/* Header sticky */
.site-header{
  position:sticky;
  top:0;
  z-index:var(--z-header);
  background:color-mix(in srgb,var(--bg) 92%,transparent);
  backdrop-filter:saturate(160%) blur(8px);
  -webkit-backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),background var(--t);
}
.site-header.is-scrolled{
  border-bottom-color:var(--border);
  background:color-mix(in srgb,var(--bg) 96%,transparent);
}
.header-inner{
  height:var(--header-h-mobile);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0 20px;
  max-width:var(--container);
  margin:0 auto;
}
@media (min-width:768px){
  .header-inner{height:var(--header-h);padding:0 32px;}
}

/* Brand (logo) */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:var(--text);
  min-width:0;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:50%;
  background:color-mix(in srgb,var(--accent) 12%,var(--bg));
  color:var(--accent);
  display:grid;
  place-items:center;
  padding:7px;
  flex-shrink:0;
}
.brand-mark svg{width:100%;height:100%;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.05;min-width:0;}
.brand-name{font-family:var(--ff-display);font-weight:500;font-size:1.15rem;letter-spacing:-.005em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-name em{font-style:italic;color:var(--accent);}
.brand-tag{font-family:var(--ff-ui);font-size:.66rem;text-transform:uppercase;letter-spacing:.14em;color:var(--text-mute);margin-top:2px;}
@media (max-width:520px){.brand-tag{display:none;}}

/* Nav desktop */
.nav-desktop{display:none;}
@media (min-width:920px){
  .nav-desktop{display:flex;align-items:center;gap:28px;}
  .nav-desktop a{
    font-family:var(--ff-ui);
    font-size:.95rem;
    color:var(--text-2);
    text-decoration:none;
    transition:color var(--t-fast);
  }
  .nav-desktop a:hover{color:var(--accent);}
}

.header-cta-wrap{display:flex;align-items:center;gap:10px;}
.btn.header-cta{display:none;}
@media (min-width:920px){
  .btn.header-cta{display:inline-flex;}
}

/* Burger */
.burger{
  position:fixed;
  top:10px;
  right:14px;
  width:44px;
  height:44px;
  display:grid;
  place-items:center;
  background:color-mix(in srgb,var(--bg) 85%,transparent);
  backdrop-filter:blur(6px);
  border-radius:50%;
  z-index:var(--z-burger);
}
.burger span,
.burger span::before,
.burger span::after{
  content:"";
  display:block;
  width:22px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform var(--t),top var(--t),opacity var(--t-fast);
}
.burger span{position:relative;}
.burger span::before{position:absolute;top:-7px;left:0;}
.burger span::after{position:absolute;top:7px;left:0;}
.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:920px){.burger{display:none;}}

/* Menu mobile - enfant direct de body, juste apres header */
.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) 28px 36px;
  display:flex;
  flex-direction:column;
  gap:6px;
  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:not(.btn){
  font-family:var(--ff-display);
  font-size:1.7rem;
  color:var(--text);
  text-decoration:none;
  padding:14px 0;
  border-bottom:1px solid var(--border);
}
.menu-mobile a:not(.btn):hover{color:var(--accent);}
.menu-mobile-cta{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:auto;
  padding-top:24px;
}
.menu-mobile-cta .btn{width:100%;}
@media (min-width:920px){.menu-mobile{display:none;}}

/* Footer */
.site-footer{
  background:var(--surface-deep);
  color:var(--text-on-dark);
  padding:48px 0 24px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
.footer-brand .brand-name{color:var(--text-on-dark);}
.footer-brand .brand-name em{color:var(--accent-soft);}
.footer-brand p{color:var(--text-on-dark-2);max-width:38ch;font-size:.95rem;margin-top:16px;}
.footer-col h4{
  font-family:var(--ff-ui);
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent-soft);
  margin-bottom:14px;
  font-weight:600;
}
.footer-col ul li{padding:4px 0;color:var(--text-on-dark-2);font-size:.95rem;}
.footer-col a{color:var(--text-on-dark-2);}
.footer-col a:hover{color:var(--text-on-dark);}
.footer-bottom{
  border-top:1px solid var(--border-on-dark);
  margin-top:36px;
  padding-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:.82rem;
  color:var(--text-on-dark-2);
}
.footer-bottom button{
  font-size:.82rem;
  color:var(--text-on-dark-2);
  text-decoration:underline;
  background:none;
  padding:0;
}

/* FAB mobile */
.fab{
  position:fixed;
  bottom:18px;
  right:18px;
  width:56px;
  height:56px;
  border-radius:50%;
  background:var(--accent);
  color:#fff;
  display:grid;
  place-items:center;
  z-index:var(--z-fab);
  box-shadow:0 8px 22px rgba(31,91,78,0.34);
  opacity:0;
  transform:translateY(20px);
  transition:opacity .3s,transform .3s;
  pointer-events:none;
  text-decoration:none;
}
.fab.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.fab svg{width:24px;height:24px;}
@media (min-width:920px){.fab{display:none;}}