/* === EN-TÊTE D'AUTHENTIFICATION === */
.auth-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-base) 0;
}

.auth-header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-base);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.auth-brand {
  flex-shrink: 0;
}

.auth-logo-link {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.auth-logo-link:hover {
  transform: scale(1.02);
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.auth-logo-image {
  height: 40px;
  width: auto;
  transition: var(--transition);
}

.auth-logo-text {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--primary-color);
}

/* === SÉLECTEUR DE LANGUE D'AUTHENTIFICATION === */
.auth-language {
  flex-shrink: 0;
}

.auth-language .language-selector-wrapper {
  position: relative;
}

.auth-language .language-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  background: white;
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: var(--transition);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-color);
}

.auth-language .language-toggle:hover {
  background: var(--secondary-color);
  border-color: var(--accent-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.auth-language .current-flag,
.auth-language .flag-icon {
  width: 20px;
  height: 15px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.auth-language .current-lang {
  font-weight: 600;
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-language .dropdown-arrow {
  font-size: var(--font-xs);
  transition: var(--transition);
  opacity: 0.7;
}

.auth-language .language-toggle[aria-expanded="true"] .dropdown-arrow {
  transform: rotate(180deg);
}

.auth-language .language-dropdown {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  right: 0;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-sm);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  z-index: 1100;
}

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

.auth-language .language-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  color: var(--text-color);
  border-radius: var(--radius-base);
  transition: var(--transition);
  font-size: var(--font-sm);
}

.auth-language .language-option:hover {
  background: var(--secondary-color);
  color: var(--primary-color);
  transform: translateX(2px);
}

.auth-language .language-name {
  font-weight: 500;
}

/* === LAYOUT DE LA PAGE D'AUTHENTIFICATION === */
.auth-page {
  padding-top: 70px; /* Espace pour l'en-tête fixe */
  min-height: 100vh;
}

/* === STYLES POUR LES PAGES D'AUTHENTIFICATION === */
.auth-visual {
  display: none; /* Masqué pour la version simple */
}

.auth-content {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.auth-card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--border-color);
}

/* === STYLES POUR LES FORMULAIRES D'AUTHENTIFICATION === */
.auth-form {
  width: 100%;
}

.auth-form .form-group {
  margin-bottom: var(--spacing-lg);
}

.auth-form .form-label {
  display: block;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.auth-form .form-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-base);
  font-size: var(--font-base);
  color: var(--text-color);
  background: white;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-base);
  transition: var(--transition);
  outline: none;
}

.auth-form .form-input:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(0, 184, 217, 0.1);
}

.auth-form .form-input::placeholder {
  color: var(--text-color);
  opacity: 0.5;
}

/* === BOUTONS D'AUTHENTIFICATION === */
.auth-form .btn {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-base);
  font-weight: 600;
  border-radius: var(--radius-base);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.auth-form .btn-primary {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.auth-form .btn-primary:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
}

.auth-form .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* === WRAPPER D'INPUT AVEC ICÔNE === */
.auth-form .input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.auth-form .input-icon {
  position: absolute;
  left: var(--spacing-md);
  font-size: var(--font-lg);
  color: var(--text-color);
  opacity: 0.5;
  z-index: 2;
  pointer-events: none;
}

.auth-form .input-wrapper .form-input {
  padding-left: var(--spacing-3xl);
}

/* === TOGGLE DE MOT DE PASSE === */
.auth-form .password-toggle {
  position: absolute;
  right: var(--spacing-md);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  color: var(--text-color);
  opacity: 0.7;
  font-size: var(--font-base);
  z-index: 2;
}

.auth-form .password-toggle:hover {
  background: var(--secondary-color);
  opacity: 1;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .auth-header {
    padding: var(--spacing-sm) 0;
  }
  
  .auth-header-container {
    padding: 0 var(--spacing-md);
  }
  
  .auth-logo-image {
    height: 32px;
  }
  
  .auth-logo-text {
    font-size: var(--font-base);
  }
  
  .auth-language .current-lang {
    display: none;
  }
  
  .auth-page {
    padding-top: 60px;
  }
}

@media (max-width: 480px) {
  .auth-header-container {
    padding: 0 var(--spacing-base);
  }
  
  .auth-logo-image {
    height: 28px;
  }
  
  .auth-logo-text {
    font-size: var(--font-sm);
  }
  
  .auth-language .language-dropdown {
    position: fixed;
    top: 60px;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    width: calc(100% - var(--spacing-xl));
    max-width: 300px;
    right: auto;
  }
  
  .auth-language .language-dropdown.show {
    transform: translateX(-50%) translateY(0);
  }
  
  .auth-page {
    padding-top: 50px;
  }
  
  .auth-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-base);
    margin: 0 var(--spacing-sm);
  }
}

/* === TRANSITIONS ET ANIMATIONS === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-card {
  animation: fadeIn 0.5s ease-out;
}

/* === ÉTATS DE CHARGEMENT === */
.auth-form .btn.loading {
  position: relative;
  pointer-events: none;
}

.auth-form .btn.loading .btn-text {
  opacity: 0;
}

.auth-form .btn-loader {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
  display: none;
}

.auth-form .btn.loading .btn-loader {
  display: block;
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* === OPTIMISATIONS DE PERFORMANCE === */
.auth-language .language-dropdown {
  contain: layout style paint;
  will-change: transform, opacity;
}