/* ================================================
   WORK-PAGE.CSS — gedeelde stijlen voor de
   overzichtspagina's (TU Delft, Personal, IED).
   Toont per werkveld een kader met titel,
   beschrijving en een 2×2 raster met projectkaarten.
   ================================================ */

:root {
  --kleur-achtergrond: #FFFFE0;
  --kleur-creme:       #FFF4CC;
  --kleur-roze:        #F4C9D6;
  --kleur-bruin:       #3E2723;
  --kleur-olijf:       #7A8450;

  --font-handschrift: 'Caveat', cursive;
  --font-body:        'Inter', sans-serif;

  --spring:        cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  --gap: clamp(1.2rem, 3vw, 2.5rem);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--kleur-bruin);
  background: transparent;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }

/* ------------------------------------------------
   VASTE ACHTERGROND
   ------------------------------------------------ */
.bg-stripes { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.bg-svg     { position: absolute; inset: 0; width: 100%; height: 100%; }

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--kleur-achtergrond);
}

/* ------------------------------------------------
   HOME-KNOP
   ------------------------------------------------ */
.home-btn {
  position: fixed;
  top: 1.4rem;
  left: 1.6rem;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-handschrift);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--kleur-bruin);
  background: rgba(255, 255, 224, 0.82);
  backdrop-filter: blur(10px);
  border: 1.5px solid var(--kleur-bruin);
  border-radius: 100px;
  padding: 0.4rem 1.1rem 0.4rem 0.8rem;
  transition: background 0.2s, color 0.2s;
}
.home-btn:hover { background: var(--kleur-bruin); color: var(--kleur-achtergrond); }
.home-btn svg   { width: 16px; height: 16px; flex-shrink: 0; transition: transform 0.2s var(--spring); }
.home-btn:hover svg { transform: translateX(-3px); }

/* ------------------------------------------------
   STROOKJE BOVEN/ONDER — toont de gestreepte achtergrond
   ------------------------------------------------ */
.page-strip {
  height: clamp(70px, 12vh, 120px);
  width: 100%;
}

/* ------------------------------------------------
   HOOFD-KADER — wit vlak over volle breedte
   ------------------------------------------------ */
.page-card {
  background: var(--kleur-achtergrond);
  width: 100%;
  min-height: calc(100vh - clamp(70px, 12vh, 120px));
  padding: var(--gap);
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

/* ------------------------------------------------
   PAGINATITEL + BESCHRIJVING
   ------------------------------------------------ */
.page-title {
  font-family: var(--font-handschrift);
  font-size: clamp(2.8rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--kleur-bruin);
  text-align: center;
}

.page-desc {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(0.85rem, 1.4vw, 1rem);
  line-height: 1.65;
  max-width: 56ch;
  color: var(--kleur-bruin);
  opacity: 0.72;
  margin-top: calc(var(--gap) * -0.5);
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

/* ------------------------------------------------
   PROJECT-KAARTEN — 2×2 grid, 3:2 ratio
   ------------------------------------------------ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(0.8rem, 1.5vw, 1.4rem);
  max-width: clamp(480px, 68%, 820px);
  margin: 0 auto;
  width: 100%;
}

/* Wrapper: kaart + bijschrift */
.project-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-caption {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(0.75rem, 1.1vw, 0.88rem);
  line-height: 1.5;
  color: var(--kleur-bruin);
  opacity: 0.62;
  text-align: center;
}

.project-card {
  position: relative;
  aspect-ratio: 3 / 2;
  width: 100%;
  overflow: hidden;
  cursor: pointer;
  border: none;
  background: var(--kleur-creme);
  padding: 0;
  outline: 1.5px solid rgba(62, 39, 35, 0.18);
  display: block;          /* werkt zowel als <button> als <a> */
  text-decoration: none;

  /* Animatie beginstand */
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity   0.7s var(--ease-out-expo),
    transform 0.7s var(--spring);
}

.project-card.in-view { opacity: 1; transform: translateY(0); }
.project-card:nth-child(2) { transition-delay: 0.08s; }
.project-card:nth-child(3) { transition-delay: 0.16s; }
.project-card:nth-child(4) { transition-delay: 0.24s; }

/* Cover-foto vult de kaart */
.project-card .card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out-expo);
}
.project-card:hover .card-img { transform: scale(1.05); }

