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

.game-wrapper {
  width: 360px;
  background: #fff;
  border-radius: 22px;
  padding: 40px 30px;
  box-shadow: 0 20px 50px rgba(0,0,0,.12);
  text-align: center;
}

h1 {
  font-weight: 700;
  margin-bottom: 30px;
}

/* TAP BOX */
.box {
  height: 160px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  user-select: none;
  transition: background .2s ease;
}

.box.idle {
  background: #999;
}

.box.ready {
  background: #2ecc71;
}

.box.too-soon {
  background: #e74c3c;
}

/* STATS */
.stats {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  font-size: .9rem;
  color: #555;
}

.hint {
  margin-top: 18px;
  font-size: .85rem;
  color: #666;
}