/* ============================================================
   SMART-onderzoek — gedeeld stylesheet
   Kleuren aanpassen? Wijzig gewoon de waarden hieronder bij :root.
   ============================================================ */
:root {
  --ink: #1B2233;
  --ink-soft: #4A5268;
  --paper: #F4F5F8;
  --surface: #FFFFFF;

  /* Merkkleuren — pas hier aan als je andere tinten wil */
  --blue: #00ADEF;
  --blue-deep: #0072A8;
  --blue-pale: #E4F6FF;
  --orange: #F68712;
  --orange-deep: #C96A08;
  --orange-pale: #FFF0DE;

  --line: #DADFE8;
  --focus: #00ADEF;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: 'Source Serif 4', serif; font-weight: 500; color: var(--ink); margin: 0; }
p { margin: 0 0 1em; color: var(--ink-soft); }
a { color: var(--blue-deep); }
a:focus-visible, button:focus-visible, .tab:focus-visible, summary:focus-visible {
  outline: 2px solid var(--focus); outline-offset: 3px;
}
img { max-width: 100%; display: block; border-radius: 12px; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 28px; }
.narrow { max-width: 700px; }

/* ---------- header ---------- */
header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 0.5px solid var(--line);
}
.headerbar { display: flex; align-items: center; justify-content: space-between; padding: 16px 28px; max-width: 1040px; margin: 0 auto; }
.wordmark { display: flex; align-items: baseline; gap: 8px; font-family: 'Source Serif 4', serif; font-size: 19px; text-decoration: none; }
.wordmark b { color: var(--blue-deep); font-weight: 600; }
.wordmark span { color: var(--ink-soft); font-size: 13px; font-family: 'IBM Plex Sans', sans-serif; }
nav { display: flex; gap: 22px; align-items: center; }
nav a { color: var(--ink-soft); text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--blue-deep); }
nav a.current { color: var(--blue-deep); font-weight: 500; }
nav a.pill { background: var(--orange); color: #fff; padding: 8px 16px; border-radius: 7px; }
nav a.pill:hover { background: var(--orange-deep); color: #fff; }
nav a.pill-blue { background: var(--blue); color: #fff; padding: 8px 16px; border-radius: 7px; }
nav a.pill-blue:hover { background: var(--blue-deep); color: #fff; }
@media (max-width: 760px) { nav .hide-mobile { display: none; } }

/* ---------- hero ---------- */
.hero { padding: 64px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
@media (max-width: 800px) { .hero-grid { grid-template-columns: 1fr; } }
.eyebrow-line { font-size: 14px; color: var(--orange-deep); font-weight: 500; margin-bottom: 14px; }
.hero h1 { font-size: clamp(30px, 4vw, 42px); line-height: 1.18; letter-spacing: -0.01em; }
.hero p.lead { font-size: 17px; margin-top: 18px; max-width: 46ch; }
.cta-row { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 8px; font-size: 15px;
  text-decoration: none; border: 0.5px solid var(--line); cursor: pointer;
  font-family: inherit;
}
.btn-primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn-primary:hover { background: var(--blue-deep); }
.btn-orange { background: var(--orange); color: #fff; border-color: var(--orange); }
.btn-orange:hover { background: var(--orange-deep); }
.btn-ghost { background: var(--surface); color: var(--ink); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue-deep); }

.chain-figure, .hero-image { background: var(--surface); border: 0.5px solid var(--line); border-radius: 14px; padding: 24px; }
.chain-figure svg { width: 100%; height: auto; display: block; }
.chain-caption { font-size: 13px; color: var(--ink-soft); margin-top: 14px; text-align: center; }
.hero-image img { width: 100%; height: auto; border-radius: 8px; }
.hero-image figcaption { font-size: 13px; color: var(--ink-soft); margin-top: 12px; text-align: center; }

/* ---------- section shells ---------- */
section { padding: 56px 0; border-top: 0.5px solid var(--line); }
.section-head { max-width: 640px; margin-bottom: 32px; }
.section-tag { font-size: 13px; color: var(--orange-deep); font-weight: 500; margin-bottom: 8px; }
h2.section-title { font-size: 27px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
@media (max-width: 760px) { .two-col { grid-template-columns: 1fr; } }

.bullet-list { list-style: none; margin: 0; padding: 0; }
.bullet-list li { position: relative; padding-left: 22px; margin-bottom: 10px; color: var(--ink-soft); }
.bullet-list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--blue);
}

