html, body { height: 100%; overflow: hidden; }
/* lay-out: links de hoofdkolom (bovenbalk · figuur · onderstrook), rechts het uitlegpaneel */
.app { position: fixed; inset: 0; display: grid; grid-template-columns: minmax(0, 1fr) 380px; grid-template-rows: minmax(0, 1fr); }
.app.noside { grid-template-columns: minmax(0, 1fr) 0; }
.app.noside .side { display: none; }
.main { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.stage { position: relative; flex: 1; min-height: 0; overflow: hidden; background: radial-gradient(1200px 800px at 50% 45%, #0e1730 0%, var(--bg) 70%); }
.layer { position: absolute; inset: 0; }
.layer svg { width: 100%; height: 100%; display: block; }
.layer .v3d { position: absolute; inset: 0; }
[data-node] { cursor: pointer; transition: filter .2s; }
[data-node]:hover, [data-node].hl { filter: drop-shadow(0 0 6px rgba(124,196,255,.95)) drop-shadow(0 0 16px rgba(124,196,255,.5)); }

.btn { all: unset; cursor: pointer; font-size: 12.5px; padding: 7px 11px; border-radius: 9px; background: rgba(9,14,28,.78);
  border: 1px solid var(--line); color: var(--muted); backdrop-filter: blur(6px); display: inline-flex; gap: 6px; align-items: center; white-space: nowrap; }
.btn:hover, .btn[aria-pressed=true] { color: var(--text); border-color: rgba(124,196,255,.5); }
.btn:focus-visible, .tbtn:focus-visible, .sbtn:focus-visible, .chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn em { font-style: normal; }
.btn.icon span { font-size: 15px; line-height: 1; }

/* bovenbalk (boven de figuur, niet erover) */
.topbar { flex: none; display: flex; flex-direction: column; gap: 6px; padding: 8px 12px 6px; background: #080d1a; border-bottom: 1px solid var(--line); z-index: 5; }
.row1 { display: flex; gap: 8px; align-items: center; min-width: 0; }
.row2 { display: flex; flex-wrap: wrap; row-gap: 4px; gap: 10px; align-items: center; min-width: 0; }
.row2 .scalebox { flex-shrink: 0; max-width: 100%; }   /* past het niet naast de hoofdstukbalk, dan schuift die naar een eigen regel */
.navbtns { display: flex; gap: 6px; flex: none; }
.crumbs { display: flex; flex-wrap: nowrap; gap: 4px; align-items: center; font-size: 13px; overflow: hidden; min-width: 0; flex: 1; white-space: nowrap; }
.crumbs button { all: unset; cursor: pointer; color: var(--muted); }
.crumbs button:hover { color: var(--text); }
.crumbs b { font-weight: 600; }
.crumbs span { color: #4a5570; }
.tools { margin-left: auto; display: flex; gap: 6px; flex: none; }
@media (max-width: 1250px) { .btn em { display: none; } .btn .keep { display: inline; } }

/* verhaallijn */
.story { margin-left: auto; display: flex; align-items: center; gap: 6px; flex: none;
  background: rgba(9,14,28,.8); border: 1px solid rgba(124,196,255,.25); border-radius: 999px; padding: 3px; }
.sinfo { font-size: 12.5px; padding: 0 8px; color: var(--muted); white-space: nowrap; }
.sinfo b { color: var(--text); font-weight: 600; }
.sinfo .dots { display: flex; gap: 3px; margin-top: 3px; justify-content: center; }
.sinfo .dots i { width: 7px; height: 3px; border-radius: 2px; background: #2a3550; }
.sinfo .dots i.on { background: var(--accent); }
.sinfo .dots i.cur { background: #ffc247; width: 12px; }
.sinfo button.back { all: unset; cursor: pointer; color: #ffc247; }
.sbtn { all: unset; cursor: pointer; height: 28px; display: inline-flex; align-items: center; gap: 6px; padding: 0 11px; border-radius: 999px; color: var(--text); background: rgba(124,196,255,.12); font-size: 12.5px; white-space: nowrap; }
.sbtn .arr { font-size: 15px; line-height: 1; }
.sbtn .nm { max-width: 130px; overflow: hidden; text-overflow: ellipsis; }
.sbtn .nm:empty { display: none; }
.sbtn.back { color: #ffc247; }
.sbtn.back .nm { max-width: none; }   /* zijpad: "↩ terug naar het verhaal" volledig tonen */
.sbtn:hover { background: rgba(124,196,255,.25); }
.sbtn:disabled { opacity: .25; cursor: default; }

