/* ============================================
   STYLES D'AUTHENTIFICATION - LUAFI.COM
   Design moderne compatible avec l'interface existante
   ============================================ */

/* Variables d'authentification */
:root {
    --auth-primary: var(--primary-cosmic);
    --auth-primary-hover: var(--primary-hover);
    --auth-secondary: var(--accent-aurora);
    --auth-success: var(--emotion-accomplishment);
    --auth-danger: var(--danger-color);
    --auth-warning: var(--highlight-stardust);
    
    --auth-bg: rgba(255, 255, 255, 0.95);
    --auth-bg-dark: rgba(17, 24, 39, 0.95);
    --auth-border: var(--glass-border);
    --auth-shadow: var(--shadow-2xl);
    --auth-backdrop: var(--glass-backdrop-extreme);
    
    --auth-radius: var(--radius-xl);
    --auth-spacing: var(--spacing-lg);
    --auth-transition: var(--transition-normal);
}

/* ============================================
   MODAL D'AUTHENTIFICATION
   ============================================ */

/* Overlay du modal */
.auth-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--auth-transition) cubic-bezier(0.4, 0, 0.2, 1);
    padding: var(--spacing-md);
}

.auth-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Conteneur principal du modal */
.auth-modal {
    background: var(--auth-bg);
    border-radius: var(--auth-radius);
    box-shadow: var(--auth-shadow);
    border: 1px solid var(--auth-border);
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: all var(--auth-transition) cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    backdrop-filter: var(--auth-backdrop);
    -webkit-backdrop-filter: var(--auth-backdrop);
}

.auth-modal-overlay.active .auth-modal {
    transform: scale(1) translateY(0);
}

/* Header du modal */
.auth-modal-header {
    background: linear-gradient(135deg, var(--auth-primary) 0%, var(--auth-secondary) 100%);
    color: white;
    padding: var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.auth-modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.auth-modal:hover .auth-modal-header::before {
    left: 100%;
}

.auth-modal-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin: 0;
    position: relative;
    z-index: 1;
}

.auth-modal-subtitle {
    font-size: var(--text-sm);
    opacity: 0.9;
    margin-top: var(--spacing-xs);
    position: relative;
    z-index: 1;
}

/* Bouton de fermeture */
.auth-modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 20px;
    z-index: 2;
}

.auth-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg) scale(1.1);
}

/* ============================================
   ONGlets DE NAVIGATION
   ============================================ */

.auth-tabs {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.auth-tab:hover {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.05);
}

.auth-tab.active {
    color: var(--auth-primary);
    background: var(--auth-bg);
}

.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--auth-primary), var(--auth-secondary));
    border-radius: 3px 3px 0 0;
}

/* ============================================
   CONTENU DES FORMULAIRES
   ============================================ */

.auth-modal-content {
    padding: var(--spacing-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.auth-form {
    display: none;
    animation: fadeInUp 0.4s ease-out;
}

.auth-form.active {
    display: block;
}

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

/* Groupes de formulaires */
.auth-form-group {
    margin-bottom: var(--spacing-lg);
}

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

.auth-form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.auth-form-input:hover {
    border-color: var(--primary-lighter);
    box-shadow: var(--shadow-md);
}

.auth-form-input:focus {
    outline: none;
    border-color: var(--auth-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    transform: translateY(-1px);
}

.auth-form-input.error {
    border-color: var(--auth-danger);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
}

.auth-form-input.success {
    border-color: var(--auth-success);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
}

/* Messages d'erreur */
.auth-form-error {
    color: var(--auth-danger);
    font-size: var(--text-sm);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.auth-form-error::before {
    content: '⚠️';
    font-size: 14px;
}

/* FIX issue #29 : Cacher les conteneurs d'erreur vides (icônes ⚠️ fantômes)
   Le ::before ne doit s'afficher que si le conteneur contient effectivement un message */
.auth-form-error:empty {
    display: none;
}

/* ============================================
   OPTIONS ET ACTIONS
   ============================================ */

.auth-form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.auth-checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.auth-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--auth-primary);
    cursor: pointer;
}

.auth-checkbox-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.auth-link {
    color: var(--auth-primary);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
}

.auth-link:hover {
    color: var(--auth-primary-hover);
    text-decoration: underline;
}

/* Boutons d'action */
.auth-form-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.auth-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.auth-btn-primary {
    background: linear-gradient(135deg, var(--auth-primary) 0%, var(--auth-primary-hover) 100%);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.35);
}

.auth-btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--auth-primary-hover) 0%, #3730a3 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.45);
}

.auth-btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.auth-btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--auth-primary);
    color: var(--auth-primary);
}

.auth-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Indicateur de chargement */
.auth-btn.loading {
    color: transparent;
    pointer-events: none;
}

.auth-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================================
   INDICATEUR DE SÉCURITÉ DU MOT DE PASSE
   ============================================ */

.password-strength {
    margin-top: var(--spacing-sm);
}

.password-strength-bar {
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.password-strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: all var(--transition-fast);
    width: 0%;
}