/* ---------- gelijkwaardige trainingen (SMART / N-back) ---------- */
.training-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 760px) { .training-grid { grid-template-columns: 1fr; } }
.training-card { background: var(--surface); border: 0.5px solid var(--line); border-radius: 14px; padding: 26px 26px 24px; border-top: 3px solid var(--blue); }
.training-card.orange { border-top-color: var(--orange); }
.training-card .tag {
  display: inline-block; font-size: 12px; font-weight: 500; padding: 3px 10px;
  border-radius: 999px; background: var(--blue-pale); color: var(--blue-deep); margin-bottom: 12px;
}
.training-card.orange .tag { background: var(--orange-pale); color: var(--orange-deep); }
.training-card h3 { font-size: 18px; margin-bottom: 10px; }
.training-card p { font-size: 14.5px; }
.training-card img { margin-top: 14px; }

/* ---------- praktische info ---------- */
.practical-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 760px) { .practical-grid { grid-template-columns: 1fr; } }
.info-card { background: var(--surface); border: 0.5px solid var(--line); border-radius: 12px; padding: 22px 24px; }
.info-card h3 { font-size: 16px; margin-bottom: 10px; }
.info-card p { font-size: 14.5px; margin-bottom: 0; }

/* ---------- timeline ---------- */
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 8px; }
@media (max-width: 760px) { .timeline { grid-template-columns: 1fr; } }
.tl-item { position: relative; padding: 24px 18px 4px 0; border-top: 2px solid var(--blue); }
@media (max-width: 760px) {
  .tl-item { border-top: none; border-left: 2px solid var(--blue); padding: 4px 0 24px 18px; }
}
.tl-item .tl-when { font-size: 13px; color: var(--blue-deep); font-weight: 500; margin-bottom: 6px; }
.tl-item h3 { font-size: 15.5px; margin-bottom: 6px; }
.tl-item p { font-size: 13.5px; margin-bottom: 0; }

/* ---------- faq ---------- */
.faq-item { border-top: 0.5px solid var(--line); padding: 18px 0; }
.faq-item:last-child { border-bottom: 0.5px solid var(--line); }
.faq-item summary { cursor: pointer; font-size: 16px; font-weight: 500; list-style: none; display: flex; justify-content: space-between; gap: 16px; align-items: baseline; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--orange); flex-shrink: 0; }
.faq-item[open] summary::after { content: "–"; }
.faq-item .faq-a { margin-top: 12px; font-size: 15px; }

/* ---------- feiten-strip ---------- */
.fact-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 8px; }
@media (max-width: 760px) { .fact-strip { grid-template-columns: 1fr 1fr; } }
.fact { background: var(--surface); border: 0.5px solid var(--line); border-radius: 10px; padding: 16px 18px; border-bottom: 3px solid var(--orange); }
.fact .num { font-family: 'Source Serif 4', serif; font-size: 22px; color: var(--blue-deep); }
.fact .label { font-size: 13px; color: var(--ink-soft); margin-top: 4px; }

/* ---------- keuzekaarten (index) ---------- */
.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 760px) { .choice-grid { grid-template-columns: 1fr; } }
.choice-card {
  display: block; text-decoration: none; background: var(--surface);
  border: 0.5px solid var(--line); border-radius: 16px; padding: 30px 28px;
  transition: border-color .15s;
}
.choice-card:hover { border-color: var(--blue); }
.choice-card .tag { display: inline-block; font-size: 12px; font-weight: 500; padding: 3px 10px; border-radius: 999px; background: var(--orange-pale); color: var(--orange-deep); margin-bottom: 14px; }
.choice-card h3 { font-size: 21px; color: var(--ink); margin-bottom: 10px; }
.choice-card p { font-size: 14.5px; margin-bottom: 0; }
.choice-card .go { margin-top: 16px; font-size: 14px; color: var(--blue-deep); font-weight: 500; }

/* ---------- contact ---------- */
.contact-box { background: var(--blue-deep); color: #fff; border-radius: 16px; padding: 44px 40px; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 32px; align-items: center; }
@media (max-width: 760px) { .contact-box { grid-template-columns: 1fr; padding: 32px 24px; } }
.contact-box h2 { color: #fff; font-size: 24px; }
.contact-box p { color: #E4F6FF; }
.contact-box .btn-orange { background: var(--orange); border-color: var(--orange); }
.contact-box .btn-orange:hover { background: var(--orange-deep); }

/* ---------- footer ---------- */
footer { padding: 44px 0 60px; }
.lit-list { list-style: none; padding: 0; margin: 0; font-size: 13.5px; }
.lit-list li { margin-bottom: 10px; color: var(--ink-soft); }
.footer-meta { margin-top: 32px; padding-top: 24px; border-top: 0.5px solid var(--line); font-size: 12.5px; color: var(--ink-soft); display: flex; gap: 18px; flex-wrap: wrap; }
.footer-logos {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 0.5px solid var(--line);
}
.footer-logos img {
  height: 100px;
  width: auto;
  border-radius: 0;
}
.footer-partner { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 16px; font-size: 13px; color: var(--ink-soft); }
.footer-partner img { height: 80px; width: auto; border-radius: 0; }
.footer-meta { border-top: none; padding-top: 0; margin-top: 20px; }