:root { --ink: #1d2a24; --muted: #68746e; --cream: #f7f5ee; --sage: #dce8dc; --green: #274d3a; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--cream); font-family: Arial, Arial, sans-serif; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
main { min-height: 100vh; position: relative; overflow: hidden; }
.ambient { position: fixed; border-radius: 999px; filter: blur(1px); pointer-events: none; opacity: .7; }
.ambient-one { width: 38rem; height: 38rem; background: #e4eddf; right: -14rem; top: -19rem; }
.ambient-two { width: 27rem; height: 27rem; background: #efe2d0; left: -16rem; bottom: -13rem; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; position: relative; }
.topbar { min-height: 92px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(39,77,58,.13); }
.site-header { position: relative; z-index: 20; }
.brand { color: var(--ink); text-decoration: none; display: inline-flex; gap: 11px; align-items: center; font-weight: 720; letter-spacing: -.02em; }
.brand-mark { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; color: white; background: var(--green); box-shadow: 0 7px 18px rgba(39,77,58,.18); }
.date { margin: 0; color: var(--muted); font-size: 13px; }
.site-menu { display: flex; align-items: center; gap: 4px; }
.site-menu a { color: #637069; text-decoration: none; font-size: 13px; padding: 10px 14px; border-radius: 10px; transition: .18s ease; }
.site-menu a:hover { color: var(--green); background: rgba(255,255,255,.65); }
.site-menu a[aria-current="page"] { color: white; background: var(--green); }
.menu-group { position: relative; }
.menu-group summary { list-style: none; color: #637069; font-size: 13px; padding: 10px 14px; border-radius: 10px; cursor: pointer; transition: .18s ease; }
.menu-group summary::-webkit-details-marker { display: none; }
.menu-group summary:hover, .menu-group summary.active { color: var(--green); background: rgba(255,255,255,.65); }
.menu-group summary span { display: inline-block; margin-left: 4px; transition: transform .18s ease; }
.menu-group[open] summary span { transform: rotate(180deg); }
.submenu { position: absolute; top: calc(100% + 8px); left: 0; min-width: 180px; padding: 8px; border: 1px solid rgba(39,77,58,.13); border-radius: 13px; background: rgba(250,249,244,.98); box-shadow: 0 15px 36px rgba(31,48,39,.13); }
.submenu a { display: block; white-space: nowrap; }
.menu-toggle { display: none; border: 0; background: transparent; width: 42px; height: 42px; padding: 10px; border-radius: 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 4px 0; border-radius: 2px; background: var(--green); }
.hero { padding: 76px 0 42px; max-width: 720px; }
.eyebrow { font: 650 11px/1 ui-monospace, monospace; letter-spacing: .18em; color: #667e6d; margin: 0 0 22px; }
h1 { margin: 0; font-size: clamp(46px, 7vw, 78px); line-height: .98; letter-spacing: -.06em; font-weight: 620; }
.intro { color: var(--muted); font-size: clamp(17px, 2vw, 20px); margin: 24px 0 30px; }
.search { width: min(570px, 100%); height: 58px; background: rgba(255,255,255,.78); border: 1px solid rgba(39,77,58,.16); box-shadow: 0 12px 40px rgba(31,48,39,.07); border-radius: 17px; display: flex; align-items: center; padding: 0 18px; gap: 13px; transition: .2s ease; }
.search:focus-within { border-color: #75927e; box-shadow: 0 14px 45px rgba(31,48,39,.11), 0 0 0 3px rgba(117,146,126,.12); }
.search > span { font-size: 25px; color: #718078; transform: rotate(-15deg); }
.search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); }
.search input::placeholder { color: #919a95; }
.search button { border: 0; background: #edf0ec; color: #66726c; width: 27px; height: 27px; border-radius: 50%; cursor: pointer; }
.filters { display: flex; gap: 7px; overflow-x: auto; padding: 0 0 28px; scrollbar-width: none; }
.filters::-webkit-scrollbar { display: none; }
.filters button { white-space: nowrap; border: 1px solid rgba(39,77,58,.15); background: rgba(255,255,255,.35); color: #66726c; padding: 9px 15px; border-radius: 999px; cursor: pointer; transition: .18s ease; }
.filters button:hover { background: white; color: var(--ink); }
.filters button.active { background: var(--green); color: white; border-color: var(--green); }
