:root {
  --bg: #f7f9fb;
  --surface: #ffffff;
  --text: #17202a;
  --muted: #55606e;
  --border: #dde3ea;
  --brand: #0a6e5a;
  --brand-ink: #ffffff;
  --danger: #b42318;
  --danger-bg: #fef3f2;
  --note-bg: #eef6f4;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --surface: #161d24;
    --text: #e6ebf0;
    --muted: #a3adb8;
    --border: #2a3440;
    --brand: #4cc3a5;
    --brand-ink: #0f1419;
    --danger: #f97066;
    --danger-bg: #2a1614;
    --note-bg: #13241f;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Arabic", sans-serif;
}

a { color: var(--brand); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }

.site-header, .site-footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 16px;
}

.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 20px; text-decoration: none; color: var(--text); }
.brand span { color: var(--brand); }
.site-header nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: 15px; }

main {
  max-width: 760px;
  margin: 0 auto 32px;
  padding: 28px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

@media (max-width: 600px) {
  main { border-radius: 0; border-left: 0; border-right: 0; padding: 20px 16px; }
}

h1 { font-size: 1.75rem; line-height: 1.25; margin: 0 0 4px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; padding-top: 8px; border-top: 1px solid var(--border); }
h3 { font-size: 1.05rem; margin: 20px 0 6px; }
p, ul, ol { margin: 0 0 12px; }
ul, ol { padding-left: 1.3em; }
li { margin-bottom: 4px; }
.updated { color: var(--muted); font-size: 0.95rem; margin-bottom: 20px; }
.muted { color: var(--muted); }

.note {
  background: var(--note-bg);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 16px 0;
}

.warning {
  background: var(--danger-bg);
  border-left: 4px solid var(--danger);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 16px 0;
}

table { width: 100%; border-collapse: collapse; margin: 8px 0 16px; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }

form { margin: 12px 0; }
label { display: block; font-weight: 600; margin: 12px 0 6px; }
label.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
label.check input { margin-top: 5px; flex: none; }
input[type="email"], input[type="text"] {
  width: 100%;
  max-width: 420px;
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
}

button {
  font: inherit;
  font-weight: 600;
  margin-top: 14px;
  padding: 11px 22px;
  border: 0;
  border-radius: 8px;
  background: var(--brand);
  color: var(--brand-ink);
  cursor: pointer;
}
button.danger { background: var(--danger); color: #fff; }
button[disabled] { opacity: 0.5; cursor: not-allowed; }

.status { margin-top: 14px; font-weight: 600; }
[hidden] { display: none !important; }

.site-footer { color: var(--muted); font-size: 0.9rem; }
.site-footer a { margin-right: 14px; }