/* =====================================================================
   site.css — Wasserstadt Hamburg · ontwerpsysteem (overhaul 2026-06)
   ---------------------------------------------------------------------
   Eén systeem voor alle negen pagina's van de spine.
   Thema A ("Hanze-archief") is het standaardthema en staat hier;
   thema B ("Nordwasser") en C ("Peilstand") zijn overrides in
   css/thema-b.css en css/thema-c.css, geschakeld via
   <html data-thema="a|b|c">.

   Harde kaders: offline onder file://, relatieve paden, fonts lokaal.
   ===================================================================== */

/* ── 0 · Lokale fonts ─────────────────────────────────────────── */
/* Type-systeem (drie rollen):
   · Fraunces        → serif display: HAMBURG, grote editorial koppen,
                        lead-zinnen en pull-quotes (warm, hoog contrast).
   · Inter           → werkpaard: lopende tekst, UI, lange leesblokken.
   · Space Grotesk   → technische laag: labels, sectienummers, meta, nav,
                        fiche-veldnamen (architectonische precisie). */
@font-face { font-family: 'Fraunces'; src: url('../fonts/fraunces-900.woff2') format('woff2'); font-weight: 900; font-style: normal; font-display: swap; }
@font-face { font-family: 'Fraunces'; src: url('../fonts/fraunces-600.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: 'Fraunces'; src: url('../fonts/fraunces-400.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Fraunces'; src: url('../fonts/fraunces-300.woff2') format('woff2'); font-weight: 300; font-style: normal; font-display: swap; }
@font-face { font-family: 'Fraunces'; src: url('../fonts/fraunces-400-italic.woff2') format('woff2'); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-800.woff2') format('woff2'); font-weight: 800; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-900.woff2') format('woff2'); font-weight: 900; font-display: swap; }
@font-face { font-family: 'Space Grotesk'; src: url('../fonts/space-grotesk-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Space Grotesk'; src: url('../fonts/space-grotesk-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }
/* Gondens DEMO — retro/condensed display, enkel voor de landing-titel HAMBURG + WASSERSTADT (personal-use/educatieve licentie). */
@font-face { font-family: 'Gondens'; src: url('../fonts/gondens-demo.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }

/* ── 1 · Tokens (thema A = standaard) ─────────────────────────── */
:root {
  /* kleur */
  --bg: #F2EDE3;            /* papier */
  --bg-diep: #E9E2D4;       /* iets donkerder vlak */
  --ink: #1C1B18;           /* drukinkt */
  --ink-2: #5B564C;         /* secundaire tekst */
  --accent: #983B26;        /* baksteen */
  --water: #1F6F8B;         /* fleetwater */
  --water-diep: #143E52;
  --water-licht: #A8CFDE;
  --lijn: rgba(28, 27, 24, 0.18);
  --lijn-zacht: rgba(28, 27, 24, 0.09);
  --vlak: #FBF8F1;          /* kaart-/fiche-achtergrond */
  --inversie-bg: #143E52;   /* donkere blokken (waterlijn, fiche-kop) */
  --inversie-ink: #EDF4F7;
  --landing-map-opacity: 0.4;
  --kaart-blok-gamma: 1.072;

  /* typografie — drie rollen (zie @font-face) */
  --font-serif: 'Fraunces', Georgia, 'Times New Roman', serif;   /* display + lead */
  --font-sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;     /* body + UI */
  --font-label: 'Space Grotesk', 'Inter', sans-serif;            /* labels + meta */
  --font-titel: 'Gondens', 'Fraunces', Georgia, serif;           /* landing-titel HAMBURG/WASSERSTADT */
  --font-mono: 'Space Grotesk', ui-monospace, 'Courier New', monospace;
  /* compat: oudere regels die nog --font-display/--font-body lazen */
  --font-display: var(--font-sans);
  --font-body: var(--font-sans);

  --size-display: clamp(3rem, 9vw, 8rem);
  --size-h2: clamp(1.55rem, 3.2vw, 2.5rem);
  --size-h3: clamp(1.05rem, 1.7vw, 1.3rem);
  --size-lead: clamp(1.2rem, 2vw, 1.6rem);
  --size-body: clamp(1.01rem, 1.2vw, 1.1rem);
  --size-meta: 0.7rem;

  /* maat & ritme */
  --maat: 66ch;             /* leesbare regellengte body */
  --rand: clamp(1.25rem, 5vw, 4.5rem);   /* bladmarge */
  --regel: clamp(2.5rem, 6vh, 4.5rem);
  --radius: 2px;
  --nav-hoogte: 52px;
  --transitie: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ── 2 · Reset & basis ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-hoogte) + 1rem);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--size-body);
  font-weight: 400;
  line-height: 1.66;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Content-koppen zijn sans (editorial-report); de grote masthead-koppen
   krijgen serif via .pagina-kop h1 / .landing-typo (zie verderop). */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.05;
  margin: 0;
  letter-spacing: -0.02em;
}

p { margin: 0 0 1em; max-width: var(--maat); }
strong, b { font-weight: 600; }
a { color: var(--water); text-decoration: none; }
a:hover { color: var(--water-diep); }
img, svg { max-width: 100%; height: auto; }
button { font: inherit; }

::selection { background: var(--water-licht); color: var(--water-diep); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* kleine typo-hulpjes */
.meta {
  font-family: var(--font-label);
  font-weight: 500;
  font-size: var(--size-meta);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  font-feature-settings: 'tnum' 1;
}
/* serif-utility voor pull-quotes en editorial accenten */
.serif { font-family: var(--font-serif); font-weight: 600; }
em.kwiel, .pull {
  font-family: var(--font-serif);
  font-weight: 600;
  font-style: italic;
}

/* ── 3 · Persistente navigatie ────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-hoogte);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0 var(--rand);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--lijn-zacht);
  z-index: 1000;
}
/* fallback voor browsers zonder color-mix */
@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .site-nav { background: var(--bg); }
}