.filters a { white-space: nowrap; border: 1px solid rgba(39,77,58,.15); background: rgba(255,255,255,.35); color: #66726c; padding: 9px 15px; border-radius: 999px; text-decoration: none; font-size: 13px; transition: .18s ease; }
.filters a:hover { background: var(--green); border-color: var(--green); color: white; }
.back-link { color: var(--green); text-decoration: none; font-size: 13px; }
.subpage-hero { max-width: 840px; padding-bottom: 36px; }
.subpage-hero h1 { font-size: clamp(44px, 7vw, 74px); }
.leercentrum-banner { position: relative; aspect-ratio: 3.8 / 1; margin-top: 34px; overflow: hidden; border-radius: 26px; box-shadow: 0 20px 50px rgba(31,48,39,.14); }
.leercentrum-banner img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.leercentrum-banner-copy { position: absolute; z-index: 1; left: clamp(24px, 5vw, 72px); top: 50%; width: 54%; transform: translateY(-50%); }
.leercentrum-banner-copy .eyebrow { margin-bottom: 14px; }
.leercentrum-banner-copy h1 { margin: 0; color: #173e2f; font-family: Georgia, "Times New Roman", serif; font-size: clamp(38px, 5.6vw, 76px); font-weight: 500; letter-spacing: -.045em; line-height: .98; }
.leercentrum-intro { padding-top: 34px; }
.home-intro { padding-top: 34px; }
.category-title h2 { margin: 0; font-size: 16px; letter-spacing: -.02em; }
.ns-grid { grid-template-columns: repeat(2, 1fr); }
.info-note { margin: -30px 0 38px; padding: 18px 20px; border-radius: 16px; background: #e8eee6; color: #56665d; font-size: 13px; display: flex; gap: 12px; }
.info-note strong { color: var(--green); }
.contact-layout { min-height: calc(100vh - 181px); display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(45px, 8vw, 100px); align-items: center; padding: 70px 0; }
.contact-copy h1 { font-size: clamp(48px, 6vw, 74px); }
.contact-note { display: flex; gap: 14px; align-items: flex-start; margin-top: 38px; color: var(--muted); font-size: 13px; line-height: 1.6; }
.contact-note > span { width: 34px; height: 34px; flex: 0 0 34px; border-radius: 10px; display: grid; place-items: center; color: var(--green); background: #e4ece2; }
.contact-note p { margin: 0; }.contact-note strong { color: var(--ink); }
.contact-form { background: rgba(255,255,255,.76); border: 1px solid rgba(39,77,58,.12); border-radius: 24px; padding: clamp(24px,4vw,38px); box-shadow: 0 18px 55px rgba(31,48,39,.08); display: flex; flex-direction: column; gap: 19px; }
.contact-form label { color: #526058; font-size: 12px; font-weight: 650; letter-spacing: .01em; display: flex; flex-direction: column; gap: 8px; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid rgba(39,77,58,.16); border-radius: 12px; background: #fbfcf9; padding: 13px 14px; color: var(--ink); outline: none; resize: vertical; font: 400 14px/1.5 Arial, sans-serif; }
.contact-form input:focus, .contact-form textarea:focus { border-color: #75927e; box-shadow: 0 0 0 3px rgba(117,146,126,.12); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.submit-button { height: 50px; border: 0; border-radius: 13px; background: var(--green); color: white; padding: 0 18px; font-weight: 650; display: flex; align-items: center; justify-content: space-between; cursor: pointer; transition: .18s ease; }
.submit-button:hover { background: #1d3d2d; transform: translateY(-1px); }.submit-button:disabled { opacity: .65; cursor: wait; }
.form-status { min-height: 18px; color: var(--muted); font-size: 13px; }.form-status.sent { color: #247044; }.form-status.error { color: #a43b32; }
.honeypot { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.link-section { padding: 7px 0 60px; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 18px; }
.section-heading h2 { margin: 0; font-size: 18px; letter-spacing: -.02em; }
.section-heading span { color: #849089; font-size: 13px; }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: start; }
.category-card { background: rgba(255,255,255,.72); border: 1px solid rgba(39,77,58,.11); border-radius: 22px; padding: 19px; box-shadow: 0 4px 18px rgba(31,48,39,.035); }
.category-title { display: flex; align-items: center; gap: 11px; padding-bottom: 15px; border-bottom: 1px solid rgba(39,77,58,.1); }
.category-title > span { width: 35px; height: 35px; border-radius: 11px; background: #e7eee6; color: var(--green); display: grid; place-items: center; font-weight: 750; }
.category-title h3 { margin: 0; font-size: 16px; letter-spacing: -.02em; }
