@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600;700&family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --color-primary: #32a852; 
    --color-secondary: #2b7a78; 
    --color-accent: #f59e0b;
    --color-text-dark: #2d3748; 
    --color-text-light: #f7fafc;
    --color-background-light: #ffffff; 
    --color-background-medium: #edf2f7; 
    --color-border: #e2e8f0;
    --shadow-light: 0 4px 10px rgba(0,0,0,0.08);
    --shadow-medium: 0 8px 20px rgba(0,0,0,0.15);
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--color-text-dark);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    background-image: url('ressources/baobab.jpg');
    background-size: cover;
    background-position: center bottom;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

.background-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23000000' fill-opacity='0.05' fill-rule='evenodd'%3E%3Ccircle cx='3' cy='3' r='3'/%3E%3Ccircle cx='13' cy='13' r='3'/%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.1;
    pointer-events: none;
    z-index: -1;
}


header {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--color-text-light);
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.8);
    padding: 30px 20px 20px;
    z-index: 10;
}
header h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3.2rem;
    margin: 0;
    letter-spacing: 1.5px;
}
header p {
    font-size: 1.3rem;
    font-weight: 300;
    margin-top: 5px;
}

main {
    width: 90%;
    max-width: 850px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    
    border-radius: 12px;
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    margin: 20px auto;
    display: flex;
    flex-direction: column;
    min-height: 500px;
    z-index: 10;
}
#levels-nav {
    display: flex;
    flex-wrap: nowrap;
    background-color: var(--color-secondary);
    border-radius: 12px 12px 0 0;
    padding: 15px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    box-shadow: var(--shadow-light);
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

#levels-nav::-webkit-scrollbar { display: none; }

.level-btn {
    background-color: var(--color-text-light);
    color: var(--color-secondary);
    border: none;
    padding: 10px 22px;
    margin: 0 8px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    flex-shrink: 0;
    white-space: nowrap;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.level-btn:hover {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.level-btn.locked {
    background-color: #a0aec0;
    color: #edf2f7;
    cursor: not-allowed;
    box-shadow: none;
    font-weight: 500;
}
.level-btn.locked:hover {
    transform: none;
    background-color: #a0aec0;
    color: #edf2f7;
}

#content-area {
    padding: 30px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

#content-title {
    font-family: 'Montserrat', sans-serif;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 15px;
    margin-bottom: 25px;
    font-size: 2rem;
}
#content-body {
    min-height: 150px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.lesson-text, .word-card {
    background: var(--color-background-medium);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 15px;
    font-size: 1.15rem;
    text-align: center;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--color-border);
    width: 90%;
    max-width: 450px;
    transition: transform 0.2s ease;
}
.word-card p { margin: 5px 0; }
.word-card p:first-child { font-size: 1.8rem; font-weight: 700; color: var(--color-primary); }
.word-card p:last-child { font-size: 1.2rem; color: var(--color-text-dark); }

.lesson-text:hover, .word-card:hover {
    transform: translateY(-5px);
}


#lesson-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 30px;
}

.lesson-nav-btn {
    border: none;
    padding: 14px 30px;
    font-size: 1.05rem;
    border-radius: 8px;
    cursor: pointer;
    flex: 1;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-light);
}

.btn-primary { background-color: var(--color-primary); color: white; }
.btn-primary:hover { background-color: #278d43; transform: translateY(-2px); box-shadow: var(--shadow-medium); }

.btn-secondary {
    background-color: var(--color-border);
    color: var(--color-text-dark);
}
.btn-secondary:hover { background-color: #cbd5e0; transform: translateY(-2px); box-shadow: var(--shadow-medium); }

.btn-main-action {
    background-color: var(--color-accent);
    color: white;
}
.btn-main-action:hover { background-color: #d6890c; transform: translateY(-2px); box-shadow: var(--shadow-medium); }


.quiz-question {
    width: 100%; 
    box-sizing: border-box; 
    background: var(--color-background-light);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-light);
    text-align: center;
}
.quiz-question p strong { color: var(--color-primary); }

