/* =============================================================================
   BLOG CUATRO+D — Hoja de estilos principal
   Versión: 1.0   |   Fecha: 2026-04-27   |   Autor: Somos Digital

   Hereda paleta y fuentes del tema temas/cuatrod/css/style.css.
   Define la tipografía de prosa que el sitio principal NO tiene.
   Estructura por bloques numerados (ver índice abajo).

   Índice
   ------
   1.  Reset y base
   2.  CSS variables (paleta y tipografía)
   3.  @font-face (HelveticaNeue + AlternateGothic)
   4.  Tipografía base de prosa (.blog-article-body)
   5.  Header (heredado del sitio)
   6.  Footer (heredado del sitio)
   7.  Hero del blog
   8.  Layout listado (main + sidebar)
   9.  Cards de listado
   10. Artículo individual
   11. Breadcrumb
   12. Paginador
   13. Categorías y tags (badges)
   14. Compartir / autor / relacionados
   15. WhatsApp flotante (heredado)
   16. 404
   17. Responsive
   18. Utilidades
   ========================================================================== */


/* === 1. RESET Y BASE ===================================================== */

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

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; }

a { color: var(--color-primary-dark); text-decoration: none; }
a:hover { color: var(--color-primary); }

/* La clase utilitaria del sitio para applicar la fuente display */
.AlternateGothic { font-family: var(--font-display); }


/* === 2. CSS VARIABLES (paleta y tipografía) ============================== */

:root {
    /* Paleta — confirmada en docs/01b_exploracion_tema_y_modulos.md */
    --color-primary:        #27a8a4;   /* turquesa principal */
    --color-primary-dark:   #01A7A3;   /* variante oscura, links activos */
    --color-primary-mid:    #1AAD9F;   /* variante hover en menú del sitio */
    --color-bg:             #F5F5F7;   /* fondo de secciones claras y body */
    --color-bg-dark:        #212830;   /* botón WhatsApp y fondos invertidos */
    --color-bg-darker:      #21272D;   /* alternativo de las landings */
    --color-text:           #212830;   /* texto principal */
    --color-text-secondary: #7F8082;   /* meta, fechas, autor */
    --color-text-tertiary:  #C1C2C4;   /* placeholder */
    --color-border:         #C1C2C4;
    --color-border-light:   #C5C7C7;
    --color-divider:        #DDDDDD;

    /* Tipografía */
    --font-display: 'AlternateGothic', 'Arial Narrow', Impact, sans-serif;
    --font-body:    'HelveticaNeue', Helvetica, Arial, sans-serif;
    --font-mono:    SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;

    /* Layout */
    --max-width-article:   760px;
    --max-width-content:  1200px;

    /* Espaciado / radius */
    --radius-sm: 2px;
    --radius-md: 4px;

    /* Header del sitio (logo + menú + lenguaje en una sola línea) */
    --header-height:         75px;
    --header-height-mobile:  73px;
}


/* === 3. @FONT-FACE ======================================================= */

@font-face {
    font-family: 'HelveticaNeue';
    src: url('/blog/assets/fonts/helveticaneue-roman-webfont.woff2') format('woff2'),
         url('/blog/assets/fonts/helveticaneue-roman-webfont.woff')  format('woff'),
         url('/blog/assets/fonts/helveticaneue-roman-webfont.ttf')   format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'AlternateGothic';
    src: url('/blog/assets/fonts/Alternate Gothic No2 BT-webfont.woff2') format('woff2'),
         url('/blog/assets/fonts/Alternate Gothic No2 BT-webfont.woff')  format('woff'),
         url('/blog/assets/fonts/Alternate Gothic No2 BT-webfont.ttf')   format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}


/* === 4. TIPOGRAFÍA BASE DE PROSA ========================================== */
/* Basada en #novedades-abierta-text del sitio: 17px / line-height 200%.
   El sitio NO define h1..h6, p, a, ul globalmente; lo definimos acá para
   que los artículos tengan una jerarquía consistente. */

