/* ──────────────────────────────────────────────────────────────────
 * BOOK FLOW STYLES — ekstrahovano iz index.html
 * Sadrži:
 *   1) Book kartice (lista, cover, body, dugmad)
 *   2) Lock/Unlock stanje (zajedno sa video-unlock-* koji deli vizuelni jezik)
 *   3) QR purchase modal
 *   4) Immersive PDF reader (reader-immersive + toolbar + canvas + spinner)
 *
 * CSS varijable definisane su u `:root` u demo-u (index.html). Ako ih
 * portuje u svoj projekat, redefinisati ili zameniti realnim bojama.
 * ────────────────────────────────────────────────────────────────── */

:root {
  --bg: #0e0e16;
  --bg2: #14141d;
  --gold: #d4af37;
  --gold-dim: rgba(212,175,55,.15);
  --gold-border: rgba(212,175,55,.3);
  --text: #e8e8ed;
  --text-dim: #bdbdc6;
}

/* ── BOOK KARTICE ────────────────────────────────────────────────── */
.book-list { display: flex; flex-direction: column; gap: 24px; }
.book {
  display: flex;
  border: 1px solid var(--gold-border);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255,255,255,.02);
  transition: border-color .2s;
}
.book:hover { border-color: rgba(212,175,55,.5); }
.book-cover {
  width: 220px; min-width: 220px;
  background: rgba(212,175,55,.06);
  border-right: 1px solid var(--gold-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 48px; color: rgba(212,175,55,.35);
  align-self: stretch;
  overflow: hidden;
}
.book-cover img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  display: block;
}
@media(max-width:640px){
  .book { flex-direction: column; }
  .book-cover { width: 100%; min-width: 0; aspect-ratio: 16/9; border-right: none; border-bottom: 1px solid var(--gold-border); }
}
.book-body { flex: 1; padding: 22px 24px; min-width: 0; }
.book-title { font-family: 'Cinzel', serif; font-size: 1rem; letter-spacing: .04em; margin-bottom: 4px; }
.book-author { color: var(--gold); font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: .92rem; letter-spacing: .03em; margin-bottom: 10px; opacity: .85; }
.book-text {
  color: var(--text-dim); font-size: .9rem; line-height: 1.6;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
.book.open .book-text {
  display: block;
  -webkit-line-clamp: unset;
  overflow: visible;
}
.book-price { color: var(--gold); font-weight: 600; font-size: .95rem; margin-bottom: 14px; }
.book-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.btn-more {
  background: none; border: none;
  color: var(--gold); cursor: pointer;
  font-family: 'Cormorant Garamond', serif;
  font-style: italic; font-size: .95rem;
  padding: 0;
}

/* ── LOCK/UNLOCK STANJE (deli vizuelni jezik sa video lock-om) ──── */
.btn-paypal {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px;
  background: #0070ba;
  color: #fff;
  border: none; border-radius: 6px;
  font-family: 'Cinzel', serif;
  font-size: 12px; letter-spacing: .08em;
  cursor: pointer;
  text-decoration: none;
  transition: filter .2s;
}
.btn-paypal:hover { filter: brightness(1.15); }
.video-unlock-row {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: center;
}
.video-unlock-input {
  background: rgba(255,255,255,.06);
  border: 1px solid var(--gold-border);
  color: var(--text);
  padding: 8px 14px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1rem;
  border-radius: 4px;
  width: 160px;
  outline: none;
}
.video-unlock-input:focus { border-color: var(--gold); }
.btn-unlock {
  padding: 8px 18px;
  background: var(--gold-dim);
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: 'Cinzel', serif;
  font-size: 11px; letter-spacing: .1em;
  cursor: pointer;
  border-radius: 4px;
  transition: all .2s;
}
.btn-unlock:hover { background: rgba(212,175,55,.3); }
.video-unlock-err {
  font-size: .8rem;
  color: #e05a5a;
  display: none;
}

/* ── QR PURCHASE MODAL ──────────────────────────────────────────── */
.qr-modal-backdrop {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.85);
  display: none; align-items: center; justify-content: center;
  padding: 20px;
}
.qr-modal-backdrop.open { display: flex; }
.qr-modal {
  max-width: 460px; width: 100%;
  background: var(--bg);
  border: 1px solid var(--gold-border);
  border-radius: 10px;
  padding: 28px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
.qr-modal-title {
  font-family: 'Cinzel', serif;
  font-size: 14px; letter-spacing: .18em;
  color: var(--gold); text-transform: uppercase;
  margin-bottom: 8px;
}
.qr-modal-item {
  color: var(--text); font-size: 1rem; margin-bottom: 18px;
}
.qr-modal-img {
  max-width: 280px; width: 100%; height: auto;
  border-radius: 6px;
  background: #fff;
  padding: 12px;
  margin: 0 auto 18px;
  display: block;
}
.qr-modal-empty {
  color: var(--text-dim); font-style: italic;
  padding: 32px; border: 1px dashed rgba(212,175,55,.25); border-radius: 6px;
  margin-bottom: 18px;
}
.qr-modal-info {
  color: var(--text-dim); font-size: .85rem; line-height: 1.55;
  margin-bottom: 18px;
}
.qr-modal-close {
  padding: 9px 22px;
  border: 1px solid var(--gold-border);
  background: transparent;
  color: var(--gold);
  font-family: 'Cinzel', serif; font-size: 11px; letter-spacing: .14em;
  border-radius: 4px; cursor: pointer; transition: background .2s;
}
.qr-modal-close:hover { background: rgba(212,175,55,.1); }

