/* =============================================================================
   home-promo.css — トップのバナー欄（HERO の直下のカルーセル）
   マークアップ: template-parts/home-promo.php ／ 設定: inc/home-promo.php ／ 動き: js/features/home-promo.js
   地はページの地（トップは濃紺）をそのまま使い、写真の上に文字を重ねた横長カードを並べる。
   PC は2枚ずつ、スマホは1枚＋次の端が覗く。枚数が1枚なら横長の1枚だけ（矢印・点なし）。
   並べ方は CSS の scroll-snap。JS が無くても指で横に送れる。
   ========================================================================== */

.promo {
  position: relative;
  padding: clamp(56px, 6vw, 88px) 0 clamp(32px, 3.5vw, 48px);
  color: var(--mute);
}
/* 次のプロローグは「全画面の HERO の直後」前提で上に clamp(80px,11vw,150px) の余白を持つ
   （pages/home.css）。その間にこの欄が入ると余白が二重になり、点から次の写真まで 370px ほど空いた。
   この欄があるときだけ、プロローグの上の余白を消す（欄が無いトップは従来どおり）。 */
.promo + .prologue { padding-top: 0 !important; }
/* JS が送る物の無い時に hidden を付ける（display:flex の指定に負けないように） */
.promo [hidden] { display: none !important; }
.promo__inner {
  max-width: 1600px;
  margin: 0 auto;
  padding-inline: clamp(24px, 5vw, 80px);
}

/* ---- 見出し行: PICK UP ─────── 01 / 03  ‹ › ---------------------------- */
.promo__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(20px, 2.2vw, 32px);
}
.promo__kicker {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0;
  font-family: var(--en-serif);
  font-size: 12px;
  letter-spacing: .4em;
  text-transform: uppercase;
  color: var(--gold);
}
.promo__kicker .line {
  display: block;
  width: clamp(32px, 4vw, 56px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.promo__nav { display: flex; align-items: center; gap: 10px; }
.promo__count {
  margin: 0 10px 0 0;
  font-family: var(--en-serif);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--caption);
}
.promo__count-cur { color: var(--gold); }
.promo__count-sep { margin: 0 .5em; }
.promo__arrow {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: .5px solid rgba(232, 226, 212, .35);
  border-radius: 50%;
  background: none;
  color: var(--mute);
  cursor: pointer;
  transition: border-color .3s var(--ease), color .3s var(--ease), background .3s var(--ease);
}
.promo__arrow span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
}
.promo__arrow--prev span { transform: translate(-30%, -50%) rotate(-135deg); }
.promo__arrow--next span { transform: translate(-70%, -50%) rotate(45deg); }
.promo__arrow:hover,
.promo__arrow:focus-visible { border-color: var(--gold); color: var(--gold); background: rgba(223, 192, 122, .06); }

/* ---- 並び ------------------------------------------------------------- */
.promo__viewport { position: relative; }
.promo__track {
  --promo-gap: clamp(16px, 2vw, 28px);
  display: flex;
  gap: var(--promo-gap);
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}
.promo__track::-webkit-scrollbar { display: none; }
.promo__item {
  flex: 0 0 calc((100% - var(--promo-gap)) / 2);
  scroll-snap-align: start;
  min-width: 0;
}
.promo--single .promo__item { flex-basis: 100%; }

/* ---- カード: 写真の上に文字 ------------------------------------------- */
.promo__card {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  color: #fff;
  text-decoration: none;
  border: .5px solid rgba(223, 192, 122, .3);
  background: #141a26;
  isolation: isolate;
}
.promo--single .promo__card { aspect-ratio: 21 / 8; }
.promo__media { position: absolute; inset: 0; z-index: -1; }
.promo__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 1.4s var(--ease);
}
.promo__card:hover .promo__img,
.promo__card:focus-visible .promo__img { transform: scale(1.07); }
/* 下から暗く: 文字を読ませる幕 */
.promo__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(14, 17, 22, .05) 15%, rgba(14, 17, 22, .6) 48%, rgba(14, 17, 22, .92) 100%),
    linear-gradient(90deg, rgba(14, 17, 22, .5) 0%, rgba(14, 17, 22, 0) 60%);
}
/* 写真が未設定の枠: 濃紺に金の細い罫だけで組む */
.promo__media--none {
  background:
    radial-gradient(ellipse at 80% 20%, rgba(223, 192, 122, .12), transparent 60%),
    linear-gradient(135deg, #1c2a44 0%, #10151f 100%);
}
/* 内側の金の罫（カードの縁から少し内側）。触れると濃くなる */
.promo__card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: .5px solid rgba(223, 192, 122, .22);
  pointer-events: none;
  transition: border-color .6s var(--ease), inset .6s var(--ease);
}
.promo__card:hover::after,
.promo__card:focus-visible::after { border-color: rgba(223, 192, 122, .6); inset: 14px; }
.promo__card:focus-visible { outline: 1px solid var(--gold); outline-offset: 3px; }

