/* ============================================================
   IKUSAGAMI  series.css
   ============================================================ */

:root {
  --shingen-bg:    #7a2020;
  --shingen-dark:  #551515;
  --shingen-text:  #ffffff;
  --masamune-bg:   #111110;
  --masamune-dark: #000000;
  --masamune-gold: #c8aa50;
  --masamune-text: #c8aa50;
  --kenshin-bg:    #4a2d6e;
  --kenshin-dark:  #311d4a;
  --kenshin-text:  #ffffff;
}

/* ============================================================
   NAV
   ============================================================ */

.lang-switcher__btn {
    font-family: "Noto Sans JP", sans-serif;
    font-size: .65rem;
    letter-spacing: .2em;
    padding: .3rem .75rem;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, .8);
    transition: all .25s;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.nav__logo-en { color: #fff; }
.nav__logo-ja { color: rgba(255,255,255,0.5); }
.hamburger__bar { background: rgba(255,255,255,0.85); }
.lang-switcher { border-color: rgba(255,255,255,0.3); }
.lang-switcher__btn { color: rgba(255,255,255,0.6); }
.lang-switcher__btn.is-active { background: rgba(255, 255, 255, 0.9); color: #000; }
.lang-switcher__btn.hover { background: rgba(255, 255, 255, 0.9); color: #000; }
.lang-switcher__sep { background: rgba(255,255,255,0.2); }




/* ============================================================
   (１) CATEGORY HERO ? 大見出し + フルブリード写真
       nav と重ねるため margin-top なし、高さはビューポートいっぱい
   ============================================================ */
.cat-hero {
  position: relative;
  width: 100%;
  height: 100svh;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  /* nav と重なる */
  margin-top: 0;
}

/* 背景写真 */
.cat-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.cat-hero__bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transform-origin: center;
  transition: transform 8s ease-out;
}
.cat-hero.is-loaded .cat-hero__bg-img { transform: scale(1.04); }

/* オーバーレイ ? 写真を暗くして文字を見やすく */
.cat-hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(8,8,6,0.58);
}
/* カテゴリー別 */
.cat-hero--shingen  .cat-hero__overlay { background: linear-gradient(135deg, rgba(20,12,12,0.50) 0%, rgba(8,6,6,0.55) 100%); }
.cat-hero--masamune .cat-hero__overlay { background: linear-gradient(135deg, rgba(4,4,4,0.80)    0%, rgba(8,8,6,0.55) 100%); }
.cat-hero--kenshin  .cat-hero__overlay { background: linear-gradient(135deg, rgba(35,18,55,0.72) 0%, rgba(8,6,8,0.55) 100%); }

/* 見出しコンテンツ */
.cat-hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  padding: 0 var(--gutter);
  animation: catFadeUp 1.1s ease 0.2s both;
}
@keyframes catFadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.cat-hero__label {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(0.56rem, 1vw, 0.66rem);
  letter-spacing: 0.65em;
  color: rgba(255,255,255,0.48);
}
.cat-hero__name-ja {
  font-family: var(--font-ja);
  font-weight: 900;
  font-size: clamp(3.5rem, 10vw, 8rem);
  letter-spacing: 0.2em;
  line-height: 1;
  color: #fff;
}
.cat-hero--shingen  .cat-hero__name-ja { text-shadow: 0 0 80px rgba(200,80,80,0.35); }
.cat-hero--masamune .cat-hero__name-ja { color: var(--masamune-gold); text-shadow: 0 0 80px rgba(200,170,80,0.25); }
.cat-hero--kenshin  .cat-hero__name-ja { text-shadow: 0 0 80px rgba(120,80,180,0.35); }


.cat-hero__name-en {
    display: block;
    font-size: 2em;
    margin-block-start: 0.67em;
    margin-block-end: 0.67em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    font-weight: bold;
    unicode-bidi: isolate;
    font-family: var(--font-ja);
    font-weight: 900;
    font-size: clamp(3.5rem, 10vw, 3rem);
    letter-spacing: 0.2em;
    line-height: 1.3;
    color: #fff;
}


h1.cat-hero__name-ja { 
  font-family: var(--font-en);
  font-size: clamp(0.78rem, 1.8vw, 1.05rem);
  letter-spacing: 0.5em;
  color: rgba(255,255,255,0.8);
}

.cat-hero__tagline {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(0.82rem, 3.5vw, 2rem);
  letter-spacing: 0.1em;
  color: rgba(255,255,255,1);
  margin-top: 0.4rem;
}

