/* ==========================================================================
   WalliSend Navigation Component
   Header sticky responsive avec menu burger mobile
   ========================================================================== */

/* ===== HEADER ===== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-sm) 0;
  transition: background-color var(--transition-smooth),
              box-shadow var(--transition-smooth);
}

.header--transparent {
  background-color: transparent;
}

.header--solid {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ===== LOGO ===== */

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

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

.header__logo-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
}

/* ===== NAVIGATION DESKTOP ===== */

.nav {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-smooth),
              opacity var(--transition-smooth);
  opacity: 0.9;
}

.nav__link:hover {
  opacity: 1;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.nav__link--active {
  opacity: 1;
  background-color: rgba(255, 255, 255, 0.15);
}

/* ===== CTA HEADER ===== */

.header__cta {
  display: none; /* Caché par défaut sur mobile */
}

/* ===== MENU BURGER ===== */

.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  background: transparent;
  cursor: pointer;
  z-index: calc(var(--z-modal) + 1);
}

.burger__line {
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-smooth),
              opacity var(--transition-smooth);
}

.burger__line:nth-child(1) {
  transform: translateY(-6px);
}

.burger__line:nth-child(3) {
  transform: translateY(6px);
}

/* Burger actif (X) */
.burger--active .burger__line:nth-child(1) {
  transform: translateY(0) rotate(45deg);
}

.burger--active .burger__line:nth-child(2) {
  opacity: 0;
}

.burger--active .burger__line:nth-child(3) {
  transform: translateY(0) rotate(-45deg);
}

/* ===== MENU MOBILE OVERLAY ===== */

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-primary-dark);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-smooth),
              visibility var(--transition-smooth);
}

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

/* Close button in mobile menu */
.mobile-menu__close {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  cursor: pointer;
  z-index: calc(var(--z-modal) + 1);
  padding: var(--space-xs);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-smooth);
}

.mobile-menu__close:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.mobile-menu__close svg {
  width: 28px;
  height: 28px;
  color: var(--color-white);
  stroke-width: 2.5;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.mobile-menu__link {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  padding: var(--space-sm) var(--space-md);
  transition: opacity var(--transition-smooth);
}

.mobile-menu__link:hover {
  opacity: 0.8;
  color: var(--color-white);
}

.mobile-menu__cta {
  margin-top: var(--space-lg);
}

/* ===== TABLET & DESKTOP ===== */

@media (min-width: 768px) {
  .header__logo-img {
    height: 48px;
  }
}

@media (min-width: 1024px) {
  .burger {
    display: none;
  }

  .nav {
    display: block;
  }

  .header__cta {
    display: block;
  }

  .mobile-menu {
    display: none;
  }
}