:root {
  --navy:#1D2646;
  --blue:#BAE7EC;
  --lilac:#DEBEE7;
  --teal:#2E9CB0;
  --purple:#6A5CB0;
  --paper:#fff;
  --toolbar-h:64px;
  --shadow:0 18px 60px rgba(29,38,70,.24);
}
*{box-sizing:border-box}
html,body{width:100%;height:100%;margin:0;overflow:hidden;background:#edf3f4;color:var(--navy);font-family:Inter,Arial,sans-serif}
button,input{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
.app{width:100%;height:100%;position:relative;display:grid;grid-template-rows:var(--toolbar-h) 1fr;background:radial-gradient(circle at 50% 42%,#fff 0,#edf3f4 62%,#dde9eb 100%)}
.toolbar{height:var(--toolbar-h);display:grid;grid-template-columns:minmax(220px,1fr) auto minmax(220px,1fr);align-items:center;gap:18px;padding:0 18px;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(29,38,70,.10);box-shadow:0 4px 18px rgba(29,38,70,.08);z-index:40}
.brand-lockup{display:flex;align-items:center;gap:12px;min-width:0;font-weight:700;letter-spacing:.01em}
.brand-lockup img{width:78px;height:40px;object-fit:cover;object-position:left center}
.brand-lockup span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toolbar-center,.toolbar-actions{display:flex;align-items:center;gap:7px}.toolbar-actions{justify-content:flex-end}
.icon-button,.close-button{width:38px;height:38px;border:0;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;background:transparent;color:var(--navy);font-size:24px;line-height:1;cursor:pointer;text-decoration:none;transition:.18s ease}
.icon-button:hover,.close-button:hover{background:var(--blue);transform:translateY(-1px)}
.icon-button:disabled{opacity:.35;cursor:not-allowed;transform:none;background:transparent}
.download{font-size:22px}
.page-control{display:flex;align-items:center;gap:6px;padding:5px 10px;border-radius:10px;background:#f3f6f7;font-size:14px;font-weight:650}
.page-control input{width:44px;border:0;background:transparent;text-align:right;color:var(--navy);outline:none;font-weight:750}
.viewer{position:relative;min-width:0;min-height:0;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:6px 58px 8px}
.book-stage{transform-origin:center center;transition:transform .18s ease;filter:drop-shadow(0 20px 35px rgba(29,38,70,.18));display:flex;align-items:center;justify-content:center}
.flipbook{margin:auto}
.page{position:relative;background:#fff;overflow:hidden}
.page[data-density="hard"]{background:#fff}
.pdf-canvas,.page-image{display:block;width:100%;height:100%;object-fit:fill;background:#fff}
.annotation-layer{position:absolute;inset:0;pointer-events:none}
.annotation-link{position:absolute;pointer-events:auto;border-radius:3px;cursor:pointer;background:rgba(46,156,176,0);outline:1px solid transparent;transition:.15s ease}
.annotation-link:hover,.annotation-link:focus-visible{background:rgba(186,231,236,.25);outline-color:rgba(46,156,176,.55)}
.page-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#fff,#f7fbfc);color:rgba(29,38,70,.35);font-weight:700}
.page-placeholder::after{content:"spiekr";font-family:Georgia,serif;font-size:38px}
.edge-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:84px;border:0;border-radius:16px;background:rgba(255,255,255,.86);box-shadow:0 10px 30px rgba(29,38,70,.14);font-size:42px;color:var(--navy);cursor:pointer;z-index:8;transition:.18s ease}
.edge-nav:hover{background:var(--blue)}.edge-prev{left:15px}.edge-next{right:15px}
.side-panel{position:absolute;left:0;top:var(--toolbar-h);bottom:0;width:min(420px,90vw);background:#fff;z-index:32;box-shadow:14px 0 45px rgba(29,38,70,.22);transform:translateX(-105%);transition:transform .25s ease;display:flex;flex-direction:column}
