/* ==========================================================================
   Club de lectura de Laguarres — Hoja de estilos
   Tipografía, colores y diseño moderno, limpio y adaptativo
   ========================================================================== */

:root {
  --color-primario: #1e3a5f;
  --color-primario-suave: #eef3f8;
  --color-primario-oscuro: #112238;
  --color-acento: #a8422b;
  --color-acento-hover: #8f3521;
  --color-fondo: #f8f9fa;
  --color-superficie: #ffffff;
  --color-texto: #20262e;
  --color-texto-secundario: #5a6575;
  --color-borde: #e2e8f0;
  --color-borde-foco: #3b82f6;
  --sombra-sutil: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --sombra-tarjeta: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --sombra-elevada: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --radio-borde: 10px;
  --radio-redondo: 9999px;
  --fuente-principal: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --fuente-editorial: 'Playfair Display', Georgia, serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--fuente-principal);
  background-color: var(--color-fondo);
  color: var(--color-texto);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.contenedor {
  width: 100%;
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Encabezado */
.cabecera {
  background-color: var(--color-superficie);
  border-bottom: 1px solid var(--color-borde);
  padding: 22px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--sombra-sutil);
}

.cabecera-contenido {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 16px;
}

.icono-emblema {
  background: linear-gradient(135deg, var(--color-primario), #2c5282);
  color: #fff;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(30, 58, 95, 0.25);
  flex-shrink: 0;
}

.subtitulo-institucional {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--color-texto-secundario);
  margin-bottom: 2px;
}

.titulo-sitio {
  font-family: var(--fuente-editorial);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--color-primario-oscuro);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.acciones-cabecera {
  display: flex;
  align-items: center;
  gap: 12px;
}

.boton-favoritos-cabecera {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: #fff1f0;
  border: 1px solid #fecdd3;
  color: var(--color-acento);
  border-radius: var(--radio-borde);
  padding: 8px 16px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: var(--sombra-sutil);
}

.boton-favoritos-cabecera:hover {
  background-color: #ffe4e6;
  border-color: #fda4af;
  transform: translateY(-1px);
}

.contador-favoritos-pildora {
  background-color: var(--color-acento);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  min-width: 20px;
  height: 20px;
  border-radius: var(--radio-redondo);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
}

.contador-catalogo {
  background-color: var(--color-primario-suave);
  border: 1px solid #d0e0f0;
  border-radius: var(--radio-borde);
  padding: 8px 18px;
  text-align: right;
  flex-shrink: 0;
}

.contador-numero {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primario);
  line-height: 1.1;
}

.contador-etiqueta {
  font-size: 0.78rem;
  color: var(--color-texto-secundario);
}

/* Buscador principal */
.seccion-busqueda {
  margin: 28px 0 20px 0;
}

.caja-buscador {
  position: relative;
  display: flex;
  align-items: center;
  background-color: var(--color-superficie);
  border: 2px solid var(--color-borde);
  border-radius: 14px;
  padding: 4px 16px;
  transition: all 0.2s ease;
  box-shadow: var(--sombra-sutil);
}

.caja-buscador:focus-within {
  border-color: var(--color-primario);
  box-shadow: 0 0 0 4px rgba(30, 58, 95, 0.12);
}

.icono-lupa {
  color: var(--color-texto-secundario);
  margin-right: 12px;
  flex-shrink: 0;
}

.caja-buscador input {
  width: 100%;
  border: none;
  background: transparent;
  padding: 12px 6px;
  font-size: 1.05rem;
  color: var(--color-texto);
  font-family: inherit;
  outline: none;
}

.caja-buscador input::placeholder {
  color: #94a3b8;
}

.boton-limpiar-busqueda {
  background: #e2e8f0;
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  color: #475569;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all 0.15s;
}

.boton-limpiar-busqueda:hover {
  background: #cbd5e1;
  color: #0f172a;
}

/* Disposición de columnas */
.disposicion-cuadricula {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 50px;
}

/* Panel de filtros lateral */
.panel-filtros {
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio-borde);
  padding: 22px;
  box-shadow: var(--sombra-sutil);
  position: sticky;
  top: 110px;
  max-height: calc(100vh - 130px);
  overflow-y: auto;
}

.cabecera-filtros {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-borde);
  margin-bottom: 18px;
}

.titulo-filtros-area {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primario);
}

.titulo-filtros-area h2 {
  font-size: 1.15rem;
  font-weight: 700;
}

.boton-enlace {
  background: none;
  border: none;
  color: var(--color-acento);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
}

