/* ============================================================
   SUD FER & MÉTAUX - Articles
   Style cohérent avec styles.css / pages.css (palette accent --accent #f68100)
   ============================================================ */

/* ========== Articles Index : Hero ========== */
.articles-hero {
  position: relative;
  padding: calc(var(--navbar-height) + var(--space-xl)) 0 var(--space-xl);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 70%);
  overflow: hidden;
}
.articles-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1000px 500px at 60% 20%, var(--accent-light), transparent 70%),
    radial-gradient(800px 400px at 20% 40%, rgba(26, 26, 46, 0.04), transparent 60%);
  z-index: 0;
}
.articles-hero .container { position: relative; z-index: 1; }
.articles-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--primary);
  margin-bottom: var(--space-md);
}
.articles-hero h1 span { color: var(--accent); }
.articles-hero .articles-hero__sub {
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 720px;
  line-height: 1.7;
}

/* ========== Articles Grid ========== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
  padding-top: var(--space-lg);
}

/* ========== Article Card ========== */
.article-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  text-decoration: none;
}
.article-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.article-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
  z-index: 2;
}
.article-card:hover::before { transform: scaleY(1); }

.article-card__image {
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
  position: relative;
}
.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.article-card:hover .article-card__image img { transform: scale(1.06); }
.article-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(26, 26, 46, 0.32) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.article-card:hover .article-card__image::after { opacity: 1; }

.article-card__content {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card__content h3 {
  margin: 0 0 var(--space-sm);
  color: var(--primary);
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card__content .article-card__date {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-card__content .article-card__date i { color: var(--accent); width: 16px; height: 16px; }
.article-card__content p {
  color: var(--text-light);
  font-size: 0.95rem;
  flex: 1;
  margin: 0 0 var(--space-md);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card__content .article-card__more {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: gap var(--transition);
}
.article-card__content .article-card__more i { width: 16px; height: 16px; transition: transform var(--transition); }
.article-card:hover .article-card__more { gap: 12px; }
.article-card:hover .article-card__more i { transform: translateX(2px); }

/* ========== Empty State ========== */
.articles-empty {
  text-align: center;
  padding: var(--space-3xl) var(--space-md);
  background: var(--white);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}
.articles-empty i {
  width: 56px; height: 56px;
  color: var(--accent);
  margin-bottom: var(--space-md);
  opacity: 0.7;
}
.articles-empty h3 { color: var(--primary); margin-bottom: var(--space-sm); }
.articles-empty p { color: var(--text-light); max-width: 520px; margin: 0 auto; }

/* ========== Article Single : Back button ========== */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  padding: 10px 18px;
  border: 2px solid var(--accent-light);
  border-radius: 50px;
  margin-bottom: var(--space-md);
  transition: all var(--transition);
  background: var(--white);
  text-decoration: none;
}
.back-btn:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent-hover);
}
.back-btn i { width: 16px; height: 16px; }

/* ========== Article Single : Header ========== */
.article-header {
  padding: calc(var(--navbar-height) + var(--space-xl)) 0 var(--space-xl);
  background:
    radial-gradient(1200px 600px at 60% 10%, var(--accent-light), transparent 60%),
    radial-gradient(900px 500px at 20% 30%, rgba(26, 26, 46, 0.04), transparent 60%),
    linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}
.article-header h1 {
  max-width: 900px;
  margin: 0 0 var(--space-sm);
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--primary);
}
.article-header .article-subtitle {
  font-family: var(--font-heading);
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--text-light);
  font-weight: 500;
  max-width: 800px;
  margin: 0;
  line-height: 1.5;
}

/* ========== Article Single : Image ========== */
.article-image {
  margin: var(--space-lg) 0;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 3px solid var(--accent-light);
}
.article-image img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 600px;
  object-fit: cover;
}