.blog-article-body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.9;
    color: var(--color-text);
    max-width: var(--max-width-article);
    margin: 0 auto;
}

.blog-article-body h2 {
    font-family: var(--font-display);
    font-size: 32px;
    line-height: 1.2;
    margin: 2.5em 0 0.6em;
    color: var(--color-text);
}

.blog-article-body h3 {
    font-family: var(--font-display);
    font-size: 24px;
    line-height: 1.25;
    margin: 2em 0 0.5em;
    color: var(--color-text);
}

.blog-article-body h4 {
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: bold;
    line-height: 1.4;
    margin: 1.6em 0 0.4em;
    color: var(--color-text);
}

.blog-article-body p {
    margin: 0 0 1.5em;
}

.blog-article-body a {
    color: var(--color-primary-dark);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}
.blog-article-body a:hover { color: var(--color-primary); }

.blog-article-body strong { font-weight: bold; }
.blog-article-body em     { font-style: italic; }

.blog-article-body ul,
.blog-article-body ol {
    margin: 0 0 1.5em 1.8em;
    padding: 0;
}
.blog-article-body li { margin-bottom: 0.6em; }

.blog-article-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding: 12px 0 12px 24px;
    margin: 2em 0;
    font-style: italic;
    color: var(--color-text-secondary);
}
.blog-article-body blockquote p:last-child { margin-bottom: 0; }

.blog-article-body img,
.blog-article-body iframe,
.blog-article-body video {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 1.6em auto;
}
.blog-article-body figure { margin: 1.6em 0; }
.blog-article-body figcaption {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-align: center;
    margin-top: 0.4em;
    font-style: italic;
}

.blog-article-body code {
    background: rgba(0, 0, 0, 0.05);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.92em;
}
.blog-article-body pre {
    background: var(--color-bg-dark);
    color: #fff;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 1.6em 0;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
}
.blog-article-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

.blog-article-body hr {
    border: 0;
    border-top: 1px solid var(--color-divider);
    margin: 2.5em auto;
    max-width: 200px;
}

.blog-article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 16px;
}
.blog-article-body th,
.blog-article-body td {
    border: 1px solid var(--color-border-light);
    padding: 10px 14px;
    text-align: left;
}
.blog-article-body th {
    background: var(--color-bg);
    font-family: var(--font-display);
    font-weight: normal;
    font-size: 18px;
}


/* === 5. HEADER (heredado del sitio principal) ============================ */
/* Replica el header de las páginas internas:
   - fondo blanco fijo (no cambia al hacer scroll), igual que .fondo de style.css
   - logo chico (157px de ancho — usa el truco width:0 + min-width:157 del real,
     que evita que la imagen renderice a su tamaño natural de 320px)
   - logo + menú + selector de idioma en una sola línea (flexbox)
   - ES clickeable, POR/EN solo texto. */

.header {
    padding: 11px 0;
    width: 100%;
    top: 0;
    position: fixed;
    background-color: #fff;
    z-index: 100;
}
.header.fondo {
    background-color: #fff;
    border-bottom: 1px solid var(--color-divider);
}

.header .navbar {
    margin: 0;
    background-color: transparent;
    min-height: auto;
    border: 0;
}
.header .navbar-default {
    padding: 0;
    border-radius: 0;
    border: 0;
    background-color: transparent;
}

.header-cont {
    position: relative;
    overflow: hidden;     /* BFC: contiene los floats internos en mobile */
}

/* Logo: 157px de ancho (mismo tamaño que en /proyectos, /novedades, etc.) */
#web-logo {
    padding: 6.5px 0;
    float: left;
    text-align: center;
}
#web-logo img {
    width: 0;             /* truco copiado del style.css real: width:0 + min-width:157
                             fuerza al image a renderizarse a 157px de ancho exactos,
                             en lugar de su tamaño natural (320×76). */
    min-width: 157px;
    max-width: 100%;
    height: auto;
    display: block;
}