.boton-enlace:hover {
  text-decoration: underline;
}

.bloque-filtro {
  margin-bottom: 22px;
}

.bloque-filtro:last-child {
  margin-bottom: 0;
}

.cabecera-bloque-filtro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.etiqueta-filtro {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primario-oscuro);
  margin-bottom: 8px;
}

.valor-rango {
  font-weight: 700;
  color: var(--color-acento);
}

.insignia-conteo {
  font-size: 0.75rem;
  background-color: var(--color-primario-suave);
  color: var(--color-primario);
  padding: 2px 8px;
  border-radius: var(--radio-redondo);
  font-weight: 600;
}

/* Control deslizante doble para ejemplares */
.rango-doble-contenedor {
  position: relative;
  height: 24px;
  margin: 10px 0 14px 0;
}

.pista-rango {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  height: 6px;
  width: 100%;
  background-color: #e2e8f0;
  border-radius: 4px;
  z-index: 1;
}

.rango-doble-contenedor input[type="range"] {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  pointer-events: none;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  z-index: 2;
  margin: 0;
}

.rango-doble-contenedor input[type="range"]::-webkit-slider-thumb {
  pointer-events: auto;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primario);
  border: 2px solid #fff;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  transition: transform 0.1s;
}

.rango-doble-contenedor input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.rango-entradas {
  display: flex;
  gap: 12px;
}

.campo-numero {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  background: #f1f5f9;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--color-borde);
}

.campo-numero span {
  font-size: 0.8rem;
  color: var(--color-texto-secundario);
}

.campo-numero input {
  width: 100%;
  background: transparent;
  border: none;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-texto);
  outline: none;
}

/* Buscador interno de autores y bibliotecas */
.sub-buscador {
  margin-bottom: 8px;
}

.sub-buscador input {
  width: 100%;
  padding: 7px 10px;
  font-size: 0.82rem;
  border: 1px solid var(--color-borde);
  border-radius: 6px;
  background-color: #f8fafc;
  outline: none;
  font-family: inherit;
}

.sub-buscador input:focus {
  border-color: var(--color-primario);
  background: #fff;
}

.lista-seleccionable {
  max-height: 180px;
  overflow-y: auto;
  border: 1px solid var(--color-borde);
  border-radius: 6px;
  background: #fff;
  padding: 4px;
}

.opcion-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 4px;
  font-size: 0.82rem;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}

.opcion-checkbox:hover {
  background-color: #f1f5f9;
}

.opcion-checkbox input {
  accent-color: var(--color-primario);
  cursor: pointer;
}

.texto-opcion {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.acciones-rapidas-filtro {
  margin-top: 6px;
  display: flex;
  justify-content: flex-end;
}

.btn-micro {
  background: none;
  border: none;
  color: #64748b;
  font-size: 0.72rem;
  cursor: pointer;
  padding: 2px 4px;
}

.btn-micro:hover {
  color: var(--color-acento);
  text-decoration: underline;
}

/* Grupo segmentado para público */
.grupo-botones-segmentados {
  display: flex;
  background: #e2e8f0;
  padding: 3px;
  border-radius: 8px;
  gap: 2px;
}

.btn-segmento {
  flex: 1;
  background: none;
  border: none;
  padding: 6px 4px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #475569;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-segmento.activo {
  background: #fff;
  color: var(--color-primario);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Área de resultados */
.area-resultados {
  min-width: 0;
}

.barra-herramientas-resultados {
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio-borde);
  padding: 14px 18px;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: var(--sombra-sutil);
}

.recuento-destacado {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--color-primario-oscuro);
}

.etiquetas-activas {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.etiqueta-pildora {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: var(--radio-redondo);
  padding: 2px 10px;
  font-size: 0.75rem;
  color: #334155;
  font-weight: 500;
}

.etiqueta-pildora button {
  background: none;
  border: none;
  cursor: pointer;
  color: #94a3b8;
  font-weight: bold;
}

.etiqueta-pildora button:hover {
  color: var(--color-acento);
}

.controles-vista {
  display: flex;
  align-items: center;
  gap: 8px;
}

.etiqueta-orden {
  font-size: 0.85rem;
  color: var(--color-texto-secundario);
  font-weight: 500;
}

.selector-orden {
  border: 1px solid var(--color-borde);
  background-color: #fff;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--color-texto);
  outline: none;
  cursor: pointer;
}

.selector-orden:focus {
  border-color: var(--color-primario);
}

/* Tarjeta vacía */
.tarjeta-vacia {
  background: var(--color-superficie);
  border: 1px dashed #cbd5e1;
  border-radius: var(--radio-borde);
  padding: 50px 20px;
  text-align: center;
  color: var(--color-texto-secundario);
}

.icono-vacio {
  font-size: 3rem;
  margin-bottom: 12px;
}

.tarjeta-vacia h3 {
  font-size: 1.2rem;
  color: var(--color-primario-oscuro);
  margin-bottom: 6px;
}

.tarjeta-vacia p {
  font-size: 0.9rem;
  margin-bottom: 18px;
}

.boton-primario {
  background-color: var(--color-primario);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
}

.boton-primario:hover {
  background-color: var(--color-primario-oscuro);
}

/* Cuadrícula de libros */
.cuadricula-libros {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
}

.tarjeta-libro {
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio-borde);
  padding: 20px;
  box-shadow: var(--sombra-sutil);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  position: relative;
}

.tarjeta-libro:hover {
  transform: translateY(-2px);
  box-shadow: var(--sombra-tarjeta);
  border-color: #cbd5e1;
}

.tarjeta-cabeza {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.insignia-ejemplares {
  background-color: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radio-redondo);
  white-space: nowrap;
  flex-shrink: 0;
}

.insignia-ejemplares.pocos {
  background-color: #fff7ed;
  color: #9a3412;
  border-color: #fed7aa;
}

.insignia-ejemplares.muchos {
  background-color: #eff6ff;
  color: #1e40af;
  border-color: #bfdbfe;
}

.tarjeta-cabeza-acciones {
  display: flex;
  align-items: center;
  gap: 8px;
}

.boton-favorito-tarjeta {
  background: none;
  border: 1px solid #e2e8f0;
  color: #94a3b8;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  background-color: #fff;
}

.boton-favorito-tarjeta:hover {
  color: var(--color-acento);
  border-color: #fca5a5;
  background-color: #fff1f2;
  transform: scale(1.1);
}

.boton-favorito-tarjeta.es-favorito {
  color: var(--color-acento);
  border-color: #f87171;
  background-color: #fee2e2;
}

.boton-favorito-tarjeta.es-favorito svg {
  fill: var(--color-acento);
}

.etiquetas-publico {
  display: flex;
  gap: 4px;
}

.pildora-publico {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: #f1f5f9;
  color: #475569;
}

.pildora-publico.inf { background: #fdf2f8; color: #9d174d; }
.pildora-publico.juv { background: #f0fdfa; color: #115e59; }
.pildora-publico.adul { background: #f8fafc; color: #334155; }

.titulo-libro {
  font-family: var(--fuente-editorial);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--color-primario-oscuro);
  line-height: 1.35;
  margin-bottom: 6px;
}

.autor-libro {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-acento);
  margin-bottom: 14px;
}

.tarjeta-cuerpo {
  margin-bottom: 14px;
}

.tarjeta-pie {
  border-top: 1px solid #f1f5f9;
  padding-top: 12px;
  margin-top: auto;
  font-size: 0.82rem;
}

.fila-biblioteca {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--color-primario);
  margin-bottom: 6px;
}

.fila-contacto {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--color-texto-secundario);
  font-size: 0.78rem;
}

.enlace-contacto {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: inherit;
  text-decoration: none;
}

.enlace-contacto:hover {
  color: var(--color-primario);
  text-decoration: underline;
}

/* Paginación */
.paginacion-contenedor {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 36px;
}

.btn-paginacion {
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primario);
  cursor: pointer;
  transition: all 0.12s;
}

.btn-paginacion:hover:not(:disabled) {
  background-color: var(--color-primario-suave);
  border-color: #cbd5e1;
}

.btn-paginacion:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.texto-paginacion {
  font-size: 0.88rem;
  color: var(--color-texto-secundario);
  font-weight: 500;
}

/* Pie de página */
.pie-pagina {
  background-color: #111827;
  color: #9ca3af;
  border-top: 1px solid #1f2937;
  padding: 36px 0;
  margin-top: 60px;
  font-size: 0.88rem;
}

.pie-contenido {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
}

.pie-titulo {
  font-family: var(--fuente-editorial);
  font-size: 1.15rem;
  color: #f3f4f6;
  font-weight: 700;
  margin-bottom: 6px;
}

