/* ============================================
   innoSMART Blog — Styles partagés
   ============================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fafafa;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* ---------- Variables ---------- */
:root {
  --noir: #0d0d0d;
  --gris-fonce: #2a2a2a;
  --gris: #666;
  --gris-clair: #e5e5e5;
  --gris-bg: #f5f5f5;
  --blanc: #ffffff;
  --accent: #f5a623;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --max-width: 740px;
  --transition: 0.2s ease;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--blanc);
  border-bottom: 1px solid var(--gris-clair);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 20px;
  font-weight: 600;
  color: var(--noir);
  letter-spacing: -0.5px;
}
.logo span { color: var(--accent); }
.nav-links a {
  font-size: 14px;
  color: var(--gris);
  margin-left: 28px;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--noir); }
.nav-links a.active { color: var(--noir); font-weight: 500; }

/* ---------- Hero Blog ---------- */
.blog-hero {
  background: var(--noir);
  color: var(--blanc);
  padding: 64px 0 48px;
  text-align: center;
}
.blog-hero h1 {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.blog-hero p {
  font-size: 17px;
  color: #aaa;
  max-width: 520px;
  margin: 0 auto;
}

/* ---------- Liste Articles ---------- */
.articles-list {
  padding: 48px 0 64px;
}
.article-card {
  background: var(--blanc);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 28px 32px;
  margin-bottom: 24px;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.article-card .meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.article-card .tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  background: rgba(245,166,35,0.1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}
.article-card .date {
  font-size: 13px;
  color: var(--gris);
}
.article-card h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--noir);
  margin-bottom: 10px;
  line-height: 1.3;
}
.article-card .excerpt {
  font-size: 15px;
  color: var(--gris);
  line-height: 1.55;
}
.article-card .read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--noir);
  transition: gap var(--transition);
}
.article-card:hover .read-more { gap: 10px; }

/* ---------- Article Page ---------- */
.article-page {
  background: var(--blanc);
  padding: 48px 0 64px;
}
.article-page .container { max-width: 680px; }

.article-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--gris-clair);
}
.article-header .meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.article-header .tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  background: rgba(245,166,35,0.1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}
.article-header .date, .article-header .read-time {
  font-size: 13px;
  color: var(--gris);
}
.article-header h1 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--noir);
  letter-spacing: -0.8px;
}

/* ---------- Contenu Article ---------- */
.article-content h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--noir);
  margin: 40px 0 16px;
  line-height: 1.3;
}
.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--gris-fonce);
  margin: 28px 0 12px;
}
.article-content p {
  font-size: 16px;
  line-height: 1.7;
  color: #333;
  margin-bottom: 16px;
}
.article-content strong {
  font-weight: 600;
  color: var(--noir);
}
.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
  color: #333;
}
.article-content li {
  margin-bottom: 10px;
  line-height: 1.6;
  padding-left: 4px;
}
.article-content li::marker { color: var(--gris); }

/* Tableaux */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 32px;
  font-size: 15px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.comparison-table thead {
  background: var(--noir);
  color: var(--blanc);
}
.comparison-table th, .comparison-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--gris-clair);
}
.comparison-table tbody tr:nth-child(even) { background: var(--gris-bg); }
.comparison-table tbody tr:hover { background: #eee; }
.comparison-table td:first-child { font-weight: 500; color: var(--noir); }

/* Étapes */
.steps-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 15px;
}
.steps-table th, .steps-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--gris-clair);
}
.steps-table thead { background: var(--gris-bg); }
.steps-table th { font-weight: 600; font-size: 13px; text-transform: uppercase; color: var(--gris); }
.steps-table td:first-child {
  width: 40px;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
}

/* CTA Box */
.cta-box {
  background: var(--noir);
  color: var(--blanc);
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  margin: 40px 0;
  text-align: center;
}
.cta-box p {
  font-size: 16px;
  line-height: 1.6;
  color: #ccc;
  margin-bottom: 16px;
}
.cta-box p strong { color: var(--blanc); }
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--noir);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
}
.cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(245,166,35,0.3);
}

/* Chapeau */
.lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--gris-fonce);
  font-weight: 400;
  margin-bottom: 28px;
  padding: 0 0 20px;
  border-bottom: 1px solid var(--gris-clair);
}

/* Navigation article */
.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--gris-clair);
}
.article-nav a {
  font-size: 14px;
  color: var(--gris);
  max-width: 45%;
  transition: color var(--transition);
}
.article-nav a:hover { color: var(--noir); }
.article-nav a strong {
  display: block;
  font-size: 15px;
  color: var(--noir);
  margin-top: 4px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--noir);
  color: #888;
  padding: 40px 0;
  text-align: center;
  font-size: 13px;
}
.site-footer a { color: #aaa; transition: color var(--transition); }
.site-footer a:hover { color: var(--blanc); }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .blog-hero h1 { font-size: 28px; }
  .blog-hero p { font-size: 15px; }
  .article-card { padding: 22px 20px; }
  .article-card h2 { font-size: 19px; }
  .article-header h1 { font-size: 26px; }
  .article-content h2 { font-size: 20px; }
  .comparison-table { font-size: 13px; }
  .comparison-table th, .comparison-table td { padding: 10px 12px; }
  .nav-links a { margin-left: 16px; font-size: 13px; }
  .cta-box { padding: 22px 20px; }
}