/* Selector de idioma — gris claro, ES en turquesa, POR/EN solo texto */
#lenguaje {
    padding: 12.5px 0;
    margin: 0;
    z-index: 4;
    float: right;
    font-size: 18px;
    background-color: transparent;
}
#lenguaje a,
#lenguaje .idioma,
#lenguaje span {
    color: var(--color-text-tertiary);
    margin: 0 4px;
    text-decoration: none;
}
#lenguaje .idioma.activo,
#lenguaje a:hover { color: var(--color-primary-mid); }
#lenguaje span.idioma { cursor: default; }

/* Menú principal */
#options {
    margin: 0;
    padding: 0;
    list-style: none;
}
#options > li {
    display: inline-block;
    vertical-align: middle;
}
#options > li > a {
    display: block;
    padding: 14px 14px;
    color: var(--color-text-tertiary);
    font-size: 18px;
    letter-spacing: 0.5px;
    text-decoration: none;
    transition: color .15s ease-in;
}
#options > li > a:hover { color: var(--color-primary-mid); }

/* Item activo del menú (BLOG): override de Bootstrap
   (`.navbar-default .navbar-nav > .active > a` pinta un cuadrado gris).
   En el blog el activo solo cambia color y peso; sin fondo ni borde. */
#options > li.active > a,
#options > li.active > a:hover,
#options > li.active > a:focus {
    color: var(--color-primary);
    background-color: transparent;
    font-weight: bold;
    border: 0;
    box-shadow: none;
}


/* Desktop (≥768px): logo + menú + lenguaje en una sola línea horizontal.
   Usamos flexbox sobre .navbar-default con display:contents en .header-cont
   para que sus hijos (web-logo, lenguaje, button) participen como items del
   mismo flex que el <nav>, y los reordenamos con `order`. */
@media (min-width: 768px) {
    .header .navbar.navbar-default {
        display: flex;
        align-items: center;
        flex-wrap: nowrap;
    }
    .header-cont {
        display: contents;
    }
    /* Padding explícito y simétrico: 30px a la izquierda en #web-logo,
       30px a la derecha en #lenguaje. Override del padding 15px de
       Bootstrap col-md-* para que el valor sea fijo y consistente. */
    #web-logo {
        order: 1;
        flex: 0 0 auto;
        width: auto !important;       /* override Bootstrap col-md-3 (25%) */
        padding: 6.5px 0 6.5px 30px;
        float: none;
        margin: 0;
        text-align: left;
    }
    nav#navbar {
        order: 2;
        flex: 1 1 auto;
        width: auto;
        text-align: center;
        clear: none;
        float: none;
    }
    #options {
        display: inline-block;
        float: none !important;
    }
    #lenguaje {
        order: 3;
        flex: 0 0 auto;
        width: auto !important;       /* override Bootstrap col-md-2 (16.67%) */
        padding: 12.5px 30px 12.5px 0;
        float: none;
        margin: 0;
        text-align: right;
    }
    /* El último item de #lenguaje (EN) no debe llevar margen-right
       porque rompería la simetría con el padding-left del logo. */
    #lenguaje > *:last-child { margin-right: 0; }
}

/* Hamburger button (solo mobile) */
.navbar-toggle {
    position: absolute;
    top: 14px;
    right: 15px;
    padding: 9px 10px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: none;
}
.navbar-toggle .icon-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
    margin: 4px 0;
}

/* lenguaje-2 (oculto en desktop, se muestra dentro del menú mobile) */
#lenguaje-2 { display: none; }


/* Espacio para que el contenido no quede tapado por el header fijo */
body { padding-top: var(--header-height); }


/* === 6. FOOTER (heredado) ================================================ */

footer {
    clear: both;
    width: 100%;
}

#footer-start {
    padding: 25px 5.4%;
    background-color: var(--color-primary);
    color: #fff;
    clear: both;
    overflow: hidden;
}

