.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-light);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.nav--scrolled { box-shadow: var(--shadow-md); }

.nav__inner {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav__logo img { height: 36px; width: auto; }

/* ── Actions à droite (landing pré-lancement : lien Blog + CTA, sans hamburger) ── */
.nav__actions {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
}
.nav__link {
  font-weight: 500;
  color: var(--color-blue);
  transition: color var(--transition);
}
.nav__link:hover,
.nav__link[aria-current="page"] { color: var(--color-green); }
@media (max-width: 480px) {
  .nav__actions { gap: var(--space-sm); }
}

/* ── Liens desktop ── */
.nav__links {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}
.nav__links > li { position: relative; }

.nav__links a {
  font-weight: 500;
  color: var(--color-blue);
  transition: color var(--transition);
}
.nav__links a:hover,
.nav__links a[aria-current="page"] { color: var(--color-green); }

/* CTA "Demander un diagnostic" */
.nav__cta {
  background: var(--color-green) !important;
  color: var(--color-white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}
.nav__cta:hover {
  background: var(--color-green-dark) !important;
  transform: translateY(-1px);
}

/* ── Hamburger (mobile) ── */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-blue);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── Dropdown ── */
.nav__dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-main);
  font-size: var(--text-body);
  font-weight: 500;
  color: var(--color-blue);
  cursor: pointer;
  padding: 0;
  transition: color var(--transition);
  white-space: nowrap;
}
.nav__dropdown-toggle:hover { color: var(--color-green); }

.nav__chevron {
  font-size: 0.7rem;
  display: inline-block;
  transition: transform var(--transition);
}

/* Menu caché par défaut */
.nav__dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 260px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 12px 0 0.5rem;
  z-index: 200;
  list-style: none;
}

/* ── Desktop : survol CSS pur ── */
@media (min-width: 769px) {
  .nav__dropdown:hover > .nav__dropdown-menu {
    display: block;
  }
  .nav__dropdown:hover .nav__chevron {
    transform: rotate(180deg);
  }
}

.nav__dropdown-menu li a {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-dark);
  transition: background var(--transition), color var(--transition);
}
.nav__dropdown-menu li a:hover {
  background: var(--color-blue-pastel);
  color: var(--color-blue);
}
.nav__dropdown-menu li a[aria-current="page"] {
  color: var(--color-green);
  font-weight: 600;
}
.nav__dropdown-menu li:first-child a {
  color: var(--color-blue);
  font-weight: 600;
}
.nav__dropdown-menu li:first-child a:hover { background: var(--color-blue-pastel); }

.nav__dropdown-divider {
  height: 1px;
  background: var(--color-gray-light);
  margin: 0.25rem 0;
}

.nav__dropdown-label {
  padding: 0.5rem 1.25rem 0.2rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-mid);
  pointer-events: none;
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .nav__toggle { display: flex; }

  .nav__links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-gray-light);
    box-shadow: var(--shadow-md);
    gap: var(--space-sm);
  }
  .nav__links.is-open { display: flex; }

  /* Dropdown mobile : inline, déclenché par clic JS */
  .nav__dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-blue-pastel);
    border-radius: 0;
    padding: 0;
    margin-left: var(--space-sm);
    min-width: unset;
    width: 100%;
  }
  .nav__dropdown.is-open > .nav__dropdown-menu { display: block; }
  .nav__dropdown.is-open .nav__chevron { transform: rotate(180deg); }

  .nav__dropdown-menu li a { padding: 0.5rem 0.75rem; }
  .nav__dropdown-divider { display: none; }
}