:root {
    /* Colores */
    --color-principal: #032A53;
    --color-secundario: #f8f8f8;
    --color-texto: #0A0C1C;
    --color-texto-secundario: #97989F;
    --color-hover: #e0e0e0;
    --color-fondo: #FFFFFF;
    --color-borde: #E8E8EA;
    --color-paginacion: #f5f5f5;
    --color-paginacion-hover: #e0e0e0;
    --color-paginacion-activa: #032A53;
    --color-boton-reset-hover: #e0e0e0;

    /* Tamaños */
    --tamano-h1: 3.1rem;
    --tamano-h1-movil: 2rem;
    --tamano-texto-info: 1.2rem;
    --tamano-texto-info-movil: 1rem;
    --tamano-boton: 16px;
    --tamano-link: 18px;
    --tamano-paginacion: 14px;
    --tamano-reset-button: 16px;
    --tamano-featured-title: 24px;
    --tamano-featured-category: 14px;
    --tamano-featured-meta: 16px;
    --tamano-featured-title-movil: 1.6rem;
    --tamano-featured-category-movil: 0.9rem;
}

/* Reset y estilos básicos */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: 'Work Sans', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--color-fondo);
    color: var(--color-texto);
}

/* Título principal */
.h1-articulos {
    text-align: center;
    font-size: var(--tamano-h1);
    color: var(--color-principal);
    margin: 20px 0;
    font-weight: 800;
    text-transform: uppercase;
}

/* Contenedor de filtros (móviles) */
.filter-container {
    display: none; /* Se muestra en móviles */
    flex-direction: column;
    align-items: center;
    padding: 10px;
}

/* Pilares en móvil */
.pilares {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 20px;
    width: 100%;
    max-width: 300px;
}

/* Botones de pilares en móvil */
.pilar {
    padding: 10px 15px;
    background-color: var(--color-secundario);
    color: var(--color-principal);
    border: none;
    border-radius: 8px;
    font-size: var(--tamano-boton);
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.pilar.activo,
.pilar[aria-pressed="true"],
.pilar:hover,
.pilar:focus {
    background-color: var(--color-principal);
    color: white;
    outline: none;
}

/* Dropdown de subcategorías en móvil */
.subcategoria-dropdown {
    width: 100%;
    max-width: 300px;
    padding: 0 10px;
    margin-bottom: 20px;
}

.subcategoria-dropdown select {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background-color: #f5f5f5;
    appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg fill="%2397979F" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 16px;
    cursor: pointer;
}

.subcategoria-dropdown select:focus {
    outline: none;
    border-color: var(--color-principal);
    box-shadow: 0 0 5px rgba(3, 42, 83, 0.5);
}

/* Menú de navegación (escritorio) */
.nav-pilares {
    display: flex;
    justify-content: center;
    padding: 10px 0;
    align-items: center;
}

.nav-pilares ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
}

.nav-item {
    position: relative;
    margin: 0 15px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-principal);
    font-size: var(--tamano-link);
    padding: 5px 10px;
    cursor: pointer;
}

.nav-link:hover,
.nav-link.active,
.nav-item:hover .nav-link {
    background-color: var(--color-principal);
    color: white;
    border-radius: 12px;
}

.nav-link::after {
    content: " ▾"; /* Flecha hacia abajo */
    font-size: 12px;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    border: 1px solid #e0e0e0;
    padding: 10px;
    border-radius: 8px;
    z-index: 1000;
    min-width: 200px;
    max-height: 300px; /* Altura máxima */
    overflow-y: auto;  /* Habilitar scroll vertical */
}

#grid-placeholder {
    scroll-margin-top: 50px;  /* Ajustar según sea necesario */
}

.nav-item:hover .dropdown-menu {
    display: block;
}

.dropdown-menu label {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
}

.dropdown-menu label:hover {
    background-color: #f0f0f0;
}

.dropdown-menu input[type="checkbox"] {
    margin: 0;
}

.dropdown-menu label span {
    margin-left: 8px;
}

/* Botón de resetear filtros (escritorio) */
.reset-filters {
    margin-left: 30px;
    padding: 8px 16px;
    background-color: var(--color-principal);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: var(--tamano-reset-button);
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.reset-filters:hover {
    background-color: var(--color-boton-reset-hover);
    color: #333;
}

button:focus {
    background-color: var(--color-principal);
}

/* Grilla de posts */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1100px;
    margin: 0 auto;
}

/* Contenedor del post destacado */
#featured-post-container {
    position: relative;
    width: calc(100% - 4%);
    max-width: 1055px;
    margin: 40px auto;
    border-radius: 12px;
    overflow: hidden;
    box-sizing: border-box;
}

.featured-post {
    position: relative;
    width: 100%;
    height: 250px; /* Ajustar según necesidad */
    border-radius: 12px;
    overflow: hidden;
}

.featured-post-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.featured-post::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(20, 22, 36, 0.4), rgba(20, 22, 36, 0.4));
    z-index: 2;
}

.featured-post-content {
    position: absolute;
    bottom: 15px;
    left: 40px;
    padding: 20px;
    width: calc(100% - 80px);
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 3; /* Asegura que esté encima de la imagen y el overlay */
}

