/* Kai Leeshulp - PDF Viewer page
   Stijl matcht het widget: brand-tokens #1594C8 / #23304C, Atkinson Hyperlegible. */

.bt-pdf-viewer-body {
    --bt-primary: #1594C8;
    --bt-primary-hover: #117AA6;
    --bt-primary-soft: rgba(21, 148, 200, 0.10);
    --bt-accent: #23304C;
    --bt-accent-soft: rgba(35, 48, 76, 0.06);
    --bt-text: #131313;
    --bt-text-light: #4A5568;
    --bt-text-muted: #8A94A6;
    --bt-bg: #FFFFFF;
    --bt-bg-page: #EAF4FA;
    --bt-border: #D6E4EC;
    --bt-radius: 14px;
    --bt-radius-pill: 999px;
    --bt-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
    --bt-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    margin: 0;
    background: var(--bt-bg-page);
    font-family: "Atkinson Hyperlegible", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    color: var(--bt-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Body = full viewport, flex-column: header bovenin, main scroll-zone
       eronder. Hierdoor heeft de main z'n eigen overflow-context en kan
       inzoomen-met-scroll werken zonder het document-scrolgedrag te breken. */
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ── Topbar ───────────────────────────────────────────── */
.bt-pdfv {
    flex: 0 0 auto;
    z-index: 50;
    background: var(--bt-bg);
    border-bottom: 1px solid var(--bt-border);
    box-shadow: 0 2px 8px rgba(35, 48, 76, 0.04);
}
.bt-pdfv__inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.25rem;
}
.bt-pdfv__title-wrap {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}
.bt-pdfv__eyebrow {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--bt-primary);
}
.bt-pdfv__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--bt-accent);
    margin: 0;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.bt-pdfv__actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}

/* Shared pill button — matcht .bt-btn uit het widget.
   Hoge specificiteit + !important om Elementor's globale a/button styles te neutraliseren. */
body.bt-pdf-viewer-body .bt-pdfv__back,
body.bt-pdf-viewer-body .bt-pdfv__seg,
body.bt-pdf-viewer-body .bt-pdfv__download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    min-height: 35px;
    border-radius: var(--bt-radius-pill);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
    white-space: nowrap;
    text-decoration: none;
    cursor: pointer;
    text-transform: none !important;
    box-shadow: none !important;
    transition: background 0.2s cubic-bezier(0.4,0,0.2,1),
                border-color 0.2s cubic-bezier(0.4,0,0.2,1),
                color 0.2s cubic-bezier(0.4,0,0.2,1) !important;
}

/* Back — outline ghost */
body.bt-pdf-viewer-body .bt-pdfv__back {
    background: var(--bt-bg) !important;
    color: var(--bt-text) !important;
    border: 1.5px solid var(--bt-border) !important;
}
body.bt-pdf-viewer-body .bt-pdfv__back:hover {
    background: var(--bt-primary) !important;
    border-color: var(--bt-primary) !important;
    color: #fff !important;
}

/* Segmented toggle */
body.bt-pdf-viewer-body .bt-pdfv__segmented {
    display: inline-flex;
    background: var(--bt-bg);
    border: 1.5px solid var(--bt-border);
    border-radius: var(--bt-radius-pill);
    padding: 3px;
    gap: 2px;
}
body.bt-pdf-viewer-body .bt-pdfv__seg {
    border: 0 !important;
    padding: 4px 14px !important;
    min-height: 29px !important;
    background: transparent !important;
    color: var(--bt-text-light) !important;
}
body.bt-pdf-viewer-body .bt-pdfv__seg:hover { color: var(--bt-primary) !important; }
body.bt-pdf-viewer-body .bt-pdfv__seg[aria-pressed="true"] {
    background: var(--bt-primary) !important;
    color: #fff !important;
}

/* Download — filled primary */
body.bt-pdf-viewer-body .bt-pdfv__download {
    background: var(--bt-primary) !important;
    color: #fff !important;
    border: 1.5px solid var(--bt-primary) !important;
}
body.bt-pdf-viewer-body .bt-pdfv__download:hover {
    background: var(--bt-primary-hover) !important;
    border-color: var(--bt-primary-hover) !important;
    color: #fff !important;
}

body.bt-pdf-viewer-body .bt-pdfv__back:focus-visible,
body.bt-pdf-viewer-body .bt-pdfv__seg:focus-visible,
body.bt-pdf-viewer-body .bt-pdfv__download:focus-visible {
    outline: 3px solid rgba(21, 148, 200, 0.25) !important;
    outline-offset: 2px;
}

/* Tame Elementor / theme defaults inside the viewer */
body.bt-pdf-viewer-body .bt-pdfv__back svg,
body.bt-pdf-viewer-body .bt-pdfv__download svg {
    width: 16px !important;
    height: 16px !important;
    fill: none !important;
    stroke: currentColor !important;
}

/* ── Main viewport ────────────────────────────────────── */
/* Main is de scroll-zone: max 900px breed (lees-kolom), gecentreerd in body,
   en met overflow:auto zodat verticaal scrollen door pagina's én horizontaal
   scrollen na inzoomen allebei binnen main werken — body zelf scrolt niet. */
.bt-pdfv-main {
    flex: 1 1 0;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    overflow: auto;
    padding: 1.75rem 1rem 5rem;
}

