*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f5f5;
  color: #1a1a1a;
  min-height: 100vh;
  -webkit-text-size-adjust: 100%;
}

header {
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 500;
  position: sticky;
  top: 0;
  z-index: 10;
}

header a { color: #555; text-decoration: none; }
header a:hover { color: #000; }

main {
  max-width: 800px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

h1 { font-size: 1.4rem; font-weight: 500; margin-bottom: 1.5rem; }

.kaarten {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.kaart {
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
  min-height: 100px;
}

.kaart:hover { border-color: #aaa; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.kaart:active { background: #f8f8f8; }
.kaart .icoon { font-size: 1.8rem; }
.kaart strong { font-size: 0.95rem; }
.kaart small { color: #777; font-size: 0.82rem; }

/* Mobiel */
@media (max-width: 480px) {
  header { padding: 0 1rem; font-size: 0.9rem; }
  main { margin: 1rem auto; padding: 0 0.75rem; }
  h1 { font-size: 1.2rem; margin-bottom: 1rem; }
  .kaarten { grid-template-columns: 1fr 1fr; gap: 0.6rem; }
  .kaart { padding: 1rem; min-height: 90px; }
  .kaart .icoon { font-size: 1.5rem; }
  .kaart strong { font-size: 0.88rem; }
  .kaart small { font-size: 0.78rem; }
}