/* ================================================================
   NAV.CSS — Navigation principale
   Supporte 2 templates HTML (button trigger / link trigger)
   ================================================================ */

/* ── Header ─────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider, var(--color-border));
  transition: box-shadow var(--transition-interactive);
}
.site-header--scrolled { box-shadow: var(--shadow-sm); }

/* ── Layout interne ─────────────────────────────────────────────── */
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-8);
}

/* ── Logo ───────────────────────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo-img {
  height: 44px;
  width: auto;
  max-width: 260px;
  object-fit: contain;
  display: block;
}
/* Rétrocompatibilité texte logo */
.nav-logo-name,
.nav-logo > span:first-child {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.02em;
}
.nav-logo-sub,
.nav-logo-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ── Menu principal ─────────────────────────────────────────────── */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-item { position: relative; }

/* Liens et boutons de nav — unification */
.nav-link {
  display: block;
  padding: var(--space-2) var(--space-2);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  white-space: nowrap;
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  /* Reset button */
  -webkit-appearance: none;
  appearance: none;
}
.nav-link:hover,
.nav-link.active,
.nav-link.nav-link--active {
  color: var(--color-text);
  background: var(--color-surface-2, rgba(0,0,0,0.04));
}
.nav-link--muted { opacity: 0.45; }

/* Chevron dans les triggers dropdown */
.nav-chevron {
  font-size: 0.65em;
  margin-left: 3px;
  opacity: 0.6;
  display: inline-block;
  transition: transform 200ms ease;
}
.nav-item--has-dropdown.open .nav-chevron { transform: rotate(180deg); }

/* ── Dropdown ───────────────────────────────────────────────────── */
.nav-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 210px;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-2);
  list-style: none;
  /* Caché par défaut */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  z-index: 200;
}

/* Ouverture au hover (desktop) */
.nav-item--has-dropdown:hover > .nav-dropdown,
.nav-item--has-dropdown:focus-within > .nav-dropdown {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
  visibility: visible;
}

/* Ouverture via JS (.open) */
.nav-item--has-dropdown.open > .nav-dropdown {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
  visibility: visible;
}

/* ── Liens dans le dropdown — supporte 2 structures ──
   Template A : <li><a class="nav-dropdown-link" href="...">
   Template B : <li class="nav-dropdown-item"><a href="...">
   ─────────────────────────────────────────────────────── */
.nav-dropdown-link,
.nav-dropdown-item > a {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.nav-dropdown-link:hover,
.nav-dropdown-item > a:hover,
.nav-dropdown-link.nav-dropdown-link--active,
.nav-dropdown-link--active {
  color: var(--color-text);
  background: var(--color-surface-2, rgba(0,0,0,0.04));
}

/* ── Contrôles (thème + CTA + burger) ──────────────────────────── */
.nav-actions,
.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.nav-cta {
  font-size: 0.68rem;
  padding: var(--space-2) var(--space-4);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  white-space: nowrap;
}

/* Theme toggle — supporte #theme-toggle et [data-theme-toggle] */
.theme-toggle,
[data-theme-toggle] {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: transparent;
  cursor: pointer;
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
}
.theme-toggle:hover,
[data-theme-toggle]:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

/* Burger — supporte .nav-burger, #burger, .burger */
.nav-burger,
#burger,
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-md);
  background: none;
  border: none;
  padding: 0;
}
.nav-burger span,
#burger span,
.burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform 200ms ease, opacity 200ms ease;
}
.nav-burger.open span:nth-child(1),
#burger.open span:nth-child(1),
.burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2),
#burger.open span:nth-child(2),
.burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3),
#burger.open span:nth-child(3),
.burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Mobile ≤ 900px ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-menu { display: none; }

  .nav-burger,
  #burger,
  .burger { display: flex; }

  /* Menu déroulant plein écran */
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    padding: var(--space-8) var(--space-6);
    gap: var(--space-2);
    overflow-y: auto;
    z-index: 99;
  }

  .nav-link {
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-4);
    width: 100%;
  }

  /* Dropdowns en mobile : statiques, cachés par défaut */
  .nav-dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    background: var(--color-surface-2, rgba(0,0,0,0.04));
    border-radius: var(--radius-md);
    margin-left: var(--space-4);
    margin-top: var(--space-1);
    padding: var(--space-1) 0;
    display: none;
  }

  /* Overrides hover sur mobile (tout passe par JS .open) */
  .nav-item--has-dropdown:hover > .nav-dropdown,
  .nav-item--has-dropdown:focus-within > .nav-dropdown {
    display: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .nav-item--has-dropdown.open > .nav-dropdown {
    display: block;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  /* Masquer le CTA nav sur mobile */
  .nav-cta { display: none; }
}