* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #0d0d11;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #ffffff;
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
}

#ui-container {
  position: absolute;
  top: 24px;
  left: 24px;
  z-index: 10;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  padding: 20px 28px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  max-width: 380px;
}

#ui-container h1 {
  font-size: 1.25rem;
  margin: 0 0 8px 0;
  color: #64ffda;
}

#ui-container p {
  font-size: 0.9rem;
  margin: 0 0 16px 0;
  color: #a0aec0;
  line-height: 1.4;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-group label {
  font-size: 0.85rem;
  color: #e2e8f0;
}

input[type="range"] {
  accent-color: #64ffda;
  cursor: pointer;
}