:root {
  --bg: #0f1115;
  --panel: #171a21;
  --fg: #e8e8e3;
  --muted: #8b93a1;
  --accent: #7ee787;
  --accent-2: #f2cc60;
  --border: #2a2f3a;
  --error: #ff7b72;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfbf8;
    --panel: #ffffff;
    --fg: #1b1f27;
    --muted: #5d6571;
    --accent: #1a7f37;
    --accent-2: #9a6700;
    --border: #e1e4e8;
    --error: #cf222e;
  }
}

* { box-sizing: border-box; }

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

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

header { text-align: center; margin-bottom: 24px; }

.ascii {
  font-family: var(--mono);
  font-size: clamp(4px, 1.1vw, 10px);
  line-height: 1.15;
  color: var(--accent);
  margin: 0 auto 8px;
  overflow: hidden;
  white-space: pre;
  /* header is centered; a pre would center each line separately and skew the art */
  text-align: left;
  width: max-content;
  max-width: 100%;
}

h1 {
  font-family: var(--mono);
  font-size: 2rem;
  margin: 0;
  letter-spacing: -0.02em;
}

.tagline { color: var(--muted); margin: 4px 0 0; font-style: italic; }

.input-row { margin: 24px 0; }

#n {
  width: 100%;
  font-family: var(--mono);
  font-size: clamp(1.4rem, 4vw, 2.4rem);
  padding: 14px 18px;
  background: var(--panel);
  color: var(--fg);
  border: 2px solid var(--border);
  border-radius: 12px;
  outline: none;
}
#n:focus { border-color: var(--accent); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chips button {
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 6px 12px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
}
.chips button:hover { color: var(--fg); border-color: var(--accent); }
.chips sup { font-size: 0.7em; }

.hero { min-height: 4rem; margin: 8px 0 32px; }
.english {
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 600;
  margin: 0;
  color: var(--accent);
  overflow-wrap: anywhere;
}
.error { color: var(--error); font-family: var(--mono); margin: 0; }

h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin: 0 0 12px;
}

.facts dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  margin: 0 0 32px;
}
.facts dt { color: var(--muted); font-family: var(--mono); font-size: 0.9rem; }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.facts dd.na { color: var(--muted); }
/* vinculum bars need room so adjacent overlines don't merge */
.facts dd.roman { font-family: var(--mono); letter-spacing: 0.12em; }
/* historical glyph blocks render small in most fonts */
.facts dd.glyphs { font-size: 1.35em; line-height: 1.2; letter-spacing: 0.05em; }
header a.home { color: inherit; text-decoration: none; display: inline-block; }
header a.home:hover .ascii { color: var(--accent-2); }

table { width: 100%; border-collapse: collapse; }
td { padding: 8px 8px; border-top: 1px solid var(--border); vertical-align: top; }
td.code { font-family: var(--mono); color: var(--accent-2); width: 3ch; }
td.name { color: var(--muted); width: 11ch; white-space: nowrap; }
td.words { overflow-wrap: anywhere; }
td.words[dir="rtl"] { text-align: left; }

footer { margin-top: 48px; color: var(--muted); font-size: 0.9rem; text-align: center; }
footer a { color: var(--fg); }
footer code { font-family: var(--mono); background: var(--panel); padding: 2px 6px; border-radius: 4px; }
.footnote { font-family: var(--mono); opacity: 0.5; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

@media (max-width: 520px) {
  .facts dl { grid-template-columns: 1fr; gap: 2px; }
  .facts dd { margin-bottom: 8px; }
  td.name { display: none; }
}