/* Served under a CSP with style-src 'self' — no inline styles anywhere. */

:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --ink: #17191d;
  --ink-soft: #565c66;
  --ink-faint: #878d98;
  --rule: #e6e3dd;
  --accent: #1c6b5a;
  --accent-soft: #e8f1ee;
  --warn-bg: #fdf6e8;
  --warn-rule: #e8d5a8;
  --measure: 39rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101215;
    --surface: #171a1e;
    --ink: #e9eaec;
    --ink-soft: #a5abb5;
    --ink-faint: #767d88;
    --rule: #272b31;
    --accent: #6cc0aa;
    --accent-soft: #16241f;
    --warn-bg: #221d12;
    --warn-rule: #453a22;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 ui-sans-serif, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

.wrap--wide { max-width: 46rem; }

/* ---- masthead ---- */

.masthead { margin-bottom: 3.5rem; }

.mark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
  margin-bottom: 2.5rem;
}

.mark__glyph {
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 0.55rem;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.95rem;
  font-weight: 700;
  flex: none;
}

@media (prefers-color-scheme: dark) {
  .mark__glyph { color: #0e1512; }
}

.mark__text { font-weight: 600; letter-spacing: -0.01em; }

h1 {
  font-size: clamp(2rem, 6vw, 2.9rem);
  line-height: 1.12;
  letter-spacing: -0.028em;
  font-weight: 660;
  margin: 0 0 1rem;
  text-wrap: balance;
}

.lede {
  font-size: 1.19rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  text-wrap: pretty;
}

/* ---- prose ---- */

h2 {
  font-size: 1.06rem;
  font-weight: 640;
  letter-spacing: 0.005em;
  margin: 3rem 0 0.85rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
}

h3 {
  font-size: 0.97rem;
  font-weight: 640;
  margin: 1.9rem 0 0.5rem;
  color: var(--ink);
}

p { margin: 0 0 1.05rem; text-wrap: pretty; }

ul { margin: 0 0 1.05rem; padding-inline-start: 1.15rem; }
li { margin-bottom: 0.45rem; }
li::marker { color: var(--ink-faint); }

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }

strong { font-weight: 620; }

.meta {
  font-size: 0.87rem;
  color: var(--ink-faint);
  margin-bottom: 2.5rem;
}

/* ---- components ---- */

.callout {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-inline-start: 3px solid var(--accent);
  border-radius: 0.2rem 0.6rem 0.6rem 0.2rem;
  padding: 1.1rem 1.3rem;
  margin: 0 0 1.6rem;
}

.callout > :last-child { margin-bottom: 0; }

.callout--note {
  background: var(--warn-bg);
  border-color: var(--warn-rule);
  border-inline-start-color: #c99a3a;
}

.variants {
  display: grid;
  gap: 0.9rem;
  margin: 0 0 1.6rem;
}

@media (min-width: 34rem) {
  .variants { grid-template-columns: 1fr 1fr; }
}

.variant {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 0.7rem;
  padding: 1.1rem 1.2rem;
}

.variant h3 { margin-top: 0; }

.variant p {
  font-size: 0.93rem;
  color: var(--ink-soft);
  margin-bottom: 0;
}

.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 620;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.2rem 0.5rem;
  border-radius: 0.3rem;
  margin-bottom: 0.6rem;
}

.facts {
  list-style: none;
  padding: 0;
  margin: 0 0 1.6rem;
  border-top: 1px solid var(--rule);
}

.facts li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--rule);
  margin: 0;
  font-size: 0.95rem;
}

.facts dt, .facts .k { color: var(--ink-soft); }
.facts .v { font-weight: 560; text-align: end; }

footer {
  margin-top: 4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
  font-size: 0.88rem;
  color: var(--ink-faint);
}

footer a { color: var(--ink-soft); }

.footlinks {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-bottom: 0.9rem;
}

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

[dir="rtl"] body {
  font-family: ui-sans-serif, -apple-system, "SF Arabic", "Geeza Pro",
    "Noto Naskh Arabic", "Segoe UI", Tahoma, sans-serif;
}

[dir="rtl"] h1,
[dir="rtl"] .lede { letter-spacing: 0; }