/* ============================================================
   MP Biblioteca Digital — Estilos Frontend
   ============================================================ */

/* Clase utilitaria — visible solo para lectores de pantalla */
.mp-sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border-width: 0;
}

/* Variables — sistema de diseño Red de Docentes */
:root {
	--mp-color-primary:      #FF7200;   /* naranja marca */
	--mp-color-secondary:    #e56500;   /* naranja oscuro (hover) */
	--mp-color-accent:       #01959A;   /* teal (bordes tarjeta, botón lectura) */
	--mp-color-libre:        #01959A;
	--mp-color-registrado:   #FF7200;
	--mp-color-externo:      #6b7280;
	--mp-color-compra:       #d97706;
	--mp-color-bg:           #f9f9f9;
	--mp-color-border:       #eee;
	--mp-color-card-border:  #01959AD9; /* teal con 85 % opacidad */
	--mp-color-text:         #333;
	--mp-color-muted:        #666;
	--mp-radius:             0px;
	--mp-shadow:             0 1px 3px rgba(0,0,0,.08);
	--mp-shadow-hover:       0 2px 10px rgba(0,0,0,.12);
}

/* ============================================================
   Catálogo — Controles
   ============================================================ */

.mp-biblioteca-wrap,
.mp-single-libro-wrap {
	width: 95%;
	max-width: 1280px;
	margin: 0 auto;
    padding-block-end: var(--padding-block-end, 3rem);
    padding-block-start: var(--padding-block-start, 3rem);
	font-family: "Open Sans", sans-serif;
}

.mp-biblioteca-wrap #breadcrumbs,
.mp-single-libro-wrap #breadcrumbs {
	font-family: "Baskervville", Sans-serif;
	font-size: 1.3rem;
	font-weight: 400;
	margin-bottom: 3rem;
}

.mp-biblioteca-wrap #breadcrumbs a,
.mp-single-libro-wrap #breadcrumbs a {
	color: var( --e-global-color-text );
	margin-bottom: 16px;
}

.mp-breadcrumb {
	font-size: 13px;
	color: var(--mp-color-muted);
	margin-bottom: 16px;
}

.mp-breadcrumb a {
	color: var(--mp-color-primary);
	text-decoration: none;
}

.mp-breadcrumb a:hover { text-decoration: underline; }

.mp-biblioteca-header {
	margin-bottom: 24px;
}

.mp-biblioteca-titulo {
	font-size: 2rem;
	font-weight: 700;
	color: var(--mp-color-text);
	margin: 0 0 4px;
}

.mp-autor-subtitulo {
	font-size: 14px;
	color: var(--mp-color-muted);
	margin: 4px 0 0;
}

/* ---- Toolbar principal (una sola línea) ---- */

.mp-biblioteca-toolbar {
	display: flex;
	align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f9f9f9;
    border: 1px solid #eee;
}

#mp-busqueda-libro {
	flex: 1;
	min-width: 0;
	padding: 10px 14px;
	border: 1px solid var(--mp-color-border);
	border-radius: var(--mp-radius);
	font-size: 14px;
	outline: none;
	transition: border-color .2s;
	height: 40px;
	box-sizing: border-box;
}

#mp-busqueda-libro:focus {
	border-color: var(--mp-color-primary);
	outline: 2px solid var(--mp-color-primary);
	outline-offset: 2px;
	box-shadow: none;
}

.mp-btn-toolbar {
	flex-shrink: 0;
	height: 40px;
	padding: 0 16px;
	border-radius: var(--mp-radius);
	font-size: 14px;
	font-weight: 500;
	cursor: pointer;
	border: 1px solid transparent;
	white-space: nowrap;
	transition: background .15s, border-color .15s, color .15s;
	line-height: 1;
}

.mp-btn-toolbar--primary {
	background: #FF7200 !important;
	color: #fff !important;
	border-color: #FF7200 !important;
}

.mp-btn-toolbar--primary:hover,
.mp-btn-toolbar--primary:focus {
	background: #e56500 !important;
	border-color: #e56500 !important;
	color: #fff !important;
}

.mp-btn-toolbar:focus {
	outline: 2px solid #FF7200;
	outline-offset: 2px;
}

.mp-btn-toolbar--filtros {
	background: #fff !important;
	color: var(--mp-color-text) !important;
	border-color: var(--mp-color-border) !important;
	display: flex;
	align-items: center;
	gap: 6px;
}

