/* ============================================
   SAMSAKTI — Navbar
   Desktop + Mobile (hamburger overlay)
   ============================================ */

/* --- Header / Navbar --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--transition-medium),
              padding var(--transition-medium),
              box-shadow var(--transition-medium);
}

.header--scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.6rem 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--container-width);
  margin-inline: auto;
}

/* --- Logo --- */
.header__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 1001;
}

.header__logo-img {
  height: 40px;
  width: auto;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

/* --- Navigation desktop --- */
.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  font-family: var(--font-accent);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 0.5rem 1rem;
  color: var(--color-text-secondary);
  position: relative;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-accent-gradient);
  transition: width var(--transition-medium), left var(--transition-medium);
  border-radius: 1px;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 60%;
  left: 20%;
}

/* --- Bouton CTA navbar --- */
.nav__cta {
  margin-left: 1rem;
  position: relative;
  overflow: hidden;
}

/* Shimmer périodique sur les CTA Inscription */
.nav__cta::after,
.mobile-menu__cta::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 100%
  );
  animation: ctaShimmer 3s ease-in-out infinite;
  animation-delay: 2s;
}

.mobile-menu__cta {
  position: relative;
  overflow: hidden;
}

@keyframes ctaShimmer {
  0%, 100% {
    left: -100%;
  }
  40%, 60% {
    left: 120%;
  }
}

/* --- Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  z-index: 1001;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-medium),
              opacity var(--transition-fast);
  transform-origin: center;
}

/* Hamburger animé → X */
.hamburger--active .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger--active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger--active .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Menu mobile overlay --- */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.98);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-medium),
              visibility var(--transition-medium);
}

.mobile-menu--open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__link {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast),
              transform var(--transition-medium);
  opacity: 0;
  transform: translateY(20px);
}

.mobile-menu--open .mobile-menu__link {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation pour les liens mobile */
.mobile-menu--open .mobile-menu__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu--open .mobile-menu__link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu--open .mobile-menu__link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu--open .mobile-menu__link:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu--open .mobile-menu__link:nth-child(5) { transition-delay: 0.3s; }
.mobile-menu--open .mobile-menu__link:nth-child(6) { transition-delay: 0.35s; }
.mobile-menu--open .mobile-menu__link:nth-child(7) { transition-delay: 0.4s; }

.mobile-menu__link:hover,
.mobile-menu__link--active {
  color: var(--color-accent-gold);
}

.mobile-menu__cta {
  margin-top: 1rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-medium),
              transform var(--transition-medium);
}

.mobile-menu--open .mobile-menu__cta {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.45s;
}

/* --- Accessibilité : réduire les animations navbar --- */
@media (prefers-reduced-motion: reduce) {
  .nav__cta::after,
  .mobile-menu__cta::after {
    animation: none;
  }
}

/* --- Mobile / Tablette : afficher hamburger, masquer nav desktop --- */
/* Breakpoint à 1024px pour éviter la superposition logo / liens */
@media (max-width: 1024px) {
  .nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}