.side-panel.open{transform:translateX(0)}
.panel-header{padding:23px 22px 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(29,38,70,.1)}
.panel-header h2{margin:0;font-family:Georgia,serif;font-size:28px}.close-button{font-size:29px}
.panel-content{padding:16px 16px 28px;overflow:auto;flex:1}
.toc-list{list-style:none;margin:0;padding:0}.toc-list li+li{margin-top:8px}
.toc-link{width:100%;border:0;border-radius:14px;padding:14px 15px;display:grid;grid-template-columns:1fr 42px;gap:12px;align-items:center;text-align:left;background:#f4f8f9;color:var(--navy);font-weight:720;cursor:pointer;transition:.18s ease}
.toc-link:hover{background:var(--blue);transform:translateX(3px)}.toc-page{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--purple);color:#fff}
.panel-backdrop{position:absolute;inset:var(--toolbar-h) 0 0;background:rgba(29,38,70,.28);backdrop-filter:blur(2px);z-index:30}
.search-box{display:grid;grid-template-columns:1fr 34px;align-items:center;border:2px solid var(--blue);border-radius:13px;overflow:hidden;background:#fff}
.search-box input{width:100%;border:0;padding:12px 14px;outline:none;color:var(--navy)}.search-box button{height:100%;border:0;background:transparent;color:var(--navy);font-size:21px;cursor:pointer}
.search-status{font-size:13px;color:#617078;margin:12px 2px}.search-results{display:grid;gap:9px}
.search-result{border:0;border-radius:13px;padding:12px 13px;background:#f4f7f8;text-align:left;color:var(--navy);cursor:pointer;line-height:1.4}.search-result:hover{background:var(--blue)}
.search-result strong{display:block;margin-bottom:4px}.search-result mark{background:var(--lilac);color:inherit;padding:0 1px}
.loading-screen{position:absolute;inset:0;z-index:100;display:grid;place-items:center;background:linear-gradient(145deg,#fff,#edf6f7);transition:opacity .35s ease,visibility .35s ease}
.loading-screen.hidden{opacity:0;visibility:hidden}.loading-card{width:min(390px,84vw);text-align:center}.loading-card img{width:240px;max-width:80%;height:auto;margin-bottom:28px}
.progress-track{height:8px;border-radius:999px;background:#dfe9eb;overflow:hidden}.progress-bar{width:5%;height:100%;background:linear-gradient(90deg,var(--teal),var(--purple));border-radius:inherit;transition:width .25s ease}.loading-card p{font-weight:700}
.error-box{position:absolute;z-index:110;left:50%;top:50%;transform:translate(-50%,-50%);width:min(440px,88vw);padding:24px;border-radius:18px;background:#fff;box-shadow:var(--shadow);text-align:center}.error-box strong,.error-box span{display:block;margin-bottom:12px}.error-box button{border:0;border-radius:10px;background:var(--navy);color:#fff;padding:11px 18px;cursor:pointer}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){:root{--toolbar-h:58px}.toolbar{grid-template-columns:auto 1fr auto;padding:0 8px;gap:6px}.brand-lockup span{display:none}.brand-lockup img{width:68px;height:34px}.toolbar-center{justify-content:center}.toolbar-actions .icon-button:nth-child(2),.toolbar-actions .icon-button:nth-child(3),.download{display:none}.viewer{padding:12px 42px 18px}.edge-nav{width:36px;height:66px;border-radius:12px}.edge-prev{left:3px}.edge-next{right:3px}}
@media(max-width:560px){.toolbar{grid-template-columns:38px 1fr auto}.brand-lockup{display:none}.toolbar-actions{gap:2px}.page-control{padding:4px 6px}.viewer{padding-left:31px;padding-right:31px}.icon-button{width:35px;height:35px}.toolbar-actions #fullscreenButton{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.book-stage{transition:none}}

