/* Nascondi il burger menu sui dispositivi desktop di default */
.burger-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.burger-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: white;
    transition: 0.3s;
}

/* Classi desktop di entrambe le pagine */
.desktop-nav-items,
.desktop-nav,
.desktop-auth-buttons {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu {
    display: none;
}

/* Animazione X per il burger attivo */
.burger-menu-btn.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.burger-menu-btn.open span:nth-child(2) {
    opacity: 0;
}

.burger-menu-btn.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Stili per schermi piccoli (sotto i 768px) */
@media (max-width: 768px) {
    /* Nasconde i blocchi desktop su entrambe le pagine */
    .desktop-nav-items,
    .desktop-nav,
    .desktop-auth-buttons {
        display: none;
    }

    /* Nasconde il pulsante di ritorno desktop, che ora vive nel menu mobile */
    .return {
        display: none !important;
    }

    .burger-menu-btn {
        display: flex; /* Mostra il burger menu */
    }

    /* Stile del menu a tendina a comparsa (Cyberpunk style) */
    .mobile-menu {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;

        /* Background coerente: gradiente scuro profondo con riflesso azzurro */
        background: linear-gradient(135deg, rgba(12, 18, 26, 0.95), rgba(6, 10, 15, 0.98));
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);

        /* Bordo inferiore luminoso in stile cyberpunk */
        border-bottom: 1px solid rgba(100, 200, 255, 0.2);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(100, 200, 255, 0.1);

        padding: 25px 20px;
        box-sizing: border-box;
        gap: 15px;

        /* Gestione della transizione fluida */
        transform: translateY(-15px);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
        z-index: 999;
    }

    .mobile-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-link {
        color: white;
        text-decoration: none;
        font-size: 16px;
        font-weight: 500;
        padding: 10px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .mobile-link.active {
        color: #007aff;
    }

    .mobile-divider {
        height: 1px;
        background-color: rgba(255, 255, 255, 0.1);
        margin: 5px 0;
    }

    .mobile-user-info {
        padding: 5px 0;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.7);
    }

    .mobile-ai-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-top: 10px;
    }
}

/* Logout via POST: il pulsante deve sembrare il link che sostituisce */
.logout-form { margin: 0; display: inline-block; }
.logout-form .btn-logout { font-family: inherit; }
.logout-form-mobile { margin: 0; display: block; }
.logout-form-mobile .mobile-link {
    width: 100%;
    text-align: left;
    background: none;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-family: inherit;
    cursor: pointer;
}