body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: radial-gradient(circle at center, #111, #000);
  overflow: hidden;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.game-container {
  text-align: center;
  width: 90vw;
  height: 90vh;
  position: relative;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  padding: 10px 20px;
  border-radius: 10px;
  backdrop-filter: blur(5px);
}

button {
  background: linear-gradient(135deg, #00c3ff, #0078ff);
  border: none;
  padding: 8px 14px;
  color: white;
  font-size: 16px;
  margin: 0 5px;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: linear-gradient(135deg, #00ffbf, #00b4ff);
  box-shadow: 0 0 10px #00ffbf;
}

#bridgeCanvas {
  background: url('https://images.unsplash.com/photo-1503264116251-35a269479413?auto=format&fit=crop&w=800&q=80') center/cover;
  display: block;
  margin: 20px auto;
  border: 2px solid #0ff;
  border-radius: 10px;
  box-shadow: 0 0 20px #0ff;
}

#status {
  margin-top: 10px;
}

.glow-line {
  stroke: #00ffff;
  stroke-width: 5;
  filter: drop-shadow(0 0 6px cyan);
}