/* パンくず */
    .breadcrumb { background: var(--gray1); padding: 12px 0; font-size: 12px; color: var(--gray3); }
    .breadcrumb a { color: var(--coral); }
    .breadcrumb span { margin: 0 6px; }

    /* ページヒーロー */
    .page-hero {
      background-color: #F0F4FF;
      background-image: url("/KidsRenew/img/puzzle.png");
      background-repeat: no-repeat;
      background-size: 30%;
      background-position: 78% 95%;
      padding: 40px 0 32px;
    }
    .page-hero-label {
      display: inline-flex; align-items: center; gap: 6px;
      background: var(--white); border: 2px solid var(--yellow);
      border-radius: 999px; padding: 6px 16px;
      font-size: 12px; font-weight: 700; color: var(--orange); margin-bottom: 16px;
    }
    .page-hero h1 { font-size: clamp(20px, 3.5vw, 32px); font-weight: 900; color: var(--text); margin-bottom: 8px; }
    .page-hero-desc { font-size: 14px; color: var(--text2); }

    /* ゲームセクション */
    .game-section { padding: 40px 0 72px; background: var(--bg); }

    /* コントロールカード */
    .controls-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: 0 2px 12px rgba(255,107,107,.08);
      border: 1px solid var(--gray2);
      margin-bottom: 20px;
    }
    .controls-title { font-family: "Zen Maru Gothic", sans-serif; font-size: 16px; font-weight: 900; color: var(--text); margin-bottom: 18px; }
    .controls-grid { display: grid; grid-template-columns: 1fr 1fr auto; gap: 20px; align-items: end; }

    /* 画像選択 */
    .control-group label:first-child { display: block; font-size: 12px; font-weight: 700; color: var(--gray3); margin-bottom: 10px; text-transform: uppercase; letter-spacing: .5px; }
    .image-selector { display: flex; flex-direction: column; gap: 8px; }
    .image-option {
      display: flex; align-items: center; gap: 10px;
      padding: 10px 14px; border-radius: 10px;
      border: 2px solid var(--gray2);
      cursor: pointer; transition: all .15s; font-size: 13px; font-weight: 600;
    }
    .image-option:hover { border-color: var(--coral); background: var(--pink); }
    .image-option.selected { border-color: var(--coral); background: var(--pink); }
    .image-option input[type=radio] { display: none; }
    .image-preview-thumb { width: 52px; height: 36px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }

    /* 難易度ボタン */
    .difficulty-selector { display: flex; flex-direction: column; gap: 8px; }
    .diff-btn {
      display: flex; flex-direction: column; align-items: center; gap: 2px;
      padding: 12px 16px; border-radius: 10px;
      border: 2px solid var(--gray2); background: var(--white);
      font-family: "Kiwi Maru", serif; font-size: 14px; font-weight: 700; color: var(--text);
      cursor: pointer; transition: all .15s;
    }
    .diff-btn small { font-size: 11px; color: var(--gray3); font-weight: 400; }
    .diff-btn:hover { border-color: var(--coral); background: var(--pink); }
    .diff-btn.active { border-color: var(--coral); background: linear-gradient(135deg, var(--coral), var(--orange)); color: var(--white); }
    .diff-btn.active small { color: rgba(255,255,255,.8); }

    /* スタートボタン */
    #start-btn {
      width: 100%; padding: 14px 32px; font-size: 16px; font-weight: 900;
      background: linear-gradient(135deg, var(--coral), var(--orange));
      color: var(--white); border: none; border-radius: 12px;
      font-family: "Zen Maru Gothic", sans-serif; cursor: pointer;
      box-shadow: 0 4px 16px rgba(255,107,107,.35); transition: transform .15s;
    }
    #start-btn:hover { transform: translateY(-2px); }

    /* プログレス */
    .puzzle-progress { margin-bottom: 16px; }
    .progress-bar-wrap { background: var(--gray2); border-radius: 999px; height: 8px; overflow: hidden; margin-bottom: 10px; }
    .progress-bar { height: 100%; background: linear-gradient(90deg, var(--coral), var(--orange)); border-radius: 999px; transition: width .3s; width: 0%; }
    .progress-stats { display: flex; gap: 20px; flex-wrap: wrap; }
    .stat-item { display: flex; align-items: center; gap: 6px; }
    .stat-label { font-size: 12px; color: var(--gray3); font-weight: 700; }
    .stat-value { font-family: "Zen Maru Gothic", sans-serif; font-size: 15px; font-weight: 900; color: var(--coral); }

    /* パズルエリア */
    .puzzle-area {
      background: var(--white);
      border-radius: var(--radius);
      border: 1px solid var(--gray2);
      overflow: hidden;
      margin-bottom: 16px;
      position: relative;
    }
    #puzzle-wrapper {
      overflow: hidden;
      width: 100%;
      position: relative;
    }
    #puzzle-container {
      display: grid;
      user-select: none;
      transform-origin: top left;
    }
    .puzzle-piece {
      background-repeat: no-repeat;
      cursor: grab;
      border: 1px solid rgba(255,255,255,.25);
      transition: opacity .15s, box-shadow .15s;
      box-sizing: border-box;
    }
    .puzzle-piece.dragging { opacity: .55; cursor: grabbing; }
    .puzzle-piece.drag-over { box-shadow: inset 0 0 0 3px var(--coral); }
    .puzzle-piece.in-place { border-color: rgba(46,204,113,.4); }

    /* 完成オーバーレイ */
    #complete-overlay {
      display: none; position: absolute; inset: 0;
      background: rgba(255,255,255,.92); backdrop-filter: blur(4px);
      flex-direction: column; align-items: center; justify-content: center;
      z-index: 10;
    }
    .complete-card { text-align: center; padding: 24px; }
    .complete-icon { font-size: 72px; animation: bounce .6s ease infinite alternate; margin-bottom: 12px; }
    @keyframes bounce { from { transform: translateY(0); } to { transform: translateY(-10px); } }
    .complete-title { font-family: "Zen Maru Gothic", sans-serif; font-size: 28px; font-weight: 900; color: var(--coral); margin-bottom: 8px; }
    .complete-time { font-size: 14px; color: var(--text2); margin-bottom: 20px; }
    .complete-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
    .complete-actions .btn-outline { color: var(--coral); border-color: var(--coral); }
    .complete-actions .btn-outline:hover { background: var(--coral); color: var(--white); }

    /* みほん */
    .hint-area { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 8px; }
    .hint-btn {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 8px 18px; border-radius: 999px;
      border: 2px solid var(--gray2); background: var(--white);
      font-family: "Kiwi Maru", serif; font-size: 13px; font-weight: 700; color: var(--text2);
      cursor: pointer; transition: all .15s;
    }
    .hint-btn:hover { border-color: var(--coral); color: var(--coral); }
    #hint-image-wrap { display: none; margin-top: 12px; }
    #hint-image { border-radius: var(--radius); border: 2px solid var(--gray2); max-width: 360px; width: 100%; }

    /* レスポンシブ */
    @media (max-width: 860px) {
      .controls-grid { grid-template-columns: 1fr 1fr; }
      .controls-grid .control-group:last-child { grid-column: 1 / -1; display: flex; justify-content: center; }
    }
    @media (max-width: 640px) {
      .page-hero { background-image: none; }
      .controls-grid { grid-template-columns: 1fr; }
      .controls-grid .control-group:last-child { display: block; }
    }