body {
  font-family: "Trebuchet MS", sans-serif;
  background: #05080f;
  color: white;
  text-align: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
  box-sizing: border-box;
}

h1 {
  font-size: 2.6rem;
  margin: 0 0 10px 0;
  color: #38bdf8;
  letter-spacing: 3px;
  text-shadow: 0 0 20px #0ea5e9;
}

.scoreboard {
  display: flex;
  gap: 30px;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 15px;
}

#lives {
  color: #f87171;
}

canvas {
  background: #070d1c;
  border: 3px solid #38bdf8;
  border-radius: 8px;
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.3);
}

#message {
  font-size: 1.1rem;
  height: 25px;
  color: #94a3b8;
}

.help {
  color: #64748b;
  font-size: 0.95rem;
  margin: 4px 0;
}

footer {
  margin-top: 20px;
  opacity: 0.6;
}

/* ---- Back button to the arcade menu ---- */
.arcade-back {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(20, 27, 46, 0.85);
  border: 1px solid #3a4568;
  color: #e8ecf8;
  font-family: system-ui, sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  backdrop-filter: blur(4px);
}

.arcade-back:hover {
  background: #ff6b9d;
  border-color: #ff6b9d;
  color: #fff;
}