/* HEXALYS v2 — design moderne sobre
   Charte : bleu profond + jaune solaire, teintes complémentaires pastel
   Typo : Inter, weights 400-600 (jamais 800), sizes réduites, lettrage plus aéré
*/

:root{
  /* Bleus */
  --primary:#1B273F;
  --primary-2:#0F1726;
  --primary-3:#4E5D7C;
  --ink:#1F2637;

  /* Accent jaune */
  --accent:#F6A724;
  --accent-2:#E39012;
  --accent-soft:#FEE9C0;

  /* Neutrals */
  --white:#FFFFFF;
  --cream:#F8F6F0;
  --gray-bg:#F5F6F8;
  --gray-100:#EDF0F4;
  --line:#E4E7EC;
  --line-2:#D9DEE6;
  --muted:#6B7280;
  --muted-2:#4A5568;

  /* Bleus pastel & complémentaires (touches de couleur) */
  --ice:#EEF3FB;
  --sky:#CADCFC;
  --slate:#7891B4;
  --sand:#EFE5D2;
  --terra:#E8B78E;
  --plum:#B6A0BE;

  /* Layout */
  --max:1160px;
  --pad:clamp(20px,4vw,40px);
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;

  /* Ombres légères */
  --shadow-1:0 1px 2px rgba(15,23,38,.04);
  --shadow-2:0 1px 2px rgba(15,23,38,.05), 0 8px 24px rgba(15,23,38,.05);
  --shadow-3:0 2px 6px rgba(15,23,38,.06), 0 20px 48px rgba(15,23,38,.08);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--white);
  color:var(--ink);
  font-size:15.5px;
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--accent-2)}

/* Typography */
h1,h2,h3,h4,h5{margin:0;font-weight:500;letter-spacing:-.015em;color:var(--primary)}
h1{font-size:clamp(30px,4.5vw,46px);line-height:1.1;font-weight:500;letter-spacing:-.02em}
h2{font-size:clamp(24px,3vw,32px);line-height:1.2;font-weight:500}
h3{font-size:19px;line-height:1.3;font-weight:600;letter-spacing:-.01em}
h4{font-size:15.5px;font-weight:600}
p{margin:0 0 12px}
strong,b{font-weight:600;color:var(--primary)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent-2);
}
.eyebrow::before{
  content:"";width:22px;height:1px;background:var(--accent);display:inline-block;
}
.lead{color:var(--muted-2);font-size:16px;line-height:1.7;max-width:64ch}

/* Wrap */
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.section{padding:clamp(56px,7vw,96px) 0}
.section-tight{padding:clamp(36px,5vw,64px) 0}
.section-cream{background:var(--cream)}
.section-ice{background:var(--ice)}
.section-gray{background:var(--gray-bg)}
.section-dark{background:var(--primary);color:#fff}
.section-dark h1,.section-dark h2,.section-dark h3{color:#fff}
.section-dark .lead{color:rgba(255,255,255,.75)}
.section-dark .eyebrow{color:var(--accent)}
.section-dark a{color:var(--accent)}

