/* =================================================================
   BLOG INDEX - PresuCosto
   Sistema de diseño editorial para el listado del blog
   ================================================================= */

/* ===== CONTENEDOR PRINCIPAL ===== */
.blog-index-wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

/* ===== CABECERA EDITORIAL ===== */
.blog-index-header {
    padding: 52px 0 40px;
    border-bottom: 1px solid var(--blog-border);
    margin-bottom: 36px;
}

.blog-index-header__eyebrow {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--blog-primary);
    background: #eff6ff;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.blog-index-header h1 {
    font-size: 38px;
    font-weight: 800;
    color: var(--blog-text);
    margin: 0 0 10px;
    line-height: 1.15;
}

.blog-index-header__sub {
    font-size: 16px;
    color: var(--blog-text-muted);
    margin: 0;
}

/* ===== BARRA DE FILTROS ===== */
.blog-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 36px;
    align-items: center;
}

.blog-filter-pill {
    padding: 6px 16px;
    border-radius: 20px;
    border: 1.5px solid var(--blog-border);
    background: white;
    color: var(--blog-text-muted);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--blog-transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    user-select: none;
}

.blog-filter-pill:hover {
    border-color: var(--blog-primary);
    color: var(--blog-primary);
    background: #eff6ff;
    text-decoration: none;
}

.blog-filter-pill.active {
    background: var(--blog-primary);
    border-color: var(--blog-primary);
    color: white;
}

/* ===== ARTÍCULO DESTACADO (FEATURED) ===== */
.blog-featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-radius: var(--blog-radius);
    overflow: hidden;
    box-shadow: var(--blog-shadow);
    margin-bottom: 40px;
    min-height: 280px;
    text-decoration: none;
    transition: box-shadow 0.3s;
}

.blog-featured:hover {
    box-shadow: var(--blog-shadow-hover);
    text-decoration: none;
}

.blog-featured__visual {
    background: linear-gradient(135deg, #1e3a5f 0%, #2d6a9e 60%, #3498db 100%);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    position: relative;
    overflow: hidden;
}

.blog-featured__visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(52, 152, 219, 0.3) 0%, transparent 60%),
        radial-gradient(circle at 80% 20%, rgba(46, 204, 113, 0.15) 0%, transparent 50%);
}

.blog-featured__category {
    position: relative;
    z-index: 1;
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.75);
    margin-bottom: 12px;
}

.blog-featured__title {
    position: relative;
    z-index: 1;
    font-size: 26px;
    font-weight: 800;
    color: white;
    line-height: 1.25;
    margin: 0;
}

.blog-featured__body {
    background: white;
    padding: 36px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 14px;
}

.blog-featured__meta {
    display: flex;
    gap: 14px;
    font-size: 12px;
    color: var(--blog-text-muted);
    align-items: center;
}

.blog-featured__meta .bcard__badge {
    margin-left: auto;
}

.blog-featured__excerpt {
    font-size: 15px;
    color: var(--blog-text-light);
    line-height: 1.65;
    margin: 0;
}

.blog-featured__cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--blog-primary);
    text-decoration: none;
    transition: gap 0.2s;
    margin-top: 4px;
}

.blog-featured__cta:hover {
    gap: 10px;
    text-decoration: none;
    color: var(--blog-primary-dark);
}

/* ===== GRID DE ARTÍCULOS ===== */
.blog-index-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

/* ===== TARJETA ARTÍCULO ===== */
.bcard {
    background: white;
    border-radius: var(--blog-radius);
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,0.07);
    border-top: 4px solid var(--bcard-accent, var(--blog-border));
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.bcard:hover {
    transform: translateY(-4px);
    box-shadow: var(--blog-shadow-hover);
    text-decoration: none;
}

.bcard__body {
    padding: 20px 22px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 10px;
}

.bcard__top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.bcard__cat {
    display: inline-block;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bcard-accent, var(--blog-primary));
    background: var(--bcard-accent-bg, #eff6ff);
    padding: 3px 10px;
    border-radius: 12px;
    white-space: nowrap;
}

.bcard__badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 3px 9px;
    border-radius: 10px;
    white-space: nowrap;
    flex-shrink: 0;
}

.bcard__badge--nuevo {
    background: #eff6ff;
    color: var(--blog-primary);
}

