/**
 * テトリス（MiniMax M3.1 Flash 版）のスタイル
 * ------------------------------------------------------------------
 * この CSS はこの版のページだけで読み込まれる。共通テーマ (common/theme.css) は
 * 変えず、body:has(.mxt) で背景・ヘッダー・main を上書きする。
 * クラス名は mxt- 接頭辞にして、他ページと衝突させない。
 */

body:has(.mxt) {
  background:
    radial-gradient(1100px 560px at 50% -12%, rgba(78, 120, 255, 0.28), transparent 62%),
    radial-gradient(760px 460px at 88% 112%, rgba(52, 214, 220, 0.16), transparent 60%),
    #070b16;
  background-attachment: fixed;
  color: #e6efff;
}

body:has(.mxt) body>header {
  max-width: none;
  margin: 0;
  padding: 8px 14px;
  background: rgba(7, 11, 22, 0.55);
  border-bottom: 1px solid rgba(120, 170, 255, 0.14);
}

body:has(.mxt) body>header a {
  color: #cfe2ff;
  letter-spacing: 0.12em;
  font-size: 0.86rem;
}

body:has(.mxt) main {
  max-width: 560px;
  margin: 0 auto;
  padding: 14px 12px 28px;
  background: transparent;
  border-radius: 0;
}

/* ------------------------------------------------------------------
   全体
   ------------------------------------------------------------------ */
.mxt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-variant-numeric: tabular-nums;
}

.mxt-top {
  width: 100%;
  max-width: 520px;
}

.mxt-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  color: #eaf3ff;
  text-shadow: 0 0 18px rgba(94, 231, 255, 0.35);
}

.mxt-tag {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: #7fd7ff;
  border: 1px solid rgba(127, 215, 255, 0.38);
  border-radius: 999px;
  padding: 3px 9px;
  text-shadow: none;
}

.mxt-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.mxt-stat {
  background: rgba(19, 28, 56, 0.62);
  border: 1px solid rgba(120, 170, 255, 0.16);
  border-radius: 12px;
  padding: 7px 9px;
  min-width: 0;
}

.mxt-k {
  display: block;
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  color: #8ea5d6;
}

.mxt-v {
  display: block;
  font-size: 1.02rem;
  font-weight: 700;
  color: #f2f8ff;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ------------------------------------------------------------------
   盤面
   ------------------------------------------------------------------ */
.mxt-board {
  position: relative;
  line-height: 0;
  touch-action: none;
}

.mxt-board canvas {
  display: block;
  border-radius: 14px;
  box-shadow:
    0 18px 44px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(120, 170, 255, 0.16);
}

.mxt-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(5, 8, 18, 0.8);
  backdrop-filter: blur(3px);
  line-height: 1.7;
}

.mxt-overlay[hidden] {
  display: none;
}

.mxt-overlay-inner {
  text-align: center;
  padding: 18px;
  max-width: 92%;
}

.mxt-overlay-title {
  margin: 0 0 8px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #eaf3ff;
}

.mxt-overlay-text {
  margin: 0 0 16px;
  font-size: 0.8rem;
  color: #a9bde8;
}

.mxt-overlay-button {
  font: inherit;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 26px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  color: #04121a;
  background: linear-gradient(120deg, #5ee7ff, #7c9cff);
  box-shadow: 0 8px 22px rgba(94, 231, 255, 0.22);
}

.mxt-overlay-button:active {
  transform: translateY(1px);
}

/* ------------------------------------------------------------------
   画面ボタン（タッチ端末・狭い画面）
   ------------------------------------------------------------------ */
.mxt-pad {
  display: none;
  width: 100%;
  max-width: 520px;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  touch-action: manipulation;
}

@media (hover: none), (pointer: coarse), (max-width: 820px) {
  .mxt-pad {
    display: grid;
  }
}

.mxt-pad button {
  font: inherit;
  font-size: 1.15rem;
  line-height: 1;
  padding: 0;
  height: 54px;
  color: #dbe8ff;
  background: rgba(24, 34, 66, 0.8);
  border: 1px solid rgba(120, 170, 255, 0.22);
  border-radius: 12px;
  cursor: pointer;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.mxt-pad button:active {
  background: rgba(94, 231, 255, 0.22);
  border-color: rgba(94, 231, 255, 0.5);
}

/* ------------------------------------------------------------------
   補足
   ------------------------------------------------------------------ */
.mxt-help {
  margin: 0;
  max-width: 520px;
  text-align: center;
  font-size: 0.7rem;
  line-height: 1.8;
  color: #8ea5d6;
}

.mxt-warning {
  margin: 0;
  font-size: 0.72rem;
  text-align: center;
  color: #ffcf8a;
}

.mxt-warning[hidden] {
  display: none;
}

@media (max-width: 400px) {
  body:has(.mxt) main {
    padding: 10px 8px 20px;
  }

  .mxt-title {
    font-size: 1.1rem;
    letter-spacing: 0.16em;
  }

  .mxt-stat {
    padding: 6px 7px;
  }

  .mxt-v {
    font-size: 0.94rem;
  }

  .mxt-pad button {
    height: 50px;
    font-size: 1rem;
  }
}

/* 視差効果を減らす設定のときは、点滅などの演出を止める */
@media (prefers-reduced-motion: reduce) {
  .mxt-overlay {
    backdrop-filter: none;
  }
}