/* layout.css — header sticky, nav, footer, sections */

/* ========== HEADER ========== */
.site-header{
  position:sticky;
  top:0;
  left:0;
  width:100%;
  z-index:var(--z-header);
  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:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:color-mix(in srgb,var(--bg) 96%,transparent);
  border-bottom-color:var(--border);
  box-shadow:0 8px 24px -16px rgba(26,46,42,.15);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:var(--header-h-mobile);
  padding:0 18px;
}
@media (min-width:768px){
  .header-inner{height:var(--header-h);padding:0 28px;}
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  text-decoration:none;
}
.brand-mark{
  width:36px;height:36px;
  color:var(--accent);
  display:grid;place-items:center;
  background:color-mix(in srgb,var(--accent) 14%,var(--bg));
  border-radius:50%;
  padding:6px;
  flex-shrink:0;
}
.brand-mark svg{width:100%;height:100%;}
.brand-text{display:flex;flex-direction:column;line-height:1;}
.brand-name{
  font-family:var(--ff-display);
  font-weight:600;
  font-size:1.18rem;
  letter-spacing:.005em;
}
.brand-name em{
  font-style:italic;
  font-weight:500;
  color:var(--accent);
}
.brand-tag{
  font-family:var(--ff-ui);
  font-size:.66rem;
  text-transform:uppercase;
  letter-spacing:.18em;
  color:var(--text-mute);
  margin-top:4px;
}
@media (max-width:520px){.brand-tag{display:none;}}

/* Nav desktop */
.nav-desktop{display:none;}
@media (min-width:1024px){
  .nav-desktop{display:flex;align-items:center;gap:30px;}
  .nav-desktop a{
    font-family:var(--ff-ui);
    font-size:.92rem;
    font-weight:500;
    color:var(--text);
    text-decoration:none;
    padding:6px 0;
    position:relative;
  }
  .nav-desktop a::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
    background:var(--accent);
    transform:scaleX(0);transform-origin:left;
    transition:transform var(--dur) var(--ease);
  }
  .nav-desktop a:hover::after,.nav-desktop a[aria-current="page"]::after{transform:scaleX(1);}
}

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

/* Burger : enfant direct du body, position fixed top-right */
.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:calc(var(--z-header) + 10);
}
.burger span,.burger span::before,.burger span::after{
  display:block;
  width:22px;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.burger span{position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;}
.burger span::before{top:-7px;}
.burger span::after{top:7px;}
.burger.is-open span{background:transparent;}
.burger.is-open span::before{transform:translateY(7px) rotate(45deg);}
.burger.is-open span::after{transform:translateY(-7px) rotate(-45deg);}
@media (min-width:1024px){.burger{display:none;}}

/* Menu mobile : enfant direct body */
.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 32px;
  display:flex;
  flex-direction:column;
  gap:14px;
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:transform .38s var(--ease),opacity .38s var(--ease),visibility 0s linear .38s;
}
.menu-mobile.is-open{
  transform:translateY(0);
  opacity:1;
  visibility:visible;
  transition:transform .38s var(--ease),opacity .38s var(--ease);
}
.menu-mobile a{
  font-family:var(--ff-display);
  font-size:1.5rem;
  color:var(--text);
  text-decoration:none;
  padding:10px 0;
  border-bottom:1px solid var(--border);
}
.menu-mobile a:last-of-type{border-bottom:0;}
.menu-mobile .menu-cta-wrap{display:flex;flex-direction:column;gap:12px;margin-top:14px;}
.menu-mobile a.btn{
  font-family:var(--ff-ui);
  font-size:.95rem;
  border-bottom:0;
  padding:14px 22px;
  text-align:center;
}
.menu-mobile a.btn-primary{
  background:var(--accent);color:#fff;border-color:var(--accent);
}
.menu-mobile a.btn-wa{
  background:var(--wa-green);color:#fff;border-color:var(--wa-green);
}

@media (min-width:1024px){.menu-mobile{display:none;}}

/* ========== SECTIONS ========== */
section{padding:48px 0;}
@media (min-width:768px){section{padding:88px 0;}}

.sec-head{margin-bottom:34px;max-width:760px;}
.sec-head--center{margin:0 auto 34px;text-align:center;}
.sec-head h2{margin-bottom:.4em;}
.sec-head h2 em{font-style:italic;color:var(--accent);}
.sec-head p{color:var(--text-2);max-width:60ch;margin:0;}
.sec-head--center p{margin-left:auto;margin-right:auto;}

/* ========== FOOTER ========== */
.site-footer{
  background:var(--surface-deep);
  color:var(--text-on-dark);
  padding:56px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:48px;}
}
.footer-col h4{
  font-family:var(--ff-ui);
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.18em;
  color:var(--accent-on-dark);
  margin:0 0 18px;
  font-weight:500;
}
.footer-col p,.footer-col a,.footer-col li{
  color:var(--text-on-dark);
  font-size:.92rem;
}
.footer-col .brand{color:var(--text-on-dark);align-items:flex-start;}
.footer-col .brand-mark{
  background:color-mix(in srgb,var(--accent-on-dark) 16%,transparent);
  color:var(--accent-on-dark);
}
.footer-col .brand-name{color:var(--text-on-dark);font-size:1.3rem;}
.footer-col .brand-name em{color:var(--accent-on-dark);}
.footer-col .brand-tag{color:color-mix(in srgb,var(--text-on-dark) 60%,transparent);}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{text-decoration:none;}
.footer-col a:hover{color:var(--accent-on-dark);}

.footer-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin:8px 0;
  color:var(--text-on-dark);
}
.footer-row svg{flex-shrink:0;color:var(--accent-on-dark);margin-top:3px;}

.footer-bottom{
  margin-top:42px;
  padding-top:22px;
  border-top:1px solid var(--border-on-dark);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:14px;
  font-size:.82rem;
  color:color-mix(in srgb,var(--text-on-dark) 65%,transparent);
}
.footer-bottom button{
  background:transparent;border:0;cursor:pointer;
  color:color-mix(in srgb,var(--text-on-dark) 80%,transparent);
  font:inherit;
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-bottom button:hover{color:var(--accent-on-dark);}

/* ========== FAB Appeler ========== */
.fab-call{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:var(--z-fab);
  width:54px;height:54px;
  border-radius:50%;
  background:var(--accent);
  color:#fff;
  display:grid;place-items:center;
  box-shadow:var(--shadow-lift);
  text-decoration:none;
  opacity:0;
  transform:translateY(20px);
  transition:opacity .3s,transform .3s,background .2s;
  border:0;cursor:pointer;
}
.fab-call.is-visible{opacity:1;transform:none;}
.fab-call:hover{background:var(--primary);color:#fff;}
@media (min-width:1024px){.fab-call{display:none;}}