/* labels */
.labels { position: absolute; inset: 0; pointer-events: none; transition: opacity .25s; z-index: 3; }
.labels.hide { opacity: 0; }
.lbl { position: absolute; transform: translate(-50%, -100%); pointer-events: auto; cursor: pointer; white-space: nowrap;
  font-size: 12px; font-weight: 500; padding: 4px 9px 4px 8px; border-radius: 999px; background: rgba(9,14,28,.84);
  border: 1px solid rgba(124,196,255,.35); color: var(--text); display: flex; gap: 6px; align-items: center; backdrop-filter: blur(4px); }
.lbl::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--dot, #7cc4ff); }
.lbl.leaf { border-style: dashed; border-color: rgba(147,160,187,.4); }
.lbl.ext::after { content: "↗"; color: var(--accent); font-size: 11px; }
.lbl:hover { border-color: var(--accent); background: rgba(20,32,60,.95); }

/* onderstrook: uitleg + bediening als videospeler (onder de figuur, niet erover) */
.dock { flex: none; background: #080d1a; border-top: 1px solid var(--line); padding: 8px 14px 8px; display: flex; flex-direction: column; gap: 6px; z-index: 5; }
.caption { min-width: 0; min-height: 44px; }
.caption .ct { font-weight: 600; font-size: 16px; color: var(--text); }
.caption .cx { font-size: 14.5px; color: #c3cde2; margin-top: 2px; line-height: 1.45; }
.caption.mini .cx { display: none; }
.prow { display: flex; gap: 8px; align-items: center; }
.tbtn { all: unset; cursor: pointer; flex: none; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; color: var(--text); font-size: 18px; border: 1px solid var(--line); box-sizing: border-box; }
.tbtn:hover { background: rgba(124,196,255,.15); }
.tbtn:disabled { opacity: .3; cursor: default; background: none; }
.tbtn.play { width: 44px; height: 44px; border: 0; background: var(--accent); color: #0a1224; font-size: 17px; }
.tbtn.play:hover { filter: brightness(1.12); background: var(--accent); }
.tbtn:focus-visible, .seg:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
/* ⏸-modus en stap klaar: › knippert zacht */
.tbtn.pulse { background: rgba(124,196,255,.28); border-color: var(--accent); animation: ring 1.6s ease-out infinite; }
@keyframes ring { 0% { box-shadow: 0 0 0 0 rgba(124,196,255,.55); } 100% { box-shadow: 0 0 0 10px rgba(124,196,255,0); } }
@media (prefers-reduced-motion: reduce) { .tbtn.pulse { animation: none; } }
/* tijdlijn in stukken: één stuk per stap; de naam van een stap verschijnt erboven als je erover gaat
 * (de naam van de huidige stap staat al als titel van de ondertitel) */
.track { flex: 1; min-width: 0; display: flex; gap: 3px; align-items: center; }
.seg { all: unset; cursor: pointer; flex: 1 1 0; min-width: 0; padding: 12px 0; position: relative; }
.seg .sl { display: none; position: absolute; bottom: calc(100% - 4px); left: 0; font-size: 12px; color: var(--text); white-space: nowrap; background: var(--bg-2); border: 1px solid var(--line); border-radius: 7px; padding: 3px 8px; z-index: 6; pointer-events: none; }
.seg:nth-last-child(-n+3):not(:nth-child(-n+3)) .sl { left: auto; right: 0; }
.seg:hover .sl, .seg:focus-visible .sl { display: block; }
.seg i { position: relative; display: block; height: 7px; border-radius: 4px; background: #1b2640; overflow: hidden; }
.seg.cur i { height: 9px; box-shadow: 0 0 0 1px rgba(124,196,255,.5); }
.seg:hover i { background: #2a3a5c; }
.seg i em, .seg i s { position: absolute; left: 0; top: 0; bottom: 0; width: 0; text-decoration: none; }
.seg i s { background: rgba(124,196,255,.38); }                /* leespauze */
.seg i em { background: linear-gradient(90deg, #4f8ff7, #7cc4ff); }
.seg.done i em { background: #3f6db8; }
.srow { display: flex; justify-content: space-between; gap: 10px; font: 500 11.5px var(--mono); color: var(--muted); padding-left: 2px; }
.stepno { white-space: nowrap; }
/* ⚙: zelden nodige instellingen (snelheid) */
.gear { position: relative; flex: none; }
.gear > summary { list-style: none; font-size: 16px; }
.gear > summary::-webkit-details-marker { display: none; }
.gearbox { position: absolute; right: 0; bottom: calc(100% + 8px); background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); white-space: nowrap; box-shadow: 0 10px 30px rgba(0,0,0,.4); z-index: 20; }
#speed { background: #0d1426; color: var(--text); border: 1px solid var(--line); border-radius: 7px; font: 500 12px var(--mono); padding: 3px 4px; }

