/*
 *  Loader di cambio pagina
 *  Compare subito al click e resta acceso almeno 2 secondi (vedi loader.js),
 *  anche sulle pagine veloci, per far capire che i dati sono stati aggiornati.
 */
#page-loader {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(244, 246, 248, 0.82);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility 0s linear .3s;
}

#page-loader.is-active {
    opacity: 1;
    visibility: visible;
    transition: opacity .2s ease, visibility 0s linear 0s;
    cursor: progress;
}

#page-loader.no-transition {
    transition: none;
}

/* Copertura della nuova pagina prima che lo script crei l'overlay */
html.page-loader-pending::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 1999;
    background: rgba(244, 246, 248, 0.82);
}
#page-loader .page-loader-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    min-width: 280px;
    max-width: 90vw;
    padding: 1.75rem 2rem;
    background: #fff;
    border-radius: .75rem;
    box-shadow: 0 .5rem 1.5rem rgba(33, 37, 41, .15);
    text-align: center;
}

#page-loader .page-loader-spinner {
    width: 3rem;
    height: 3rem;
    border: .3rem solid #e3e6ea;
    border-top-color: #0d6efd;
    border-radius: 50%;
    animation: page-loader-spin .8s linear infinite;
}

#page-loader .page-loader-msg {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
    color: #212529;
    transition: opacity .2s ease;
}

#page-loader .page-loader-msg.is-fading {
    opacity: 0;
}

#page-loader .page-loader-sub {
    margin: -.5rem 0 0;
    font-size: .8rem;
    color: #6c757d;
}

@keyframes page-loader-spin {
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
    #page-loader .page-loader-spinner { animation-duration: 2s; }
}