/* =====================================================================
   style.css — 数独ジェネレーター ツール固有の微調整のみ。
   共通スタイルは /_shared/shirugear.css に任せる。
   ===================================================================== */

/* 難易度切替（手本のモード切替を流用） */
.sg-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: var(--sg-space-1, 4px);
}
.sg-mode {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.95rem;
}

/* 操作ボタン群 */
.sudoku-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.sudoku-actions .sg-btn {
  padding: 8px 14px;
  font-size: 0.95rem;
}

/* ---------- 盤面 ---------- */
.sudoku-board-wrap {
  display: flex;
  justify-content: center;
}
.sudoku-board {
  --line: var(--sg-fg, #222);
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  width: min(100%, 480px);
  aspect-ratio: 1 / 1;
  border: 2px solid var(--line);
  background: var(--sg-surface, #fff);
}

.sudoku-cell {
  position: relative;
  padding: 0;
  margin: 0;
  border: 0.5px solid var(--sg-border, #cbd0da);
  background: var(--sg-surface, #fff);
  color: var(--sg-fg, #222);
  font-family: inherit;
  font-size: clamp(1rem, 5.2vw, 1.6rem);
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.1s ease;
}
/* 3×3 ブロックの太線 */
.sudoku-cell.bl-left { border-left: 2px solid var(--line); }
.sudoku-cell.bl-right { border-right: 2px solid var(--line); }
.sudoku-cell.bl-top { border-top: 2px solid var(--line); }
.sudoku-cell.bl-bottom { border-bottom: 2px solid var(--line); }

.sudoku-cell__val {
  pointer-events: none;
}
/* 手がかり（初期数字）は太字・不変を表現 */
.sudoku-cell.is-given .sudoku-cell__val {
  font-weight: 700;
  color: var(--sg-fg, #222);
}
/* 自分で入れた値はアクセント色で区別 */
.sudoku-cell.has-value:not(.is-given) .sudoku-cell__val {
  color: var(--sg-primary, #3b5bdb);
}

/* 選択・関連ハイライト */
.sudoku-cell.is-peer { background: var(--sg-accent, #eef1fb); }
.sudoku-cell.is-same { background: var(--sg-accent, #dfe6fb); }
.sudoku-cell.is-selected {
  background: color-mix(in srgb, var(--sg-primary, #3b5bdb) 22%, transparent);
}
.sudoku-cell:focus-visible {
  outline: 2px solid var(--sg-primary, #3b5bdb);
  outline-offset: -2px;
}

/* 間違いチェック */
.sudoku-cell.is-wrong .sudoku-cell__val,
.sudoku-cell.is-conflict .sudoku-cell__val {
  color: #d92d20;
}
.sudoku-cell.is-wrong { background: rgba(217, 45, 32, 0.12); }

/* 候補メモ（3×3の小さな数字） */
.sudoku-cell__notes {
  position: absolute;
  inset: 2px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  pointer-events: none;
}
.sudoku-note {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(0.5rem, 2vw, 0.62rem);
  font-weight: 500;
  line-height: 1;
  color: var(--sg-muted, #777);
}

/* ステータス */
.sudoku-status {
  min-height: 1.4em;
  margin: 12px 0 4px;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 600;
}
.sudoku-status.is-ok { color: #067647; }
.sudoku-status.is-warn { color: #b54708; }

/* トグル（メモ・チェック） */
.sudoku-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 12px;
}
.sudoku-toggle.is-on {
  color: var(--sg-primary-fg, #fff);
  background: var(--sg-primary, #3b5bdb);
  border-color: var(--sg-primary, #3b5bdb);
}

/* 数字入力パッド */
.sudoku-pad {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  max-width: 480px;
  margin: 0 auto;
}
.sudoku-key {
  padding: 12px 0;
  font-family: inherit;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--sg-fg, #222);
  background: var(--sg-surface, #fff);
  border: 1px solid var(--sg-border, #cbd0da);
  border-radius: var(--sg-radius, 8px);
  cursor: pointer;
}
.sudoku-key:hover { background: var(--sg-accent, #eef1fb); }
.sudoku-key:focus-visible {
  outline: 2px solid var(--sg-primary, #3b5bdb);
  outline-offset: 2px;
}
.sudoku-key--erase {
  grid-column: span 2;
  font-size: 1rem;
}

.sudoku-hint {
  max-width: 480px;
  margin: 12px auto 0;
}

/* 早見表（難易度対応） */
.sg-chart {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 2px 16px;
}
.sg-chart-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 5px 0;
  border-bottom: 1px solid var(--sg-border, #e5e7eb);
}
.sg-chart-row__key {
  flex: 0 0 5em;
  font-weight: 600;
}
.sg-chart-row__val {
  flex: 1 1 auto;
  color: var(--sg-muted, #555);
}

/* ---------- 印刷: 盤面だけをきれいに ---------- */
@media print {
  .sudoku-board {
    --line: #000;
    width: 150mm;
    max-width: 100%;
    page-break-inside: avoid;
  }
  .sudoku-cell {
    color: #000 !important;
    background: #fff !important;
    border-color: #999 !important;
  }
  .sudoku-cell.bl-left { border-left: 2px solid #000 !important; }
  .sudoku-cell.bl-right { border-right: 2px solid #000 !important; }
  .sudoku-cell.bl-top { border-top: 2px solid #000 !important; }
  .sudoku-cell.bl-bottom { border-bottom: 2px solid #000 !important; }
  .sudoku-cell.has-value:not(.is-given) .sudoku-cell__val { color: #000 !important; }
  /* 選択・チェックの色付けは印刷では消す */
  .sudoku-cell.is-peer,
  .sudoku-cell.is-same,
  .sudoku-cell.is-selected,
  .sudoku-cell.is-wrong { background: #fff !important; }

  /* 操作系UIは印刷しない */
  .sudoku-actions,
  .sudoku-toggles,
  .sudoku-pad,
  .sudoku-hint,
  .sudoku-status,
  .sg-modes,
  .sg-related-links,
  .sg-sitelinks,
  #gen-note {
    display: none !important;
  }
}