/* ========== Slider: Base ========== */
.slider-wrap{
  --gap: 12px;        /* data-gapで上書き可 */
  --cols: 2.5;        /* 初期=SP 2.5枚（PCはJSで3.5に切替） */
  --nav-y: 50%;       /* 矢印の縦位置（JSが .thumb の高さからpxで上書き） */
  position: relative;
  width: 100%;
}

.slider{
  display: flex;
  gap: var(--gap);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;  /* 軽めスナップ */
  scroll-behavior: auto;          /* JSで“ピタ止め” */
  touch-action: pan-x;
  overscroll-behavior-x: contain;
  will-change: scroll-position;
  contain: layout paint;
  padding: 0;
  position: relative;
  z-index: 1;
}
.slider::-webkit-scrollbar{ display:none; }
.slider{ scrollbar-width: none; }

/* ========== Card ========== */
.slider > a{
  flex: 0 0 calc((100% - (var(--cols) - 1)*var(--gap)) / var(--cols));
  max-width: calc((100% - (var(--cols) - 1)*var(--gap)) / var(--cols));
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  text-decoration: none;
  color: inherit;
  background: #fff;      /* 白ベタ */
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
}

/* ========== Thumb（比率ボックスで画像を固定） ========== */
.slider > a .thumb{
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 1/1;     /* 4/5 などに変更可 */
  overflow: hidden;
  background: #fff;
}

/* モール側CSSに勝つ“絶対配置100%×100%”固定 */
.slider > a .thumb > img{
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  object-position: center !important;
  display: block !important;
  margin: 0 !important;
  border: 0 !important;
  pointer-events: none !important;  /* ← クリックを確実に<a>に通す */
}

/* ========== Caption（alt表示） ========== */
.slider > a .caption{
  display: block;
  width: 100%;
  background: #fff;
  font-size: 0.8rem;
  color: #444;
  line-height: 1.5;
  text-align: left;      /* ← 左寄せ */
  padding: 6px 8px;      /* 左寄せに合わせて余白 */
  word-break: keep-all;
  overflow-wrap: break-word;
  border-top: 1px solid #eee;
  box-sizing: border-box;
  min-height: 2.2em;     /* 2行相当で高さ揃え */
}

/* ========== Arrows ========== */
.slider-nav{
  position: absolute;
  top: var(--nav-y, 50%);     /* ★ 画像枠の中央(px)をJSで反映 */
  transform: translateY(-50%);
  width: 34px; height: 34px;
  border: none;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  line-height: 34px;
  text-align: center;
  font-size: 22px;
  padding: 0;
  user-select: none;
  z-index: 10;                /* 前面 */
  pointer-events: auto;
  box-shadow: none;
  transition: opacity .15s ease;
}
.slider-prev{ left: 6px; }
.slider-next{ right: 6px; }

/* 端ではボタンを完全に隠す */
.slider-wrap.is-start .slider-prev,
.slider-wrap.is-end   .slider-next{
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce){
  .slider-nav{ transition: none; }
}