:root {
  --bg: #f4f6f5;
  --card: #ffffff;
  --text: #17201e;
  --muted: #5b6763;
  --border: #d9e0dd;
  --accent: #0f766e;
  --accent-text: #ffffff;
  --warn-bg: #fff4e5;
  --warn-border: #f0b35b;
  --attn-bg: #e6f4f1;
  --error: #b42318;
  --ok: #067647;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101514;
    --card: #182120;
    --text: #e7eeec;
    --muted: #9fb0ab;
    --border: #2c3a37;
    --accent: #2bb3a3;
    --accent-text: #06201d;
    --warn-bg: #3a2a12;
    --warn-border: #a36d1f;
    --attn-bg: #123430;
    --error: #ff8a80;
    --ok: #6ee7b7;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header, main, footer {
  max-width: 40rem;
  margin: 0 auto;
  padding: 0 16px;
}

header { padding-top: 24px; }
h1 { margin: 0; font-size: 1.6rem; }
h2 { margin: 0 0 8px; font-size: 1.15rem; display: flex; align-items: center; gap: 10px; }
.sub { margin: 4px 0 16px; color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}
.card.warn { background: var(--warn-bg); border-color: var(--warn-border); }
.card.attention { background: var(--attn-bg); border-color: var(--accent); margin: 12px 0 0; }
.card.attention p { margin: 4px 0 0; }
section[aria-disabled="true"] { opacity: 0.6; }

.num {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 0.95rem;
  flex: none;
}

.hints { margin: 0 0 12px; padding-left: 20px; color: var(--muted); }
.row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }

button {
  font: inherit;
  min-height: 44px;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.small-btn { min-height: 36px; padding: 4px 12px; font-size: 0.9rem; }

label { display: block; margin: 12px 0 4px; }
input {
  font: inherit;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  width: 100%;
}
.inline { display: inline-flex; align-items: center; gap: 6px; }
.inline input { width: 5rem; }

.status { min-height: 1.5em; margin: 8px 0 0; }
.status.error { color: var(--error); }
.status.ok { color: var(--ok); }
.small { font-size: 0.875rem; color: var(--muted); }

.result {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 12px;
  margin: 12px 0 0;
  font-size: 0.95rem;
}
.result dt { color: var(--muted); }
.result dd { margin: 0; overflow-wrap: anywhere; }

details.advanced { margin-top: 12px; }
summary { cursor: pointer; font-weight: 600; }

pre#log {
  max-height: 20rem;
  overflow: auto;
  font-size: 0.75rem;
  background: var(--bg);
  padding: 8px;
  border-radius: 8px;
  white-space: pre-wrap;
  word-break: break-all;
}

footer { padding-bottom: 32px; font-size: 0.85rem; color: var(--muted); }
footer a { color: var(--accent); }
#status-note { margin: 0 0 16px; }