.mp-btn-toolbar--filtros:hover,
.mp-btn-toolbar--filtros:focus {
	border-color: #FF7200 !important;
	color: #FF7200 !important;
	background: #fff !important;
}

.mp-btn-toolbar--filtros[aria-expanded="true"] {
	background: var(--mp-color-bg) !important;
	border-color: #FF7200 !important;
	color: #FF7200 !important;
}

.mp-filtros-chevron {
	transition: transform .2s;
}

.mp-btn-toolbar--filtros[aria-expanded="true"] .mp-filtros-chevron {
	transform: rotate(180deg);
}

/* ---- Panel de filtros colapsable ---- */

.mp-filtros-panel {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px;
	padding: 12px 16px;
	background: var(--mp-color-bg);
	border: 1px solid var(--mp-color-border);
	border-radius: var(--mp-radius);
	margin-bottom: 16px;
	animation: mp-slide-down .15s ease;
	align-items: end;
}

.mp-filtros-panel[hidden] {
	display: none;
}

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

/* Campo de filtro con label visible */
.mp-filtro-campo {
	display: flex;
	flex-direction: column;
	gap: 4px;
	flex: 1;
	min-width: 150px;
}

.mp-filtro-campo label {
	font-size: 11px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: .4px;
	color: var(--mp-color-muted);
}

.mp-filtros-panel select {
	height: 36px;
	padding: 0 12px;
	border: 1px solid var(--mp-color-border);
	border-radius: var(--mp-radius);
	font-size: 13px;
	background: #fff;
	cursor: pointer;
	width: 100%;
}

.mp-filtros-panel select:focus {
	outline: 2px solid var(--mp-color-primary);
	outline-offset: 2px;
	border-color: var(--mp-color-primary);
}

.mp-btn-limpiar {
	height: 36px;
	padding: 0 14px;
	background: #fff !important;
	border: 1px solid #FF7200 !important;
	border-radius: var(--mp-radius);
	font-size: 13px;
	cursor: pointer;
	color: #FF7200 !important;
	white-space: nowrap;
	transition: background .15s, color .15s;
	flex-shrink: 0;
	line-height: 1;
}

.mp-btn-limpiar:hover,
.mp-btn-limpiar:focus {
	background: #FF7200 !important;
	border-color: #FF7200 !important;
	color: #fff !important;
}

/* ---- Toggle vista ---- */

.mp-vista-toggle {
	display: flex;
	gap: 2px;
	flex-shrink: 0;
}

.mp-toggle-btn {
	width: 40px;
	height: 40px;
	display: flex;
	align-items: center;
	justify-content: center;
	border: 1px solid var(--mp-color-border);
	border-radius: var(--mp-radius);
	background: #fff;
	cursor: pointer;
	color: var(--mp-color-muted);
	transition: all .15s;
}

.mp-toggle-btn--activo {
	background: #FF7200 !important;
	border-color: #FF7200 !important;
	color: #fff !important;
}

.mp-toggle-btn:not(.mp-toggle-btn--activo):hover {
	border-color: #FF7200 !important;
	color: #FF7200 !important;
	background: #fff !important;
}

.mp-toggle-btn:focus {
	outline: 2px solid #FF7200;
	outline-offset: 2px;
}

.mp-toggle-btn svg {
	width: 20px;
	height: 20px;
	flex-shrink: 0;
}

.mp-resultados-info {
	margin-bottom: 15px;
    font-size: 0.9em;
    color: #666;
}

/* ============================================================
   Grid de tarjetas
   ============================================================ */

.mp-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
	gap: 20px;
}

/* El catálogo principal usa las columnas configuradas */
#mp-catalogo-grid {
	grid-template-columns: repeat(var(--mp-cols, 4), 1fr);
}

@media (max-width: 900px) {
	#mp-catalogo-grid {
		grid-template-columns: repeat(var(--mp-cols-tablet, 3), 1fr);
	}
}

@media (max-width: 480px) {
	#mp-catalogo-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

.mp-libro-card {
	background: #fff;
	border: 1px solid #01959AD9;
	border-radius: var(--mp-radius);
	overflow: hidden;
	transition: box-shadow .2s, transform .2s;
	box-shadow: var(--mp-shadow);
	position: relative; /* necesario para el overlay del enlace */
	padding: 15px;
}