.pie-desc {
  max-width: 460px;
  line-height: 1.5;
}

.texto-atenuado {
  color: #6b7280;
  font-size: 0.78rem;
  margin-top: 4px;
}

.oculto {
  display: none !important;
}

/* Modal de favoritos */
.superposicion-modal {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 0.2s ease;
}

.modal-favoritos {
  background-color: #fff;
  border-radius: 14px;
  width: 100%;
  max-width: 640px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--color-borde);
  overflow: hidden;
  animation: slideUp 0.25s ease;
}

.cabecera-modal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-borde);
  background-color: #fafbfc;
}

.barra-orden-favoritos {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  background-color: #f1f5f9;
  border-bottom: 1px solid var(--color-borde);
  font-size: 0.82rem;
  color: var(--color-texto-secundario);
  gap: 10px;
}

.selector-orden-micro {
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 0.82rem;
  font-family: inherit;
  background-color: #fff;
  color: var(--color-texto);
  cursor: pointer;
  outline: none;
}

.selector-orden-micro:focus {
  border-color: var(--color-primario);
}

.titulo-modal-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.titulo-modal-area h2 {
  font-family: var(--fuente-editorial);
  font-size: 1.25rem;
  color: var(--color-primario-oscuro);
}

.boton-cerrar-modal {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: #64748b;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.boton-cerrar-modal:hover {
  background-color: #e2e8f0;
  color: #0f172a;
}

.acciones-cabecera-modal {
  display: flex;
  align-items: center;
  gap: 10px;
}

.boton-favorito-modal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #ffffff;
  border: 1px solid #cbd5e1;
  color: #475569;
  padding: 6px 14px;
  border-radius: var(--radio-redondo);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.boton-favorito-modal:hover {
  border-color: #fca5a5;
  background-color: #fff1f2;
  color: var(--color-acento);
}

.boton-favorito-modal.es-favorito {
  background-color: #fee2e2;
  border-color: #f87171;
  color: var(--color-acento);
}

.boton-favorito-modal.es-favorito svg {
  fill: var(--color-acento);
}

.cuerpo-modal {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

.lista-favoritos {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.item-favorito {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--color-borde);
  border-radius: 8px;
  background-color: #f8fafc;
  transition: background 0.15s;
}

.item-favorito:hover {
  background-color: #f1f5f9;
}

.controles-orden-favorito {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}

.btn-orden-fav {
  background-color: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  width: 24px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: #475569;
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1;
}

.btn-orden-fav:hover:not(:disabled) {
  background-color: var(--color-primario);
  color: #ffffff;
  border-color: var(--color-primario);
}

.btn-orden-fav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  background-color: #f1f5f9;
}

.info-item-favorito {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.titulo-item-favorito {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primario-oscuro);
  line-height: 1.3;
}

.autor-item-favorito {
  font-size: 0.85rem;
  color: var(--color-acento);
  font-weight: 600;
}

.etiquetas-meta-favorito {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.etiquetas-meta-favorito .insignia-meta-detalle {
  font-size: 0.72rem;
  padding: 2px 7px;
}

.acciones-item-favorito {
  margin-top: 4px;
}

.btn-sinopsis-favorito {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-primario);
  font-size: 0.78rem;
  font-weight: 600;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: color 0.15s;
}

.btn-sinopsis-favorito:hover {
  color: var(--color-acento);
  text-decoration: underline;
}

.boton-quitar-favorito {
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.boton-quitar-favorito:hover {
  color: var(--color-acento);
  background-color: #fee2e2;
}

.vacio-favoritos {
  text-align: center;
  padding: 40px 10px;
  color: var(--color-texto-secundario);
}

.vacio-favoritos svg {
  color: #cbd5e1;
  margin-bottom: 12px;
}

.vacio-favoritos h3 {
  font-size: 1.1rem;
  color: var(--color-primario-oscuro);
  margin-bottom: 6px;
}

.pie-modal {
  padding: 16px 24px;
  border-top: 1px solid var(--color-borde);
  background-color: #fafbfc;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.acciones-secundarias-favoritos {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.btn-micro-secundario {
  background: none;
  border: 1px solid #cbd5e1;
  background-color: #ffffff;
  color: #475569;
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-micro-secundario:hover {
  background-color: #f1f5f9;
  color: var(--color-primario);
}

.btn-micro-secundario.peligro {
  border-color: #fecaca;
  color: #b91c1c;
}

.btn-micro-secundario.peligro:hover {
  background-color: #fee2e2;
  border-color: #f87171;
}

