body {
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: black;
  user-select: none;
  -webkit-user-select: none;
  overscroll-behavior: none;
  touch-action: none;
}

a-waves {
  --x: -0.5rem;
  --y: 50%;
  position: absolute;
  top: 0;
  left: 0;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

a-waves:before {
  position: absolute;
  top: 0;
  left: 0;
  width: 0.5rem;
  height: 0.5rem;
  background: #160000;
  border-radius: 50%;
  transform: translate3d(calc(var(--x) - 50%), calc(var(--y) - 50%), 0);
  will-change: transform;
  content: "";
}

a-waves canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.nav-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  gap: 10px;
}

.nav-btn {
  width: 40px;
  height: 40px;
  background: white;
  color: #333;
  border-radius: 50%;
  text-decoration: none;
  font-family: sans-serif;
  font-weight: bold;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s, background 0.2s;
}

.nav-btn:hover {
  transform: scale(1.1);
  background: #f0f0f0;
}