.scalebox { display: flex; gap: 16px; align-items: center; font-size: 12.5px; color: var(--muted); min-width: 0; overflow: hidden; white-space: nowrap; }
.scalebox b { color: var(--text); font-weight: 600; }
.scalebox > span { cursor: help; }
.zoomlvl { display: inline-flex; gap: 3px; }
.zoomlvl i { width: 16px; height: 5px; border-radius: 2px; background: #243049; }
.zoomlvl i.on { background: var(--accent); }

.nextch { display: none; flex: none; }
.nextch.show { display: block; }
.nextch button { all: unset; cursor: pointer; background: var(--accent); color: #0a1224; font-weight: 500; font-size: 14px; padding: 9px 16px; border-radius: 999px; white-space: nowrap; max-width: 340px; overflow: hidden; text-overflow: ellipsis; }
.nextch button b { font-weight: 700; }
.nextch button:hover { filter: brightness(1.12); }
.nextch button:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* zijpaneel */
.side { background: var(--bg-2); border-left: 1px solid var(--line); overflow-y: auto; padding: 18px 18px 40px; }
.side .kind { font: 500 10.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.side h1 { font-size: 22px; margin: 6px 0 2px; letter-spacing: -.01em; }
.side .en { color: var(--muted); font-style: italic; font-size: 13px; }
.side p { font-size: 14px; line-height: 1.6; color: #c9d2e4; margin: 10px 0; }
.status { display: inline-block; font: 500 10px var(--mono); padding: 3px 6px; border-radius: 5px; background: rgba(255,138,61,.13); color: #ff8a3d; margin-left: 6px; vertical-align: 3px; }
.status.ok { background: rgba(127,220,106,.13); color: #7fdc6a; }
.sec { border-top: 1px solid var(--line); margin-top: 14px; padding-top: 12px; }
.sec > summary { cursor: pointer; list-style: none; font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.sec > summary::-webkit-details-marker { display: none; }
.sec > summary::after { content: "▾"; margin-left: auto; transition: transform .2s; }
.sec:not([open]) > summary::after { transform: rotate(-90deg); }
.sec ol { margin: 10px 0 0; padding-left: 20px; font-size: 13.5px; line-height: 1.55; color: #c9d2e4; }
.sec ol li { margin-bottom: 5px; }
.facts { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin-top: 10px; font-size: 13px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; color: var(--text); font-family: var(--mono); font-size: 12.5px; }
.src { margin: 10px 0 0; padding-left: 18px; font-size: 12.5px; color: var(--muted); line-height: 1.5; }
.src a { color: var(--accent); }
.chip { all: unset; cursor: pointer; display: inline-block; font-size: 12.5px; padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line); margin: 8px 5px 0 0; }
.chip:hover { border-color: var(--accent); }
.chip.next { border-color: rgba(255,138,61,.5); }
.chip.rel { border-style: dashed; }
.chip.up { border-color: rgba(127,220,106,.45); }
.chip.has::after { content: " ▸"; color: var(--accent); }
.simp { margin-top: 16px; padding: 12px; border-radius: 10px; border: 1px dashed rgba(255,194,71,.35); font-size: 12.5px; color: var(--muted); line-height: 1.55; }
.simp b { color: #ffc247; }
.legend { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; font-size: 12px; color: var(--muted); margin-top: 10px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.stepsList { margin: 10px 0 0; padding: 0; list-style: none; counter-reset: s; }
.stepsList li { counter-increment: s; font-size: 13px; padding: 6px 8px 6px 30px; border-radius: 8px; position: relative; cursor: pointer; color: #c9d2e4; }
.stepsList li::before { content: counter(s); position: absolute; left: 7px; top: 6px; width: 17px; height: 17px; border-radius: 50%; background: #1b2640; color: var(--muted); font: 600 10px var(--mono); display: grid; place-items: center; }
.stepsList li:hover { background: rgba(124,196,255,.07); }
.stepsList li.cur { background: rgba(124,196,255,.13); color: var(--text); }
.stepsList li.cur::before { background: var(--accent); color: #0a1224; }

