/* ==========================================================================
   ir/message バックナンバー機能 専用CSS
   ========================================================================== */

.message-stage,
.message-pic-stage {
  position: relative;
}

/* ---- バックナンバー選択 ---- */
.message-archive {
  max-width: 320px;
  margin: 2.4rem auto 0;
  text-align: center;
}

.message-archive__label {
  display: block;
  margin-bottom: .6rem;
  color: #051f66;
  font-size: .9rem;
  letter-spacing: .1em;
}

.message-archive__select {
  display: block;
  width: 100%;
  box-sizing: border-box;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: 2px solid #051f66;
  border-radius: 0;
  background-color: #fff;
  background-image: url(../img/svg/icn_arw_tgl_b.svg);
  background-repeat: no-repeat;
  background-position: top 54% right 16px;
  background-size: 18px;
  color: #051f66;
  font-size: 1rem;
  padding: .7rem 40px .7rem 16px;
  box-shadow: 0 2px 2px rgba(0, 0, 0, .1);
  cursor: pointer;
  transition: all .3s ease;
}

.message-archive__select:hover,
.message-archive__select:focus {
  box-shadow: 0 2px 8px rgba(0, 0, 0, .3);
}

.message-archive__select:disabled {
  opacity: .5;
  cursor: default;
}

/* ---- 切り替えアニメーション オーバーレイ ---- */
.message-transition {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, .94);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .3s ease;
  z-index: 5;
}

.message-transition.is-visible {
  opacity: 1;
  visibility: visible;
}

.message-transition__spinner {
  width: 44px;
  height: 44px;
  border: 4px solid #d0d4df;
  border-top-color: #051f66;
  border-radius: 50%;
  opacity: 0;
  transition: opacity .3s ease;
  animation: message-spin 1s linear infinite;
}

.message-transition__spinner.is-visible {
  opacity: 1;
}

.message-transition__yearmonth {
  position: absolute;
  color: #051f66;
  font-size: 1.8rem;
  letter-spacing: .1em;
  opacity: 0;
  transform: scale(.9);
  transition: opacity .3s ease, transform .3s ease;
}

.message-transition__yearmonth.is-visible {
  opacity: 1;
  transform: scale(1);
}

@keyframes message-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@media only screen and (max-width:860px) {
  .message-transition__yearmonth {
    font-size: 1.4rem;
  }
}