#sokoban-container {
  text-align: center;
  color: #000;
  font-family: sans-serif;
  background: white;
  padding: 10px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}
#board {
  display: grid;
  gap: 2px;
  margin-top: 10px;
  justify-content: center;
}
.tile {
  width: 20px;
  height: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  border-radius: 4px;
}
.wall   { background: #444; }
.box    { background: black; }
.goal   { background: seagreen; }
.player { background: dodgerblue; }
.empty  { background: #eee; }
#analytics {
  margin-top: 10px;
  border-top: 1px solid #555;
  padding-top: 10px;
  width: 250px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}
progress { margin-top: 10px; }