/* ============================================
   DIAGNOCTIC - STYLES DU QUIZ
   ============================================ */

.diagnostic-container {
    --diagnostic-primary: #6366f1;
    --diagnostic-secondary: #818cf8;
    --diagnostic-bg: #ffffff;
    --diagnostic-text: #1f2937;
    --diagnostic-radius: 12px;

    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    max-width: 600px;
    margin: 0 auto;
    padding: 30px;
    background: var(--diagnostic-bg);
    border-radius: var(--diagnostic-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* ============================================
   BARRE DE PROGRESSION
   ============================================ */

.diagnostic-progress {
    margin-bottom: 30px;
}

.diagnostic-progress-bar {
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
}

.diagnostic-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--diagnostic-primary), var(--diagnostic-secondary));
    border-radius: 4px;
    transition: width 0.4s ease;
    width: 0%;
}

.diagnostic-progress-text {
    text-align: center;
    margin-top: 10px;
    font-size: 14px;
    color: #6b7280;
}

.diagnostic-current {
    font-weight: 600;
    color: var(--diagnostic-primary);
}

/* ============================================
   QUESTIONS
   ============================================ */

.diagnostic-questions {
    min-height: 280px;
    position: relative;
}

.diagnostic-question {
    opacity: 1;
    transition: opacity 0.25s ease-in-out;
}

.diagnostic-question.fade-out {
    opacity: 0;
}

.diagnostic-question.fade-in {
    opacity: 0;
}

.diagnostic-question.fade-in.active {
    opacity: 1;
}

.diagnostic-question-text {
    font-size: 22px;
    font-weight: 600;
    color: var(--diagnostic-text);
    margin: 0 0 25px 0;
    line-height: 1.4;
    text-align: center;
}

/* ============================================
   RÉPONSES
   ============================================ */

.diagnostic-answers {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.diagnostic-answer {
    width: 100%;
    padding: 16px 20px;
    background: #f9fafb;
    border: 2px solid #e5e7eb;
    border-radius: var(--diagnostic-radius);
    font-size: 16px;
    color: var(--diagnostic-text);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.diagnostic-answer:hover {
    border-color: var(--diagnostic-secondary);
    background: #f3f4f6;
    transform: translateY(-2px);
}

.diagnostic-answer.selected {
    border-color: var(--diagnostic-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(129, 140, 248, 0.1));
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.diagnostic-answer:focus {
    outline: none;
    border-color: var(--diagnostic-primary);
}

/* ============================================
   NAVIGATION
   ============================================ */

.diagnostic-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    gap: 15px;
}

.diagnostic-btn {
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: var(--diagnostic-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.diagnostic-btn-prev {
    background: #f3f4f6;
    color: #6b7280;
}

.diagnostic-btn-prev:hover {
    background: #e5e7eb;
    color: var(--diagnostic-text);
}

.diagnostic-btn-next {
    background: linear-gradient(135deg, var(--diagnostic-primary), var(--diagnostic-secondary));
    color: white;
    flex: 1;
    max-width: 200px;
    margin-left: auto;
}

.diagnostic-btn-next:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

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

/* ============================================
   ÉCRAN DE CHARGEMENT
   ============================================ */

.diagnostic-loading {
    text-align: center;
    padding: 60px 20px;
}

.diagnostic-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e5e7eb;
    border-top-color: var(--diagnostic-primary);
    border-radius: 50%;
    margin: 0 auto 20px;
    animation: spin 1s linear infinite;
}

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

.diagnostic-loading p {
    font-size: 18px;
    color: var(--diagnostic-text);
    margin: 0;
}

/* ============================================
   ÉCRAN D'EXPLICATION
   ============================================ */

.diagnostic-explanation {
    text-align: center;
    padding: 40px 20px;
    animation: fadeInExplanation 0.3s ease;
}

@keyframes fadeInExplanation {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.diagnostic-explanation-content {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(129, 140, 248, 0.08));
    border: 2px solid var(--diagnostic-primary);
    border-radius: var(--diagnostic-radius);
    padding: 30px;
    max-width: 500px;
    margin: 0 auto;
}

.diagnostic-explanation-text {
    font-size: 17px;
    line-height: 1.6;
    color: var(--diagnostic-text);
    margin: 0 0 25px 0;
}

.diagnostic-btn-continue {
    background: linear-gradient(135deg, var(--diagnostic-primary), var(--diagnostic-secondary));
    color: white;
    padding: 14px 40px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: var(--diagnostic-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.diagnostic-btn-continue:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* ============================================
   RESPONSIVE - TABLETTE
   ============================================ */

@media (max-width: 768px) {
    .diagnostic-container {
        padding: 25px 20px;
        margin: 0 15px;
        border-radius: 16px;
    }

    .diagnostic-question-text {
        font-size: 20px;
    }

    .diagnostic-answer {
        padding: 14px 18px;
        font-size: 15px;
    }
}

/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */

@media (max-width: 480px) {
    .diagnostic-container {
        padding: 20px 15px;
        margin: 0 10px;
    }

    .diagnostic-question-text {
        font-size: 18px;
        margin-bottom: 20px;
    }

    .diagnostic-answers {
        gap: 10px;
    }

    .diagnostic-answer {
        padding: 14px 16px;
        font-size: 14px;
    }

    .diagnostic-navigation {
        flex-direction: column-reverse;
        gap: 10px;
    }

    .diagnostic-btn {
        width: 100%;
        padding: 14px 20px;
    }

    .diagnostic-btn-next {
        max-width: 100%;
        margin-left: 0;
    }

    .diagnostic-btn-prev {
        visibility: visible !important;
    }
}

/* ============================================
   ANIMATIONS SUPPLÉMENTAIRES
   ============================================ */

/* Animation simple et compatible tous mobiles */