/* ======================================================
   BLOG SINTEGRAD — ESTILOS PRINCIPALES
   ====================================================== */

/* ---------- FILTROS ---------- */
.blog-filtros {
    background: #000;
    padding: 32px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.filtros-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.filtro-btn {
    padding: 8px 20px;
    border: 1.5px solid rgba(255,255,255,0.2);
    background: transparent;
    color: #ccc;
    border-radius: 6px;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.filtro-btn:hover {
    border-color: rgba(0,162,255,0.5);
    border-top-color: #00A2FF;
    color: #00A2FF;
}

.filtro-btn.activo {
    background: #00A2FF;
    border-color: rgba(0,162,255,0.5);
    border-top-color: #00A2FF;
    color: #000;
}

/* ---------- LISTADO ---------- */
.blog-listado {
    background: #000;
    padding: 56px 0 72px;
    min-height: 50vh;
}

.articulos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* ---------- CARD ---------- */
.card-articulo {
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
    border-top: 2px solid #00A2FF;
    border-radius: 10px;
    overflow: hidden;
    transition: border-color 0.2s, transform 0.2s;
    display: flex;
    flex-direction: column;
}

.card-articulo:hover {
    border-color: rgba(0,162,255,0.5);
    border-top-color: #00A2FF;
    transform: translateY(-2px);
}

/* Imagen oculta — las cards funcionan sin imagen */
.card-articulo img {
    display: none;
}

.card-articulo-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.categoria-badge {
    display: inline-block;
    background: rgba(0,162,255,0.12);
    color: #00A2FF;
    border: 1px solid rgba(0,162,255,0.25);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 10px;
    align-self: flex-start;
}

.card-articulo h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.975rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px;
    line-height: 1.4;
}

.card-articulo p {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.875rem;
    color: #888;
    margin: 0 0 14px;
    line-height: 1.6;
    flex: 1;
}

.card-meta {
    display: flex;
    gap: 14px;
    font-size: 0.78rem;
    color: #555;
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 14px;
}

.btn-leer-mas {
    display: inline-block;
    color: #00A2FF;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    font-family: 'Montserrat', sans-serif;
    transition: color 0.2s;
    align-self: flex-start;
}

.btn-leer-mas:hover {
    color: #fff;
}

/* ---------- SIN RESULTADOS ---------- */
.sin-resultados {
    text-align: center;
    padding: 80px 20px;
}

.sin-resultados p {
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    color: #999;
    margin-bottom: 24px;
}

.btn-volver {
    display: inline-block;
    background: #00A2FF;
    color: #000;
    padding: 12px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    transition: opacity 0.2s;
}

.btn-volver:hover {
    opacity: 0.85;
}

/* ---------- NEWSLETTER ---------- */
.blog-newsletter {
    background: #0a0a0a;
    border-top: 1px solid rgba(255,255,255,0.06);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 64px 0;
}

.blog-newsletter__inner {
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
}

.blog-newsletter h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 700;
    color: #fff;
    margin: 0 0 12px;
    line-height: 1.3;
}

.blog-newsletter p {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.95rem;
    color: #777;
    margin: 0 0 28px;
    line-height: 1.6;
}

.blog-newsletter__form {
    display: flex;
    gap: 8px;
    max-width: 440px;
    margin: 0 auto;
}

.blog-newsletter__form input[type="email"] {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid rgba(255,255,255,0.12);
    background: #000;
    color: #fff;
    border-radius: 6px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.blog-newsletter__form input[type="email"]:focus {
    border-color: rgba(0,162,255,0.5);
    border-top-color: #00A2FF;
}

.blog-newsletter__form button {
    background: #00A2FF;
    color: #000;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 700;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.875rem;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity 0.2s;
}

.blog-newsletter__form button:hover {
    opacity: 0.85;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
    .articulos-grid {
        grid-template-columns: 1fr;
    }

    .filtros-wrapper {
        justify-content: flex-start;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 4px;
        -webkit-overflow-scrolling: touch;
    }

    .filtro-btn {
        flex-shrink: 0;
    }

    .blog-newsletter__form {
        flex-direction: column;
    }

    .blog-newsletter__form button {
        width: 100%;
    }
}