/* ===================================================
   FRACTIONS STANDALONE — styles/fractions_standalone.css
   Le Monde des Curieux | Mars 2026
   Couleur principale : #F57C00 (orange fractions)
   =================================================== */

:root {
    --frac-primary:   #F57C00;
    --frac-dark:      #E65100;
    --frac-light:     #FFF3E0;
    --frac-accent:    #FFB300;
    --frac-quiz:      #6A1B9A;
    --frac-success:   #2E7D32;
    --frac-error:     #C62828;
}

[x-cloak] { display: none !important; }

/* === LAYOUT === */
.fractions-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}

/* === HEADER === */
.section-header {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.back-btn {
    background: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}

.back-btn:hover { transform: translateY(-2px); }

.back-btn-home {
    background: #FFF3E0;
    color: var(--frac-dark);
}

/* === TITRE === */
.section-title {
    text-align: center;
    color: white;
    margin-bottom: 28px;
}

.section-title h1 {
    font-family: 'Press Start 2P', cursive;
    font-size: 2em;
    margin: 0 0 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.section-title p {
    font-size: 1.1em;
    margin: 0;
}

/* === NAVIGATION CHAPITRES === */
.chapters-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 24px;
}

.chapter-btn {
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.95rem;
    background: white;
    color: #333;
    transition: all 0.25s;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.chapter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.18);
    background: var(--frac-light);
}

.chapter-btn.active {
    background: var(--frac-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(245,124,0,0.4);
    transform: scale(1.04);
}

/* === CONTENU CHAPITRE === */
.chapter-content {
    margin-bottom: 24px;
}

.chapter-card {
    background: white;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    border-top: 4px solid var(--frac-primary);
}

.chapter-card h2 {
    font-size: 1.5em;
    color: var(--frac-dark);
    margin: 0 0 20px;
}

/* === CONTENU PÉDAGOGIQUE === */
.lesson-section {
    margin-bottom: 1.6rem;
}

.lesson-section p {
    line-height: 1.8;
    color: #333;
    margin-bottom: 12px;
}

.lesson-section h3 {
    font-size: 1.15rem;
    color: white;
    background: var(--frac-primary);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    margin: 1.4rem 0 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lesson-section ul {
    background: var(--frac-light);
    padding: 1.2rem 1.2rem 1.2rem 2.2rem;
    border-radius: 8px;
    border-left: 4px solid var(--frac-accent);
    margin: 0.8rem 0;
}

.lesson-section li {
    margin-bottom: 0.6rem;
    line-height: 1.7;
}

.example-box {
    background: #FFF8E1;
    border: 2px solid var(--frac-accent);
    border-radius: 10px;
    padding: 1rem 1.4rem;
    margin: 0.8rem 0;
    font-size: 1.05rem;
}

.example-box p { margin-bottom: 0.5rem; }
.example-box p:last-child { margin-bottom: 0; }

/* === FRACTION VISUELLE (intro) === */
.fraction-visual {
    display: flex;
    gap: 30px;
    align-items: center;
    flex-wrap: wrap;
    background: var(--frac-light);
    padding: 1.2rem;
    border-radius: 10px;
    margin: 1rem 0;
}

.fraction-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: 'Press Start 2P', cursive;
    font-size: 1.4rem;
    color: var(--frac-dark);
    line-height: 1.6;
}

.fraction-bar { font-size: 1.8rem; }

.fraction-labels {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 0.9rem;
    color: #555;
}

/* === GRILLE FRACTIONS USUELLES === */
.fractions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
    margin: 1rem 0;
}

.fraction-card {
    background: var(--frac-light);
    border: 2px solid var(--frac-accent);
    border-radius: 10px;
    padding: 14px;
    text-align: center;
    font-size: 1rem;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.fraction-card strong {
    font-size: 1.2rem;
    color: var(--frac-dark);
}

.fraction-card em {
    color: var(--frac-quiz);
    font-style: normal;
    font-weight: bold;
}

.decimaux-grid .fraction-card {
    font-size: 0.95rem;
}

/* === COOLDOWN === */
.cooldown-info {
    background: #FFF3E0;
    border: 2px solid var(--frac-accent);
    border-radius: 10px;
    padding: 14px 20px;
    text-align: center;
    color: #555;
    margin-top: 12px;
}

/* === BOUTONS D'ACTION === */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-top: 20px;
}

.action-btn {
    padding: 14px 28px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: bold;
    transition: all 0.25s;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.action-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.15);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-quiz {
    background: linear-gradient(135deg, var(--frac-quiz), #4A148C);
    color: white;
}

.btn-mini-quiz {
    background: linear-gradient(135deg, var(--frac-primary), var(--frac-dark));
    color: white;
}

