/* Alfen-handleiding landingspagina (concept) · neutraal: wit, grijs, subtiele gradient, strak raster */
:root {
  --wit: #ffffff;
  --grijs-50: #f7f7f8;
  --grijs-100: #efeff1;
  --grijs-200: #e2e2e6;
  --grijs-400: #a3a3ab;
  --grijs-600: #62626b;
  --inkt: #141417;
  --accent: #2b2b31;
  --fout: #b42318;
  --rand: clamp(20px, 4vw, 56px);
  --kolom: min(100% - 2 * var(--rand), 1180px);
  --radius: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  font-family: 'Geist', system-ui, sans-serif;
  color: var(--inkt);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-size: clamp(16px, 0.3vw + 15px, 18px); line-height: 1.55; -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(1200px 600px at 85% -10%, #eceef3 0%, transparent 60%),
    radial-gradient(900px 500px at -10% 30%, #f3f3f5 0%, transparent 60%),
    var(--wit);
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }
a { color: inherit; }
.kolom { width: var(--kolom); margin-inline: auto; }
:focus-visible { outline: 2px solid var(--inkt); outline-offset: 3px; border-radius: 6px; }

.conceptbalk { background: var(--inkt); color: #d9d9de; font: 500 12px/1 'Geist Mono', monospace; letter-spacing: .04em; text-transform: uppercase; text-align: center; padding: 9px 12px; }

.label { font: 500 12px/1.2 'Geist Mono', monospace; letter-spacing: .08em; text-transform: uppercase; color: var(--grijs-600); }
.klein { font-size: 14px; color: var(--grijs-600); }

/* kop */
.kop { display: flex; justify-content: space-between; align-items: center; padding-block: 22px; }
.merk { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; text-decoration: none; letter-spacing: -0.01em; }
.merk-teken { width: 30px; height: 30px; border-radius: 8px; background: var(--inkt); display: grid; place-items: center; }
.merk-teken svg { width: 16px; fill: #fff; }

/* knoppen */
.knop { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--inkt); color: #fff; text-decoration: none; font-weight: 500; padding: 14px 22px; border-radius: 999px; border: 0; font: inherit; font-weight: 500; cursor: pointer; transition: transform .3s var(--ease), background .2s; }
.knop:hover { background: #000; transform: translateY(-1px); }
.knop-klein { padding: 10px 16px; font-size: 14px; }
.knop-vol { width: 100%; margin-top: 8px; }
.link-pijl { font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--grijs-200); padding-bottom: 2px; transition: border-color .2s; }
.link-pijl::after { content: ' →'; }
.link-pijl:hover { border-color: var(--inkt); }

/* 1 hero */
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; padding-block: clamp(32px, 6vw, 88px) clamp(56px, 8vw, 112px); }
.hero h1 { font-size: clamp(40px, 5.6vw, 76px); line-height: 1.02; letter-spacing: -0.035em; font-weight: 600; margin-top: 18px; }
.nadruk { background: linear-gradient(100deg, #141417 10%, #7b7b86 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.intro { margin-top: 22px; max-width: 34em; color: var(--grijs-600); font-size: clamp(17px, 0.5vw + 15px, 20px); }
.hero-acties { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 32px; }
.hero-feiten { display: flex; gap: 0; margin-top: 44px; border-top: 1px solid var(--grijs-200); }
.hero-feiten li { flex: 1; padding: 16px 0 0; display: grid; gap: 2px; }
.hero-feiten li + li { padding-left: 20px; border-left: 1px solid var(--grijs-200); margin-left: 20px; }
.hero-feiten strong { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; }
.hero-feiten span { font-size: 14px; color: var(--grijs-600); }
.hero-beeld { position: relative; aspect-ratio: 4 / 4.3; border-radius: 22px; overflow: hidden; background: linear-gradient(160deg, #f1f1f4, #dcdce2); box-shadow: 0 40px 80px -40px rgba(20,20,23,.35); }
.hero-beeld img { width: 100%; height: 100%; object-fit: cover; object-position: 70% 50%; }
.hero-beeld.geen-beeld img { display: none; }
.boekje { position: absolute; left: 7%; bottom: 7%; width: min(46%, 220px); aspect-ratio: 1 / 1.414; background: rgba(255,255,255,.9); backdrop-filter: blur(10px); border-radius: 6px; padding: 16px; display: flex; flex-direction: column; box-shadow: 0 24px 50px -18px rgba(0,0,0,.4); transform: rotate(-3deg); }
.boekje-label { font: 500 9px/1 'Geist Mono', monospace; letter-spacing: .1em; text-transform: uppercase; color: var(--grijs-600); margin-top: auto; }
.boekje-titel { font-size: clamp(16px, 1.6vw, 22px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; margin-top: 6px; }
.boekje-sub { font-size: 12px; color: var(--grijs-600); margin-top: 4px; }
.boekje-voet { font-size: 10px; font-weight: 600; margin-top: auto; padding-top: 10px; border-top: 1px solid var(--grijs-200); }