#address {
    font-size: 17px;
    color: #fff;
}
#address p { margin: 0; }
#address a { color: #fff; text-decoration: none; }
#address a:hover { color: var(--color-bg-darker); }

#social-icons { margin-top: 12px; text-align: right; }
#social-icons ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
#social-icons ul li {
    display: inline-block;
    margin-left: 18px;
}
#social-icons ul li a {
    display: inline-block;
    width: 32px;
    height: 32px;
    background-size: 100%;
    background-repeat: no-repeat;
}
#facebook  { background-image: url('/temas/cuatrod/img/redes/facebook.png');  }
#facebook:hover  { background-image: url('/temas/cuatrod/img/redes/hover-facebook.png');  }
#youtube   { background-image: url('/temas/cuatrod/img/redes/youtube.png');   }
#youtube:hover   { background-image: url('/temas/cuatrod/img/redes/hover-youtube.png');   }
#linkedin  { background-image: url('/temas/cuatrod/img/redes/linkedin.png');  }
#linkedin:hover  { background-image: url('/temas/cuatrod/img/redes/hover-linkedin.png');  }
#instagram { background-image: url('/temas/cuatrod/img/redes/instagram.png'); }
#instagram:hover { background-image: url('/temas/cuatrod/img/redes/hover-instagram.png'); }

#footer-end {
    padding: 23px 5.4%;
    background-color: var(--color-bg-dark);
    color: var(--color-text-secondary);
    font-size: 17px;
    overflow: hidden;
}
#footer-logo,
#footer-logo2 { float: left; margin-right: 24px; }
#footer-logo img,
#footer-logo2 img { max-width: 250px; height: auto; }
#footer-text { float: right; }
#footer-text p { margin: 0; font-size: 16px; line-height: 1.5; }
#footer-text a { color: var(--color-text-secondary); }
#footer-text a:hover { color: #fff; }


/* === 7. HERO DEL BLOG ==================================================== */

.blog-hero {
    background: var(--color-bg);
    padding: 60px 0 30px;
    text-align: center;
    border-bottom: 1px solid var(--color-divider);
}
.blog-hero-titulo {
    font-size: 56px;
    line-height: 1;
    margin: 0;
    letter-spacing: 1px;
    color: var(--color-text);
}
.blog-hero-subtitulo {
    font-size: 20px;
    color: var(--color-text-secondary);
    margin: 14px 0 0;
}


/* === 8. LAYOUT LISTADO =================================================== */

.blog-contenedora { padding: 0; }

.blog-layout {
    margin-top: 40px;
    margin-bottom: 60px;
    overflow: hidden;
}

.blog-main { /* col-md-9 ya manejado por Bootstrap */ }
.blog-sidebar {
    /* col-md-3 manejado por Bootstrap */
    padding-left: 30px;
}

.blog-sidebar-bloque {
    background: #fff;
    padding: 20px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}
.blog-sidebar-titulo {
    font-size: 22px;
    margin: 0 0 14px;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 8px;
}
.blog-sidebar-lista {
    list-style: none;
    padding: 0;
    margin: 0;
}
.blog-sidebar-lista li {
    border-bottom: 1px solid var(--color-divider);
    padding: 8px 0;
    font-size: 15px;
}
.blog-sidebar-lista li:last-child { border-bottom: 0; }
.blog-sidebar-lista a { color: var(--color-text); }
.blog-sidebar-lista a:hover { color: var(--color-primary); }

.blog-sidebar-texto { font-size: 15px; color: var(--color-text-secondary); margin: 0 0 8px; }
.blog-sidebar-rss {
    display: inline-block;
    padding: 6px 14px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-md);
    font-size: 14px;
}
.blog-sidebar-rss:hover { background: var(--color-primary-dark); color: #fff; }


