/* Feuille partagée du blog Influlab IA.
   Les articles historiques gardent leur <style> inline (chargé après, il prime) ;
   ce fichier apporte la navigation, le fil d'Ariane, la FAQ et le pied de page communs. */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #06080F;
  --bg-card: rgba(255,255,255,0.035);
  --bg-card-hover: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.07);
  --border-med: rgba(255,255,255,0.12);
  --text: #EEF0F8;
  --text-sub: rgba(238,240,248,0.74);
  --text-muted: rgba(238,240,248,0.5);
  --accent: #00FFC2;
  --accent-dim: rgba(0,255,194,0.1);
  --accent-border: rgba(0,255,194,0.25);
  --yellow: #FFD166;
  --red: #FF6B6B;
  --purple: #C084FC;
  --blue: #38BDF8;
}
/* Couleur d'accent par thématique : <body class="theme-tiktok"> etc. */
.theme-youtube { --accent: #FF4444; --accent-dim: rgba(255,68,68,0.1); --accent-border: rgba(255,68,68,0.28); }
.theme-tiktok { --accent: #69C9D0; --accent-dim: rgba(105,201,208,0.12); --accent-border: rgba(105,201,208,0.28); }
.theme-instagram { --accent: #E1306C; --accent-dim: rgba(225,48,108,0.1); --accent-border: rgba(225,48,108,0.28); }
.theme-twitch { --accent: #A970FF; --accent-dim: rgba(169,112,255,0.12); --accent-border: rgba(169,112,255,0.3); }
.theme-strategie { --accent: #C084FC; --accent-dim: rgba(192,132,252,0.1); --accent-border: rgba(192,132,252,0.28); }
.theme-data { --accent: #00FFC2; --accent-dim: rgba(0,255,194,0.1); --accent-border: rgba(0,255,194,0.25); }

html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: 'Inter', system-ui, -apple-system, sans-serif; font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }
img { max-width: 100%; height: auto; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip-link { position: absolute; left: -10000px; top: 8px; z-index: 200; background: var(--text); color: var(--bg); padding: 8px 14px; border-radius: 8px; font-weight: 700; }
.skip-link:focus { left: 8px; }

/* ── En-tête ── */
header { position: sticky; top: 0; z-index: 100; background: rgba(6,8,15,0.88); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; flex-shrink: 0; }
.logo-icon { width: 34px; height: 34px; flex-shrink: 0; }
.logo-name { font-weight: 700; font-size: 16px; color: var(--text); letter-spacing: -0.02em; }
.site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.site-nav a { color: var(--text-sub); text-decoration: none; font-size: 14px; font-weight: 500; padding: 6px 10px; border-radius: 8px; transition: color .15s, background .15s; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text); background: var(--bg-card-hover); }
.header-cta { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 10px; border: none; background: linear-gradient(135deg, var(--accent), #38BDF8aa); color: #06080F; font-weight: 700; font-size: 13px; cursor: pointer; text-decoration: none; transition: opacity .2s; white-space: nowrap; flex-shrink: 0; }
.header-cta:hover { opacity: 0.85; }

/* ── Fil d'Ariane ── */
.breadcrumb { padding-top: 28px; font-size: 13px; color: var(--text-muted); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumb li + li::before { content: "›"; margin-right: 6px; opacity: .6; }
.breadcrumb a { color: var(--text-sub); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb [aria-current] { color: var(--text-muted); }

/* ── Article ── */
.wrapper { max-width: 720px; margin: 0 auto; padding: 0 24px; }
.hero { padding: 40px 0 48px; border-bottom: 1px solid var(--border); }
.category-tag { display: inline-flex; align-items: center; gap: 6px; background: var(--accent-dim); border: 1px solid var(--accent-border); border-radius: 20px; padding: 4px 12px; margin-bottom: 22px; font-size: 11px; font-weight: 700; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; }
.dot-pulse { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:.5} 50%{opacity:1} }
@media (prefers-reduced-motion: reduce) { .dot-pulse { animation: none; } html { scroll-behavior: auto; } }

h1 { font-family: 'DM Serif Display', Georgia, serif; font-weight: 400; font-size: clamp(30px, 5vw, 48px); line-height: 1.12; color: var(--text); letter-spacing: -0.02em; margin-bottom: 18px; }
h1 em { font-style: italic; color: var(--accent); }
.hero-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.hero-intro { font-size: 17px; color: var(--text-sub); line-height: 1.7; margin-bottom: 28px; }