/* secties */
.sectie { padding-block: clamp(56px, 8vw, 104px); border-top: 1px solid var(--grijs-200); }
.sectie-kop { max-width: 640px; margin-bottom: clamp(32px, 4vw, 52px); }
.sectie-kop h2 { font-size: clamp(28px, 3.2vw, 44px); line-height: 1.08; letter-spacing: -0.03em; font-weight: 600; margin-top: 14px; }
.sectie-kop-rij { max-width: none; display: flex; justify-content: space-between; align-items: end; gap: 32px; }
.sectie-kop-rij .klein { max-width: 22em; }

/* 2 wat je krijgt */
.raster-4 { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--grijs-200); border-radius: var(--radius); background: var(--wit); overflow: hidden; }
.tegel { padding: 28px 24px 32px; display: grid; gap: 10px; align-content: start; }
.tegel + .tegel { border-left: 1px solid var(--grijs-200); }
.tegel .nr { font: 500 12px 'Geist Mono', monospace; color: var(--grijs-400); }
.tegel h3 { font-size: 19px; font-weight: 600; letter-spacing: -0.015em; margin-top: 22px; }
.tegel p { color: var(--grijs-600); font-size: 15px; }

/* 3 preview */
.preview-sectie { background: linear-gradient(180deg, var(--grijs-50), #ececf0); border-top: 1px solid var(--grijs-200); }
.paginas { display: flex; gap: 24px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 8px calc((100% - var(--kolom)) / 2) 28px; scroll-padding-inline: calc((100% - var(--kolom)) / 2); scrollbar-width: thin; }
.pagina { position: relative; flex: 0 0 auto; width: clamp(240px, 26vw, 300px); aspect-ratio: 1 / 1.414; background: var(--wit); border-radius: 4px; padding: 26px 24px 22px; box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 18px 40px -22px rgba(20,20,23,.3); scroll-snap-align: start; display: flex; flex-direction: column; font-size: 12.5px; line-height: 1.5; overflow: hidden; }
.stempel { position: absolute; top: 14px; right: -30px; transform: rotate(35deg); background: #f2d64b; color: var(--inkt); font: 600 9px/1 'Geist Mono', monospace; letter-spacing: .12em; text-transform: uppercase; padding: 5px 34px; }
.pagina-kop { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 14px; }
.pagina-kop-2 { margin: 16px 0 8px; }
.pagina-tekst { color: var(--grijs-600); }
.paginanr { margin-top: auto; padding-top: 12px; font: 500 10px 'Geist Mono', monospace; color: var(--grijs-400); text-align: right; }
.pagina-cover { background: linear-gradient(160deg, #fafafb 0%, #e4e4e9 100%); }
.cover-boven, .cover-onder { display: flex; justify-content: space-between; font: 500 10px 'Geist Mono', monospace; color: var(--grijs-600); }
.mini-merk { font-family: 'Geist', sans-serif; font-weight: 600; color: var(--inkt); }
.cover-midden { margin-block: auto; }
.cover-midden h3 { font-size: 30px; line-height: 1.02; letter-spacing: -0.03em; font-weight: 600; margin-top: 10px; }
.cover-midden p { color: var(--grijs-600); margin-top: 8px; font-size: 13px; }
.inhoud li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--grijs-100); }
.inhoud li span:last-child { font-family: 'Geist Mono', monospace; color: var(--grijs-400); }
.kader { margin-top: 18px; background: var(--grijs-50); border: 1px solid var(--grijs-100); border-radius: 8px; padding: 12px 14px; color: var(--grijs-600); }
.kader-kop { font-weight: 600; color: var(--inkt); margin-bottom: 4px; }
.kader-let { border-left: 3px solid var(--inkt); }
.stappen { counter-reset: s; display: grid; gap: 10px; }
.stappen li { counter-increment: s; display: grid; grid-template-columns: 22px 1fr; gap: 8px; }
.stappen li::before { content: counter(s); width: 20px; height: 20px; border-radius: 50%; background: var(--inkt); color: #fff; font: 600 10px/20px 'Geist Mono', monospace; text-align: center; }
.aanvulling { margin-top: 14px; padding: 8px 10px; border: 1px dashed var(--grijs-400); border-radius: 6px; color: var(--grijs-600); font-style: italic; }
.vinkjes { display: grid; gap: 9px; }
.vinkjes li { position: relative; padding-left: 22px; }
.vinkjes li::before { content: ''; position: absolute; left: 0; top: .3em; width: 13px; height: 13px; border-radius: 50%; border: 1.5px solid var(--inkt); background: radial-gradient(circle, var(--inkt) 35%, transparent 40%); }
.vinkjes-klein { margin-top: 22px; font-size: 15px; color: var(--grijs-600); }
.preview-voet { padding-top: 8px; }