.category-title small { margin-left: auto; color: #8a958e; }
.link-list { display: flex; flex-direction: column; padding-top: 9px; }
.link-list a { color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 10px; min-height: 39px; padding: 7px 8px; border-radius: 9px; font-size: 13px; line-height: 1.3; transition: .16s ease; }
.link-list a:hover { background: #edf2ec; color: var(--green); }
.link-list a span { min-width: 0; }.link-list a b { margin-left: auto; color: #96a099; font-weight: 400; opacity: 0; transition: .16s ease; }.link-list a:hover b { opacity: 1; transform: translate(1px,-1px); }
.card { min-height: 116px; background: rgba(255,255,255,.7); border: 1px solid rgba(39,77,58,.11); border-radius: 20px; padding: 21px; display: flex; align-items: center; gap: 16px; text-decoration: none; color: var(--ink); box-shadow: 0 4px 18px rgba(31,48,39,.035); transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.card:hover { transform: translateY(-3px); background: white; box-shadow: 0 16px 35px rgba(31,48,39,.09); }
.card:focus-visible { outline: 3px solid rgba(39,77,58,.35); outline-offset: 2px; }
.icon { flex: 0 0 52px; height: 52px; display: grid; place-items: center; border-radius: 15px; color: white; font-size: 15px; font-weight: 800; letter-spacing: -.04em; }
.icon.blue { background: #1f4f9c; }.icon.sky { background: #3887b9; }.icon.red { background: #c9483c; }.icon.black { background: #242827; }.icon.green { background: #26945b; }.icon.paper { background: #eceae3; color: #282d2a; font-family: Georgia, serif; font-size: 25px; }.icon.yellow { background: #e7b744; color: #23362b; font-size: 23px; }
.card-copy { min-width: 0; display: flex; flex-direction: column; gap: 7px; }
.card-copy strong { font-size: 16px; letter-spacing: -.015em; }
.card-copy small { color: var(--muted); line-height: 1.45; font-size: 13px; }
.arrow { margin-left: auto; color: #89958e; align-self: flex-start; font-size: 17px; transition: transform .2s ease; }
.card:hover .arrow { transform: translate(2px,-2px); color: var(--green); }
.empty { min-height: 245px; border: 1px dashed rgba(39,77,58,.22); border-radius: 22px; display: grid; place-content: center; text-align: center; background: rgba(255,255,255,.35); }
.empty span { font-size: 35px; color: #809087; }.empty h3 { margin: 10px 0 5px; }.empty p { margin: 0; color: var(--muted); font-size: 14px; }
footer { border-top: 1px solid rgba(39,77,58,.12); min-height: 88px; display: flex; align-items: center; justify-content: space-between; color: #7d8982; font-size: 12px; }
footer a { color: var(--green); text-decoration: none; }
@media (max-width: 900px) { .category-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 700px) { .shell { width: min(100% - 28px, 1120px); }.topbar { min-height: 75px; }.date { display: none; }.menu-toggle { display: block; }.site-menu { display: none; position: absolute; top: 66px; right: 0; left: 0; padding: 10px; background: rgba(250,249,244,.98); border: 1px solid rgba(39,77,58,.13); border-radius: 16px; box-shadow: 0 18px 40px rgba(31,48,39,.12); flex-direction: column; align-items: stretch; }.site-menu.open { display: flex; }.site-menu a { padding: 13px 14px; }.hero { padding: 55px 0 35px; }.leercentrum-banner-copy { left: 20px; width: 57%; }.leercentrum-banner-copy .eyebrow { margin-bottom: 8px; font-size: 9px; letter-spacing: .12em; }.leercentrum-banner-copy h1 { font-size: clamp(25px, 7vw, 38px); }.leercentrum-intro { padding-top: 28px; }.category-grid, .ns-grid { grid-template-columns: 1fr; }.link-section { padding-bottom: 42px; }.back-link { font-size: 0; }.back-link::after { content: "← Terug"; font-size: 13px; }.info-note { align-items: flex-start; }.contact-layout { grid-template-columns: 1fr; gap: 30px; padding: 50px 0; }.contact-note { margin-top: 26px; }.form-row { grid-template-columns: 1fr; } footer { min-height: 76px; } }
@media (max-width: 700px) {
  .site-menu .menu-group { width: 100%; }
  .site-menu .menu-group summary { padding: 13px 14px; }
  .site-menu .submenu { position: static; min-width: 0; margin: 4px 0 0 12px; padding: 5px; box-shadow: none; background: rgba(230,237,228,.6); }
  .site-menu .submenu a[aria-current="page"] { color: var(--green); background: transparent; font-weight: 700; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }