:root{
  --navy:#124a83; --navy-2:#1a5c9e; --blue:#1765b8; --ink:#061a33;
  --text:#eef2fb; --muted:#a9b6d6; --panel:#ffffff; --panel-ink:#13203f; --panel-muted:#5c6a8a;
  --line:rgba(255,255,255,.12); --accent:#4fb3ff; --hl:rgba(255,214,0,.45);
  --bar-h:56px; --foot-h:64px;
  font-family: "Montserrat", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:var(--ink);color:var(--text)}
body{background:var(--bg,#124a83)}
button,input{font:inherit;color:inherit}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
#app{position:fixed;inset:0;display:flex;flex-direction:column}

/* topbar */
.topbar{height:var(--bar-h);display:flex;align-items:center;justify-content:space-between;padding:0 16px;gap:12px;
  background:rgba(6,26,51,.55);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:5;padding-top:env(safe-area-inset-top)}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{font-weight:800;font-style:italic;letter-spacing:-.5px;font-size:18px;background:#fff;color:var(--navy);padding:3px 8px;border-radius:6px}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-text strong{font-size:14px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text small{font-size:11px;color:var(--muted);white-space:nowrap}
.tools{display:flex;align-items:center;gap:2px}
.tool{display:flex;align-items:center;gap:7px;height:38px;padding:0 11px;border:0;border-radius:9px;background:transparent;cursor:pointer;color:var(--text);text-decoration:none;font-size:13px;font-weight:600}
.tool:hover,.tool.active{background:rgba(255,255,255,.12)}
.tool:focus-visible,.pbtn:focus-visible,.side-nav:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sep{width:1px;height:24px;background:var(--line);margin:0 6px}

/* stage */
.stage{position:relative;flex:1;display:flex;align-items:center;justify-content:center;min-height:0;padding:18px 72px}
.book-wrap{position:relative;filter:drop-shadow(0 18px 40px rgba(0,0,0,.45))}
#book{margin:0 auto}
.page{background:#fff;overflow:hidden}
.page .pimg{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover;user-select:none;-webkit-user-drag:none;pointer-events:none;background:#f3f5fa}
.page .hot{position:absolute;display:block;border-radius:3px;cursor:pointer;z-index:2}
.page .hot:hover{background:rgba(79,179,255,.18);box-shadow:0 0 0 1px rgba(79,179,255,.6)}
.page .hl{position:absolute;background:var(--hl);mix-blend-mode:multiply;border-radius:2px;pointer-events:none;z-index:1}
.page .shade{position:absolute;top:0;bottom:0;width:7%;pointer-events:none;z-index:1}
.page.--left .shade{right:0;background:linear-gradient(to left,rgba(0,0,0,.14),transparent)}
.page.--right .shade{left:0;background:linear-gradient(to right,rgba(0,0,0,.14),transparent)}
.side-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;border:1px solid var(--line);
  background:rgba(255,255,255,.08);cursor:pointer;display:grid;place-items:center;transition:background .2s,opacity .2s;z-index:3}
.side-nav:hover{background:rgba(255,255,255,.2)}
.side-nav svg{width:24px;height:24px}
.side-nav.prev{left:14px}.side-nav.next{right:14px}
.side-nav[disabled]{opacity:.25;cursor:default}
.loader{position:absolute;inset:0;display:grid;place-items:center;transition:opacity .4s}
.loader.done{opacity:0;pointer-events:none}
.spinner{width:42px;height:42px;border-radius:50%;border:3px solid rgba(255,255,255,.2);border-top-color:#fff;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* bottombar */
.bottombar{height:var(--foot-h);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding-bottom:env(safe-area-inset-bottom);z-index:4}
.pager{display:flex;align-items:center;gap:4px;background:rgba(6,26,51,.6);border:1px solid var(--line);border-radius:999px;padding:4px;backdrop-filter:blur(10px)}
.pbtn{width:36px;height:36px;border:0;border-radius:50%;background:transparent;display:grid;place-items:center;cursor:pointer;color:var(--text)}
.pbtn:hover{background:rgba(255,255,255,.14)}
.pbtn[disabled]{opacity:.3;cursor:default;background:transparent}
.pageinfo{display:flex;align-items:center;gap:6px;padding:0 6px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.pageinfo input{width:64px;height:30px;text-align:center;border:1px solid var(--line);background:rgba(255,255,255,.08);border-radius:8px;color:#fff;font-weight:600;font-size:13px}
.progress{width:min(420px,70vw);height:3px;border-radius:3px;background:rgba(255,255,255,.12);overflow:hidden}
#progressBar{height:100%;width:0;background:var(--accent);transition:width .4s}

