/* ============================================
   ARTICLES — Style complémentaire
   ============================================ */

/* --- Articles Hero --- */
.articles-hero {
    padding: 140px 0 60px;
    text-align: center;
    position: relative;
    z-index: 1;
}

/* --- Filters --- */
.article-filters {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 36px;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 100px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-2);
    font-family: 'Outfit', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* --- Articles Grid --- */
.articles-section {
    padding-top: 40px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

/* --- Article Card --- */
.article-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.article-card:hover {
    border-color: rgba(var(--accent-rgb), 0.25);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.article-card:hover::before { opacity: 1; }

.article-card.expanded {
    grid-column: 1 / -1;
    cursor: default;
    transform: none;
}

.article-card.hidden-by-filter {
    display: none;
}

/* Card Header */
.article-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.article-category {
    padding: 4px 12px;
    border-radius: 100px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.article-date {
    font-size: 0.78rem;
    color: var(--text-3);
}

/* Card Title */
.article-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
    transition: color var(--transition-fast);
}

.article-card:hover .article-card-title {
    color: var(--accent);
}

/* Card Excerpt */
.article-card-excerpt {
    color: var(--text-2);
    font-size: 0.92rem;
    line-height: 1.65;
    margin-bottom: 16px;
}

/* Card Meta */
.article-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.read-time {
    font-size: 0.75rem;
    color: var(--text-3);
}

.article-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tag {
    padding: 3px 10px;
    border-radius: 100px;
    border: 1px solid var(--card-border);
    font-size: 0.72rem;
    color: var(--text-3);
    font-weight: 500;
}

/* --- Expanded Article Content --- */
.article-card-content {
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--card-border);
    animation: contentReveal 0.4s ease;
}

@keyframes contentReveal {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.article-body {
    max-width: 720px;
}

.article-body p {
    color: var(--text-2);
    font-size: 1rem;
    line-height: 1.85;
    margin-bottom: 20px;
}

.article-body strong {
    color: var(--accent);
    font-weight: 600;
}

.article-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 32px 0 12px;
    letter-spacing: -0.01em;
    color: var(--text);
}

.article-body ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.article-body li {
    color: var(--text-2);
    font-size: 0.95rem;
    line-height: 1.7;
    padding-left: 20px;
    position: relative;
}

.article-body li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
}

/* Close button for expanded articles */
.article-close {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding: 10px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
    background: transparent;
    color: var(--text-2);
    font-family: 'Outfit', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.article-close:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* --- Empty State --- */
.articles-empty {
    text-align: center;
    padding: 80px 0;
    color: var(--text-3);
    font-size: 1rem;
}

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

    .articles-hero {
        padding: 120px 0 40px;
    }

    .article-filters {
        gap: 8px;
    }

    .filter-btn {
        padding: 6px 14px;
        font-size: 0.82rem;
    }

    .article-card-meta {
        flex-direction: column;
        align-items: flex-start;
    }
}