/* o-IRT-o — basisstijl
   Kleuren afgeleid van het logo (zwart / rood). Alle tekstcombinaties
   voldoen aan WCAG 2.2 AA (contrast ≥ 4.5:1 voor tekst, ≥ 3:1 voor UI). */

:root {
  --ink: #111111;          /* tekst op wit: 18.9:1 */
  --ink-soft: #3d3d3d;     /* secundaire tekst op wit: 10.9:1 */
  --paper: #ffffff;
  --paper-alt: #f5f4f2;    /* ink-soft hierop: 10:1 */
  --red: #b3121b;          /* op wit: 6.9:1 */
  --red-dark: #8a0e15;     /* hover, op wit: 9.4:1 */
  --line: #d9d6d2;
  --focus: #1a5fd0;        /* focusring, op wit: 5.6:1 */
  --radius: 10px;
  --max: 72rem;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}

img { max-width: 100%; height: auto; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: -.01em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

a { color: var(--red); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--red-dark); text-decoration-thickness: 2px; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 1rem; }
@media (min-width: 48rem) { .container { padding: 0 2rem; } }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Skiplink */
.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 100;
  background: var(--ink); color: #fff; padding: .75rem 1rem; border-radius: var(--radius);
  font-weight: 600;
}
.skip-link:focus { top: 1rem; color: #fff; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.4) blur(6px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.25rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.15rem; }
.brand:hover { color: var(--ink); }
.brand img { width: 48px; height: auto; }
.brand-name { font-family: var(--mono); letter-spacing: .02em; }

.nav-toggle {
  display: none;
  align-items: center; gap: .5rem;
  font: inherit; font-weight: 600;
  background: var(--paper); color: var(--ink);
  border: 2px solid var(--ink); border-radius: var(--radius);
  padding: .45rem .8rem; min-height: 44px; cursor: pointer;
}
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after {
  display: block; width: 18px; height: 2px; background: currentColor; position: relative; content: "";
}
.nav-toggle-bars::before { position: absolute; top: -6px; }
.nav-toggle-bars::after { position: absolute; top: 6px; }

.site-nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: .25rem; margin: 0; padding: 0; }
.site-nav a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 .8rem;
  color: var(--ink); text-decoration: none; font-weight: 500; border-radius: var(--radius);
}
.site-nav a:hover { background: var(--paper-alt); color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--red); box-shadow: inset 0 -3px 0 var(--red); border-radius: 0; }
.site-nav .nav-cta {
  background: var(--red); color: #fff; margin-left: .25rem;
}
.site-nav .nav-cta:hover { background: var(--red-dark); color: #fff; }
.site-nav .nav-cta[aria-current="page"] { color: #fff; box-shadow: none; border-radius: var(--radius); }

/* Mobiel menu: alleen inklappen als JS beschikbaar is */
@media (max-width: 52rem) {
  .js .nav-toggle { display: inline-flex; }
  .js .site-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 1px solid var(--line); }
  .js .site-nav.is-open { display: block; }
  .js .site-nav ul { flex-direction: column; padding: .5rem 1rem 1rem; }
  .js .site-nav a { width: 100%; }
  .js .site-nav .nav-cta { margin: .5rem 0 0; justify-content: center; }
  .js .site-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--red); }
  .js .site-nav .nav-cta[aria-current="page"] { box-shadow: none; }
}

/* Hero */
.hero { padding: 4rem 0 3.5rem; background: linear-gradient(90deg, var(--paper) 0 60%, var(--paper-alt) 60% 100%); border-bottom: 1px solid var(--line); }
.hero-inner { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 52rem) { .hero-inner { grid-template-columns: 1.4fr 1fr; } }
.eyebrow {
  display: inline-block; font-family: var(--mono); font-size: .9rem; font-weight: 600;
  color: var(--red); text-transform: uppercase; letter-spacing: .08em; margin-bottom: .75rem;
}
.lead { font-size: 1.2rem; color: var(--ink-soft); max-width: 38rem; }
.hero-logo { justify-self: center; width: min(220px, 60vw); }
@media (max-width: 52rem) { .hero { background: var(--paper); } .hero-logo { grid-row: 1; width: 140px; } }

.button-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 48px; padding: .7rem 1.3rem; border-radius: var(--radius);
  font-weight: 600; text-decoration: none; border: 2px solid transparent;
}
.button-primary { background: var(--red); color: #fff; }
.button-primary:hover { background: var(--red-dark); color: #fff; }
.button-secondary { border-color: var(--ink); color: var(--ink); background: var(--paper); }
.button-secondary:hover { background: var(--ink); color: #fff; }

