/* =====================================================================
   Blog Optédif — Le Blog de la Formation made in Optedif
   Charte reprise du site WordPress d'origine (thème seoboost) :
   accent turquoise #6ed3cf, typographies Montserrat + Cabin, fond blanc.
   Reconstruction HTML statique — méthode "Cahier des charges SEO en silo".
   ===================================================================== */

:root{
  --teal:#6ed3cf;
  --teal-dark:#3bb7b2;
  --teal-ink:#1f7d79;
  --ink:#333333;
  --ink-soft:#555555;
  --muted:#767676;
  --line:#e6e6e6;
  --paper:#ffffff;
  --soft:#f6f7f7;
  --soft-2:#eef7f6;
  --dark:#1c1e1f;
  --shadow:0 6px 24px rgba(28,30,31,.08);
  --shadow-lg:0 18px 50px rgba(28,30,31,.14);
  --radius:14px;
  --maxw:1180px;
  --font-head:'Montserrat',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-body:'Cabin',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-ink);text-decoration:none;transition:color .2s}
a:hover{color:var(--teal-dark)}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--dark);line-height:1.2;font-weight:700}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(28,30,31,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}
.brand{display:flex;flex-direction:column;line-height:1.05}
.brand .brand-title{font-family:var(--font-head);font-weight:800;font-size:1.5rem;color:var(--dark);letter-spacing:-.5px}
.brand .brand-title b{color:var(--teal-dark)}
.brand .brand-tag{font-size:.74rem;color:var(--muted);letter-spacing:.3px;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.main-nav a{
  font-family:var(--font-head);font-weight:600;font-size:.83rem;color:var(--ink);
  padding:8px 11px;border-radius:8px;text-transform:none;
}
.main-nav a:hover,.main-nav a.active{background:var(--soft-2);color:var(--teal-ink)}
.main-nav .cta{background:var(--teal);color:#0c3a38;padding:9px 16px}
.main-nav .cta:hover{background:var(--teal-dark);color:#fff}
.nav-toggle{display:none;background:none;border:0;font-size:1.5rem;color:var(--dark);cursor:pointer;padding:6px}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(135deg,#effaf9 0%,#ffffff 60%);
  border-bottom:1px solid var(--line);
  padding:62px 0 50px;
}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-head);
  font-weight:700;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--teal-ink)}
.hero .eyebrow::before{content:"";width:26px;height:2px;background:var(--teal)}
.hero h1{font-size:clamp(2rem,4.4vw,3.1rem);margin:16px 0 14px;max-width:18ch}
.hero p.lead{font-size:1.12rem;color:var(--ink-soft);max-width:60ch}
.hero-cats{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.hero-cats a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;
  font-family:var(--font-head);font-weight:600;font-size:.8rem;color:var(--ink)}
.hero-cats a:hover{border-color:var(--teal);color:var(--teal-ink);background:var(--soft-2)}

/* ---------- Sub-hero (pages internes) ---------- */
.subhero{background:var(--dark);color:#fff;padding:46px 0 38px}
.subhero h1{color:#fff;font-size:clamp(1.7rem,3.4vw,2.5rem);margin:8px 0 0;max-width:24ch}
.subhero .eyebrow{color:var(--teal);font-family:var(--font-head);font-weight:700;
  font-size:.72rem;letter-spacing:.18em;text-transform:uppercase}
.subhero p{color:#cdd3d3;margin-top:12px;max-width:62ch}
.breadcrumb{font-size:.82rem;color:var(--muted);padding:14px 0}
.breadcrumb a{color:var(--ink-soft)}
.breadcrumb a:hover{color:var(--teal-ink)}
.breadcrumb span{color:var(--ink)}

/* ---------- Sections ---------- */
.sec{padding:60px 0}
.sec-sm{padding:42px 0}
.sec-head{margin-bottom:30px}
.sec-head .eyebrow{font-family:var(--font-head);font-weight:700;font-size:.72rem;
  letter-spacing:.18em;text-transform:uppercase;color:var(--teal-ink)}
.sec-head h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-top:8px}

/* ---------- Cartes articles ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:26px}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#d7eeed}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.post-card:hover .thumb img{transform:scale(1.05)}
.post-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.post-card .cat{font-family:var(--font-head);font-weight:700;font-size:.7rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--teal-ink)}
.post-card h3{font-size:1.12rem;margin:9px 0 10px;line-height:1.3}
.post-card h3 a{color:var(--dark)}
.post-card h3 a:hover{color:var(--teal-ink)}
.post-card .excerpt{font-size:.92rem;color:var(--ink-soft);flex:1}
.post-card .meta{margin-top:14px;font-size:.78rem;color:var(--muted);display:flex;gap:10px;align-items:center}
.post-card .more{font-family:var(--font-head);font-weight:700;font-size:.82rem;color:var(--teal-ink);margin-top:14px}