.password-strength-fill.weak {
    width: 33%;
    background: var(--auth-danger);
}

.password-strength-fill.medium {
    width: 66%;
    background: var(--auth-warning);
}

.password-strength-fill.strong {
    width: 100%;
    background: var(--auth-success);
}

.password-strength-text {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.password-strength-requirements {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
}

.password-requirement {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    color: var(--text-muted);
}

.password-requirement.met {
    color: var(--auth-success);
}

.password-requirement::before {
    content: '○';
    font-weight: bold;
}

.password-requirement.met::before {
    content: '✓';
    color: var(--auth-success);
}

/* ============================================
   SÉPARATEUR ET OPTIONS SOCIALES
   ============================================ */

.auth-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
    gap: var(--spacing-md);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.auth-divider-text {
    color: var(--text-muted);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.auth-alternative {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.auth-alternative-text {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

/* ============================================
   BOUTON DE CONNEXION DANS LE HEADER
   ============================================ */

.auth-header-btn {
    background: linear-gradient(135deg, var(--auth-primary) 0%, var(--auth-secondary) 100%);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
    position: relative;
    z-index: 10; /* éviter le masquage par les widgets latéraux (Firefox) */
}

.auth-header-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.auth-header-btn svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   MENU UTILISATEUR CONNECTÉ
   ============================================ */

.auth-user-menu {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.auth-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--auth-primary) 0%, var(--auth-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-bold);
    font-size: var(--text-sm);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.auth-user-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.auth-user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.auth-user-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    line-height: 1.2;
}

.auth-user-email {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: 1.2;
}

.auth-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-sm);
    background: var(--auth-bg);
    border: 1px solid var(--auth-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--auth-shadow);
    min-width: 200px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
}

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

.auth-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

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

.auth-dropdown-item.danger {
    color: var(--auth-danger);
}

.auth-dropdown-item.danger:hover {
    background: var(--danger-light);
}

.auth-dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-xs) 0;
}

/* ============================================
   NOTIFICATIONS D'AUTHENTIFICATION
   ============================================ */

.auth-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--auth-bg);
    border: 1px solid var(--auth-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--auth-shadow);
    max-width: 400px;
    z-index: 10000;
    opacity: 0;
    transform: translateX(100%);
    transition: all var(--transition-fast);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
}

.auth-notification.show {
    opacity: 1;
    transform: translateX(0);
}

.auth-notification.success {
    border-left: 4px solid var(--auth-success);
}

.auth-notification.error {
    border-left: 4px solid var(--auth-danger);
}

.auth-notification.warning {
    border-left: 4px solid var(--auth-warning);
}

.auth-notification.info {
    border-left: 4px solid var(--auth-primary);
}

/* ============================================
   MODE SOMbre
   ============================================ */

@media (prefers-color-scheme: dark) {
    :root {
        --auth-bg: var(--auth-bg-dark);
    }
    
    body.dark-mode .auth-modal {
        background: var(--auth-bg-dark);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    body.dark-mode .auth-form-input {
        background: var(--bg-dark);
        color: var(--text-white);
        border-color: rgba(255, 255, 255, 0.2);
    }
    
    body.dark-mode .auth-form-input:focus {
        border-color: var(--auth-primary);
    }
    
    body.dark-mode .auth-dropdown {
        background: var(--bg-dark);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    body.dark-mode .auth-dropdown-item:hover {
        background: rgba(255, 255, 255, 0.1);
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .auth-modal {
        margin: var(--spacing-md);
        max-width: none;
        width: calc(100% - 2rem);
    }
    
    .auth-modal-content {
        padding: var(--spacing-md);
    }
    
    .auth-form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .auth-user-info {
        display: none;
    }
    
    .auth-dropdown {
        right: -50px;
        min-width: 180px;
    }
}

@media (max-width: 480px) {
    .auth-modal-header {
        padding: var(--spacing-md);
    }
    
    .auth-modal-title {
        font-size: var(--text-xl);
    }
    
    .auth-tabs {
        flex-direction: column;
    }
    
    .auth-tab {
        text-align: center;
    }
    
    .auth-form-actions {
        gap: var(--spacing-md);
    }
    
    .auth-btn {
        padding: var(--spacing-lg);
        font-size: var(--text-base);
    }
}

/* ============================================
   ACCESSIBILITÉ
   ============================================ */

.auth-modal-overlay:focus-within {
    outline: 2px solid var(--auth-primary);
    outline-offset: 2px;
}

.auth-form-input:focus-visible,
.auth-btn:focus-visible,
.auth-tab:focus-visible {
    outline: 2px solid var(--auth-primary);
    outline-offset: 2px;
}

/* Support pour le lecteur d'écran */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   ANIMATIONS SPÉCIALES
   ============================================ */

.auth-shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.auth-pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Effet de succès */
.auth-success-checkmark {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--auth-success);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    animation: successBounce 0.6s ease-out;
}

.auth-success-checkmark::after {
    content: '✓';
    color: white;
    font-size: 24px;
    font-weight: bold;
}

@keyframes successBounce {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}