/* Header + Nav */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:82px;gap:20px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:56px;width:auto}
.primary-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.primary-nav a{padding:9px 12px;font-size:14px;font-weight:500;color:var(--ink);border-radius:8px;transition:background .15s ease}
.primary-nav a:hover{background:var(--gray-bg);color:var(--primary)}
.primary-nav a[aria-current="page"]{color:var(--primary);background:var(--gray-bg)}
.primary-nav .cta-lite{background:var(--primary);color:#fff;padding:9px 16px;font-weight:500}
.primary-nav .cta-lite:hover{background:var(--primary-2);color:#fff}
.has-sub{position:relative}
.has-sub > a::after{content:"›";display:inline-block;margin-left:6px;transform:rotate(90deg);font-size:12px;color:var(--muted)}
.submenu{
  position:absolute;top:calc(100% + 8px);left:0;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-2);padding:8px;min-width:240px;
  opacity:0;transform:translateY(8px);pointer-events:none;transition:.16s;
}
.has-sub:hover .submenu,.has-sub:focus-within .submenu{opacity:1;transform:translateY(0);pointer-events:auto}
.submenu a{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;font-size:13.5px;color:var(--ink)}
.submenu a:hover{background:var(--gray-bg);color:var(--primary)}
.submenu a .ico{width:20px;height:20px;color:var(--accent-2);flex:0 0 20px}
.menu-toggle{
  display:none;background:none;border:1px solid var(--line);width:40px;height:40px;
  border-radius:10px;color:var(--primary);cursor:pointer;align-items:center;justify-content:center;
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:10px;font-size:14px;font-weight:500;
  transition:all .15s ease;border:1px solid transparent;cursor:pointer;
}
.btn svg{width:14px;height:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--primary)}
.btn-accent:hover{background:var(--accent-2);color:var(--primary)}
.btn-ghost{background:transparent;color:var(--primary);border:1px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--primary);background:var(--gray-bg)}
.btn-lite{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn-lite:hover{background:rgba(255,255,255,.16);color:#fff}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:500;font-size:14px}
.link-arrow svg{width:14px;height:14px;transition:transform .18s ease}
.link-arrow:hover{color:var(--accent-2)}
.link-arrow:hover svg{transform:translateX(3px)}

/* Badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  padding:5px 10px;border-radius:999px;
}
.badge-accent{background:var(--accent-soft);color:var(--accent-2)}
.badge-slate{background:var(--ice);color:var(--slate)}
.badge-sand{background:var(--sand);color:#8B6D46}
.badge-plum{background:#EADEEE;color:#6B4F79}

/* Grid utilities */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.stack{display:flex;flex-direction:column;gap:16px}
.row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* Cards */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:.18s ease;
}
.card:hover{border-color:var(--line-2);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card-ico{
  width:44px;height:44px;border-radius:10px;
  display:grid;place-items:center;margin-bottom:16px;
}
.card-ico svg{width:22px;height:22px}
.card-ico.accent{background:var(--accent-soft);color:var(--accent-2)}
.card-ico.ice{background:var(--ice);color:var(--slate)}
.card-ico.sand{background:var(--sand);color:#8B6D46}
.card-ico.plum{background:#EADEEE;color:#6B4F79}
.card h3{margin-bottom:6px}
.card p{color:var(--muted);font-size:14.5px;margin-bottom:0}
.card-num{
  font-size:10.5px;font-weight:700;letter-spacing:.15em;
  color:var(--accent-2);text-transform:uppercase;margin-bottom:10px;
}
.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.card-tags span{background:var(--gray-bg);color:var(--muted-2);font-size:11px;font-weight:500;padding:3px 9px;border-radius:999px}

/* Section head */
.s-head{max-width:640px;margin-bottom:40px}
.s-head.center{margin:0 auto 40px;text-align:center}
.s-head h2{margin:12px 0 14px}
.s-head p{margin:0}

/* Stat cards (chiffres clés) */
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.stat{padding:18px;border:1px solid var(--line);border-radius:12px;background:#fff}
.stat .s-lbl{font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin-bottom:8px}
.stat .s-val{font-size:24px;font-weight:500;color:var(--primary);letter-spacing:-.01em;line-height:1.1}
.stat .s-val small{font-size:14px;font-weight:500;color:var(--muted);letter-spacing:0}
.stat .s-desc{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.5}
.stat.tinted-ice{background:var(--ice);border-color:transparent}
.stat.tinted-sand{background:var(--sand);border-color:transparent}
.stat.tinted-accent{background:var(--accent-soft);border-color:transparent}

