:root {
  color-scheme: dark;
  font-family: "DejaVu Sans Mono", "Liberation Mono", monospace;
  --ink: #030609;
  --panel: #091018;
  --line: #24445a;
  --text: #e8edf0;
  --muted: #7890a0;
  --signal: #f0d900;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  color: var(--text);
  background: var(--ink);
}

button,
a {
  color: inherit;
  font: inherit;
}

.bar {
  position: fixed;
  z-index: 5;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  background: rgb(3 6 9 / 94%);
}

.identity,
.actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.identity > span:last-child {
  display: grid;
}

.identity strong {
  font-size: .72rem;
  letter-spacing: .05em;
}

.identity small,
.actions > span {
  color: var(--muted);
  font-size: .56rem;
  letter-spacing: .08em;
}

.signal {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 12px rgb(240 217 0 / 72%);
}

.actions button,
.actions a {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: .62rem;
  text-decoration: none;
  cursor: pointer;
}

.actions button:hover,
.actions a:hover {
  border-color: #4f7b98;
  background: #10202d;
}

.stage {
  display: grid;
  width: 100%;
  height: 100%;
  padding: 70px 16px 16px;
  place-items: center;
  background:
    radial-gradient(circle at 50% 48%, rgb(36 68 90 / 20%), transparent 52%),
    #030609;
}

.runtime-frame {
  position: relative;
  display: grid;
  width: min(1920px, calc((100vh - 86px) * 16 / 9), calc(100vw - 32px));
  aspect-ratio: 16 / 9;
  overflow: hidden;
  place-items: center;
  border: 1px solid var(--line);
  background: #000;
  box-shadow: 20px 20px 0 rgb(0 0 0 / 28%);
}

#game-canvas {
  position: absolute;
  display: block;
  width: 100%;
  height: 100%;
  outline: 0;
  background: #000;
}

.loading {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  gap: 9px;
  color: var(--text);
  text-align: center;
  pointer-events: none;
}

.loading strong {
  font-size: clamp(.8rem, 1.5vw, 1.1rem);
  letter-spacing: .16em;
}

.loading span {
  color: var(--muted);
  font-size: .62rem;
}

.chicken {
  color: var(--signal);
  font-size: 1.8rem;
  animation: bob 800ms steps(2, end) infinite;
}

.runtime-frame[data-state="running"] .loading {
  display: none;
}

.runtime-frame[data-state="error"] .loading .chicken {
  color: #e66b54;
  animation: none;
}

.runtime-frame:fullscreen {
  width: 100vw;
  height: 100vh;
  aspect-ratio: auto;
  border: 0;
  box-shadow: none;
}

.runtime-frame:fullscreen #game-canvas {
  width: min(100vw, calc(100vh * 16 / 9));
  height: min(100vh, calc(100vw * 9 / 16));
}

@keyframes bob {
  50% {
    transform: translateY(-6px);
  }
}

@media (max-width: 820px) {
  .identity small,
  .actions > span,
  .actions a {
    display: none;
  }

  .bar {
    gap: 6px;
  }

  .actions {
    gap: 5px;
  }

  .stage {
    padding: 66px 6px 6px;
  }

  .runtime-frame {
    width: min(calc((100vh - 72px) * 16 / 9), calc(100vw - 12px));
  }
}