.main-header {
    font-family: 'Poppins', sans-serif;
    /* Dégradé violet conforme à l'image */
    background: linear-gradient(to right, #8A00C4, #A044FF, #D191FF);
    padding: 15px 40px;
    border-bottom-left-radius: 40px; /* Arrondi caractéristique à gauche */
    border-bottom-right-radius: 40px; /* Arrondi caractéristique à droite */
    color: white;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

/* Style du Logo */
.logo {
    display: flex;
    align-items: baseline;
    font-weight: 800;
    font-size: 24px;
    text-transform: uppercase;
    font-style: italic;
}

.logo .online { font-size: 32px; }
.logo .vote-tag {
    font-size: 12px;
    margin-left: 2px;
    text-transform: lowercase;
}

/* Menu de Navigation */
.nav-menu ul {
    list-style: none;
    display: flex;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.nav-menu ul li a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    text-transform: capitalize;
    transition: opacity 0.3s;
}

.nav-menu ul li a:hover {
    opacity: 0.8;
}

/* Bouton Se Connecter */
.btn-connect {
    background-color: white;
    color: #8A00C4; /* Texte violet assorti au dégradé */
    padding: 10px 25px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    transition: transform 0.2s, box-shadow 0.2s;
    display: inline-block;
}

.btn-connect:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Responsive pour mobile */
@media (max-width: 768px) {
    .nav-menu { display: none; } /* On cache le menu sur mobile ou on utilise un burger */
    .main-header { padding: 10px 20px; }
}