.btn {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: .78rem 1.2rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-weight: 800;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--vert-principal);
  color: var(--blanc);
  box-shadow: 0 12px 30px rgba(77, 110, 80, .26);
}
.btn-primary:hover { background: var(--vert-profond); box-shadow: 0 14px 34px rgba(37, 56, 42, .32); }
.btn-ghost { background: rgba(255,255,255,.72); border-color: rgba(37,56,42,.14); color: var(--vert-profond); }
.btn-ghost:hover { background: var(--blanc); border-color: rgba(37,56,42,.26); }

.cursor-dot,
.cursor-halo {
  position: fixed;
  left: 0;
  top: 0;
  pointer-events: none;
  z-index: 9998;
  border-radius: 50%;
  opacity: 0;
  transform: translate3d(-100px,-100px,0);
}
.cursor-dot {
  width: 7px;
  height: 7px;
  background: var(--vert-profond);
}
.cursor-halo {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(77,110,80,.45);
  transition: width var(--transition-fast), height var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}
body.cursor-ready .cursor-dot,
body.cursor-ready .cursor-halo { opacity: 1; }
body.cursor-link .cursor-halo {
  width: 48px;
  height: 48px;
  border-color: rgba(77,110,80,.7);
  background: rgba(77,110,80,.08);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 80;
  min-height: var(--header-height);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.site-header.is-scrolled {
  background: rgba(243,243,242,.9);
  backdrop-filter: blur(16px);
  border-color: rgba(37,56,42,.08);
  box-shadow: 0 8px 30px rgba(18,24,28,.06);
}
.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand { display: inline-flex; align-items: center; gap: .8rem; min-width: 0; }
.brand picture { flex: 0 0 auto; }
.brand img { width: 3.85rem; height: 3.85rem; object-fit: contain; transition: transform var(--transition); }
.site-header.is-scrolled .brand img { transform: scale(.9); }
.brand-copy { min-width: 0; display: grid; }
.brand-copy strong { font-family: var(--font-display); letter-spacing: .035em; font-size: 1.18rem; }
.brand-copy small { color: var(--gris-texte); font-size: .7rem; white-space: nowrap; }

.main-nav { display: flex; align-items: center; gap: .25rem; }
.main-nav a {
  padding: .7rem .9rem;
  border-radius: var(--radius-pill);
  font-size: .9rem;
  font-weight: 750;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.main-nav a:hover { background: rgba(77,110,80,.1); color: var(--vert-profond); }
.nav-toggle {
  display: none;
  width: 2.8rem;
  height: 2.8rem;
  border: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.7);
  box-shadow: 0 6px 20px rgba(18,24,28,.08);
  cursor: pointer;
}
.nav-toggle span:not(.sr-only) { display: block; width: 1.15rem; height: 2px; margin: 4px auto; background: var(--noir); transition: transform var(--transition-fast), opacity var(--transition-fast); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(4) { transform: translateY(-6px) rotate(-45deg); }

.site-footer { background: var(--noir); color: var(--blanc); padding: var(--space-10) 0; }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: var(--space-8); }
.footer-brand { display: flex; align-items: center; gap: var(--space-4); }
.footer-brand img { width: 5rem; height: 5rem; object-fit: contain; }
.footer-brand strong { font-family: var(--font-display); font-size: 1.35rem; letter-spacing: .04em; }
.footer-brand p, .footer-note { margin: .2rem 0 0; color: rgba(255,255,255,.67); }
.footer-note { text-align: right; }