:root {
  --art-paper: #f6f3ef;
  --ink-1: 232;
  --ink-2: 292;
  --ink-3: 205;
}

@media (prefers-color-scheme: dark) {
  :root {
    --panel-bg: #1b1b1b;
    --art-paper: #4a4a4f;
  }
}

.shell {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: 24px;
  inline-size: 100%;
  padding: 24px clamp(1rem, 4vw, 2rem);
  box-sizing: border-box;
  align-items: center;
}

.shell > * {
  min-width: 0;
}

.frame {
  width: min(100%, 760px);
  aspect-ratio: 1;
  padding: 4.5%;
  box-sizing: border-box;

  display: grid;
  place-items: center;
  justify-self: center;
}

.frame canvas {
  width: 100%;
  height: 100%;
  display: block;
}

#art {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 4px;
  background: #fff;
}

@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
    align-items: start;
  }

  .panel {
    position: static;
    inline-size: 100%;
    max-inline-size: 320px;
    margin-inline: auto;
  }

  .frame {
    width: 100%;
    max-width: 640px;
  }
}