/* ============================================================
   English Hub — トップページ専用スタイル（F案：技能カラーの石積みカード）
   共通の style.css は admin や各アプリでも使うので、ここは hub- 接頭辞で分離する
   ============================================================ */

/* --- 技能ごとの色（カード面・ラベル・本文・右下の英字） --- */
[data-tone] {
  --tone-bg: #e8e4dc;
  --tone-en: #5c554c;
  --tone-ja: #6b645c;
  --tone-title: #1a1714;
  --tone-desc: #4d4741;
  --tone-mark: #dad5cb;
}
[data-tone="vocabulary"] { --tone-bg: #cfe0cf; --tone-en: #2f5a3c; --tone-ja: #4a6b55; --tone-desc: #3a4a3f; --tone-mark: #bcd3bc; }
[data-tone="writing"]    { --tone-bg: #efe6d6; --tone-en: #6e5a3a; --tone-ja: #7d6e55; --tone-desc: #4d4538; --tone-mark: #e3d6bf; }
[data-tone="reading"]    { --tone-bg: #e2d8c3; --tone-en: #5f4f30; --tone-ja: #6f6248; --tone-desc: #4a4234; --tone-mark: #d4c8ae; }
[data-tone="listening"]  { --tone-bg: #52b788; --tone-en: #0f3d26; --tone-ja: #1d4d34; --tone-title: #0f2a1c; --tone-desc: #173b28; --tone-mark: #63c194; }
[data-tone="speaking"]   { --tone-bg: #2d6a4f; --tone-en: #d8f3dc; --tone-ja: #b7dcc3; --tone-title: #ffffff; --tone-desc: #e2f1e6; --tone-mark: #3d7a5f; }
[data-tone="grammar"]    { --tone-bg: #d8f3dc; --tone-en: #2d6a4f; --tone-ja: #4a6b57; --tone-desc: #3d4a42; --tone-mark: #c3e7c9; }
[data-tone="ocr"]        { --tone-bg: #d6d1c8; --tone-en: #4f4942; --tone-ja: #635c54; --tone-desc: #45403a; --tone-mark: #c8c2b8; }
[data-tone="utility"]    { --tone-bg: #e8e4dc; --tone-en: #5c554c; --tone-ja: #6b645c; --tone-desc: #4d4741; --tone-mark: #dad5cb; }
/* 教員向け：白い紙＋細い罫線で生徒向け（塗りカード）と見分ける。英字ラベルの色で種類を分ける */
[data-tone="material"],
[data-tone="quiz"],
[data-tone="office"]     { --tone-bg: #ffffff; --tone-ja: #6b645c; --tone-desc: #4d4741; --tone-mark: #f0ede8; --tone-line: #e2ddd8; }
[data-tone="material"]   { --tone-en: #2d6a4f; }
[data-tone="quiz"]       { --tone-en: #8a5a2b; }
[data-tone="office"]     { --tone-en: #5c554c; }

/* --- ページ枠 --- */
.hub-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 72px;
}

/* --- 見出し＋公開数 --- */
.hub-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.hub-title {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}
.hub-lead {
  margin-top: 6px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.hub-head__side {
  display: flex;
  align-items: flex-end;
  gap: 28px;
  flex-shrink: 0;
}
.hub-count {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}

/* --- プリント・資料への入口（見出し右側、公開数の左） --- */
.hub-prints {
  display: grid;
  grid-template-columns: auto auto;
  align-items: end;
  column-gap: 14px;
  padding: 10px 28px 10px 0;
  border-right: 1px solid var(--color-border);
  color: var(--color-text);
}
.hub-prints__en {
  grid-column: 1 / -1;
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.hub-prints__ja {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
}
.hub-prints__go {
  font-size: 1.15rem;
  line-height: 1.4;
  padding-bottom: 4px;
  color: var(--color-accent);
  transition: transform var(--transition);
}
.hub-prints:hover .hub-prints__ja { color: var(--color-accent); }
.hub-prints:hover .hub-prints__go { transform: translateX(4px); }
.hub-prints:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}
.hub-count small {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}
.hub-count b {
  font-size: 4.5rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

