/* Header + nav + menu mobile + footer */
.site-header{
  position:fixed;top:0;left:0;right:0;
  z-index:var(--z-header);
  height:var(--header-h-mobile);
  background:color-mix(in srgb,var(--bg) 92%,transparent);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,background .3s;
}
.site-header.is-scrolled{
  background:color-mix(in srgb,var(--bg) 96%,transparent);
  border-bottom-color:var(--border);
}
.header-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;
}
@media (min-width:768px){
  .site-header{height:var(--header-h);}
  .header-inner{padding:0 40px;}
}

/* Brand */
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);}
.brand-mark{width:38px;height:38px;color:var(--accent);flex-shrink:0;display:grid;place-items:center;
  background:color-mix(in srgb,var(--accent) 14%,var(--bg));border-radius:50%;padding:7px;}
.brand-mark svg{width:100%;height:100%;display:block;}
.brand-name{font-family:var(--ff-display);font-weight:600;font-size:1.18rem;line-height:1;}
.brand-name em{font-style:italic;color:var(--accent);font-weight:500;}
.brand-tag{display:none;font-family:var(--ff-ui);text-transform:uppercase;letter-spacing:.16em;
  font-size:.66rem;color:var(--text-mute);margin-top:4px;font-weight:500;}
.brand-stack{display:flex;flex-direction:column;line-height:1;}
@media (min-width:640px){.brand-tag{display:block;}}

/* Nav desktop */
.nav-desk{display:none;}
@media (min-width:1024px){
  .nav-desk{display:flex;align-items:center;gap:34px;flex:1;justify-content:center;}
  .nav-desk a{font-family:var(--ff-ui);font-size:.95rem;color:var(--text);font-weight:500;
    position:relative;padding:6px 0;transition:color var(--t-fast);}
  .nav-desk a:hover{color:var(--accent);}
  .nav-desk a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s;}
  .nav-desk a:hover::after{transform:scaleX(1);}
}

/* Header CTA */
.btn.header-cta{display:none;}
@media (min-width:1024px){.btn.header-cta{display:inline-flex;}}

/* Burger */
.burger{
  position:fixed;top:calc((var(--header-h-mobile) - 44px) / 2);right:14px;
  width:44px;height:44px;display:grid;place-items:center;
  background:transparent;border:0;cursor:pointer;z-index:1101;
}
.burger span,.burger span::before,.burger span::after{
  content:"";display:block;width:22px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .3s,opacity .25s,top .3s;
}
.burger span{position:relative;}
.burger span::before{position:absolute;left:0;top:-7px;}
.burger span::after{position:absolute;left:0;top:7px;}
.burger.is-open span{background:transparent;}
.burger.is-open span::before{top:0;transform:rotate(45deg);}
.burger.is-open span::after{top:0;transform:rotate(-45deg);}
@media (min-width:1024px){.burger{display:none;}}

/* Menu mobile */
.menu-mobile{
  position:fixed;top:0;left:0;width:100%;height:100dvh;
  background:var(--bg);z-index:var(--z-menu);
  padding:calc(var(--header-h-mobile) + 28px) 24px 40px;
  display:flex;flex-direction:column;gap:.4rem;
  overflow-y:auto;-webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .35s ease,opacity .35s ease,visibility 0s linear .35s;
}
.menu-mobile.is-open{transform:translateY(0);opacity:1;visibility:visible;
  transition:transform .35s ease,opacity .35s ease;}
.menu-mobile > a{
  font-family:var(--ff-display);font-size:1.6rem;color:var(--text);
  padding:14px 0;border-bottom:1px solid var(--border);transition:color var(--t-fast);
  text-decoration:none;
}
.menu-mobile > a:hover,.menu-mobile > a:focus-visible{color:var(--accent);}
.menu-mobile .menu-cta{display:flex;flex-direction:column;gap:12px;margin-top:22px;border-top:1px solid var(--border);padding-top:22px;}
.menu-mobile .menu-cta .btn{width:100%;justify-content:center;border-bottom:none;padding:14px 22px;
  font-family:var(--ff-ui);font-size:.96rem;}
.menu-mobile .menu-cta .btn-primary{color:#fff;}
.menu-mobile .menu-cta .btn-wa{color:#fff;}
@media (min-width:1024px){.menu-mobile{display:none;}}

/* FAB mobile - bouton appel flottant */
.fab-call{
  position:fixed;right:16px;bottom:18px;z-index:var(--z-fab);
  width:56px;height:56px;border-radius:50%;
  background:var(--accent);color:#fff;
  display:grid;place-items:center;
  box-shadow:0 8px 18px rgba(0,0,0,.20);
  text-decoration:none;
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .3s,transform .3s;
}
.fab-call.is-visible{opacity:1;pointer-events:auto;transform:none;}
.fab-call svg{width:24px;height:24px;}
@media (min-width:1024px){.fab-call{display:none;}}

/* Footer */
.site-footer{background:var(--surface-deep);color:var(--text-on-dark);padding:56px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:48px;}}
.footer-col h4{font-family:var(--ff-display);font-size:1.1rem;color:var(--accent-on-dark);margin-bottom:14px;font-weight:500;}
.footer-col p,.footer-col a{color:var(--text-on-dark);font-size:.95rem;}
.footer-col a{transition:color var(--t-fast);}
.footer-col a:hover{color:var(--accent-on-dark);}
.footer-list{display:flex;flex-direction:column;gap:8px;}
.footer-list li{display:flex;align-items:center;gap:10px;font-size:.95rem;}
.footer-list svg{width:18px;height:18px;color:var(--accent-on-dark);flex-shrink:0;}
.footer-brand .brand-mark{background:color-mix(in srgb,var(--accent-on-dark) 18%,var(--surface-deep));color:var(--accent-on-dark);}
.footer-brand .brand-name{color:var(--text-on-dark);}
.footer-brand .brand-name em{color:var(--accent-on-dark);}
.footer-brand .brand-tag{color:color-mix(in srgb,var(--text-on-dark) 60%,transparent);}
.footer-tag{margin-top:14px;font-size:.92rem;color:color-mix(in srgb,var(--text-on-dark) 78%,transparent);max-width:36ch;}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--border-on-dark);
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;font-size:.85rem;
  color:color-mix(in srgb,var(--text-on-dark) 70%,transparent);}
.footer-bottom button{color:inherit;font-size:.85rem;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom button:hover{color:var(--accent-on-dark);}