/* stalenkozijn.nl — huisstijl
   Kleur: staal + oxide-oranje, geïnspireerd op het materiaal zelf.
   Type: Barlow Condensed (koppen) + IBM Plex Sans (body) + IBM Plex Mono (labels/meta). */

:root{
  --ink:#191c1e;
  --ink-soft:#565d61;
  --ink-faint:#8b9195;
  --bg:#f4f2ee;
  --surface:#ffffff;
  --surface-2:#eae6df;
  --line:#dcd7cd;
  --steel:#33505f;
  --steel-soft:#dfe7ea;
  --accent:#c1501f;
  --accent-ink:#fff8f4;
  --accent-soft:#f2ddce;
  --shadow: 0 1px 2px rgba(25,28,30,.06), 0 10px 26px -14px rgba(25,28,30,.24);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit;}
.container{max-width:1120px; margin:0 auto; padding:0 24px;}

h1,h2,h3,h4{
  font-family:"Barlow Condensed", ui-sans-serif, sans-serif;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.05;
  text-wrap:balance;
  margin:0 0 .4em;
  color:var(--ink);
}
h1{font-size:clamp(36px,5.5vw,58px);}
h2{font-size:clamp(26px,3.6vw,36px);}
h3{font-size:20px; font-weight:600;}
p{margin:0 0 14px; color:var(--ink-soft); max-width:70ch;}
.lede{font-size:18px; color:var(--ink-soft); max-width:56ch;}

.eyebrow{
  font-family:"IBM Plex Mono", ui-monospace, monospace;
  font-size:12px; letter-spacing:.09em; text-transform:uppercase;
  color:var(--steel); display:flex; align-items:center; gap:9px; margin-bottom:12px;
}
.eyebrow::before{content:""; width:20px; height:2px; background:var(--accent);}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:"IBM Plex Sans"; font-weight:600; font-size:15px;
  padding:12px 22px; border-radius:6px; text-decoration:none;
  border:1.5px solid transparent; cursor:pointer; transition:transform .12s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-accent{background:var(--accent); color:var(--accent-ink);}
.btn-accent:hover{background:#a8461c;}
.btn-outline{background:transparent; color:var(--ink); border-color:var(--line);}
.btn-outline:hover{border-color:var(--steel); color:var(--steel);}
.btn-ghost-light{background:transparent; color:#fff; border-color:rgba(255,255,255,.4);}
.btn-ghost-light:hover{border-color:#fff;}

/* Header / nav */
header.site{
  position:sticky; top:0; z-index:40;
  background:rgba(244,242,238,.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-row{display:flex; align-items:center; justify-content:space-between; height:76px; gap:24px;}
.logo{
  display:flex; align-items:center; gap:9px;
  font-family:"Barlow Condensed"; font-weight:700; font-size:23px;
  text-decoration:none; color:var(--ink); white-space:nowrap;
}
.logo .mark{width:26px; height:26px; flex-shrink:0;}
.logo .dot{color:var(--accent);}
nav.primary{display:flex; align-items:center; gap:6px; flex:1; justify-content:center;}
nav.primary > a{
  font-size:14.5px; font-weight:500; text-decoration:none; color:var(--ink-soft);
  padding:10px 14px; border-radius:6px; transition:color .15s ease, background .15s ease;
}
nav.primary > a:hover{color:var(--ink); background:var(--surface-2);}

details.mega{position:relative;}
details.mega > summary{
  list-style:none; cursor:pointer; font-size:14.5px; font-weight:500; color:var(--ink-soft);
  padding:10px 14px; border-radius:6px; display:flex; align-items:center; gap:6px;
}
details.mega > summary::-webkit-details-marker{display:none;}
details.mega > summary:hover{color:var(--ink); background:var(--surface-2);}
details.mega > summary::after{content:"▾"; font-size:10px; margin-top:1px;}
details.mega[open] > summary{color:var(--ink); background:var(--surface-2);}
.mega-panel{
  position:absolute; top:calc(100% + 8px); left:50%; transform:translateX(-50%);
  background:var(--surface); border:1px solid var(--line); border-radius:10px; box-shadow:var(--shadow);
  padding:14px; display:grid; grid-template-columns:1fr 1fr; gap:2px; width:520px; z-index:50;
}
.mega-panel a{
  display:flex; flex-direction:column; gap:2px; padding:10px 12px; border-radius:7px;
  text-decoration:none; color:var(--ink);
}
.mega-panel a:hover{background:var(--surface-2);}
.mega-panel a b{font-size:14.5px; font-weight:600;}
.mega-panel a span{font-size:12.5px; color:var(--ink-faint);}
.nav-cta{display:flex; align-items:center; gap:10px;}

