/* NEXUS-IA — thème futuriste dark */
:root{
  --bg:#05070f;
  --bg2:#0a0f22;
  --card:#0d142e;
  --line:#1e2a55;
  --cyan:#22d3ee;
  --violet:#a78bfa;
  --magenta:#f472b6;
  --text:#e2e8f0;
  --muted:#94a3b8;
  --radius:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:'Space Grotesk',system-ui,-apple-system,'Segoe UI',sans-serif;
  background:radial-gradient(1200px 600px at 80% -10%,#1e1b4b 0%,transparent 60%),
             radial-gradient(900px 500px at 10% 0%,#0e7490 0%,transparent 55%),
             var(--bg);
  color:var(--text);
  line-height:1.65;
  min-height:100vh;
}
a{color:var(--cyan)}
.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  max-width:1100px;margin:auto;padding:14px 22px;
  display:flex;align-items:center;justify-content:space-between;
}
.logo{
  font-family:'Orbitron',sans-serif;font-weight:800;letter-spacing:2px;
  font-size:1.15rem;color:#fff;text-decoration:none;
}
.logo b{background:linear-gradient(90deg,var(--cyan),var(--violet),var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.menu a{color:var(--muted);text-decoration:none;margin-left:22px;font-size:.9rem;font-weight:600}
.menu a:hover,.menu a.active{color:#fff}
.wrap{max-width:1100px;margin:auto;padding:0 22px}
.hero{
  padding:72px 0 36px;text-align:left;
  display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;
}
@media(max-width:860px){.hero{grid-template-columns:1fr}}
.kicker{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:2px;
  color:var(--cyan);border:1px solid #164e63;background:rgba(34,211,238,.08);
  padding:6px 14px;border-radius:100px;margin-bottom:16px;
}
.hero h1{
  font-family:'Orbitron',sans-serif;
  font-size:clamp(2rem,4.5vw,3.2rem);line-height:1.1;color:#fff;margin-bottom:16px;
}
.hero h1 span{background:linear-gradient(90deg,var(--cyan),var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:1.05rem;max-width:560px}
.hero-cta{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:12px 24px;border-radius:12px;font-weight:700;
  text-decoration:none;font-size:.92rem;border:1px solid transparent;
}
.btn-primary{background:linear-gradient(90deg,#0891b2,#7c3aed);color:#fff;
  box-shadow:0 8px 30px rgba(34,211,238,.35)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.03)}
.hero-visual img{
  width:100%;height:320px;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--line);box-shadow:0 20px 60px rgba(0,0,0,.5);
}
.section-title{
  font-family:'Orbitron',sans-serif;color:#fff;font-size:1.3rem;
  margin:40px 0 18px;display:flex;align-items:center;gap:12px;
}
.section-title::before{content:"";width:28px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta))}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding-bottom:10px}
@media(max-width:860px){.grid{grid-template-columns:1fr}}
.card{
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.01)),
             var(--card);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .2s,border-color .2s;
}
.card:hover{transform:translateY(-6px);border-color:var(--cyan)}
.card img{width:100%;height:180px;object-fit:cover;display:block}
.card-body{padding:20px}
.tag{font-size:.68rem;font-weight:800;letter-spacing:1.5px;color:var(--cyan)}
.card h2{font-size:1.05rem;line-height:1.4;margin:8px 0 10px}
.card h2 a{color:#fff;text-decoration:none}
.card h2 a:hover{color:var(--cyan)}
.card p{color:var(--muted);font-size:.9rem}
.card .meta{margin-top:14px;font-size:.76rem;color:var(--muted);
  display:flex;justify-content:space-between}
.readmore{display:inline-block;margin-top:12px;font-size:.85rem;font-weight:700;text-decoration:none}
.video-block{
  margin:36px 0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;display:grid;grid-template-columns:1fr 1.2fr;
}
@media(max-width:860px){.video-block{grid-template-columns:1fr}}
.video-text{padding:28px}
.video-text h3{color:#fff;font-family:'Orbitron',sans-serif;margin-bottom:10px}
.video-text p{color:var(--muted);font-size:.92rem}
.video-frame{aspect-ratio:16/9;background:#000}
.video-frame iframe{width:100%;height:100%;border:0}
.article-hero img{width:100%;height:340px;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--line);margin:26px 0}
.prose{max-width:760px}
.prose h2{color:#fff;font-family:'Orbitron',sans-serif;font-size:1.2rem;margin:28px 0 12px}
.prose p{color:#cbd5e1;margin-bottom:16px}
.prose blockquote{border-left:3px solid var(--cyan);padding:8px 18px;color:#fff;
  background:rgba(34,211,238,.07);border-radius:0 12px 12px 0;margin:20px 0}
.back{display:inline-block;margin:26px 0 6px;color:var(--muted);text-decoration:none;font-size:.88rem}
.back:hover{color:#fff}
footer{border-top:1px solid var(--line);margin-top:50px;padding:26px 0 46px;
  color:var(--muted);font-size:.83rem}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.badge-temp{display:inline-block;margin-top:10px;font-size:.72rem;background:rgba(244,114,182,.12);
  border:1px solid #9d174d;color:var(--magenta);padding:5px 12px;border-radius:100px}