/* モチーフカラーバー（下端） */
.cat-hero__color-bar {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  z-index: 3;
}
/*.cat-hero--shingen  .cat-hero__color-bar { background: var(--shingen-bg); }
.cat-hero--masamune .cat-hero__color-bar { background: var(--masamune-gold); }
.cat-hero--kenshin  .cat-hero__color-bar { background: var(--kenshin-bg); }*/

/* スクロールインジケーター */
.cat-hero__scroll {
    position: absolute;
    bottom: 2.25rem;
    /* left: 50%; */
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .6rem;
    opacity: 0;
    animation: heroFadeIn 1s ease 2s forwards;
}
.cat-hero__scroll-text {
    font-family: var(--font-en);
    font-size: .55rem;
    letter-spacing: .55em;
    color: rgba(255, 255, 255, .35);
    writing-mode: vertical-rl;
}
.cat-hero__scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, .35), transparent);
    animation: scrollPulse 2.4s ease-in-out 2.5s infinite;
}
@keyframes catScrollPulse {
  0%,100% { opacity: 0.35; }
  50%      { opacity: 0.9; }
}

/* ============================================================
   (２) CATEGORY NAV ? 別URLへ遷移
   ============================================================ */
.cat-nav {
  position: sticky;
  top: var(--nav-h);
  z-index: 400;
  background: rgba(245,243,239,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.cat-nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: stretch;
  justify-content: center;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.cat-nav__inner::-webkit-scrollbar { display: none; }

.cat-nav__btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 1rem clamp(1.25rem, 3vw, 2.25rem);
  border: none;
  border-right: 1px solid var(--border);
  background: transparent;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
  position: relative;
  transition: background 0.25s;
  cursor: pointer;
}
.cat-nav__btn:last-child { border-right: none; }
.cat-nav__btn:hover { background: var(--bg-section); }

.cat-nav__btn::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: transparent;
  transition: background 0.25s;
}
.cat-nav__btn.is-active.nav--shingen::after  { background: var(--shingen-bg); }
.cat-nav__btn.is-active.nav--masamune::after { background: var(--masamune-gold); }
.cat-nav__btn.is-active.nav--kenshin::after  { background: var(--kenshin-bg); }
.cat-nav__btn.is-active::after               { background: var(--ink); }

.cat-nav__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  margin-bottom: 2px;
}
.cat-nav__btn.nav--shingen  .cat-nav__dot { background: var(--shingen-bg); }
.cat-nav__btn.nav--masamune .cat-nav__dot { background: var(--masamune-gold); }
.cat-nav__btn.nav--kenshin  .cat-nav__dot { background: var(--kenshin-bg); }

.cat-nav__btn-en {
  font-family: var(--font-en);
  font-size: clamp(0.78rem, 1.5vw, 0.92rem);
  letter-spacing: 0.28em;
  color: var(--ink-mid);
  line-height: 1;
  transition: color 0.25s;
}
.cat-nav__btn-ja {
  font-family: var(--font-ja);
  font-size: clamp(0.56rem, 1vw, 0.65rem);
  letter-spacing: 0.18em;
  color: var(--ink-light);
  line-height: 1;
}
.cat-nav__btn.is-active .cat-nav__btn-en,
.cat-nav__btn.is-active .cat-nav__btn-ja { color: var(--ink); }
.cat-nav__btn.is-active.nav--shingen  .cat-nav__btn-en { color: var(--shingen-bg); }
.cat-nav__btn.is-active.nav--masamune .cat-nav__btn-en { color: var(--masamune-bg); }
.cat-nav__btn.is-active.nav--kenshin  .cat-nav__btn-en { color: var(--kenshin-bg); }



.series_about{
  padding: clamp(3.5rem, 7vw, 6rem) var(--gutter);
  background: #1c1c1a;;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.series_about h2{
  font-family: var(--font-ja);
  font-weight: 200;
  font-size: clamp(1.6rem, 2.8vw, 1.85rem);
  letter-spacing: 0.15em;
  line-height: 1.45;
  color: #fff;
  margin-top: 3.5rem;
  margin-bottom: 1.3rem;
}
.series_about p{
  font-family: var(--font-ja);
  font-size: clamp(0.95rem, 1.2vw, 1.5rem);
  line-height: 2.35;
  color: #fff;
  letter-spacing: 0.04em;
  margin-top: 1rem;
  margin-bottom: 1rem;
}