.key-takeaways { background: var(--accent-dim); border: 1px solid var(--accent-border); border-radius: 14px; padding: 18px 22px; margin-bottom: 24px; }
.key-takeaways-title { font-size: 11px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 10px; }
.key-takeaways ul { padding-left: 18px; }
.key-takeaways li { color: var(--text-sub); font-size: 15px; margin-bottom: 6px; }

.toc { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 20px 24px; margin-bottom: 8px; }
.toc-title { font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 12px; }
.toc ol { padding-left: 18px; }
.toc li { margin-bottom: 6px; color: var(--text-muted); }
.toc a { color: var(--text-sub); text-decoration: none; font-size: 14px; transition: color .15s; }
.toc a:hover { color: var(--accent); }

.article-body { padding: 48px 0 80px; }
h2 { font-family: 'DM Serif Display', Georgia, serif; font-weight: 400; font-size: clamp(22px, 3vw, 30px); color: var(--text); line-height: 1.2; margin: 52px 0 18px; letter-spacing: -0.01em; scroll-margin-top: 80px; }
.article-body > h2:first-child { margin-top: 0; }
h3 { font-weight: 700; font-size: 17px; color: var(--text); margin: 32px 0 12px; scroll-margin-top: 80px; }
p { margin-bottom: 20px; color: var(--text-sub); }
strong { color: var(--text); font-weight: 600; }
.article-body ul, .article-body ol { margin: 0 0 20px; padding-left: 22px; color: var(--text-sub); }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.article-body a.cta-btn { text-decoration: none; }

.metric-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin: 28px 0; }
.metric-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; position: relative; overflow: hidden; transition: border-color .2s; }
.metric-card:hover { border-color: var(--border-med); }
.metric-card::before { content: ''; position: absolute; top: 0; right: 0; width: 60px; height: 60px; border-radius: 50%; background: radial-gradient(circle at 100% 0%, var(--card-color, var(--accent)) 0%, transparent 70%); opacity: 0.18; }
.metric-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.metric-value { font-family: 'DM Serif Display', Georgia, serif; font-size: 28px; color: var(--text); line-height: 1; margin-bottom: 4px; }
.metric-bench { font-size: 12px; color: var(--text-muted); }

.callout { border-left: 3px solid; border-radius: 0 12px 12px 0; padding: 16px 20px; margin: 28px 0; background: var(--bg-card); }
.callout-label { font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 8px; }
.callout p { margin-bottom: 0; font-size: 14px; }
.callout p + p { margin-top: 10px; }
.callout-tip { border-color: var(--accent); }
.callout-tip .callout-label { color: var(--accent); }
.callout-warning { border-color: var(--yellow); }
.callout-warning .callout-label { color: var(--yellow); }
.callout-action { border-color: var(--purple); }
.callout-action .callout-label { color: var(--purple); }

.table-wrap { overflow-x: auto; margin: 28px 0; -webkit-overflow-scrolling: touch; }
.table-wrap .compare-table { margin: 0; }
.compare-table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 14px; }
.compare-table caption { caption-side: bottom; text-align: left; font-size: 12px; color: var(--text-muted); padding-top: 10px; }
.compare-table th { padding: 10px 14px; text-align: left; font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; border-bottom: 1px solid var(--border); }
.compare-table td { padding: 12px 14px; color: var(--text-sub); border-bottom: 1px solid var(--border); vertical-align: top; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: var(--bg-card); }
.good { color: #00FFC2; font-weight: 600; }
.bad { color: var(--red); font-weight: 600; }
.neutral { color: var(--yellow); font-weight: 600; }

.steps { display: flex; flex-direction: column; gap: 16px; margin: 28px 0; }
.step { display: flex; gap: 16px; align-items: flex-start; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; transition: border-color .2s; }
.step:hover { border-color: var(--border-med); }
.step-num { width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0; background: var(--accent-dim); border: 1px solid var(--accent-border); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 800; color: var(--accent); margin-top: 2px; }
.step-content h3, .step-content h4 { font-weight: 700; font-size: 15px; color: var(--text); margin: 0 0 4px; }
.step-content p { margin-bottom: 0; font-size: 14px; }

