/* Books-screen: shelf + cards + upload-modal + preview-modal.
   Phase 5.3 — frontend boekenkast UI. */

/* ========== Boekenkast-link op home-screen ========== */
/* Visueel-equivalent aan .guest-link maar altijd zichtbaar. */
.books-link {
  display: flex;
  align-items: center;
  gap: 14px;
  align-self: center;
  /* 380px — gelijk aan .guest-link zodat de twee onderste kaarten (Boekenkast
     + "maak account") even breed zijn. width:100% laat 'm krimpen op smalle
     schermen. */
  max-width: 380px;
  width: 100%;
  padding: 14px 18px;
  margin-top: 14px;
  background: var(--card);
  border: 2px solid var(--border, #E4E4EC);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  transition: all var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.books-link:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.books-link-icon {
  font-size: 28px;
  line-height: 1;
  flex-shrink: 0;
}
.books-link-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
.books-link-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--primary-dark);
}
.books-link-sub {
  font-size: 12px;
  color: var(--text-soft);
  font-weight: 600;
}
.books-link-arrow {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.books-link:hover .books-link-arrow { transform: translateX(4px); }

/* "of"-scheiding tussen bestand-kiezen en link-plakken in de upload-modal. */
.book-upload-or {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 4px 0;
  color: var(--text-soft);
  font-weight: 700;
  font-size: 14px;
}
.book-upload-or::before,
.book-upload-or::after {
  content: "";
  flex: 1;
  height: 2px;
  background: #E4E4EC;
  border-radius: 2px;
}

/* ========== Books-screen layout ========== */
/* Header recyclet .home-header styling (zelfde patroon: brand-center,
   maar met back-knop links + spacer rechts om balans te houden). */
.books-back-btn {
  background: transparent;
  border: none;
  font-size: 28px;
  line-height: 1;
  color: var(--primary-dark);
  cursor: pointer;
  padding: 4px 12px;
  border-radius: 8px;
  font-weight: 800;
  transition: background var(--transition);
  font-family: inherit;
}
.books-back-btn:hover { background: rgba(79,184,240,.1); }
.home-header-spacer {
  width: 44px; /* matcht back-btn breedte voor visuele symmetrie */
  flex-shrink: 0;
}

/* Status-banner boven de grid (loading / error states). */
.books-status {
  text-align: center;
  padding: 12px;
  color: var(--text-soft);
  font-size: 15px;
  font-weight: 600;
}
.books-status.error {
  color: var(--danger);
  background: rgba(229,110,110,.08);
  border-radius: var(--radius);
}

/* ========== Books-grid ========== */
/* Boekenkast benut de volle breedte — de default .container (560px) is voor de
   lees-/profiel-schermen; hier willen we zoveel mogelijk boeken per rij. Op
   smalle schermen valt 'ie via 94vw vanzelf terug naar 1-2 kolommen. */
#books-screen .container { width: min(1280px, 94vw); }

/* Zelfde grid-pattern als profiles-grid (auto-fit tiles) zodat 't visueel
   familiar voelt na de home-screen. minmax met 1fr laat de tegels de volle
   rijbreedte vullen i.p.v. links-uitlijnen met gaten. */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
}

/* Book-card: titel + niveau-badge + sentence-count + delete-knop */
.book-card {
  background: var(--card);
  padding: 18px 14px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all var(--transition);
  border: 3px solid transparent;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 160px;
}
.book-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
}
.book-card-icon {
  font-size: 38px;
  line-height: 1;
}
.book-card-title {
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  /* Multi-line ellipsis: max 3 regels */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.book-card-meta {
  margin-top: auto;
  font-size: 12px;
  color: var(--text-soft);
  font-weight: 600;
}
/* Voortgang-pill op book-card. Visueel verwant aan .chapter-progress in
   de chapter-modal (zelfde kleur-semantiek: groen = klaar, blauw = bezig)
   maar iets kleiner zodat 'ie naast de level-badge past op de card. */
.book-card-progress {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 4px;
  margin-left: 4px;
}
/* Beide states gebruiken dezelfde groene kleur — voortgang voelt zo
   visueel "in dezelfde flow" als uitgelezen. Tekst onderscheidt
   wat exact 't verschil is (% vs ✓ Uitgelezen). */
.book-card-progress.done,
.book-card-progress.in-progress {
  background: rgba(71, 196, 116, 0.15);
  color: var(--success);
}

.book-card-level-badge {
  display: inline-block;
  background: var(--bg-grad-1);
  color: var(--primary-dark);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 4px;
}
.book-card-delete {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(229,110,110,.1);
  color: var(--danger);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
  transition: all var(--transition);
  opacity: .55;
  border: none;
}
.book-card:hover .book-card-delete { opacity: 1; }
.book-card-delete:hover {
  background: var(--danger);
  color: white;
  transform: scale(1.1);
}