/* Donkere gradient over de kaart */
.card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(62, 39, 35, 0.28);
  transition: background 0.3s;
}
.project-card:hover .card-overlay {
  background: rgba(62, 39, 35, 0.45);
}

/* Kaart zonder foto */
.project-card.no-cover { background: var(--kleur-creme); }
.project-card.no-cover .card-overlay {
  background: rgba(62, 39, 35, 0.08);
}
.project-card.no-cover:hover .card-overlay {
  background: rgba(62, 39, 35, 0.15);
}

/* Projecttitel — horizontaal en verticaal gecentreerd */
.card-title {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-handschrift);
  font-size: clamp(1.6rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--kleur-bruin);
  line-height: 1;
  z-index: 2;
  pointer-events: none;
  text-align: center;
  padding: 1rem;
  transition: color 0.3s;
}

/* Als er een foto achter zit: witte tekst */
.project-card:not(.no-cover) .card-title {
  color: var(--kleur-achtergrond);
  text-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

/* ------------------------------------------------
   FOTO-KAART MET WITTE RAND (object-fit: contain)
   Voor tekeningen op een witte achtergrond: de hele
   tekening blijft zichtbaar, met witte rand eromheen.
   De kaartachtergrond is exact wit zodat de foto en
   de rand naadloos in elkaar overlopen.
   ------------------------------------------------ */
.project-card.cover-contain {
  background: #FFFFFF;
}
.project-card.cover-contain .card-img {
  object-fit: contain;
  background: #FFFFFF;
  padding: clamp(0.8rem, 2.5vw, 1.8rem);
}
/* Geen donkere waas → rustige, witte uitstraling */
.project-card.cover-contain .card-overlay {
  background: transparent;
}
.project-card.cover-contain:hover .card-overlay {
  background: rgba(62, 39, 35, 0.06);
}
/* Donker label, leesbaar op het wit */
.project-card.cover-contain .card-title {
  color: var(--kleur-bruin);
  text-shadow: none;
}

/* ------------------------------------------------
   FOTO-KAART MET ZWARTE RAND (object-fit: contain)
   Voor foto's op een donkere achtergrond: de hele
   foto blijft zichtbaar, met zwarte rand eromheen.
   ------------------------------------------------ */
.project-card.cover-contain-dark {
  background: #000000;
}
.project-card.cover-contain-dark .card-img {
  object-fit: contain;
  background: #000000;
  padding: clamp(0.8rem, 2.5vw, 1.8rem);
}
.project-card.cover-contain-dark .card-overlay {
  background: transparent;
}
.project-card.cover-contain-dark:hover .card-overlay {
  background: rgba(255, 255, 255, 0.08);
}
.project-card.cover-contain-dark .card-title {
  color: var(--kleur-achtergrond);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}

/* Portret-variant voor Personal projects (3:5 staand) */
.projects-grid.tall .project-card {
  aspect-ratio: 3 / 5;
}

/* "Nog in te vullen" */
.card-title.placeholder-title {
  opacity: 0.45;
  font-style: italic;
  font-size: clamp(1rem, 2vw, 1.5rem);
}

/* ------------------------------------------------
   OVERLAY — opent bij klik op een kaart
   ------------------------------------------------ */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  flex-direction: column;
  background: var(--kleur-achtergrond);
  overflow-y: auto;

  opacity: 0;
  pointer-events: none;
  transform: translateY(30px);
  transition:
    opacity   0.45s var(--ease-out-expo),
    transform 0.45s var(--spring);
}

.overlay.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

/* Overlay-header met sluitknop */
.overlay-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem clamp(1.5rem, 5vw, 4rem);
  background: rgba(255, 255, 224, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(62,39,35,0.12);
}

.overlay-title {
  font-family: var(--font-handschrift);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1;
}

/* Sluitknop rechtsboven */
.overlay-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1.5px solid var(--kleur-bruin);
  background: transparent;
  cursor: pointer;
  color: var(--kleur-bruin);
  flex-shrink: 0;
  transition: background 0.2s, color 0.2s, transform 0.3s var(--spring);
}
.overlay-close:hover {
  background: var(--kleur-bruin);
  color: var(--kleur-achtergrond);
  transform: rotate(90deg);
}
.overlay-close svg { width: 18px; height: 18px; }

/* Galerij */
.overlay-gallery {
  columns: 3 260px;
  column-gap: clamp(0.8rem, 1.5vw, 1.2rem);
  padding: clamp(1.5rem, 3vw, 3rem) clamp(1.5rem, 5vw, 4rem) 5rem;
}

