body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(180deg, #ffffff, #f5faff);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

.game-wrapper {
  background: #fff;
  padding: 28px;
  border-radius: 22px;
  box-shadow: 0 20px 50px rgba(0,0,0,.12);
  width: 400px;
  max-width: calc(100% - 24px);
  text-align: center;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-weight: 600;
  color: #333;
}

canvas {
  background: #111;
  border-radius: 12px;
  display: block;
  margin: 10px auto 15px;
  outline: none;
}

canvas:focus {
  box-shadow: 0 0 0 3px rgba(74,144,226,.5);
}

.hint {
  font-size: .85rem;
  color: #666;
}