/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
    /* Couleurs principales */
    --primary-color: #003d5c;
    --secondary-color: #4a90e2;
    --accent-color: #00a8cc;
    --success-color: #28a745;
    --warning-color: #ffc107;
    
    /* Couleurs neutres */
    --text-dark: #1a1a1a;
    --text-light: #6c757d;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --border-color: #e9ecef;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* ============================================
   RESET & BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, #e3f2fd 0%, #f8f9fa 100%);
    min-height: 100vh;
    padding: var(--spacing-md);
}

/* ============================================
   CONTAINER PRINCIPAL
   ============================================ */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: fadeIn 0.5s ease-in;
}

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

/* ============================================
   ÉCRANS (GESTION D'AFFICHAGE)
   ============================================ */
.screen {
    display: none;
    padding: var(--spacing-xl);
    min-height: 500px;
}

.screen.active {
    display: block;
    animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   ÉCRAN D'INTRODUCTION
   ============================================ */
.intro-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.main-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

/* Features Grid */
.intro-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.feature {
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature .icon {
    font-size: 2rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.feature p {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
}

.trust-text {
    margin-top: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-light);
    font-style: italic;
}

/* ============================================
   BOUTONS
   ============================================ */
.btn-primary,
.btn-secondary {
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--primary-color);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.arrow {
    transition: var(--transition);
}

.btn-primary:hover .arrow {
    transform: translateX(5px);
}

/* ============================================
   BARRE DE PROGRESSION
   ============================================ */
.progress-bar-container {
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-light);
    border-radius: 50px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    border-radius: 50px;
    transition: width 0.4s ease;
    box-shadow: 0 0 10px rgba(74, 144, 226, 0.5);
}

.progress-text {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.875rem;
    white-space: nowrap;
}

/* ============================================
   QUESTIONS
   ============================================ */
.question-container {
    margin-bottom: var(--spacing-xl);
}

.question-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    line-height: 1.3;
}

.question-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

/* Options de réponse */
.options-grid {
    display: grid;
    gap: var(--spacing-md);
}

.option-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.option-card:hover {
    border-color: var(--secondary-color);
    background: #f0f8ff;
    transform: translateX(5px);
}

.option-card.selected {
    border-color: var(--secondary-color);
    background: linear-gradient(135deg, #e3f2fd, #f0f8ff);
    box-shadow: var(--shadow-md);
}

.option-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.option-text {
    flex: 1;
}

.option-label {
    font-weight: 600;
    color: var(--text-dark);
    display: block;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.option-description {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ============================================
   NAVIGATION
   ============================================ */
.navigation-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: space-between;
    margin-top: var(--spacing-xl);
}

/* ============================================
   ÉCRAN DE RÉSULTAT
   ============================================ */
.result-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.result-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--success-color), #20c997);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.result-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.result-emoji {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.result-description {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

/* Cards de détails */
.result-details {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.detail-card {
    background: var(--bg-light);
    border-left: 4px solid var(--secondary-color);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.detail-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-card ul {
    list-style: none;
    padding-left: 0;
}

.detail-card li {
    padding: 0.5rem 0;
    color: var(--text-dark);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.detail-card li::before {
    content: "✓";
    color: var(--success-color);
    font-weight: bold;
    flex-shrink: 0;
}

/* Call-to-Actions */
.result-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.result-cta .btn-primary,
.result-cta .btn-secondary {
    width: 100%;
    justify-content: center;
    padding: 1.25rem 2rem;
}

/* Partage social */
.social-share {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.social-share p {
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    font-weight: 600;
}

.social-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-light);
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.25rem;
}

.social-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.social-btn.facebook { background: #1877f2; color: white; }
.social-btn.twitter { background: #1da1f2; color: white; }
.social-btn.linkedin { background: #0a66c2; color: white; }
.social-btn.whatsapp { background: #25d366; color: white; }

/* ============================================
   FOOTER
   ============================================ */
.quiz-footer {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.trust-signals {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    text-align: center;
}

.signal strong {
    display: block;
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.signal span {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }
    
    .screen {
        padding: var(--spacing-md);
    }
    
    .main-title {
        font-size: 1.875rem;
    }
    
    .result-title {
        font-size: 1.75rem;
    }
    
    .question-title {
        font-size: 1.5rem;
    }
    
    .intro-features {
        grid-template-columns: 1fr;
    }
    
    .navigation-buttons {
        flex-direction: column;
    }
    
    .navigation-buttons button {
        width: 100%;
    }
    
    .trust-signals {
        grid-template-columns: 1fr;
    }
    
    .result-emoji {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 1.5rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }
}

/* ============================================
   ANIMATIONS SUPPLÉMENTAIRES
   ============================================ */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.btn-primary:not(:disabled):hover {
    animation: pulse 0.6s ease-in-out;
}

/* Animation pour les cartes d'options */
.option-card {
    animation: fadeInUp 0.3s ease-out backwards;
}

.option-card:nth-child(1) { animation-delay: 0.05s; }
.option-card:nth-child(2) { animation-delay: 0.1s; }
.option-card:nth-child(3) { animation-delay: 0.15s; }
.option-card:nth-child(4) { animation-delay: 0.2s; }

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

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   ACCESSIBILITÉ
   ============================================ */
.option-card:focus,
.btn-primary:focus,
.btn-secondary:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Mode sombre (optionnel) */
@media (prefers-color-scheme: dark) {
    /* Vous pouvez ajouter un thème sombre ici si nécessaire */
}