/* ============================================================
   ONG FAMM — header.css | Header fixe + Navigation + Burger
   ============================================================ */

/* ── Header principal ── */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  box-shadow: 0 2px 20px rgba(0,0,0,0.25);
  transition: all 0.3s ease;
}

/* État scrollé */
#site-header.header--scrolled {
  background: #fff;
  box-shadow: 0 2px 16px rgba(26,58,124,0.10);
}

#site-header.header--scrolled .nav-link {
  color: var(--text);
}

#site-header.header--scrolled .nav-link:hover,
#site-header.header--scrolled .nav-link.active {
  color: var(--primary);
}

#site-header.header--scrolled .logo-tagline {
  color: var(--text-muted);
}

/* État transparent (hero) */
#site-header:not(.header--scrolled) .nav-link {
  color: rgba(255,255,255,0.9);
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

#site-header:not(.header--scrolled) .nav-link:hover,
#site-header:not(.header--scrolled) .nav-link.active {
  color: var(--white);
}

#site-header:not(.header--scrolled) .logo-tagline {
  color: rgba(255,255,255,0.7);
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

/* ── Header inner ── */
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  gap: var(--spacing-xl);
}

/* ── Logo ── */
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  flex-shrink: 0;
}

.header-logo img {
  height: 56px;
  width: auto;
  display: block;
  transition: transform var(--transition);
}

.header-logo:hover img { transform: scale(1.04); }

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  transition: color var(--transition), text-shadow var(--transition);
}

#site-header.header--scrolled .logo-name { 
  color: var(--primary); 
  text-shadow: none;
}

.logo-tagline {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1;
  transition: color var(--transition);
}

/* ── Navigation principale ── */
#main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
}

.nav-link .chevron {
  font-size: 0.7rem;
  transition: transform var(--transition);
}

.nav-item:hover .nav-link .chevron,
.nav-item.open .nav-link .chevron {
  transform: rotate(180deg);
}

#site-header:not(.header--scrolled) .nav-link:hover {
  background: rgba(255,255,255,0.12);
}

#site-header.header--scrolled .nav-link:hover {
  background: var(--bg-card);
}

/* Bouton Contact (pill accent) */
.nav-link-contact {
  background: var(--accent) !important;
  color: var(--white) !important;
  border-radius: var(--radius-full) !important;
  padding: 0.5rem 1.25rem !important;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition) !important;
}

.nav-link-contact:hover {
  background: var(--accent-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(232,88,12,0.4) !important;
  color: var(--white) !important;
}

/* ── Dropdown ── */
.dropdown {
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 240px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 100;
  overflow: hidden;
}

.dropdown::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: var(--white);
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  transform: translateX(-50%) rotate(45deg);
}

.nav-item:hover .dropdown,
.nav-item.open .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-header {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.625rem var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text) !important;
  transition: background var(--transition), color var(--transition), padding var(--transition);
  border-bottom: 1px solid rgba(216,232,245,0.5);
  text-decoration: none;
}

.dropdown-link:last-child { border-bottom: none; }

.dropdown-link i {
  width: 16px;
  text-align: center;
  color: var(--secondary);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.dropdown-link:hover {
  background: var(--bg-card);
  color: var(--primary) !important;
  padding-left: calc(var(--spacing-md) + 4px);
}

.dropdown-link:hover i { color: var(--accent); }

/* ── Burger button ── */
#burger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 10px;
  border-radius: 8px;
  cursor: pointer;
  background-color: #1A3A7C !important;
  border: none;
  z-index: 1001;
  transition: background-color 0.3s ease;
}

#burger-btn:hover {
  background-color: #132c63 !important;
}

.burger-line {
  display: block;
  width: 24px;
  height: 2.5px;
  background: #ffffff !important;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), width var(--transition);
  transform-origin: center;
}

/* Animation burger → croix */
#burger-btn.open .burger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#burger-btn.open .burger-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
#burger-btn.open .burger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile Overlay Menu ── */
#mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--primary);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: calc(var(--header-h) + var(--spacing-xl)) var(--spacing-xl) var(--spacing-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateX(100%);
  transition: opacity 0.35s ease, visibility 0.35s ease, transform 0.35s ease;
  overflow-y: auto;
}

#mobile-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* Fond décoratif mobile menu */
#mobile-menu::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  pointer-events: none;
}

.mobile-nav-section {
  margin-bottom: var(--spacing-xl);
  animation: slideInRight 0.4s ease both;
}

.mobile-nav-section:nth-child(2) { animation-delay: 0.05s; }
.mobile-nav-section:nth-child(3) { animation-delay: 0.10s; }
.mobile-nav-section:nth-child(4) { animation-delay: 0.15s; }
.mobile-nav-section:nth-child(5) { animation-delay: 0.20s; }
.mobile-nav-section:nth-child(6) { animation-delay: 0.25s; }

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

.mobile-nav-main-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  cursor: pointer;
  text-decoration: none;
}

.mobile-nav-main-link .chevron {
  font-size: 0.875rem;
  transition: transform var(--transition);
}

.mobile-nav-section.expanded .mobile-nav-main-link .chevron {
  transform: rotate(180deg);
}

.mobile-sub-links {
  display: none;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-md) 0 var(--spacing-sm) var(--spacing-md);
}

.mobile-nav-section.expanded .mobile-sub-links { display: flex; }

.mobile-sub-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255,255,255,0.75);
  padding: var(--spacing-xs) 0;
  text-decoration: none;
  transition: color var(--transition);
}

.mobile-sub-link i {
  width: 18px;
  text-align: center;
  color: var(--secondary);
  font-size: 0.875rem;
}

.mobile-sub-link:hover { color: var(--white); }

.mobile-contact-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  background: var(--accent);
  color: var(--white);
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  padding: 1rem var(--spacing-xl);
  border-radius: var(--radius-full);
  text-decoration: none;
  margin-top: var(--spacing-lg);
  transition: background var(--transition), transform var(--transition);
}

.mobile-contact-btn:hover {
  background: var(--accent-dark);
  color: var(--white);
  transform: translateY(-2px);
}

.mobile-menu-footer {
  margin-top: auto;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mobile-menu-contact-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
}

.mobile-menu-contact-info i { color: var(--secondary); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .header-inner { padding: 0 var(--spacing-md); }
  .nav-link { font-size: 0.85rem; padding: 0.5rem 0.625rem; }
}

@media (max-width: 768px) {
  #main-nav  { display: none; }
  #burger-btn { display: flex; }
  .logo-text { display: none; }
}

@media (max-width: 480px) {
  .header-logo img { height: 44px; }
}