/* ================================================================
   AICAD Page Loading Overlay
   A modern, elegant overlay shown during postbacks / button clicks
   across the whole ESS Portal (wired up from Site.Master and
   pages/Main.Master, plus page-loading-overlay.js).
   ================================================================ */

#pageLoadingOverlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    opacity: 0;
    transition: opacity 0.18s ease;
}

    #pageLoadingOverlay.active {
        display: flex;
        opacity: 1;
    }

.page-loading-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 28px 36px;
}

/* Dual-ring spinner: outer green ring, inner counter-rotating gold ring */
.page-loading-spinner {
    position: relative;
    width: 56px;
    height: 56px;
}

    .page-loading-spinner::before,
    .page-loading-spinner::after {
        content: "";
        position: absolute;
        inset: 0;
        border-radius: 50%;
        border: 4px solid transparent;
    }

    .page-loading-spinner::before {
        border-top-color: #7a052d;
        border-right-color: #7a052d;
        animation: pageLoadingSpin 0.9s cubic-bezier(0.55, 0.15, 0.45, 0.85) infinite;
    }

    .page-loading-spinner::after {
        inset: 9px;
        border-bottom-color: #59a924;
        border-left-color: #59a924;
        animation: pageLoadingSpinReverse 1.15s cubic-bezier(0.55, 0.15, 0.45, 0.85) infinite;
    }

.page-loading-text {
    margin-top: 16px;
    font-weight: 600;
    color: #14231A;
    font-size: 1.3rem;
    letter-spacing: 0.03em;
}

.page-loading-dots::after {
    content: "";
    display: inline-block;
    width: 1.2em;
    text-align: left;
    animation: pageLoadingDots 1.2s steps(4, end) infinite;
}

@keyframes pageLoadingSpin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes pageLoadingSpinReverse {
    to {
        transform: rotate(-360deg);
    }
}

@keyframes pageLoadingDots {
    0% {
        content: "";
    }

    25% {
        content: ".";
    }

    50% {
        content: "..";
    }

    75% {
        content: "...";
    }

    100% {
        content: "";
    }
}

@media (prefers-reduced-motion: reduce) {
    .page-loading-spinner::before,
    .page-loading-spinner::after,
    .page-loading-dots::after {
        animation-duration: 2.4s;
    }
}