:root {
  --bg: #ffffff;
  --surface: #f6f7f9;
  --border: #e3e6ea;
  --text: #14181d;
  --muted: #5c6773;
  --accent: #1f6feb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --border: #262c35;
    --text: #e8ecf1;
    --muted: #97a3b0;
    --accent: #5b9dff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 28px;
  margin-bottom: 40px;
}

.brand {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

.brand-ar {
  font-size: 17px;
  color: var(--muted);
  margin: 0;
}

h2 {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
  margin: 40px 0 12px;
}

h3 {
  font-size: 17px;
  margin: 28px 0 8px;
}

p { margin: 0 0 14px; }

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

ul { padding-left: 20px; margin: 0 0 14px; }
li { margin-bottom: 6px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
}

dl {
  margin: 0;
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 10px 16px;
}

dt {
  color: var(--muted);
  font-size: 14px;
}

dd { margin: 0; }

@media (max-width: 520px) {
  dl { grid-template-columns: 1fr; gap: 2px 0; }
  dd { margin-bottom: 12px; }
}

footer {
  border-top: 1px solid var(--border);
  margin-top: 56px;
  padding-top: 24px;
  color: var(--muted);
  font-size: 14px;
}

footer a { margin-inline-end: 16px; }

/* ---- language toggle ---- */

.lang-toggle {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  width: fit-content;
  margin-bottom: 28px;
}

.lang-toggle button {
  font: inherit;
  font-size: 14px;
  padding: 6px 16px;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
}

[data-lang-panel] { display: none; }
[data-lang-panel].active { display: block; }

/* ---- arabic / rtl ---- */

[dir="rtl"] {
  direction: rtl;
  text-align: right;
  font-family: "Segoe UI", Tahoma, "Noto Naskh Arabic", sans-serif;
  line-height: 1.9;
}

[dir="rtl"] ul { padding-left: 0; padding-right: 20px; }

[dir="rtl"] dl { text-align: right; }