/* vdrslot.nl v2 - één stylesheet, geen framework */

:root {
  --grond: #01161e;
  --vlak: #072634;
  --vlak-op: #0b3444;
  --tekst: #eef4f6;
  --gedempt: #8ba3ad;
  --accent: #7fd1de;
  --lijn: rgba(255, 255, 255, .1);
  --breed: 1140px;
  --rond: 10px;
  --overgang: .25s cubic-bezier(.2, .6, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--grond);
  color: var(--tekst);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, svg { max-width: 100%; display: block; }
img { height: auto; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .4em; font-weight: 600; }
h1 { font-size: clamp(32px, 5.5vw, 54px); }
h2 { font-size: clamp(25px, 3.6vw, 36px); }
h3 { font-size: 19px; }
p { margin: 0 0 1em; }

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

/* ---------------------------------------------------------------- kop */

.kop {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 14px max(20px, 5vw);
  background: rgba(1, 22, 30, .82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--lijn);
}
.kop__merk { display: block; }
.kop__logo { width: 132px; height: auto; }
.kop__nav { display: flex; gap: clamp(14px, 3vw, 28px); font-size: 15px; }
.kop__nav a { color: var(--tekst); opacity: .82; }
.kop__nav a:hover { opacity: 1; color: var(--accent); text-decoration: none; }

/* ---------------------------------------------------------------- hero */

.hero {
  max-width: var(--breed); margin: 0 auto;
  padding: clamp(40px, 8vw, 90px) max(20px, 5vw) clamp(30px, 6vw, 60px);
  display: grid; gap: clamp(28px, 5vw, 60px); align-items: center;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) { .hero { grid-template-columns: 1.15fr .85fr; } }

.hero__aanhef { color: var(--gedempt); margin: 0 0 4px; font-size: 16px; }
.hero__naam { margin: 0 0 10px; }
.hero__vak {
  color: var(--accent); text-transform: uppercase; letter-spacing: .16em;
  font-size: 13px; margin: 0 0 22px;
}
.hero__intro { font-size: clamp(17px, 2vw, 19px); color: #d6e4e9; max-width: 48ch; }
.hero__knoppen { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero__beeld picture { border-radius: var(--rond); overflow: hidden; display: block; }
.hero__beeld img { width: 100%; border-radius: var(--rond); }

.knop {
  display: inline-block; padding: 11px 22px; border-radius: 999px;
  background: var(--accent); color: #012029; font-weight: 600; font-size: 15px;
  border: 1px solid var(--accent); cursor: pointer; transition: var(--overgang);
}
.knop:hover { text-decoration: none; transform: translateY(-1px); filter: brightness(1.08); }
.knop--leeg { background: transparent; color: var(--tekst); border-color: var(--lijn); }
.knop--leeg:hover { border-color: var(--accent); color: var(--accent); }

/* ---------------------------------------------------------------- secties */

.sectie {
  max-width: var(--breed); margin: 0 auto;
  padding: clamp(46px, 7vw, 80px) max(20px, 5vw);
  border-top: 1px solid var(--lijn);
}
.sectie--smal > *:not(.sectie__kop):not(.cv) { max-width: 68ch; }
.sectie__kop { display: flex; align-items: baseline; gap: 14px; margin-bottom: 26px; flex-wrap: wrap; }
.sectie__kop h2 { margin: 0; }
.sectie__bij { color: var(--gedempt); font-size: 15px; margin: 0; }

/* ---------------------------------------------------------------- filter */

.filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.filter__knop {
  font: inherit; font-size: 14px; cursor: pointer;
  padding: 7px 15px; border-radius: 999px;
  background: transparent; color: var(--gedempt);
  border: 1px solid var(--lijn); transition: var(--overgang);
}
.filter__knop:hover { color: var(--tekst); border-color: var(--accent); }
.filter__knop.is-actief { background: var(--vlak-op); color: var(--tekst); border-color: var(--accent); }
.filter__aantal { opacity: .55; font-size: 12px; margin-left: 3px; }

/* ---------------------------------------------------------------- raster */

.raster {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: clamp(16px, 2.4vw, 26px);
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
}
.kaart { margin: 0; }
.kaart[hidden] { display: none; }
.kaart__link { display: block; color: inherit; }
.kaart__link:hover { text-decoration: none; }

.kaart__beeld {
  position: relative; display: block; overflow: hidden;
  border-radius: var(--rond); background: var(--vlak);
  aspect-ratio: 3 / 2;
}
/* picture is de wrapper om img; zonder eigen hoogte kan object-fit niets doen */
.kaart__beeld picture { display: block; width: 100%; height: 100%; }
.kaart__beeld img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s cubic-bezier(.2,.6,.3,1); }
.kaart__link:hover .kaart__beeld img { transform: scale(1.045); }

.kaart__video {
  position: absolute; right: 12px; bottom: 12px; width: 34px; height: 34px;
  border-radius: 50%; background: rgba(1, 22, 30, .78); border: 1px solid var(--lijn);
}
.kaart__video::after {
  content: ""; position: absolute; left: 13px; top: 10px;
  border-left: 11px solid var(--tekst);
  border-top: 7px solid transparent; border-bottom: 7px solid transparent;
}

.kaart__tekst { display: block; padding: 12px 2px 0; }
.kaart__titel { display: block; font-weight: 600; font-size: 17px; }
.kaart__link:hover .kaart__titel { color: var(--accent); }
.kaart__meta { display: block; color: var(--gedempt); font-size: 14px; margin-top: 3px; }
.raster__leeg { color: var(--gedempt); }

