/* Structure générale */
body {
    font-family: Arial, sans-serif;
    background: #f2f6fc;
    margin: 0;
    padding: 0;
    width: 100%;
}

/* Bouton Accueil */
.accueil {
    margin: 20px;
    text-align: center;
    color: white;
}

.accueil button {
    background: #4a90e2;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.3s;
}

.accueil button a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.accueil button:hover {
    background: #3a7ac4;
}

/* Conteneur du formulaire */
.formulaire {
    width: 420px;
    margin: 40px auto;
    background: white;
    padding: 25px 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Titre */
.libelle {
    font-size: 22px;
    font-weight: bold;
    color: #2c3e50;
    text-align: center;
    margin-bottom: 10px;
}

/* Champs */
.fen {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    color: #2c3e50;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #c9d6e8;
    border-radius: 6px;
    background: #f8fbff;
    transition: 0.3s;
}

.form-control:focus {
    border-color: #4a90e2;
    box-shadow: 0 0 5px rgba(74, 144, 226, 0.4);
    outline: none;
}

/* Bouton envoyer */
.btn {
    width: 100%;
    padding: 12px;
    background: #4a90e2;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

.btn:hover {
    background: #3a7ac4;
}

/* Messages d’alerte */
.alert {
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 14px;
}

.alert-success {
    background: #d4f4dd;
    color: #2e7d32;
}

.alert-danger {
    background: #f8d7da;
    color: #a94442;
}

/* ----------------------------- */
/* 📱 RESPONSIVE DESIGN MOBILE   */
/* ----------------------------- */

@media (max-width: 980px) {

    .formulaire {
        width: 90%;
        padding: 20px;
        margin: 20px auto;
    }

    .libelle {
        font-size: 30px;
    }

    .accueil {
        text-align: center;
        margin-bottom: 10px;
    }

    .accueil button {
        width: 100%;
        padding: 12px;
        font-size: 40px;
    }

    .btn {
        font-size: 25px;
        padding: 12px;
    }
}