*, *::before, *::after { box-sizing: border-box; }
html { font-size: 100%; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; font-size: 1.0625rem; line-height: 1.55; color: var(--tekst); background: var(--achtergrond); }
.binnen { max-width: 860px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; top: 0; background: #fff; color: var(--primair); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; top: 8px; outline: 3px solid var(--accent); }
.kop { background: var(--primair); color: #fff; }
.kop .binnen { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px 24px; min-height: 64px; padding-top: 10px; padding-bottom: 10px; }
.kop .logo { color: #fff; font-weight: bold; font-size: 1.15rem; text-decoration: none; }
.kop nav a { color: #fff; margin-left: 20px; text-decoration: none; border-bottom: 2px solid transparent; }
.kop nav a:hover, .kop nav a:focus { border-bottom-color: #fff; }
main { padding: 28px 20px 48px; }
h1 { color: var(--primair); font-size: 1.9rem; line-height: 1.2; margin: 0 0 8px; }
h2 { color: var(--primair); font-size: 1.25rem; margin: 32px 0 10px; }
.intro { font-size: 1.1rem; margin: 0 0 24px; }
.vlak { background: var(--vlak); border-radius: 6px; padding: 18px 20px; margin: 0 0 20px; }
.vlak h2 { margin-top: 0; font-size: 1.1rem; }
.rij label { display: block; margin-bottom: 8px; }
.rij-velden { display: flex; gap: 10px; flex-wrap: wrap; }
.rij-velden input { flex: 1 1 220px; }
.klein { font-size: 0.92rem; color: #444; }
.hulp { font-size: 0.92rem; color: #444; margin: 4px 0 0; }
.melding { padding: 14px 16px; border-radius: 6px; margin: 16px 0; border-left: 6px solid; }
.melding-ok { background: #EEF7EE; border-color: #2E7D32; }
.melding-fout { background: #FDECEC; border-color: #B00020; }
.melding-let { background: #FFF6E5; border-color: #C77700; }
fieldset.dag { border: 0; padding: 0; margin: 0 0 22px; }
fieldset.dag legend { font-weight: bold; color: var(--primair); font-size: 1.05rem; margin-bottom: 8px; padding: 0; }
.sessie { display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: start; padding: 12px 14px; border: 1px solid #D7DEE6; border-radius: 6px; margin-bottom: 8px; background: #fff; }
.sessie:has(input:checked) { border-color: var(--accent); background: #F2F8FC; }
.sessie input[type=checkbox] { width: 22px; height: 22px; margin: 4px 0 0; accent-color: var(--accent); }
.sessie label { display: block; cursor: pointer; }
.sessie-titel { display: block; font-weight: bold; }
.sessie-meta { display: block; color: #444; font-size: 0.95rem; }
.sessie-plekken { display: block; font-size: 0.9rem; color: #2E7D32; margin-top: 2px; }
.sessie-vol .sessie-plekken { color: #B00020; }
.veld { margin: 0 0 16px; max-width: 520px; }
.veld label { display: block; font-weight: bold; margin-bottom: 4px; }
input[type=text], input[type=email] { width: 100%; font: inherit; padding: 10px 12px; border: 1px solid #8A949E; border-radius: 4px; background: #fff; color: var(--tekst); }
input:focus, button:focus, a:focus { outline: 3px solid var(--accent); outline-offset: 2px; }
.veld-check { display: grid; grid-template-columns: 26px 1fr; gap: 10px; align-items: start; max-width: 720px; }
.veld-check input { width: 22px; height: 22px; margin-top: 3px; accent-color: var(--accent); }
.veld-check label { font-weight: normal; }
.knop { display: inline-block; font: inherit; font-weight: bold; padding: 12px 22px; border-radius: 4px; border: 2px solid var(--primair); background: var(--primair); color: #fff; cursor: pointer; text-decoration: none; }
.knop:hover { background: var(--accent); border-color: var(--accent); }
.knop-licht { background: #fff; color: var(--primair); }
.knop-licht:hover { background: var(--vlak); color: var(--primair); }
button.link { font: inherit; background: none; border: 0; color: var(--accent); text-decoration: underline; cursor: pointer; padding: 0; }
form.inline { display: inline; }
.lijst { padding-left: 20px; }
.lijst li { margin-bottom: 10px; }
a { color: var(--accent); }
.voet { background: var(--vlak); color: #333; font-size: 0.92rem; margin-top: 24px; padding: 18px 0; }
.voet p { margin: 4px 0; }
@media (max-width: 600px) { h1 { font-size: 1.5rem; } .kop nav a { margin-left: 12px; } main { padding: 20px 16px 40px; } }