:root {
  --bg: #0a0a0b;
  --fg: #9b9b9b;
  --fg-bright: #f0f0f0;
  --px: 4px; /* one canvas pixel in CSS px, set from JS */
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  overflow: hidden;
  font-family: "Courier New", ui-monospace, monospace;
}

#stage {
  position: fixed;
  touch-action: none;
}

#stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* The light layer is the one thing allowed to be smooth. */
#stage #light {
  image-rendering: auto;
  image-rendering: smooth;
}

/* Vignette: the room fades into darkness toward the window edges. */
#stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 78% 90% at 50% 50%,
    transparent 52%, rgba(10, 10, 11, 0.45) 78%, rgba(10, 10, 11, 0.85) 100%);
}

/* HTML twin of the drawn name/subtitle/links. Without JS it is simply visible text. */
#overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 12px;
  text-align: center;
  pointer-events: none;
}

#overlay a { color: var(--fg-bright); pointer-events: auto; }

.js #overlay { display: block; place-content: initial; }

.js #overlay h1,
.js #overlay #subtitle span,
.js #overlay a {
  position: absolute;
  display: block;
  margin: 0;
  font-weight: normal;
  white-space: nowrap;
  overflow: hidden;
  color: transparent;
  text-decoration: none;
  letter-spacing: 0;
  text-align: left;
  pointer-events: none;
}

.js #overlay.revealed h1,
.js #overlay.revealed #role span,
.js #overlay.revealed a { pointer-events: auto; }

.js #overlay ::selection { background: rgba(240, 240, 240, 0.28); color: transparent; }

#overlay a:focus-visible {
  outline: 2px solid var(--fg-bright);
  outline-offset: 2px;
}

#replay {
  position: fixed;
  top: max(12px, calc(var(--px) * 3));
  right: max(12px, calc(var(--px) * 3));
  width: max(32px, calc(var(--px) * 9));
  height: max(32px, calc(var(--px) * 9));
  display: grid;
  place-items: center;
  font: inherit;
  font-size: max(16px, calc(var(--px) * 5));
  line-height: 1;
  color: var(--fg-bright);
  background: var(--bg);
  border: 2px solid #535353;
  border-radius: 0;
  cursor: pointer;
}

#replay svg { width: 60%; height: 60%; }
#replay:hover { border-color: var(--fg-bright); }
#replay:focus-visible { outline: 2px solid var(--fg-bright); outline-offset: 2px; }