:root {
  --bg: #0e1116;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --good: #3fb950;
  --bad: #f85149;
  --warn: #d29922;
  --panel: #161b22;
  --panel-2: #1c232c;
  --border: #30363d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 16px; line-height: 1.5;
}

main {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header h1 {
  font-size: 1.85rem;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}

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

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

.input {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.input label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}

input[type="text"] {
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.95rem;
  width: 100%;
  padding: 0.7rem 0.85rem;
  background: var(--panel-2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.examples {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
}

.examples button {
  font: inherit;
  font-size: 0.82rem;
  padding: 0.3rem 0.7rem;
  background: var(--panel-2);
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 16px;
  cursor: pointer;
}

.examples button:hover {
  border-color: var(--accent);
}

.results {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.result {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.5rem 1.25rem;
}

.result.invalid {
  border-color: rgba(248, 81, 73, 0.35);
}

.result-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.result-format {
  font-weight: 600;
  font-size: 1.05rem;
}

.badge {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.15rem 0.55rem;
  border-radius: 12px;
  letter-spacing: 0.02em;
}

.badge.ok    { background: rgba(63, 185, 80, 0.18); color: var(--good); }
.badge.bad   { background: rgba(248, 81, 73, 0.18); color: var(--bad);  }
.badge.note  { background: rgba(210, 153, 34, 0.18); color: var(--warn); }

table.kv {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

table.kv td {
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(48, 54, 61, 0.5);
  vertical-align: top;
}

table.kv tr:last-child td {
  border-bottom: none;
}

table.kv td:first-child {
  width: 30%;
  color: var(--muted);
  font-size: 0.85rem;
  padding-right: 1rem;
}

table.kv td:last-child {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  word-break: break-all;
}

.empty-hint {
  color: var(--muted);
  text-align: center;
  padding: 1.5rem;
  font-size: 0.92rem;
}

.empty-hint.no-match {
  color: var(--bad);
}

footer {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

footer code {
  background: var(--panel);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
}

@media (max-width: 600px) {
  table.kv td:first-child { width: 40%; }
}