/* ============================================================
   バーチャル店舗ページ専用スタイル
   デザイントークンは css/style.css（DESIGN.md §2）と揃える
   ※ @import は CSS の仕様で必ず先頭に置く
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+Antique:wght@900&family=Noto+Sans+JP:wght@400;700&display=swap');

:root {
  --ink:   #1a1a1a;
  --paper: #f5f3ee;
  --gray:  #9a948a;
  --c-vintage: #A32D2D;
  --font-display: "Zen Kaku Gothic Antique", "Dela Gothic One", sans-serif;
  --font-body:    "Gen Shin Gothic", "源真ゴシック", "Noto Sans JP", sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow: hidden;          /* 3D画面はスクロールさせない */
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--paper);
  color: var(--ink);
  font-size: 0.875rem;
  z-index: 99;
}
.skip-link:focus { top: 1rem; }

/* ============================================================
   上部バー
   ============================================================ */
.store-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30; /* 2Dフォールバック(15)や商品カード(20)より手前に置く */
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
  /* DESIGN.md の原則（グラデ禁止・フラット）に合わせ背景は敷かない。
     画面上部は常に暗い天井なので可読性は保てる */
  pointer-events: none;               /* バー自体は3D操作を邪魔しない */
}
.store-header a { pointer-events: auto; }

.store-back,
.store-shop-link {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  color: var(--gray);
  transition: color 0.14s;
  padding: 0.4rem 0.2rem;             /* タップしやすく */
}
.store-back:hover, .store-back:focus-visible,
.store-shop-link:hover, .store-shop-link:focus-visible {
  color: var(--paper);
}
.store-shop-link { color: var(--c-vintage); }
.store-shop-link:hover, .store-shop-link:focus-visible { color: var(--paper); }

.store-title {
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.35em;
  color: var(--gray);
}

/* ============================================================
   3Dステージ
   ============================================================ */
#stage {
  position: fixed;
  inset: 0;
}

#store-canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;      /* ブラウザのスクロール等に取られない */
  cursor: grab;
}
#store-canvas.dragging { cursor: grabbing; }

/* ============================================================
   操作ヒント・ローディング
   ============================================================ */
.hint {
  position: absolute;
  left: 50%;
  bottom: 2.2rem;
  transform: translateX(-50%);
  z-index: 5;
  background: rgba(26, 26, 26, 0.8);
  border: 1px solid rgba(245, 243, 238, 0.18);
  padding: 0.7rem 1.4rem;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--gray);
  text-align: center;
  letter-spacing: 0.06em;
  pointer-events: none;
  transition: opacity 0.6s ease;
  max-width: calc(100vw - 2rem);
}
.hint.hidden { opacity: 0; }

/* PC/スマホでヒント文を出し分け（ポインタの粗さで判定） */
.hint-pc { display: none; }
@media (pointer: fine) {
  .hint-pc { display: block; }
  .hint-mobile { display: none; }
}

.loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  z-index: 6;
  transition: opacity 0.4s ease;
}
.loading.done { opacity: 0; pointer-events: none; }

.loading-text {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.4em;
  color: var(--gray);
}

/* ============================================================
   商品カード（オーバーレイ）
   ============================================================ */
.product-card-wrap {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(26, 26, 26, 0.55);
}
/* hidden 属性が display:flex に負けないようにする */
.product-card-wrap[hidden],
#fallback[hidden],
#stage[hidden] {
  display: none;
}

.product-card {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: var(--ink);
  border: 1px solid rgba(245, 243, 238, 0.2);
  border-bottom: none;
  padding: 1.5rem 1.5rem 1.75rem;
  animation: card-up 0.22s ease;
}

@media (min-width: 640px) {
  .product-card-wrap { align-items: center; }
  .product-card { border-bottom: 1px solid rgba(245, 243, 238, 0.2); }
}

@keyframes card-up {
  from { transform: translateY(24px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.card-close {
  position: absolute;
  top: 0.4rem;
  right: 0.4rem;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  color: var(--gray);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}
.card-close:hover, .card-close:focus-visible { color: var(--paper); }

.card-img-wrap {
  width: 130px;
  margin: 0 auto 1rem;
  background: #22211f;
  border: 1px solid rgba(245, 243, 238, 0.1);
}
.card-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

.card-cat {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 900;
  letter-spacing: 0.24em;
  color: var(--c-vintage);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  text-align: center;
}

.card-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 900;
  line-height: 1.4;
  text-align: center;
  margin-bottom: 0.5rem;
}

.card-price {
  font-size: 0.95rem;
  color: var(--gray);
  text-align: center;
  margin-bottom: 1.25rem;
  letter-spacing: 0.08em;
}

.btn-shopify {
  display: block;
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  padding: 0.85rem 2rem;
  border: 1.5px solid var(--c-vintage);
  color: var(--c-vintage);
  background: transparent;
  transition: background 0.14s ease, color 0.14s ease;
}
.btn-shopify:hover, .btn-shopify:focus-visible {
  background: var(--c-vintage);
  color: var(--paper);
}

/* ============================================================
   2Dフォールバック（WebGL非対応時）
   ============================================================ */
#fallback {
  position: fixed;
  inset: 0;
  z-index: 15;
  overflow-y: auto;
  background: var(--ink);
  padding: 4.5rem 1.25rem 3rem;
}

.fallback-inner {
  max-width: 860px;
  margin: 0 auto;
}

.fallback-note {
  font-size: 0.8rem;
  color: var(--gray);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.fallback-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (min-width: 640px) {
  .fallback-grid { grid-template-columns: repeat(3, 1fr); }
}

.fb-card {
  border: 1px solid rgba(245, 243, 238, 0.12);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.fb-card img { width: 100%; height: auto; display: block; }
.fb-name { font-size: 0.82rem; line-height: 1.5; }
.fb-price { font-size: 0.8rem; color: var(--gray); }
.fb-link {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--c-vintage);
  margin-top: auto;
}
.fb-link:hover, .fb-link:focus-visible { color: var(--paper); }

/* ============================================================
   アニメーション軽減
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}