:root {
  color-scheme: dark;
  --acid: #d8ff3e;
  --background: #070708;
  --ink: #f2f0e9;
}

* { box-sizing: border-box; }

html,
body,
main {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--background);
}

body { min-width: 280px; }

#visualizer {
  position: fixed;
  inset: 0;
  display: block;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at center, #0d0d11 0, var(--background) 68%);
}

#visualizer[data-visualization="1"],
#visualizer[data-visualization="1-hsl"] {
  inset: 1rem;
  width: calc(100vw - 2rem);
  height: calc(100vh - 2rem);
}

.audio-gate {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 2;
  min-width: 310px;
  padding: 18px 22px;
  border: 1px solid rgba(216, 255, 62, .52);
  color: #080809;
  background: var(--acid);
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
}

.audio-gate:hover:not(:disabled) {
  transform: translate(-50%, calc(-50% - 3px));
  box-shadow: 0 14px 48px rgba(216, 255, 62, .16);
}

.audio-gate:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 5px;
}

.audio-gate:disabled { cursor: wait; opacity: .65; }

.audio-gate strong,
.audio-gate span {
  display: block;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  text-align: center;
}

.audio-gate strong {
  font-size: 11px;
  letter-spacing: .12em;
}

.audio-gate span {
  margin-top: 5px;
  opacity: .62;
  font-size: 9px;
}

html.capture-pending .audio-gate,
body.capture-starting .audio-gate,
body.started .audio-gate { display: none; }

@media (max-width: 420px) {
  .audio-gate { width: calc(100vw - 36px); min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .audio-gate { transition: none; }
}