/* Secties */
.section { padding: 4.5rem 0; }
.section-alt { background: var(--paper-alt); }
.section-intro { max-width: 44rem; color: var(--ink-soft); }
.prose { max-width: 44rem; }

.statements { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: .75rem; grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); }
.statements li {
  padding: 1rem 1.1rem; background: var(--paper); border: 1px solid var(--line);
  border-left: 4px solid var(--ink); border-radius: var(--radius);
}
.statements li:nth-child(even) { border-left-color: var(--red); }

.values { list-style: none; padding: 0; margin: 2.5rem 0 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.value-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.value-card .num { font-family: var(--mono); color: var(--red); font-weight: 700; display: block; margin-bottom: .25rem; }
.value-card p { color: var(--ink-soft); margin: 0; }

/* Documentkaarten */
.doc-list { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); }
.doc-card {
  display: flex; flex-direction: column; gap: .5rem; height: 100%;
  padding: 1.5rem; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
}
.doc-card h3 { margin: 0; }
.doc-card p { color: var(--ink-soft); margin: 0; flex: 1; }
.doc-links { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; margin-top: .75rem; }
.doc-links a { font-weight: 600; display: inline-flex; align-items: center; min-height: 44px; }
.file-meta { font-weight: 400; color: var(--ink-soft); font-size: .9rem; margin-left: .3rem; }

/* Posts */
.post-card { max-width: 44rem; padding: 1.5rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.post-card time { font-family: var(--mono); font-size: .9rem; color: var(--ink-soft); }
.post-card h3 { margin: .35rem 0 .5rem; }
.post-card p { margin: 0; }

/* Deelnemers */
.participants { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); }
.participants a {
  position: relative;
  display: flex; flex-direction: column; gap: .9rem; height: 100%;
  padding: 1.25rem 1.25rem 1rem;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  color: var(--ink); text-decoration: none; font-weight: 500;
}
.participants a:hover { border-color: var(--ink); color: var(--ink); }
.participants a:hover .participant-name { text-decoration: underline; text-underline-offset: .18em; }
/* Logo's zijn decoratief (alt=""): de naam eronder is de linktekst */
.participant-logo { display: flex; align-items: center; justify-content: center; height: 56px; }
.participant-logo img { width: 100%; max-width: 200px; height: 100%; object-fit: contain; }
.participant-name {
  display: flex; justify-content: space-between; align-items: flex-start; gap: .5rem;
  padding-top: .75rem; border-top: 1px solid var(--line); font-size: .95rem; line-height: 1.4;
}
.participant-name::after { content: "↗"; color: var(--red); font-weight: 700; }

/* Stappenplan */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 2rem 0 0; display: grid; gap: 1rem; max-width: 50rem; }
.steps > li {
  counter-increment: step; position: relative;
  padding: 1.4rem 1.5rem 1.4rem 4.75rem;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
}
.steps > li::before {
  content: counter(step); position: absolute; left: 1.4rem; top: 1.3rem;
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); color: #fff; font-family: var(--mono); font-weight: 700;
}
.steps > li:nth-child(even)::before { background: var(--red); }
.steps h3 { margin-bottom: .35rem; }
.steps p:last-child, .steps ul:last-child { margin-bottom: 0; }

.callout {
  max-width: 50rem; margin: 2rem 0 0; padding: 1.25rem 1.5rem;
  border: 1px solid var(--line); border-left: 4px solid var(--red); border-radius: var(--radius);
  background: var(--paper);
}
.callout h2, .callout h3 { font-size: 1.1rem; margin-bottom: .4rem; }
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }

.check-list { padding-left: 1.25rem; }
.check-list li { margin-bottom: .4rem; }

.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; padding: 0; margin: 0 0 1rem; font-size: .95rem; }
.breadcrumb li + li::before { content: "/"; margin-right: .4rem; color: var(--ink-soft); }
.breadcrumb [aria-current="page"] { color: var(--ink-soft); }

.page-header { padding: 3rem 0 2.5rem; border-bottom: 1px solid var(--line); background: var(--paper-alt); }

/* Footer */
.site-footer { background: var(--ink); color: #e9e9e9; padding: 3rem 0 2rem; }
.site-footer a { color: #fff; }
.site-footer a:hover { color: #ffd6d8; }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.site-footer h2 { font-size: 1rem; color: #fff; text-transform: uppercase; letter-spacing: .08em; font-family: var(--mono); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li a { display: inline-flex; align-items: center; min-height: 36px; }
.footer-bottom { margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid #444; font-size: .9rem; color: #c8c8c8; }
.site-footer :focus-visible { outline-color: #8fb6ff; }

@media print {
  .site-header, .skip-link, .button-row, .site-footer { display: none; }
  .section, .hero, .page-header { padding: 1rem 0; background: none; }
}