/**
 * game-shell.css — プレイ画面のモバイルシェル（HUD・プレイ列・HOLD・#mobile-game）
 *
 * 責務:
 *   - #game-screen 内 .game-layout-mobile ツリーのレイアウトと余白トークン（--shell-*）
 *   - 狭画面時の .game-layout-mobile の表示切替
 *   - 三行（ヘッダー / 盤 / HOLD）の左右インセットは --shell-mobile-inline-pad で揃える
 *
 * 含めない（style.css / JS 側の責務）:
 *   - env(safe-area-*): style.css の .screen のみ（このファイルでは使わない）
 *   - テーマ色・ガラス色・--board-bg: :root / body.theme-dark（style.css）
 *   - キャンバス像素・グリッド: adjustMobileCanvasSize 等（tetris-game.js）
 *   - .tap-zones の幾何（style.css、ゲームと共有）
 */

:root {
  --shell-play-column-max-w: 520px;
  --shell-play-column-gap: 8px;
  --shell-header-grid-gap-x: 10px;
  --shell-header-grid-gap-y: 8px;
  /* ヘッダー・盤エリア・HOLD で共通（行ごとに幅がズレないようにする） */
  --shell-mobile-inline-pad: 12px;
  --shell-game-area-pad-v: 6px;
  --shell-game-area-pad: var(--shell-game-area-pad-v) var(--shell-mobile-inline-pad);
  --shell-mobile-header-pad: 12px var(--shell-mobile-inline-pad) 10px;
  --shell-hold-bar-padding: 6px var(--shell-mobile-inline-pad) 10px;
}

/* スマホ版：ヘッダー / 盤面 / HOLD の三行グリッド（PC 時は非表示） */
.game-layout-mobile {
  display: none;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: minmax(0, 1fr);
  width: 100%;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.mobile-header {
  flex-shrink: 0;
  background: var(--glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--shell-mobile-header-pad);
  box-sizing: border-box;
}

.mobile-header-grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--shell-header-grid-gap-y) var(--shell-header-grid-gap-x);
  align-items: center;
  width: 100%;
  max-width: var(--shell-play-column-max-w);
  margin: 0 auto;
}

.mobile-header-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px 6px;
  min-width: 0;
  align-items: end;
}

.mobile-header-next {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-shrink: 0;
}

.mobile-pause-bar-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 2px solid var(--primary);
  background: rgba(61, 107, 138, 0.1);
  color: var(--primary);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 2px 8px rgba(61, 107, 138, 0.15);
}

.mobile-pause-bar-btn:active {
  opacity: 0.88;
  transform: scale(0.98);
}

body.theme-dark .mobile-pause-bar-btn {
  background: rgba(15, 30, 50, 0.85);
  border-color: rgba(45, 212, 191, 0.55);
  color: var(--primary);
  box-shadow: 0 0 12px rgba(45, 212, 191, 0.15);
}

.mobile-score,
.mobile-high,
.mobile-level,
.mobile-lines,
.mobile-hold-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.mobile-hold-slot {
  flex-shrink: 0;
}

.mobile-hold-preview {
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
  padding: 2px 0;
}

.mobile-hold-preview canvas {
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--board-bg, #000);
  box-shadow: var(--shadow);
}

.mobile-hold-preview:active {
  opacity: 0.85;
}

.mobile-score span,
.mobile-high span,
.mobile-level span,
.mobile-lines span {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--text);
}

.mobile-score span {
  font-size: 1.7rem;
  color: var(--primary);
  text-shadow: var(--score-keys-shadow);
  letter-spacing: -0.02em;
  line-height: 1.05;
  display: inline-block;
}

.mobile-level span {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.15;
  box-shadow: none;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
}

.mobile-high span,
.mobile-lines span {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
}

.mobile-header-next canvas {
  display: block;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  box-shadow: var(--shadow);
}

.mobile-header small {
  font-size: 0.62rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mobile-pause-bar-btn .pause-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-pause-bar-btn .pause-icon svg {
  display: block;
}

