body {
  /* font-family: 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif; */
  font-family: 'Zen Maru Gothic', sans-serif;
  background: linear-gradient(to bottom, #eaf6ff, #ffffff);
  text-align: center;
  padding: 20px;
  color: #444;
}

h1 {
  display: flex;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 10px;
  color: #336699;
}

#layout {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto 20px;
}

#left-panel,
#center-panel,
#right-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#left-panel,
#right-panel {
  height: 470px;
}


#bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bar {
  width: 140px;
  text-align: left;
  font-size: 13px;
  color: #336699;
}

.progress {
  height: 10px;
  background-color: #d0e0ff;
  border-radius: 5px;
  margin-top: 5px;
  transition: width 0.3s ease;
}

#explain {
  margin-top: auto;
  padding-bottom: 20px;
}
#rainbow-container {
  margin-bottom: 10px;
}

#rainbow-icon {
  max-width: 140px;
  height: auto;
}

/* グリッド */
#grid {
  display: grid;
  grid-template-columns: repeat(7, 60px);
  grid-template-rows: repeat(7, 60px);
  gap: 6px;
  justify-content: center;
  margin-bottom: 20px;
}

.grid-cell {
  width: 60px;
  height: 60px;
  background-color: #f0f8ff;
  border-radius: 12px;
  box-shadow: inset 0 0 4px rgba(0,0,0,0.05);
  position: relative;
}

/* アイテム */
.item {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  transition: transform 0.3s ease;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

/* 雲と削除エリア（さらに大きく） */
#cloud {
  width: 100px;
  height: 100px;
  background-image: url('assets/images/cloud.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  animation: float 3s infinite ease-in-out;
  cursor: pointer;
}

#delete-zone {
  width: 100px;
  height: 100px;
  background-image: url('assets/images/wind.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  border-radius: 12px;
}

/* ラベル */
.label {
  font-size: 13px;
  color: #666;
  margin-top: 6px;
}

/* コントロールボタン（縦並び） */
#controls {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 30%;
  margin-bottom: 30%;
}

#controls button {
  font-size: 14px;
  padding: 6px 12px;
  border: none;
  border-radius: 12px;
  background-color: #e0f0ff;
  color: #336699;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: background-color 0.3s ease;
}

#controls button:hover {
  background-color: #c0e0ff;
}

/* メッセージ */
#message {
  margin: 10px auto 20px;
  font-size: 14px;
  color: #666;
  /* font-style: italic; */
}

@media screen and (max-width: 600px) {
  /* レイアウトを縦並びに */
  #layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  /* グリッドのサイズを小さく */
  #grid {
    grid-template-columns: repeat(7, 40px);
    grid-template-rows: repeat(7, 40px);
    gap: 4px;
  }

  .grid-cell {
    width: 40px;
    height: 40px;
  }

  .item {
    border-radius: 8px;
  }

  /* 雲と削除エリアを少し縮小 */
  #cloud,
  #delete-zone {
    width: 80px;
    height: 80px;
  }

  /* 虹アイコンも少し小さく */
  #rainbow-icon {
    max-width: 60px;
  }

  /* ボタンのサイズ調整 */
  #controls button {
    font-size: 12px;
    padding: 5px 10px;
  }

  /* メッセージの余白調整 */
  #message {
    font-size: 13px;
    margin-top: 10px;
  }
}