.nav-merk {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--water);
  white-space: nowrap;
}
.nav-merk b { color: var(--ink); font-weight: 700; }

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.4vw, 1.1rem);
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-item {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  white-space: nowrap;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}
.nav-item .nr {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--accent);
  margin-right: 0.3em;
}
.nav-item:hover { color: var(--ink); }
.nav-item.actief { color: var(--ink); border-bottom-color: var(--accent); }

/* thema-switcher */
.thema-switch {
  display: flex;
  gap: 2px;
  border: 1px solid var(--lijn);
  border-radius: var(--radius);
  overflow: hidden;
  flex: none;
}
.thema-switch button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.55rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.thema-switch button:hover { color: var(--ink); }
.thema-switch button.actief { background: var(--ink); color: var(--bg); }

/* voortgang */
.scroll-voortgang {
  position: fixed;
  top: 0; left: 0;
  height: 2px; width: 0%;
  background: var(--water);
  z-index: 1001;
}

/* ── 4 · Blad & paginakop (posteropener per pagina) ───────────── */
.blad {
  padding: calc(var(--nav-hoogte) + var(--regel)) var(--rand) var(--regel);
  max-width: 1500px;
  margin: 0 auto;
}

.pagina-kop {
  position: relative;
  padding: var(--regel) 0 calc(var(--regel) * 0.8);
  border-bottom: 2px solid var(--ink);
  margin-bottom: var(--regel);
}
.pagina-kop .kop-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-top: 1px solid var(--lijn);
  padding-top: 0.7rem;
  margin-bottom: clamp(1.5rem, 4vh, 3rem);
}
/* Masthead-titel: serif display (Fraunces) in LICHTE snede — warm en
   elegant, nooit zwaar (zware serif oogt log; vgl. actactuaires). */
.pagina-kop h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--size-display);
  line-height: 0.98;
  letter-spacing: -0.02em;
  max-width: 16em;
}
.pagina-kop h1 .dun {
  font-weight: 300;
  font-style: italic;
  color: var(--ink-2);
  letter-spacing: -0.01em;
}
.pagina-kop .kop-nr {
  position: absolute;
  right: 0;
  bottom: -0.04em;
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(4rem, 12vw, 11rem);
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1px var(--lijn);
  pointer-events: none;
  user-select: none;
}
/* de hoofdvraag: rustige sans (geen zware serif) */
.pagina-kop .kop-vraag {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--size-lead);
  line-height: 1.42;
  max-width: 26em;
  margin: clamp(1.5rem, 3.5vh, 2.6rem) 0 0 auto;  /* rechts uitgelijnd blok: posterasymmetrie */
  padding-left: clamp(0rem, 8vw, 6rem);
  color: var(--ink);
}
.pagina-kop .kop-vraag em { color: var(--accent); font-style: normal; font-weight: 700; }

/* ── 5 · Secties met margekolom ──────────────────────────────── */
.sectie {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) minmax(0, 3.2fr);
  gap: clamp(1rem, 3vw, 3rem);
  padding: calc(var(--regel) * 0.9) 0;
  border-top: 1px solid var(--lijn-zacht);
}
.sectie:first-of-type { border-top: 0; }

.s-marge {
  position: relative;
}
.s-marge .s-nr {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
  font-feature-settings: 'tnum' 1;
}
.s-marge .s-label {
  font-family: var(--font-label);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  position: sticky;
  top: calc(var(--nav-hoogte) + 1.25rem);
  display: block;
}

.s-inhoud h2 {
  font-size: var(--size-h2);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.5em;
  text-wrap: balance;
}
.s-inhoud h3 {
  font-size: var(--size-h3);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 1.8em 0 0.5em;
}

.lead {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--size-lead);
  line-height: 1.45;
  letter-spacing: -0.01em;
  max-width: 30em;
  margin-bottom: 0.9em;
  color: var(--ink);
}
.lead b, .lead strong { color: var(--accent); font-weight: 600; }

/* Sleutelbegrippen in de lopende lead/hoofdvraag — dikgedrukt accent
   (sans, geen italic/serif). Voor "infrastructuur en risico",
   "stedelijke kwaliteit" e.d. */
.term {
  font-weight: 700;
  color: var(--accent);
}

/* lopende tekstkolom: comfortabele Inter-leesmaat */
.s-inhoud p { color: var(--ink); }
.s-inhoud > p, .uitklap-binnen p { font-size: 1.02rem; }

/* afwisselend naar rechts geschoven inhoud — doorbreekt de vaste kolom */
.sectie.verschoven .s-inhoud { padding-left: clamp(0rem, 10vw, 8rem); }
body[data-pagina="fleeten"] .sectie.verschoven .s-inhoud,
body[data-pagina="binnenalster"] .sectie.verschoven .s-inhoud,
body[data-pagina="hafencity"] .sectie.verschoven .s-inhoud {
  padding-left: 0;
}

/* ── 6 · Uitklap (progressive disclosure) ─────────────────────── */
details.uitklap {
  margin: 1.2rem 0 0.4rem;
  border-top: 1px solid var(--lijn);
  border-bottom: 1px solid var(--lijn);
  max-width: var(--maat);
}
details.uitklap > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 0.2rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--water-diep);
  user-select: none;
}
details.uitklap > summary::-webkit-details-marker { display: none; }
details.uitklap > summary::before {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--accent);
  width: 1.1em;
  transition: transform 0.3s ease;
}
details.uitklap[open] > summary::before { content: '–'; }
details.uitklap > summary:hover { color: var(--accent); }
details.uitklap .uitklap-binnen {
  padding: 0.4rem 0.2rem 1.4rem;
}
details.uitklap .uitklap-binnen p { max-width: var(--maat); }

