:root {
    --main-bg: #f8f9fa;
}
body {
    padding-top: 70px; /* Espace pour la navbar fixe */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--main-bg);
}
main {
    flex: 1;
}
.navbar-brand {
    font-weight: bold;
    letter-spacing: 1px;
}
.chapter-card {
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.chapter-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
    background-color: #fff;
}
.footer {
    background-color: #343a40;
    color: white;
    padding: 20px 0;
    margin-top: 50px;
}
#explanation-section {
    display: none;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
pre {
    border-radius: 8px;
    margin: 20px 0;
}

.alinea {
    text-indent: 30px; /* Ajuste la valeur selon tes goûts */
    text-align: justify; /* Optionnel, mais rend l'alinéa plus esthétique */
}