/* layout.css — header, nav, menu mobile, footer */

/* Header sticky */
.site-header{
  position:sticky;top:0;left:0;right:0;
  z-index:var(--z-header);
  background:color-mix(in srgb,var(--bg) 92%,transparent);
  backdrop-filter:saturate(140%) blur(8px);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-med),background var(--t-med);
}
.site-header.is-scrolled{
  background:color-mix(in srgb,var(--bg) 96%,transparent);
  border-bottom-color:var(--border);
}
.header-inner{
  height:var(--header-h-mobile);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
@media (min-width:900px){.header-inner{height:var(--header-h);}}

/* Brand (logo) */
.brand{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--text);
}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:50%;
  background:color-mix(in srgb,var(--accent) 14%,var(--bg));
  color:var(--accent);
  flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1;}
.brand-name{font-family:var(--ff-display);font-size:1.32rem;font-weight:500;letter-spacing:.005em;}
.brand-name em{font-style:italic;color:var(--accent);font-weight:500;}
.brand-tag{
  font-family:var(--ff-ui);
  font-size:.66rem;text-transform:uppercase;letter-spacing:.22em;
  color:var(--text-mute);margin-top:5px;
}
@media (max-width:480px){.brand-tag{display:none;}}

/* Nav desktop */
.nav-desktop{display:none;}
@media (min-width:900px){
  .nav-desktop{
    display:flex;align-items:center;gap:28px;
    font-family:var(--ff-ui);font-size:.95rem;
  }
  .nav-desktop a{
    color:var(--text);
    position:relative;
    padding:6px 0;
  }
  .nav-desktop a::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;
    height:1.5px;background:var(--accent);
    transform:scaleX(0);transform-origin:left;
    transition:transform var(--t-med);
  }
  .nav-desktop a:hover{text-decoration:none;}
  .nav-desktop a:hover::after{transform:scaleX(1);}
}

/* Header CTA (call) — desktop seulement */
.header-cta{display:none;}
@media (min-width:900px){
  .header-cta{
    display:inline-flex;align-items:center;gap:8px;
    padding:10px 18px;border-radius:999px;
    background:var(--accent);color:#fff;
    font-family:var(--ff-ui);font-size:.92rem;font-weight:500;
    transition:transform var(--t-fast),background var(--t-fast);
  }
  .header-cta:hover{background:#1b2d1f;text-decoration:none;transform:translateY(-1px);}
  .header-cta svg{width:16px;height:16px;}
}

/* Burger (PIEGE PROD #8 2026-06-07) : fixed top-right, hors flux */
.burger{
  position:fixed;
  top:calc((var(--header-h-mobile) - 44px) / 2);
  right:16px;
  width:44px;height:44px;
  display:grid;place-items:center;
  background:transparent;border:0;cursor:pointer;
  z-index:var(--z-burger);
}
.burger span{
  position:relative;display:block;
  width:22px;height:2px;background:var(--text);
  transition:transform var(--t-med),background var(--t-med);
}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:22px;height:2px;background:var(--text);
  transition:transform var(--t-med),top var(--t-med);
}
.burger span::before{top:-7px;}
.burger span::after{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:900px){.burger{display:none;}}

/* Menu mobile (pattern obligatoire) */
.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) + 24px) 24px 40px;
  display:flex;flex-direction:column;gap:14px;
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
  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:1.5rem;
  padding:10px 0;
  color:var(--text);
  border-bottom:1px solid var(--border);
}
.menu-mobile a:hover{text-decoration:none;color:var(--accent);}
.menu-mobile .menu-actions{
  display:flex;flex-direction:column;gap:10px;
  margin-top:12px;
  border:0;
}
.menu-mobile .menu-actions a{
  border:0;justify-content:center;text-align:center;
  font-family:var(--ff-ui);font-size:1rem;
  padding:14px 18px;
  border-radius:12px;
}
.menu-mobile .menu-actions .btn-call{
  background:var(--accent);color:#fff;
}
.menu-mobile .menu-actions .btn-wa{
  background:var(--wa-green);color:#fff;
}
.menu-mobile .menu-meta{
  margin-top:auto;padding-top:24px;
  font-family:var(--ff-ui);font-size:.85rem;color:var(--text-mute);
  border:0;
}
@media (min-width:900px){.menu-mobile{display:none;}}

/* Footer */
.site-footer{
  background:var(--surface-deep);
  color:var(--text-on-dark);
  padding:56px 0 28px;
  margin-top:0; /* PIEGE PROD #12 : pas de margin-top sur le footer */
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;}}
.footer-col h4{
  font-family:var(--ff-ui);
  font-size:.78rem;text-transform:uppercase;letter-spacing:.2em;
  color:var(--accent-on-dark);margin-bottom:14px;font-weight:500;
}
.footer-col .brand{color:#fff;margin-bottom:14px;}
.footer-col .brand-name{color:#fff;}
.footer-col .brand-name em{color:var(--accent-on-dark);}
.footer-col .brand-mark{background:rgba(255,255,255,.08);color:var(--accent-on-dark);}
.footer-blurb{
  font-family:var(--ff-body);font-size:.95rem;color:var(--text-on-dark-2);max-width:42ch;
}
.footer-col ul li{padding:6px 0;font-family:var(--ff-ui);font-size:.95rem;color:var(--text-on-dark);}
.footer-col ul li a:hover{color:var(--accent-on-dark);text-decoration:none;}
.footer-col .footer-info{font-family:var(--ff-ui);font-size:.95rem;color:var(--text-on-dark);}
.footer-col .footer-info p{margin-bottom:8px;color:var(--text-on-dark);}
.footer-col .footer-info p strong{color:#fff;}
.footer-bar{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-family:var(--ff-ui);font-size:.82rem;color:var(--text-on-dark-2);
}
.footer-bar button{
  font:inherit;color:var(--text-on-dark);
  text-decoration:underline;text-underline-offset:3px;
  text-decoration-color:rgba(255,255,255,.3);
}
.footer-bar button:hover{color:#fff;text-decoration-color:var(--accent-on-dark);}

/* FAB mobile (bouton appel flottant) */
.fab-call{
  position:fixed;
  right:18px;bottom:18px;
  width:58px;height:58px;
  border-radius:50%;
  background:var(--accent);color:#fff;
  display:grid;place-items:center;
  box-shadow:0 12px 28px color-mix(in srgb,var(--accent) 45%,transparent),
             0 2px 8px rgba(0,0,0,.15);
  z-index:var(--z-fab);
  opacity:0;visibility:hidden;transform:translateY(20px);
  transition:opacity var(--t-med),transform var(--t-med),visibility 0s linear var(--t-med);
}
.fab-call.is-visible{opacity:1;visibility:visible;transform:none;transition:opacity var(--t-med),transform var(--t-med);}
.fab-call svg{width:24px;height:24px;}
.fab-call:hover{text-decoration:none;background:#1b2d1f;}
@media (min-width:900px){.fab-call{display:none;}}