/* puzzlepo：紙面にゲームと同じ藍と5色のタイルを差し色に使う */
:root {
  --paper: #eceef4;
  --card: #ffffff;
  --ink: #1a1f33;
  --muted: #5d6481;
  --line: #d3d7e4;
  --board: #1d2747;
  --well: #26325a;
  --accent: #e2a62a;
  --accent-ink: #2a1e05;
  --link: #2f63b8;
  --t0: #e0485a;
  --t1: #f0b429;
  --t2: #46b36b;
  --t3: #3c86e0;
  --t4: #9a6ae0;
  --font-display: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f1220; --card: #171b2e; --ink: #e7e9f2; --muted: #9aa1bd; --line: #2a3150;
    --board: #18203d; --well: #222c50; --link: #8db4ff; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f1220; --card: #171b2e; --ink: #e7e9f2; --muted: #9aa1bd; --line: #2a3150;
  --board: #18203d; --well: #222c50; --link: #8db4ff; color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}
a { color: var(--link); }
img, svg { max-width: 100%; }

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding-inline: 16px;
}

/* ヘッダー */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 14px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.brand-mark { width: 28px; height: 28px; flex: none; }
.site-nav { display: flex; gap: 16px; font-size: 14px; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }

/* ヒーロー */
.hero { padding-block: 40px 24px; }
.hero h1 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 6vw, 36px);
  line-height: 1.3;
}
.hero p { margin: 0; color: var(--muted); max-width: 40em; }

/* セクション */
section { padding-block: 16px 24px; }
h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.4;
  margin: 0 0 12px;
}
h3 { font-size: 17px; margin: 20px 0 6px; }

/* ゲームカード */
.games { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.game-card {
  display: grid;
  grid-template-rows: auto 1fr;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
.game-card .thumb {
  display: grid;
  place-items: center;
  background: var(--board);
  padding: 20px;
}
.game-card .body { display: grid; gap: 8px; align-content: start; padding: 16px; }
.game-card h3 { margin: 0; font-family: var(--font-display); font-size: 20px; }
.game-card p { margin: 0; color: var(--muted); font-size: 15px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.tags li {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 8px;
}
.game-card .actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  font-weight: 700;
  text-decoration: none;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.game-card.soon .thumb { background: var(--well); color: #c9cfe6; font-family: var(--font-display); font-weight: 700; min-height: 140px; }

/* タイルの小さな絵 */
.mini-board {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 5px;
  width: 168px;
  padding: 8px;
  border-radius: 12px;
  background: var(--well);
}
.mini-board i { aspect-ratio: 1; border-radius: 5px; box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.18); }
.c0 { background: var(--t0); } .c1 { background: var(--t1); } .c2 { background: var(--t2); }
.c3 { background: var(--t3); } .c4 { background: var(--t4); }

/* 本文ページ */
.prose { max-width: 42em; }
.prose p, .prose ul, .prose ol { margin: 0 0 12px; }
.prose li { margin-bottom: 4px; }
.detail { padding-block: 32px 16px; }
.detail h1 { font-family: var(--font-display); font-weight: 900; font-size: clamp(24px, 5vw, 32px); line-height: 1.3; margin: 0 0 12px; }
.note { font-size: 14px; color: var(--muted); }

/* フッター */
.site-footer { margin-top: 32px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.site-footer .wrap { display: grid; gap: 8px; padding-block: 20px 32px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.site-footer a { color: var(--muted); }