/* ==========================================================================
   BLOG — De Cero al Infinito
   Archivo: style_blog.css  |  Versión: 1.0
   Estilos para el listado de artículos (blog.html) y artículos individuales
   (blog/article.html). Extraídos de style.css para mantenimiento modular.
   ========================================================================== */

/* ══════════════════════════════════════════════════════════════
   1. LISTADO DE ARTÍCULOS (blog.html)
   ══════════════════════════════════════════════════════════════ */

/* --- Encabezado del blog --- */
.blog-page-header {
    text-align: center;
    margin: 40px 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 30px;
}

.blog-page-header h1 {
    font-size: 2.8rem;
    margin-bottom: 10px;
    color: #333;
}

.blog-page-header p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
}

/* --- Barra de Búsqueda --- */
.search-bar-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
}

#search-bar {
    width: 100%;
    padding: 15px 20px 15px 45px;
    font-size: 1rem;
    border: 1px solid #ddd;
    border-radius: 30px;
    box-sizing: border-box;
}

#search-bar:focus {
    outline: none;
    border-color: #b30000;
    box-shadow: 0 0 5px rgba(179, 0, 0, 0.2);
}

/* --- Filtro por categorías --- */
.blog-cat-filter {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 20px;
}

.blog-cat-pill {
    padding: 7px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 20px;
    background: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    color: #777;
    cursor: pointer;
    transition: all 0.15s;
}

.blog-cat-pill:hover {
    border-color: #bbb;
    color: #444;
}

.blog-cat-pill.active {
    background: #b30000;
    border-color: #b30000;
    color: #fff;
}

/* --- Parrilla de Artículos --- */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    padding: 40px 0;
}

.no-results {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    padding: 40px;
}

/* --- Tarjeta de Artículo --- */
.article-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.article-card:hover .article-image {
    transform: scale(1.03);
}

.article-image-container {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
    border-radius: 8px 8px 0 0;
    background: linear-gradient(135deg, #f8f7eb 0%, #f0f0f0 100%);
}

.article-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    transition: transform 0.3s ease;
}

.article-content {
    padding: 20px;
    flex-grow: 1;
}

.article-date {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 10px;
}

.article-title {
    font-size: 1.3rem;
    margin: 0 0 10px 0;
    color: #b30000;
}

.article-description {
    font-size: 0.9rem;
    color: #555;
    line-height: 1.5;
    margin: 0 0 8px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-summary {
    font-size: 1rem;
    color: #333;
    line-height: 1.6;
}

.read-time {
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    backdrop-filter: blur(5px);
}

/* ══════════════════════════════════════════════════════════════
   2. ARTÍCULO INDIVIDUAL (blog/article.html)
   ══════════════════════════════════════════════════════════════ */

/* --- Layout del artículo --- */
.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header del artículo --- */
.article-header {
    text-align: center;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.article-header h1 {
    font-size: 2.2rem;
    color: #222;
    line-height: 1.3;
    margin: 12px 0 0;
}

.article-meta {
    color: #666;
    font-size: 0.9rem;
    margin-top: 10px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.article-cover {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 30px;
}

/* --- Contenido: títulos de sección (h2, h3) --- */
.blog-section-title {
    color: #111;
    margin-top: 40px;
    margin-bottom: 20px;
    font-weight: 700;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 10px;
}

h2.blog-section-title {
    font-size: 1.6rem;
}

h3.blog-section-title {
    font-size: 1.3rem;
}

/* --- Contenido: párrafos --- */
.blog-paragraph {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333;
    margin-bottom: 25px;
}

/* --- Contenido: listas --- */
.blog-list {
    margin-bottom: 25px;
    padding-left: 20px;
    font-size: 1.05rem;
    line-height: 1.6;
    color: #333;
}

.blog-list li {
    margin-bottom: 10px;
}

/* --- Contenido: imágenes --- */
.blog-image-container {
    margin: 35px 0;
    text-align: center;
}

.blog-image-container img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.blog-image-container figcaption {
    font-size: 0.9rem;
    color: #666;
    margin-top: 10px;
    font-style: italic;
}

.image-credit {
    display: block;
    font-size: 0.75rem;
    color: #999;
    text-transform: uppercase;
    font-style: normal;
    margin-top: 4px;
    letter-spacing: 0.5px;
}

/* --- Contenido: highlight (dato clave) --- */
.blog-highlight {
    background: #e3f2fd;
    border-left: 5px solid #1976d2;
    padding: 20px;
    margin: 30px 0;
    border-radius: 4px;
    font-size: 1.05rem;
    color: #0d47a1;
}

/* --- Contenido: pros y contras --- */
.pros-cons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 35px 0;
}

.pros-box, .cons-box {
    padding: 20px;
    border-radius: 12px;
}

.pros-box {
    background: #f1f8e9;
    border: 1px solid #c5e1a5;
}

.cons-box {
    background: #ffebee;
    border: 1px solid #ffcdd2;
}

.pros-box h3, .cons-box h3 {
    margin-top: 0;
    font-size: 1.1rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pros-box ul, .cons-box ul {
    padding-left: 20px;
    margin: 0;
}

.pros-box li, .cons-box li {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .pros-cons-grid { grid-template-columns: 1fr; }
}

/* --- Contenido: tablas --- */
.table-responsive {
    overflow-x: auto;
    margin: 30px 0;
}

.blog-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
    min-width: 500px;
}

.blog-table th, .blog-table td {
    border: 1px solid #ddd;
    padding: 12px 15px;
    text-align: left;
}

.blog-table th {
    background-color: #f5f5f5;
    font-weight: 700;
}

.blog-table tr:nth-child(even) {
    background-color: #fafafa;
}

/* --- Contenido: botón CTA --- */
.cta-button-container {
    text-align: center;
    margin: 50px 0;
}

.btn-article {
    display: inline-block;
    background-color: #000;
    color: #fff;
    padding: 15px 35px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.btn-article:hover {
    background-color: #333;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

/* --- Contenido: referencias --- */
.blog-references {
    margin-top: 60px;
    padding: 25px;
    border-top: 1px solid #eee;
    background-color: #fafafa;
    border-radius: 8px;
}

.blog-references h4 {
    margin-top: 0;
    font-size: 1rem;
    text-transform: uppercase;
    color: #888;
    letter-spacing: 1px;
}

.blog-references ul {
    list-style: none;
    padding: 0;
}

.blog-references li {
    margin-bottom: 8px;
}

.blog-references a {
    color: #555;
    text-decoration: none;
    font-size: 0.9rem;
}

.blog-references a:hover {
    color: #000;
    text-decoration: underline;
}

/* ══════════════════════════════════════════════════════════════
   3. RESPONSIVE
   ══════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
    .blog-page-header h1 { font-size: 2rem; }
    .blog-page-header p { font-size: 1rem; }
    .articles-grid { grid-template-columns: 1fr; gap: 20px; }
    .article-header h1 { font-size: 1.7rem; }
    .article-meta { flex-direction: column; gap: 6px; }
    .blog-cat-filter { gap: 6px; }
    .blog-cat-pill { font-size: 0.75rem; padding: 5px 12px; }
}