/* 1. Design tokens
   ---------------------------------------------------------- */
:root {
  --ink: #102522;
  --muted: #60716d;
  --green: #0d5c4d;
  --green2: #137864;
  --lime: #dff56a;
  --paper: #f6f8f3;
  --white: #fff;
  --line: #dce4df;
  --shadow: 0 18px 50px rgba(16, 37, 34, 0.10);
  --radius: 24px;
}

/* 2. Basis
   ---------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
a { color: inherit; }
button, input { font: inherit; }
.wrap { width: min(1160px, calc(100% - 40px)); margin: auto; }
section { padding: 90px 0; }

/* 3. Typografie
   ---------------------------------------------------------- */
h1 {
  max-width: 980px;
  margin: 26px 0 28px;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.065em;
}
h2 {
  max-width: 850px;
  margin: 14px 0 18px;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.03;
  letter-spacing: -0.055em;
}
.section-kicker {
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.section-intro {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

/* 4. Header & navigatie
   ---------------------------------------------------------- */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(246, 248, 243, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 228, 223, 0.8);
}
nav {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: inherit;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}
.mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--lime);
  background: var(--green);
  border-radius: 50%;
  font-weight: 900;
}
.links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 650;
}
.links a { text-decoration: none; }

/* 5. Buttons
   ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  border: 0;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary { color: #fff; background: var(--ink); }
.btn-primary:hover { background: var(--green); }
.btn-lime { color: var(--ink); background: var(--lime); }

/* 6. Hero
   ---------------------------------------------------------- */
.hero { padding: 90px 0 70px; }
.dot { width: 7px; height: 7px; background: var(--green2); border-radius: 50%; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: end;
  gap: 70px;
}
.lead { max-width: 680px; color: var(--muted); font-size: 20px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.mini { margin-top: 15px; color: var(--muted); font-size: 13px; }
.statement {
  padding: 34px;
  color: white;
  background: var(--green);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.statement strong {
  display: block;
  margin-bottom: 18px;
  color: var(--lime);
  font-size: 54px;
  line-height: 1;
  letter-spacing: -0.05em;
}
.statement p { margin: 0; font-size: 18px; }

/* 7. Stappen / kaarten
   ---------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 42px;
}
.card {
  min-height: 250px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.card-light { color: var(--ink); }
.num {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 42px;
  background: var(--lime);
  border-radius: 50%;
  font-weight: 900;
}
.card h3 { margin: 0 0 10px; font-size: 23px; letter-spacing: -0.035em; }
.card p { margin: 0; color: var(--muted); }

/* 8. Donkere sectie
   ---------------------------------------------------------- */
.dark { color: white; background: var(--ink); }
.dark .section-kicker { color: var(--lime); }
.dark .section-intro { color: #afbfba; }

/* 9. Principes
   ---------------------------------------------------------- */
.principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 40px;
}
.principles-light { color: var(--ink); }
.principle { padding: 26px 0; border-top: 1px solid #35504b; }
.principle h3 { margin: 0 0 8px; font-size: 21px; }
.principle p { margin: 0; color: #afbfba; }
.principle-light { border-color: var(--line); }
.principle-light p { color: var(--muted); }

/* 10. Registratieformulier
   ---------------------------------------------------------- */
.register {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: start;
  gap: 70px;
}
.formbox {
  padding: 30px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}
label { display: block; margin: 0 0 8px; font-size: 13px; font-weight: 800; }
input {
  width: 100%;
  margin-bottom: 17px;
  padding: 15px 16px;
  background: #fbfcfa;
  border: 1px solid #cbd7d1;
  border-radius: 13px;
  outline: none;
}
input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(13, 92, 77, 0.10); }
.formbox .btn { width: 100%; padding: 16px; }
.fine { margin: 14px 2px 0; color: var(--muted); font-size: 12px; }
.success {
  display: none;
  margin-top: 14px;
  padding: 14px;
  background: #edf8d2;
  border-radius: 12px;
  font-weight: 700;
}

/* 11. FAQ
   ---------------------------------------------------------- */
.faq { max-width: 850px; }
.faq details { padding: 21px 0; border-top: 1px solid var(--line); }
.faq summary { font-size: 18px; font-weight: 850; cursor: pointer; }
.faq p { max-width: 720px; color: var(--muted); }

/* 12. Footer
   ---------------------------------------------------------- */
footer {
  padding: 44px 0;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 25px; }

/* 13. Responsive
   ---------------------------------------------------------- */
@media (max-width: 800px) {
  .links a:not(.btn) { display: none; }
  .hero { padding-top: 60px; }
  .hero-grid,
  .register { grid-template-columns: 1fr; gap: 36px; }
  .steps,
  .principles { grid-template-columns: 1fr; }
  .statement strong { font-size: 44px; }
  section { padding: 70px 0; }
}