.ist-layout {
    display: flex;
    flex-direction: column;
    width: min(90%, 1600px);
    padding: 0px;
    box-sizing: border-box;
    margin: 20px auto;
    /*padding: 0 var(--spacing-lg);*/
    background-color: #fff;
}

.ist-content {
    margin-right: 120px;
    margin-left: 120px;
}

.blue-banner {
    background-color: rgba(40, 143, 226, 1);
    color: white;
    padding: 20px;
    text-align: left;
    border-radius: 4px;
    margin-bottom: 30px;
}

.blue-banner h2 {
    margin: 0;
    font-size: 18px;
}

.page-title {
    margin: 20px 0;
    font-weight: 700;
    color: #222;
}

.conseil-tiles {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 colonnes fixes */
    gap: 60px;
    margin-top: 2rem;
    box-sizing: border-box;
    align-items: start;
}

.conseil-tiles.conseil-single-tile {
    grid-template-columns: minmax(300px, 900px);
    justify-content: center;
}

.conseil-tiles.conseil-single-tile .tile {
    width: 100% !important;
    max-width: 900px;
}

/* Conteneur pour empiler les tuiles verticalement */
.second-column-tiles {
    display: flex;
    flex-direction: column;
    gap: 20px; /* espace entre les tuiles */
}

.tile {
    width: auto !important;
    border: 1px solid #707070;
    border-radius: 10px;
    padding: 18px;
    box-sizing: border-box;    /* important pour le calcul des tailles */
    min-height: 220px;         /* ajuste selon ton design */
    overflow: auto;            /* évite que le contenu casse la mise en page */
    background: transparent;
}

/* forcer les éléments internes à ne pas s'étendre hors de la tuile */
.tile > * {
    max-width: 100%;
    box-sizing: border-box;
}
.tile:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(11, 41, 81, 0.1);
}

/* Arrondi uniquement en bas à droite */
.bottom-right-rounded {
    border-radius: 0 0 30px 0; /* top-left, top-right, bottom-right, bottom-left */
}

.tile h3 {
    color: rgba(11, 41, 81, 1);
    border-bottom: 1px solid #278EE1;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.council-section h3 {
    text-transform: none;
}
.member-group {
    color: grey;
}

.member-group ul li {
    line-height: 1.5em !important;
}

.member-group h4,
.sub-group h5 {
    color: #707070;
    margin-top: 1rem;
    margin-bottom: 0.25rem;
}

.official-members li {
    color: #707070;
}

.council-section li {
    color: #707070;
    line-height: 1.5em;
}

ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

ul li {
    padding: 0.25rem 0;
    font-size: 0.95rem;
}

.role {
    color: rgba(11, 41, 81, 0.7);
    font-style: italic;
}

.ist-missions {
    max-width: 1200px;
    margin: 0 auto 30px auto;

    padding: 25px 30px;

    font-family: 'Raleway', sans-serif;
    line-height: 1.6;

    text-align: left;
}

.ist-missions p {
    margin-bottom: 15px;
    font-weight: 600;
    color: #707070;
}

.ist-missions ul {
    margin: 0;
    padding-left: 22px;
}

.ist-missions li {
    margin-bottom: 10px;
    color: #707070;
}

.ist-members {
    margin-top: 20px;
}

.ist-coordinator strong {
    color: #288fe2;
    padding: 15px 20px;
    font-weight: 700;
    margin-bottom: 15px;
}

.ist-other-members {
    display: block;
    margin-top: 20px;
}

.ist-member {
    display: table;
    color: gray;
    margin-left: 40px;
    margin-bottom: 20px;
    padding: 10px 15px;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.ist-member strong {
    color: #288fe2;
}

/* La Grosse Tuile Blanche */
.ist-card {
    background: #fff;
    border: 2px solid var(--tertiary-blue);
    border-bottom-right-radius: 25px;
    /*box-shadow: 0 10px 30px rgba(0,0,0,0.08);*/
    padding: 30px;
    margin: 20px auto;
    width: 100%;
    max-width: 1200px;
}

/* La bannière interne à la tuile */
.ist-card .blue-banner {
    margin: -30px -30px 30px -30px; /* Colle aux bords de la tuile */
    text-align: center;
}

/* Grille des membres */
.ist-members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* Chaque petit item de membre */
.ist-member-item {
    background: #f8fafd;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #ddd;
    transition: all 0.3s ease;
}

.ist-member-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* Style spécifique pour le coordinateur */
.ist-member-item.coordinator {
    border-left-color: #288fe2;
    background: #ebf5ff;
}

.ist-member-item .name {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 5px;
}

.ist-member-item .role {
    display: block;
    font-size: 15px;
    color: #7f8c8d;
    line-height: 1.4;
}

.ist-member-item.coordinator .name {
    color: #288fe2;
}

/* --- Mode Responsive pour la page IST --- */
@media (max-width: 768px) {
    .ist-layout {
        margin: 0 auto 20px auto;
        padding: 0 15px;
        box-sizing: border-box;
    }

    .ist-content {
        margin: 0 auto;
    }

    .ist-main-layout {
        padding-right: 20px;
    }

    /* Le conteneur de toutes les tuiles */
    .conseil-tiles {
        display: flex !important;
        flex-direction: column !important;
        gap: 20px;
        align-items: center;
    }

    .conseil-single-tile {
        width: 100%;
    }

    .conseil-single-tile .tile {
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 auto !important;
    }

    /* Le conteneur intermédiaire pour la tuile 2 et 3 */
    .second-column-tiles {
        display: flex !important;
        flex-direction: column !important; /* Empile aussi les sous-tuiles */
        width: 100% !important;
        gap: 20px;
    }

    .tile {
        width: 100% !important;
        margin: 0 !important;
        /* On adoucit les arrondis pour le mobile */
        border-radius: 8px !important;
    }

    /* On ajuste les listes pour qu'elles soient bien lisibles */
    .council-section ul {
        padding-left: 20px;
    }

    .council-section h3 {
        font-size: 1.3em;
        text-align: center; /* Plus propre sur mobile */
    }
}