.overlay-gallery .gallery-item {
  break-inside: avoid;
  margin-bottom: clamp(0.8rem, 1.5vw, 1.2rem);
  overflow: hidden;
  border-radius: 3px;
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity   0.6s var(--ease-out-expo),
    transform 0.6s var(--spring);
}
.overlay-gallery .gallery-item.in-view {
  opacity: 1;
  transform: translateY(0);
}
.overlay-gallery .gallery-item img {
  width: 100%;
  height: auto;
  transition: transform 0.45s var(--ease-out-expo);
}
.overlay-gallery .gallery-item:hover img { transform: scale(1.03); }

/* Placeholder in overlay */
.overlay-gallery .gallery-item.placeholder {
  background: var(--kleur-creme);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px dashed rgba(62,39,35,0.3);
  font-family: var(--font-handschrift);
  font-size: 1rem;
  color: var(--kleur-bruin);
  opacity: 0.45 !important;
  transform: none !important;
}

/* Body geblokkeerd bij open overlay */
body.overlay-open { overflow: hidden; }

/* ------------------------------------------------
   RESPONSIVE
   ------------------------------------------------ */
@media (max-width: 700px) {
  .projects-grid { grid-template-columns: 1fr; }
  .overlay-gallery { columns: 1; }
}

@media (max-width: 900px) and (min-width: 701px) {
  .overlay-gallery { columns: 2; }
}

/* ================================================
   BOEK — bladerende spreads (page-flip)
   De rechterhelft slaat vanaf de rug (midden) om
   naar links en onthult de volgende spread.
   ================================================ */
.book-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: clamp(0.5rem, 2vw, 1.5rem) 0 clamp(1rem, 3vw, 2rem);
}

.book {
  width: 100%;
  max-width: 940px;
  outline: none;
}

/* Toneel met perspectief; verhouding gelijk aan de spread-foto's (4240×2832) */
.book-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 4240 / 2832;
  perspective: 2200px;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* Volledige spread-lagen (onder = volgende, curr = huidige) */
.book-layer {
  position: absolute;
  inset: 0;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-position: center;
}
.book-layer.clip-left  { clip-path: inset(0 50% 0 0); } /* alleen linkerhelft */
.book-layer.clip-right { clip-path: inset(0 0 0 50%); } /* alleen rechterhelft */

/* Het omslaande blad (een halve spread) */
.book-leaf {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(0.36, 0.1, 0.2, 1);
  z-index: 5;
  will-change: transform;
}
.book-leaf.is-hidden { display: none; }

.book-leaf-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  background-size: 200% 100%;   /* volle spreadbreedte; helft zichtbaar via positie */
  background-repeat: no-repeat;
  overflow: hidden;
}
.book-leaf-back { transform: rotateY(180deg); }

/* Schaduw die meeloopt met het omslaan (geeft diepte) */
.book-leaf-face::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,0.18), rgba(0,0,0,0) 60%);
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
}
.book-leaf.is-turning .book-leaf-front::after { opacity: 1; }

/* Navigatiebalk onder het boek (donker op crème) */
.book-nav {
  display: inline-flex;
  align-items: center;
  margin-top: clamp(0.8rem, 2vw, 1.4rem);
  border: 1.5px solid var(--kleur-bruin);
  border-radius: 100px;
  overflow: hidden;
}
.book-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--kleur-bruin);
  padding: 0.55rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  transition: background 0.18s, color 0.18s;
  -webkit-tap-highlight-color: transparent;
}
.book-btn:hover, .book-btn:focus-visible {
  background: var(--kleur-bruin);
  color: var(--kleur-achtergrond);
  outline: none;
}
.book-btn svg { width: 18px; height: 18px; pointer-events: none; }

.book-divider { width: 1px; height: 20px; background: rgba(62,39,35,0.25); flex-shrink: 0; }

.book-counter {
  font-family: var(--font-handschrift);
  font-size: 1.15rem;
  color: var(--kleur-bruin);
  padding: 0 0.9rem;
  min-width: 4rem;
  text-align: center;
  user-select: none;
}

.book-hint {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(0.72rem, 1vw, 0.85rem);
  color: var(--kleur-bruin);
  opacity: 0.55;
  margin-top: 0.7rem;
  text-align: center;
}