.fullscreen-prompt{position:absolute;inset:0;z-index:95;display:grid;place-items:center;padding:24px;background:rgba(29,38,70,.48);backdrop-filter:blur(7px);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
.fullscreen-prompt.visible{opacity:1;visibility:visible}
.fullscreen-prompt.hidden{display:none}
.fullscreen-prompt-card{width:min(460px,92vw);padding:30px 30px 24px;border-radius:24px;background:#fff;box-shadow:0 24px 80px rgba(29,38,70,.32);text-align:center}
.fullscreen-prompt-card img{width:170px;height:auto;margin-bottom:12px}
.fullscreen-prompt-card h2{margin:4px 0 10px;font-family:Georgia,serif;font-size:29px;line-height:1.12;color:var(--navy)}
.fullscreen-prompt-card p{margin:0 auto 22px;max-width:360px;line-height:1.5;color:#53616a}
.fullscreen-prompt-card button{width:100%;border:0;border-radius:13px;padding:14px 18px;background:var(--navy);color:#fff;font-weight:750;cursor:pointer}
.fullscreen-prompt-card button:hover{background:var(--teal)}
.fullscreen-prompt-card .text-button{margin-top:8px;background:transparent;color:var(--navy);font-weight:650}
.fullscreen-prompt-card .text-button:hover{background:var(--blue)}
:fullscreen .toolbar{padding-left:24px;padding-right:24px}
:fullscreen .viewer{padding-top:18px;padding-bottom:18px}

/* Versie 1.0.6: inhoudsopgave standaard zichtbaar op brede schermen */
@media (min-width:901px){
  .side-panel{width:360px;box-shadow:8px 0 28px rgba(29,38,70,.14)}
  .app.panel-open .viewer{margin-left:360px;transition:margin-left .25s ease}
  .app:not(.panel-open) .viewer{margin-left:0;transition:margin-left .25s ease}
  .panel-backdrop{display:none!important}
}
@media (max-width:900px){
  .app.panel-open .viewer{margin-left:0}
}

.action-button{border:0;border-radius:999px;background:var(--teal);color:#fff;font-weight:750;padding:9px 14px;cursor:pointer;white-space:nowrap;box-shadow:0 4px 12px rgba(46,156,176,.22)}
.action-button:hover{filter:brightness(.96)}
.download-button{text-decoration:none;display:inline-grid;place-items:center}
.links-list{display:grid;gap:10px;padding:0;margin:0;list-style:none}
.links-list a{display:block;padding:12px 14px;border-radius:12px;background:#fff;color:var(--navy);font-weight:700;text-decoration:none;border:1px solid rgba(29,38,70,.12);box-shadow:0 5px 16px rgba(29,38,70,.06)}
.links-list a:hover{background:var(--blue)}
.toast{position:fixed;left:50%;bottom:24px;z-index:110;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--navy);color:#fff;padding:11px 16px;border-radius:999px;box-shadow:0 10px 30px rgba(29,38,70,.28);font-weight:700;transition:.2s ease}
.toast.visible{opacity:1;transform:translate(-50%,0)}
@media(max-width:1100px){.action-button{display:none!important}.toolbar-actions{gap:2px}.toolbar{padding:0 8px;gap:8px}}


/* Versie 1.0.11: mobiele éénpaginaweergave */
@media (max-width:900px){
  .viewer{padding:4px 4px 8px}
  .book-stage{max-width:100%;max-height:100%}
  .edge-nav{width:34px;height:62px;border-radius:12px;background:rgba(255,255,255,.78);font-size:34px}
  .edge-prev{left:2px}.edge-next{right:2px}
  .toolbar-actions #trainingButton,
  .toolbar-actions #shareButton,
  .toolbar-actions #downloadButton,
  .toolbar-actions #zoomOutButton,
  .toolbar-actions #zoomInButton{display:none!important}
  .side-panel{width:min(390px,92vw)}
  .fullscreen-prompt{display:none!important}
}
@media (max-width:560px){
  .toolbar{padding:0 4px;gap:2px}
  .toolbar-center{gap:2px}
  .page-control{font-size:13px;padding:3px 5px}
  .page-control input{width:34px}
  .viewer{padding-left:2px;padding-right:2px}
  .edge-nav{width:30px;height:56px;font-size:31px}
}