:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #17202a;
  --muted: #4b5563;
  --line: #c9ced6;
  --accent: #1d4ed8;
  --ok: #0b6b2f;
  --bad: #a11212;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Arabic", "Noto Sans Devanagari",
    "Noto Sans Bengali", "Noto Sans Tamil", "Noto Sans Telugu", "Noto Sans Thai", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}
:lang(ur) {
  font-family: "Noto Nastaliq Urdu", "Jameel Noor Nastaleeq", "Noto Naskh Arabic", "Geeza Pro", system-ui, sans-serif;
  line-height: 2;
}
:lang(ar) {
  font-family: "Noto Naskh Arabic", "Geeza Pro", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.top, main, footer { max-inline-size: 44rem; margin-inline: auto; padding-inline: 1rem; }
.top { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; justify-content: space-between; align-items: flex-end; padding-block: 1rem 0.5rem; }
h1 { margin: 0; font-size: 1.6rem; }
h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.tagline, .muted { color: var(--muted); margin: 0.25rem 0; }
.lang { display: grid; gap: 0.25rem; }
label { font-weight: 600; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 0.75rem; padding: 1rem; margin-block: 0.75rem; }
.pair { display: grid; gap: 0.75rem; }
@media (min-width: 40rem) {
  .pair { grid-template-columns: 1fr auto 1fr; align-items: start; }
  .swap { margin-block-start: 1.9rem; }
}
.field { display: grid; gap: 0.25rem; min-inline-size: 0; }
.control { display: flex; gap: 0.5rem; }
input[type="text"], select, textarea {
  font: inherit; color: inherit; background: #fff; border: 2px solid var(--line); border-radius: 0.5rem;
  min-block-size: 2.75rem; padding: 0.4rem 0.6rem; inline-size: 100%; min-inline-size: 0;
}
input[type="text"] { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; }
input[type="color"] { inline-size: 3.25rem; min-inline-size: 3.25rem; block-size: 2.75rem; padding: 0.2rem; border: 2px solid var(--line); border-radius: 0.5rem; background: #fff; }
input[aria-invalid="true"] { border-color: var(--bad); }
textarea { resize: vertical; font-family: ui-monospace, Menlo, Consolas, monospace; }
button {
  font: inherit; font-weight: 600; min-block-size: 2.75rem; min-inline-size: 2.75rem; padding: 0.4rem 1rem;
  border-radius: 0.5rem; border: 2px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer;
}
button.secondary, .swap { background: #fff; color: var(--accent); }
button:disabled { opacity: 0.55; cursor: not-allowed; }
:focus-visible { outline: 3px solid #f59e0b; outline-offset: 2px; }
.error { color: var(--bad); margin: 0; font-weight: 600; }
.preview { border: 1px solid var(--line); border-radius: 0.5rem; padding: 1rem; color: #374151; background: #fff; overflow-wrap: anywhere; }
.preview p { margin: 0.25rem 0; }
.sample-large { font-size: 1.5rem; font-weight: 700; }
.sample-normal { font-size: 1rem; }
.ratio { font-size: 1.2rem; margin: 0.75rem 0 0.25rem; }
.results, .recent { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.results li { display: flex; justify-content: space-between; gap: 0.75rem; align-items: center; border: 1px solid var(--line); border-radius: 0.5rem; padding: 0.5rem 0.75rem; }
.results li.ok .badge { color: var(--ok); }
.results li.bad .badge { color: var(--bad); }
.badge { white-space: nowrap; }
.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-block: 0.5rem; }
.status { min-block-size: 1.5rem; margin: 0; color: var(--muted); }
.recent-item { display: flex; gap: 0.75rem; align-items: center; inline-size: 100%; background: #fff; color: var(--ink); border-color: var(--line); justify-content: flex-start; }
.chip { display: inline-grid; place-items: center; min-inline-size: 2.5rem; block-size: 2rem; border: 1px solid var(--line); border-radius: 0.35rem; font-weight: 700; }
footer { padding-block: 1rem 2rem; }
a { color: var(--accent); }
.noscript { padding: 1rem; background: #fff3cd; }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; animation: none !important; } }