/* ========== Article Single : Content ========== */
.article-text-content {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  margin: var(--space-lg) 0;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}
.article-text-content,
.article-text-content .article_text_content {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
  line-height: 1.75;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.article-text-content p {
  margin: 0 0 var(--space-md);
  color: var(--text);
  line-height: 1.75;
}
.article-text-content p:last-child { margin-bottom: 0; }
.article-text-content strong { color: var(--accent); font-weight: 700; }
.article-text-content em { font-style: italic; }
.article-text-content h2 {
  font-size: 1.6rem;
  margin: var(--space-lg) 0 var(--space-sm);
  color: var(--primary);
  border-left: 4px solid var(--accent);
  padding-left: var(--space-md);
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
}
.article-text-content h3 {
  font-size: 1.25rem;
  margin: var(--space-md) 0 var(--space-sm);
  color: var(--primary);
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.35;
}
.article-text-content ul,
.article-text-content ol {
  margin: 0 0 var(--space-md) var(--space-lg);
  color: var(--text);
  line-height: 1.75;
}
.article-text-content li { margin-bottom: var(--space-xs); }
.article-text-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--gray-50);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-md) 0;
  color: var(--text);
  font-style: italic;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}
.article-text-content a { color: var(--accent); font-weight: 600; text-decoration: underline; }
.article-text-content a:hover { color: var(--accent-hover); }
.article-text-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  margin: var(--space-md) 0;
}
/* Compat anciens articles générés avec <pre> */
.article-text-content pre.article_text_content {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
  margin: 0;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: 1.75;
}

/* ========== Article Single : CTA ========== */
.article-cta-box {
  background: linear-gradient(135deg, var(--accent-light) 0%, rgba(26, 26, 46, 0.04) 100%);
  border: 2px solid var(--accent-light);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  text-align: center;
  margin: var(--space-lg) 0;
}
.article-cta-box h3 {
  margin: 0 0 var(--space-sm);
  color: var(--primary);
  font-family: var(--font-heading);
}
.article-cta-box p {
  color: var(--text-light);
  margin: 0 0 var(--space-md);
}

/* ========== Articles section (suggested / nos articles) ========== */
.articles-section {
  padding: var(--space-2xl) 0;
}
.articles-section--alt { background: var(--gray-50); }
.articles-section__title {
  text-align: center;
  margin-bottom: var(--space-lg);
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--primary);
  font-weight: 700;
}
.articles-section__title span {
  display: inline-block;
  padding-bottom: var(--space-sm);
  border-bottom: 4px solid var(--accent);
}

/* ========== Composant all_articles* (cards-articles) ========== */
.all-articles {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
  max-width: var(--container-max);
  margin: 0 auto;
}
.all-articles__title {
  text-align: center;
  width: 100%;
  padding: var(--space-md);
  margin: 0 0 var(--space-md);
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--primary);
  font-weight: 700;
}
.all-articles__title span {
  display: inline-block;
  padding-bottom: var(--space-sm);
  border-bottom: 4px solid var(--accent);
}

.card-articles {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  flex: 1 1 320px;
  max-width: 380px;
  overflow: hidden;
  text-align: left;
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--gray-200);
  position: relative;
}
.card-articles:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.card-articles::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
  z-index: 2;
}
.card-articles:hover::before { transform: scaleY(1); }
.card-articles a { text-decoration: none; color: inherit; display: block; }

.card-articles-image {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
}
.card-articles-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.card-articles:hover .card-articles-image img { transform: scale(1.06); }

.card-articles-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(26, 26, 46, 0.32) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.card-articles:hover .card-articles-overlay { opacity: 1; }

.card-articles-content { padding: var(--space-lg); }
.card-articles-content h3 {
  font-size: 1.2rem;
  color: var(--primary);
  margin: 0 0 var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-articles-content p.date {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card-articles-content p.date i { color: var(--accent); width: 16px; height: 16px; }
.card-articles-content .read-more {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: gap var(--transition);
}
.card-articles-content .read-more i { width: 16px; height: 16px; transition: transform var(--transition); }
.card-articles:hover .read-more { gap: 12px; }
.card-articles:hover .read-more i { transform: translateX(2px); }

@media (max-width: 768px) {
  .card-articles { max-width: 100%; }
}

/* ========== Reveal animation ========== */
.reveal-article {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal-article.in { opacity: 1; transform: none; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .articles-grid { grid-template-columns: 1fr; gap: var(--space-md); }
  .articles-hero { padding-top: calc(var(--navbar-height) + var(--space-lg)); }
  .article-text-content { padding: var(--space-lg) var(--space-md); }
  .article-cta-box { padding: var(--space-lg) var(--space-md); }
  .article-text-content h2 { font-size: 1.25rem; }
}
@media (max-width: 480px) {
  .article-text-content h2 { font-size: 1.1rem; }
  .article-text-content pre { font-size: 0.95rem; }
}