* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: radial-gradient(circle at center, #020617, #000);
  color: #e5e7eb;
  font-family: system-ui, sans-serif;
  overflow: hidden;
}

canvas {
  position: fixed;
  inset: 0;
}

.panel {
  position: absolute;
  top: 2rem;
  left: 2rem;
  width: 260px;
  background: linear-gradient(
    135deg,
    rgba(56, 189, 248, 0.15),
    rgba(168, 85, 247, 0.15)
  );
  backdrop-filter: blur(14px);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow:
    0 0 40px rgba(56, 189, 248, 0.4),
    inset 0 0 20px rgba(255, 255, 255, 0.05);
}

h1 {
  font-size: 1.4rem;
  margin-bottom: 0.2rem;
}

p {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.8rem;
  margin-bottom: 0.8rem;
}

select,
input[type="range"] {
  width: 100%;
  margin-top: 0.4rem;
  background: rgba(2, 6, 23, 0.8);
  color: #e5e7eb;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  padding: 0.5rem;
}