/* De website van VSO Installatietechniek.
   Eén stylesheet, geen framework: op shared hosting is elk extra bestand een
   extra verzoek, en er staat hier niets in dat een framework nodig heeft. */

:root{
  --geel:#FBB82B;
  --geel-donker:#E0A214;
  --zwart:#16191c;
  --zwart-zacht:#22272b;
  --inkt:#1a1d20;
  --grijs:#5d666d;
  --lijn:#e2e6e9;
  --vlak:#f5f6f8;
  --wit:#ffffff;
  --straal:10px;
  --breed:1120px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--wit);color:var(--inkt);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
img{max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.1rem);font-weight:800}
h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800}
h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 1em}
.binnen{max-width:var(--breed);margin:0 auto;padding:0 20px}

.overslaan{
  position:absolute;left:-9999px;top:0;background:var(--geel);color:var(--zwart);
  padding:10px 16px;z-index:100;border-radius:0 0 var(--straal) 0;
}
.overslaan:focus{left:0}

/* ------------------------------------------------------------------ kop */
.site-kop{background:var(--zwart);position:sticky;top:0;z-index:50}
.site-kop .binnen{display:flex;align-items:center;gap:20px;min-height:72px;flex-wrap:wrap}
.logo{display:block;flex:0 0 auto}
.logo img{width:196px;height:auto;display:block}
.site-kop nav{margin-left:auto;display:flex;align-items:center;gap:22px}
.site-kop nav a{
  color:#d8dde1;text-decoration:none;font-size:.94rem;font-weight:500;padding:6px 0;
  border-bottom:2px solid transparent;
}
.site-kop nav a:hover{color:#fff}
.site-kop nav a[aria-current=page]{color:#fff;border-bottom-color:var(--geel)}

.knop{
  display:inline-block;background:var(--geel);color:var(--zwart)!important;text-decoration:none;
  font-weight:700;padding:10px 18px;border-radius:var(--straal);border:0;cursor:pointer;
  font-size:.94rem;line-height:1.3;
}
.knop:hover{background:var(--geel-donker)}
.knop.groot{padding:14px 26px;font-size:1.05rem}
.knop.rand{background:transparent;color:#fff!important;border:1.5px solid rgba(255,255,255,.35)}
.knop.rand:hover{border-color:var(--geel);background:transparent}
.site-kop nav a.knop{border-bottom:0;color:var(--zwart)!important}

.menuknop{
  display:none;margin-left:auto;background:transparent;border:0;color:#fff;cursor:pointer;
  align-items:center;gap:10px;padding:8px 0;
}
.menuknop .streepjes{display:flex;flex-direction:column;gap:5px}
.menuknop .streepjes span{display:block;width:24px;height:2px;background:#fff;border-radius:1px}
.menuknop em{font-style:normal;font-size:.92rem;font-weight:600}

/* ----------------------------------------------------------------- hero */
.hero{background:var(--zwart);color:#fff;padding:64px 0 76px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(251,184,43,.16),transparent 70%);
}
.hero .binnen{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{margin-bottom:.35em}
.hero .lead{font-size:1.15rem;color:#c9d0d5;max-width:32em}
.hero .acties{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero .punten{list-style:none;margin:30px 0 0;padding:0;display:flex;gap:22px;flex-wrap:wrap;
  color:#c9d0d5;font-size:.92rem}
.hero .punten li{display:flex;align-items:center;gap:7px}
.hero .punten li::before{content:"";width:16px;height:16px;border-radius:50%;background:var(--geel);
  flex:0 0 auto;box-shadow:inset 0 0 0 4px var(--zwart)}

.kastbeeld{
  background:#fff;border-radius:16px;padding:18px;box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.kastbeeld img{display:block;width:100%;border-radius:8px}
.kastbeeld figcaption{
  margin-top:10px;font-size:.8rem;color:var(--grijs);text-align:center;
}

/* --------------------------------------------------------------- blokken */
.blok{padding:64px 0}
.blok.vlak{background:var(--vlak)}
.blok .kop{max-width:42em;margin-bottom:36px}
.blok .kop p{color:var(--grijs);font-size:1.05rem;margin-bottom:0}

.merkbalk{background:var(--zwart-zacht);color:#c9d0d5;padding:18px 0;font-size:.92rem}
.merkbalk .binnen{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:center;text-align:center}
.merkbalk strong{color:var(--geel)}

.raster{display:grid;gap:22px}
.raster.drie{grid-template-columns:repeat(3,1fr)}
.raster.twee{grid-template-columns:repeat(2,1fr)}
.raster.vier{grid-template-columns:repeat(4,1fr)}

.kaart{
  background:var(--wit);border:1px solid var(--lijn);border-radius:var(--straal);padding:24px;
}
.blok.vlak .kaart{border-color:transparent;box-shadow:0 1px 2px rgba(20,25,30,.06)}
.kaart h3{margin-bottom:.4em}
.kaart p:last-child{margin-bottom:0}
.kaart .cijfer{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:50%;background:var(--geel);color:var(--zwart);font-weight:800;margin-bottom:14px;
}