.mp-libro-card:hover {
	box-shadow: var(--mp-shadow-hover);
	transform: translateY(-2px);
}

/*
 * Patrón "card link" accesible:
 * El ::before del enlace del título cubre toda la tarjeta,
 * permitiendo hacer clic en cualquier parte sin anidar <a> dentro de <a>.
 * Los enlaces de autor tienen z-index mayor y son independientemente focusables.
 */
.mp-card-link {
	color: inherit;
	text-decoration: none;
}

.mp-card-link::before {
	content: '';
	position: absolute;
	inset: 0;
	z-index: 0;
	border-radius: var(--mp-radius);
}

/* Anillo de foco visible en el enlace del título */
.mp-card-link:focus {
	outline: none;
}

.mp-card-link:focus::before {
	outline: 3px solid var(--mp-color-primary);
	outline-offset: 2px;
}

.mp-libro-portada {
	position: relative;
    background: var(--mp-color-bg);
    padding-top: 140%;
    overflow: hidden;
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    margin-right: 0;
    margin-bottom: 15px;
    border-radius: 4px;
}

.mp-libro-portada img {
	position: absolute;
	top: 0; left: 0;
	width: 100%; height: 100%;
	object-fit: cover;
	display: block;
}

.mp-libro-portada-placeholder {
	position: absolute;
	top: 0; left: 0;
	width: 100%; height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(135deg, #fff3e6 0%, #ffe0cc 100%);
}

.mp-libro-portada-placeholder span {
	font-size: 3rem;
	font-weight: 700;
	color: var(--mp-color-primary);
	text-transform: uppercase;
}

.mp-badge {
	position: absolute;
	top: 8px; right: 8px;
	padding: 2px 8px;
	border-radius: 9999px;
	font-size: 11px;
	font-weight: 600;
	color: #fff;
	letter-spacing: .3px;
}

.mp-badge--libre      { background: var(--mp-color-libre); }
.mp-badge--registrado { background: var(--mp-color-registrado); }
.mp-badge--externo    { background: var(--mp-color-externo); }

.mp-libro-info {
	padding: 12px;
}

.mp-libro-titulo {
	font-size: 14px;
	font-weight: 600;
	margin: 0 0 6px;
	line-height: 1.3;
	color: var(--mp-color-text);
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.mp-libro-autor,
.mp-libro-area,
.mp-libro-anio {
	font-size: 12px;
	color: var(--mp-color-muted);
	margin: 2px 0;
}

.mp-libro-autor { font-style: italic; }

/* El enlace del autor queda encima del overlay del enlace de título */
.mp-autor-link {
	position: relative;
	z-index: 1;
	color: var(--mp-color-primary);
	text-decoration: none;
}

.mp-autor-link:hover { text-decoration: underline; }

.mp-autor-link:focus {
	outline: 2px solid var(--mp-color-primary);
	outline-offset: 2px;
	border-radius: 2px;
}

/* ============================================================
   Vista lista (tabla)
   ============================================================ */

.mp-lista-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 14px;
}

.mp-lista-table th {
	text-align: left;
	padding: 10px 12px;
	background: var(--mp-color-bg);
	border-bottom: 2px solid var(--mp-color-border);
	font-weight: 600;
	color: var(--mp-color-text);
}

.mp-lista-table td {
	padding: 10px 12px;
	border-bottom: 1px solid var(--mp-color-border);
	color: var(--mp-color-text);
	vertical-align: middle;
}

.mp-lista-table tr:hover td {
	background: var(--mp-color-bg);
}

/* ============================================================
   Estado de carga / sin resultados
   ============================================================ */

.mp-sin-resultados {
	grid-column: 1 / -1;
	text-align: center;
	color: var(--mp-color-muted);
	padding: 40px 0;
}

.mp-cargando {
	text-align: center;
	padding: 20px;
	color: var(--mp-color-muted);
}

.mp-spinner {
	display: inline-block;
	width: 18px;
	height: 18px;
	border: 2px solid var(--mp-color-border);
	border-top-color: var(--mp-color-primary);
	border-radius: 50%;
	animation: mp-spin .6s linear infinite;
	vertical-align: middle;
	margin-right: 6px;
}

