:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --text: #f5f5f0;
  --toggle-bg: #f5f5f0;
  --toggle-text: #0a0a0a;
  --toggle-border: #f5f5f0;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f5f0;
  --text: #111111;
  --toggle-bg: #111111;
  --toggle-text: #f5f5f0;
  --toggle-border: #111111;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
}

.hero__title {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#scene-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.controls {
  position: fixed;
  top: clamp(0.75rem, 3vw, 1.5rem);
  right: clamp(0.75rem, 3vw, 1.5rem);
  z-index: 10;
  display: flex;
  gap: 0.65rem;
}

.control-toggle {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border: 2px solid var(--toggle-border);
  border-radius: 999px;
  background: var(--toggle-bg);
  color: var(--toggle-text);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  transition: transform 0.15s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.control-toggle:hover {
  transform: scale(1.05);
}

.control-toggle:focus-visible {
  outline: 3px solid var(--text);
  outline-offset: 3px;
}

.viz-toggle--active .viz-toggle__icon {
  display: inline-block;
  animation: viz-pulse 0.55s ease-in-out infinite alternate;
}

@keyframes viz-pulse {
  from {
    transform: scaleY(0.75);
  }

  to {
    transform: scaleY(1.15);
  }
}