/* ============================================================
   (３) PRODUCT LIST ? PC: 左写真/右テキスト 交互
   ============================================================ */
.cat-list { padding: 0; }

.cat-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: clamp(460px, 60vh, 680px);
  overflow: hidden;
}
/* 偶数: 写真右・テキスト左 */
.cat-item:nth-child(even) { direction: rtl; }
.cat-item:nth-child(even) > * { direction: ltr; }

/* ── 写真（PC） ── */
.cat-item__img-wrap {
  position: relative;
  overflow: hidden;
  background: var(--bg-section);
}
.cat-item__img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.9s ease;
}
.cat-item__img-wrap:hover .cat-item__img { transform: scale(1.04); }

/* モチーフバッジ（写真左下） */
.cat-item__badge {
  position: absolute;
  bottom: 0; left: 0;
  z-index: 2;
  font-family: var(--font-ja);
  font-size: 0.56rem;
  letter-spacing: 0.14em;
  padding: 0.3rem 0.8rem;
  line-height: 1.5;
}
.cat-item__badge--shingen  { background: var(--shingen-bg);  color: var(--shingen-text); }
.cat-item__badge--masamune { background: var(--masamune-bg); color: var(--masamune-text); }
.cat-item__badge--kenshin  { background: var(--kenshin-bg);  color: var(--kenshin-text); }

/* NEW / LIMITED */
.cat-item__tag {
  position: absolute;
  top: 1rem; right: 1rem;
  z-index: 2;
  font-family: var(--font-en);
  font-size: 0.5rem;
  letter-spacing: 0.22em;
  padding: 0.26rem 0.65rem;
  line-height: 1.4;
}
.cat-item__tag--new     { background: var(--bg); border: 1px solid var(--silver); color: var(--ink-mid); }
.cat-item__tag--limited { background: var(--ink); color: var(--bg); }

/* ── SP: 写真内オーバーレイ（商品名 + 矢印） ── */
/* PC では非表示、SP でのみ表示 */
.cat-item__sp-label {
  display: none; /* PCでは非表示 */
}

/* ── テキストパネル（PC） ── */
.cat-item__text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(3rem, 6vw, 5.5rem) clamp(2.5rem, 5.5vw, 5rem);
  background: var(--bg);
}
.cat-item:nth-child(even) .cat-item__text { background: var(--bg-section); }

.cat-item__cat {
  font-family: var(--font-en);
  font-size: 0.58rem;
  letter-spacing: 0.38em;
  color: var(--silver-deep);
  margin-bottom: 0.65rem;
}
.cat-item__name {
  font-family: var(--font-ja);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.8vw, 1.85rem);
  letter-spacing: 0.15em;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: 0.3rem;
}
.cat-item__name-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  color: var(--ink-light);
  margin-bottom: 1.5rem;
}
.cat-item__rule {
  width: 36px; height: 1px;
  background: var(--silver);
  margin-bottom: 1.5rem;
}
.cat-item__desc {
  font-family: var(--font-ja);
  font-size: clamp(0.8rem, 1.4vw, 0.875rem);
  line-height: 2.35;
  color: var(--ink-mid);
  letter-spacing: 0.04em;
  margin-bottom: 2rem;
}
.cat-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  margin-bottom: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}
.cat-item__meta-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  width: 100%;
}
.cat-item__meta-label {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--silver-deep);
  min-width: 62px;
  flex-shrink: 0;
}
.cat-item__meta-val {
  font-family: var(--font-ja);
  font-size: 0.8rem;
  color: var(--ink-mid);
}
.cat-item__price {
  font-family: var(--font-ja);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--ink);
  font-weight: 500;
}

/* PC: ショップボタン（通常表示） */
.cat-item__shop-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.32em;
  color: var(--ink);
  border: 1px solid var(--ink);
  padding: 0.85rem 2rem;
  text-decoration: none;
  transition: background 0.3s, color 0.3s;
  align-self: flex-start;
}
.cat-item__shop-btn:hover { background: var(--ink); color: var(--bg); }
.cat-item__shop-btn svg {
  width: 14px; height: 14px;
  fill: none; stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round; stroke-linejoin: round;
}

/* SP専用「SHOPへ」ボタン（PC では非表示） */
.cat-item__sp-shop-btn {
  display: none;
}

/* ============================================================
   SP ? タップアコーディオン
   ============================================================ */
@media (max-width: 860px) {

