/* ==========================================================
   Blog Praxia AI — éditorial premium B2B modulaire
   Palette : crème #F5F0E8 / noir #1A1A1A / terracotta #C45A2F / olive #6B7B4F
   ========================================================== */
:root{
  --bg:#F5F0E8;
  --bg-alt:#EDE5D6;
  --bg-deep:#1A1A1A;
  --ink:#1A1A1A;
  --ink-dim:#5A5550;
  --ink-mute:#8A857D;
  --accent:#C45A2F;          /* terracotta */
  --accent-deep:#9E4425;
  --accent-soft:#F2E2D4;
  --olive:#6B7B4F;
  --olive-soft:#D8DCC8;
  --line:rgba(26,26,26,.1);
  --line-soft:rgba(26,26,26,.05);
  --radius:2px;              /* matches site moduleness */
  --font-display:'Fraunces',serif;
  --font-body:'Inter',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-weight:400;line-height:1.6;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:500;line-height:1.15;letter-spacing:-.012em}
.mono{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
a{color:inherit;text-decoration:none}

/* ===== Header (matches main site) ===== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  padding:1.5rem 3rem;
  display:flex;align-items:center;justify-content:space-between;
  transition:all .35s ease;
}
.header.scrolled{background:rgba(245,240,232,.92);backdrop-filter:blur(20px);padding:1rem 3rem;border-bottom:1px solid var(--line-soft)}
.logo{display:flex;align-items:center;gap:.7rem;font-family:var(--font-display);font-size:1.32rem;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.logo-mark{
  width:36px;height:36px;
  background:url('/assets/logo-mark.svg') no-repeat center;
  background-size:contain;flex-shrink:0;border-radius:2px;
}
.header nav{display:flex;gap:2.2rem;font-size:.92rem;font-weight:500}
.header nav a{color:var(--ink-dim);transition:color .2s}
.header nav a:hover{color:var(--accent)}
.header nav a.active{color:var(--accent)}
.btn{
  padding:.78rem 1.5rem;border-radius:var(--radius);
  font-weight:500;font-size:.92rem;letter-spacing:.01em;
  transition:all .3s cubic-bezier(.4,0,.2,1);
  display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;
}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{background:var(--accent);transform:translateY(-1px);box-shadow:0 8px 24px rgba(196,90,47,.22)}

/* ===== Blog index hero ===== */
.blog-hero{
  padding:9rem 3rem 3rem;
  display:grid;grid-template-columns:1.1fr 1fr;gap:3rem;align-items:center;
  max-width:1280px;margin:0 auto;
}
.blog-hero-content{max-width:640px}
.blog-hero-kicker{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:.78rem;
  color:var(--accent);letter-spacing:.12em;text-transform:uppercase;font-weight:500;
  margin-bottom:1.6rem;
}
.blog-hero-kicker::before{
  content:'';width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(196,90,47,.18);
}
.blog-hero h1{font-size:clamp(2.4rem,4.8vw,3.8rem);margin-bottom:1.4rem;font-weight:500}
.blog-hero h1 em{font-style:italic;color:var(--accent);font-weight:500}
.blog-hero p{font-size:1.08rem;color:var(--ink-dim);line-height:1.6;max-width:560px;margin-bottom:2rem}

/* Decorative module bricks (rappel logo P) */
.blog-hero-modules{
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,80px);gap:8px;
  max-width:340px;margin-left:auto;
}
.blog-hero-modules .m{border-radius:2px;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase}
.blog-hero-modules .m-ink{background:var(--ink);color:var(--bg);grid-column:1/3;grid-row:1}
.blog-hero-modules .m-acc{background:var(--accent);color:var(--bg);grid-column:3;grid-row:1/3}
.blog-hero-modules .m-olive{background:var(--olive);color:var(--bg);grid-column:1;grid-row:2/4}
.blog-hero-modules .m-soft{background:var(--accent-soft);color:var(--ink);grid-column:2;grid-row:2}
.blog-hero-modules .m-osoft{background:var(--olive-soft);color:var(--ink);grid-column:2;grid-row:3}
.blog-hero-modules .m-bg{background:var(--bg-alt);color:var(--ink);grid-column:3;grid-row:3}

@media(max-width:980px){
  .blog-hero{grid-template-columns:1fr;padding:7rem 1.5rem 2rem}
  .blog-hero-modules{margin-left:0;max-width:100%}
}

