-cancel-icon,
.mypage-mail-change-button.is-editing .mypage-mail-change-label .is-cancel {
  opacity: 1;
  transform: translateY(0) rotate(0) scale(1);
}

.mypage-mail-password-field[hidden] {
  display: none;
}

.mypage-mail-password-field {
  margin-top: var(--mail-form-gap, 20px);
}

.mypage-mail-password-field.is-opening {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transition: max-height 0.24s ease, margin-top 0.24s ease,
    opacity 0.18s ease, transform 0.24s ease;
}

.mypage-mail-password-field.is-opening.is-visible {
  max-height: var(--mail-password-height, 160px);
  margin-top: var(--mail-form-gap, 20px);
  opacity: 1;
  transform: translateY(0);
}

/* .mypage-help の下マージン 52px は末尾の注記用。パスワード欄内の補足には効かせない。 */
.mypage-mail-password-help {
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  .mypage-mail-row input,
  .mypage-mail-change-button,
  .mypage-mail-change-icon,
  .mypage-mail-cancel-icon,
  .mypage-mail-change-label,
  .mypage-mail-change-label > span,
  .mypage-mail-password-field.is-opening {
    transition: none;
  }
}