.boton-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: #25d366;
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.98rem;
  padding: 12px 20px;
  border-radius: 8px;
  transition: all 0.15s ease;
  box-shadow: 0 4px 10px rgba(37, 211, 102, 0.25);
}

.boton-whatsapp:hover {
  background-color: #20ba5a;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(37, 211, 102, 0.35);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Modal de sinopsis */
.modal-sinopsis {
  background-color: #fff;
  border-radius: 14px;
  width: 100%;
  max-width: 680px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--color-borde);
  overflow: hidden;
  animation: slideUp 0.25s ease;
}

.cuerpo-modal-sinopsis {
  padding: 24px;
  overflow-y: auto;
}

.layout-sinopsis {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.portada-sinopsis {
  width: 120px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  flex-shrink: 0;
  background-color: #f1f5f9;
}

.meta-sinopsis {
  flex: 1;
}

.titulo-sinopsis-libro {
  font-family: var(--fuente-editorial);
  font-size: 1.35rem;
  color: var(--color-primario-oscuro);
  line-height: 1.3;
  margin-bottom: 6px;
}

.autor-sinopsis-libro {
  font-size: 1rem;
  color: var(--color-acento);
  font-weight: 600;
  margin-bottom: 12px;
}

.etiquetas-meta-libro {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.insignia-meta-detalle {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radio-redondo);
  background-color: #f1f5f9;
  color: #334155;
  border: 1px solid #e2e8f0;
}

.insignia-meta-detalle.genero {
  background-color: #f0fdf4;
  color: #166534;
  border-color: #bbf7d0;
}

.insignia-meta-detalle.paginas {
  background-color: #eff6ff;
  color: #1e40af;
  border-color: #bfdbfe;
}

.texto-sinopsis {
  font-size: 0.95rem;
  line-height: 1.7;
  color: #334155;
  white-space: pre-line;
  border-top: 1px solid #f1f5f9;
  padding-top: 16px;
}

.boton-ver-sinopsis {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--color-primario);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  padding: 4px 0;
  margin-top: 4px;
}

.boton-ver-sinopsis:hover {
  color: var(--color-acento);
  text-decoration: underline;
}

.fila-meta-tarjeta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.insignia-genero-tarjeta {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 600;
  color: #047857;
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  padding: 2px 8px;
  border-radius: var(--radio-redondo);
}

.insignia-paginas-tarjeta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.74rem;
  color: #1e40af;
  background-color: #eff6ff;
  border: 1px solid #bfdbfe;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radio-redondo);
}

/* Resaltado de coincidencias */
mark {
  background-color: #fef08a;
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
}

/* Responsive y colapso de filtros en móvil */
.barra-alternar-filtros-movil {
  display: none;
  margin-bottom: 12px;
}

.boton-toggle-filtros {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio-borde);
  padding: 12px 16px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primario-oscuro);
  cursor: pointer;
  box-shadow: var(--sombra-sutil);
  transition: all 0.2s ease;
}

.boton-toggle-filtros:hover {
  background-color: var(--color-primario-suave);
  border-color: #cbd5e1;
}

.icono-toggle-filtros {
  color: var(--color-primario);
  display: flex;
  align-items: center;
}

.texto-toggle-filtros {
  flex: 1;
  text-align: left;
}

.insignia-filtros-activos {
  background-color: var(--color-acento);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radio-redondo);
}

.flecha-toggle {
  color: var(--color-texto-secundario);
  transition: transform 0.25s ease;
}

.boton-toggle-filtros.abierto .flecha-toggle {
  transform: rotate(180deg);
}

@media (max-width: 960px) {
  .disposicion-cuadricula {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .barra-alternar-filtros-movil {
    display: block;
  }
  
  .panel-filtros {
    position: static;
    max-height: none;
    margin-bottom: 14px;
    padding: 16px 18px;
    transition: all 0.25s ease;
  }

  /* Estado colapsado por defecto en móvil */
  .panel-filtros.colapsado-movil {
    display: none;
  }

  .panel-filtros.expandido-movil {
    display: block;
    animation: aparecerSuave 0.2s ease forwards;
  }
  
  .cabecera-contenido {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .acciones-cabecera {
    width: 100%;
    justify-content: space-between;
  }
  
