/* 1. Stato di base (In cima alla pagina) */
.modern-navbar {
    background-color: var(--bs-primary) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid transparent;
}

/* 2. Stato "Scrolled" (Attivato da JS quando scorri) */
.modern-navbar.scrolled {
    background-color: rgba(var(--bs-primary-rgb), 0.55) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Il tuo Dropdown personalizzato effetto vetro */
.dropdown-menu {
    background-color: rgba(255, 255, 255, 0.65);
}

/* 3. Stile base dei link (Valido per PC e Smartphone) */
.modern-navbar .nav-link {
    position: relative;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8) !important;
    transition: color 0.3s ease;
}

.modern-navbar .nav-link:hover,
.modern-navbar .nav-link.active {
    color: #ffffff !important;
}

/* 4. LA LINEA ANIMATA (Ora fuori dal blocco PC, funziona sempre) */
.modern-navbar .nav-link::before {
    content: '';
    position: absolute;
    width: 0%;
    height: 3px;
    bottom: 2px;
    /* Sollevata leggermente per non essere tagliata */
    left: 50%;
    background-color: #38bdf8;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    border-radius: 3px 3px 0 0;
    box-shadow: 0 -2px 10px rgba(56, 189, 248, 0.5);
}

/* Allarga la barra. calc(100% - 1rem) la rende perfetta per la lunghezza della parola! */
.modern-navbar .nav-item:hover .nav-link::before,
.modern-navbar .nav-link.active::before {
    width: calc(100% + 1rem);
}


/* =========================================
REGOLE SOLO PER PC (Schermi grandi)
========================================= */
@media (min-width: 992px) {

    /* Il Dropdown "volante" e il Ponte Invisibile */
    .dropdown-menu {
        display: block;
        visibility: hidden;
        opacity: 0;
        margin-top: 0;
        transform: translateY(15px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        pointer-events: none;
    }

    .dropdown-menu::before {
        content: '';
        position: absolute;
        top: -25px;
        left: 0;
        width: 100%;
        height: 25px;
        background: transparent;
    }

    .nav-item.dropdown:hover .dropdown-menu {
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }
}

/* =========================================
REGOLE SOLO PER SMARTPHONE (Schermi piccoli)
========================================= */
@media (max-width: 991px) {

    /* Menu pulito senza bordi extra */
    .dropdown-menu {
        border: none;
        margin-top: 0.5rem;
    }
}