/* ===================================================================== */
/* === STYLES POUR LA PAGE BLOG D'ALGOPREDIX (v2.0) === */
/* ===================================================================== */

/* --- Corps principal --- */
.blog-main {
    background-color: var(--dark-surface);
    padding-top: 70px; /* Hauteur du header fixe */
}

/* --- Section Hero (Titre de la page) --- */
.blog-hero {
    position: relative;
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    background-color: var(--dark-bg);
    overflow: hidden;
}

.blog-hero .hero-background {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%236366f1" stop-opacity="0.1"/><stop offset="100%" stop-color="%236366f1" stop-opacity="0"/></radialGradient></defs><circle cx="50%" cy="100%" r="400" fill="url(%23a )"/></svg>');
    background-repeat: no-repeat;
    background-position: center bottom;
}

.blog-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
}

.blog-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Section de la grille d'articles --- */
.articles-section {
    padding: var(--spacing-3xl) 0;
}

/* --- Barre de filtres --- */
.filter-bar {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.filter-btn {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 50px;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition-normal);
}

.filter-btn:hover {
    background-color: var(--dark-border);
    color: var(--text-white);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--text-white);
    border-color: transparent;
}

/* --- Grille des articles --- */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.article-card {
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

/* --- Article en vedette --- */
.article-card.featured-card {
    grid-column: 1 / -1; /* Prend toute la largeur */
    flex-direction: row;
}

.featured-card .card-image-container {
    width: 55%;
    height: auto;
}

.featured-card .card-content {
    width: 45%;
    padding: var(--spacing-2xl);
    justify-content: center;
}

.featured-card .card-title {
    font-size: var(--font-size-3xl);
}

.featured-card .card-excerpt {
    font-size: var(--font-size-lg);
    display: block; /* S'assure que l'extrait est visible */
}

.card-image-container {
    height: 220px;
    background-color: var(--dark-border);
}

.card-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-content {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-category {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--primary-light);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-white);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.3;
}

.card-excerpt {
    font-size: var(--font-size-base);
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    display: none; /* Caché pour les cartes normales */
}

.card-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: auto;
}

.card-meta .separator {
    margin: 0 0.5rem;
}

/* --- Responsive Design --- */
@media (max-width: 992px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
    .article-card.featured-card {
        flex-direction: column;
    }
    .featured-card .card-image-container,
    .featured-card .card-content {
        width: 100%;
    }
    .featured-card .card-image-container {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .blog-title {
        font-size: var(--font-size-4xl);
    }
    .featured-card .card-title {
        font-size: var(--font-size-2xl);
    }
}