/******************/
/* MARK: KLEUREN */
/****************/

:root {
  --background-color: #160a04;
  --wood-darkest: #120a06;
  --wood-dark: #2b1506;
  --wood-border: #3d2b1f;
  --parchment: #f5ebd6;
  --text-gold: #ffd700;
  --gold-dark: #b89614;
  --amber-100: #fef3c7;
  --amber-200: #fde68a;
  --amber-300: #fcd34d;
  --amber-500: #f59e0b;
  --amber-800: #92400e;
  --amber-900: #78350f;
  --amber-950: #451a03;
  --zinc-700: #3f3f46;
  --zinc-800: #27272a;
  --page-glow: #2b1409;
  --sources-wood-light: #3d2314;
  --shadow-heavy: rgba(0, 0, 0, 0.8);
  --wood-highlight: rgba(255, 255, 255, 0.15);
  --parchment-grain: #e3d0ae;
  --parchment-shadow: #d4be96;
  --shadow-medium: rgba(0, 0, 0, 0.5);
  --parchment-border: #ba9e73;
  --shadow-soft: rgba(0, 0, 0, 0.3);
  --tab-border: rgba(120, 53, 15, 0.5);
  --search-background: rgba(254, 243, 199, 0.9);
  --search-border: rgba(146, 64, 14, 0.4);
  --search-placeholder: rgba(146, 64, 14, 0.6);
  --muted-amber: rgba(253, 230, 138, 0.8);
  --category-border: rgba(180, 83, 9, 0.6);
  --details-border: rgba(120, 53, 15, 0.2);
  --direct-credit-border: rgba(252, 211, 77, 0.6);
  --research-border: rgba(146, 64, 14, 0.2);
  --accessibility-border: #d4a373;
  --skip-background: #231204;
  --skip-text: #fff3dc;
}





/****************/
/* MARK: FONTS */
/**************/

@font-face {
  font-family: 'Eastwood';
  src: url('../type/Eastwood.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('../type/Roboto-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('../type/Roboto-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Rye';
  src: url('../type/Rye-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}





/****************/
/* MARK: BASIS */
/**************/

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





/***************************/
/* MARK: ALGEMENE STYLING */
/*************************/

.page-body > header,
.page-body > main {
  --shadow-heavy: var(--theme-surface-shadow, rgba(0, 0, 0, 0.8));
  --shadow-medium: var(--theme-surface-shadow, rgba(0, 0, 0, 0.5));
  --shadow-soft: var(--theme-surface-shadow, rgba(0, 0, 0, 0.3));
  --wood-highlight: var(--theme-inset-highlight, rgba(255, 255, 255, 0.15));
  --parchment-grain: var(--theme-paper-grain, #e3d0ae);
  --parchment-shadow: var(--theme-paper-inset, #d4be96);
  --search-background: var(--theme-input-background, rgba(254, 243, 199, 0.9));
  --search-placeholder: var(--theme-input-placeholder, rgba(146, 64, 14, 0.6));
}

.page-body {
  font-family: 'Roboto';
  background: radial-gradient(circle at top, var(--page-glow) 0%, var(--background-color) 70%);
  color: var(--amber-950);
  min-height: 100vh;
  padding: 0;
  box-sizing: border-box;
  margin: 0;
}

h1 {
  font-family: 'Rye';
  font-size: 1.75rem;
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

h2 {
  font-family: 'Rye', 'Eastwood';
  font-size: 1.25rem;
  color: var(--amber-950);
  margin: 0;
}

h3 {
  font-family: 'Roboto';
  font-weight: 700;
  color: var(--amber-950);
  font-size: 1rem;
  margin: 0;
  line-height: 1.3;
}

.page-container {
  max-width: 72rem;
  margin-left: auto;
  margin-right: auto;
}

.text-center {
  text-align: center;
}

.hidden {
  display: none !important;
}

.wooden-plank {
  background: var(--theme-banner-background, linear-gradient(180deg, var(--sources-wood-light), var(--wood-dark)));
  border: 0.25rem solid var(--theme-border, var(--wood-border));
  box-shadow: 0 10px 25px var(--shadow-heavy), inset 0 1px 1px var(--wood-highlight);
  position: relative;
  border-radius: 0.75rem;
}

.parchment-bg {
  background-color: var(--theme-paper-base, var(--parchment));
  background-image: radial-gradient(var(--parchment-grain) 1px, transparent 1px);
  background-size: 12px 12px;
  box-shadow: inset 0 0 25px var(--parchment-shadow), 0 6px 16px var(--shadow-medium);
  border: 2px solid var(--parchment-border);
}





