/* header sticky */
.site-header {
  position: sticky; top: 0;
  z-index: var(--z-header);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--border);
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  box-shadow: 0 2px 24px -16px rgba(35, 39, 31, 0.18);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h-mobile);
  gap: 20px;
}
@media (min-width: 768px) { .header-inner { height: var(--header-h); } }

.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brand-mark {
  width: 36px; height: 36px; flex-shrink: 0;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--bg));
  border-radius: 50%; padding: 7px;
  display: grid; place-items: center;
}
.brand-mark svg { width: 100%; height: auto; display: block; }
.brand-name {
  font-family: var(--ff-display); font-weight: 600;
  font-size: 1.32rem; line-height: 1; letter-spacing: -0.015em;
}
.brand-name em {
  font-style: italic; color: var(--accent-2); font-weight: 500;
}

/* nav desktop */
.nav-main { display: none; align-items: center; gap: 32px; }
.nav-main a {
  color: var(--text); font-size: 0.93rem; font-weight: 500;
  position: relative; padding: 4px 0; text-decoration: none;
}
.nav-main a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 1.5px; background: var(--accent);
  transition: width var(--dur) var(--ease);
}
.nav-main a:hover { color: var(--accent); }
.nav-main a:hover::after { width: 100%; }
@media (min-width: 900px) { .nav-main { display: inline-flex; } }

.header-cta {
  display: none; align-items: center; gap: 10px;
}
@media (min-width: 900px) { .header-cta { display: inline-flex; } }

/* burger (mobile only) - fixed haut a DROITE, enfant body */
.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: calc(var(--z-header) + 10);
  color: var(--text);
}
.burger span,
.burger span::before,
.burger span::after {
  display: block; width: 24px; height: 2px; background: currentColor; 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: 900px) { .burger { display: none; } }

/* menu mobile (enfant DIRECT du body, fixed full-screen) */
.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: 8px;
  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: 1.6rem; color: var(--text);
  padding: 14px 0; border-bottom: 1px solid var(--border);
  text-decoration: none;
}
.menu-mobile > a.btn,
.menu-mobile > a.btn-wa,
.menu-mobile > a.btn-call {
  font-family: var(--ff-ui); font-size: 1rem;
  margin-top: 20px; border: 0; border-radius: var(--r-md);
  padding: 16px 18px; text-align: center; color: #fff;
}
.menu-mobile > a.btn-wa { background: var(--wa-green); }
.menu-mobile > a.btn-call { background: var(--accent); }
@media (min-width: 900px) { .menu-mobile { display: none; } }

/* footer */
.site-footer {
  background: var(--primary);
  color: color-mix(in srgb, #fff 78%, transparent);
  padding: 56px 0 32px;
  margin-top: 0;
}
.site-footer h3, .site-footer h4 { color: #fff; font-family: var(--ff-display); font-size: 1.05rem; margin-bottom: 14px; }
.site-footer a { color: color-mix(in srgb, #fff 80%, transparent); }
.site-footer a:hover { color: var(--accent-2); }
.footer-grid { display: grid; gap: 32px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-mark { background: rgba(255,255,255,0.08); color: var(--accent-2); }
.footer-tagline { margin-top: 14px; color: color-mix(in srgb, #fff 70%, transparent); font-size: 0.93rem; max-width: 30ch; }
.footer-list li { margin-bottom: 8px; font-size: 0.93rem; }
.footer-bottom {
  margin-top: 40px; padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; flex-direction: column; gap: 10px;
  font-size: 0.83rem; color: color-mix(in srgb, #fff 60%, transparent);
}
@media (min-width: 700px) { .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; } }
.footer-ml-link {
  background: transparent; border: 0; color: inherit; text-decoration: underline;
  text-underline-offset: 4px; padding: 0; cursor: pointer; font-size: inherit;
}

/* FAB mobile */
.fab-call {
  position: fixed; right: 16px; bottom: 16px; z-index: calc(var(--z-header) - 1);
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--accent); color: #fff; display: grid; place-items: center;
  box-shadow: 0 8px 24px -6px rgba(35,39,31,0.4);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.fab-call:hover { transform: translateY(-2px); background: var(--accent-2); color: #fff; }
.fab-call svg { width: 24px; height: 24px; }
@media (min-width: 900px) { .fab-call { display: none; } }