/* ---------- Article (longform) ---------- */
.article-wrap{padding:48px 0 60px}
.article-grid{display:grid;grid-template-columns:1fr 280px;gap:48px;align-items:start}
.article-body{max-width:760px}
.article-hero-img{border-radius:var(--radius);overflow:hidden;margin:0 0 28px;box-shadow:var(--shadow)}
.article-body h2{font-size:1.55rem;margin:38px 0 14px}
.article-body h3{font-size:1.22rem;margin:28px 0 10px}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{margin:0 0 18px 1.25rem}
.article-body li{margin-bottom:8px}
.article-body img{border-radius:12px;margin:24px auto;box-shadow:var(--shadow)}
.article-body figure{margin:24px 0}
.article-body figure.aligncenter,.article-body .aligncenter{text-align:center}
.article-body figcaption{font-size:.82rem;color:var(--muted);text-align:center;margin-top:8px}
.article-body a{text-decoration:underline;text-underline-offset:2px}
.article-body strong{color:var(--dark)}
.article-body blockquote{border-left:4px solid var(--teal);padding:6px 0 6px 20px;margin:24px 0;
  color:var(--ink-soft);font-style:italic;background:var(--soft-2)}
.article-meta{font-size:.85rem;color:var(--muted);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.tag-pill{display:inline-block;background:var(--soft-2);color:var(--teal-ink);border-radius:999px;
  padding:4px 12px;font-family:var(--font-head);font-weight:600;font-size:.75rem}

/* Sidebar sticky */
.article-aside{position:sticky;top:96px}
.aside-card{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:22px}
.aside-card h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:14px}
.aside-card ul{list-style:none}
.aside-card li{margin-bottom:11px;font-size:.9rem;line-height:1.4}
.aside-card.cta{background:var(--dark);color:#fff}
.aside-card.cta h4{color:var(--teal)}
.aside-card.cta p{font-size:.9rem;color:#cdd3d3;margin-bottom:14px}
.btn{display:inline-block;background:var(--teal);color:#0c3a38;font-family:var(--font-head);font-weight:700;
  padding:11px 20px;border-radius:10px;font-size:.9rem;transition:background .2s,transform .15s}
.btn:hover{background:var(--teal-dark);color:#fff;transform:translateY(-2px)}
.btn-block{display:block;text-align:center}

/* Related */
.related{border-top:1px solid var(--line);padding-top:40px;margin-top:48px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--dark);color:#fff;padding:54px 0;text-align:center}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,3vw,2.1rem)}
.cta-band p{color:#cdd3d3;max-width:54ch;margin:12px auto 22px}

/* ---------- Formulaire ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field.full{grid-column:1/-1}
.field label{font-family:var(--font-head);font-weight:600;font-size:.85rem}
.field input,.field textarea{
  border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-family:var(--font-body);
  font-size:.95rem;background:#fff;transition:border-color .2s,box-shadow .2s;width:100%}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(110,211,207,.25)}
.field textarea{min-height:140px;resize:vertical}
.form-note{font-size:.85rem;margin-top:10px;min-height:1.2em}
.form-note.ok{color:#1f7d79;font-weight:600}
.form-note.err{color:#c0392b;font-weight:600}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden}
.faq-item summary{cursor:pointer;padding:16px 20px;font-family:var(--font-head);font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--teal-dark);font-size:1.3rem;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-a{padding:0 20px 18px;color:var(--ink-soft);font-size:.95rem}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#c4cccc;padding:54px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.site-footer h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px}
.site-footer .brand-title{color:#fff;font-family:var(--font-head);font-weight:800;font-size:1.3rem}
.site-footer .brand-title b{color:var(--teal)}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:9px;font-size:.9rem}
.site-footer a{color:#c4cccc}
.site-footer a:hover{color:var(--teal)}
.site-footer p{font-size:.9rem;margin-bottom:9px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;color:#8a9292}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Pagination/list helpers ---------- */
.list-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.count-badge{font-family:var(--font-head);font-weight:600;font-size:.85rem;color:var(--muted)}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .article-grid{grid-template-columns:1fr}
  .article-aside{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  body{font-size:16px}
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:10px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 14px;border-radius:8px}
  .main-nav .cta{text-align:center;margin-top:6px}
  .header-inner{position:relative}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}