/* Hero avec vidéo background */
.hero{
  position:relative;padding:clamp(100px,14vw,180px) 0 clamp(80px,10vw,120px);
  background:var(--primary);color:#fff;overflow:hidden;min-height:min(720px,90vh);
  display:flex;align-items:center;
}
.hero-bg-video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;
  pointer-events:none;
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,rgba(15,23,38,.82) 0%,rgba(15,23,38,.65) 50%,rgba(15,23,38,.5) 100%),
             linear-gradient(180deg,rgba(15,23,38,.35) 0%,rgba(15,23,38,.55) 100%);
}
.hero > .wrap{position:relative;z-index:2;width:100%}
.hero-copy{max-width:780px}
.hero-copy .expert-pill{
  display:inline-flex;align-items:center;gap:10px;padding:7px 16px 7px 8px;
  background:rgba(255,255,255,.12);backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.24);border-radius:999px;
  font-size:12.5px;font-weight:600;color:#fff;letter-spacing:.04em;
  margin-bottom:26px;
}
.hero-copy .expert-pill .p-star{
  width:24px;height:24px;border-radius:50%;background:var(--accent);
  display:grid;place-items:center;color:var(--primary);font-size:12px;flex:0 0 24px;
  box-shadow:0 2px 6px rgba(246,167,36,.4);
}
.hero-copy h1{margin-bottom:20px;color:#fff}
.hero-copy h1 .a{color:var(--accent);font-style:normal}
.hero-copy .lead{margin-bottom:32px;font-size:17px;color:rgba(255,255,255,.92);max-width:64ch}
.hero-copy .lead b{color:#fff;font-weight:600}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-cta .btn-primary{background:var(--accent);color:var(--primary)}
.hero-cta .btn-primary:hover{background:var(--accent-2);color:var(--primary);transform:translateY(-1px)}
.hero-cta .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.3);backdrop-filter:blur(8px)}
.hero-cta .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5);color:#fff}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:24px;margin-top:38px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.75);font-size:13px;
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta svg{width:14px;height:14px;color:var(--accent)}
/* Layout ancien conservé pour rétro-compat (hero-grid/hero-visual n'est plus utilisé) */
.hero-grid{display:block}
.hero-visual{display:none}

/* Sub hero (pages internes) */
.sub-hero{
  padding:clamp(48px,6vw,80px) 0 clamp(28px,4vw,48px);
  background:linear-gradient(180deg,var(--cream) 0%,#fff 100%);border-bottom:1px solid var(--line);
}
.crumbs{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--line-2)}
.crumbs .current{color:var(--primary);font-weight:500}

/* Split (2 colonnes texte + visuel) */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.reverse{direction:rtl}
.split.reverse > *{direction:ltr}

/* Timeline */
.timeline{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:36px}
.tl-step{padding:20px;border:1px solid var(--line);border-radius:12px;background:#fff;position:relative}
.tl-step .tl-n{font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--accent-2);margin-bottom:12px}
.tl-step h4{margin-bottom:6px}
.tl-step p{font-size:13.5px;color:var(--muted);margin:0}

/* Bullets */
.bullets{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.bullets li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted-2)}
.bullets li::before{
  content:"";width:6px;height:6px;background:var(--accent);border-radius:50%;
  margin-top:9px;flex:0 0 6px;
}

/* FAQ */
.faq{display:grid;gap:10px;max-width:820px;margin:32px auto 0}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px;transition:.18s}
.faq details[open]{border-color:var(--accent);box-shadow:var(--shadow-2)}
.faq summary{list-style:none;cursor:pointer;font-weight:500;font-size:15.5px;color:var(--primary);display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent-2);font-size:22px;font-weight:400;line-height:1;transition:transform .18s}
.faq details[open] summary::after{content:"−"}
.faq p{margin:12px 0 0;font-size:14.5px;color:var(--muted-2);line-height:1.65}

/* Footer */
.footer{background:var(--primary);color:#fff;padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
.footer-brand p{color:rgba(255,255,255,.7);font-size:13.5px;margin-top:12px}
.footer-brand img{filter:brightness(0) invert(1);height:32px}
.footer h5{color:#fff;font-size:12px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px;font-weight:600}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{margin-bottom:8px}
.footer li a{color:rgba(255,255,255,.72);font-size:13.5px}
.footer li a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:rgba(255,255,255,.5);font-size:12.5px}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent)}

