:root {
  --bg: #0e1116;
  --surface: #161b22;
  --surface-2: #1f2630;
  --border: #2a323d;
  --text: #e6edf3;
  --text-dim: #9aa6b2;
  --accent: #58a6ff;
  --ok: #57c98a;
  --warn: #d29922;
  --bad: #f85149;
  --ruby: #2dd4bf;
  --code: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Hiragino Sans",
    "Yu Gothic UI", system-ui, sans-serif;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

header {
  margin-bottom: 24px;
}

h1 {
  font-size: 28px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code {
  font-family: var(--code);
  font-size: 12.5px;
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

.lede {
  margin: 0;
  color: var(--text-dim);
  max-width: 720px;
}

.lede strong {
  color: var(--text);
}

section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px 18px;
  margin-bottom: 14px;
}

/* ────────── toolbar ────────── */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
}

.samples {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.samples-label {
  font-size: 12px;
  color: var(--text-dim);
  margin-right: 4px;
}

.samples button {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 10px;
  border-radius: 5px;
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}

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

.toggles {
  display: flex;
  gap: 10px;
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}

.switch input[type="checkbox"] {
  accent-color: var(--accent);
}

/* ────────── input ────────── */

textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 6px;
  font-family: var(--code);
  font-size: 14px;
  line-height: 1.7;
  resize: vertical;
  outline: none;
  transition: border-color 0.12s, box-shadow 0.12s;
}

textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

/* ────────── output ────────── */

.output-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  gap: 12px;
}

.output-head h2 {
  margin: 0;
}

.status {
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--code);
}

.status.loading {
  color: var(--warn);
}

.status.ready {
  color: var(--ok);
}

.status.error {
  color: var(--bad);
}

.output {
  display: block;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 18px;
  min-height: 120px;
  font-size: 17px;
  line-height: 2.6; /* tall enough for rt to sit above */
  white-space: pre-wrap;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.output.empty {
  color: var(--text-dim);
  font-style: italic;
}

ruby {
  ruby-position: over;
}

ruby rt {
  font-size: 0.55em;
  color: var(--ruby);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* When the user toggles ruby off, hide rt entirely. */
.output.no-ruby ruby rt {
  display: none;
}

/* ────────── stats ────────── */

.stats {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--code);
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.stats span strong {
  color: var(--text);
  font-weight: 600;
}

/* ────────── footer ────────── */

footer {
  margin-top: 28px;
  font-size: 12.5px;
  color: var(--text-dim);
}

footer p {
  margin: 4px 0;
}