/* ---------------------------------------------------------------- cv */

.cv { display: grid; gap: clamp(24px, 4vw, 48px); grid-template-columns: 1fr; }
@media (min-width: 720px) { .cv { grid-template-columns: 1fr 1fr; } }
.cv__kolom h3 { color: var(--accent); font-size: 14px; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 16px; }
.cv__regel { padding: 14px 0; border-top: 1px solid var(--lijn); }
.cv__rol { margin: 0; font-weight: 600; }
.cv__waar { margin: 0; color: #cadde3; font-size: 15px; }
.cv__periode { margin: 2px 0 0; color: var(--gedempt); font-size: 14px; }

/* ---------------------------------------------------------------- formulier */

.contact__intro { color: #d6e4e9; }
.formulier { margin-top: 20px; }
.formulier__val { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.veld { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; max-width: 520px; }
.veld label { font-size: 14px; color: var(--gedempt); }
.veld input, .veld textarea {
  font: inherit; font-size: 16px; color: var(--tekst);
  background: var(--vlak); border: 1px solid var(--lijn); border-radius: var(--rond);
  padding: 11px 13px; width: 100%; transition: var(--overgang);
}
.veld input:focus, .veld textarea:focus { border-color: var(--accent); outline: none; background: var(--vlak-op); }
.veld textarea { resize: vertical; min-height: 120px; }

.melding { border-radius: var(--rond); padding: 14px 16px; margin: 18px 0; max-width: 520px; }
.melding--goed { background: rgba(127, 209, 222, .12); border: 1px solid var(--accent); }
.melding--fout { background: rgba(255, 138, 128, .1); border: 1px solid #ff8a80; }
.melding ul { margin: 6px 0 0; padding-left: 20px; }

/* ---------------------------------------------------------------- project */

.project { max-width: 960px; margin: 0 auto; padding: clamp(30px, 5vw, 56px) max(20px, 5vw) 0; }
.project__terug { font-size: 14px; color: var(--gedempt); margin: 0 0 18px; }
.project__kop h1 { margin-bottom: 14px; }
.project__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 28px; }
.label {
  font-size: 12px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--lijn); border-radius: 999px; padding: 4px 11px;
}
.project__datum { color: var(--gedempt); font-size: 14px; }

.project__hoofdbeeld { border-radius: var(--rond); overflow: hidden; margin-bottom: clamp(26px, 4vw, 44px); }
.project__hoofdbeeld img { width: 100%; }

.project__inhoud { font-size: 17px; }
.project__inhoud > p { max-width: 68ch; color: #dce9ed; }
.project__inhoud h2 { margin-top: 1.6em; font-size: clamp(21px, 2.6vw, 26px); }
.project__lijst { max-width: 68ch; color: #dce9ed; padding-left: 20px; }
.project__lijst li { margin-bottom: 6px; }
.project__beeld { margin: clamp(24px, 4vw, 40px) 0; }
.project__beeld img { width: 100%; border-radius: var(--rond); }

.galerij {
  display: grid; gap: clamp(12px, 2vw, 20px); margin: clamp(24px, 4vw, 40px) 0;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
}
.galerij__item { margin: 0; }
.galerij__item img { width: 100%; border-radius: var(--rond); }

/* video zonder YouTube te laden */
.video {
  position: relative; margin: clamp(24px, 4vw, 40px) 0;
  border-radius: var(--rond); overflow: hidden; background: #000;
  aspect-ratio: 16 / 9;
}
.video picture { display: block; width: 100%; height: 100%; }
.video img, .video iframe { width: 100%; height: 100%; object-fit: cover; border: 0; display: block; }
.video__knop {
  position: absolute; inset: 0; width: 100%; height: 100%;
  display: grid; place-items: center; cursor: pointer;
  background: rgba(1, 22, 30, .22); border: 0; transition: var(--overgang);
}
.video__knop:hover { background: rgba(1, 22, 30, .05); }
.video__knop svg { width: 72px; height: auto; }
.video__vlak { fill: #212121; fill-opacity: .82; transition: var(--overgang); }
.video__knop:hover .video__vlak { fill: #f00; fill-opacity: 1; }
.video__pijl { fill: #fff; }
.video__link { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); }

.project__buren {
  display: grid; gap: 14px; grid-template-columns: 1fr;
  margin: clamp(40px, 6vw, 70px) 0 0; padding-top: 26px; border-top: 1px solid var(--lijn);
}
@media (min-width: 680px) { .project__buren { grid-template-columns: 1fr 1fr; } }
.buur {
  display: block; padding: 16px 18px; border-radius: var(--rond);
  background: var(--vlak); color: var(--tekst); transition: var(--overgang);
}
.buur:hover { background: var(--vlak-op); text-decoration: none; }
.buur--volgende { text-align: right; }
.buur__label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .12em; color: var(--gedempt); }
.buur__titel { display: block; margin-top: 4px; font-weight: 600; }

/* ---------------------------------------------------------------- voet */

.voet { border-top: 1px solid var(--lijn); margin-top: clamp(50px, 8vw, 90px); }
.voet__binnen {
  max-width: var(--breed); margin: 0 auto;
  padding: clamp(30px, 5vw, 50px) max(20px, 5vw);
  color: var(--gedempt); font-size: 15px;
}
.voet__naam { color: var(--tekst); font-weight: 600; margin-bottom: 4px; }
.voet__klein { font-size: 13px; margin-top: 14px; }