.bcard__badge--top {
    background: #fef2f2;
    color: var(--blog-danger);
}

.bcard__badge--popular {
    background: #fff7ed;
    color: var(--blog-orange);
}

.bcard__title {
    font-size: 16px;
    font-weight: 700;
    color: var(--blog-text);
    line-height: 1.35;
    margin: 0;
}

.bcard__excerpt {
    font-size: 13.5px;
    color: var(--blog-text-light);
    line-height: 1.6;
    margin: 0;
    flex: 1;
}

.bcard__meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--blog-text-muted);
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--blog-border);
    align-items: center;
}

.bcard__read {
    margin-left: auto;
    font-size: 12px;
    font-weight: 700;
    color: var(--bcard-accent, var(--blog-primary));
    text-decoration: none;
}

/* ===== VARIANTES DE COLOR POR CATEGORÍA ===== */

/* Tutoriales — rojo */
.bcard--tutoriales {
    --bcard-accent: var(--blog-danger);
    --bcard-accent-bg: #fef2f2;
}

/* APU / Excel — azul primario */
.bcard--apu {
    --bcard-accent: var(--blog-primary);
    --bcard-accent-bg: #eff6ff;
}

/* Precios / MO — verde */
.bcard--precios {
    --bcard-accent: var(--blog-success);
    --bcard-accent-bg: #f0fdf4;
}

/* Software — verde oscuro */
.bcard--software {
    --bcard-accent: #1a5f3c;
    --bcard-accent-bg: #f0fdf4;
}

/* Contratos Públicos — navy */
.bcard--contratos {
    --bcard-accent: #1a3a6b;
    --bcard-accent-bg: #eef2fb;
}

/* Materiales — naranja/café */
.bcard--materiales {
    --bcard-accent: var(--blog-orange);
    --bcard-accent-bg: #fff7ed;
}

/* Eléctrico — violeta */
.bcard--electrico {
    --bcard-accent: var(--blog-purple);
    --bcard-accent-bg: #faf5ff;
}

/* Remodelación — teal */
.bcard--remodelacion {
    --bcard-accent: #0d9488;
    --bcard-accent-bg: #f0fdfa;
}

/* Conceptos — neutro azul-gris */
.bcard--conceptos {
    --bcard-accent: #475569;
    --bcard-accent-bg: #f1f5f9;
}

/* ===== ESTADO OCULTO PARA FILTRADO JS ===== */
.bcard[hidden] {
    display: none;
}

/* ===== CTA FINAL ===== */
.blog-index-cta {
    margin-top: 50px;
    background: linear-gradient(135deg, #1e3a5f 0%, #2d6a9e 100%);
    border-radius: var(--blog-radius);
    padding: 44px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.blog-index-cta__text h2 {
    color: white;
    font-size: 22px;
    font-weight: 800;
    margin: 0 0 6px;
}

.blog-index-cta__text p {
    color: rgba(255,255,255,0.75);
    font-size: 14px;
    margin: 0;
}

.blog-index-cta__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.blog-index-cta__btn {
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--blog-transition);
    white-space: nowrap;
}

.blog-index-cta__btn--primary {
    background: white;
    color: #1e3a5f;
}

.blog-index-cta__btn--primary:hover {
    background: #eff6ff;
    color: #1e3a5f;
    text-decoration: none;
}

.blog-index-cta__btn--ghost {
    background: rgba(255,255,255,0.12);
    color: white;
    border: 1.5px solid rgba(255,255,255,0.3);
}

.blog-index-cta__btn--ghost:hover {
    background: rgba(255,255,255,0.2);
    color: white;
    text-decoration: none;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
    .blog-index-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .blog-featured {
        grid-template-columns: 1fr;
        min-height: auto;
    }
    .blog-featured__visual {
        padding: 32px 28px;
        min-height: 180px;
    }
    .blog-featured__body {
        padding: 28px;
    }
}

@media (max-width: 640px) {
    .blog-index-header h1 {
        font-size: 28px;
    }
    .blog-index-grid {
        grid-template-columns: 1fr;
    }
    .blog-index-cta {
        padding: 28px 24px;
        flex-direction: column;
        align-items: flex-start;
    }
    .blog-filter-bar {
        gap: 6px;
    }
    .blog-filter-pill {
        font-size: 12px;
        padding: 5px 12px;
    }
}