/* ── IMMERSIVE PDF READER ───────────────────────────────────────── */
.reader-immersive {
  position: fixed; inset: 0; z-index: 1100;
  display: none;
  flex-direction: column;
  background: radial-gradient(ellipse at top, #15151f 0%, #08080d 100%);
  user-select: none; -webkit-user-select: none;
}
.reader-immersive.open { display: flex; }
.reader-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid rgba(212,175,55,.25);
  background: linear-gradient(180deg, rgba(212,175,55,.06), rgba(212,175,55,0));
}
.reader-title-wrap { display: flex; align-items: center; gap: 12px; }
.reader-icon {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(212,175,55,.45);
  border-radius: 50%;
  color: var(--gold);
  font-size: 16px;
  background: rgba(212,175,55,.06);
}
.reader-title {
  font-family: 'Cinzel', serif;
  font-size: 14px; letter-spacing: .18em;
  color: var(--gold);
  text-transform: uppercase;
}
.reader-close {
  background: transparent;
  border: 1px solid var(--gold-border);
  color: var(--gold);
  padding: 8px 18px;
  font-family: 'Cinzel', serif;
  font-size: 11px; letter-spacing: .14em;
  border-radius: 6px;
  cursor: pointer;
  transition: background .2s;
  display: inline-flex; align-items: center;
}
.reader-close:hover { background: rgba(212,175,55,.12); }
.reader-stage {
  flex: 1; position: relative;
  margin: 18px 24px;
  border: 1px solid rgba(212,175,55,.18);
  border-radius: 10px;
  overflow: auto;
  background: #2a2a35;
  box-shadow: 0 16px 50px rgba(0,0,0,.6);
  display: flex; justify-content: center; align-items: flex-start;
  padding: 24px 12px;
  scrollbar-width: thin;
  scrollbar-color: rgba(212,175,55,.4) transparent;
}
.reader-stage::-webkit-scrollbar { width: 10px; height: 10px; }
.reader-stage::-webkit-scrollbar-thumb { background: rgba(212,175,55,.35); border-radius: 5px; }
.reader-canvas-wrap {
  display: inline-block;
  box-shadow: 0 8px 32px rgba(0,0,0,.5);
  background: #fff;
  border-radius: 4px;
}
.reader-canvas {
  display: block;
  user-select: none; -webkit-user-select: none;
  pointer-events: none; /* sprečava drag-to-save slike */
}
.reader-loading, .reader-error {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--gold);
  text-align: center;
  background: rgba(20,20,30,.85);
}
.reader-error { color: #e57373; }
.reader-loading p, .reader-error p {
  font-family: 'Cinzel', serif; font-size: 12px; letter-spacing: .15em;
  margin-top: 14px;
}
.reader-spinner {
  width: 42px; height: 42px;
  border: 3px solid rgba(212,175,55,.15);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: readerSpin .9s linear infinite;
}
@keyframes readerSpin { to { transform: rotate(360deg); } }

.reader-toolbar { display: flex; align-items: center; gap: 4px; }
.reader-tool {
  background: transparent;
  border: 1px solid rgba(212,175,55,.22);
  color: var(--gold);
  padding: 5px 11px;
  font-family: 'Cormorant Garamond', serif; font-size: 18px;
  line-height: 1; font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s;
  min-width: 32px;
}
.reader-tool:hover:not(:disabled) { background: rgba(212,175,55,.12); }
.reader-tool:disabled { opacity: .35; cursor: not-allowed; }
.reader-tool-divider { width: 1px; height: 20px; background: rgba(212,175,55,.18); margin: 0 6px; }
.reader-page-jump {
  display: flex; align-items: center; gap: 6px;
  color: var(--text);
  font-family: 'Cinzel', serif; font-size: 11px;
  padding: 0 6px;
}
.reader-page-input {
  width: 50px; padding: 4px 6px;
  background: transparent;
  border: 1px solid rgba(212,175,55,.25);
  border-radius: 4px;
  color: var(--text);
  font-family: 'Cinzel', serif; font-size: 11px;
  text-align: center;
}
.reader-page-sep, .reader-page-total {
  color: var(--text-dim);
  font-family: 'Cinzel', serif; font-size: 11px;
  letter-spacing: .08em;
}
@media(max-width:760px){
  .reader-toolbar { gap: 2px; }
  .reader-tool { padding: 4px 8px; font-size: 16px; }
  .reader-tool-divider { display: none; }
  .reader-page-input { width: 36px; }
}
.reader-footer {
  text-align: center;
  padding: 10px 24px 18px;
  color: var(--text-dim);
  font-size: .8rem; font-style: italic;
  letter-spacing: .02em;
}
@media(max-width:640px){
  .reader-topbar { padding: 10px 14px; }
  .reader-stage { margin: 10px; }
  .reader-title { font-size: 12px; letter-spacing: .14em; }
  .reader-close { padding: 6px 12px; font-size: 10px; }
}