/* =========================================================
   basis.css — gedeeld door alle archetypes
   Reset, maatvoering, knoppen, toegankelijkheid. Geen kleur,
   geen lettertype: die komen uit stijl.css van het archetype
   en uit de :root-blok die bouw.py per klant meeschrijft.
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-tekst);
  font-size: 17px;
  line-height: 1.65;
  color: var(--renk-yazi);
  background: var(--renk-zemin);
  /* ruimte voor de vaste balk onderaan */
  padding-bottom: calc(var(--balk-hoogte, 74px) + env(safe-area-inset-bottom, 0px));
}

img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

/* --- maatvoering ----------------------------------------- */
:root {
  --r1: 4px;  --r2: 8px;   --r3: 14px;  --r4: 22px;
  --r5: 36px; --r6: 56px;  --r7: 88px;
  --breed: 1080px;
  --smal: 720px;
}

.ic       { width: 100%; max-width: var(--breed); margin: 0 auto; padding: 0 20px; }
.ic--smal { max-width: var(--smal); }

.bolum        { padding: var(--r6) 0; }
@media (min-width: 760px) { .bolum { padding: var(--r7) 0; } }
.bolum--kompakt { padding: var(--r5) 0; }

/* --- typografie ------------------------------------------ */
h1, h2, h3, h4, .kop {
  font-family: var(--font-kop);
  font-weight: var(--kop-gewicht, 700);
  line-height: 1.08;
  letter-spacing: var(--kop-spatie, 0);
  text-transform: var(--kop-kast, none);
}
h1 { font-size: clamp(2.1rem, 8.5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 6vw, 2.6rem); }
h3 { font-size: clamp(1.1rem, 4vw, 1.4rem); }

.altyazi {
  color: var(--renk-soluk);
  font-size: 1rem;
  margin-top: var(--r2);
  max-width: 46ch;
}

.bolum-kop { margin-bottom: var(--r5); }

/* --- knoppen --------------------------------------------- */
.knop {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  font-family: var(--font-kop);
  font-size: 1rem;
  font-weight: var(--kop-gewicht, 700);
  letter-spacing: var(--kop-spatie, 0);
  text-transform: var(--kop-kast, none);
  text-decoration: none;
  border-radius: var(--knop-radius, 0);
  -webkit-tap-highlight-color: transparent;
  transition: transform .08s ease, background-color .18s ease, color .18s ease;
}
.knop:active { transform: translateY(1px); }
.knop svg { width: 20px; height: 20px; flex: none; fill: currentColor; }

.knop--vol  { background: var(--renk-merk);  color: var(--renk-merk-yazi); }
.knop--merk { background: var(--renk-vurgu); color: var(--renk-vurgu-yazi); }
.knop--lijn { border: 2px solid currentColor; }
.knop--wa   { background: #25d366; color: #fff; }   /* vaste WhatsApp-kleur */

/* --- toegankelijkheid ------------------------------------ */
.sr {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}
.overslaan {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  padding: 12px 18px; background: var(--renk-merk); color: var(--renk-merk-yazi);
}
.overslaan:focus { left: 0; }

:focus-visible { outline: 3px solid var(--renk-vurgu); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}