@keyframes mp-spin {
	to { transform: rotate(360deg); }
}

/* ============================================================
   Paginación
   ============================================================ */

#mp-paginacion {
	margin-top: 32px;
}

.mp-paginacion {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 4px;
	flex-wrap: wrap;
}

.mp-pag-btn {
	min-width: 40px;
	height: 40px;
	padding: 0 10px;
	border: 1px solid var(--mp-color-border);
	border-radius: var(--mp-radius);
	background: #fff;
	color: var(--mp-color-text);
	font-size: 14px;
	font-weight: 500;
	cursor: pointer;
	transition: background .15s, border-color .15s, color .15s;
	display: flex;
	align-items: center;
	justify-content: center;
	line-height: 1;
}

.mp-pag-btn:hover:not(:disabled) {
	border-color: var(--mp-color-primary);
	color: var(--mp-color-primary);
	background: #fff3e6;
}

.mp-pag-btn:focus {
	outline: 2px solid var(--mp-color-primary);
	outline-offset: 2px;
}

.mp-pag-btn--activo {
	background: var(--mp-color-primary);
	border-color: var(--mp-color-primary);
	color: #fff;
	cursor: default;
}

.mp-pag-btn--activo:hover {
	background: var(--mp-color-primary);
	color: #fff;
}

.mp-pag-btn--nav {
	font-size: 18px;
	font-weight: 400;
	color: var(--mp-color-muted);
}

.mp-pag-ellipsis {
	min-width: 32px;
	height: 40px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--mp-color-muted);
	font-size: 14px;
	user-select: none;
}

/* ============================================================
   Breadcrumb (Yoast SEO)
   ============================================================ */

.mp-breadcrumb-wrap {
	margin-bottom: 16px;
	font-size: 13px;
	font-family: "Open Sans", sans-serif;
}

/* Yoast genera .breadcrumb-trail como wrapper raíz */
.mp-breadcrumb-wrap .breadcrumb-trail,
.mp-biblioteca-wrap .breadcrumb-trail {
	display: block;
	color: #666;
	line-height: 1.6;
}

.mp-breadcrumb-wrap .breadcrumb-trail a,
.mp-biblioteca-wrap .breadcrumb-trail a {
	color: #FF7200 !important;
	text-decoration: none !important;
}

.mp-breadcrumb-wrap .breadcrumb-trail a:hover,
.mp-biblioteca-wrap .breadcrumb-trail a:hover {
	text-decoration: underline !important;
}

/* El último item (página actual) no tiene enlace */
.mp-breadcrumb-wrap .breadcrumb_last,
.mp-biblioteca-wrap .breadcrumb_last,
.mp-single-libro-wrap .breadcrumb_last strong {
	color: var( --e-global-color-secondary );
}

/* Compatibilidad con la child theme: el breadcrumb se pone en un <div> sin clase */
.mp-biblioteca-wrap > div > .breadcrumb-trail {
	display: block;
	font-size: 13px;
	font-family: "Open Sans", sans-serif;
	color: #666;
	margin-bottom: 16px;
	line-height: 1.6;
}

.mp-biblioteca-wrap > div > .breadcrumb-trail a {
	color: #FF7200 !important;
	text-decoration: none !important;
}

.mp-biblioteca-wrap > div > .breadcrumb-trail a:hover {
	text-decoration: underline !important;
}

/* ============================================================
   Single libro
   ============================================================ */

.mp-single-libro-wrap {
	max-width: 1100px;
	margin: 0 auto;
	padding: 32px 16px;
	font-family: "Open Sans", sans-serif;
}

.mp-single-libro-layout {
	display: grid;
	grid-template-columns: 1fr 2fr;
	gap: 40px;
	margin-bottom: 48px;
}

@media (max-width: 680px) {
	.mp-single-libro-layout {
		grid-template-columns: 1fr;
	}
}

.mp-single-portada-img {
	width: 100%;
	height: auto;
	border-radius: var(--mp-radius);
	box-shadow: var(--mp-shadow-hover);
	display: block;
}

.mp-single-portada-placeholder {
	width: 100%;
	padding-top: 140%;
	position: relative;
	background: linear-gradient(135deg, #fff3e6 0%, #ffe0cc 100%);
	border-radius: var(--mp-radius);
	overflow: hidden;
}