/* === 9. CARDS DE LISTADO ================================================= */

.blog-grid {
    margin-left: -12px;
    margin-right: -12px;
    display: flex;
    flex-wrap: wrap;
}

.blog-card {
    padding: 12px;
    margin-bottom: 24px;
    display: flex;
}

.blog-card-link {
    display: flex;
    flex-direction: column;
    width: 100%;
    background: #fff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow .2s ease, transform .2s ease;
    color: inherit;
}
.blog-card-link:hover {
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
    color: inherit;
}

.blog-card-imagen {
    aspect-ratio: 16 / 9;
    background: var(--color-bg);
    overflow: hidden;
}
.blog-card-imagen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.blog-card-cuerpo {
    padding: 18px 20px 22px;
}

.blog-card-titulo {
    font-size: 24px;
    line-height: 1.2;
    margin: 8px 0 10px;
    color: var(--color-text);
}

.blog-card-meta {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin: 0 0 12px;
}
.blog-card-meta time { font-weight: bold; }

.blog-card-extracto {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text);
    margin: 0 0 12px;
}

.blog-card-cta {
    display: inline-block;
    color: var(--color-primary-dark);
    font-family: var(--font-display);
    font-size: 16px;
    letter-spacing: 0.5px;
}

.blog-empty-state {
    text-align: center;
    padding: 60px 20px;
}
.blog-empty-state p:first-child {
    font-size: 32px;
    color: var(--color-text-tertiary);
    margin: 0 0 8px;
}


/* === 10. ARTÍCULO INDIVIDUAL ============================================= */

.blog-article {
    background: #fff;
    margin-bottom: 60px;
}

.blog-article-header {
    text-align: center;
    padding: 40px 20px 20px;
    max-width: var(--max-width-article);
    margin: 0 auto;
}

.blog-article-titulo {
    font-size: 36px;
    line-height: 1.1;
    color: var(--color-text);
    margin: 0 0 12px;
}

.blog-article-subtitulo {
    font-size: 26px;
    line-height: 1.3;
    color: var(--color-primary-dark);
    margin: 0 0 18px;
    font-family: var(--font-display);
}

.blog-article-meta {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin: 0 0 20px;
}
.blog-article-meta > * { display: inline-block; }
.blog-article-meta .sep { margin: 0 6px; opacity: 0.5; }

.blog-article-imagen-destacada {
    margin: 0 auto 40px;
    max-width: 1200px;
}
.blog-article-imagen-destacada img {
    width: 100%;
    height: auto;
    display: block;
}
.blog-article-imagen-destacada figcaption {
    text-align: center;
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 8px;
    font-style: italic;
}

/* Imágenes intercaladas dentro del cuerpo del artículo */
.blog-article-img {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    margin: 32px auto 8px;
    border-radius: 2px;
}
.blog-article-img-caption {
    text-align: center;
    font-size: 14px;
    color: var(--color-text-secondary);
    margin: 0 0 32px;
    font-style: italic;
}


/* === 11. BREADCRUMB ====================================================== */

.blog-breadcrumb {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin: 20px 0;
    padding: 8px 0;
}
.blog-breadcrumb a { color: var(--color-primary-dark); }
.blog-breadcrumb a:hover { color: var(--color-primary); }
.blog-breadcrumb span { margin: 0 6px; opacity: 0.6; }
.blog-breadcrumb [aria-current="page"] {
    color: var(--color-text);
    font-weight: bold;
}


/* === 12. PAGINADOR ======================================================= */
/* Heredado de .paginador del sitio: AlternateGothic 26px, gris #C1C2C4,
   activo #01A7A3. */

.paginador {
    clear: both;
    text-align: center;
    margin: 40px auto;
}
.paginador ul {
    margin: 0;
    padding: 0;
    list-style: none;
}
.paginador li {
    display: inline-block;
    margin: 0;
    font-family: var(--font-display);
    font-size: 26px;
    color: var(--color-text-tertiary);
}
.paginador li a {
    color: var(--color-text-tertiary);
    margin: 6px;
    text-decoration: none;
}
.paginador li a:hover,
.paginador li.active a { color: var(--color-primary-dark); cursor: pointer; }


