/* ============================================================
   MAP.CSS  –  Projecten-pagina: filters + categorie-mappen
   ("map" = folder)
   ============================================================ */

.projects-page {
  /* 12-koloms grid (zie .grid-12 in style.css) */
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--grid-gap);
  padding: 50px var(--grid-margin) 90px;
}

.projects-page > * { grid-column: 1 / -1; }

.projects-page .lead { margin-bottom: 36px; max-width: none; }

/* filterknoppen (pills) -------------------------------------- */

.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.filter-pill {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 700;
  padding: 11px 26px;
  border-radius: 50px;
  border: 2px solid var(--blauw);
  background: transparent;
  color: var(--blauw);
  cursor: url('../img/cursor-pointer.svg') 8 3, pointer;
  transition: background-color .25s ease, color .25s ease;
}
.filter-pill:hover { background: rgba(63, 88, 185, 0.12); }
.filter-pill.active {
  background: var(--blauw);
  color: var(--wit);
}

.filters-divider {
  border: none;
  border-top: 2px solid var(--blauw);
  margin-bottom: 48px;
}

/* mappen-grid ------------------------------------------------- */

.folder-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: 32px;
  /* rijen dichter op elkaar; uitspringende foto's mogen overlappen */
  row-gap: 14px;
}

.folder {
  position: relative;
  display: block;
  text-decoration: none;
  /* wat ruimte boven de map zodat de foto's eruit kunnen springen */
  margin-top: 30px;
  color: var(--wit);
  font-family: var(--font-body);
  font-size: 18px;
  cursor: url('../img/cursor-pointer.svg') 8 3, pointer;
  z-index: 1;
}
/* een geopende map (en z'n foto's) over de rij erboven heen */
.folder:hover,
.folder.is-open { z-index: 20; }

/* de map zelf: 3 svg-lagen (achterkant, voorkant-zak, dichte map) */
.folder-graphic {
  position: relative;
  display: block;
  isolation: isolate;          /* eigen stapelcontext: lagen blijven binnen de map */
  transition: transform .25s ease;
}
.folder-graphic img {
  display: block;
  width: 100%;
  height: auto;
}

/* lichte voorkant (de zak) = standaardweergave, bepaalt de hoogte */
.folder-front {
  position: relative;
  z-index: 3;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 45, 0.22));
}
/* donkere achterkant: alleen zichtbaar bij hover/open */
.folder-back {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  z-index: 1;
  opacity: 0;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 45, 0.22));
  transition: opacity .25s ease;
}

.folder:hover .folder-graphic,
.folder.is-open .folder-graphic { transform: translateY(-4px); }
.folder:hover .folder-back,
.folder.is-open .folder-back { opacity: 1; }

/* tekst op de map (boven alle lagen) -------------------------- */
.folder-label {
  font-family: var(--font-mono);
  position: absolute;
  /* gecentreerd op de lichte zak (die iets links/onder in het canvas zit) */
  left: 0;
  right: 8%;
  top: 62%;
  transform: translateY(-50%);
  z-index: 5;
  text-align: center;
  line-height: 1.5;
  pointer-events: none;
}
.folder-cat { display: block; }

/* foto's: zitten TUSSEN de achterkant (z1) en de voorkant (z3) */
.folder-previews {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 2;
  pointer-events: none;
}
.folder-previews img {
  position: absolute;
  left: 50%;
  /* vanaf de BOVENkant verankerd: alle tops op gelijke hoogte boven de map,
     dus lage foto's steken net zo ver uit; hoge foto's hangen dieper de map in */
  top: -32%;
  width: 40%;
  height: auto;                 /* even breed, eigen natuurlijke hoogte ... */
  min-height: 50%;              /* ... maar minimaal 50% hoog zodat lage foto's
                                   met hun onderkant in de map vallen */
  object-fit: cover;            /* te lage foto's nette bijsnijden i.p.v. rekken */
  object-position: center;
  border-radius: 4px;
  border: 3px solid var(--wit);
  box-shadow: 0 6px 16px rgba(0, 0, 45, 0.30);
  transform-origin: top center;
  /* startpositie: verstopt (omlaag in de map) */
  transform: translateX(-50%) translateY(130%) scale(.5) rotate(0deg);
  opacity: 0;
  transition: transform .45s cubic-bezier(.34, 1.56, .64, 1), opacity .3s ease;
}

/* uitgewaaierd op hover / wanneer geopend */
.folder:hover .folder-previews img,
.folder.is-open .folder-previews img { opacity: 1; }
.folder:hover .folder-previews img:nth-child(1),
.folder.is-open .folder-previews img:nth-child(1) {
  transform: translateX(-86%) translateY(0) rotate(-12deg) scale(1);
  transition-delay: .02s;
}
.folder:hover .folder-previews img:nth-child(2),
.folder.is-open .folder-previews img:nth-child(2) {
  transform: translateX(-50%) translateY(-4%) rotate(0deg) scale(1.04);
  z-index: 2;
  transition-delay: .08s;
}
.folder:hover .folder-previews img:nth-child(3),
.folder.is-open .folder-previews img:nth-child(3) {
  transform: translateX(-14%) translateY(0) rotate(12deg) scale(1);
  transition-delay: .14s;
}

/* masonry met daadwerkelijke projecten (toggle via filters) */
.projects-page .masonry { margin-top: 10px; }
.projects-page [hidden] { display: none; }

@media screen and (max-width: 1000px) {
  .folder-grid { grid-template-columns: repeat(3, 1fr); }
}
@media screen and (max-width: 680px) {
  .projects-page { padding: 40px var(--grid-margin) 70px; }
  .folder-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .folder { font-size: 16px; }
}