/* 4 formulier */
.form-blok { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: start; }
.form-uitleg h2 { font-size: clamp(28px, 3.2vw, 44px); line-height: 1.08; letter-spacing: -0.03em; font-weight: 600; margin: 14px 0 18px; }
.form-uitleg > p { color: var(--grijs-600); max-width: 30em; }
.formulier, .bedankt { background: var(--wit); border: 1px solid var(--grijs-200); border-radius: 20px; padding: clamp(22px, 3vw, 36px); box-shadow: 0 30px 60px -40px rgba(20,20,23,.35); }
.veld { display: grid; gap: 6px; margin-bottom: 14px; }
.veld label { font-size: 14px; font-weight: 500; }
.veld input { font: inherit; padding: 13px 14px; border: 1px solid var(--grijs-200); border-radius: 10px; background: var(--grijs-50); transition: border-color .2s, background .2s; min-height: 48px; }
.veld input:focus { outline: none; border-color: var(--inkt); background: var(--wit); }
.veld input[aria-invalid="true"] { border-color: var(--fout); }
.fout { color: var(--fout); font-size: 13px; min-height: 0; }
.fout:empty { display: none; }
.vink { display: grid; grid-template-columns: 20px 1fr; gap: 10px; font-size: 14px; color: var(--grijs-600); margin: 6px 0 4px; cursor: pointer; }
.vink input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--inkt); }
.form-noot { text-align: center; margin-top: 12px; font-size: 13px; }
.bedankt { text-align: left; display: grid; gap: 12px; animation: in .6s var(--ease); }
.bedankt[hidden] { display: none; }
.bedankt h3 { font-size: 26px; letter-spacing: -0.02em; font-weight: 600; }
.bedankt p { color: var(--grijs-600); }
.bedankt-vink { width: 44px; height: 44px; border-radius: 50%; background: var(--inkt); display: grid; place-items: center; }
.bedankt-vink svg { width: 22px; fill: none; stroke: #fff; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
@keyframes in { from { opacity: 0; transform: translateY(10px); } }

/* 5 FAQ */
.faq { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(32px, 5vw, 72px); }
.faq .sectie-kop { margin: 0; }
.faq-lijst details { border-bottom: 1px solid var(--grijs-200); }
.faq-lijst details:first-child { border-top: 1px solid var(--grijs-200); }
.faq-lijst summary { list-style: none; cursor: pointer; padding: 20px 36px 20px 0; font-weight: 500; position: relative; }
.faq-lijst summary::-webkit-details-marker { display: none; }
.faq-lijst summary::after { content: '+'; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: var(--grijs-600); transition: transform .3s var(--ease); }
.faq-lijst details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-lijst details p { padding: 0 0 20px; color: var(--grijs-600); max-width: 38em; }

.voet { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 32px 48px; border-top: 1px solid var(--grijs-200); font-size: 13px; color: var(--grijs-600); }

@media (max-width: 900px) {
  .hero, .form-blok, .faq { grid-template-columns: 1fr; }
  .hero-beeld { aspect-ratio: 4 / 3; }
  .raster-4 { grid-template-columns: 1fr 1fr; }
  .tegel:nth-child(3) { border-left: 0; }
  .tegel:nth-child(n+3) { border-top: 1px solid var(--grijs-200); }
  .sectie-kop-rij { flex-direction: column; align-items: start; }
}
@media (max-width: 560px) {
  .raster-4 { grid-template-columns: 1fr; }
  .tegel + .tegel { border-left: 0; border-top: 1px solid var(--grijs-200); }
  .tegel h3 { margin-top: 10px; }
  .hero-feiten li + li { margin-left: 14px; padding-left: 14px; }
  .knop-klein { padding: 9px 14px; }
  .merk { font-size: 15px; }
  .pagina { width: 76vw; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }