/* ==============================
   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 {
  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); }

.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; }
}