body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #0f172a; /* Fond sombre de sécurité */
    color: #f8fafc;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* En-tête de contrôle */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background-color: #1e293b;
    border-bottom: 2px solid #3b82f6; /* Ligne de signal bleue */
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #3b82f6;
    letter-spacing: 1px;
}

#statut-liaison {
    font-size: 14px;
    color: #64748b;
    background-color: #0f172a;
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid #334155;
    transition: all 0.5s ease;
}

/* Zone centrale d'activation */
main {
    flex: 1;
    padding: 40px 5%;
}

.contenant-centre {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-bottom: 40px;
    padding: 40px;
    background: #1e293b;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

/* Bouton Souverain BENEFIT ACTIVATE */
#btn-benefit-activate {
    background-color: #10b981; /* Vert d'activation */
    color: white;
    font-size: 18px;
    font-weight: bold;
    padding: 15px 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
}

/* État verrouillé (Article 8 de la charte) */
#btn-benefit-activate:disabled {
    background-color: #475569;
    color: #94a3b8;
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
}

#message-alignement {
    margin-top: 15px;
    font-size: 14px;
    color: #94a3b8;
    font-style: italic;
}

/* Grille pour l'injection dynamique du contenu */
.grille-dynamique {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

/* Style des cartes de formation (Structure Universelle) */
.carte {
    background: #1e293b;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #334155;
    width: 300px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.carte h3 {
    margin-top: 0;
    color: #3b82f6;
    border-bottom: 1px solid #334155;
    padding-bottom: 10px;
}

.carte p {
    font-size: 14px;
    color: #cbd5e1;
}

/* Pied de page */
footer {
    text-align: center;
    padding: 20px;
    background-color: #1e293b;
    color: #64748b;
    font-size: 14px;
    border-top: 1px solid #334155;
}