:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --border: #dcdcdc;
  --card: #f7f7f7;
  --accent: #0a5ee0;
  --accent-fg: #ffffff;
  --ok-border: #2f8f4e;
  --err-border: #c0392b;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8e8e8;
    --muted: #9a9a9a;
    --border: #33363c;
    --card: #1c1f24;
    --accent: #4c9aff;
    --accent-fg: #0a0a0a;
    --ok-border: #3fb96a;
    --err-border: #e0574a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.5;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

header h1 {
  font-family: var(--mono);
  font-size: 1.5rem;
  margin: 0 0 0.25rem;
}

.tagline {
  color: var(--muted);
  margin: 0 0 2rem;
}

.tagline code {
  font-family: var(--mono);
}

.input-label {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.input-label code {
  font-family: var(--mono);
}

textarea {
  width: 100%;
  min-height: 10rem;
  resize: vertical;
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.75rem;
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0.75rem 0 1.5rem;
  flex-wrap: wrap;
}

button {
  font: inherit;
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-fg);
  cursor: pointer;
}

button:hover { filter: brightness(1.08); }

.privacy-note {
  color: var(--muted);
  font-size: 0.8rem;
}

.result {
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: 6px;
  background: var(--card);
  padding: 1rem 1.25rem;
}

.result.ok { border-left-color: var(--ok-border); }
.result.err { border-left-color: var(--err-border); }

.result h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.result dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.35rem 1rem;
  margin: 0;
}

.result dt {
  color: var(--muted);
}

.result dd {
  margin: 0;
}

.result .key {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.75rem;
}

.result .report-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

footer {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

a { color: var(--accent); }