/* ── 7 · Feitenfiche ──────────────────────────────────────────── */
.fiche {
  background: var(--vlak);
  border: 1px solid var(--lijn);
  border-radius: var(--radius);
  margin: 1.8rem 0;
  max-width: 46rem;
  box-shadow: 6px 6px 0 var(--lijn-zacht);
}
.fiche .fiche-kop {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  background: var(--inversie-bg);
  color: var(--inversie-ink);
  padding: 0.6rem 1.1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.fiche .fiche-kop .mono { opacity: 0.7; }
.fiche dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.45rem 1.4rem;
  margin: 0;
  padding: 1rem 1.1rem 1.2rem;
}
.fiche dt {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-top: 0.18em;
}
.fiche dd { margin: 0; font-size: 0.95em; }

/* ── 8 · Vier begrippen — rechthoeken ─────────────────────────── */
.begrippen {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(0.5rem, 1.2vw, 1rem);
  margin: 1.8rem 0;
}
.begrip {
  position: relative;
  border: 1px solid var(--lijn);
  border-top: 4px solid var(--water);
  background: var(--vlak);
  border-radius: var(--radius);
  padding: 0.9rem 1rem 1.1rem;
  transition: transform var(--transitie), box-shadow var(--transitie);
}
.begrip:nth-child(even) { transform: translateY(0.9rem); } /* licht verspringend ritme */
.begrip:hover { box-shadow: 5px 5px 0 var(--lijn-zacht); }
.begrip .b-nr {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.35rem;
}
.begrip h3 {
  font-size: 1.02rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--water-diep);
  margin: 0 0 0.35rem;
}
.begrip p {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0;
}

/* ── 9 · Figuur-placeholder + bijschrift ──────────────────────── */
figure.figuur {
  margin: 2rem 0;
  max-width: 46rem;
}
figure.figuur.breed { max-width: none; }
.figuur-vlak {
  position: relative;
  border: 1px solid var(--lijn);
  background:
    repeating-linear-gradient(45deg,
      transparent 0 14px,
      var(--lijn-zacht) 14px 15px);
  background-color: var(--vlak);
  min-height: clamp(200px, 36vh, 380px);
  display: flex;
  align-items: center;
  justify-content: center;
}
.figuur-vlak .ph-label {
  background: var(--bg);
  border: 1px solid var(--lijn);
  padding: 0.5rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  text-align: center;
  max-width: 80%;
}
figure.figuur figcaption {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.9rem;
  padding-top: 0.55rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--ink-2);
}
figure.figuur figcaption .fig-nr {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  white-space: nowrap;
  padding-top: 0.1em;
}

/* ── 10 · Klikbare bronverwijzing + popup ─────────────────────── */
.cite {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--water);
  font: inherit;
  cursor: pointer;
  border-bottom: 1px dotted var(--water);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.cite:hover { color: var(--accent); border-bottom-color: var(--accent); }

.bron-popup {
  position: fixed;
  z-index: 2000;
  max-width: min(30rem, calc(100vw - 2rem));
  background: var(--vlak);
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 8px 8px 0 rgba(20, 62, 82, 0.18);
  padding: 0;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.bron-popup.open { opacity: 1; transform: none; pointer-events: auto; }
.bron-popup .bp-kop {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: var(--inversie-bg);
  color: var(--inversie-ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.45rem 0.8rem;
}
.bron-popup .bp-sluit {
  appearance: none; border: 0; background: transparent;
  color: inherit; cursor: pointer; font-family: var(--font-mono);
  font-size: 0.9rem; line-height: 1; padding: 0.1rem 0.3rem;
}
.bron-popup .bp-apa {
  font-size: 0.88rem;
  line-height: 1.55;
  padding: 0.9rem 0.9rem 0.4rem;
  margin: 0;
}
.bron-popup .bp-acties {
  display: flex;
  gap: 1.2rem;
  padding: 0.5rem 0.9rem 0.9rem;
}
.bron-popup .bp-acties a {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--water);
}

/* ── 11 · "Wie profiteert?"-marker ────────────────────────────── */
.profiteert {
  margin: 1.6rem 0;
  max-width: 46rem;
  border-left: 3px solid var(--accent);
  padding: 0.4rem 0 0.4rem 1.1rem;
}
.profiteert .p-vraag {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
}
.profiteert .p-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.profiteert .chip {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--lijn);
  border-radius: 99px;
  padding: 0.22rem 0.7rem;
  color: var(--ink-2);
}
.profiteert .chip.aan {
  background: var(--inversie-bg);
  border-color: var(--inversie-bg);
  color: var(--inversie-ink);
}

/* ── 11b · Interactie-integratiepunt ──────────────────────────── */
/* Schone placeholder voor de demo-fase: markeert waar de interactie
   per onderdeel komt, zonder de leesbaarheid te storen. */
.interactie-slot {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin: 1.4rem 0;
  max-width: var(--maat);
  border: 1px dashed var(--lijn);
  border-left: 4px solid var(--water);
  padding: 0.7rem 1rem;
  background: var(--vlak);
}
.interactie-slot .is-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--water-diep);
  white-space: nowrap;
}
.interactie-slot .is-naam {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.82rem;
  color: var(--ink-2);
}
.interactie-slot.signature { border-left-color: var(--accent); }
.interactie-slot.signature .is-tag { color: var(--accent); }

/* ── 12 · Spine-navigatie (vorige / volgende) ─────────────────── */
.spine-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 2px solid var(--ink);
  margin-top: var(--regel);
}
.spine-nav a {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.4rem 0.5rem;
  color: var(--ink);
  transition: background 0.25s ease;
}
.spine-nav a:hover { background: var(--bg-diep); }
.spine-nav .richting {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.spine-nav .titel {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.4vw, 1.6rem);
  letter-spacing: -0.03em;
}
.spine-nav .volgende { text-align: right; align-items: flex-end; grid-column: 2; }
.spine-nav .vorige { text-align: left; }

/* ── 13 · Waterlijn-divider (rode draad) ──────────────────────── */
.waterlijn {
  height: 56px;
  margin: 0;
  display: block;
  width: 100%;
}
.waterlijn path { fill: none; stroke: var(--water); stroke-width: 1.5; opacity: 0.55; }

