/* ===== CSS Variables ===== */
:root {
  --bg:           #fef5eb;
  --bg-warm:      #fff8ee;
  --surface:      #ffffff;
  --border:       #e6cdb5;
  --border-dark:  #c9a987;
  --accent:       #f4a8b9;   /* dusty pink */
  --accent2:      #a3d9b1;   /* mint */
  --accent3:      #ffd8a8;   /* peach */
  --gold:         #ffd166;
  --silver:       #e0e0e0;
  --bronze:       #d4a373;
  --text:         #5d4e37;   /* warm brown */
  --text-mid:     #8b7355;
  --text-dim:     #b9a896;

  /* フェルト調パステル テトリミノカラー */
  --color-I: #a0d8e8;
  --color-O: #ffe4a3;
  --color-T: #d4b0e0;
  --color-S: #b5e0c0;
  --color-Z: #f7b8b8;
  --color-J: #b0c4e0;
  --color-L: #f5c89a;
  --color-G: #d4c5b9;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'M PLUS Rounded 1c', sans-serif;
  font-weight: 500;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-image:
    radial-gradient(circle at 25% 25%, rgba(244,168,185,0.18) 3px, transparent 4px),
    radial-gradient(circle at 75% 75%, rgba(163,217,177,0.16) 3px, transparent 4px),
    radial-gradient(circle at 50% 50%, rgba(176,196,224,0.14) 2px, transparent 3px);
  background-size: 60px 60px, 60px 60px, 40px 40px;
}

/* ===== Home Back Link ===== */
.home-back {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 10;
  font-family: 'M PLUS Rounded 1c', sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--text-mid);
  text-decoration: none;
  padding: 8px 16px;
  border: 2.5px dashed var(--border-dark);
  background: var(--surface);
  border-radius: 999px;
  transition: all 0.2s;
  box-shadow: 0 3px 0 var(--border-dark);
}
.home-back:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 5px 0 var(--accent);
}
.home-back:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 var(--accent);
}

/* ===== App Layout ===== */
#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  position: relative;
  z-index: 1;
}

header h1 {
  font-family: 'Fredoka', 'M PLUS Rounded 1c', sans-serif;
  font-weight: 700;
  font-size: 2.4rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-align: center;
  text-shadow: 2px 2px 0 var(--surface), 3px 3px 0 var(--border-dark);
}
header h1::before {
  content: '✿ ';
  color: var(--accent2);
  font-size: 0.8em;
}
header h1::after {
  content: ' ✿';
  color: var(--accent2);
  font-size: 0.8em;
}

/* ===== Game Area ===== */
#game-area {
  display: flex;
  align-items: flex-start;
  gap: 22px;
}

/* ===== Side Panels ===== */
aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 164px;   /* キャンバス120pxを完全に内側に収める幅 */
}

.panel-block {
  background: var(--surface);
  border: 2.5px dashed var(--border-dark);
  border-radius: 18px;
  padding: 14px 16px;
  position: relative;
  box-shadow: 0 4px 0 var(--border-dark), 0 6px 16px rgba(125,90,60,0.08);
}

/* ぽち（ボタン風アクセント） */
.panel-block::before {
  content: '';
  position: absolute;
  top: -7px;
  right: 14px;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 2.5px var(--surface), 0 2px 0 var(--border-dark);
}

.label {
  font-family: 'Fredoka', 'M PLUS Rounded 1c', sans-serif;
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-mid);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.value {
  font-family: 'Fredoka', 'M PLUS Rounded 1c', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text);
  word-break: break-all;
  transition: color 0.3s;
}

/* ハイスコア更新時の演出 */
@keyframes hi-score-glow {
  0%, 100% {
    color: var(--accent);
    text-shadow: 0 0 8px var(--accent), 0 0 16px rgba(244,168,185,0.6);
    transform: scale(1);
  }
  50% {
    color: #f8b500;
    text-shadow: 0 0 14px var(--gold), 0 0 24px var(--gold), 0 0 36px rgba(255,209,102,0.7);
    transform: scale(1.05);
  }
}
.value.hi-score {
  animation: hi-score-glow 0.9s ease-in-out infinite;
}

/* HOLD / NEXT キャンバス（中央配置） */
#hold-canvas,
#next-canvas {
  display: block;
  margin: 8px auto 0;
  background: var(--bg-warm);
  border-radius: 12px;
  box-sizing: content-box;   /* 内部解像度120pxを縮ませない */
  /* 二重枠を避けるためキャンバス自体のボーダーは外す
     パネルブロック側の破線枠＋背景色の差で視覚的にフレームを表現 */
}

/* ホールド使用済みのときは少し薄く */
#hold-canvas.disabled {
  opacity: 0.45;
}

/* ===== ハイスコア TOP3 ===== */
.high-scores {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.hi-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Fredoka', 'M PLUS Rounded 1c', sans-serif;
}
.hi-row .rank {
  font-weight: 700;
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  padding: 2px 7px;
  border-radius: 8px;
  box-shadow: 0 2px 0 rgba(125,90,60,0.25);
  color: var(--text);
  flex-shrink: 0;
  min-width: 30px;
  text-align: center;
}
.rank-1 .rank { background: var(--gold); }
.rank-2 .rank { background: var(--silver); }
.rank-3 .rank { background: var(--bronze); color: #fff; }
.hi-row .score {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.hi-row.is-new .score {
  color: var(--accent);
  animation: hi-score-glow 0.9s ease-in-out infinite;
}

/* コントロール情報 */
.controls-info { gap: 4px; }
.control-item {
  font-size: 0.78rem;
  color: var(--text-mid);
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 5px;
  font-weight: 500;
}
.key {
  background: var(--accent3);
  color: var(--text);
  padding: 2px 8px;
  font-family: 'Fredoka', sans-serif;
  font-weight: 700;
  font-size: 0.7rem;
  border-radius: 8px;
  min-width: 34px;
  text-align: center;
  box-shadow: 0 2px 0 rgba(125,90,60,0.25);
}

/* ===== Board Wrapper ===== */
#board-wrapper {
  position: relative;
  border: 3px dashed var(--border-dark);
  border-radius: 20px;
  overflow: hidden;
  background: var(--bg-warm);
  box-shadow: 0 6px 0 var(--border-dark), 0 10px 24px rgba(125,90,60,0.10);
}

#board {
  display: block;
}

/* ===== Overlay ===== */
.overlay {
  position: absolute;
  inset: 0;
  background: rgba(254, 245, 235, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.overlay-content {
  text-align: center;
}

.overlay-title {
  font-family: 'Fredoka', 'M PLUS Rounded 1c', sans-serif;
  font-weight: 700;
  font-size: 2.2rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-shadow: 2px 2px 0 var(--surface), 3px 3px 0 var(--border-dark);
  margin-bottom: 22px;
  animation: bounce 1.4s ease-in-out infinite;
}

.overlay-sub {
  font-family: 'M PLUS Rounded 1c', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-mid);
  letter-spacing: 0.1em;
  animation: blink 1.2s step-end infinite;
}

/* ===== Animations ===== */
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

/* ===== Garbage Warning Flash ===== */
@keyframes flash-pink {
  0%   { box-shadow: 0 0 0 6px var(--accent), 0 6px 0 var(--border-dark), 0 10px 24px rgba(125,90,60,0.10); }
  100% { box-shadow: 0 6px 0 var(--border-dark), 0 10px 24px rgba(125,90,60,0.10); }
}

#board-wrapper.garbage-flash {
  animation: flash-pink 0.55s ease-out forwards;
}