:root {
  --bg: #f6f1e7;
  --ink: #18302a;
  --muted: #4f625b;
  --link: #176a55;
  --panel: #fffdf8;
  --line: #d9cfbd;
  --focus: #a95128;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14201c;
    --ink: #e8efe9;
    --muted: #a9b8b1;
    --link: #7fd1b6;
    --panel: #1c2b26;
    --line: #34463f;
    --focus: #e39a6f;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 2rem 1rem 3rem;
  background: var(--bg);
  color: var(--ink);
  font: 1rem/1.6 system-ui, sans-serif;
}

main { max-width: 42rem; margin: 0 auto; }

h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 0.5rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 0.5rem; }
p, li { color: var(--ink); }
.muted { color: var(--muted); font-size: 0.9rem; }

a { color: var(--link); font-weight: 600; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

nav { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
nav a { margin-right: 1.25rem; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  margin: 1.25rem 0;
}

code#code, code#error {
  display: block;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  font: 0.95rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  margin: 0.5rem 0 1rem;
}

button {
  font: inherit;
  font-weight: 600;
  min-height: 44px;
  padding: 0 1.25rem;
  border: 0;
  border-radius: 6px;
  background: var(--link);
  color: var(--bg);
  cursor: pointer;
}

[hidden] { display: none !important; }