:root {
  --bg: #f7f7f5;
  --card: #ffffff;
  --text: #1d1d1b;
  --muted: #5f5f5a;
  --line: #deded8;
  --accent: #2f5d50;
  --accent-text: #ffffff;
  --bad: #a3322a;
  --good: #2f6b3a;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161716;
    --card: #1f201f;
    --text: #ecece8;
    --muted: #a8a8a1;
    --line: #353633;
    --accent: #7fb8a5;
    --accent-text: #0f1513;
    --bad: #f08a80;
    --good: #8ccf98;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main {
  max-width: 34rem;
  margin: 0 auto;
  padding: 24px 16px 40px;
}
h1 { font-size: 1.25rem; margin: 0 0 4px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
header { margin-bottom: 20px; }
.lead { color: var(--muted); margin: 0; font-size: 0.9rem; }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px 16px;
  margin-bottom: 16px;
}
[hidden] { display: none !important; }
p { margin: 0 0 12px; }
.small { font-size: 0.875rem; color: var(--muted); }
dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 12px;
  margin: 0 0 16px;
}
dt { color: var(--muted); }
dd { margin: 0; overflow-wrap: anywhere; }
dd.code {
  font: 600 1.2rem/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.06em;
}
label { display: block; font-weight: 600; margin-bottom: 6px; }
textarea {
  width: 100%;
  font: 13px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  resize: vertical;
  word-break: break-all;
}
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
button {
  font: inherit;
  border-radius: 8px;
  padding: 10px 16px;
  min-height: 44px;
  cursor: pointer;
}
button.primary { background: var(--accent); color: var(--accent-text); border: 1px solid var(--accent); font-weight: 600; }
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); }
button.link { background: none; border: 0; padding: 0; min-height: 0; color: var(--accent); text-decoration: underline; }
button:disabled { opacity: 0.55; cursor: default; }
#status { min-height: 1.5em; }
#status.bad { color: var(--bad); }
#status.good { color: var(--good); }