:root {
  --bg: #fafaf9;
  --fg: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --card: #ffffff;
  --accent: #0f766e;
  --accent-fg: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14110f;
    --fg: #f5f5f4;
    --muted: #a8a29e;
    --line: #292524;
    --card: #1c1917;
    --accent: #2dd4bf;
    --accent-fg: #042f2e;
  }
}

* { box-sizing: border-box; }

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

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

/* Language switching: English is the default; lang.js updates <html lang> */
html[lang="en"] [data-l="id"],
html[lang="id"] [data-l="en"] { display: none !important; }

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

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand { font-weight: 700; color: var(--fg); text-decoration: none; margin-right: auto; }

header.site nav { display: flex; flex-wrap: wrap; gap: 4px 18px; }
header.site nav a { color: var(--fg); text-decoration: none; font-size: 15px; }
header.site nav a:hover, header.site nav a[aria-current="page"] { color: var(--accent); text-decoration: underline; }

#lang-toggle {
  font: inherit;
  font-size: 14px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
}
#lang-toggle:hover { border-color: var(--accent); }

main { padding: 36px 0 56px; }

h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 1.25rem; margin: 2.2rem 0 0.4rem; }
p, li { color: var(--fg); }
ul, ol { padding-left: 1.3rem; }
li { margin: 0.25rem 0; }

.lead { font-size: 1.1rem; color: var(--muted); margin: 0 0 1.5rem; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 1.5rem; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 1.2rem 0;
}

footer.site {
  border-top: 1px solid var(--line);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 14px;
}
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer.site a { color: var(--fg); }
footer.site .copy { margin-right: auto; }