:root {
  color-scheme: light dark;
  --bg: #fafaf7;
  --fg: #1d1d1b;
  --muted: #5d5d58;
  --line: #d9d9d2;
  --code: #f0f0ea;
  --accent: #1f5fbf;
  --bad: #b3261e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --fg: #ecece6;
    --muted: #a3a39c;
    --line: #34342f;
    --code: #20201e;
    --accent: #7fb0ff;
    --bad: #ff8a80;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, sans-serif;
}
main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}
h1 {
  font-size: 1.5rem;
  margin: 0 0 1rem;
}
h2 {
  font-size: 1rem;
  margin: 1.5rem 0 0.5rem;
}
dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1rem;
  margin: 0;
}
dt {
  color: var(--muted);
}
dd {
  margin: 0;
  overflow-wrap: anywhere;
}
ul {
  margin: 0;
  padding-left: 1.2rem;
}
pre {
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem;
  overflow: auto;
  max-height: 60vh;
  font-size: 0.875rem;
}
code {
  font-size: 0.875rem;
}
.hint {
  color: var(--muted);
  font-size: 0.875rem;
}
.problem {
  color: var(--bad);
}
button {
  font: inherit;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  border: 0;
  background: var(--accent);
  color: var(--bg);
  cursor: pointer;
}
button:disabled {
  opacity: 0.5;
  cursor: default;
}
button.quiet {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--line);
}
[hidden] {
  display: none !important;
}
.row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.field {
  display: grid;
  gap: 0.25rem;
  margin: 0 0 1rem;
}
input {
  font: inherit;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  max-width: 24rem;
}
.secret {
  font: 600 1.75rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin: 1rem 0 0.5rem;
  overflow-wrap: anywhere;
}
#mine li {
  margin: 0.25rem 0;
}
/* copy.html, in its frame on the admin page: no page of its own around it. */
body.framed main {
  padding: 4px 2px 8px;
}
body.framed .secret {
  font-size: 1.4rem;
}