/* "+ Boek toevoegen" card variant — visueel-equivalent aan profile-card-new. */
.book-card-new {
  background: transparent;
  border: 3px dashed #C4C4D4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-soft);
  padding: 24px 14px;
}
.book-card-new:hover {
  border-color: var(--primary);
  background: rgba(79,184,240,.06);
  color: var(--primary-dark);
  transform: translateY(-3px);
}
.book-card-new .new-card-plus {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
}
.book-card-new .new-card-text {
  font-size: 15px;
  font-weight: 700;
}

/* Empty state (geen boeken nog) */
.books-empty {
  text-align: center;
  color: var(--text-soft);
  padding: 40px 20px;
  font-size: 15px;
  font-style: italic;
}

/* ========== Upload-modal spacing tussen velden en actions ========== */
#book-upload-initial .field + .field { margin-top: 14px; }
#book-upload-initial .modal-actions  { margin-top: 22px; }

/* ========== File-picker (custom, native input verborgen) ========== */
.file-picker {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: #F3F5FA;
  border: 1px solid #E2E6EF;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 200ms ease, border-color 200ms ease;
}
.file-picker:hover    { background: #ECEFF7; border-color: #D2D7E2; }
.file-picker:focus-within {
  border-color: var(--primary);
  background: #ECEFF7;
  outline: 2px solid rgba(79, 184, 240, .25);
  outline-offset: 1px;
}
/* Verberg native file-input maar laat 't klikbaar via label-for. Niet
   display:none want dan kan label op iOS in sommige cases 'm niet
   triggeren — gebruik visually-hidden technique. */
.file-picker-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.file-picker-btn {
  flex-shrink: 0;
  display: inline-block;
  padding: 8px 16px;
  background: var(--card);
  border: 1px solid #DCE0EA;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.file-picker:hover .file-picker-btn { background: #F8F9FC; }
.file-picker-name {
  flex: 1;
  min-width: 0;
  font-size: 15px;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-picker-name.has-file {
  color: var(--text);
  font-weight: 600;
}

/* ========== Upload-modal extra styling ========== */
.book-upload-preview {
  background: #FAFAFD;
  border-left: 3px solid var(--success);
  padding: 12px 14px;
  margin: 12px 0;
  border-radius: 8px;
  font-size: 14px;
  max-height: 180px;
  overflow-y: auto;
}
/* Dedup ("zat al in onze database") = waarschuwing, geen groen licht → oranje. */
.book-upload-preview.is-warning { border-left-color: var(--warn); }
.book-upload-preview .preview-line {
  margin-bottom: 6px;
  line-height: 1.3;
}
.book-upload-preview .preview-line:last-child { margin-bottom: 0; }

/* Deel-checkbox in de upload-modal */
.book-share-check {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-soft);
}
.book-share-check input {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* De 'Kies uit bestaande boeken'-knop hergebruikt .books-link (max 380px, voor
   het home-scherm). In de upload-modal moet 'ie de volle breedte pakken. */
#book-library-open { max-width: none; }

/* Bibliotheek-picker (kies uit bestaande, gedeelde boeken) */
.book-library-search {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  font-size: 16px;
  font-family: inherit;
  border: 2px solid #E4E4EC;
  border-radius: var(--radius);
  background: #FAFAFD;
  margin: 10px 0;
}
.book-library-search:focus { outline: none; border-color: var(--primary); }
.book-library-grid {
  max-height: 52vh;
  overflow-y: auto;
  padding: 4px;
}
.book-library-card { cursor: default; }
.book-library-add {
  margin-top: 10px;
  width: 100%;
  padding: 8px 6px;
  border: 2px solid var(--primary);
  background: var(--card);
  color: var(--primary-dark);
  border-radius: 10px;
  font-family: inherit;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.book-library-add:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
.book-library-add:disabled { opacity: .7; cursor: default; transform: none; }
.book-library-card.is-added { border-color: var(--success); }
.book-library-card.is-added .book-library-add {
  border-color: var(--success);
  color: var(--success);
  background: rgba(71, 196, 116, .08);
}

/* Deel-schakelaar op de boek-kaart (alleen PDF; webpagina = vast 'gedeeld'). */
.book-card-share {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-soft);
  cursor: pointer;
}
.book-card-share-input {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}
.book-card-share-static { cursor: default; color: var(--primary-dark); }

/* Titel + potlood in de preview-modal (titel bewerken, eigenaar-only). Titel
   inline + potlood inline-flex, zodat 't potlood NA de titeltekst staat (eind
   van de laatste regel) i.p.v. in de hoek bij 't kruisje. */
.book-preview-title-row #book-preview-title { display: inline; margin: 0; }
.book-preview-rename {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  margin-left: 6px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0 0 9px;
  border-radius: 8px;
  transition: background-color var(--transition);
}
.book-preview-rename:hover { background: #ECEFF7; }

