/* ==========================================================================
   AET — HOME.CSS (page d'accueil + hero de la page formation)
   ========================================================================== */

.hero{padding:64px 0 56px;position:relative;overflow:hidden;}
.hero::before{
  content:'';position:absolute;top:-140px;right:-160px;width:520px;height:520px;
  background:radial-gradient(circle, rgba(245,196,0,.14) 0%, transparent 70%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;position:relative;}
@media (max-width:820px){ .hero-grid{grid-template-columns:1fr;} }

.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.09em;text-transform:uppercase;color:#B8880A;font-weight:700;border:1px solid var(--border);padding:6px 14px;border-radius:100px;margin-bottom:24px;background:var(--surface);}
html[data-theme="dark"] .eyebrow{color:var(--gold);}
.eyebrow span{width:6px;height:6px;border-radius:50%;background:var(--gold);}
.hero h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:700;line-height:1.1;margin-bottom:18px;}
.hero h1 .hl{color:var(--blue);}
.hero p.lede{font-size:15.5px;color:var(--text-2);max-width:50ch;margin-bottom:28px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px;}

.hero-visual{
  background:linear-gradient(160deg, var(--blue-tech), var(--navy));
  border-radius:16px;padding:26px;color:#fff;
  box-shadow:var(--shadow);
}
.hero-visual .chat-line{background:rgba(255,255,255,.08);border-radius:8px;padding:11px 14px;margin-bottom:10px;font-size:13.5px;}
.hero-visual .chat-line.ai{background:var(--gold);color:var(--navy);font-weight:600;}
.hero-visual .chat-tag{font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.5);margin:0 0 5px;}

/* PROGRAMS (index.html) */
.programs{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media (max-width:760px){ .programs{grid-template-columns:1fr;} }
.program-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;box-shadow:var(--shadow);}
.program-card h3{font-size:1.3rem;margin:14px 0 8px;}
.program-card p.desc{color:var(--text-2);font-size:14px;margin-bottom:18px;flex:1;}
.program-meta{display:flex;gap:18px;margin-bottom:22px;font-size:12px;color:var(--text-2);}
.program-meta b{color:var(--text);display:block;font-family:var(--font-head);font-size:17px;}

/* WHY / VALUE GRID */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
@media (max-width:820px){ .why-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:520px){ .why-grid{grid-template-columns:1fr;} }
.why-item{background:var(--surface);padding:26px 22px;transition:background .2s;}
.why-item:hover{background:var(--surface-2);}
.why-item .ic{font-size:22px;margin-bottom:12px;}
.why-item h4{font-size:14.5px;margin-bottom:7px;}
.why-item p{font-size:13px;color:var(--text-2);}

/* NIVEAUX CARDS (formation-ia-prompting.html) */
.niv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
@media (max-width:900px){ .niv-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:520px){ .niv-grid{grid-template-columns:1fr;} }
.niv-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border-top:3px solid var(--niv-color, var(--blue));transition:transform .15s;}
.niv-card:hover{transform:translateY(-2px);}
.niv-card .niv-emoji{font-size:20px;margin-bottom:10px;}
.niv-card h3{font-size:1.05rem;margin-bottom:6px;}
.niv-card .niv-dur{font-size:12px;color:var(--text-2);margin-bottom:12px;}
.niv-card p.niv-result{font-size:13px;color:var(--text-2);margin-bottom:16px;}
.niv-card .niv-count{font-size:12px;color:var(--text-2);margin-bottom:14px;}
.niv-card .niv-count b{color:var(--text);}