/* biblioteca-app/libros.css — Formato "Libros" (PDF local + subrayado).
   Visor pdf.js + card de catálogo + toolbar de subida. Reutiliza los tokens
   de color del resto de la app (--ocre, --indigo, --line, --bg, --paper-app). */

/* ─────────── Toolbar "+ Añadir PDF" ─────────── */
.libros-toolbar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  padding: 0.7rem 0.8rem;
  margin-bottom: 0.8rem;
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--indigo) 6%, transparent);
}
.libros-toolbar.is-drag {
  border-color: var(--ocre);
  background: color-mix(in srgb, var(--ocre) 12%, transparent);
}
.libros-add-btn {
  font: 600 12.5px/1 "IBM Plex Mono", monospace;
  color: var(--bg);
  background: var(--ocre);
  border: 1px solid var(--ocre);
  border-radius: 8px;
  padding: 0.5rem 0.85rem;
  cursor: pointer;
}
.libros-add-btn:hover { filter: brightness(1.06); }
.libros-toolbar-hint {
  font: 400 11px/1.4 "IBM Plex Mono", monospace;
  color: color-mix(in srgb, var(--ink, #ddd) 65%, transparent);
  opacity: 0.8;
}

/* ─────────── Card de catálogo ─────────── */
.card-libro {
  display: flex;
  gap: 0.8rem;
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper-app, rgba(255,255,255,0.02));
  margin-bottom: 0.7rem;
}
.libro-card-port {
  position: relative;
  flex: 0 0 64px;
  width: 64px;
  height: 84px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--indigo) 22%, transparent);
  border: 1px solid var(--line);
  overflow: hidden;
}
.libro-card-ico { font-size: 26px; opacity: 0.7; }
.libro-card-info { flex: 1 1 auto; min-width: 0; }
.libro-card-acciones { display: flex; gap: 0.4rem; margin-top: 0.5rem; }
.libro-abrir {
  font: 600 11.5px/1 "IBM Plex Mono", monospace;
  color: var(--ocre);
  background: transparent;
  border: 1px solid var(--ocre);
  border-radius: 7px;
  padding: 0.42rem 0.7rem;
  cursor: pointer;
}
.libro-abrir:hover { background: color-mix(in srgb, var(--ocre) 14%, transparent); }
.libro-editar {
  font: 600 13px/1 "IBM Plex Mono", monospace;
  color: inherit;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0.42rem 0.6rem;
  cursor: pointer;
  opacity: 0.75;
}
.libro-editar:hover { opacity: 1; border-color: var(--ocre); }
.recurso-senda-chip.is-sin { opacity: 0.55; }
.libros-vacio {
  font: 400 12px/1.6 "IBM Plex Mono", monospace;
  opacity: 0.7;
  padding: 0.8rem 0.4rem;
  max-width: 520px;
}

/* ─────────── Visor (overlay) ─────────── */
.libro-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: color-mix(in srgb, var(--bg) 88%, #000);
  display: flex; justify-content: center;
}
.libro-sheet {
  width: min(920px, 100%);
  height: 100%;
  display: flex; flex-direction: column;
  background: var(--bg);
}
.libro-top {
  display: flex; align-items: center; gap: 0.7rem;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 2;
  background: var(--bg);
}
.libro-cerrar, .libro-apuntes-btn {
  font: 600 15px/1 "IBM Plex Mono", monospace;
  color: inherit; background: transparent;
  border: 1px solid var(--line); border-radius: 8px;
  padding: 0.4rem 0.6rem; cursor: pointer;
}
.libro-apuntes-btn:hover, .libro-cerrar:hover { border-color: var(--ocre); }
.libro-top-meta { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }
.libro-top-tit { font: 600 13.5px/1.2 "IBM Plex Mono", monospace; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.libro-top-sub { font: 400 11px/1.2 "IBM Plex Mono", monospace; opacity: 0.65; }

.libro-cuerpo {
  flex: 1 1 auto; overflow: auto;
  padding: 1rem; display: flex; flex-direction: column;
  align-items: center; gap: 1rem;
  background: color-mix(in srgb, var(--indigo) 8%, var(--bg));
}
.libro-cargando, .libro-error, .libro-aviso-ocr {
  font: 400 12.5px/1.5 "IBM Plex Mono", monospace;
  padding: 1rem; text-align: center; max-width: 540px;
}
.libro-aviso-ocr {
  color: var(--ocre);
  border: 1px solid var(--ocre);
  border-radius: 8px;
  background: color-mix(in srgb, var(--ocre) 10%, transparent);
}
.libro-error { color: #e88; }

/* ─────────── Página PDF (canvas + texto + highlights) ─────────── */
.libro-page {
  position: relative;
  background: #fff;
  box-shadow: 0 2px 14px rgba(0,0,0,0.35);
  flex: 0 0 auto;
}
.libro-canvas { display: block; position: absolute; inset: 0; }
.libro-highlights { position: absolute; inset: 0; pointer-events: none; }
.libro-hl {
  position: absolute;
  background: color-mix(in srgb, var(--ocre) 38%, transparent);
  border-radius: 2px;
  pointer-events: auto;
  cursor: pointer;
  mix-blend-mode: multiply;
}
.libro-hl.has-nota { box-shadow: inset 0 -2px 0 0 var(--ocre); }

/* Capa de texto pdf.js: spans transparentes seleccionables sobre el canvas. */
.libro-textlayer {
  position: absolute; inset: 0;
  overflow: hidden;
  opacity: 1; line-height: 1;
  text-align: initial;
}
.libro-textlayer > span {
  color: transparent;
  position: absolute;
  white-space: pre;
  cursor: text;
  transform-origin: 0% 0%;
}
.libro-textlayer ::selection { background: color-mix(in srgb, var(--ocre) 40%, transparent); }
.libro-textlayer br::selection { background: transparent; }

/* La selbar reutiliza .lector-selbar (recursos.css); aquí solo aseguramos
   que quede por encima del overlay del visor. */
.libro-selbar { z-index: 1002; }