/* ==============================
   倍数・公倍数ブロック - スタイル
   修正: 単体HTML版から移植する際、グローバルセレクタ（*, html, body）を
   すべて .mbg-app にスコープし直し、他ページ・他プラグインへの影響を排除。
   Cocoonテーマ対策として、レイアウトに直結するプロパティに !important を付与。
   ============================== */

/* 修正: 全称セレクタは .mbg-app 内だけに限定（サイト全体のmargin/paddingを壊さないため） */
.mbg-app, .mbg-app * { box-sizing: border-box; margin: 0; padding: 0; }

/* 修正: html/bodyへの適用をやめ、.mbg-app自体を全画面固定オーバーレイにする */
.mbg-app {
  position: fixed !important;
  inset: 0 !important;
  height: 100%;
  overflow: hidden;
  font-family: "BIZ UDGothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  background: linear-gradient(180deg, #16324f 0%, #1e3a5f 60%, #24466e 100%);
  color: #fff;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  z-index: 999999; /* Cocoonのヘッダー等より前面に出す */
}

/* ---------- ヘッダー ---------- */
.mbg-header {
  position: fixed !important;
  top: 0; left: 0; right: 0;
  height: 56px;
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: rgba(10, 25, 45, 0.55);
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
  z-index: 10;
}

.mbg-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.mbg-status { display: flex; gap: 8px; align-items: center; }

.mbg-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 13px;
  white-space: nowrap;
}
.mbg-chip b { font-size: 17px; }
.mbg-chip-a { background: #c0392b; border-color: #e07b6c; }
.mbg-chip-b { background: #2563a8; border-color: #6ea8dd; }
.mbg-chip-score { border-color: #d4af37; }
.mbg-chip-score b { color: #d4af37; }

/* サプライズラウンドでA/Bが変わった時にチップを光らせる演出 */
@keyframes mbgChipFlash {
  0%, 100% { box-shadow: none; }
  50% { box-shadow: 0 0 0 5px rgba(212, 175, 55, .85); }
}
.mbg-flash { animation: mbgChipFlash 0.5s ease-in-out 3; }

/* ---------- 盤面ステージ ---------- */
.mbg-stage {
  position: absolute !important;
  top: 56px; left: 0; right: 0; bottom: 0;
  display: flex !important;
  align-items: center;
  justify-content: center;
  padding: 12px 88px 12px 12px; /* 右はツールバー分あける */
}

.mbg-board {
  position: relative;
  border-radius: 14px;
  background: #0d2238;
  border: 2px solid rgba(212, 175, 55, 0.45);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}
.mbg-board canvas { display: block; }

/* ---------- 右下ツールバー ---------- */
.mbg-toolbar {
  position: fixed !important;
  right: 14px;
  bottom: 14px;
  display: flex !important;
  flex-direction: column;
  gap: 10px;
  z-index: 20;
}

.mbg-tool {
  width: 56px;
  height: 56px;
  border: none;
  border-radius: 50%;
  background: #fff;
  color: #1e3a5f;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.1s;
}
.mbg-tool:active { transform: scale(0.92); }
.mbg-tool-main { background: #d4af37; color: #1e3a5f; }

/* ---------- モーダル共通 ---------- */
.mbg-modal {
  position: fixed !important;
  inset: 0;
  background: rgba(10, 20, 35, 0.75);
  display: none !important;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.mbg-modal.mbg-show { display: flex !important; }

.mbg-modal-card {
  position: relative; /* 修正: ハンバーガーボタンの絶対配置の基準にする */
  background: #fff;
  color: #1e3a5f;
  border-radius: 20px;
  padding: 28px 26px;
  width: 100%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.mbg-modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.mbg-modal-title {
  font-size: 20px;
  font-weight: 700;
  border-left: 6px solid #d4af37;
  padding-left: 10px;
}
.mbg-close {
  width: 40px; height: 40px;
  border: none;
  border-radius: 50%;
  background: #eef2f6;
  color: #1e3a5f;
  font-size: 20px;
  cursor: pointer;
}

/* ---------- スタート(レベル選択)モーダル ---------- */
.mbg-level-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}
.mbg-level-btn {
  padding: 16px 8px;
  border: 2px solid #c6d3e0;
  border-radius: 999px;
  background: #fff;
  color: #1e3a5f;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}
.mbg-level-btn small { display: block; font-weight: 400; font-size: 11px; color: #5b7186; margin-top: 2px; }
.mbg-level-btn.mbg-selected {
  background: #1e3a5f;
  border-color: #1e3a5f;
  color: #fff;
}
.mbg-level-btn.mbg-selected small { color: #d4af37; }

.mbg-custom {
  display: none !important;
  gap: 16px;
  justify-content: center;
  margin-bottom: 16px;
}
.mbg-custom.mbg-show { display: flex !important; }
.mbg-custom label { font-weight: 700; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.mbg-custom input {
  width: 80px;
  padding: 10px;
  font-size: 20px;
  text-align: center;
  border: 2px solid #c6d3e0;
  border-radius: 10px;
  color: #1e3a5f;
}

