:root { --rand: #d8d3cc; --accent: #7a5c47; --fout: #a33; --zacht: #f7f4f0; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.55 system-ui, sans-serif; color: #24201d; background: #fff; }
header { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center;
  justify-content: space-between; padding: 1rem; border-bottom: 1px solid var(--rand); }
.merk { font-weight: 700; text-decoration: none; color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
nav a { color: inherit; }
.inline { display: inline; }
main { max-width: 46rem; margin: 0 auto; padding: 1rem; }
.lessen { list-style: none; padding: 0; }
.lessen li { border: 1px solid var(--rand); border-radius: .5rem; padding: 1rem; margin-bottom: 1rem; }
.lessen h2 { margin: 0 0 .25rem; font-size: 1.15rem; }
.wanneer { margin: 0 0 .5rem; color: #5b524b; }
.melding { background: var(--zacht); border-left: 3px solid var(--accent); padding: .75rem; }
.fout, .waarschuwing { color: var(--fout); }
label { display: block; margin-bottom: .75rem; }
input, select { display: block; width: 100%; padding: .5rem; margin-top: .25rem;
  border: 1px solid var(--rand); border-radius: .25rem; font: inherit; }
button, .knop { display: inline-block; padding: .55rem 1rem; border: 0; border-radius: .25rem;
  background: var(--accent); color: #fff; font: inherit; text-decoration: none; cursor: pointer; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .5rem; border-bottom: 1px solid var(--rand); }
td.bedrag, th.bedrag { text-align: right; font-variant-numeric: tabular-nums; }