/* Filters */
.filters{
  max-width:1280px;margin:0 auto 2.6rem;padding:0 3rem;
  display:flex;gap:.5rem;flex-wrap:wrap;
}
.filter-btn{
  padding:.5rem 1.1rem;border-radius:2px;
  font-size:.84rem;font-weight:500;
  border:1px solid var(--line);background:transparent;color:var(--ink-dim);
  cursor:pointer;font-family:var(--font-body);transition:all .2s;
}
.filter-btn:hover{border-color:var(--accent);color:var(--accent)}
.filter-btn.active{background:var(--ink);color:var(--bg);border-color:var(--ink)}

/* ===== Cards grid ===== */
.articles-grid{
  max-width:1280px;margin:0 auto;padding:0 3rem 5rem;
  display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem;
}
.article-card{
  background:#fff;border:1px solid var(--line-soft);
  border-radius:2px;overflow:hidden;
  display:flex;flex-direction:column;
  transition:all .3s ease;
}
.article-card:hover{
  transform:translateY(-4px);
  box-shadow:0 18px 50px rgba(26,26,26,.08);
  border-color:var(--accent);
}
.card-img{
  height:170px;
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.card-img.ti-ink{background:var(--ink)}
.card-img.ti-acc{background:var(--accent)}
.card-img.ti-olive{background:var(--olive)}
.card-img.ti-soft{background:var(--accent-soft)}
.card-img-bricks{
  position:absolute;inset:0;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(3,1fr);gap:3px;padding:6px;
  pointer-events:none;
}
.card-img-bricks span{display:block;background:rgba(255,255,255,.04);border-radius:2px}
.card-img-bricks span.hi{background:rgba(255,255,255,.18)}
.card-img-icon{
  position:relative;z-index:1;
  font-family:var(--font-display);font-weight:600;
  font-size:2.4rem;color:var(--bg);line-height:1;
}
.card-img.ti-soft .card-img-icon{color:var(--ink)}
.card-img-tag{
  position:absolute;top:.85rem;left:.85rem;z-index:2;
  font-family:var(--font-mono);font-size:.68rem;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--bg);background:rgba(26,26,26,.6);
  padding:.32rem .7rem;border-radius:2px;
}
.card-img.ti-soft .card-img-tag{color:var(--ink);background:rgba(255,255,255,.7)}
.card-body{padding:1.4rem 1.4rem 1.6rem;display:flex;flex-direction:column;gap:.7rem;flex:1}
.card-meta{
  display:flex;gap:.5rem;align-items:center;
  font-family:var(--font-mono);font-size:.7rem;
  color:var(--accent);letter-spacing:.06em;text-transform:uppercase;
}
.dot-sep{color:var(--ink-mute);opacity:.5}
.article-card h2{font-family:var(--font-display);font-size:1.28rem;font-weight:500;line-height:1.25;color:var(--ink)}
.article-card p{font-size:.93rem;color:var(--ink-dim);line-height:1.55;flex:1}
.card-cta{
  margin-top:.4rem;font-weight:600;color:var(--accent);
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.88rem;font-family:var(--font-body);transition:gap .2s;
}
.article-card:hover .card-cta{gap:.8rem}

