/* =====================================================
   共通変数
===================================================== */
:root {
  --color-bg:        #14151a;
  --color-surface:   #1e2026;
  --color-surface-2: #262932;
  --color-border:    #353a45;
  --color-text:      #e6e8ee;
  --color-text-muted:#9aa0ad;
  --color-accent:    #ff5d8f;
  --color-accent-2:  #ffb84c;

  --radius: 10px;
  --container-width: 1180px;
  --font-base: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
                "Noto Sans JP", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-base);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 16px;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}


/* =====================================================
   ヘッダー / フッター
===================================================== */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
}
.site-logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

main {
  padding: 28px 0 60px;
  min-height: 60vh;
}

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 24px 0 40px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.site-footer .disclaimer {
  margin-top: 8px;
  line-height: 1.8;
}


/* =====================================================
   ページ見出し
===================================================== */
.page-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  margin: 0 0 8px;
  letter-spacing: 0.01em;
}

.page-lead {
  color: var(--color-text-muted);
  margin: 0 0 28px;
  font-size: 0.95rem;
}


/* =====================================================
   トップページ: ランキンググリッド
===================================================== */
.item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}

@media (min-width: 640px) {
  .item-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1024px) {
  .item-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.item-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  transition: transform 0.15s ease, border-color 0.15s ease;
  color: var(--color-text);
}
.item-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
  text-decoration: none;
}

.item-card__rank {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--color-accent);
  color: #1a1a1a;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 999px;
  z-index: 2;
  line-height: 1.4;
}

.item-card__thumb {
  display: block;
  aspect-ratio: 200 / 280;
  overflow: hidden;
  background: var(--color-surface-2);
}
.item-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.item-card__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px 14px;
  flex: 1;
}

.item-card__title {
  font-size: 0.85rem;
  font-weight: 600;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.item-card__price {
  margin-top: auto;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent-2);
}


/* =====================================================
   詳細ページ
===================================================== */
.breadcrumb {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: var(--color-text-muted);
}
.breadcrumb a:hover {
  color: var(--color-accent);
}

.item-detail__title {
  font-size: clamp(1.25rem, 3.5vw, 1.9rem);
  font-weight: 800;
  margin: 0 0 20px;
  line-height: 1.5;
}

.item-detail__main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

@media (min-width: 768px) {
  .item-detail__main {
    grid-template-columns: minmax(240px, 360px) 1fr;
  }
}

.item-detail__thumb img {
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.item-detail__info {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.item-detail__price {
  font-size: 1.1rem;
}
.item-detail__price strong {
  color: var(--color-accent-2);
  font-size: 1.4rem;
}

.item-detail__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.item-detail__genres {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.genre-tag {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.sample-images h2 {
  font-size: 1.1rem;
  margin-bottom: 14px;
}
.sample-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.sample-grid img {
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.back-link {
  margin-top: 32px;
}


/* =====================================================
   更新日時表示
===================================================== */
.updated-at {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.page-updated-at {
  margin-top: 28px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}


/* =====================================================
   ランキング変動バッジ
===================================================== */
.rank-change {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: 999px;
  line-height: 1.5;
}
.rank-change--new {
  background: var(--color-accent-2);
  color: #1a1a1a;
}
.rank-change--up {
  background: #2dbb6e;
  color: #0f1a14;
}
.rank-change--down {
  background: #4a5161;
  color: var(--color-text);
}


/* =====================================================
   評価バッジ(高評価 / レビュー多数)
===================================================== */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  margin-right: 4px;
}
.badge--gold {
  background: #4a3a14;
  color: #ffce5c;
}
.badge--blue {
  background: #163047;
  color: #6cb6ff;
}

.item-card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 2px;
}

.item-detail__badges {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}


/* =====================================================
   編集者コメント
===================================================== */
.item-card__comment {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.editor-comment {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  font-style: italic;
  border-left: 3px solid var(--color-accent);
  padding-left: 10px;
  margin: 0;
}


/* =====================================================
   関連作品
===================================================== */
.related-items {
  margin-top: 40px;
}
.related-items h2 {
  font-size: 1.1rem;
  margin-bottom: 14px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 14px;
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.related-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  text-decoration: none;
}
.related-card img {
  aspect-ratio: 160 / 224;
  object-fit: cover;
}
.related-card__title {
  font-size: 0.78rem;
  padding: 0 8px 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}


/* =====================================================
   ボタン
===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 14px 22px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
}
.btn--primary {
  background: var(--color-accent);
  color: #1a1a1a;
}
.btn--primary:hover {
  background: #ff77a3;
  text-decoration: none;
}
.btn--secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--secondary:hover {
  background: var(--color-border);
  text-decoration: none;
}
.btn--block {
  display: flex;
  width: 100%;
}


/* =====================================================
   年齢確認モーダル
===================================================== */
.age-gate {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 12, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 20px;
}
.age-gate[hidden] {
  display: none;
}

body.age-gate-active {
  overflow: hidden;
}

.age-gate__box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.age-gate__title {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0 0 12px;
}

.age-gate__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0 0 24px;
}

.age-gate__buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (min-width: 420px) {
  .age-gate__buttons {
    flex-direction: row;
  }
  .age-gate__buttons .btn {
    flex: 1;
  }
}