/* ── 14 · Reveal-on-scroll ────────────────────────────────────── */
/* Alleen verbergen wanneer JS draait (html.js); zonder JS blijft alle
   inhoud zichtbaar (robuust onder file:// en voor toegankelijkheid). */
html.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s ease, transform 0.8s var(--transitie);
}
html.js .reveal.zichtbaar { opacity: 1; transform: none; }

/* ── 15 · Voetregel ───────────────────────────────────────────── */
.site-voet {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.2rem var(--rand) 1.6rem;
  border-top: 1px solid var(--lijn-zacht);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--ink-2);
}

/* ── 16 · Landing ─────────────────────────────────────────────── */
.landing-poster {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--nav-hoogte) + 1.5rem) var(--rand) 2rem;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--bg);
}
.landing-poster::before {
  content: none;
}
.landing-kop, .landing-voet {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  position: relative;
  z-index: 3;
}
.kaart-collage {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: var(--landing-map-opacity);
}
.kaart-collage::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../assets/landing/hamburg-map-bw.jpg');
  background-size: cover;
  background-position: center 46%;
}
.kaart-fragment {
  position: absolute;
  background-image: url('../assets/landing/hamburg-map-bw.jpg');
  background-repeat: no-repeat;
  background-size: var(--kaart-bg-size, 120vw auto);
  background-position: var(--kaart-bg-pos, center center);
  border: 0;
  box-shadow: 0 18px 48px rgba(28, 27, 24, 0.18);
  filter:
    grayscale(1)
    brightness(calc(var(--kaart-blok-gamma) * var(--blok-bright)))
    contrast(var(--blok-contrast));
  transform: translate3d(0, var(--blok-scroll-y, 0px), 0) scale(var(--blok-scale, 1));
  transform-origin: var(--blok-origin, center center);
  will-change: transform;
}
.kaart-fragment-1 {
  left: var(--f1-left, -4vw);
  top: var(--f1-top, calc(var(--nav-hoogte) + 2.8rem));
  width: var(--f1-width, 30vw);
  height: var(--f1-height, 24vh);
  --kaart-bg-size: 158vw auto;
  --kaart-bg-pos: 6% 14%;
  --blok-bright: 0.72;
  --blok-contrast: 1.35;
  --blok-origin: top left;
}
.kaart-fragment-2 {
  left: var(--f2-left, 24vw);
  top: var(--f2-top, calc(var(--nav-hoogte) + 5.7rem));
  width: var(--f2-width, 14vw);
  height: var(--f2-height, 20vh);
  --kaart-bg-size: 230vw auto;
  --kaart-bg-pos: 34% 20%;
  --blok-bright: 1.36;
  --blok-contrast: 0.82;
  --blok-origin: center center;
}
.kaart-fragment-3 {
  left: var(--f3-left, 48vw);
  top: var(--f3-top, calc(var(--nav-hoogte) + 0.2rem));
  width: var(--f3-width, 22vw);
  height: var(--f3-height, 23vh);
  --kaart-bg-size: 190vw auto;
  --kaart-bg-pos: 58% 13%;
  --blok-bright: 0.58;
  --blok-contrast: 1.58;
  --blok-origin: top center;
}
.kaart-fragment-4 {
  left: var(--f4-left, 77vw);
  top: var(--f4-top, 30vh);
  width: var(--f4-width, 26vw);
  height: var(--f4-height, 23vh);
  --kaart-bg-size: 148vw auto;
  --kaart-bg-pos: 96% 42%;
  --blok-bright: 1.18;
  --blok-contrast: 1.18;
  --blok-origin: center right;
}
.kaart-fragment-5 {
  left: var(--f5-left, 6vw);
  top: var(--f5-top, 64vh);
  width: var(--f5-width, 25vw);
  height: var(--f5-height, 28vh);
  --kaart-bg-size: 220vw auto;
  --kaart-bg-pos: 15% 82%;
  --blok-bright: 1.48;
  --blok-contrast: 0.74;
  --blok-origin: center left;
}
.kaart-fragment-6 {
  left: var(--f6-left, 55vw);
  top: var(--f6-top, 76vh);
  width: var(--f6-width, 34vw);
  height: var(--f6-height, 24vh);
  --kaart-bg-size: 172vw auto;
  --kaart-bg-pos: 76% 92%;
  --blok-bright: 0.84;
  --blok-contrast: 1.45;
  --blok-origin: bottom right;
}
.landing-typo { position: relative; z-index: 2; margin-top: clamp(2.2rem, 8vh, 5rem); }
/* HAMBURG — Gondens (retro condensed display), solide inkt.
   HAMBURG + het WASSERSTADT-waterwoord eronder delen hetzelfde font en
   dezelfde cap-hoogte, strak op elkaar → ze lezen als één lockup. */
.landing-typo .bg-word {
  font-family: var(--font-titel);
  font-weight: 400;
  font-size: clamp(3rem, 11vw, 13rem);   /* fallback; JS zet de echte grootte (cap-hoogte = WASSERSTADT) */
  line-height: 0.9;              /* ruimte voor de 'g'-staart van Hamburg */
  letter-spacing: 0.005em;
  color: var(--ink);
  white-space: nowrap;
  user-select: none;
  margin: 0;
  padding-left: 0.01em;          /* optische uitlijning H boven W */
}
/* Hamburg en Wasserstadt vormen één lockup: het waterwoord schuift strak
   onder Hamburg (negatieve marge knipt de lege regelhoogte weg). */
.water-word-container { width: 100%; margin-top: -0.04em; }
.water-svg { display: block; width: 100%; height: auto; overflow: hidden; }

