:root {
  --bg: radial-gradient(circle at center, #0ea5e9, #1e3a8a);
  --bubble: #60a5fa;
  --glow: #3b82f6;
  --text: #dbeafe;
  font-family: "Poppins", sans-serif;
}

body {
  background: var(--bg);
  height: 100vh;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  text-align: center;
  width: 360px;
}

h1 {
  color: var(--text);
  text-shadow: 0 0 15px var(--glow);
}

#status {
  color: #bae6fd;
  margin-bottom: 10px;
}

#gameArea {
  position: relative;
  width: 320px;
  height: 400px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  margin: 0 auto 15px;
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.4);
}

.bubble {
  position: absolute;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #93c5fd, #3b82f6);
  box-shadow: 0 0 20px var(--glow);
  opacity: 0.8;
  animation: floatUp 5s linear forwards;
  cursor: pointer;
}

@keyframes floatUp {
  from {
    bottom: -40px;
  }
  to {
    bottom: 420px;
  }
}

.scoreboard {
  display: flex;
  justify-content: space-around;
  color: var(--text);
  margin-bottom: 10px;
  font-weight: 600;
}

.controls button {
  background: linear-gradient(90deg, #60a5fa, #3b82f6);
  border: none;
  color: white;
  padding: 10px 15px;
  font-size: 1rem;
  border-radius: 8px;
  margin: 5px;
  cursor: pointer;
  font-weight: 600;
}

.controls button:disabled {
  opacity: 0.5;
}