/* ===== Article page ===== */
.article{
  padding:8rem 3rem 3rem;
  max-width:780px;margin:0 auto;
}
.back-link{display:inline-block;margin-bottom:1.4rem;font-size:.88rem;color:var(--ink-dim);font-weight:500;transition:color .2s}
.back-link:hover{color:var(--accent)}
.article-cat{
  display:inline-block;
  background:var(--accent-soft);color:var(--accent);
  font-family:var(--font-mono);font-size:.72rem;
  letter-spacing:.18em;text-transform:uppercase;
  padding:.4rem .9rem;border-radius:2px;
  font-weight:500;margin-bottom:1.4rem;
}
.article h1{font-size:clamp(2rem,4.4vw,3.2rem);margin-bottom:1.2rem;line-height:1.12}
.article-lead{
  font-size:1.14rem;color:var(--ink-dim);
  line-height:1.6;font-weight:400;
  border-left:3px solid var(--accent);
  padding-left:1.3rem;margin:1.4rem 0 1.8rem;
}
.article-meta{
  display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;
  padding:1.1rem 0;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  font-size:.84rem;color:var(--ink-dim);
}
.article-hero{
  margin:2rem 0 2.4rem;
  border-radius:2px;overflow:hidden;
  background:var(--ink);
  box-shadow:0 18px 50px rgba(26,26,26,.10);
}
.article-hero img{width:100%;display:block}
.article-body p{font-size:1.05rem;line-height:1.74;color:var(--ink-dim);margin-bottom:1.3rem}
.article-body p.intro{font-size:1.12rem;color:var(--ink);line-height:1.65;margin-bottom:1.6rem}
.article-body strong{color:var(--ink);font-weight:600}
.article-body em{color:var(--accent);font-style:italic}
.article-body a{color:var(--accent);font-weight:500;border-bottom:1px solid rgba(196,90,47,.3);transition:all .2s}
.article-body a:hover{border-bottom-color:var(--accent)}
.article-body h2{
  font-size:clamp(1.55rem,3vw,2rem);margin:2.6rem 0 1rem;padding-top:.9rem;
  position:relative;
}
.article-body h2::before{
  content:'';position:absolute;top:0;left:0;
  width:50px;height:3px;background:var(--accent);
}
.article-body h3{font-size:1.28rem;margin:1.8rem 0 .8rem}
.article-body ul,.article-body ol{margin:1.2rem 0 1.4rem 1.4rem;display:flex;flex-direction:column;gap:.6rem}
.article-body li{font-size:1.02rem;color:var(--ink-dim);line-height:1.6}
.article-body li::marker{color:var(--accent);font-weight:600}
.article-body blockquote{
  margin:1.8rem 0;padding:1.2rem 1.5rem;
  border-left:4px solid var(--accent);
  background:var(--accent-soft);
  font-family:var(--font-display);font-size:1.06rem;font-style:italic;
  color:var(--ink);line-height:1.5;
}
.cta-inline{
  margin:2.2rem 0;padding:1.4rem 1.6rem;
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-left:4px solid var(--accent);
  font-size:1rem;color:var(--ink);
}
.cta-inline strong{color:var(--ink)}
.cta-inline a{color:var(--accent);font-weight:600;border-bottom:1px solid var(--accent)}

.article-cta-box{
  margin-top:3rem;padding:2.4rem 2rem;
  background:var(--ink);color:var(--bg);
  border-radius:2px;text-align:left;
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.4fr 1fr;gap:2rem;align-items:center;
  box-shadow:0 28px 60px rgba(26,26,26,.20);
}
.article-cta-box::before{
  content:'';position:absolute;
  top:0;right:0;width:30%;height:100%;background:var(--accent);
}
.article-cta-box .cta-text{position:relative;z-index:1}
.article-cta-box .cta-text p{font-family:var(--font-display);font-size:1.4rem;color:var(--bg);font-weight:500;line-height:1.3;margin:0}
.btn-primary{
  display:inline-flex;align-items:center;gap:.5rem;
  background:var(--bg);color:var(--ink);
  padding:.95rem 1.8rem;border-radius:2px;
  font-weight:600;font-size:.95rem;
  transition:all .2s ease;border:none;cursor:pointer;
  position:relative;z-index:1;
  justify-self:end;
}
.btn-primary:hover{background:var(--accent);color:var(--bg)}

@media(max-width:640px){
  .article-cta-box{grid-template-columns:1fr;text-align:center}
  .btn-primary{justify-self:center}
}

.article-internal-links{
  margin-top:2.6rem;padding-top:1.8rem;border-top:1px solid var(--line);
}
.article-internal-links ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.article-internal-links a{color:var(--ink);font-weight:500;border-bottom:1px solid var(--line)}
.article-internal-links a:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ===== Footer ===== */
.footer{
  padding:3rem;background:var(--ink);color:rgba(245,240,232,.62);
  border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.2rem;
  font-size:.86rem;
}
.footer .logo{color:rgba(245,240,232,.92)}
.footer-links a{color:rgba(245,240,232,.62);transition:color .2s}
.footer-links a:hover{color:var(--accent)}
.footer-sep{color:var(--ink-mute);margin:0 .4rem}

@media(max-width:980px){
  .header{padding:1rem 1.5rem}
  .header.scrolled{padding:.85rem 1.5rem}
  .header nav{display:none}
  .articles-grid{grid-template-columns:1fr 1fr;gap:1.2rem;padding:0 1.5rem 4rem}
  .article{padding:7rem 1.5rem 2.4rem}
  .filters{padding:0 1.5rem}
}
@media(max-width:640px){
  .articles-grid{grid-template-columns:1fr}
  .footer{flex-direction:column;text-align:center;padding:2rem 1.5rem}
}