/*****************************/
/* MARK: NAV EN PAGINATITEL */
/***************************/

.nav-margin {
  margin-bottom: 1.5rem;
}

.header-margin {
  margin-bottom: 2rem;
}

.page-body .header-card h1 {
  background: none;
  color: var(--theme-heading-color, #f4c468);
  -webkit-text-fill-color: currentColor;
  text-shadow: none;
  filter: none;
}

.header-card {
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.sub-title {
  color: var(--theme-heading-color, var(--amber-200));
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.75rem;
  font-style: italic;
}

.tab-btn {
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-weight: 700;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.tab-container {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  justify-content: center;
  gap: 0.75rem;
}

.tab-btn-active {
  background-color: var(--theme-tab-selected, var(--amber-500));
  color: var(--theme-tab-selected-text, var(--amber-950));
  box-shadow: 0 10px 15px -3px var(--shadow-soft);
  border: 1px solid var(--amber-300);
}

.tab-btn-inactive {
  background-color: var(--theme-tab-background, var(--zinc-800));
  color: var(--theme-tab-text, var(--amber-200));
  border: 1px solid var(--tab-border);
}

.tab-btn-inactive:hover {
  background-color: var(--theme-tab-hover, var(--zinc-700));
}





/****************************/
/* MARK: INHOUD EN FILTERS */
/**************************/

.view-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

.view-section > h2 {
  color: var(--theme-heading-color, var(--amber-200));
}

.filter-bar {
  border-radius: 0.75rem;
  padding: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.search-input {
  width: 100%;
  padding: 0.625rem 1rem;
  border-radius: 0.5rem;
  background-color: var(--search-background);
  border: 1px solid var(--search-border);
  color: var(--amber-950);
  font-size: 0.875rem;
  box-sizing: border-box;
}

.search-input::placeholder {
  color: var(--search-placeholder);
}

.search-input:focus {
  outline: none;
  border-color: var(--amber-800);
}

.filter-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 7rem), 1fr));
  width: 100%;
  gap: 0.5rem;
  justify-content: center;
}

.filter-btn {
  padding: 0.375rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s ease-in-out;
}

.filter-btn-active {
  background-color: var(--amber-900);
  color: var(--amber-100);
}

.filter-btn-inactive {
  background-color: var(--muted-amber);
  color: var(--amber-950);
}

.filter-btn-inactive:hover {
  background-color: var(--amber-300);
}





/*****************************/
/* MARK: AFBEELDINGSBRONNEN */
/***************************/

.sources-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.5rem;
  width: 100%;
}

.source-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: space-between;
  border-radius: 0.75rem;
  overflow: hidden;
  height: 100%;
}

.card-img-container {
  position: relative;
  width: 100%;
  height: 13rem;
  background-color: var(--amber-950);
  overflow: hidden;
}

.card-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.category-badge {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background-color: var(--amber-950);
  color: var(--amber-200);
  font-size: 0.625rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
  text-transform: uppercase;
  border: 1px solid var(--category-border);
}

.card-body {
  padding: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.35rem;
}

.card-filename {
  font-size: 0.6875rem;
  font-family: Roboto;
  color: var(--amber-800);
  margin: 0;
}

.card-details {
  font-size: 0.75rem;
  color: var(--amber-950);
  padding-top: 0.5rem;
  margin-top: 0.25rem;
  border-top: 1px solid var(--details-border);
}

.source-credit {
  font-size: 0.6875rem;
  margin-top: 0.125rem;
}

.card-footer {
  align-self: end;
  padding: 1rem;
  padding-top: 0;
}

.card-btn {
  width: 100%;
  padding: 0.5rem 0;
  border-radius: 0.375rem;
  background-color: var(--amber-800);
  color: var(--amber-100);
  font-weight: 700;
  font-size: 0.75rem;
  display: grid;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  text-decoration: none;
  transition: background-color 0.2s ease;
  box-sizing: border-box;
  grid-auto-flow: column;
  text-align: center;
}

.card-btn:hover {
  background-color: var(--amber-900);
}

.card-badge-direct {
  width: 100%;
  padding: 0.5rem 0;
  border-radius: 0.375rem;
  background-color: var(--muted-amber);
  color: var(--amber-900);
  font-weight: 600;
  font-size: 0.75rem;
  text-align: center;
  display: block;
  border: 1px solid var(--direct-credit-border);
  box-sizing: border-box;
}

.sources-empty {
  grid-column: 1 / -1;
  padding: 2rem;
  text-align: center;
  font-weight: bold;
}