/* === 13. CATEGORÍAS Y TAGS (badges) ====================================== */

.blog-category-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-primary);
    color: #fff;
    font-size: 13px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-sm);
    text-decoration: none;
}
.blog-category-badge:hover { background: var(--color-primary-dark); color: #fff; }

.blog-tag {
    display: inline-block;
    padding: 3px 10px;
    margin: 0 6px 6px 0;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 13px;
    border-radius: var(--radius-sm);
    text-decoration: none;
}
.blog-tag:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}


/* === 14. COMPARTIR / AUTOR / RELACIONADOS ================================ */

.blog-article-tags {
    max-width: var(--max-width-article);
    margin: 30px auto;
    padding: 0 20px;
}
.blog-article-tags-titulo {
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--color-text-secondary);
    margin: 0 0 8px;
    letter-spacing: 0.5px;
}

.blog-article-share {
    max-width: var(--max-width-article);
    margin: 30px auto;
    padding: 24px 20px;
    border-top: 1px solid var(--color-divider);
    border-bottom: 1px solid var(--color-divider);
    text-align: center;
}
.blog-article-share-titulo {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--color-text);
    margin: 0 0 12px;
}
.blog-article-share-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.blog-article-share-list li {
    display: inline-block;
    margin: 0 6px;
}
.blog-article-share-list a {
    display: inline-block;
    padding: 8px 16px;
    background: var(--color-bg);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: background .2s, color .2s;
}
.blog-article-share-list a:hover {
    background: var(--color-primary);
    color: #fff;
}

.blog-article-author-bio {
    max-width: var(--max-width-article);
    margin: 30px auto;
    padding: 24px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.blog-article-author-bio-foto {
    float: left;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    margin-right: 20px;
    background: var(--color-border-light);
    overflow: hidden;
}
.blog-article-author-bio-foto img { width: 100%; height: 100%; object-fit: cover; }
.blog-article-author-bio-nombre {
    font-family: var(--font-display);
    font-size: 22px;
    margin: 0 0 4px;
    color: var(--color-text);
}
.blog-article-author-bio-texto {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.5;
}

.blog-article-related {
    max-width: var(--max-width-content);
    margin: 60px auto 30px;
    padding: 0 20px;
}
.blog-article-related-titulo {
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--color-text);
    text-align: center;
    margin: 0 0 30px;
    letter-spacing: 0.5px;
}


/* === 15. WHATSAPP FLOTANTE (heredado) ==================================== */

.whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-bg-dark);
    box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.4);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}
.whatsapp-btn svg {
    width: 30px;
    height: 30px;
    fill: #fff;
    margin: auto;
}


/* === 16. 404 ============================================================= */

.blog-404 .blog-404-content {
    text-align: center;
    padding: 80px 20px 60px;
    min-height: 60vh;
}
.blog-404-codigo {
    font-size: 120px;
    line-height: 1;
    color: var(--color-primary);
    margin: 0;
    letter-spacing: 4px;
}
.blog-404-titulo {
    font-size: 36px;
    color: var(--color-text);
    margin: 8px 0 20px;
}
.blog-404-texto {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin: 0 0 30px;
}
.blog-404-acciones {
    list-style: none;
    padding: 0;
    margin: 0;
}
.blog-404-acciones li {
    display: inline-block;
    margin: 0 12px 12px;
    font-size: 18px;
}
.blog-404-acciones a {
    color: var(--color-primary-dark);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
}
.blog-404-acciones a:hover {
    border-bottom-color: var(--color-primary);
}


/* === 17. RESPONSIVE ====================================================== */
/* Tres breakpoints: 991px (tablet), 767px (mobile), 480px (mobile chico). */