/* 盤面エリア（グリッド中央行）。HOLD は .game-layout-mobile の最下行 */
.mobile-game-area {
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: var(--shell-game-area-pad);
  overflow: hidden;
  position: relative;
}

.mobile-play-column {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  max-width: var(--shell-play-column-max-w);
  margin: 0 auto;
}

/* 列は stretch だが、水色背景はキャンバス幅にだけ付く（枠より横に広がらない） */
.mobile-board-with-panels {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  align-self: center;
  width: fit-content;
  max-width: 100%;
  min-height: 0;
  flex: 1;
  overflow: hidden;
  background: var(--board-bg);
  border-radius: 10px;
}

.mobile-board-with-panels .game-area {
  position: relative;
  flex: 0 1 auto;
  min-width: 0;
  min-height: 0;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.mobile-hold-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: var(--shell-hold-bar-padding);
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  box-shadow: var(--shadow);
}

.mobile-hold-bar-btn {
  width: 100%;
  min-height: 48px;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(61, 107, 138, 0.12);
  border: 2px solid var(--primary);
  border-radius: 10px;
  cursor: pointer;
  color: var(--primary);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  font-family: 'JetBrains Mono', monospace;
  -webkit-tap-highlight-color: transparent;
}

.mobile-hold-bar-btn:active {
  opacity: 0.85;
  transform: scale(0.99);
}

.mobile-hold-bar .mobile-hold-preview {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  min-height: 48px;
  padding: 4px 8px;
  cursor: pointer;
  border-radius: 10px;
  border: 2px solid var(--primary);
  background: rgba(61, 107, 138, 0.08);
}

.mobile-hold-bar-hint {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

body.theme-dark .mobile-hold-bar {
  background: rgba(7, 16, 32, 0.92);
  border-color: rgba(45, 212, 191, 0.35);
}

body.theme-dark .mobile-hold-bar-btn,
body.theme-dark .mobile-hold-bar .mobile-hold-preview {
  background: rgba(15, 30, 50, 0.9);
  border-color: rgba(45, 212, 191, 0.55);
  color: var(--primary);
}

.side-label {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: 'JetBrains Mono', monospace;
}

#mobile-game {
  aspect-ratio: 1 / 2;
  max-width: 100%;
  max-height: 100%;
  border: 2px solid var(--secondary);
  border-radius: 8px;
  box-shadow: var(--glow-primary), var(--shadow);
  background: transparent;
  display: block;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .game-layout-mobile {
    display: grid !important;
  }

  /* インライン指定の width/height（JS）を aspect-ratio が狭めないようにする */
  #mobile-game {
    aspect-ratio: auto;
  }

  .mobile-header small {
    font-size: 0.75rem;
  }

  .mobile-score span,
  .mobile-high span,
  .mobile-level span,
  .mobile-lines span {
    font-size: 1.2rem;
  }
}

@media (max-width: 430px) and (min-height: 900px) {
  :root {
    --shell-mobile-header-pad: 10px var(--shell-mobile-inline-pad) 8px;
    --shell-game-area-pad: var(--shell-game-area-pad-v) var(--shell-mobile-inline-pad);
  }
}

@media (max-width: 480px) {
  :root {
    --shell-mobile-inline-pad: 10px;
    --shell-mobile-header-pad: 10px var(--shell-mobile-inline-pad) 8px;
    --shell-game-area-pad: var(--shell-game-area-pad-v) var(--shell-mobile-inline-pad);
  }
}

@media (max-width: 768px) and (orientation: landscape) {
  :root {
    --shell-mobile-header-pad: 6px var(--shell-mobile-inline-pad) 6px;
    --shell-game-area-pad: var(--shell-game-area-pad-v) var(--shell-mobile-inline-pad);
  }
}

body.theme-dark .mobile-header {
  background: rgba(7, 16, 32, 0.97);
  border-bottom: 1px solid rgba(45, 212, 191, 0.35);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.7);
}