/* --- サブページ（プリント・資料）用 --- */
.hub-back {
  display: inline-block;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.hub-back:hover { color: var(--color-accent); }
.hub-kicker {
  margin-bottom: 4px;
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.hub-rule {
  height: 1px;
  margin-bottom: 28px;
  background: var(--color-border);
}

/* --- 絞り込み（色見本つき凡例） --- */
.hub-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  padding: 12px 0;
  margin-bottom: 28px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.hub-filter__btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 0;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  font: inherit;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.hub-filter__btn:hover { color: var(--color-text); }
.hub-filter__btn.is-active {
  color: var(--color-text);
  font-weight: 700;
  border-bottom-color: var(--color-accent);
}
.hub-filter__btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}
.hub-swatch {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--tone-bg);
}
.hub-swatch--all {
  background: var(--color-bg);
  border: 1px solid var(--color-text-muted);
}
.hub-swatch--teacher {
  background: #ffffff;
  border: 1px solid #b9b2a8;
}
.hub-filter__sep {
  align-self: center;
  width: 1px;
  height: 16px;
  background: var(--color-border);
}

/* --- カードの並び ---
   JS が無効のときは均等グリッドで表示（段々なし）。
   JS（home.js）が有効なら .is-masonry を付けて、列ごとの縦積み（段々）に組み替える。 */
.hub-grid {
  --hub-gap: 16px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--hub-gap);
  align-items: start;
}
.hub-grid.is-masonry {
  display: flex;
  align-items: flex-start;
}
.hub-col {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--hub-gap);
}

/* --- カード --- */
.hub-card {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-sm);
  padding: 20px 20px 18px;
  background: var(--tone-bg);
  color: var(--tone-title);
  border: 1px solid var(--tone-line, transparent);
  transition: filter var(--transition);
}
.hub-card__for {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 1px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.7rem;
  line-height: 1.6;
  color: var(--tone-en);
}
.hub-card[hidden] { display: none; }
.hub-card:hover { filter: brightness(0.97); }
.hub-card:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}
.hub-card__en {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--tone-en);
}
.hub-card__ja {
  display: block;
  margin: 2px 0 16px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--tone-ja);
}
.hub-card__title {
  position: relative;
  margin-bottom: 8px;
  font-size: 1.32rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--tone-title);
}
.hub-card__desc {
  position: relative;
  margin-bottom: 20px;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--tone-desc);
}
.hub-card__go {
  position: relative;
  display: inline-block;
  font-size: 1.15rem;
  line-height: 1;
  color: var(--tone-title);
  transition: transform var(--transition);
}
.hub-card:hover .hub-card__go { transform: translateX(4px); }
.hub-card__mark {
  position: absolute;
  right: 10px;
  bottom: -16px;
  font-size: 6.5rem;
  line-height: 1;
  color: var(--tone-mark);
  pointer-events: none;
  user-select: none;
}

/* --- 空状態 --- */
.hub-empty {
  padding: 40px 0;
  text-align: center;
  color: var(--color-text-muted);
}

/* --- 準備中 --- */
.hub-soon { margin-top: 44px; }
.hub-soon__title {
  margin-bottom: 12px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: #9a928a;
}
.hub-soon__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}
.hub-soon__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  background: #eceae5;
}
.hub-soon__item b {
  font-size: 0.85rem;
  font-weight: 500;
  color: #847d74;
}
.hub-soon__item span {
  font-size: 0.72rem;
  color: #9a928a;
  white-space: nowrap;
}

/* --- スマホ --- */
@media (max-width: 600px) {
  .hub-main { padding: 28px 16px 56px; }
  .hub-head { flex-direction: column; align-items: stretch; }
  .hub-head__side { justify-content: space-between; gap: 16px; }
  .hub-prints { border-right: 0; padding-right: 0; }
  .hub-title { font-size: 1.35rem; }
  .hub-count b { font-size: 3.2rem; }
  .hub-filter { gap: 2px 16px; }
  .hub-grid { --hub-gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .hub-card, .hub-card__go, .hub-filter__btn { transition: none; }
}