.mp-single-portada-placeholder span {
	position: absolute;
	top: 50%; left: 50%;
	transform: translate(-50%, -50%);
	font-size: 4rem;
	font-weight: 700;
	color: var(--mp-color-primary);
}

.mp-single-titulo {
	font-size: 1.75rem;
	font-weight: 700;
	color: var(--mp-color-text);
	margin: 0 0 20px;
	line-height: 1.2;
}

.mp-single-meta {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 6px 16px;
	margin: 0 0 20px;
	font-size: 14px;
}

.mp-single-meta dt {
	color: var(--mp-color-muted);
	font-weight: 600;
	white-space: nowrap;
}

.mp-single-meta dd {
	color: var(--mp-color-text);
	margin: 0;
}

.mp-single-meta dd a {
	color: var(--mp-color-primary);
	text-decoration: none;
}

.mp-single-descripcion {
	font-size: 14px;
	line-height: 1.7;
	color: var(--mp-color-text);
	margin-bottom: 24px;
	border-left: 3px solid var(--mp-color-border);
	padding-left: 16px;
}

/* Botones de acción */
.mp-single-acciones {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
}

.mp-btn {
	display: inline-block;
	padding: 12px 22px;
	border-radius: var(--mp-radius);
	font-size: 14px;
	font-weight: 600;
	cursor: pointer;
	text-decoration: none;
	border: none;
	transition: opacity .2s, transform .1s;
	line-height: 1;
}

.mp-btn:hover {
	opacity: .88;
	transform: translateY(-1px);
}

.mp-btn--descarga  { background: var(--mp-color-primary);  color: #fff; }
.mp-btn--lectura   { background: var(--mp-color-accent);    color: #fff; }
.mp-btn--externo   { background: var(--mp-color-externo);   color: #fff; }
.mp-btn--login     { background: #333;                      color: #fff; }
.mp-btn--secondary { background: transparent; border: 2px solid var(--mp-color-accent); color: var(--mp-color-accent); padding: 10px 20px; }
.mp-btn--compra    { background: var(--mp-color-compra);    color: #fff; }

/* Libros relacionados */
.mp-relacionados {
	border-top: 1px solid var(--mp-color-border);
	padding-top: 32px;
}

.mp-relacionados-titulo {
	font-size: 1.25rem;
	font-weight: 700;
	margin: 0 0 20px;
	color: var(--mp-color-text);
}

.mp-grid--relacionados {
	grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 900px) {
	.mp-grid--relacionados {
		grid-template-columns: repeat(3, 1fr);
	}
}
@media (max-width: 480px) {
	.mp-grid--relacionados {
		grid-template-columns: repeat(2, 1fr);
	}
}

/* ============================================================
   Modal visor PDF
   ============================================================ */

.mp-modal {
	position: fixed;
	inset: 0;
	z-index: 99999;
	display: flex;
	align-items: center;
	justify-content: center;
}

.mp-modal-overlay {
	position: absolute;
	inset: 0;
	background: rgba(0,0,0,.6);
}

.mp-modal-contenido {
	position: relative;
	width: 90vw;
	height: 90vh;
	background: #fff;
	border-radius: var(--mp-radius);
	overflow: hidden;
	display: flex;
	flex-direction: column;
}

.mp-modal-cerrar {
	position: absolute;
	top: 10px; right: 12px;
	background: #fff;
	border: none;
	border-radius: 50%;
	width: 32px; height: 32px;
	font-size: 20px;
	cursor: pointer;
	z-index: 1;
	line-height: 1;
	box-shadow: var(--mp-shadow);
	display: flex;
	align-items: center;
	justify-content: center;
}

#mp-visor-iframe {
	flex: 1;
	width: 100%;
	height: 100%;
	border: none;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 600px) {
	.mp-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.mp-biblioteca-toolbar {
		flex-wrap: wrap;
	}

	#mp-busqueda-libro {
		flex: 1 1 100%;
		order: -1;
	}

	.mp-btn-toolbar--primary {
		flex: 1;
	}

	.mp-filtros-panel {
		flex-direction: column;
		align-items: stretch;
	}

	.mp-filtro-campo {
		min-width: 0;
		width: 100%;
	}
}
