/* Gedeelde basis voor de drie richtingen van Dienstverlening Sjoerdjan
   Heeringa: reset, merkwaarden, typeschaal, ritme, beweging, knoppen,
   onthulling, kop, menu, placeholders, beeldlabels, FAQ, formulier,
   dienstpagina en voet. Letters en uiterlijk per richting staan in
   seizoen.css, terrein.css en machine.css. Zie brief/01-merk.md. */

:root{
  /* Merk: gemeten op het logo (S.Heeringa Groen-Infra-Dienstverlening), brief/01. */
  --logogroen:#01752B; /* het groen van "S.Heeringa" en de trekker in het logo */
  --bosgroen:#123A22;  /* logogroen, donker: dominante vlakkleur */
  --mosgroen:#5E9770;  /* lichte tint uit het logo */
  --geel:#7FD08F;      /* het accent: logogroen opgelicht, leesbaar op donker en als knop met inkt */
  --geel-diep:#01752B; /* accent als tekst op licht */
  --papier:#F3F2EC;--zand:#E4E6DC;--inkt:#2E2F33;--inkt-zacht:#55585C;--wit:#FFFFFF; /* inkt: het antraciet van het logo */
  --nacht:#0F1712;--nacht-2:#18241C;

  /* Betekenis-tokens, licht. Componenten gebruiken alleen deze. */
  --bg:var(--papier);--surface:var(--wit);--text:var(--inkt);--text-soft:var(--inkt-zacht);
  --line:rgba(22,32,26,.14);--line-strong:rgba(22,32,26,.34);
  --accent:var(--geel);--accent-text:var(--logogroen);--on-accent:var(--inkt);--focus:var(--bosgroen);

  --shell:1280px;--gutter:clamp(18px,4vw,48px);--section-y:clamp(72px,9vw,140px);
  --f-display:Georgia,serif;--f-body:"Segoe UI",sans-serif;
  --t-mega:clamp(2.8rem,1rem + 7.4vw,8rem);--t-h1:clamp(2.4rem,1.2rem + 4vw,5rem);--t-h2:clamp(2rem,1.2rem + 2.6vw,3.6rem);
  --t-h3:clamp(1.3rem,1.1rem + .7vw,1.75rem);--t-lead:clamp(1.06rem,1rem + .35vw,1.25rem);--t-small:.9rem;--t-micro:.78rem;
  --ease:cubic-bezier(.22,1,.36,1);--dur:700ms;
}
.tone-dark{
  --bg:var(--bosgroen);--surface:#2A4A38;--text:#F1EFE6;--text-soft:#C5CEC4;
  --line:rgba(255,255,255,.16);--line-strong:rgba(255,255,255,.38);
  --accent-text:var(--geel);--focus:var(--geel);
  background:var(--bg);color:var(--text);color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--bg);color:var(--text);font:400 1.03rem/1.65 var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:clip}
img,picture,video,svg{max-width:100%;display:block}
img{height:auto}
h1,h2,h3{font-family:var(--f-display);font-weight:400;letter-spacing:-.015em;line-height:1.02;margin:0 0 .45em;text-wrap:balance}
h1{font-size:var(--t-h1)}h2{font-size:var(--t-h2)}h3{font-size:var(--t-h3);line-height:1.15}
p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--inkt);color:var(--geel);padding:10px 14px;font-weight:600}
.skip:focus{top:12px}
.shell{max-width:var(--shell);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding:var(--section-y) 0}
.lead{font-size:var(--t-lead);color:var(--text-soft);max-width:54ch;text-wrap:pretty}
.label{font:600 var(--t-micro)/1 var(--f-body);letter-spacing:.16em;text-transform:uppercase;color:var(--accent-text);margin-bottom:18px;display:block}

/* Knoppen */
.knop{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 26px;font:600 .98rem/1 var(--f-body);text-decoration:none;white-space:nowrap;border-radius:var(--knop-radius,0);transition:background-color .2s,color .2s,box-shadow .2s,transform .2s var(--ease)}
.knop:hover{transform:translateY(-2px)}
.knop-geel{background:var(--geel);color:var(--inkt)}
.knop-geel:hover{background:#A3DEAE}
.knop-groen{background:var(--bosgroen);color:#fff}
.knop-groen:hover{background:#2A4A38}
.knop-rand{box-shadow:inset 0 0 0 1.5px var(--line-strong);color:var(--text)}
.knop-rand:hover{box-shadow:inset 0 0 0 1.5px var(--text)}
.knop-klein{min-height:44px;padding:0 18px;font-size:.92rem}
.knop svg{width:18px;height:18px;flex:none}
.acties{display:flex;flex-wrap:wrap;gap:12px}