.prijskaart{border:2px solid var(--geel);border-radius:var(--straal);padding:26px;background:#fffdf7}
.prijskaart .bedrag{font-size:2.1rem;font-weight:800;letter-spacing:-.03em;display:block;margin-bottom:.1em}
.prijskaart .sub{color:var(--grijs);font-size:.9rem}

.lijstje{list-style:none;margin:0;padding:0}
.lijstje li{position:relative;padding:7px 0 7px 30px;border-bottom:1px solid var(--lijn)}
.lijstje li:last-child{border-bottom:0}
.lijstje li::before{
  content:"";position:absolute;left:4px;top:15px;width:11px;height:6px;
  border-left:2.5px solid var(--geel);border-bottom:2.5px solid var(--geel);transform:rotate(-45deg);
}
.lijstje.kruis li::before{
  border:0;left:6px;top:16px;width:11px;height:2.5px;background:#c8cdd2;transform:none;
}

details.vraag{border-bottom:1px solid var(--lijn);padding:4px 0}
details.vraag summary{
  cursor:pointer;font-weight:600;padding:14px 30px 14px 0;position:relative;list-style:none;
}
details.vraag summary::-webkit-details-marker{display:none}
details.vraag summary::after{
  content:"";position:absolute;right:6px;top:20px;width:9px;height:9px;
  border-right:2px solid var(--geel);border-bottom:2px solid var(--geel);transform:rotate(45deg);
  transition:transform .15s;
}
details.vraag[open] summary::after{transform:rotate(-135deg);top:24px}
details.vraag p{color:var(--grijs);margin:0 0 14px}

/* ---------------------------------------------------------------- oproep */
.oproep{background:var(--geel);color:var(--zwart);padding:56px 0;text-align:center}
.oproep h2{margin-bottom:.3em}
.oproep p{max-width:34em;margin:0 auto 24px;font-size:1.05rem}
.oproep .knop{background:var(--zwart);color:#fff!important}
.oproep .knop:hover{background:#000}

/* ----------------------------------------------------------------- voet */
.site-voet{background:var(--zwart);color:#aab2b8;padding:52px 0 0;font-size:.92rem}
.site-voet .binnen{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.site-voet h3{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em}
.site-voet a{color:#d8dde1;text-decoration:none}
.site-voet a:hover{color:var(--geel)}
.voetlogo{width:168px;margin-bottom:14px}
.site-voet .klein{
  grid-template-columns:1fr;margin-top:36px;border-top:1px solid rgba(255,255,255,.1);padding-top:18px;
}
.site-voet .klein p{font-size:.84rem;color:#7d868d;margin:0 0 18px}

/* --------------------------------------------------------------- pagina */
.paginakop{background:var(--vlak);padding:48px 0;border-bottom:1px solid var(--lijn)}
.paginakop p{color:var(--grijs);font-size:1.05rem;max-width:40em;margin-bottom:0}
.tekst{max-width:44em}
.tekst h2{margin-top:1.6em}
.tekst h3{margin-top:1.4em}

/* -------------------------------------------------------------- formulier */
.formulier{display:grid;gap:16px;max-width:36em}
.formulier label{display:block;font-weight:600;font-size:.92rem;margin-bottom:5px}
.formulier .hint{font-weight:400;color:var(--grijs);font-size:.84rem}
.formulier input,.formulier textarea,.formulier select{
  width:100%;padding:11px 13px;border:1px solid var(--lijn);border-radius:8px;
  font:inherit;background:var(--wit);color:var(--inkt);
}
.formulier input:focus,.formulier textarea:focus{outline:2px solid var(--geel);outline-offset:1px;border-color:transparent}
.formulier .paar{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.melding{padding:14px 16px;border-radius:8px;margin-bottom:22px}
.melding.goed{background:#e9f6ec;color:#1d6b32}
.melding.fout{background:#fdecec;color:#9d2c2c}
.melding ul{margin:6px 0 0;padding-left:18px}
.honing{position:absolute;left:-9999px}

@media (max-width:900px){
  .hero .binnen{grid-template-columns:1fr;gap:32px}
  .raster.drie,.raster.vier{grid-template-columns:repeat(2,1fr)}
  .site-voet .binnen{grid-template-columns:1fr 1fr}
}
@media (max-width:700px){
  .menuknop{display:flex}
  .site-kop nav{
    display:none;margin:0 -20px;padding:8px 20px 18px;width:calc(100% + 40px);
    flex-direction:column;align-items:stretch;gap:0;
  }
  body.menu-open .site-kop nav{display:flex}
  .site-kop nav a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.08)}
  .site-kop nav a.knop{margin-top:12px;text-align:center}
  .raster.drie,.raster.twee,.raster.vier{grid-template-columns:1fr}
  .formulier .paar{grid-template-columns:1fr}
  .site-voet .binnen{grid-template-columns:1fr}
  .blok{padding:48px 0}
}