:root {
  color-scheme: dark;
  --bg: #100e0c;
  --bar: #1a1612;
  --ink: #f3ead7;
  --muted: #b5a790;
  --line: #3a3126;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: "Iowan Old Style", Palatino, "Palatino Linotype", "Songti SC", "Noto Serif SC", serif;
}

body {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 12px 18px;
  background: var(--bar);
  border-bottom: 1px solid var(--line);
}

.mark {
  margin: 0;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 12px;
  color: var(--muted);
}

h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

#status {
  margin: 0 0 0 auto;
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 14px;
  color: var(--muted);
}

main {
  min-height: 0;
  background: #000;
}

#stage {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
  background: #000;
}

.hint {
  margin: 0;
  padding: 10px 18px 14px;
  background: var(--bar);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 720px) {
  header { flex-wrap: wrap; gap: 6px 12px; }
  #status { margin-left: 0; }
  h1 { font-size: 16px; }
}