/* Inner column. width:max-content past zich aan de paginabreedte aan;
   min-width:100% houdt 'm minstens zo breed als de scroll-container. */
.bt-pdf-original {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: max-content;
    min-width: 100%;
    margin: 0 auto;
}

body.bt-explain-mode .bt-pdf-original,
body.bt-explain-mode .bt-pdf-original .textLayer,
body.bt-explain-mode .bt-pdf-original .textLayer span { cursor: pointer; }

/* Tekst-selectie tijdens pannen uit, zodat slepen niet per ongeluk
   tekst markeert. */
body.bt-pdf-panning .bt-pdf-original,
body.bt-pdf-panning .bt-pdf-original * {
    user-select: none;
    -webkit-user-select: none;
}
.bt-pdf-original__page {
    position: relative;
    background: var(--bt-bg);
    border-radius: 6px;
    box-shadow: var(--bt-shadow);
    overflow: hidden;
    line-height: 0;
    flex-shrink: 0;
}
.bt-pdf-original__page canvas {
    display: block;
    width: 100% !important;
    height: auto !important;
}

/* PDF.js text layer — invisible, selectable overlay (enables Uitleg / selectie). */
.bt-pdf-original__page .textLayer {
    position: absolute;
    inset: 0;
    overflow: hidden;
    opacity: 1;
    line-height: 1;
    text-align: initial;
    forced-color-adjust: none;
    transform-origin: 0 0;
    z-index: 2;
    color: transparent;
}
.bt-pdf-original__page .textLayer span,
.bt-pdf-original__page .textLayer br {
    color: transparent;
    position: absolute;
    white-space: pre;
    cursor: text;
    transform-origin: 0% 0%;
}
.bt-pdf-original__page .textLayer ::selection {
    background: rgba(21, 148, 200, 0.35);
}
body.bt-explain-mode .bt-pdf-original__page .textLayer span {
    cursor: pointer;
}

/* PDF.js maakt intern een 'hiddenCanvasElement' aan op document.body voor
   font-metingen in de text-layer. Hij is opaak (alpha:false) en standaard
   300×150px → wordt zichtbaar als zwart vlak als we 'm niet wegstoppen.
   De officiële PDF.js-viewer doet dit ook in zijn eigen viewer.css. */
.hiddenCanvasElement {
    position: absolute !important;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Link-overlays — klikbare hyperlinks in de PDF. We bouwen <a>-elementen
   zelf (zie pdf-viewer.js), dus geen PDF.js-AnnotationLayer-styling meer
   (die zou via appearance-streams reusachtige zwarte canvases plaatsen). */
.bt-pdf-original__page .annotationLayer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    transform-origin: 0 0;
    z-index: 3;
}
.bt-pdf-original__page .annotationLayer .bt-pdf-linkannot {
    position: absolute;
    display: block;
    pointer-events: auto;
    cursor: pointer;
    background: transparent;
    text-decoration: none;
    /* Boven de textLayer (z-index 2) en de annotation-canvas, zodat
       de klik niet alsnog op een textLayer-span landt. */
    z-index: 4;
}
/* Cursor expliciet op pointer houden, ook in zoom-/explain-modus. */
body.bt-pdf-zoomed .bt-pdf-original__page .annotationLayer .bt-pdf-linkannot,
body.bt-explain-mode .bt-pdf-original__page .annotationLayer .bt-pdf-linkannot {
    cursor: pointer;
}
.bt-pdf-original__page .annotationLayer .bt-pdf-linkannot:hover {
    background: rgba(21, 148, 200, 0.15);
}


/* Text view */
.bt-pdf-content {
    background: var(--bt-bg);
    padding: 2rem 2.25rem;
    border-radius: var(--bt-radius);
    box-shadow: var(--bt-shadow);
    line-height: 1.7;
    font-size: 1.125rem;
    color: var(--bt-text);
}
.bt-pdf-content p { margin: 0 0 1em; }
.bt-pdf-page + .bt-pdf-page {
    margin-top: 2.25rem;
    padding-top: 1.75rem;
    border-top: 1px dashed var(--bt-border);
}
.bt-pdf-page__heading {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--bt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 0.85rem;
}

.bt-pdf-loading,
.bt-pdf-error {
    text-align: center;
    color: var(--bt-text-muted);
    padding: 3rem 0;
    font-size: 1rem;
}
.bt-pdf-error { color: #b91c1c; }

@media (max-width: 720px) {
    .bt-pdfv__inner { flex-wrap: wrap; padding: 0.6rem 0.85rem; }
    .bt-pdfv__title-wrap { order: 3; flex-basis: 100%; }
    .bt-pdfv__title { font-size: 0.9rem; white-space: normal; }
    .bt-pdfv__actions { margin-left: auto; }
    .bt-pdfv__seg { padding: 0.4rem 0.7rem; font-size: 0.9rem; }
    .bt-pdfv__download span { display: none; }
    .bt-pdf-content { padding: 1.25rem; font-size: 1rem; }
}