/**********************************/
/* MARK: ONDERZOEK EN LITERATUUR */
/********************************/

.research-card {
  border-radius: 0.75rem;
  padding: 1.25rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

.research-header {
  border-bottom: 1px solid var(--research-border);
  padding-bottom: 0.75rem;
}

.research-subtitle {
  font-size: 0.875rem;
  line-height: 1.5;
}

.research-list {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-body .research-list > * {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  gap: 0.875rem;
  min-width: 0;
  padding: clamp(1.125rem, 2.5vw, 1.5rem);
  border-radius: 0.625rem;
  color: var(--theme-paper-ink, #451a03);
  overflow-wrap: anywhere;
}

.page-body .research-list .research-source-heading {
  display: grid;
  justify-content: space-between;
  align-items: center;
  border-bottom: 0.0625rem solid var(--details-border);
  padding-bottom: 0.75rem;
  margin: 0;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.5rem;
}

.research-source-heading h3 {
  font-size: 1.125rem;
}

.research-source-heading .category-badge {
  position: static;
  justify-self: start;
}

.page-body .research-list .research-description {
  font-size: 0.875rem;
  margin: 0;
  line-height: 1.65;
  color: var(--amber-950);
}

.page-body .research-list .research-source-footer {
  display: grid;
  gap: 0.5rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  margin: 0;
  grid-template-columns: minmax(0, 1fr);
}

.page-body .research-list .research-source-heading h3,
.page-body .research-list .research-source-footer p {
  margin: 0;
}

.page-body .research-list .research-source-heading h3 {
  line-height: 1.4;
}

.research-source-footer a {
  color: var(--amber-900);
  font-weight: bold;
  text-decoration: underline;
}





/**************************************/
/* MARK: TOETSENBORD EN SCREENREADER */
/************************************/

/* De link verschijnt pas zodra je er met Tab op komt. */
.page-body > .skip-link {
  position: fixed;
  inset: 0.5rem auto auto 0.5rem;
  z-index: 5000;
  max-width: calc(100vw - 1rem);
  padding: 0.75rem 1rem;
  border: 0.125rem solid var(--accessibility-border);
  border-radius: 0.25rem;
  background: var(--skip-background);
  color: var(--skip-text);
  font-weight: bold;
  line-height: 1.5;
  text-decoration: underline;
  overflow-wrap: anywhere;
  transform: translateY(calc(-100% - 1rem));
  transition: none;
}

.page-body > .skip-link:focus {
  transform: none;
  outline: 0.1875rem solid var(--text-gold);
  outline-offset: 0.125rem;
}

/* De navigatie mag het begin van de inhoud niet bedekken. */
.page-body > #mainContent {
  scroll-margin-top: 6rem;
}

.page-body > #mainContent:focus-visible {
  outline: 0.1875rem solid var(--accessibility-border);
  outline-offset: 0.1875rem;
}

/* Dit label blijft leesbaar voor een screenreader. */
.page-body .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}





/***************************/
/* MARK: GROTERE SCHERMEN */
/*************************/

/* Op kleinere schermen staat alles onder elkaar. Hier komt er meer ruimte bij. */

@media (min-width: 40rem) {
  .sub-title {
    font-size: 0.875rem;
  }

  .tab-btn {
    font-size: 0.875rem;
  }

  .sources-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .research-card {
    padding: 1.5rem;
  }

  .tab-container {
    grid-template-columns: repeat(2, minmax(0, max-content));
  }

  .research-source-heading {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .research-source-footer {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 40.625rem) {
  h1 {
    font-size: 2.25rem;
  }
}

@media (min-width: 48rem) {
  .header-card {
    padding: 2.5rem;
  }

  .filter-bar {
    padding: 1.25rem 1.5rem;
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  }

  .search-input {
    width: 100%;
  }
}

@media (min-width: 64rem) {
  .sources-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}





@media (forced-colors: active) {
  .page-body > header :focus-visible,
  .page-body > main :focus-visible,
  .page-body > .skip-link:focus,
  .page-body > #mainContent:focus-visible {
    outline-color: Highlight;
  }

  .page-body .header-card h1 {
    color: CanvasText;
    -webkit-text-fill-color: CanvasText;
  }
}






/******************************/
/* MARK: AANVULLENDE MEDIA */
/****************************/

.source-card[data-media-kind="cover"] .card-img-container img {
  object-fit: contain;
}

.card-filename {
  overflow-wrap: anywhere;
}

.tab-container .tab-btn {
  min-height: 2.75rem;
}

@media (min-width: 40rem) {
  .tab-container {
    grid-template-columns: repeat(3, minmax(0, max-content));
  }
}