:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #22201c;
  --muted: #6d675d;
  --accent: #1f6f4a;
  --arabic: #1d3fbf;
  --key-ar: #b0263a;
  --key-lat: #3b2a7a;
  --border: #cfc9bd;
  --key-bg: #f3f1ec;
  --key-hover: #e7f2ec;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15171a; --surface: #1d2024; --text: #e8e6e1; --muted: #9a958b;
    --accent: #5cc493; --arabic: #8fb2ff; --key-ar: #ff8a96; --key-lat: #c2b5ff;
    --border: #3a3f46; --key-bg: #24282d; --key-hover: #233a30;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #15171a; --surface: #1d2024; --text: #e8e6e1; --muted: #9a958b;
  --accent: #5cc493; --arabic: #8fb2ff; --key-ar: #ff8a96; --key-lat: #c2b5ff;
  --border: #3a3f46; --key-bg: #24282d; --key-hover: #233a30;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans', system-ui, sans-serif;
  font-size: 16px;
}
header { text-align: center; padding: 20px 16px 4px; }
h1 {
  margin: 0;
  font-weight: 600;
  font-size: clamp(22px, 4vw, 32px);
  color: var(--accent);
  display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 16px;
}
h1 [lang="ar"] { font-family: 'Noto Naskh Arabic', serif; }
.sub { margin: 6px 0 0; color: var(--muted); }

main { max-width: 1100px; margin: 0 auto; padding: 12px 16px 40px; }

textarea {
  width: 100%;
  min-height: 200px;
  resize: vertical;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--arabic);
  font-family: 'Noto Naskh Arabic', serif;
  font-size: 28px;
  line-height: 1.7;
}
textarea:focus { outline: none; border-color: var(--accent); }
textarea.latin { border-style: dashed; }

.toolbar {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
  margin: 12px 0 0;
}
.toolbar button, .toolbar .button {
  font: inherit; font-size: 15px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--key-bg);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
}
.toolbar button:hover, .toolbar .button:hover { background: var(--key-hover); }
.toolbar [aria-pressed="true"]#mode { background: var(--accent); color: var(--bg); }
.toolbar .danger { color: #c0262d; font-weight: 600; }
#status { min-height: 1.4em; margin: 6px 0 0; text-align: center; color: var(--accent); }

#keyboard { margin-top: 8px; }
.row {
  display: flex; flex-wrap: wrap; justify-content: center;
  direction: rtl;
  gap: 6px;
  margin-bottom: 12px;
}
.key {
  display: flex; flex-direction: column; align-items: center;
  width: 52px;
  padding: 2px 0 6px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--key-bg);
  cursor: pointer;
  font: inherit;
  touch-action: manipulation;
}
.key:hover { background: var(--key-hover); }
.key:active { transform: translateY(1px); }
.key .lat {
  direction: ltr;
  font-size: 13px;
  color: var(--key-lat);
  min-height: 1.3em;
  white-space: nowrap;
}
.key .ar {
  font-family: 'Noto Naskh Arabic', serif;
  font-size: 28px;
  line-height: 1.3;
  color: var(--key-ar);
}

.help { margin-top: 16px; color: var(--muted); }
.help summary { cursor: pointer; color: var(--text); }
.help li { margin: 6px 0; line-height: 1.6; }
kbd {
  font-family: ui-monospace, monospace;
  font-size: 0.9em;
  padding: 1px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--key-bg);
  color: var(--text);
}

@media (max-width: 560px) {
  .key { width: 40px; }
  .key .ar { font-size: 22px; }
  .key .lat { font-size: 11px; }
  .row { gap: 4px; }
  textarea { min-height: 160px; }
}