/* panel */
.panel{position:fixed;top:var(--bar-h);bottom:0;left:0;width:min(400px,92vw);background:var(--panel);color:var(--panel-ink);z-index:20;
  transform:translateX(-102%);transition:transform .3s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;box-shadow:12px 0 40px rgba(0,0,0,.3)}
.panel.open{transform:none}
.panel-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 12px 22px;border-bottom:1px solid #e6eaf3}
.panel-head h2{margin:0;font-size:17px;font-weight:700}
.close{border:0;background:#f0f3f9;border-radius:50%;width:34px;height:34px;display:grid;place-items:center;cursor:pointer;color:var(--panel-ink)}
.close:hover{background:#e2e7f2}
.panel-body{display:none;overflow:auto;flex:1;padding:12px 14px 24px}
.panel-body.show{display:block}
.scrim{position:fixed;inset:var(--bar-h) 0 0 0;background:rgba(5,12,30,.45);opacity:0;pointer-events:none;transition:opacity .3s;z-index:15}
.scrim.show{opacity:1;pointer-events:auto}

/* toc */
.toc-ch{margin:6px 0 10px}
.toc-ch > a{width:100%;display:flex;align-items:center;justify-content:space-between;border:0;background:#f1f4fa;border-radius:10px;padding:11px 14px;cursor:pointer;font-weight:700;font-size:14px;color:var(--navy)}
.toc-ch > a:hover{background:#e4eaf6}
.toc-ch ul{list-style:none;margin:4px 0 0;padding:0}
.toc-ch li a{width:100%;display:flex;justify-content:space-between;gap:12px;text-align:left;border:0;background:none;padding:8px 14px;border-radius:8px;cursor:pointer;font-size:13px;color:var(--panel-ink)}
.toc-ch li a:hover{background:#f3f6fb}
.toc-ch .pg{color:var(--panel-muted);font-variant-numeric:tabular-nums;font-weight:600;font-size:12px;flex:none}
.toc-ch.current > a{background:#d6e4f7;box-shadow:inset 4px 0 0 var(--blue)}
.toc-ch li.current a{background:#e9f1fc;color:var(--blue);font-weight:700;box-shadow:inset 4px 0 0 var(--blue)}
.toc-ch li.current .pg{color:var(--blue)}

/* thumbs */
.thumbgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 10px}
.thumb{border:0;background:none;padding:0;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:5px;color:var(--panel-muted);font-size:12px;font-weight:600}
.thumb .spread{display:flex;box-shadow:0 2px 10px rgba(15,42,107,.18);border-radius:3px;overflow:hidden;outline:2px solid transparent;outline-offset:2px;transition:outline-color .15s}
.thumb img{width:68px;height:auto;display:block;background:#eef1f7}
.thumb:hover .spread{outline-color:#b9c7e6}
.thumb.current .spread{outline-color:var(--blue)}
.thumb.current{color:var(--blue)}

/* search */
.searchbox{display:flex;align-items:center;gap:8px;border:1.5px solid #d7deec;border-radius:12px;padding:0 12px;background:#fff;position:sticky;top:0}
.searchbox:focus-within{border-color:var(--blue)}
.searchbox svg{color:var(--panel-muted)}
.searchbox input{flex:1;border:0;outline:0;height:44px;font-size:15px;color:var(--panel-ink);background:transparent}
.search-meta{font-size:12px;color:var(--panel-muted);margin:10px 4px}
.results{list-style:none;margin:0;padding:0}
.results li button{display:flex;gap:12px;width:100%;text-align:left;border:0;background:none;border-radius:10px;padding:9px 8px;cursor:pointer;color:var(--panel-ink)}
.results li button:hover{background:#f3f6fb}
.results img{width:44px;height:auto;border-radius:2px;box-shadow:0 1px 4px rgba(0,0,0,.15);flex:none;align-self:flex-start}
.results .rp{font-size:12px;font-weight:700;color:var(--blue);margin-bottom:3px}
.results .rs{font-size:13px;line-height:1.4;color:#334063}
.results mark{background:#ffe266;color:inherit;border-radius:2px;padding:0 1px}

/* zoom */
.zoom{position:absolute;inset:0;z-index:4;background:rgba(5,14,32,.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:none;overflow:hidden;touch-action:none;cursor:grab}
.zoom.open{display:block}
.zoom.dragging{cursor:grabbing}
.zoom-canvas{position:absolute;left:0;top:0;transform-origin:0 0;display:flex;gap:0;will-change:transform}
.zoom-canvas img{display:block;user-select:none;-webkit-user-drag:none;background:#fff}
.zoom-ui{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);display:flex;align-items:center;gap:4px;
  background:rgba(6,26,51,.82);border:1px solid var(--line);border-radius:999px;padding:4px;backdrop-filter:blur(10px)}
#zLevel{min-width:54px;text-align:center;font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}