/* overlays */
.overlay { position: absolute; inset: 0; z-index: 10; display: grid; place-items: center; background: rgba(4,7,15,.62); backdrop-filter: blur(3px); opacity: 0; pointer-events: none; transition: opacity .25s; }
.overlay.show { opacity: 1; pointer-events: auto; }
.cardbox { width: min(560px, 92%); max-height: 85%; overflow: auto; background: var(--bg-2); border: 1px solid var(--line); border-radius: 16px; padding: 22px; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.mapbox { width: min(1180px, 96%); max-height: 90%; overflow: auto; background: var(--bg-2); border: 1px solid var(--line); border-radius: 16px; padding: 18px 18px 22px; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.mapbox h2 { margin: 0 0 4px; font-size: 20px; }
.mapbox .sub { color: var(--muted); font-size: 13px; margin: 0 0 12px; }
.linehd { font: 600 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 10px 0 6px; }
.linehd.cur { color: #ffc247; }
.linehd span { text-transform: none; letter-spacing: 0; font-weight: 500; }
.storyrow { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.storyrow button { all: unset; cursor: pointer; font-size: 12px; padding: 5px 9px; border-radius: 8px; border: 1px solid var(--line); color: var(--muted); }
.storyrow button b { color: var(--accent); font-family: var(--mono); margin-right: 5px; }
.storyrow button.cur { border-color: #ffc247; color: var(--text); background: rgba(255,194,71,.1); }
.storyrow button:hover { border-color: var(--accent); color: var(--text); }
.mgrid { display: grid; grid-template-columns: 104px repeat(7, minmax(120px, 1fr)); min-width: 1000px; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.mgrid .hd { background: #0f1830; font-size: 11.5px; font-weight: 600; padding: 8px 7px; border-left: 1px solid var(--line); }
.mgrid .rh { font-size: 11.5px; font-weight: 600; padding: 8px 7px; border-top: 1px solid var(--line); color: var(--muted); }
.mgrid .cell { border-top: 1px solid var(--line); border-left: 1px solid var(--line); padding: 5px; display: flex; flex-direction: column; gap: 4px; }
.mgrid .n { all: unset; cursor: pointer; font-size: 11.5px; line-height: 1.25; padding: 5px 6px 5px 8px; border-radius: 6px; background: rgba(255,255,255,.04); position: relative; }
.mgrid .n::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 3px; border-radius: 3px; background: var(--c); }
.mgrid .n:hover { background: rgba(255,255,255,.1); }
.mgrid .n.here { outline: 2px solid #ffc247; background: rgba(255,194,71,.14); }
.mgrid .n.story::after { content: attr(data-ch); position: absolute; right: 4px; top: 3px; font: 600 9px var(--mono); color: var(--accent); }
.mgrid .n.noscene { opacity: .55; }
.close { float: right; }

/* 3D-scènes */
.h3wrap { position: absolute; left: 12px; top: 12px; display: flex; flex-direction: column; gap: 6px; z-index: 3; max-width: 240px; }
.h3 { all: unset; cursor: pointer; font-size: 12.5px; padding: 6px 10px 6px 22px; border-radius: 9px; background: rgba(9,14,28,.82); border: 1px solid var(--line); color: var(--text); position: relative; }
.h3::before { content: ""; position: absolute; left: 9px; top: 50%; width: 7px; height: 7px; margin-top: -3.5px; border-radius: 50%; background: var(--c); }
.h3:hover { border-color: var(--accent); }
.load3d { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 14px; pointer-events: none; }
.pdbtag { position: absolute; right: 12px; top: 12px; z-index: 3; font: 500 11px var(--mono); color: var(--muted); text-decoration: none; background: rgba(9,14,28,.8); border: 1px solid var(--line); padding: 5px 8px; border-radius: 7px; }
.pdbtag:hover { color: var(--accent); }

.toast { position: fixed; left: 50%; top: 100px; transform: translateX(-50%); z-index: 50; padding: 10px 18px; border-radius: 12px; background: rgba(40,14,20,.95); border: 1px solid #ff6b6b; color: #ffd9d9; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .3s; }
.toast.show { opacity: 1; }

