/* gnk-verkeersregelaars.nl — één stylesheet, geen externe fonts of frameworks */
:root {
  --ink: #16212e;
  --muted: #566476;
  --line: #dfe5ec;
  --bg: #ffffff;
  --bg-alt: #f2f6f9;
  --navy: #224d9c;      /* GNK-blauw uit het logo */
  --navy-dark: #163670;
  --accent: #ffec01;    /* GNK-geel; alleen als vlak met donkere tekst, niet als tekstkleur op wit */
  --accent-dark: #224d9c;
  --radius: 10px;
  --wrap: 1120px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; font: 17px/1.6 var(--font); color: var(--ink); background: var(--bg); -webkit-text-size-adjust: 100%; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); text-underline-offset: 2px; }
a:hover { color: var(--accent-dark); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; color: var(--navy-dark); }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.85rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 100; background: #fff; padding: 8px 12px; }
.lead { font-size: 1.15rem; color: var(--muted); }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; font-weight: 600; color: var(--accent-dark); margin-bottom: .5em; }
.eyebrow a { color: inherit; text-decoration: none; }

/* knoppen */
.btn { display: inline-block; background: var(--accent); color: var(--navy-dark); font-weight: 600; text-decoration: none; padding: .75em 1.4em; border-radius: 999px; border: 2px solid var(--accent); cursor: pointer; font: inherit; font-weight: 600; transition: background .15s, border-color .15s; }
.btn:hover { background: #fff35c; border-color: #fff35c; color: var(--navy-dark); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }

/* kopbalk */
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; gap: 24px; min-height: 68px; }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { height: 48px; width: auto; border-radius: 4px; }
.nav { margin-left: auto; }
.nav ul { list-style: none; margin: 0; padding: 0; }
.nav > ul { display: flex; gap: 4px; }
.nav li { position: relative; }
.nav a { display: block; padding: 8px 10px; text-decoration: none; color: var(--ink); font-size: .95rem; border-radius: 6px; }
.nav a:hover, .nav li.active > a, .nav a[aria-current="page"] { color: var(--accent-dark); }
.nav .sub { display: none; position: absolute; top: 100%; left: 0; min-width: 230px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 6px; box-shadow: 0 10px 30px rgba(18,58,94,.12); }
.nav li[data-sub]:hover > .sub, .nav li[data-sub]:focus-within > .sub { display: block; }
.topbar-phone { white-space: nowrap; font-weight: 600; text-decoration: none; color: var(--navy); }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 6px; padding: 8px 14px; font: inherit; color: var(--navy-dark); cursor: pointer; }

@media (max-width: 1020px) {
  .topbar-phone { display: none; }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 20px 16px; }
  .nav.open { display: block; }
  .nav > ul { flex-direction: column; }
  .nav .sub { display: block; position: static; border: 0; box-shadow: none; padding: 0 0 0 14px; min-width: 0; }
  .nav a { padding: 10px 4px; }
}

/* hero */
.hero { background: linear-gradient(135deg, var(--navy-dark), var(--navy)); color: #fff; border-bottom: 8px solid var(--accent); }
.hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; padding-top: 64px; padding-bottom: 64px; }
.hero h1 { color: #fff; }
.hero .eyebrow { color: var(--accent); }
.hero .lead { color: rgba(255,255,255,.85); }
.hero-img img { border-radius: 14px; box-shadow: 0 20px 50px rgba(0,0,0,.3); aspect-ratio: 3 / 2; object-fit: cover; width: 100%; }
.hero-img { margin: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 32px; padding-top: 40px; padding-bottom: 40px; }
}

/* secties */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 680px; margin-bottom: 32px; }
.section-head p { color: var(--muted); }
.page-head { background: var(--bg-alt); border-bottom: 1px solid var(--line); padding: 44px 0 28px; }
.page-head .lead { max-width: 720px; }
.page-head + .section { padding-top: 44px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 32px; } .section { padding: 44px 0; } }
.note { color: var(--muted); margin-top: 24px; }

/* over ons */
.about { display: grid; grid-template-columns: 1fr minmax(200px, 300px); gap: 48px; align-items: start; }
.about-img { margin: 0; }
.about-img img { border-radius: var(--radius); box-shadow: 0 12px 30px rgba(22,54,112,.15); }
.checks { list-style: none; padding: 0; margin: 0 0 1.6em; }
.checks li { position: relative; padding: 0 0 .9em 34px; }
.checks li::before { content: ""; position: absolute; left: 0; top: .25em; width: 20px; height: 20px; border-radius: 50%; background: var(--accent); box-shadow: inset 0 0 0 6px var(--accent), inset 0 0 0 20px var(--navy); }
.vacature { background: var(--bg-alt); border-left: 6px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; padding: 22px 24px 8px; scroll-margin-top: 84px; }
.vacature h2 { font-size: 1.3rem; }
@media (max-width: 760px) { .about { grid-template-columns: 1fr; gap: 28px; } .about-img { max-width: 260px; } }

/* contact */
.section-contact { background: var(--bg-alt); }
.contact-list { list-style: none; padding: 0; margin: 24px 0 0; }
.contact-list li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.contact-list span { display: block; font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.form { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 26px; display: grid; gap: 14px; }
.form label { display: grid; gap: 4px; font-weight: 600; font-size: .93rem; }
.form small { font-weight: 400; color: var(--muted); }
.form input, .form textarea { font: inherit; font-weight: 400; padding: 10px 12px; border: 1px solid #c7d1dc; border-radius: 8px; width: 100%; }
.form input:focus, .form textarea:focus { outline: 2px solid var(--navy); outline-offset: 1px; border-color: var(--navy); }
.form .btn { justify-self: start; }
.form-status { margin: 0; min-height: 1.4em; font-size: .95rem; }
.form-status.ok { color: #157a3a; font-weight: 600; }
.form-status.err { color: #b42318; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* voet */
.footer { background: var(--navy-dark); color: rgba(255,255,255,.8); font-size: .92rem; padding: 40px 0; }
.footer a { color: #fff; }
.footer strong { color: #fff; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; }
@media (max-width: 760px) { .footer-inner { grid-template-columns: 1fr; } }