.quiz-options button {
    box-sizing: border-box;
    display: block;
    width: 100%;
    padding: 14px;
    margin-top: 10px;
    border: 1px solid var(--color-border);
    background-color: var(--color-background-light);
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.quiz-options button:hover {
    background-color: var(--color-background-medium);
    border-color: var(--color-secondary);
    transform: translateX(5px);
}
.quiz-options button[style*="background-color: rgb(46, 204, 113)"] {
    background-color: var(--color-primary) !important;
    color: white !important;
    font-weight: 600;
    border-color: var(--color-primary) !important;
}
.quiz-options button[style*="background-color: rgb(231, 76, 60)"] {
    background-color: #e74c3c !important;
    color: white !important;
    font-weight: 600;
    border-color: #e74c3c !important;
}

#quiz-feedback {
    width: 100%; 
    box-sizing: border-box; 
    margin-top: 25px;
    padding: 15px;
    border-radius: 8px;
    font-weight: 700;
    text-align: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-light);
}
.feedback-correct { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.feedback-incorrect { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }

.action-btn {
    background-color: var(--color-accent);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    display: block;
    width: fit-content;
    margin: 30px auto 0;
    font-weight: 700;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-medium);
}
.action-btn:hover {
    background-color: #d6890c;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
    header h1 { font-size: 2.5rem; }
    header p { font-size: 1rem; }
    main { width: 95%; margin: 15px auto; }
    #content-area { padding: 20px; }
    #content-title { font-size: 1.7rem; }
    .lesson-nav-btn { font-size: 0.95rem; padding: 12px 20px; }
    .lesson-text, .word-card { font-size: 1rem; padding: 15px; }
    .word-card p:first-child { font-size: 1.5rem; }
    .word-card p:last-child { font-size: 1rem; }
    .level-btn { margin: 0 4px; padding: 8px 15px; font-size: 0.85rem; }
    #lesson-navigation { gap: 10px; }
}

@media (max-width: 480px) {
    header h1 { font-size: 2rem; }
    header p { font-size: 0.9rem; }
    #levels-nav { padding: 10px 5px; }
    .level-btn { margin: 0 2px; padding: 6px 10px; font-size: 0.8rem; border-radius: 20px; }
    #content-area { padding: 15px; }
    #content-title { font-size: 1.5rem; margin-bottom: 15px; }
    .lesson-text, .word-card { font-size: 0.9rem; padding: 10px; width: 100%; }
    .word-card p:first-child { font-size: 1.3rem; }
    .word-card p:last-child { font-size: 0.9rem; }
    #lesson-navigation { flex-direction: column; gap: 10px; }
    .lesson-nav-btn { width: 100%; font-size: 0.95rem; }
    .action-btn { font-size: 1.05rem; padding: 12px 25px; }
}

/* --- STYLES POUR LE JEU DE CONSTRUCTION DE PHRASES --- */

.sentence-question-container {
    width: 100%;
    max-width: 600px; /* Limite la largeur pour une meilleure lisibilité */
    margin: 0 auto; /* Centre le conteneur */
    text-align: center;
}

.sentence-prompt {
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 500;
}
.sentence-prompt strong {
    font-weight: 700;
    color: var(--color-secondary);
}

.answer-area {
    background-color: var(--color-background-medium);
    border: 2px dashed var(--color-border);
    border-radius: 8px;
    min-height: 60px;
    padding: 10px;
    margin-bottom: 25px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    transition: border-color 0.3s ease;
}

.word-bank {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 25px;
}

.word-tag {
    background-color: white;
    color: var(--color-text-dark);
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: 500;
    box-shadow: var(--shadow-light);
    transition: all 0.2s ease;
}

.word-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.word-tag.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.sentence-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* Styles pour la validation */
.answer-area.correct {
    border-color: var(--color-primary);
    background-color: #d4edda;
}
.answer-area.incorrect {
    border-color: #e74c3c;
    background-color: #f8d7da;
}