:root {
  color-scheme: dark;
  --ink: #f6f8ff;
  --void: #05070c;
  --blue: #5da8ff;
  --cyan: #7ff4ff;
  --green: #6cf6a3;
  --amber: #ffe184;
  --rose: #ff7b8f;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 45%, rgba(31, 48, 91, 0.38), transparent 34rem),
    radial-gradient(circle at 10% 8%, rgba(44, 130, 255, 0.16), transparent 28rem),
    radial-gradient(circle at 90% 88%, rgba(82, 255, 171, 0.12), transparent 30rem),
    linear-gradient(135deg, #03050a 0%, #080b13 52%, #020308 100%);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.stage {
  position: fixed;
  inset: 0;
  overflow: hidden;
  isolation: isolate;
}

#particle-field {
  position: absolute;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  cursor: none;
}

.vignette,
.grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.vignette {
  z-index: 2;
  background:
    radial-gradient(circle at var(--cursor-x, 50%) var(--cursor-y, 50%), rgba(122, 184, 255, 0.12), transparent 18rem),
    radial-gradient(circle at center, transparent 42%, rgba(0, 0, 0, 0.42) 100%);
  mix-blend-mode: screen;
}

.grain {
  z-index: 3;
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.87' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.48'/%3E%3C/svg%3E");
  background-size: 220px 220px;
  mix-blend-mode: soft-light;
  animation: grainShift 9s steps(8) infinite;
}

@keyframes grainShift {
  0% { transform: translate3d(0, 0, 0); }
  25% { transform: translate3d(-2%, 1%, 0); }
  50% { transform: translate3d(1%, -2%, 0); }
  75% { transform: translate3d(2%, 2%, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

@media (pointer: coarse) {
  #particle-field {
    cursor: auto;
  }
}