.app-loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 20000;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    background: rgba(3, 32, 51, .68);
    -webkit-backdrop-filter: blur(3px);
    backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .16s ease, visibility .16s ease;
}

.app-loading-overlay.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.app-loading-panel {
    width: min(390px, 100%);
    padding: 1.75rem;
    border: 1px solid rgba(255, 255, 255, .7);
    border-radius: 1rem;
    background: #fff;
    color: #163247;
    text-align: center;
    box-shadow: 0 1.25rem 3.75rem rgba(0, 0, 0, .25);
}

.app-loading-spinner {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 1rem;
    border: .32rem solid #dceaf2;
    border-top-color: #1d71b8;
    border-right-color: #35b7b3;
    border-radius: 50%;
    animation: app-loading-spin .8s linear infinite;
}

.app-loading-title {
    margin: 0 0 .35rem;
    font-size: 1.12rem;
    font-weight: 800;
}

.app-loading-message {
    margin: 0;
    color: #637b8c;
    font-size: .9rem;
    line-height: 1.45;
}

body.app-is-loading {
    cursor: wait;
}

@keyframes app-loading-spin {
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
    .app-loading-overlay { transition: none; }
    .app-loading-spinner { animation-duration: 1.8s; }
}