body{
    background:#f4f7fb;
    font-family: 'Segoe UI', sans-serif;
    color:#1f2937;
}

/* CONTENEDOR */

.item-view{
    max-width:1400px;
    margin:auto;
    padding:40px 20px;
}

/* HEADER */

.item-header{
    background:#fff;
    border-radius:20px;
    padding:40px;
    display:flex;
    gap:40px;
    box-shadow:0 4px 20px rgba(0,0,0,0.06);
    margin-bottom:40px;
}

/* PORTADA */

.item-cover img{
    width:280px;
    border-radius:14px;
    box-shadow:0 8px 25px rgba(0,0,0,0.15);
}

/* META */

.item-meta{
    flex:1;
}

.item-badge{
    display:inline-block;
    background:#e0f2fe;
    color:#0369a1;
    padding:8px 16px;
    border-radius:30px;
    font-size:14px;
    font-weight:600;
    margin-bottom:20px;
}

.item-meta h1{
    font-size:30px;
    margin:0 0 15px;
    line-height:1.1;
}

.item-description{
    font-size:22px;
    color:#6b7280;
    margin-bottom:25px;
}

.item-published{
    font-size:18px;
    margin-bottom:35px;
    color:#374151;
}

/* BOTONES */

.item-actions{
    display:flex;
    gap:15px;
    flex-wrap:wrap;
}

.btn-primary,
.btn-secondary{
    padding:14px 26px;
    border-radius:12px;
    text-decoration:none;
    font-weight:600;
    transition:0.3s;
}

.btn-primary{
    background:#0f172a;
    color:#fff;
}

.btn-primary:hover{
    background:#1e293b;
}

.btn-secondary{
    background:#fff;
    border:1px solid #d1d5db;
    color:#111827;
}

.btn-secondary:hover{
    background:#f3f4f6;
}

/* CONTENIDO */

.item-content{
    display:grid;
    grid-template-columns:2fr 350px;
    gap:30px;
}

/* CAJAS */

.content-box,
.sidebar-box{
    background:#fff;
    border-radius:18px;
    padding:30px;
    box-shadow:0 4px 20px rgba(0,0,0,0.05);
}

.content-box h2,
.sidebar-box h3{
    margin-top:0;
    margin-bottom:25px;
    font-size:26px;
}

/* ARTÍCULO */

.article-card{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px 0;
    border-top:1px solid #e5e7eb;
}

.article-title{
    text-decoration:none;
    color:#0f172a;
    font-size:24px;
    font-weight:700;
}

.article-title:hover{
    color:#2563eb;
}

.article-author{
    margin-top:10px;
    color:#6b7280;
}

.article-pages{
    background:#f3f4f6;
    padding:8px 14px;
    border-radius:10px;
    font-size:14px;
}

/* SIDEBAR */

.sidebar-box{
    display:flex;
    flex-direction:column;
}

.sidebar-box a{
    text-decoration:none;
    color:#2563eb;
    margin-bottom:15px;
    font-size:16px;
}

.sidebar-box a:hover{
    color:#1d4ed8;
}

/* RESPONSIVE */

@media(max-width:992px){

    .item-header{
        flex-direction:column;
    }

    .item-cover img{
        width:100%;
        max-width:320px;
    }

    .item-content{
        grid-template-columns:1fr;
    }

    .item-meta h1{
        font-size:38px;
    }

}