/* ==========================================================================
   LCDH13 — Layout: header, nav, footer, mobile action bar
   ========================================================================== */

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(247, 242, 236, 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-block: var(--space-4);
}

.site-header__logo { display: flex; align-items: center; }
.site-header__logo img { height: 32px; width: auto; }

.site-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
}

.site-nav a {
  position: relative;
  padding-block: var(--space-1);
  color: var(--ink-soft);
  transition: color var(--duration-fast) var(--ease-out);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1.5px;
  background: var(--accent-dark);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out);
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }

.site-header__cta { display: flex; align-items: center; gap: var(--space-3); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px; height: 40px;
  position: relative;
}
/* Three lines: the middle one is the <span>, top/bottom are the button's
   own ::before/::after — all sized against the 40px button box (a line
   nested as span::before/::after would instead size against the span's
   own already-narrowed 22px box, collapsing to ~4px). */
.menu-toggle span, .menu-toggle::before, .menu-toggle::after {
  content: "";
  position: absolute;
  left: 9px; right: 9px;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-fast) var(--ease-out);
}
.menu-toggle span { top: 19px; }
.menu-toggle::before { top: 12px; }
.menu-toggle::after { top: 26px; }
.menu-toggle[aria-expanded="true"] span { opacity: 0; }
.menu-toggle[aria-expanded="true"]::before { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"]::after { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  top: 0;
  background: var(--paper);
  z-index: 99;
  padding: var(--space-10) var(--container-pad) var(--space-6);
  overflow-y: auto;
}
.mobile-menu.is-open { display: block; }
.mobile-menu ul { display: flex; flex-direction: column; gap: var(--space-5); }
.mobile-menu a { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--ink); }
.mobile-menu__cta { margin-top: var(--space-8); display: flex; flex-direction: column; gap: var(--space-3); }

@media (max-width: 900px) {
  .site-nav, .site-header__cta { display: none; }
  .menu-toggle { display: block; }
}

/* ---- Footer ---- */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-ink-soft);
  padding-top: var(--space-9);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--footer-line);
}

.footer-brand img { height: 30px; margin-bottom: var(--space-4); }
.footer-brand p { max-width: 32ch; font-size: var(--text-sm); }

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--footer-ink);
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); font-size: var(--text-sm); }
.footer-col a:hover { color: var(--footer-ink); }

.footer-trust { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--footer-ink);
  background: rgba(247, 242, 236, 0.06);
  border: 1px solid var(--footer-line);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  width: fit-content;
}
.footer-badge svg { width: 14px; height: 14px; color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-5);
  font-size: var(--text-xs);
  flex-wrap: wrap;
}
.footer-bottom nav { display: flex; gap: var(--space-5); }
.footer-bottom a:hover { color: var(--footer-ink); }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---- Floating mobile action bar ---- */
.mobile-action-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 90;
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom));
  background: var(--surface);
  border-top: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  gap: var(--space-3);
}
.mobile-action-bar a {
  flex: 1;
  text-align: center;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
}
.mobile-action-bar__call { background: var(--paper-alt); color: var(--ink); }
.mobile-action-bar__devis { background: var(--accent-dark); color: var(--paper); }

@media (max-width: 900px) {
  .mobile-action-bar { display: flex; }
  body { padding-bottom: 76px; }
}