/* ============================================================
   Avrile — Navbar Inv
   Toutes pages : fond transparent → fond blanc slide-in au scroll.
   Pages avec hero : liens blancs initiaux → noirs quand le fond arrive.
   Pages sans hero : liens noirs dès le départ.
   Home uniquement : logo FLIP hero → navbar.
   Toutes pages : se masque en scrollant bas, réapparaît en montant.
   ============================================================ */

/* ----------------------------------------------------------
   Wrapper fixe
---------------------------------------------------------- */
.avr-nav-inv {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--avr-z-nav);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: clamp(16px, 2.4vh, 26px) var(--avr-space-gutter);
  background: transparent;
  pointer-events: none;
  width: 100%;
  transition: transform 0.35s ease;
}

.avr-nav-inv .avr-nav-inv__logo-link,
.avr-nav-inv .avr-nav-inv__link,
.avr-nav-inv .avr-nav-inv__trigger {
  pointer-events: auto;
  color: var(--avr-fg);
  transition: color 0.4s ease;
}

/* ----------------------------------------------------------
   Hide on scroll down
---------------------------------------------------------- */
.avr-nav-inv.is-scrolled-away {
  transform: translateY(-100%);
}

/* ----------------------------------------------------------
   Logo link
---------------------------------------------------------- */
.avr-nav-inv .avr-nav-inv__logo-link {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  transform-origin: 50% 50%;
}

.avr-nav-inv .avr-nav-inv__logo-svg {
  display: block;
  height: 32px;
  width: auto;
}

/* ----------------------------------------------------------
   Desktop links
---------------------------------------------------------- */
.avr-nav-inv .avr-nav-inv__links {
  display: flex;
  flex-direction: row;
  align-items: center;
}

.avr-nav-inv .avr-nav-inv__link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-family: var(--avr-font-body);
  font-size: var(--avr-text-lead);
  font-weight: var(--avr-weight-regular);
  letter-spacing: var(--avr-tracking-neg);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.avr-nav-inv .avr-nav-inv__link:hover {
  opacity: 0.55;
}

/* ----------------------------------------------------------
   Trigger — burger, masqué sur desktop
---------------------------------------------------------- */
.avr-nav-inv .avr-nav-inv__trigger {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  padding: 0;
  flex-shrink: 0;
}

.avr-nav-inv .avr-nav-inv__bars,
.avr-nav-inv .avr-nav-inv__x {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 22px;
  height: 16px;
  position: relative;
}

.avr-nav-inv .avr-nav-inv__x {
  display: none;
}

.avr-nav-inv.is-open .avr-nav-inv__bars { display: none; }
.avr-nav-inv.is-open .avr-nav-inv__x    { display: inline-flex; }

.avr-nav-inv .avr-nav-inv__bars i {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
}

.avr-nav-inv .avr-nav-inv__x i {
  position: absolute;
  top: 50%;
  left: 0;
  width: 22px;
  height: 2px;
  background: currentColor;
  transform-origin: center;
}

.avr-nav-inv .avr-nav-inv__x i:nth-child(1) { transform: translateY(-50%) rotate(45deg); }
.avr-nav-inv .avr-nav-inv__x i:nth-child(2) { transform: translateY(-50%) rotate(-45deg); }

/* ----------------------------------------------------------
   Dropdown — couche indépendante
---------------------------------------------------------- */
.avr-nav-inv__dropdown {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: calc(var(--avr-z-nav) - 1);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding: clamp(64px, 10vh, 84px) var(--avr-space-gutter) 32px;
  background: color-mix(in oklab, var(--avr-bg) 92%, transparent);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  backdrop-filter: blur(24px) saturate(1.2);
  border-bottom: 1px solid var(--avr-rule);
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.35s var(--avr-ease-reveal);
  width: 100%;
}

.avr-nav-inv__dropdown.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.avr-nav-inv__dropdown nav {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.avr-nav-inv__dropdown-link {
  font-family: var(--avr-font-body);
  font-size: var(--avr-text-menu);
  font-weight: var(--avr-weight-regular);
  letter-spacing: var(--avr-tracking-neg);
  color: var(--avr-fg);
  text-decoration: none;
  padding: 4px 0;
  transition: color 0.2s ease;
}

.avr-nav-inv__dropdown-link:hover {
  color: var(--avr-accent);
}

/* ----------------------------------------------------------
   Fond slide-in — élément dédié, z-index négatif
   Part au-dessus du viewport sur toutes les pages, descend au scroll.
---------------------------------------------------------- */
.avr-nav-inv__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--avr-bg);
  transform: translateY(-100%);
  transition: transform 0.4s ease;
}

.avr-nav-inv.is-visible .avr-nav-inv__bg {
  transform: translateY(0);
}

/* ----------------------------------------------------------
   Pages avec hero (.has-hero ajouté par JS) + home
   Liens blancs initiaux, passent en fg quand le fond arrive.
   Home uniquement : logo FLIP hero → navbar (géré en JS).
---------------------------------------------------------- */
.home .avr-hero__logo {
  visibility: hidden;
}

.has-hero .avr-nav-inv .avr-nav-inv__logo-link,
.has-hero .avr-nav-inv .avr-nav-inv__link,
.has-hero .avr-nav-inv .avr-nav-inv__trigger {
  color: white;
}

.avr-nav-inv.is-visible .avr-nav-inv__logo-link,
.avr-nav-inv.is-visible .avr-nav-inv__link,
.avr-nav-inv.is-visible .avr-nav-inv__trigger {
  color: var(--avr-fg);
}

.has-hero .avr-nav-inv.is-open .avr-nav-inv__logo-link,
.has-hero .avr-nav-inv.is-open .avr-nav-inv__trigger {
  color: var(--avr-fg);
}

/* ----------------------------------------------------------
   Responsive
---------------------------------------------------------- */
@media (max-width: 760px) {
  .avr-nav-inv .avr-nav-inv__links {
    display: none;
  }

  .avr-nav-inv .avr-nav-inv__trigger {
    display: inline-flex;
  }
}