:root {
  color-scheme: dark;
  background: #030b1a;
  color: #f5f8ff;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
}

.holding-page {
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
  height: 100vh;
  height: 100dvh;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

.signal-field, .signal-field > div, canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.signal-field {
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 7% 77%, #00ffb209, transparent 45%),
    radial-gradient(ellipse at 92% 36%, #5bbaff0c, transparent 48%),
    #030b1a;
}

canvas {
  opacity: 0;
  transition: opacity 1.8s ease;
}

.webgl-ready canvas { opacity: 1; }

.vignette {
  background:
    radial-gradient(ellipse 32% 36% at 50% 50%, #030b1a99 10%, #030b1a48 70%, transparent 100%),
    radial-gradient(ellipse at 50% 50%, transparent 38%, #030b1a66 80%, #030b1acc 100%);
}

.brand {
  width: min(860px, 82vw, calc((100vh - 40px) * 1.5));
  width: min(860px, 82vw, calc((100dvh - 40px) * 1.5));
  margin: 0;
  line-height: 0;
  user-select: none;
}

.brand img {
  display: block;
  width: 100%;
  height: auto;
}

@media (max-width: 600px) {
  .brand { width: min(100%, calc((100dvh - 40px) * 1.5)); }
  .vignette {
    background:
      radial-gradient(ellipse 65% 24% at 50% 50%, #030b1a99, transparent),
      radial-gradient(ellipse at center, transparent 24%, #030b1a99 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  canvas { transition: none; }
}