/* ============================================================
   Header — Barre de navigation principale
   ============================================================ */

.vc-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--vc-header-z);
  height: var(--vc-header-height);
  transition: background-color var(--vc-duration-base) var(--vc-ease),
              box-shadow var(--vc-duration-base) var(--vc-ease),
              height var(--vc-duration-base) var(--vc-ease);
}

/* Header transparent sur le hero */
.vc-header--transparent {
  background-color: transparent;
}

/* Header solide sur les autres pages + après scroll */
.vc-header--solid,
.vc-header.is-scrolled {
  background-color: var(--vc-header-bg);
  box-shadow: 0 1px 0 var(--vc-color-border-soft);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
}

.vc-header.is-scrolled { height: 68px; }

.vc-header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--vc-space-8);
}

/* ─── Logo ────────────────────────────────────────────────── */

.vc-header-brand { flex-shrink: 0; }

.vc-header-logo-link {
  position: relative;
  display: block;
  text-decoration: none;
  line-height: 0;
}

.vc-header-logo {
  height: 46px;
  width: auto;
  object-fit: contain;
  display: block;
  transition: opacity var(--vc-duration-base) var(--vc-ease),
              height var(--vc-duration-base) var(--vc-ease);
}

/* Les deux versions se superposent : on ne fait varier que l'opacité */
.vc-header-logo--light-bg {
  position: absolute;
  inset: 0;
  height: 100%;
}

.vc-header.is-scrolled .vc-header-logo { height: 38px; }

/* Fond transparent (au-dessus du hero) → logo blanc */
.vc-header--transparent:not(.is-scrolled) .vc-header-logo--light-bg { opacity: 0; }
.vc-header--transparent:not(.is-scrolled) .vc-header-logo--dark-bg  { opacity: 1; }

/* Fond clair (header solide ou scrollé) → logo couleur */
.vc-header--solid .vc-header-logo--dark-bg,
.vc-header.is-scrolled .vc-header-logo--dark-bg { opacity: 0; }
.vc-header--solid .vc-header-logo--light-bg,
.vc-header.is-scrolled .vc-header-logo--light-bg { opacity: 1; }

.vc-header-site-name {
  font-family: var(--vc-font-heading);
  font-size: var(--vc-font-size-lg);
  font-weight: 600;
  color: var(--vc-color-ink);
  letter-spacing: var(--vc-tracking-tight);
}
.vc-header--transparent:not(.is-scrolled) .vc-header-site-name { color: var(--vc-on-dark); }

/* ─── Navigation ──────────────────────────────────────────── */

.vc-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

/* ─── Actions ─────────────────────────────────────────────── */

.vc-header-actions {
  display: flex;
  align-items: center;
  gap: var(--vc-space-2);
  flex-shrink: 0;
}

/* ─── Burger ──────────────────────────────────────────────── */

.vc-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--vc-color-border);
  border-radius: var(--vc-radius-full);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: border-color var(--vc-duration-fast) var(--vc-ease);
}
.vc-nav-toggle:hover { border-color: var(--vc-color-primary); }

.vc-burger-line {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--vc-color-ink);
  border-radius: 2px;
  transition: transform var(--vc-duration-base) var(--vc-ease),
              opacity var(--vc-duration-base) var(--vc-ease),
              background-color var(--vc-duration-base) var(--vc-ease);
}

/* Burger sur le hero (fond sombre) */
.vc-header--transparent:not(.is-scrolled) .vc-nav-toggle { border-color: var(--vc-on-dark-border); }
.vc-header--transparent:not(.is-scrolled) .vc-burger-line { background-color: var(--vc-on-dark); }

.vc-nav-toggle[aria-expanded="true"] .vc-burger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.vc-nav-toggle[aria-expanded="true"] .vc-burger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.vc-nav-toggle[aria-expanded="true"] .vc-burger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Menu mobile ouvert : fond clair, burger toujours lisible */
.vc-header.is-nav-open .vc-nav-toggle { border-color: var(--vc-color-border); }
.vc-header.is-nav-open .vc-burger-line { background-color: var(--vc-color-ink); }

/* ─── Responsive ──────────────────────────────────────────── */

@media (max-width: 1100px) {
  .vc-header-actions .vc-btn--ghost { display: none; }
}

@media (max-width: 900px) {
  .vc-nav-toggle { display: flex; }
  .vc-header-actions { display: none; }

  .vc-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--vc-color-bg);
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
    padding: var(--vc-header-height) var(--vc-container-padding) var(--vc-space-10);
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transition: opacity var(--vc-duration-base) var(--vc-ease),
                visibility var(--vc-duration-base);
  }

  .vc-nav.is-open {
    visibility: visible;
    opacity: 1;
  }
}