.mbg-start-btn {
  display: block;
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(180deg, #e3c04c, #d4af37);
  color: #1e3a5f;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.15em;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}
.mbg-start-btn:active { transform: scale(0.98); }

/* ---------- 修正: レベル選択画面（最初の設定画面）専用のハンバーガーメニュー ----------
   カードの左上に配置。押すと他の整数関連アプリへのリンク一覧ドロワーが右から開く */
.mbg-app .mbg-menu-btn {
  position: absolute;
  top: 12px; right: 12px; /* 修正: 左上だとタイトルの金色ラインと重なって見えたため右上に変更 */
  z-index: 5;
  width: 40px; height: 40px;
  border: none; border-radius: 50%;
  background: rgba(16,24,46,.78);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background .2s ease;
}
.mbg-app .mbg-menu-btn:hover { background: rgba(60,72,110,.9); }
.mbg-app .mbg-menu-btn-icon { width: 20px; height: 20px; fill: #fff; flex-shrink: 0; }

.mbg-app .mbg-menu-overlay {
  position: fixed; inset: 0; z-index: 1150;
  background: rgba(15, 30, 58, .45);
  opacity: 0; pointer-events: none;
  transition: opacity .2s ease;
}
.mbg-app .mbg-menu-overlay.is-open { opacity: 1; pointer-events: auto; }
.mbg-app .mbg-menu-drawer {
  position: fixed; z-index: 1151; top: 0; right: 0;
  width: min(380px, 90%); height: 100%; height: 100dvh;
  display: flex; flex-direction: column;
  background: #fff; border-left: 1px solid #d7e0eb;
  box-shadow: -12px 0 30px rgba(15, 30, 58, .25);
  transform: translateX(105%);
  transition: transform .25s ease;
  /* 修正: ゲーム画面のダークテーマと切り離し、ドロワー内は可読性優先の白基調で統一 */
  color: #24364d;
  font-family: "BIZ UDGothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  text-align: left;
}
.mbg-app .mbg-menu-drawer.is-open { transform: translateX(0); }
.mbg-app .mbg-menu-header {
  display: flex; align-items: center; gap: 10px;
  min-height: 64px; padding: 12px 14px;
  border-bottom: 1px solid #e5eaf2;
  flex: 0 0 auto;
}
.mbg-app .mbg-menu-heading { flex: 1; margin: 0; color: #1e3a5f; font-size: 18px; font-weight: 900; }
.mbg-app .mbg-menu-close,
.mbg-app .mbg-menu-back {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: 50%;
  background: #f3f6fa; color: #1e3a5f;
  font: inherit; font-size: 20px; cursor: pointer;
}
.mbg-app .mbg-menu-content { flex: 1; overflow-y: auto; padding: 14px; }
.mbg-app .mbg-menu-topic-list,
.mbg-app .mbg-menu-app-list { display: grid; gap: 10px; }
.mbg-app .mbg-menu-topic {
  width: 100%; display: flex; align-items: center; gap: 12px;
  min-height: 58px; padding: 13px 15px;
  border: 1px solid #d7e0eb; border-radius: 16px;
  background: #fff; color: #24364d;
  font: inherit; font-size: 16px; font-weight: 700; text-align: left; cursor: pointer;
}
.mbg-app .mbg-menu-topic:hover { background: #f5f8fb; }
.mbg-app .mbg-menu-topic-name { flex: 1; }
.mbg-app .mbg-menu-topic-count { color: #667085; font-size: 13px; font-weight: 700; }
.mbg-app .mbg-menu-topic-arrow { color: #98a2b3; }
.mbg-app .mbg-menu-app {
  position: relative; display: block;
  padding: 14px 15px; border: 1px solid #d7e0eb; border-radius: 14px;
  background: #fff; color: #24364d;
  text-decoration: none !important;
  font-size: 15px; font-weight: 700; line-height: 1.5;
}
.mbg-app .mbg-menu-app:hover { background: #f5f8fb; }
.mbg-app .mbg-menu-app.is-current {
  padding-right: 66px;
  background: #eef4fb; border-color: #9db7d3; color: #1e3a5f;
  cursor: default;
}
.mbg-app .mbg-menu-current-badge {
  position: absolute; top: 50%; right: 10px; transform: translateY(-50%);
  padding: 3px 7px; border-radius: 999px;
  background: #1e3a5f; color: #fff; font-size: 10px; font-weight: 700;
}
.mbg-app .mbg-menu-empty { padding: 26px 12px; color: #667085; text-align: center; font-size: 14px; }
@media (max-width: 700px) {
  .mbg-app .mbg-menu-drawer { width: min(340px, 94%); }
}

.hidden { display: none !important; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 700px) {
  .mbg-title { font-size: 14px; }
  .mbg-chip { padding: 4px 10px; font-size: 11px; }
  .mbg-chip b { font-size: 14px; }
  .mbg-stage { padding: 8px 76px 8px 8px; }
  .mbg-tool { width: 48px; height: 48px; font-size: 20px; }
  .mbg-level-grid { grid-template-columns: 1fr; }
}