/* ============================================================
   nav.css — Navigation principale & menu mobile
   ============================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  height: 68px;
  background: rgba(250, 250, 248, 0.93);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gris-5);
  transition: box-shadow var(--trans);
}
.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 48px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

/* ── Logo ────────────────────────────────────────────────── */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--encre);
  flex-shrink: 0;
}
.nav__logo-mark {
  width: 38px;
  height: 38px;
  background: var(--encre);
  color: var(--blanc);
  font-family: var(--font-titre);
  font-weight: 800;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--trans);
}
.nav__logo:hover .nav__logo-mark {
  background: var(--rouge);
}
.nav__logo-name {
  font-family: var(--font-titre);
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0.02em;
}

/* ── Liens desktop ───────────────────────────────────────── */
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__links a {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--gris-2);
  text-decoration: none;
  transition: color var(--trans);
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 100%; height: 1.5px;
  background: var(--rouge);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--trans);
}
.nav__links a:hover,
.nav__links a.active {
  color: var(--encre);
}
.nav__links a:hover::after,
.nav__links a.active::after {
  transform: scaleX(1);
}
.nav__links a.active {
  color: var(--encre);
  font-weight: 600;
}

/* Bouton CTA */
.nav__cta {
  background: var(--encre) !important;
  color: var(--blanc) !important;
  padding: 9px 22px;
  border-radius: var(--radius-xs);
  font-weight: 600 !important;
  letter-spacing: 0.05em;
  transition: background var(--trans), transform var(--trans) !important;
}
.nav__cta::after { display: none !important; }
.nav__cta:hover {
  background: var(--rouge) !important;
  transform: translateY(-1px);
}

/* ── Burger (mobile) ─────────────────────────────────────── */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-shrink: 0;
}
.nav__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--encre);
  border-radius: 2px;
  transition: transform var(--trans), opacity var(--trans);
  transform-origin: center;
}
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Menu mobile ─────────────────────────────────────────── */
.nav__mobile {
  position: absolute;
  top: 68px; left: 0; right: 0;
  background: var(--blanc);
  border-bottom: 1px solid var(--gris-5);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  padding: 16px 24px 24px;
  gap: 0;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav__mobile.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}
.nav__mobile a {
  padding: 14px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--encre);
  text-decoration: none;
  border-bottom: 1px solid var(--gris-5);
  transition: color var(--trans);
}
.nav__mobile a:last-child { border-bottom: none; }
.nav__mobile a:hover { color: var(--rouge); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .nav__inner { padding: 0 24px; }
}