:root {
  --brand: #436D89;
  --brand-dark: #35576e;
  --ink: #1a1a1a;
  --muted: #6b7683;
  --line: #e3e8ec;
  --bg: #f4f6f8;
  --card: #ffffff;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans Arabic", "Noto Sans Arabic", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Tahoma, Arial, sans-serif;
  line-height: 1.85;
  letter-spacing: normal;
  font-size: 16px;
}

[dir="ltr"] body,
body[data-lang="en"] {
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Helvetica, Arial, sans-serif;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--brand);
  color: #fff;
  padding: 20px 0;
}

.bar {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #fff;
  text-decoration: none;
  direction: ltr;
  unicode-bidi: isolate;
}

.lang-toggle {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  border-radius: 8px;
  padding: 7px 16px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
}

.lang-toggle:hover { background: rgba(255, 255, 255, 0.28); }

/* ---------- Layout ---------- */
main {
  max-width: 820px;
  margin: 28px auto 64px;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 32px 30px;
  margin-bottom: 20px;
}

h1 {
  font-size: 26px;
  color: var(--brand);
  margin: 0 0 6px;
  line-height: 1.5;
}

h2 {
  font-size: 19px;
  color: var(--brand);
  margin: 34px 0 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  line-height: 1.6;
}

.card > h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 22px; }

h3 { font-size: 16px; margin: 22px 0 8px; color: var(--ink); }

p { margin: 0 0 14px; }

ul { margin: 0 0 14px; padding-inline-start: 22px; }
li { margin-bottom: 9px; }

.meta { color: var(--muted); font-size: 14px; margin: 0 0 4px; }

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

.ltr { direction: ltr; unicode-bidi: isolate; }

.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  padding: 13px 30px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  margin-top: 6px;
}

.btn:hover { background: var(--brand-dark); }

.tiles { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; margin-top: 22px; }

.tile {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  text-decoration: none;
  color: var(--ink);
}

.tile:hover { border-color: var(--brand); }
.tile strong { display: block; color: var(--brand); font-size: 17px; margin-bottom: 4px; }
.tile span { color: var(--muted); font-size: 14px; }

footer {
  max-width: 820px;
  margin: 0 auto;
  padding: 26px 20px 40px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

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

[hidden] { display: none !important; }

@media (max-width: 620px) {
  .card { padding: 24px 20px; }
  h1 { font-size: 22px; }
  .tiles { grid-template-columns: 1fr; }
}