/* ========== Book-preview modal (klik op boek-card) ========== */
/* Wider modal want sentences-lijst kan lang zijn */
.modal-card-wide {
  max-width: 600px;
}
.book-preview-sentences {
  background: #FAFAFD;
  border-radius: 8px;
  padding: 14px;
  margin: 12px 0;
  max-height: 50vh;
  overflow-y: auto;
  font-size: 14px;
}
.book-preview-sentences .preview-line {
  margin-bottom: 8px;
  line-height: 1.4;
  padding-left: 22px;
  position: relative;
}
.book-preview-sentences .preview-line:last-child { margin-bottom: 0; }
.book-preview-sentences .preview-line .num {
  position: absolute;
  left: 0;
  top: 0;
  font-size: 11px;
  color: var(--text-soft);
  font-weight: 700;
}
.book-preview-more {
  text-align: center;
  color: var(--text-soft);
  font-size: 13px;
  font-style: italic;
  margin-top: 8px;
}

/* ========== Kind-boekenkast modal — interne scroll ========== */
/* Voorkomt dat de modal zelf groter wordt dan de viewport bij veel boeken.
   De grid scrollt intern; header (titel + meta) en footer (← Terug) blijven
   zichtbaar. max-height conservatief zodat er nog ruimte boven/onder de
   modal-card overblijft (clamp-padding van .modal-overlay = max 40px). */
#kid-shelf-modal .modal-card {
  max-height: calc(100vh - 80px);
  max-height: calc(100dvh - 80px);   /* 100dvh = mobile browser-chrome aware */
  display: flex;
  flex-direction: column;
}
#kid-shelf-grid {
  overflow-y: auto;
  flex: 1 1 auto;
  /* Genereuze padding boven/onder zodat eerste en laatste card-rij niet
     half achter de modal-rand verdwijnen op scroll-grenzen. */
  padding: 16px 4px 20px;
}
/* Marge tussen scroll-area en "← Terug" knop, anders plakt 'ie op de cards. */
#kid-shelf-modal .modal-actions { margin-top: 16px; }

/* Boek-titels mogen meer ruimte in deze modal: alle VLL-leeskaarten beginnen
   met dezelfde prefix ("Groep 3 kim VLL Veilig en vlot kern 9 maan...")
   dus 3 regels was te weinig om ze te onderscheiden. Klein lettertype +
   5 regels geeft het discriminerende stuk altijd zichtbaar. */
#kid-shelf-grid .book-card-title {
  font-size: 13px;
  line-height: 1.25;
  -webkit-line-clamp: 5;
  flex-shrink: 0;     /* niet inkrimpen als de meta-rij met progress-pill groeit */
}
/* Card-min-height ruimer in kid-shelf zodat 5 regels titel + progress-pill
   + woorden-count passen zonder elkaar te verdringen. Cards in dezelfde row
   matchen tot de hoogste, dus alle cards krijgen dezelfde hoogte = mooi. */
#kid-shelf-grid .book-card { min-height: 210px; }

/* ========== Voortgang-rij op book-card (Kind-boekenkast) ========== */
/* Voortgang-pill + ↺-reset-knop staan inline naast elkaar zodat 't visueel
   één geheel is ("voortgang met optie tot resetten"). Wrapper centreert in
   de card-meta sectie. */
.book-progress-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 4px;
}
.book-card-reset {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(79, 184, 240, .12);
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  flex-shrink: 0;
}
.book-card-reset:hover {
  background: var(--primary);
  color: white;
  transform: rotate(-90deg);
}

/* ========== Chapter-selection modal ========== */
.book-chapters-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 16px;
  max-height: 50vh;
  overflow-y: auto;
}
.book-chapters-list li {
  padding: 0;
  margin-bottom: 6px;
}
.book-chapters-list button {
  width: 100%;
  text-align: left;
  background: #FAFAFD;
  border: 2px solid var(--border, #E4E4EC);
  border-radius: 10px;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.book-chapters-list button:hover {
  border-color: var(--primary);
  background: var(--card);
  transform: translateX(2px);
}
.book-chapters-list .chapter-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.book-chapters-list .chapter-side {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.book-chapters-list .chapter-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-soft);
}
.book-chapters-list .chapter-progress {
  font-size: 12px;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 999px;
}
.book-chapters-list .chapter-progress.done {
  background: rgba(71, 196, 116, 0.15);
  color: var(--success);
}
.book-chapters-list .chapter-progress.in-progress {
  background: var(--bg-grad-1);
  color: var(--primary-dark);
}

/* Responsive: mobile compacter */
@media (max-width: 500px) {
  .books-grid { gap: 10px; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .book-card { padding: 14px 10px; min-height: 140px; }
  .book-card-title { font-size: 14px; }
  .book-card-icon { font-size: 32px; }
  .modal-card-wide { max-width: 100%; }
}