:root {
  --bg: #f5f5f2;
  --paper: #ffffff;
  --ink: #16191c;
  --muted: #5f656c;
  --line: #dfe1e3;
  --accent: #0a66d8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1113;
    --paper: #1a1d20;
    --ink: #f2f3f4;
    --muted: #a6acb3;
    --line: #2c3035;
    --accent: #6fb0ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 40px 20px 72px; }
header { display: flex; align-items: center; gap: 10px; margin-bottom: 32px; }
header a { color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); display: inline-block; }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.5px; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 22px 0 4px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }
a { color: var(--accent); }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 16px 0; }
ul { padding-left: 20px; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { font-size: 13px; text-transform: uppercase; letter-spacing: 0.4px; color: var(--muted); }
.table-wrap { overflow-x: auto; }
footer { margin-top: 48px; font-size: 14px; color: var(--muted); }
nav a { margin-right: 16px; }
.lang { margin-left: auto; font-size: 14px; font-weight: 600; text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; color: var(--muted); }
.lang:hover { color: var(--ink); }

/* In de app (?app=1): geen kop en voettekst, de app toont zelf een titel en sluitknop. */
.app body { background: transparent; }
.app header, .app footer { display: none; }
.app main { padding: 12px 18px 48px; }
.app h1 { font-size: 28px; }