:root {
  color-scheme: light dark;
  --ok: #1a7f37;
  --warn: #9a6700;
  --error: #cf222e;
  --border: #d0d7de;
  --bg-subtle: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --border: #30363d;
    --bg-subtle: #161b22;
  }
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
  line-height: 1.5;
}

textarea {
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  box-sizing: border-box;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
}

#results {
  margin-top: 1.5rem;
}

.placeholder {
  color: #6e7781;
  font-style: italic;
}

.cert-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.cert-card.error {
  border-color: var(--error);
}

.cert-card h3 {
  margin-top: 0;
}

.expiry-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.expiry-badge.ok { color: #fff; background: var(--ok); }
.expiry-badge.warn { color: #fff; background: var(--warn); }
.expiry-badge.error { color: #fff; background: var(--error); }

.san-section {
  background: var(--bg-subtle);
  border-radius: 6px;
  padding: 0.5rem 0.9rem;
  margin-bottom: 0.9rem;
}

.san-list {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
  columns: 2;
}

dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.3rem 1rem;
  margin: 0;
}

dt {
  font-weight: 600;
  white-space: nowrap;
}

dd {
  margin: 0;
  word-break: break-word;
}

details {
  margin-top: 1rem;
}

.raw-dump {
  background: var(--bg-subtle);
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.8rem;
}

#examples pre {
  background: var(--bg-subtle);
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
}

.domain-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#domainInput {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 220px;
}

.domain-row .hint {
  font-size: 0.8rem;
  color: #6e7781;
}

.example {
  position: relative;
}

.example pre {
  margin: 0 0 1rem;
  padding-right: 2.5rem;
}

.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-subtle);
  color: inherit;
  cursor: pointer;
}

.copy-btn:hover {
  background: var(--border);
}

.copy-btn.copied {
  border-color: var(--ok);
  color: var(--ok);
}

.copy-btn.copy-failed {
  border-color: var(--error);
  color: var(--error);
}