.nav-toggle{display:none; background:none; border:none; cursor:pointer; padding:8px;}
.nav-toggle span{display:block; width:22px; height:2px; background:var(--ink); margin:5px 0;}

/* Hero */
.hero{padding:64px 0 56px; border-bottom:1px solid var(--line);}
.hero-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:48px; align-items:center;}
.hero-meta{display:flex; flex-wrap:wrap; gap:18px; margin-top:26px; font-family:"IBM Plex Mono"; font-size:12.5px; color:var(--ink-faint);}
.hero-meta b{color:var(--steel); font-weight:500;}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:28px;}
.hero-media{
  position:relative; border-radius:14px; overflow:hidden; box-shadow:var(--shadow);
  aspect-ratio:4/5; background:var(--surface-2);
}
.hero-media img{width:100%; height:100%; object-fit:cover;}

/* Sections */
section{padding:60px 0;}
section.tight{padding:40px 0;}
.section-head{max-width:640px; margin-bottom:32px;}
.band{background:var(--surface);}
.band-steel{background:var(--steel); color:#fff;}
.band-steel h2, .band-steel .eyebrow{color:#fff;}
.band-steel p{color:rgba(255,255,255,.78);}
.band-steel .eyebrow::before{background:var(--accent);}

/* Category grid (home) */
.cat-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px;}
.cat-card{
  position:relative; border-radius:12px; overflow:hidden; text-decoration:none;
  aspect-ratio:4/3; box-shadow:var(--shadow); background:var(--surface-2);
}
.cat-card img{width:100%; height:100%; object-fit:cover; transition:transform .4s ease;}
.cat-card:hover img{transform:scale(1.05);}
.cat-card .overlay{
  position:absolute; inset:0; background:linear-gradient(180deg, rgba(25,28,30,0) 40%, rgba(25,28,30,.82) 100%);
  display:flex; align-items:flex-end; padding:18px;
}
.cat-card .overlay span{color:#fff; font-family:"Barlow Condensed"; font-weight:600; font-size:21px;}

/* Feature list */
.feature-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px;}
.feature{
  display:flex; gap:12px; padding:16px 18px; border:1px solid var(--line); border-radius:10px; background:var(--surface);
}
.feature .num{
  font-family:"IBM Plex Mono"; font-size:12px; color:var(--accent); font-weight:500; flex-shrink:0; padding-top:2px;
}
.feature b{display:block; font-size:15px; margin-bottom:2px; color:var(--ink);}
.feature span{font-size:13.5px; color:var(--ink-soft);}

/* Gallery */
.gallery{display:grid; grid-template-columns:repeat(3,1fr); gap:12px;}
.gallery img{border-radius:10px; aspect-ratio:4/5; object-fit:cover; box-shadow:var(--shadow);}

/* USP strip */
.usp-strip{display:flex; flex-wrap:wrap; gap:10px;}
.usp-pill{
  display:flex; align-items:center; gap:8px; padding:9px 16px; border-radius:999px;
  background:var(--steel-soft); color:var(--steel); font-size:13.5px; font-weight:500;
}

/* FAQ */
.faq-item{border-top:1px solid var(--line); padding:18px 0;}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center; font-weight:600; font-size:16px; color:var(--ink);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+"; font-family:"IBM Plex Mono"; font-size:20px; color:var(--accent); flex-shrink:0; margin-left:14px;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin-top:12px; margin-bottom:0;}