.landing-sub {
  margin-top: clamp(1.4rem, 3.5vh, 2.8rem);
  display: grid;
  grid-template-columns: minmax(0, 30rem) 1fr;
  gap: clamp(1rem, 4vw, 4rem);
  align-items: end;
}
.landing-sub .lead {
  margin: 0;
  max-width: 22em;
  text-shadow: none;
}
.landing-sub .lead-mark {
  display: inline;
  background: var(--bg);
  padding: 0.03em 0.13em 0.06em;
  line-height: 1.28;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.landing-controls {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.4vw, 1.25rem);
  flex-wrap: wrap;
  justify-content: center;
}
.kaart-regelaar {
  display: grid;
  grid-template-columns: auto minmax(5.8rem, 8.8rem) 3.4em;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.kaart-regelaar input {
  width: 100%;
  accent-color: var(--water);
}
.kaart-regelaar output {
  text-align: right;
  color: var(--ink-2);
}
.landing-beeld-slot {
  border: 1px solid var(--lijn);
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, var(--lijn-zacht) 14px 15px);
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-cue {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--water-diep);
  text-decoration: none;
}
.scroll-cue .lijn {
  width: 1px; height: 48px;
  background: currentColor;
  animation: cue-adem 2.2s ease-in-out infinite;
  transform-origin: top center;
}
.scroll-cue .label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}
@keyframes cue-adem {
  0%, 100% { opacity: 0.35; transform: scaleY(1); }
  50% { opacity: 0.85; transform: scaleY(0.5); }
}

/* hoe werkt dit — vier stappen */
.hoewerkt {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1rem, 2vw, 1.8rem);
  margin-top: 1.5rem;
}
.hoewerkt .stap {
  border-top: 2px solid var(--ink);
  padding-top: 0.9rem;
}
.hoewerkt .stap .st-nr {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.6rem;
  font-feature-settings: 'tnum' 1;
}
.hoewerkt .stap h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.45rem;
}
.hoewerkt .stap p { font-size: 0.92rem; line-height: 1.55; color: var(--ink-2); margin: 0; }

/* ── 16b · Editorial-patronen (uit referentieonderzoek) ───────── */
/* Full-bleed sectiekop met groot nummer + serif-titel (hiërarchie). */
.blok {
  padding: clamp(2.5rem, 6vh, 5rem) var(--rand);
  border-top: 1px solid var(--lijn);
}
.blok.getint { background: var(--bg-diep); }       /* afwisselende tint (stateofaidesign) */
.blok.inkt { background: var(--inversie-bg); color: var(--inversie-ink); }
.blok-binnen { max-width: 1500px; margin: 0 auto; }
.blok-kop {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: clamp(1.5rem, 3.5vh, 2.6rem);
}
.blok-kop .bk-nr {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  font-feature-settings: 'tnum' 1;
}
.blok-kop h2 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(1.8rem, 4.5vw, 3.4rem);
  letter-spacing: -0.035em;
  line-height: 0.98;
}
.blok-kop .bk-rule { flex: 1; height: 1px; background: var(--lijn); align-self: center; }

/* Full-width zwarte CTA-balk met pijl (stateofaidesign). PRIMAIRE actie. */
.cta-balk {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: 100%;
  background: var(--inversie-bg);
  color: var(--inversie-ink);
  padding: clamp(1.5rem, 4vw, 2.6rem) clamp(1.5rem, 4vw, 2.8rem);
  border-radius: var(--radius);
  transition: transform var(--transitie), background 0.3s ease;
}
.cta-balk:hover { color: var(--inversie-ink); transform: translateY(-2px); }
.cta-balk .cta-tekst { display: flex; flex-direction: column; gap: 0.35rem; }
.cta-balk .cta-label {
  font-family: var(--font-label);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
}
.cta-balk .cta-titel {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 2.4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.cta-balk .cta-pijl {
  font-family: var(--font-sans);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1;
  flex: none;
  transition: transform var(--transitie);
}
.cta-balk:hover .cta-pijl { transform: translateX(0.4rem); }

/* secundaire CTA-balk (lichter, voor binnen tinted blokken) */
.cta-balk.licht { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.cta-balk.licht:hover { background: var(--ink); color: var(--bg); }

/* drie structuren op de landing */
.drie-structuren {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(0.6rem, 1.5vw, 1.2rem);
  margin-top: 2.4rem;
}
.structuur-kaart {
  display: block;
  position: relative;
  border: 1px solid var(--lijn);
  background: var(--vlak);
  padding: 1.2rem 1.2rem 1.4rem;
  color: var(--ink);
  transition: transform var(--transitie), box-shadow var(--transitie);
  overflow: hidden;
}
.structuur-kaart::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 5px;
  background: var(--water);
  transform: scaleX(0.22);
  transform-origin: left;
  transition: transform var(--transitie);
}
.structuur-kaart:hover { transform: translateY(-4px); box-shadow: 7px 7px 0 var(--lijn-zacht); color: var(--ink); }
.structuur-kaart:hover::after { transform: scaleX(1); }
.structuur-kaart .sk-nr { font-family: var(--font-mono); font-size: 0.66rem; color: var(--accent); }
.structuur-kaart h3 { font-size: 1.25rem; text-transform: uppercase; margin: 0.4rem 0 0.2rem; }
.structuur-kaart .sk-casus {
  font-family: var(--font-display); font-weight: 500;
  font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--water-diep);
  display: block; margin-bottom: 0.6rem;
}
.structuur-kaart p { font-size: 0.88rem; color: var(--ink-2); margin: 0; }