/* Onthulling: data-anim="up|links". Zonder JavaScript staat alles er. */
html.js [data-anim]{opacity:0;transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);transition-delay:var(--d,0ms)}
html.js [data-anim="up"]{transform:translateY(28px)}
html.js [data-anim="links"]{transform:translateX(-28px)}
html.js [data-anim].is-in{opacity:1;transform:none}

/* Placeholders: klein, gestreept, nooit in hero of kop. */
.ph{background:repeating-linear-gradient(-45deg,rgba(127,208,143,.35) 0 6px,rgba(127,208,143,.12) 6px 12px);outline:1px dashed currentColor;outline-offset:1px;padding:0 .3em;border-radius:2px;font-size:.92em}
.tone-dark .ph{outline-color:rgba(255,255,255,.5)}
/* Voorbeeldbeeld (Pexels): altijd gelabeld. */

/* Richtingbalk: dit is een ontwerprichting. */
.richtingbalk{font:500 12px/1.3 var(--f-body);background:var(--nacht);color:#F1EFE6;padding:8px 16px;display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap;position:relative;z-index:60}
.richtingbalk a{color:var(--geel);display:inline-flex;align-items:center;min-height:24px}

/* Kop: structuur gedeeld, kleur per richting. */
.kop{position:sticky;top:0;z-index:50;transition:background-color .3s,box-shadow .3s}
.kop-binnen{display:flex;align-items:center;gap:24px;min-height:76px}
.merk{display:flex;flex-direction:column;text-decoration:none;margin-right:auto;line-height:1.05}
/* Het echte logo, op een wit plaatje zodat het op licht en donker werkt. */
.merk img{height:48px;width:auto;background:#fff;padding:5px 9px;border-radius:var(--knop-radius,0)}
.r-seizoen .merk img{border-radius:6px}
/* Certificaten als keurmerkrij */
.keurrij{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.keurrij li{font:600 var(--t-micro)/1 var(--f-body);letter-spacing:.08em;text-transform:uppercase;padding:9px 12px;border:1px solid var(--line-strong);border-radius:var(--knop-radius,0);color:var(--text)}
.nav{display:flex;gap:26px;font-size:.95rem}
.nav a{text-decoration:none;padding:12px 0;position:relative}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav a:hover::after{transform:scaleX(1)}
.menuknop{display:none;width:48px;height:48px;align-items:center;justify-content:center;flex-direction:column;gap:6px}
.menuknop i{display:block;width:24px;height:2px;background:currentColor;transition:transform .25s}
.menuknop[aria-expanded="true"] i:nth-child(1){transform:translateY(8px) rotate(45deg)}
.menuknop[aria-expanded="true"] i:nth-child(2){opacity:0}
.menuknop[aria-expanded="true"] i:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.menu{display:none}
@media (max-width:960px){
  .nav,.kop .knop-bel span{display:none}
  .menuknop{display:inline-flex}
  .menu.is-open{display:grid;gap:4px;padding:12px var(--gutter) 24px;background:var(--nacht);color:#F1EFE6}
  .menu a{padding:14px 0;text-decoration:none;font:400 1.6rem/1.1 var(--f-display);border-bottom:1px solid rgba(255,255,255,.12)}
  .menu .knop{margin-top:12px;font:600 1rem/1 var(--f-body);border:0}
}

/* FAQ als accordeon (details) */
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:22px 0;font:400 1.3rem/1.25 var(--f-display);display:flex;justify-content:space-between;gap:20px;align-items:center;min-height:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:300 1.8rem/1 var(--f-body);color:var(--accent-text);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>div{padding:0 0 24px;color:var(--text-soft);max-width:62ch}

/* Loopband, pauzeert bij hover. */
.loopband{overflow:hidden;white-space:nowrap}
.loopband-rij{display:inline-flex;gap:56px;padding-right:56px;animation:loop 46s linear infinite}
.loopband:hover .loopband-rij{animation-play-state:paused}
@keyframes loop{to{transform:translateX(-100%)}}

/* Formulier */
.formulier{display:grid;gap:16px;grid-template-columns:1fr 1fr}
.formulier label{display:grid;gap:6px;font-size:var(--t-small);font-weight:600}
.formulier .breed,.formulier button,.formulier .melding{grid-column:1/-1}
.formulier input,.formulier select,.formulier textarea{font:inherit;font-weight:400;padding:14px;border:1px solid var(--line-strong);background:var(--surface);color:var(--text);border-radius:var(--veld-radius,0);min-height:48px;width:100%}
.formulier textarea{min-height:120px;resize:vertical}
.formulier fieldset{grid-column:1/-1;border:0;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.formulier legend{font-size:var(--t-small);font-weight:600;margin-bottom:8px}
.formulier fieldset label{display:inline-flex;align-items:center;gap:8px;font-weight:500;padding:10px 14px;border:1px solid var(--line-strong);min-height:44px;cursor:pointer}
.formulier fieldset input{min-height:0;width:auto}
.melding{padding:14px 16px;background:rgba(127,208,143,.2);border-left:3px solid var(--geel)}

