/*
Theme Name: IA Business Boost
Theme URI: https://example.com
Description: Thème enfant léger pour blog IA (landing + blog + produits).
Author: Vous
Version: 1.0
Template: twentytwentyfour
Text Domain: ia-business-boost
*/

:root{
  --primary:#1A3C8E; /* Bleu tech */
  --secondary:#3FA9F5; /* Bleu clair */
  --accent:#00FFB2; /* Vert CTA */
  --text:#333333;
  --muted:#6b7280;
  --bg:#ffffff;
  --card:#f8fafc;
}

html{scroll-behavior:smooth}
body{color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,"Segoe UI",Roboto,Inter,Arial,sans-serif}

/* Layout helpers */
.container{max-width:1200px;margin-inline:auto;padding:clamp(16px,2vw,32px)}
.grid{display:grid;gap:clamp(16px,2vw,24px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1024px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:768px){.grid-3,.grid-2,.grid-4{grid-template-columns:1fr}}

.section{padding:clamp(40px,6vw,80px) 0}
.section-title{font-size:clamp(24px,3.2vw,36px);font-weight:800;margin:0 0 8px}
.section-sub{color:var(--muted);margin:0 0 24px}

/* Header */
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #eef2f7}
.header .bar{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:inherit}
.brand-logo{inline-size:40px;block-size:40px;object-fit:contain;border-radius:8px}
.brand-name{font-weight:900;letter-spacing:.2px}
.nav a{padding:10px 12px;border-radius:10px;color:var(--text);text-decoration:none;font-weight:600}
.nav a:hover{background:var(--card)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:12px;font-weight:800;text-decoration:none}
.btn-primary{background:var(--accent);color:#052e1c}
.btn-outline{border:2px solid var(--primary);color:var(--primary)}
/* mobile menu */
.menu-toggle{display:none;background:transparent;border:none;font-size:28px}
@media (max-width:900px){
  .nav{display:none;position:absolute;inset-inline:0;top:64px;background:#fff;border-bottom:1px solid #eef2f7}
  .nav.open{display:block}
  .nav ul{display:flex;flex-direction:column;padding:8px}
  .menu-toggle{display:block}
}

/* Hero */
.hero{background:linear-gradient(135deg,#eef4ff 0%,#ffffff 60%)}
.hero-wrap{display:grid;gap:24px;grid-template-columns:1.2fr .8fr;align-items:center}
.hero h1{font-size:clamp(32px,5vw,56px);line-height:1.05;margin:0 0 12px}
.hero p{color:#475569;margin:0 0 20px}
.hero img{width:100%;border-radius:18px;box-shadow:0 10px 30px rgba(26,60,142,.18)}
@media (max-width:900px){.hero-wrap{grid-template-columns:1fr}}

/* Cards */
.card{background:var(--card);border:1px solid #e5e7eb;border-radius:16px;padding:18px}
.card h3{margin:0 0 8px;font-size:20px}
.card p{margin:0;color:var(--muted)}
.card .img{aspect-ratio:16/10;background:#e9eef9;border-radius:12px;margin-bottom:12px}

/* Products */
.product .price{font-weight:900;color:var(--primary)}

/* Blog */
.post{display:flex;flex-direction:column}
.post .thumb{aspect-ratio:16/10;background:#e9eef9;border-radius:12px;overflow:hidden}
.post img{width:100%;height:100%;object-fit:cover}
.post h3{margin:10px 0 8px;font-size:20px}
.post .meta{color:var(--muted);font-size:14px;margin-bottom:8px}

/* Newsletter */
.news{background:linear-gradient(180deg,#f7fbff,#fff)}
.news form{display:flex;gap:12px;flex-wrap:wrap}
.news input[type="email"]{flex:1;min-width:240px;padding:12px 14px;border:1px solid #cbd5e1;border-radius:12px}
.news button{border:none}

/* Footer */
.footer{border-top:1px solid #eef2f7;color:#64748b}
.footer .cols{display:grid;gap:24px;grid-template-columns:2fr 1fr 1fr}
.footer a{text-decoration:none;color:inherit}
@media (max-width:900px){.footer .cols{grid-template-columns:1fr}}