  .contador-catalogo {
    align-self: auto;
  }

  .cuadricula-libros {
    grid-template-columns: 1fr;
  }
}

@keyframes aparecerSuave {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Chatbot Asesor Literario IA (gpt-5.4-mini + Embeddings)
   ========================================================================== */
.boton-flotante-chat {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--color-primario);
  color: #ffffff;
  border: none;
  border-radius: 50px;
  padding: 12px 20px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(27, 42, 74, 0.35);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.boton-flotante-chat:hover {
  background-color: var(--color-primario-oscuro);
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 28px rgba(27, 42, 74, 0.45);
}

.icono-chat {
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel-chat-flotante {
  position: fixed;
  bottom: 84px;
  right: 24px;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: 540px;
  max-height: calc(100vh - 120px);
  background-color: #ffffff;
  border-radius: 16px;
  border: 1px solid var(--color-borde);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.25);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: aparecerSuave 0.25s ease forwards;
}

.cabecera-chat {
  padding: 14px 16px;
  background-color: var(--color-primario);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  z-index: 2;
}

.info-cabecera-chat {
  display: flex;
  align-items: center;
  gap: 10px;
}

.avatar-chat {
  font-size: 1.4rem;
  line-height: 1;
}

.info-cabecera-chat h3 {
  font-size: 0.98rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
}

.subtitulo-chat {
  font-size: 0.72rem;
  color: #cbd5e1;
  display: block;
}

.btn-cerrar-chat {
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px;
  opacity: 0.8;
  transition: opacity 0.15s;
}

.btn-cerrar-chat:hover {
  opacity: 1;
}

.cuerpo-mensajes-chat {
  flex: 1 1 auto;
  padding: 16px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background-color: #f8fafc;
  min-height: 0;
}

.mensaje-chat {
  display: flex;
  flex-direction: column;
  max-width: 88%;
}

.mensaje-chat.usuario {
  align-self: flex-end;
}

.mensaje-chat.asistente {
  align-self: flex-start;
}

.burbuja-chat {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.45;
}

.mensaje-chat.usuario .burbuja-chat {
  background-color: var(--color-primario);
  color: #ffffff;
  border-bottom-right-radius: 2px;
}

.mensaje-chat.asistente .burbuja-chat {
  background-color: #ffffff;
  color: var(--color-texto);
  border: 1px solid var(--color-borde);
  border-bottom-left-radius: 2px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.sugerencias-rapidas-chat {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.chip-pregunta {
  background-color: #ffffff;
  border: 1px solid var(--color-borde);
  border-radius: var(--radio-redondo);
  padding: 4px 10px;
  font-size: 0.75rem;
  color: var(--color-primario);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.chip-pregunta:hover {
  background-color: #eff6ff;
  border-color: #bfdbfe;
  transform: translateY(-1px);
}

.tarjetas-sugerencias-chat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}

.item-sugerencia-libro {
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.info-sugerencia-libro {
  flex: 1;
  min-width: 0;
}

.tit-sugerencia-libro {
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--color-primario-oscuro);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sub-sugerencia-libro {
  font-size: 0.72rem;
  color: var(--color-acento);
}

.acciones-sugerencia-libro {
  display: flex;
  gap: 4px;
}

.btn-accion-chat {
  background-color: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 3px 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primario);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-accion-chat:hover {
  background-color: var(--color-primario);
  color: #ffffff;
}

.formulario-chat {
  display: flex;
  padding: 10px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  background-color: #ffffff;
  border-top: 1px solid var(--color-borde);
  gap: 8px;
  flex-shrink: 0;
  z-index: 2;
}

.formulario-chat input {
  flex: 1;
  border: 1px solid var(--color-borde);
  border-radius: 20px;
  padding: 8px 14px;
  font-size: 16px; /* Evita zoom automático en Safari iOS */
  font-family: inherit;
  outline: none;
}

.formulario-chat input:focus {
  border-color: var(--color-primario);
}

.formulario-chat button {
  background-color: var(--color-primario);
  color: #ffffff;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s;
}

.formulario-chat button:hover:not(:disabled) {
  background-color: var(--color-acento);
}

.formulario-chat button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (max-width: 600px) {
  .panel-chat-flotante {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    width: 100dvw;
    height: 100vh;
    height: 100dvh;
    max-width: 100vw;
    max-height: 100dvh;
    border-radius: 0;
    border: none;
    z-index: 1001;
  }

  .cabecera-chat {
    padding-top: calc(14px + env(safe-area-inset-top, 0px));
  }
}