/* CTA final block */
.cta-block{
  background:var(--primary);color:#fff;border-radius:var(--radius-lg);
  padding:clamp(36px,5vw,64px);text-align:center;position:relative;overflow:hidden;
}
.cta-block::before{
  content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;
  border-radius:50%;background:radial-gradient(closest-side,rgba(246,167,36,.18),transparent);
}
.cta-block h2{color:#fff;margin-bottom:14px;position:relative}
.cta-block .lead{color:rgba(255,255,255,.78);margin:0 auto 26px;text-align:center;position:relative;max-width:56ch}
.cta-block .row{justify-content:center;position:relative}

/* Charts (SVG frames) */
.chart-frame{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.chart-title{font-size:13.5px;font-weight:600;color:var(--primary);margin-bottom:4px}
.chart-sub{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.chart-caption{font-size:12px;color:var(--muted);font-style:italic;margin-top:12px}
.chart-legend{display:flex;flex-wrap:wrap;gap:14px;margin-top:14px;font-size:12px;color:var(--muted)}
.chart-legend .sw{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:middle}

/* Filter chips (références) */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.chip{background:#fff;border:1px solid var(--line);color:var(--muted-2);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:500;cursor:pointer;transition:.15s}
.chip:hover{border-color:var(--primary)}
.chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.chip .count{background:rgba(255,255,255,.16);color:inherit;font-size:11px;padding:1px 6px;border-radius:999px;margin-left:6px}
.chip:not(.active) .count{background:var(--gray-bg);color:var(--muted)}

/* References grid */
.refs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.ref-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.18s}
.ref-card:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--shadow-2)}
.ref-cover{aspect-ratio:16/9;background:var(--ice);display:grid;place-items:center;color:var(--slate)}
.ref-cover svg{width:44px;height:44px}
.ref-body{padding:16px}
.ref-body h4{margin-bottom:4px}
.ref-body .meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.ref-body p{margin:0;color:var(--muted-2);font-size:13.5px}
.ref-tag{display:inline-block;font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:3px 8px;border-radius:6px;margin-top:8px}

/* Form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:12.5px;font-weight:600;color:var(--muted-2);letter-spacing:.02em}
.form-field input,.form-field select,.form-field textarea{
  border:1px solid var(--line-2);background:#fff;border-radius:8px;
  padding:10px 12px;font-family:inherit;font-size:14.5px;color:var(--ink);
  transition:.15s;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);
}
.form-field textarea{min-height:120px;resize:vertical}

/* Mobile nav overlay */
.mn{
  position:fixed;inset:0;background:rgba(15,23,38,.5);z-index:60;
  opacity:0;pointer-events:none;transition:opacity .18s;overflow:hidden;
}
html,body{overflow-x:hidden}
.mn.open{opacity:1;pointer-events:auto}
.mn-inner{
  position:absolute;top:0;right:0;height:100%;width:min(340px,88vw);background:#fff;
  padding:24px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;
  transform:translateX(100%);transition:transform .22s ease;
}
.mn.open .mn-inner{transform:translateX(0)}
.mn a{padding:12px 14px;border-radius:8px;font-weight:500;color:var(--primary);font-size:15px}
.mn a:hover{background:var(--gray-bg)}
.mn .mn-sep{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);padding:16px 14px 6px;font-weight:700}
.mn-close{
  align-self:flex-end;background:none;border:1px solid var(--line);width:36px;height:36px;
  border-radius:8px;color:var(--primary);font-size:16px;cursor:pointer;margin-bottom:8px;
}

/* Responsive */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .split{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .primary-nav{display:none}
  .menu-toggle{display:inline-flex}
}
@media (max-width:760px){
  /* Force 1 colonne sur tous les grids inline de sub-hero (hero intérieurs) */
  .sub-hero .grid[style*="grid-template-columns"]{grid-template-columns:1fr!important;gap:28px!important}
  .sub-hero .irve-hero-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
}