/* ============================================
   NAVBAR.CSS — Header + navigation responsive
   ============================================ */

/* --- Topbar --- */
#topbar {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 28px;
}

.topbar-phrase {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-social {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.topbar-social a,
.topbar-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-border);
  transition: color var(--transition);
}

.topbar-social a:hover,
.topbar-social-link:hover {
  color: var(--color-text-muted);
}

.topbar-social svg {
  width: 13px;
  height: 13px;
}

.topbar-social a[aria-label="Facebook"],
.topbar-social-link[aria-label="Facebook"] { color: #1877F2; }

.topbar-social a[aria-label="WhatsApp"],
.topbar-social-link[aria-label="WhatsApp"] { color: #25D366; }

.topbar-social a[aria-label="Facebook"]:hover,
.topbar-social-link[aria-label="Facebook"]:hover { color: #0d6efd; }

.topbar-social a[aria-label="WhatsApp"]:hover,
.topbar-social-link[aria-label="WhatsApp"]:hover { color: #1db954; }

@media (max-width: 600px) {
  #topbar {
    display: none;
  }
}

/* --- Header wrapper --- */
#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

#header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

/* --- Inner layout --- */
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* --- Logo --- */
.header-logo img {
  height: 38px;
  width: auto;
  display: block;
  transition: opacity var(--transition);
}

.header-logo:hover img {
  opacity: 0.85;
}

/* --- Nav desktop --- */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

/* --- Boutons droite --- */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* --- Switcher de langue --- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
}

.lang-switcher button {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-border);
  transition: color var(--transition);
  padding: 0;
}

.lang-switcher button.active {
  color: var(--color-text-muted);
}

.lang-switcher button:hover {
  color: var(--color-text);
}

.lang-sep {
  font-size: var(--text-sm);
  color: var(--color-border);
  user-select: none;
}

/* --- Hamburger (mobile) --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.hamburger:hover {
  background: var(--color-bg-alt);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Animation hamburger → croix */
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

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

/* --- Menu mobile (drawer) --- */
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) var(--container-pad);
  gap: var(--space-xs);

  /* Animation */
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
}

.nav-mobile.open {
  max-height: 500px;
  opacity: 1;
}

.nav-mobile a {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition);
}

.nav-mobile a:last-of-type {
  border-bottom: none;
}

.nav-mobile a:hover {
  color: var(--color-accent);
}

.nav-mobile .mobile-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* --- Responsive breakpoints --- */
@media (max-width: 900px) {
  .nav-desktop {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-mobile {
    display: flex;
  }

  .header-inner {
    height: 52px;
  }

  .header-logo img {
    height: 28px;
  }
}

/* Offset pour le contenu sous le header fixe (topbar 28px + navbar 72px) */
.header-offset {
  height: 100px;
}

@media (max-width: 900px) {
  .header-offset {
    height: 52px;
  }
}

@media (max-width: 600px) {
  .header-offset {
    height: 52px;
  }
}