* { box-sizing: border-box; }

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

body {
  display: flex;
  flex-direction: column;
  font-family: system-ui, sans-serif;
  background: #fdfdfc;
  color: #1c1c22;
}

#stage {
  flex: 1;
  overflow: auto;
  padding: 1rem;
}

#hint {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #8a8a96;
  text-align: center;
}
#hint .mark {
  font-size: 2rem;
  opacity: 0.5;
}
#hint p { margin: 0.3rem 0; }
#hint .how {
  font-size: 0.85rem;
  max-width: 30rem;
}
#hint code {
  background: #ececf1;
  border-radius: 4px;
  padding: 0.05rem 0.3rem;
}

#error {
  margin: 0;
  padding: 0.6rem 1rem;
  background: #2a1215;
  color: #ff9b90;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 8rem;
  overflow: auto;
}

#status {
  padding: 0.35rem 1rem;
  font-size: 0.72rem;
  color: #8a8a96;
  border-top: 1px solid #e4e4ea;
  background: #f6f6f8;
}