.featured-post-category {
    background-color: var(--color-principal);
    color: white;
    padding: 0px 10px;
    border-radius: 16px;
    font-size: var(--tamano-featured-category);
    font-family: 'Work Sans', sans-serif;
    font-weight: 500;
    text-decoration: none;
    text-transform: capitalize;
    transition: background-color 0.3s ease;
    align-self: flex-start;
}

.featured-post-category:hover {
    background-color: var(--color-hover);
}

.featured-post-title-link {
    text-decoration: none;
    color: inherit;
}

.featured-post-title-link:hover {
    text-decoration: none;
}

.featured-post-title {
    font-family: 'Montserrat', sans-serif;
    font-size: var(--tamano-featured-title);
    font-weight: 600;
    line-height: 1.2;
    color: #FFFFFF;
    margin: 0 0 10px 0;
    text-transform: uppercase;
}

.featured-post-meta {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
    font-family: 'Work Sans', sans-serif;
    font-size: var(--tamano-featured-meta);
    color: #FFFFFF;
}

.featured-post-author,
.featured-post-date {
    display: inline-block;
    font-size: var(--tamano-featured-meta);
}

/* Tarjeta de post */
.post-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    border: 1px solid var(--color-borde);
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-fondo);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 16px;
    gap: 16px;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: box-shadow 0.3s ease;
}

.post-card:hover,
.post-card:focus {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    outline: none;
}

.post-card-top {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.post-card-image {
    width: 100%;
    height: 169px;
    overflow: hidden;
    border-radius: 6px;
}

.post-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-card-title-link {
    text-decoration: none;
    color: inherit;
}

.post-card-title-link:hover {
    text-decoration: none;
}

.post-card-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 20px;
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-texto);
    margin: 0 0 10px 0;
}

.post-card-category {
    display: inline-block;
    background-color: var(--color-principal);
    color: white;
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 14px;
    font-family: 'Work Sans', sans-serif;
    font-weight: 500;
    text-decoration: none;
    align-self: flex-start;
    text-transform: capitalize;
    transition: background-color 0.3s ease;
}

.post-card-category:hover {
    background-color: var(--color-boton-reset-hover);
    color: #333;
}

.post-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-top: auto;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.post-card-author,
.post-card-date {
    font-family: 'Work Sans', sans-serif;
    font-size: 14px;
    color: var(--color-texto-secundario);
}

/* Paginación */
.pagination {
    text-align: center;
    margin: 20px 0;
}

.pagination ul {
    list-style: none;
    padding: 0;
    justify-content: center;
    flex-wrap: wrap;
}

.pagination li {
    display: inline-block;
    margin: 0 5px;
}

.pagination a,
.pagination span {
    display: block;
    padding: 8px 12px;
    background-color: var(--color-paginacion);
    color: #333;
    text-decoration: none;
    border-radius: 12px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.pagination a:hover {
    background-color: var(--color-paginacion-hover);
}

.pagination .active a,
.pagination .active span {
    background-color: var(--color-paginacion-activa);
    color: #fff;
}

/* Responsividad para móviles */
@media (max-width: 768px) {
    .h1-articulos {
        font-size: var(--tamano-h1-movil);
        margin: 15px 0;
    }

    /* Ocultar navegación en móviles */
    .nav-pilares {
        display: none;
    }

    /* Mostrar filtros en móviles */
    .filter-container {
        display: flex;
    }

    .post-grid {
        grid-template-columns: 1fr;
        padding: 10px;
        max-width: 100%;
    }

    /* Ocultar botón de reset en móviles */
    .reset-filters {
        display: none;
    }

    /* Post destacado en móviles */
    #featured-post-container {
        width: calc(100% - 4%);
        max-width: 100%;
        margin: 20px 10px;
    }

    .featured-post {
        height: auto;
        min-height: 205px; /* Ajustar según necesidad */
    }

    .featured-post-content {
        bottom: 10px;
        left: 10px;
        right: 10px;
        padding: 5px;
        gap: 10px;
        width: auto;
    }

    .featured-post-title {
        font-size: 16px;
        line-height: 1.2;
    }

    .featured-post-category {
        font-size: 12px;
    }

    .featured-post-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0px;
    }

    .featured-post-author,
    .featured-post-date {
        font-size: 14px;
    }
}

/* Clase para accesibilidad */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}


/* Evitar CLS: overlay de carga */
#grid-placeholder.is-loading {
  position: relative;
  opacity: 0.6;            /* sensación de disabled sin ocultar nada */
  transition: opacity .2s;
}
#grid-placeholder.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  display: block;
  background: transparent;
  pointer-events: none;
  /* spinner simple */
  background-image:
    radial-gradient(circle closest-side, currentColor 90%, transparent 92%),
    conic-gradient(from 0deg, transparent 10%, currentColor 10% 20%, transparent 20% 30%, currentColor 30% 40%, transparent 40% 50%, currentColor 50% 60%, transparent 60% 70%, currentColor 70% 80%, transparent 80% 90%, currentColor 90% 100%);
  background-repeat: no-repeat;
  background-position: center, center;
  background-size: 12px 12px, 24px 24px;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }