/* ============================================
   HEADER & NAVIGATION
============================================ */

.main-header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  gap: var(--space-4);
}

/* Logo */
.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.project-name {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  line-height: 1;
}

.project-slogan {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  line-height: 1;
}

/* Navigation */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--bg-hover);
  color: var(--color-primary);
}

.nav-item.active .nav-link {
  background: rgba(78, 115, 223, 0.1);
  color: var(--color-primary);
}

.nav-icon {
  font-size: var(--text-base);
}

/* Badge notification */
.badge-notification {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--color-danger);
  color: var(--color-white);
  border-radius: var(--radius-full);
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: var(--font-bold);
}

/* User Section */
.header-user-section {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.btn-notification,
.btn-user {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.btn-notification:hover,
.btn-user:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-600);
  font-weight: var(--font-semibold);
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Dropdown */
.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 200px;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  padding: var(--space-1);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--color-primary);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-light);
  margin: var(--space-2) 0;
}

/* Mobile Menu */
.mobile-menu-button {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
}

/* Responsive */
@media (max-width: 768px) {
  .header-container {
    padding: var(--space-2) var(--space-3);
  }

  .project-slogan {
    display: none;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    padding: var(--space-3);
  }

  .main-nav.show {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    gap: var(--space-1);
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
  }

  .mobile-menu-button {
    display: flex;
  }

  .nav-text {
    display: inline;
  }
}

/* Boutons de connexion */
.login-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-login {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.btn-login-admin {
  background: linear-gradient(135deg, #e74a3b, #c0392b);
  color: white;
}

.btn-login-admin:hover {
  background: linear-gradient(135deg, #c0392b, #a93226);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(231, 74, 59, 0.4);
}

.btn-login-medecin {
  background: linear-gradient(135deg, #3498db, #2980b9);
  color: white;
}

.btn-login-medecin:hover {
  background: linear-gradient(135deg, #2980b9, #21618c);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

/* Amélioration du menu utilisateur */
.btn-user {
  gap: var(--space-2);
  width: auto;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
}

.user-name {
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  color: var(--text-primary);
  white-space: nowrap;
}

.dropdown-header {
  padding: var(--space-3);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.dropdown-header strong {
  color: var(--text-primary);
  font-size: var(--text-base);
}

.dropdown-header small {
  color: var(--text-secondary);
  font-size: var(--text-xs);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.dropdown-header small i {
  color: var(--color-warning);
}

@media (max-width: 1024px) {
  .nav-text {
    display: none;
  }

  .nav-link {
    padding: var(--space-2);
  }

  .header-container {
    gap: var(--space-2);
  }

  .user-name {
    display: none;
  }

  .btn-login span {
    display: none;
  }

  .btn-login {
    padding: var(--space-2);
    min-width: 40px;
    justify-content: center;
  }
}