/* Dienstpagina: kruimel, in het kort, hoofdstukken met beeld, tussenband. */
.kruimel{font-size:var(--t-small);color:var(--text-soft);margin-bottom:22px}
.kruimel a{color:inherit}
.kort{border-top:2px solid var(--accent);padding-top:22px}
.kort dl{display:grid;gap:14px;margin-bottom:22px}
.kort dt{font:600 var(--t-micro)/1 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--text-soft);margin-bottom:6px}
.kort .knop{width:100%;margin-top:8px}
.kort .knop + .knop{margin-top:10px}
.hoofdstuk{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,80px);align-items:center;padding:clamp(40px,6vw,80px) 0}
.hoofdstuk:nth-child(even) .hoofdstuk-beeld{order:-1}
.hoofdstuk h2{font-size:clamp(1.8rem,1.2rem + 1.8vw,2.8rem)}
.hoofdstuk p{color:var(--text-soft);margin-bottom:14px}
.hoofdstuk ul{display:grid;gap:8px}
.hoofdstuk li{padding-left:22px;position:relative}
.hoofdstuk li::before{content:"";position:absolute;left:0;top:.7em;width:10px;height:2px;background:var(--accent)}
.hoofdstuk-beeld img{width:100%;aspect-ratio:4/3;object-fit:cover}
.ook{display:grid;gap:0;margin-top:40px}
.ook a{display:flex;justify-content:space-between;align-items:center;padding:22px 0;border-top:1px solid var(--line);text-decoration:none;font:400 1.4rem/1.2 var(--f-display);min-height:44px}
.ook a:last-child{border-bottom:1px solid var(--line)}
.pagina-kop{display:grid;grid-template-columns:1fr 1fr;min-height:min(78vh,720px);background:var(--bg)}
.pagina-kop-beeld{grid-column:2;grid-row:1;margin:0}
.pagina-kop-beeld img{width:100%;height:100%;object-fit:cover}
.pagina-kop-tekst{grid-column:1;grid-row:1;align-self:center;padding-top:56px;padding-bottom:56px;padding-right:var(--gutter);padding-left:max(var(--gutter),calc((100vw - var(--shell))/2 + var(--gutter)))}
.pagina-kop h1{font-size:clamp(2.4rem,1.2rem + 3.6vw,4.6rem)}
.pagina-kop .lead{margin-bottom:28px}
.dienst-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:clamp(32px,6vw,96px);align-items:start}
.dienst-grid .kort{position:sticky;top:110px}
.kort img{width:100%;aspect-ratio:4/3;object-fit:cover;margin-bottom:18px}
.tussenband{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;justify-content:space-between;padding:32px clamp(20px,4vw,44px);background:var(--bosgroen);color:#F1EFE6;margin:24px 0}
.tussenband strong{font:400 clamp(1.3rem,1rem + 1vw,1.9rem)/1.2 var(--f-display)}
.na-lijst{display:grid;counter-reset:c;margin-top:28px}
.na-lijst li{counter-increment:c;padding:20px 0 20px 60px;border-top:1px solid var(--line);position:relative;color:var(--text-soft)}
.na-lijst li::before{content:counter(c);position:absolute;left:0;top:14px;font:400 2.4rem/1 var(--f-display);color:var(--accent-text)}
.na-lijst strong{display:block;font:400 1.3rem/1.2 var(--f-display);color:var(--text);margin-bottom:4px}
@media (max-width:900px){
  .pagina-kop{grid-template-columns:1fr;min-height:0}
  .pagina-kop-beeld{grid-column:1;grid-row:2;aspect-ratio:4/3}
  .pagina-kop-tekst{grid-column:1;padding-left:var(--gutter)}
  .dienst-grid,.hoofdstuk{grid-template-columns:1fr}
  .dienst-grid .kort{position:static}
  .hoofdstuk:nth-child(even) .hoofdstuk-beeld{order:0}
  .formulier{grid-template-columns:1fr}
}

/* Voet */
.voet{font-size:var(--t-small)}
.voet-grid{display:grid;gap:32px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.voet h2{font:600 var(--t-micro)/1 var(--f-body);letter-spacing:.16em;text-transform:uppercase;margin-bottom:16px;color:var(--accent-text)}
.voet li{margin:4px 0}
.voet li a{display:inline-flex;align-items:center;min-height:32px}
.voet a{text-decoration:none}
.voet a:hover{text-decoration:underline}
.voet-onder{margin-top:40px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px 24px;opacity:.85;font-size:var(--t-micro)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
  html.js [data-anim]{opacity:1;transform:none}
}