/* ==========================================================================
   pd-gallery.css — 商品LP メイン画像ギャラリー
   PC: ホバーで左右矢印 / スマホ: スワイプ
   ========================================================================== */

.pd-gallery__main {
  position: relative;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

.pd-gallery__main img {
  transition: opacity 0.18s ease;
}

.pd-gallery__main.is-swiping img {
  opacity: 0.75;
}

/* 左右矢印ボタン (PC ホバーで出現) */
.pd-gallery__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--c-line, #e6e3dc);
  border-radius: 50%;
  color: var(--c-primary-ink, #8b5656);
  cursor: pointer;
  z-index: 5;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.25s ease,
    background 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  -webkit-tap-highlight-color: transparent;
}

.pd-gallery__nav:hover {
  background: #fff;
  color: var(--c-primary, #c78b8b);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.14);
}

.pd-gallery__nav:active {
  transform: translateY(-50%) scale(0.94);
}

.pd-gallery__nav:focus-visible {
  outline: 2px solid var(--c-primary, #c78b8b);
  outline-offset: 2px;
}

.pd-gallery__nav--prev {
  left: 12px;
}

.pd-gallery__nav--next {
  right: 12px;
}

.pd-gallery__nav svg {
  width: 22px;
  height: 22px;
  display: block;
}

/* PC: メイン画像ホバーで矢印フェードイン */
@media (hover: hover) and (pointer: fine) {
  .pd-gallery__main:hover .pd-gallery__nav,
  .pd-gallery__main:focus-within .pd-gallery__nav {
    opacity: 1;
    pointer-events: auto;
  }
}

/* スマホ・タブレット: 矢印非表示 (スワイプで操作) */
@media (max-width: 767px), (hover: none) {
  .pd-gallery__nav {
    display: none;
  }
}

/* スワイプヒント (スマホのみ初回数秒表示) */
.pd-gallery__hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 12px;
  background: rgba(26, 26, 32, 0.7);
  color: #fff;
  font-size: 11px;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0;
  animation: pdGalleryHint 3.5s ease-out 0.6s forwards;
  z-index: 4;
}

@keyframes pdGalleryHint {
  0% { opacity: 0; }
  15%, 70% { opacity: 1; }
  100% { opacity: 0; }
}

@media (min-width: 768px), (hover: hover) {
  .pd-gallery__hint {
    display: none;
  }
}

/* 現在位置ドット (任意、画像数が 2 以上のときのみ表示) */
.pd-gallery__dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 3;
  pointer-events: none;
}

.pd-gallery__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  transition: background 0.2s ease, width 0.2s ease;
  border: 1px solid rgba(26, 26, 32, 0.15);
}

.pd-gallery__dot.is-active {
  background: var(--c-primary, #c78b8b);
  width: 18px;
  border-radius: 999px;
}

@media (min-width: 768px) {
  .pd-gallery__dots {
    bottom: 16px;
  }
  .pd-gallery__dot {
    width: 7px;
    height: 7px;
  }
  .pd-gallery__dot.is-active {
    width: 22px;
  }
}