/* Tablet (≤ 991px) */
@media (max-width: 991px) {
    .blog-sidebar { padding-left: 15px; padding-top: 30px; }
    .blog-hero { padding: 40px 0 24px; }
    .blog-hero-titulo { font-size: 48px; }
    .blog-article-titulo { font-size: 32px; }
    .blog-article-subtitulo { font-size: 22px; }
}

/* Mobile (≤ 767px) */
@media (max-width: 767px) {
    /* Header pasa a una sola fila con logo + hamburger; el menú se colapsa */
    body { padding-top: var(--header-height-mobile); }
    .header { padding: 0; }
    .header-cont { height: var(--header-height-mobile); padding: 9px 15px 0; }
    .navbar-toggle { display: block; }
    #web-logo { margin-right: 0; padding: 6px 0; }
    #web-logo img { min-width: 157px; }
    #navbar.collapse:not(.in) { display: none; }
    #navbar {
        clear: both;
        float: none;
        background: #fff;
        border-top: 1px solid var(--color-divider);
        margin: 0;
    }
    #navbar.in { display: block !important; }
    #options { display: block; text-align: left; }
    #options > li {
        display: block;
        border-bottom: 1px solid var(--color-divider);
    }
    #options > li > a {
        padding: 14px 20px;
        text-align: left;
        color: var(--color-text);
    }
    #options > li > a:hover,
    #options > li.active > a { color: var(--color-primary-mid); }
    #lenguaje { display: none; }
    #lenguaje-2 {
        display: block;
        list-style: none;
        padding: 14px 20px;
        margin: 0;
        background: var(--color-bg);
    }
    #lenguaje-2 li {
        display: inline-block;
        margin-right: 12px;
    }
    #lenguaje-2 a,
    #lenguaje-2 span { color: var(--color-text-secondary); font-size: 14px; }
    #lenguaje-2 a.activo { color: var(--color-primary); font-weight: bold; }

    /* Hero */
    .blog-hero { padding: 30px 0 20px; }
    .blog-hero-titulo { font-size: 40px; }
    .blog-hero-subtitulo { font-size: 17px; }

    /* Layout */
    .blog-layout { margin-top: 24px; margin-bottom: 40px; }
    .blog-card-titulo { font-size: 22px; }
    .blog-card-cuerpo { padding: 16px; }

    /* Artículo */
    .blog-article-titulo { font-size: 28px; }
    .blog-article-subtitulo { font-size: 20px; }
    .blog-article-body { font-size: 16px; line-height: 1.7; padding: 0 20px; }
    .blog-article-body h2 { font-size: 26px; margin-top: 1.8em; }
    .blog-article-body h3 { font-size: 21px; }

    /* Footer */
    #footer-start { padding: 25px 20px; text-align: center; }
    #social-icons { text-align: center; margin-top: 20px; }
    #social-icons ul li { margin: 0 8px; }
    #footer-end { text-align: center; padding: 20px; }
    #footer-logo, #footer-logo2 { float: none; margin: 0 auto 12px; display: block; }
    #footer-logo img, #footer-logo2 img { display: block; margin: 0 auto; }
    #footer-text { float: none; text-align: center; margin-top: 16px; }
}

/* Mobile chico (≤ 480px) */
@media (max-width: 480px) {
    .blog-hero-titulo { font-size: 36px; }
    .blog-404-codigo  { font-size: 90px;  }
    .blog-404-titulo  { font-size: 28px;  }
    .blog-article-imagen-destacada { padding: 0; }
    .blog-article-share-list li { display: block; margin: 6px 0; }
}


/* === 18. UTILIDADES ====================================================== */

.blog-sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.blog-text-center { text-align: center; }
.blog-mt-0  { margin-top: 0; }
.blog-mb-0  { margin-bottom: 0; }
.blog-mt-2  { margin-top: 1rem; }
.blog-mb-2  { margin-bottom: 1rem; }