body {
  font-family: Arial, sans-serif;
  background: #0b0c10;
  color: #fff;
  text-align: center;
  padding: 2rem;
}

h1 {
  margin-bottom: 1.5rem;
  color: #00ffff;
}

#collider {
  background: #1f2833;
  padding: 1.5rem;
  border-radius: 12px;
  display: inline-block;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}

label {
  display: block;
  margin: 0.5rem 0 0.25rem;
}

select, button, input[type="range"] {
  font-size: 1rem;
  padding: 0.5rem;
  margin-bottom: 1rem;
}

button {
  background-color: #45a29e;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

canvas {
  margin-top: 1rem;
  background-color: #0f172a;
  border: 2px solid #333;
  border-radius: 10px;
}

#result {
  margin-top: 1.5rem;
  font-size: 1.3rem;
  color: #66fcf1;
}