/* Regio strip */
.regio-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px;}
.regio-card{border:1px solid var(--line); border-radius:12px; padding:22px; background:var(--surface);}
.regio-card .eyebrow{margin-bottom:8px;}

/* Configurator */
.configurator{
  border:1px solid var(--line); border-radius:14px; background:var(--surface);
  box-shadow:var(--shadow); padding:28px; margin-top:8px;
}
.config-steps{display:flex; gap:8px; margin-bottom:24px; flex-wrap:wrap;}
.config-step{
  font-family:"IBM Plex Mono"; font-size:11.5px; padding:6px 12px; border-radius:999px;
  background:var(--surface-2); color:var(--ink-faint); display:flex; align-items:center; gap:6px;
}
.config-step.active{background:var(--steel); color:#fff;}
.config-step.done{background:var(--steel-soft); color:var(--steel);}
.config-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(150px,1fr)); gap:10px;}
.config-opt{
  border:1.5px solid var(--line); border-radius:8px; padding:14px; cursor:pointer; text-align:left;
  background:var(--bg); font-family:"IBM Plex Sans"; font-size:14px; font-weight:500; color:var(--ink);
  transition:border-color .15s ease, background .15s ease;
}
.config-opt:hover{border-color:var(--steel);}
.config-opt.selected{border-color:var(--accent); background:var(--accent-soft); color:var(--ink);}
.config-opt small{display:block; font-weight:400; color:var(--ink-faint); margin-top:3px;}
.config-summary{
  margin-top:22px; padding:16px 18px; border-radius:10px; background:var(--steel-soft);
  font-size:14px; color:var(--steel); display:flex; justify-content:space-between; align-items:center; gap:14px; flex-wrap:wrap;
}
.config-summary b{color:var(--ink);}
.config-nav{display:flex; justify-content:space-between; margin-top:22px;}

/* Forms */
form.offerte{display:grid; gap:16px; max-width:640px;}
.form-row{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
label{font-size:13px; font-weight:600; color:var(--ink); display:block; margin-bottom:6px;}
input, select, textarea{
  width:100%; padding:11px 13px; border:1.5px solid var(--line); border-radius:7px;
  font-family:"IBM Plex Sans"; font-size:14.5px; background:var(--surface); color:var(--ink);
}
input:focus, select:focus, textarea:focus{outline:2px solid var(--steel); outline-offset:1px; border-color:var(--steel);}
textarea{min-height:110px; resize:vertical;}
.form-note{font-size:12.5px; color:var(--ink-faint);}

/* Footer */
footer.site{background:var(--ink); color:rgba(244,242,238,.72); padding:56px 0 26px; margin-top:40px;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; padding-bottom:36px; border-bottom:1px solid rgba(244,242,238,.14);}
footer.site h4{color:#fff; font-family:"IBM Plex Mono"; font-size:12px; letter-spacing:.08em; text-transform:uppercase; font-weight:500; margin-bottom:14px;}
footer.site a{display:block; text-decoration:none; color:rgba(244,242,238,.72); font-size:14px; padding:4px 0;}
footer.site a:hover{color:#fff;}
.footer-bottom{display:flex; justify-content:space-between; padding-top:22px; font-family:"IBM Plex Mono"; font-size:11.5px; color:rgba(244,242,238,.5); flex-wrap:wrap; gap:10px;}

/* Skip link / focus */
a:focus-visible, button:focus-visible, .config-opt:focus-visible{outline:2px solid var(--accent); outline-offset:2px;}

/* Breadcrumb */
.crumb{font-family:"IBM Plex Mono"; font-size:12px; color:var(--ink-faint); padding:18px 0 0;}
.crumb a{text-decoration:none; color:var(--ink-faint);}
.crumb a:hover{color:var(--steel);}

@media (max-width: 880px){
  nav.primary, .nav-cta .btn-outline{display:none;}
  .nav-toggle{display:block;}
  .hero-grid{grid-template-columns:1fr;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .feature-grid, .form-row, .regio-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr; gap:28px;}
}
@media (max-width: 520px){
  .cat-grid, .gallery{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .cat-card img{transition:none;}
}