.promo__body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: clamp(22px, 2.6vw, 40px) clamp(24px, 2.8vw, 44px);
  text-shadow: 0 1px 12px rgba(0, 0, 0, .35);
}
.promo__en {
  margin: 0 0 10px;
  font-family: var(--en-serif);
  font-size: 11px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--gold);
}
.promo__title {
  margin: 0;
  font-family: var(--serif-display);
  font-weight: 500;
  font-size: clamp(20px, 1.9vw, 30px);
  letter-spacing: .12em;
  line-height: 1.5;
  color: #fff;
}
.promo__desc {
  margin: 10px 0 0;
  max-width: 40em;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .06em;
  line-height: 1.9;
  color: rgba(232, 226, 212, .88);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.promo__more {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: clamp(14px, 1.4vw, 20px);
  padding-bottom: 6px;
  border-bottom: .5px solid rgba(232, 226, 212, .6);
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: .24em;
  color: #fff;
  transition: color .4s var(--ease), border-color .4s var(--ease), letter-spacing .4s var(--ease);
}
.promo__more .arrow {
  position: relative;
  display: block;
  width: 24px;
  height: 1px;
  background: currentColor;
  transition: width .4s var(--ease);
}
/* 矢じり: 本体と同じ高さに置き、右端を支点に上へ振る（右端が本体の右端にぴたりと重なる）。
   top をずらすと支点ごと浮いて、先が本体から離れて見える */
.promo__more .arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 7px;
  height: 1px;
  background: currentColor;
  transform: rotate(35deg);
  transform-origin: right center;
}
.promo__card:hover .promo__more,
.promo__card:focus-visible .promo__more { color: var(--gold); border-color: var(--gold); letter-spacing: .3em; }
.promo__card:hover .promo__more .arrow,
.promo__card:focus-visible .promo__more .arrow { width: 36px; }

/* ---- 点 --------------------------------------------------------------- */
.promo__dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: clamp(20px, 2.2vw, 28px);
}
.promo__dot {
  width: 22px;
  height: 20px;           /* 押せる高さ。見える線は ::before の 1px */
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  position: relative;
  transition: width .5s var(--ease);
}
.promo__dot::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(232, 226, 212, .35);
  transition: background .4s var(--ease);
}
.promo__dot.is-active { width: 44px; }
.promo__dot.is-active::before { background: var(--gold); }

/* ---- 狭い画面 ---------------------------------------------------------- */
@media (max-width: 900px) {
  .promo__item { flex-basis: 86%; }
  .promo--single .promo__item { flex-basis: 100%; }
  .promo__card,
  .promo--single .promo__card { aspect-ratio: 4 / 3; }
  .promo__count { display: none; }
}
@media (max-width: 767px) {
  .promo { padding: 48px 0 28px; }
  .promo__inner { padding-inline: 20px; }
  .promo__kicker { font-size: 11px; letter-spacing: .32em; }
  .promo__arrow { width: 38px; height: 38px; }
  .promo__title { font-size: 19px; letter-spacing: .08em; }
  .promo__desc { font-size: 12px; line-height: 1.8; }
  .promo__card::after { inset: 8px; }
  /* 幅 290px 前後では 4:3 だと「2行の見出し＋2行の説明」が写真の上端からはみ出す → 正方形に */
  .promo__card,
  .promo--single .promo__card { aspect-ratio: 1 / 1; }
  .promo__body { padding: 20px 22px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .promo__track { scroll-behavior: auto; }
  .promo__img,
  .promo__card::after,
  .promo__more,
  .promo__more .arrow { transition: none; }
}