body {
  margin: 0;
  height: 100vh;
  background: radial-gradient(circle at center, #0f172a, #1e3a8a);
  font-family: "Poppins", sans-serif;
  color: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
}

.game-container {
  text-align: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 0 25px rgba(59, 130, 246, 0.5);
  width: 350px;
}

h1 {
  margin-bottom: 10px;
  color: #93c5fd;
  text-shadow: 0 0 15px #60a5fa;
}

.pads {
  display: grid;
  grid-template-columns: repeat(2, 120px);
  gap: 20px;
  justify-content: center;
  margin: 20px 0;
}

.pad {
  width: 100px;
  height: 100px;
  border-radius: 15px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

#pad1 { background: #ef4444; }
#pad2 { background: #facc15; }
#pad3 { background: #22c55e; }
#pad4 { background: #3b82f6; }

.pad.active {
  box-shadow: 0 0 30px white;
  transform: scale(1.1);
  opacity: 0.9;
}

button {
  background: linear-gradient(90deg, #3b82f6, #2563eb);
  border: none;
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  margin: 5px;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}