/* ── 16c · Site-diagram (leeswijzer / opbouw) ─────────────────── */
/* Inleiding → drie parallelle hoofdstukken → conclusie → literatuur.
   Toont de structuur én laat springen. Verticale "pijp"-connectoren,
   een parallel-bracket boven de drie hoofdstukken. */
.diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin: 1.5rem auto 0;
  max-width: 1100px;
}
.dg-pipe { width: 2px; height: clamp(22px, 4vh, 40px); background: var(--lijn); }
.dg-node {
  display: block;
  width: 100%;
  max-width: 540px;
  position: relative;
  border: 1.5px solid var(--ink);
  background: var(--vlak);
  border-radius: var(--radius);
  padding: 1rem 1.3rem;
  color: var(--ink);
  transition: transform var(--transitie), background 0.25s ease, box-shadow var(--transitie);
}
a.dg-node:hover { transform: translateY(-2px); box-shadow: 5px 5px 0 var(--lijn-zacht); color: var(--ink); }
.dg-node .dg-kop { display: flex; align-items: baseline; gap: 0.6rem; }
.dg-node .dg-nr {
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent);
  letter-spacing: 0.08em; font-feature-settings: 'tnum' 1;
}
.dg-node .dg-fase {
  font-family: var(--font-label); font-weight: 500; font-size: 0.62rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-2);
  margin-left: auto;
}
.dg-node h3 {
  font-family: var(--font-sans); font-weight: 700;
  font-size: 1.25rem; letter-spacing: -0.025em; margin: 0.25rem 0 0.1rem;
}
.dg-node p { font-size: 0.85rem; line-height: 1.5; color: var(--ink-2); margin: 0.2rem 0 0; max-width: none; }
.dg-node.start, .dg-node.merge { background: var(--inversie-bg); border-color: var(--inversie-bg); color: var(--inversie-ink); }
.dg-node.start h3, .dg-node.merge h3 { color: var(--inversie-ink); }
.dg-node.start p, .dg-node.merge p { color: rgba(237, 244, 247, 0.75); }
.dg-node.start .dg-fase, .dg-node.merge .dg-fase { color: rgba(237, 244, 247, 0.6); }
a.dg-node.start:hover, a.dg-node.merge:hover { color: var(--inversie-ink); }

/* parallel-groep: bracket boven de drie hoofdstukken */
.dg-parallel {
  width: 100%;
  --dg-gap: clamp(0.6rem, 1.5vw, 1.4rem);
}
.dg-bracket {
  position: relative;
  height: 0;
  margin-bottom: 0;
}
.dg-bracket::before {            /* horizontale rail */
  content: ''; position: absolute; top: 0;
  left: calc((100% - (2 * var(--dg-gap))) / 6);
  right: calc((100% - (2 * var(--dg-gap))) / 6);
  height: 2px; background: var(--lijn);
}
.dg-bracket::after {             /* centrale toevoer van bovenaf */
  content: ''; position: absolute; top: -1px; left: 50%; width: 2px;
  height: 2px; background: var(--lijn);
}
.dg-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--dg-gap);
}
.dg-cols .dg-col { display: flex; flex-direction: column; align-items: center; }
.dg-cols .dg-col .dg-droppipe { width: 2px; height: clamp(12px, 2vh, 20px); background: var(--lijn); }
.dg-cols .dg-node { max-width: none; border-color: var(--lijn); }
.dg-cols .dg-node::before {     /* gekleurde kop-rand per gebied */
  content: ''; position: absolute; top: -1.5px; left: -1.5px; right: -1.5px; height: 4px;
  background: var(--punt-kleur, var(--water)); border-radius: var(--radius) var(--radius) 0 0;
}
.dg-cols .dg-node { border-top-color: transparent; }
.dg-label {
  position: relative;
  width: 100%;
  font-family: var(--font-label); font-weight: 500; font-size: 0.66rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-2);
  text-align: center;
  margin: 0;
  padding: clamp(18px, 3vh, 30px) 0 clamp(10px, 1.8vh, 18px);
}
.dg-label::before,
.dg-label::after {
  content: '';
  position: absolute;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: var(--lijn);
}
.dg-label::before {
  top: 0;
  height: calc(clamp(18px, 3vh, 30px) - 0.35em);
}
.dg-label::after {
  bottom: 0;
  height: calc(clamp(10px, 1.8vh, 18px) - 0.15em);
}

@media (max-width: 740px) {
  .dg-cols { grid-template-columns: 1fr; gap: 0; }
  .dg-cols .dg-col { width: 100%; }
  .dg-bracket { display: none; }
  .dg-cols .dg-col .dg-droppipe { height: clamp(18px, 3vh, 28px); }
  .dg-cols .dg-col + .dg-col .dg-droppipe { display: block; }
}

/* ── 17 · Tijdlijn-strip ──────────────────────────────────────── */
.sectie.tijdlijn-volbreed {
  display: block;
}
.tijdlijn-volbreed .s-marge {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}
.tijdlijn-volbreed .s-marge .s-nr {
  margin: 0;
}
.tijdlijn-volbreed .s-marge .s-label {
  position: static;
}
.tijdlijn-volbreed .s-inhoud {
  max-width: none;
}
.tijdlijn-volbreed .s-inhoud > p,
.tijdlijn-volbreed details.uitklap {
  max-width: var(--maat);
}
.tijdlijn-wrap { margin: 1.5rem 0; }
.tijdlijn-legenda { display: flex; gap: 1.2rem; flex-wrap: wrap; margin-bottom: 1rem; }
.tijdlijn-legenda .leg {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-family: var(--font-display); font-weight: 500;
  font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-2);
}
.tijdlijn-legenda .bol { width: 10px; height: 10px; border-radius: 50%; }

.tijdlijn-scroller {
  overflow-x: auto;
  cursor: grab;
  border-top: 1px solid var(--lijn);
  border-bottom: 1px solid var(--lijn);
  padding: 2.2rem 0 1.6rem;
  scrollbar-width: thin;
  position: relative;
}
.tijdlijn-scroller.sleept { cursor: grabbing; user-select: none; }
.tijdlijn-spoor {
  display: flex;
  gap: clamp(1.2rem, 2.5vw, 2.4rem);
  padding: 0 var(--rand);
  width: max-content;
  position: relative;
}
.tijdlijn-spoor::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 9px;
  height: 1px;
  background: var(--lijn);
}
.tl-punt {
  position: relative;
  width: clamp(18rem, 28vw, 24rem);
  flex: none;
  padding-top: 1.6rem;
}
.tl-punt::before {
  content: '';
  position: absolute;
  top: 4px; left: 0;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--punt-kleur, var(--water));
}
.tl-punt .tl-jaar {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  line-height: 1;
  display: block;
}
.tl-beeld {
  min-height: clamp(11rem, 21vh, 15rem);
  margin: 0.8rem 0 0.75rem;
  border: 1px solid var(--lijn);
  background:
    repeating-linear-gradient(45deg,
      transparent 0 14px,
      var(--lijn-zacht) 14px 15px);
  background-color: var(--vlak);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tl-beeld span {
  border: 1px solid var(--lijn);
  background: var(--bg);
  padding: 0.45rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.tl-punt .tl-gebied {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--punt-kleur, var(--water));
  display: block;
  margin: 0.3rem 0 0.45rem;
}
.tl-punt p { font-size: 0.86rem; line-height: 1.5; color: var(--ink-2); margin: 0; }