.btn-back {
    background: linear-gradient(135deg, #546E7A, #37474F);
    color: white;
}

.btn-dashboard {
    background: linear-gradient(135deg, #1565C0, #0D47A1);
    color: white;
}

/* === QUIZ CONTAINER === */
.quiz-container {
    max-width: 800px;
    margin: 0 auto 30px;
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.quiz-standalone { border-top: 4px solid var(--frac-quiz); }
.quiz-mini       { border-top: 4px solid var(--frac-primary); }

.quiz-header h2 {
    font-size: 1.4rem;
    color: #333;
    margin: 0 0 16px;
}

/* Progress bar */
.progress-bar {
    background: #E0E0E0;
    border-radius: 10px;
    height: 16px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    background: linear-gradient(90deg, var(--frac-primary), var(--frac-quiz));
    height: 100%;
    transition: width 0.4s ease;
}

/* Question */
.question-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin: 20px 0 16px;
    line-height: 1.5;
}

.answer-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.answer-btn {
    padding: 14px;
    border: 2px solid #E0E0E0;
    border-radius: 10px;
    background: white;
    cursor: pointer;
    text-align: left;
    font-size: 1.05rem;
    transition: all 0.25s;
}

.answer-btn:hover:not(:disabled) {
    border-color: var(--frac-primary);
    background: var(--frac-light);
    transform: translateX(5px);
}

.answer-btn.correct {
    border-color: var(--frac-success);
    background: #E8F5E9;
    color: var(--frac-success);
    font-weight: bold;
}

.answer-btn.incorrect {
    border-color: var(--frac-error);
    background: #FFEBEE;
    color: var(--frac-error);
}

.answer-btn:disabled { cursor: not-allowed; }

/* Feedback */
.feedback-zone { margin-top: 12px; }

.feedback {
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: bold;
    margin-bottom: 8px;
}

.feedback.correct {
    background: #E8F5E9;
    color: var(--frac-success);
    border: 2px solid var(--frac-success);
}

.feedback.incorrect {
    background: #FFEBEE;
    color: var(--frac-error);
    border: 2px solid var(--frac-error);
}

.feedback-explanation {
    background: #FFF8E1;
    border-left: 4px solid var(--frac-accent);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.95rem;
    color: #555;
    line-height: 1.6;
}

/* Résultats */
.results-zone { text-align: center; padding: 20px 0; }
.results-zone h3 { font-size: 1.8rem; color: #333; margin-bottom: 20px; }

.score-display { margin-bottom: 24px; }

.score-circle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: linear-gradient(135deg, var(--frac-primary), var(--frac-quiz));
    border-radius: 50%;
    width: 120px;
    height: 120px;
    justify-content: center;
    color: white;
    margin-bottom: 16px;
    box-shadow: 0 6px 20px rgba(245,124,0,0.3);
}

.score-number { font-size: 2.4rem; font-weight: bold; line-height: 1; }
.score-total  { font-size: 1.1rem; }

.score-message {
    font-size: 1.2rem;
    color: #555;
    margin: 10px 0 20px;
}

.results-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* Bulle Curio */
.curio-bubble {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    max-width: 300px;
    z-index: 1000;
}
.curio-close {
    position: absolute;
    top: 10px; right: 10px;
    background: none; border: none;
    font-size: 24px; cursor: pointer; color: #999;
}
.curio-avatar { font-size: 2.5em; text-align: center; margin-bottom: 8px; }
.curio-message { color: #333; line-height: 1.6; margin: 0; font-size: 0.9rem; }
.curio-bubble.success { border-left: 4px solid var(--frac-success); }
.curio-bubble.error   { border-left: 4px solid var(--frac-error); }
.curio-bubble.info    { border-left: 4px solid #2196F3; }

/* Lien skip-link WCAG */
.skip-link {
    position: absolute;
    top: -40px; left: 0;
    background: var(--frac-primary);
    color: white;
    padding: 8px 16px;
    z-index: 9999;
    border-radius: 0 0 8px 0;
    transition: top 0.3s;
}
.skip-link:focus { top: 0; }

/* Screen reader */
.sr-announce {
    position: absolute;
    width: 1px; height: 1px;
    margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .section-title h1 { font-size: 1.4em; }
    .chapter-card { padding: 20px; }
    .chapters-nav { flex-direction: column; }
    .chapter-btn { width: 100%; text-align: center; }
    .action-buttons { flex-direction: column; }
    .action-btn { width: 100%; }
    .fraction-visual { flex-direction: column; }
    .fractions-grid { grid-template-columns: repeat(2, 1fr); }
}