.sheetclose { display: none; float: right; }
/* ---------- smalle schermen (tablet/gsm) ---------- */
@media (max-width: 1000px) {
  .app { grid-template-columns: minmax(0, 1fr); }
  /* uitleg als uitschuifpaneel van onderaan */
  .side { position: fixed; left: 0; right: 0; bottom: 0; height: 72vh; z-index: 30; border-left: 0; border-top: 1px solid var(--line); border-radius: 16px 16px 0 0;
    transform: translateY(102%); transition: transform .3s; box-shadow: 0 -20px 60px rgba(0,0,0,.5); }
  .app.sideopen .side { transform: none; }
  .app.noside .side { display: block; }
  .sheetclose { display: inline-flex; }
  .row2 { flex-wrap: wrap; row-gap: 4px; }
  .story { margin-left: 0; width: 100%; box-sizing: border-box; justify-content: space-between; }
  .story .sbtn { min-width: 0; flex: 0 1 auto; }
  .story .sinfo { flex: none; padding: 0 4px; }
}
@media (max-width: 700px) {
  .topbar { padding: 6px 8px 5px; gap: 5px; }
  .crumbs { font-size: 12px; }
  .btn { padding: 6px 8px; }
  .scalebox { font-size: 11.5px; gap: 4px 10px; white-space: normal; flex-wrap: wrap; flex-basis: 100%; }
  #bLabels { display: none; }
  .tools { gap: 4px; }
  .navbtns { gap: 4px; }
  .zoomlvl { display: none; }
  .sinfo .dots { display: none; }
  .dock { padding: 6px 8px 8px; }
  .prow { flex-wrap: wrap; gap: 6px; }
  .nextch { order: 5; flex-basis: 100%; }
  .nextch button { display: block; text-align: center; max-width: none; }
  .caption .ct { font-size: 15px; }
  .caption .cx { font-size: 13.5px; }
  .sbtn .nm { max-width: none; }
  .sinfo { font-size: 12px; }
  .lbl { font-size: 11px; padding: 3px 7px 3px 6px; }
  .h3 { font-size: 11.5px; padding: 5px 8px 5px 20px; }
}

/* laadmelding bij het openen (tot de eerste scène getekend is) */
.boot { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 14px; color: var(--muted); font-size: 15px; text-align: center; z-index: 6; transition: opacity .4s; }
.boot i { width: 34px; height: 34px; border-radius: 50%; border: 3px solid rgba(124,196,255,.2); border-top-color: var(--accent); animation: spin 1s linear infinite; }
.boot small { font-size: 12px; opacity: .7; }
.boot.gone { opacity: 0; pointer-events: none; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .boot i { animation: none; } }

/* volgend hoofdstuk: de knop vult zich tijdens de leespauze */
.nextch button { background-image: linear-gradient(90deg, rgba(255,255,255,.4) var(--fill, 0%), transparent var(--fill, 0%)); }

/* uitlegpaneel kort laten oplichten (klik op de structuur van de huidige scène) */
.side.flash { animation: sideflash 1.2s ease-out; }
@keyframes sideflash { 0% { box-shadow: inset 0 0 0 3px var(--accent); } 100% { box-shadow: inset 0 0 0 0 transparent; } }
@media (prefers-reduced-motion: reduce) { .side.flash { animation: none; } }

/* "In het kort" bovenaan het uitlegpaneel */
.side .kort { margin: 12px 0 4px; padding: 12px 14px; border-radius: 12px; background: rgba(124,196,255,.08); border: 1px solid rgba(124,196,255,.25); font-size: 15px; line-height: 1.6; color: var(--text); }
.side .kort b { display: block; font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 4px; }

/* vaktermen in "In het kort": aantikken → uitleg van één zin */
.term { all: unset; cursor: help; color: inherit; border-bottom: 2px dotted var(--accent); }
.term:hover, .term:focus-visible { color: var(--accent); }
.term:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.gloss { margin: 8px 0 0; padding: 9px 12px; border-radius: 10px; background: rgba(124,196,255,.12); border: 1px solid rgba(124,196,255,.35); font-size: 13.5px; line-height: 1.5; color: var(--text); }
.gloss b { color: var(--accent); font-weight: 600; }
/* "Voor wie meer wil": de diepere uitleg in één dichtgeklapte laag */
.more { margin-top: 16px; border: 1px solid var(--line); border-radius: 12px; padding: 0 12px; }
.more > summary { cursor: pointer; list-style: none; padding: 11px 0; font-size: 14px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 8px; }
.more > summary::-webkit-details-marker { display: none; }
.more > summary::after { content: "▾"; margin-left: auto; color: var(--muted); transition: transform .2s; }
.more:not([open]) > summary::after { transform: rotate(-90deg); }
.more .morebody { padding-bottom: 12px; }
.more .morebody > .sec:first-child { margin-top: 0; }