.template-box { background: var(--bg-card); border: 1px dashed var(--border-med); border-radius: 12px; padding: 16px 20px; margin: 20px 0; font-size: 14px; color: var(--text-sub); }
.template-box .template-label { font-size: 11px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 6px; }
.template-box p:last-child { margin-bottom: 0; }

.cta-banner { margin: 48px 0; background: linear-gradient(135deg, var(--accent-dim), rgba(56,189,248,0.05)); border: 1px solid var(--accent-border); border-radius: 18px; padding: 32px 28px; text-align: center; position: relative; overflow: hidden; }
.cta-banner h2, .cta-banner h3 { font-family: 'DM Serif Display', Georgia, serif; font-weight: 400; font-size: 22px; margin: 0 0 10px; }
.cta-banner p { font-size: 14px; margin-bottom: 20px; color: var(--text-muted); }
.cta-btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 28px; border-radius: 12px; border: none; background: linear-gradient(135deg, var(--accent), #38BDF8); color: #06080F; font-weight: 700; font-size: 14px; cursor: pointer; text-decoration: none; transition: opacity .2s, transform .15s; }
.cta-btn:hover { opacity: 0.88; transform: scale(1.02); }
.cta-note { display: block; margin-top: 10px; font-size: 12px; color: var(--text-muted); }

.conclusion { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 28px; margin-top: 48px; }
.conclusion h2, .conclusion h3 { margin-top: 0; color: var(--accent); }
.conclusion h2 { font-size: 22px; }
.conclusion p:last-child { margin-bottom: 0; }

/* ── FAQ (balisage FAQPage : le texte doit rester identique au JSON-LD) ── */
.faq { margin-top: 56px; }
.faq details { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; transition: border-color .2s; }
.faq details[open] { border-color: var(--accent-border); }
.faq summary { cursor: pointer; list-style: none; padding: 16px 48px 16px 20px; font-weight: 600; color: var(--text); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--accent); font-size: 20px; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 20px 16px; }
.faq details p { margin-bottom: 0; font-size: 15px; }

.article-footer { padding: 32px 0; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.author { display: flex; align-items: center; gap: 12px; }
.author-avatar { width: 40px; height: 40px; flex-shrink: 0; }
.author-name { font-weight: 600; font-size: 14px; color: var(--text); }
.author-role { font-size: 12px; color: var(--text-muted); }

.related { background: rgba(255,255,255,0.02); border-top: 1px solid var(--border); padding: 48px 24px; }
.related-inner { max-width: 720px; margin: 0 auto; }
.related h2, .related h3 { font-family: 'DM Serif Display', Georgia, serif; font-weight: 400; font-size: 20px; margin: 0 0 20px; color: var(--text); }
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 14px; }
.related-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; text-decoration: none; transition: border-color .2s, transform .2s; display: block; }
.related-card:hover { border-color: var(--border-med); transform: translateY(-3px); }
.related-card .tag { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.related-card h3, .related-card h4 { font-size: 14px; font-weight: 600; font-family: 'Inter', system-ui, sans-serif; color: var(--text); line-height: 1.4; margin: 0 0 6px; }
.related-card .read-time { font-size: 11px; color: var(--text-muted); }

/* ── Pied de page commun ── */
footer.site-footer { border-top: 1px solid var(--border); padding: 32px 24px; text-align: center; font-size: 13px; color: var(--text-muted); }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px; margin-bottom: 12px; }
.site-footer a { color: var(--text-sub); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer p { margin: 0; color: var(--text-muted); font-size: 12px; }

@media (max-width: 720px) {
  header { padding: 12px 16px; gap: 10px; }
  .site-nav a { padding: 6px 7px; font-size: 13px; }
  .site-nav a.nav-optional { display: none; }
  .logo-name { display: none; }
}
@media (max-width: 600px) {
  .wrapper { padding: 0 16px; }
  h1 { font-size: 28px; }
  .hero { padding: 28px 0 32px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .article-footer { flex-direction: column; align-items: flex-start; }
  .related { padding: 40px 16px; }
  .cta-banner { padding: 26px 18px; }
  .header-cta { padding: 8px 12px; font-size: 12px; }
}
