/* ══════════════════════════════════════════════════════════════════════
   QVATUBE — Lector de libros (EPUB)
   Overlay propio, independiente del de video (.player-overlay): acá el
   contenido es texto largo con su propio scroll, no un <video> centrado.
   Temas propios del lector (no siguen --bg de la app): quien lee de
   noche quiere negro puro, pero de día sepia/claro es más cómodo que el
   fondo casi negro del resto de QvaTube — por eso son variables locales
   a .reader en vez de tocar --bg/--text globales.
   ══════════════════════════════════════════════════════════════════════ */

.reader-overlay {
  position: fixed; inset: 0; z-index: 600; background: #000;
  display: none;
}
.reader-overlay.show { display: block; }
.reader-overlay #readerRoot { height: 100%; }

.reader {
  height: 100%; display: flex; flex-direction: column;
  background: var(--rd-bg); color: var(--rd-text);
}
.reader.theme-dark  { --rd-bg: #121214; --rd-text: #e8e6e1; --rd-text-2: #9a9a9f; --rd-surface: #1c1c1f; --rd-border: #2a2a2e; }
.reader.theme-sepia { --rd-bg: #f2e8d5; --rd-text: #3a2f1f; --rd-text-2: #7a6a4f; --rd-surface: #e8dbc0; --rd-border: #d8c8a5; }
.reader.theme-light { --rd-bg: #ffffff; --rd-text: #1a1a1a; --rd-text-2: #6b6b70; --rd-surface: #f2f2f3; --rd-border: #e2e2e4; }

.reader-top {
  flex: none; display: flex; align-items: center; gap: 10px;
  padding: max(env(safe-area-inset-top, 0px), 12px) 12px 10px;
  border-bottom: 1px solid var(--rd-border);
}
.reader-title {
  flex: 1; font-family: var(--f-body); font-size: 13.5px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: center;
}
.reader-btn {
  width: 34px; height: 34px; border-radius: 50%; border: none; background: transparent;
  color: var(--rd-text); display: flex; align-items: center; justify-content: center; cursor: pointer;
}
.reader-btn:active { background: var(--rd-surface); }
.reader-btn-text { width: auto; padding: 0 10px; font-family: var(--f-body); font-size: 14px; font-weight: 700; }

.reader-prefs, .reader-toc {
  flex: none; background: var(--rd-surface); border-bottom: 1px solid var(--rd-border);
  max-height: 45vh; overflow-y: auto;
}
.reader-prefs[hidden], .reader-toc[hidden] { display: none; }

.reader-prefs-row { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 12px; }
.reader-size { font-family: var(--f-body); font-size: 13px; color: var(--rd-text-2); min-width: 40px; text-align: center; }
.reader-themes { gap: 10px; padding-top: 0; }
.reader-theme-btn {
  font-family: var(--f-body); font-size: 12.5px; font-weight: 600; padding: 8px 14px;
  border-radius: 20px; border: 1px solid var(--rd-border); background: transparent; color: var(--rd-text); cursor: pointer;
}
.reader-theme-btn.active { border-color: var(--accent); color: var(--accent); }

.reader-toc-list { padding: 6px 0; }
.reader-toc-item {
  display: block; width: 100%; text-align: left; background: none; border: none;
  color: var(--rd-text); font-family: var(--f-body); font-size: 13.5px; padding: 11px 16px;
  cursor: pointer; border-bottom: 1px solid var(--rd-border);
}
.reader-toc-item:active { background: var(--rd-bg); }

.reader-scroll { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.reader-content {
  max-width: 640px; margin: 0 auto; padding: 28px 22px 60px;
  font-family: Georgia, 'Times New Roman', serif; line-height: 1.7; font-size: 18px;
}
.reader-content img { max-width: 100%; height: auto; display: block; margin: 16px auto; }
.reader-content p { margin: 0 0 1em; }
.reader-content h1, .reader-content h2, .reader-content h3 { font-family: var(--f-body); line-height: 1.3; margin: 1.2em 0 .6em; }
.reader-content a { color: var(--accent); }
.reader-content .center-msg { padding: 60px 0; display: flex; justify-content: center; }
.reader-pdf-page { display: block; margin: 0 auto; background: #fff; box-shadow: 0 2px 14px rgba(0,0,0,.35); }
.reader-error { text-align: center; color: var(--rd-text-2); font-family: var(--f-body); font-size: 13.5px; padding: 40px 24px; }

.reader-bottom {
  flex: none; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 14px max(env(safe-area-inset-bottom, 0px), 10px);
  border-top: 1px solid var(--rd-border);
}
.reader-nav {
  font-family: var(--f-body); font-size: 12.5px; font-weight: 700; color: var(--rd-text);
  background: var(--rd-surface); border: 1px solid var(--rd-border); border-radius: var(--r-sm);
  padding: 9px 14px; cursor: pointer;
}
.reader-nav:disabled { opacity: .35; }
.reader-nav:active:not(:disabled) { transform: scale(.96); }
.reader-progress { font-family: var(--f-body); font-size: 11.5px; color: var(--rd-text-2); }