  /* グリッドを1列に */
  .cat-item {
    grid-template-columns: 1fr;
    min-height: auto;
    direction: ltr;
  }
  .cat-item:nth-child(even) { direction: ltr; }

  /* 写真エリア */
  .cat-item__img-wrap {
    aspect-ratio: 4 / 3;
    cursor: pointer;
    position: relative;
  }

  /* 写真を少し暗くしてオーバーレイを見やすく */
  .cat-item__img {
    transition: transform 0.6s ease, filter 0.4s ease;
  }
  .cat-item__img-wrap:hover .cat-item__img,
  .cat-item.is-open .cat-item__img-wrap .cat-item__img {
    filter: brightness(0.75);
  }

  /* ── SP: 写真内オーバーレイ ? 商品名（白）+ 矢印 ── */
  .cat-item__sp-label {
    display: flex;                  /* SPのみ表示 */
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    position: absolute;
    inset: 0;
    z-index: 4;
    pointer-events: none;           /* タップはimg-wrapで受ける */
    padding: 1.25rem 1.25rem 1.5rem;
    /* 下から文字が見えるグラデ */
    background: linear-gradient(to top, rgba(10,10,8,0.72) 0%, transparent 55%);
  }

  .cat-item__sp-name {
    font-family: var(--font-ja);
    font-weight: 700;
    font-size: clamp(1.05rem, 5vw, 1.35rem);
    letter-spacing: 0.12em;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 0.2rem;
    text-shadow: 0 1px 6px rgba(0,0,0,0.5);
  }
  .cat-item__sp-name-en {
    font-family: var(--font-en);
    font-style: italic;
    font-size: 0.78rem;
    color: rgba(255,255,255,0.55);
    margin-bottom: 0.85rem;
  }

  /* 下矢印インジケーター */
  .cat-item__sp-arrow {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-en);
    font-size: 0.52rem;
    letter-spacing: 0.3em;
    color: rgba(255,255,255,0.65);
    transition: opacity 0.35s;
  }
  .cat-item__sp-arrow svg {
    width: 20px; height: 20px;
    stroke: rgba(255,255,255,0.65);
    fill: none;
    stroke-width: 1.2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.4s ease;
  }
  /* 展開後: 矢印を上向き（×の代わりに↑）に */
  .cat-item.is-open .cat-item__sp-arrow svg { transform: rotate(180deg); }
  .cat-item.is-open .cat-item__sp-arrow .arrow-label-open   { display: inline; }
  .cat-item.is-open .cat-item__sp-arrow .arrow-label-closed { display: none; }
  .cat-item__sp-arrow .arrow-label-open { display: none; }

  /* ── テキストパネル: 初期は高さ0で非表示 ── */
  .cat-item__text {
    max-height: 0;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    transition:
      max-height 0.65s cubic-bezier(0.4, 0, 0.2, 1),
      padding    0.65s cubic-bezier(0.4, 0, 0.2, 1),
      opacity    0.5s  ease 0.08s;
  }
  /* 展開状態 */
  .cat-item.is-open .cat-item__text {
    max-height: 900px;
    padding-top:    clamp(2rem, 5vw, 3rem);
    padding-bottom: clamp(2rem, 5vw, 3rem);
    opacity: 1;
  }

  /* PC用ショップボタンを非表示 */
  .cat-item__shop-btn { display: none; }

  /* SP専用「SHOPへ」ボタン: 展開エリアの末尾に表示 */
  .cat-item__sp-shop-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    font-family: var(--font-en);
    font-size: 0.68rem;
    letter-spacing: 0.35em;
    color: #fff;
    background: var(--ink);
    border: 1px solid var(--ink);
    padding: 1rem 0;
    text-decoration: none;
    width: 100%;
    margin-top: 0.5rem;
    transition: background 0.3s, opacity 0.3s;
  }
  .cat-item__sp-shop-btn:active { opacity: 0.75; }
  .cat-item__sp-shop-btn svg {
    width: 15px; height: 15px;
    fill: none; stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: round; stroke-linejoin: round;
  }
}

@media (max-width: 560px) {
  .cat-item__img-wrap { aspect-ratio: 1 / 1; }
}

/* ============================================================
   PAGE FOOTER AREA
   ============================================================ */
.cat-more {
  padding: clamp(3.5rem, 7vw, 6rem) var(--gutter);
  background: var(--bg-section);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}
.cat-more__text {
  font-family: var(--font-ja);
  font-size: 0.85rem;
  color: var(--ink-light);
  letter-spacing: 0.05em;
}