/* gebiedskleuren */
.gebied-fleeten { --punt-kleur: var(--accent); }
.gebied-binnenalster { --punt-kleur: var(--water); }
.gebied-hafencity { --punt-kleur: #3F7D5C; }
.gebied-gedeeld { --punt-kleur: var(--ink-2); }

/* ── 18 · Kaart-integratiepunten (inleiding + softmap) ────────── */
.kaart-slot {
  border: 1px solid var(--lijn);
  background: var(--vlak);
  position: relative;
  min-height: clamp(300px, 55vh, 560px);
  display: flex;
  align-items: center;
  justify-content: center;
}
.kaart-slot .ph-label {
  background: var(--bg);
  border: 1px solid var(--lijn);
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-2);
  max-width: 75%;
  text-align: center;
  z-index: 2;
}

/* projectpuntenlijst naast/onder de kaart */
.puntenlijst { display: grid; gap: 2px; margin: 0; padding: 0; list-style: none; }
.puntenlijst button {
  appearance: none;
  width: 100%;
  text-align: left;
  border: 1px solid var(--lijn);
  background: var(--vlak);
  padding: 0.7rem 0.9rem;
  cursor: pointer;
  display: grid;
  grid-template-columns: max-content 1fr max-content;
  align-items: baseline;
  gap: 0.8rem;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.puntenlijst button:hover { border-color: var(--ink); }
.puntenlijst button.actief { background: var(--inversie-bg); border-color: var(--inversie-bg); }
.puntenlijst button.actief * { color: var(--inversie-ink) !important; }
.puntenlijst .p-nr { font-family: var(--font-mono); font-size: 0.66rem; color: var(--accent); }
.puntenlijst .p-naam { font-family: var(--font-display); font-weight: 700; font-size: 0.92rem; text-transform: uppercase; letter-spacing: 0.04em; }
.puntenlijst .p-water { font-family: var(--font-mono); font-size: 0.62rem; color: var(--ink-2); }

/* mini-fiche bij geselecteerd punt */
.punt-detail {
  border: 1px solid var(--lijn);
  border-left: 4px solid var(--water);
  background: var(--vlak);
  padding: 1rem 1.1rem;
  margin-top: 1rem;
  font-size: 0.92rem;
}
.punt-detail h3 { font-size: 1.05rem; text-transform: uppercase; margin-bottom: 0.3rem; }
.punt-detail .pd-meta { font-family: var(--font-mono); font-size: 0.66rem; color: var(--ink-2); display: block; margin-bottom: 0.5rem; }
.punt-detail p { margin: 0 0 0.6rem; }
.punt-detail .pd-media {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display); font-weight: 500;
  font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--water-diep);
  border: 1px dashed var(--lijn);
  padding: 0.35rem 0.7rem;
  margin-right: 0.5rem;
}

/* ── 18b · Inleiding-kaart: SVG-laagconventie ─────────────────── */
/* Geldt ook voor Koens echte SVG, mits dezelfde id's/klassen worden
   aangehouden (zie js/inleiding-kaart.js). */
#inleiding-kaart { display: block; width: 100%; height: auto; overflow: visible; }
#inleiding-kaart .water-vlak { fill: var(--water-licht); opacity: 0.5; transition: opacity 0.4s ease, fill 0.4s ease; }
#inleiding-kaart .land { fill: none; }
#inleiding-kaart #laag-water .water-vlak { fill: #9FC6D3; opacity: 0.52; }
#inleiding-kaart [id^="structuur-"] .water-vlak { fill: #8FBED0; opacity: 0.62; }
#inleiding-kaart [id^="structuur-"].actief .water-vlak { fill: var(--water); opacity: 0.78; }
#inleiding-kaart [id^="punt-"] { cursor: pointer; }
#inleiding-kaart .project-beeld {
  opacity: 0.68;
  filter: url(#kaart-beeld-schaduw);
  transition: opacity 0.3s ease, filter 0.3s ease;
}
#inleiding-kaart [id^="punt-"]:hover .project-beeld,
#inleiding-kaart [id^="punt-"].actief .project-beeld {
  opacity: 1;
  filter: url(#kaart-beeld-actief);
}
#inleiding-kaart [id^="punt-"] circle {
  fill: var(--bg);
  stroke: var(--ink);
  stroke-width: 1.8;
  transition: fill 0.3s ease, r 0.3s ease;
}
#inleiding-kaart .marker-stem {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.6;
  stroke-linecap: round;
}
#inleiding-kaart [id^="punt-"].actief circle { fill: var(--accent); stroke: var(--accent); }
#inleiding-kaart [id^="punt-"].actief .marker-stem { stroke: var(--accent); }
#inleiding-kaart .project-label rect {
  fill: var(--bg);
  stroke: none;
}
#inleiding-kaart [id^="punt-"].actief .project-label rect {
  fill: var(--vlak);
}
#inleiding-kaart [id^="punt-"] text {
  font-family: var(--font-label);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  fill: var(--ink);
  stroke: none;
  pointer-events: none;
  text-transform: uppercase;
}
#inleiding-kaart .project-label .label-thema {
  font-size: 5.8px;
  font-weight: 500;
  letter-spacing: 0.16em;
  fill: var(--ink-2);
}
#inleiding-kaart [id^="punt-"].actief text { fill: var(--ink); font-weight: bold; }