.toast{position:fixed;left:50%;top:calc(var(--bar-h) + 14px);transform:translate(-50%,-10px);background:#fff;color:var(--panel-ink);padding:10px 16px;border-radius:10px;
  font-size:13px;font-weight:600;box-shadow:0 8px 24px rgba(0,0,0,.3);opacity:0;pointer-events:none;transition:all .25s;z-index:40}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width: 1280px){
  .tool span{display:none}
  .tool{padding:0 9px}
}
@media (max-width: 640px){
  :root{--bar-h:52px;--foot-h:60px}
  .stage{padding:10px 8px}
  .side-nav{display:none}
  .brand-text{display:none}
  .sep,#btnFull{display:none}
  .tools{gap:0}
  .tool{padding:0 7px}
  .pbtn#btnFirst,.pbtn#btnLast{display:none}
}
@media (max-width: 380px){ .brand-text{display:none} }
@media (prefers-reduced-motion: reduce){ .panel,.scrim,.toast{transition:none} }

/* paneel naast het boek op brede schermen */
.stage,.bottombar{transition:margin-left .3s cubic-bezier(.2,.8,.2,1)}
#app.docked .stage,#app.docked .bottombar{margin-left:min(400px,92vw)}
#app.docked .panel{box-shadow:none;border-right:1px solid #dfe5f1}
#app.notrans .stage,#app.notrans .bottombar,#app.notrans .panel{transition:none}

/* taalkeuze */
.lang{position:relative;display:flex;align-items:center;gap:6px;height:38px;padding:0 8px 0 11px;border-radius:9px;cursor:pointer;color:var(--text)}
.lang:hover{background:rgba(255,255,255,.12)}
.lang:focus-within{outline:2px solid var(--accent);outline-offset:2px}
.lang select{appearance:none;-webkit-appearance:none;border:0;background:transparent;color:inherit;font-size:13px;font-weight:700;cursor:pointer;padding:0 14px 0 0;outline:0;
  background-image:linear-gradient(45deg,transparent 50%,currentColor 50%),linear-gradient(135deg,currentColor 50%,transparent 50%);
  background-position:right 4px center,right 0 center;background-size:4px 4px;background-repeat:no-repeat}
.lang select option{color:#13203f}
@media (max-width: 640px){ .lang{padding:0 4px 0 7px} .lang svg{display:none} }

/* tekstlaag (selecteren en kopiëren) */
.page,.zpage{container-type:size}
.tl{position:absolute;inset:0;z-index:1;pointer-events:none;user-select:none;-webkit-user-select:none}
.tl span{position:absolute;white-space:pre;color:transparent;line-height:1;transform-origin:0 0;font-family:Arial,Helvetica,sans-serif;pointer-events:none}

.select-mode .tl{user-select:text;-webkit-user-select:text;pointer-events:auto;cursor:text}
.select-mode .tl span{pointer-events:auto;cursor:text}
.tl ::selection{background:rgba(23,101,184,.35);color:transparent}
.zpage{position:relative;flex:none}
.zpage img{width:100%;height:100%}
.select-mode .zoom{cursor:default}
/* tekst voor zoekmachines en schermlezers */
.seo{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:normal}

.toc-ch a,.thumb{text-decoration:none}

/* logo */
.brand-logo{height:32px;width:auto;display:block;flex:none}
.brand-text{border-left:1px solid var(--line);padding-left:12px;margin-left:2px}
.brand-text strong{font-size:13px;font-weight:600;color:var(--text)}
@media (max-width: 640px){ .brand-logo{height:26px} }

/* inhoudsopgave: tweede niveau */
.toc-ch li.l2 a{padding-left:30px;font-size:12.5px;color:#4a587a}
.toc-ch li.l2.current a{color:var(--blue)}
.toc-ch > a:only-child{margin-bottom:0}
/* touch: veegbediening zelf afhandelen */
#book.stf__parent{touch-action:none}
.select-mode #book.stf__parent{touch-action:auto}

.brand-logo.badge{background:#fff;border-radius:8px;padding:3px 8px;height:34px;box-sizing:border-box;height:36px}
@media (max-width: 640px){ .brand-logo.badge{height:30px;padding:2px 6px} }

.loader-fail{display:none;max-width:320px;text-align:center;font-size:14px;line-height:1.5;color:var(--text);margin:0}
.loader-fail a{color:#fff;font-weight:700}
.loader.failed .spinner{display:none}
.loader.failed .loader-fail{display:block}