/* ── 19 · Onderwater-literatuur ───────────────────────────────── */
.onderwater {
  position: relative;
}
.onderwater .water-overlay {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  top: 0;
  pointer-events: none;
  z-index: 5;
  transition: opacity 0.4s ease;
  will-change: opacity, transform;
}
/* geanimeerde golf-SVG (zelfde methode als de landing): waterlichaam +
   meerdere golflagen + een lichte schuimlijn aan het oppervlak. js/onderwater.js
   tekent de paden en zet het oppervlak tussen "Op de bodem" en "de bronnen". */
.onderwater .onderwater-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
/* Bronnenlijst over de volle bladbreedte: geen margelabel meer, maar een
   sectiekop met regel; daaronder twee gelijke kolommen die de hele breedte vullen. */
.bronnen-sectie {
  padding: calc(var(--regel) * 0.9) 0;
  border-top: 1px solid var(--lijn-zacht);
}
.bronnen-kop {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: clamp(1.2rem, 3vh, 2.2rem);
}
.bronnen-kop h2 {
  font-family: var(--font-label);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0;
  white-space: nowrap;
}
.bronnen-kop .bronnen-rule { flex: 1; height: 1px; background: var(--lijn); }

.bron-lijst {
  list-style: none; margin: 0; padding: 0;
  /* twee gelijke kolommen over de volle breedte (krantenflow: alfabetisch top→bodem per kolom) */
  column-count: 2;
  column-gap: clamp(2rem, 5vw, 4.5rem);
  column-rule: 1px solid var(--lijn-zacht);
}
.bron-lijst li {
  padding: 0.9rem 0.4rem 0.9rem 0;
  border-bottom: 1px solid var(--lijn-zacht);
  font-size: 0.95rem;
  line-height: 1.6;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 1rem;
  break-inside: avoid;           /* bron niet over kolomgrens splitsen */
  scroll-margin-top: calc(var(--nav-hoogte) + 2rem);
}
.bron-lijst li .b-anker {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--accent);
  padding-top: 0.4em;
}
.bron-lijst li.uitgelicht { background: var(--bg-diep); outline: 2px solid var(--water); outline-offset: 4px; }
.bron-lijst a { word-break: break-all; font-size: 0.85em; }

/* ── 20 · Responsief ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .begrippen { grid-template-columns: repeat(2, 1fr); }
  .begrip:nth-child(even) { transform: none; }
  .hoewerkt { grid-template-columns: repeat(2, 1fr); }
  .drie-structuren { grid-template-columns: 1fr; }
  .landing-sub { grid-template-columns: 1fr; }
  .landing-kop { align-items: start; flex-wrap: wrap; }
  .landing-controls { order: 3; flex-basis: min(100%, 36rem); justify-content: flex-start; }
  .bron-lijst { column-count: 1; }
}
@media (max-width: 720px) {
  .sectie { grid-template-columns: 1fr; gap: 0.6rem; }
  .s-marge .s-label { position: static; display: inline-block; margin-bottom: 0.4rem; }
  .sectie.verschoven .s-inhoud { padding-left: 0; }
  .pagina-kop .kop-nr { display: none; }
  .pagina-kop .kop-vraag { margin-left: 0; padding-left: 0; }
  .nav-merk { display: none; }
  .fiche dl { grid-template-columns: 1fr; gap: 0.1rem 0; }
  .fiche dt { margin-top: 0.5rem; }
  .begrippen, .hoewerkt { grid-template-columns: 1fr; }
  .spine-nav { grid-template-columns: 1fr; }
  .spine-nav .volgende { grid-column: 1; }
  .landing-controls {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.38rem;
  }
  .kaart-regelaar {
    grid-template-columns: 5.2rem minmax(0, 1fr) 3.4em;
    max-width: 100%;
  }
  .kaart-fragment { box-shadow: 0 10px 30px rgba(28, 27, 24, 0.14); }
  .kaart-fragment-1 {
    left: var(--f1-left, -16vw);
    top: var(--f1-top, calc(var(--nav-hoogte) + 10rem));
    width: var(--f1-width, 58vw);
    height: var(--f1-height, 9rem);
    --kaart-bg-size: 250vw auto;
    --kaart-bg-pos: 0% 15%;
  }
  .kaart-fragment-2 {
    left: var(--f2-left, 55vw);
    top: var(--f2-top, calc(var(--nav-hoogte) + 8rem));
    width: var(--f2-width, 36vw);
    height: var(--f2-height, 7.8rem);
    --kaart-bg-size: 240vw auto;
    --kaart-bg-pos: 75% 12%;
  }
  .kaart-fragment-3 {
    left: var(--f3-left, 41vw);
    top: var(--f3-top, calc(var(--nav-hoogte) + 17.8rem));
    width: var(--f3-width, 1.9rem);
    height: var(--f3-height, 16rem);
    --kaart-bg-size: 280vw auto;
    --kaart-bg-pos: 48% 36%;
  }
  .kaart-fragment-4 {
    left: var(--f4-left, 58vw);
    top: var(--f4-top, 42vh);
    width: var(--f4-width, 54vw);
    height: var(--f4-height, 10rem);
    --kaart-bg-size: 220vw auto;
    --kaart-bg-pos: 96% 52%;
  }
  .kaart-fragment-5 {
    left: var(--f5-left, -5vw);
    top: var(--f5-top, 68vh);
    width: var(--f5-width, 42vw);
    height: var(--f5-height, 9.5rem);
    --kaart-bg-size: 260vw auto;
    --kaart-bg-pos: 8% 86%;
  }
  .kaart-fragment-6 {
    left: var(--f6-left, 56vw);
    top: var(--f6-top, calc(var(--nav-hoogte) + 20.7rem));
    width: var(--f6-width, 60vw);
    height: var(--f6-height, 11rem);
    --kaart-bg-size: 230vw auto;
    --kaart-bg-pos: 70% 58%;
  }
}
