/*
 * app-loader.css
 * ─────────────────────────────────────────────────────────────────────────────
 * Modern full-page loading overlay — drop-in replacement for jQuery blockUI.
 * Works with html.light-mode / html.dark-mode theme system.
 *
 * Deploy to : /include/styles/app-loader.css
 * Include in: /views/layout/page_foot.inc
 * ─────────────────────────────────────────────────────────────────────────────
 */

/* ── Overlay ── */
#app-loader {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(0, 0, 0, .55);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 14px;
    animation: loaderFadeIn .18s ease;
}

    #app-loader.active {
        display: flex;
    }

@keyframes loaderFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ── Spinner card ── */
#app-loader-card {
    background: rgba(20, 24, 40, .92);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 16px;
    padding: 28px 36px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    box-shadow: 0 16px 48px rgba(0,0,0,.5);
    min-width: 160px;
    text-align: center;
    animation: loaderCardIn .25s cubic-bezier(.16,1,.3,1);
}

html.light-mode #app-loader-card {
    background: rgba(255,255,255,.96);
    border: 1px solid rgba(0,0,0,.1);
    box-shadow: 0 16px 48px rgba(0,0,0,.2);
}

@keyframes loaderCardIn {
    from {
        opacity: 0;
        transform: scale(.92) translateY(8px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ── Spinner ring ── */
.app-loader-ring {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255,255,255,.1);
    border-top-color: #4f8ef7;
    border-radius: 50%;
    animation: loaderSpin .7s linear infinite;
    flex-shrink: 0;
}

html.light-mode .app-loader-ring {
    border-color: rgba(0,0,0,.08);
    border-top-color: #2563eb;
}

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

/* ── Message text ── */
.app-loader-msg {
    font-size: .82rem;
    font-weight: 500;
    color: rgba(255,255,255,.75);
    letter-spacing: .3px;
    max-width: 200px;
    line-height: 1.4;
}

html.light-mode .app-loader-msg {
    color: #374151;
}

/* ── Page interaction lock while loading ── */
body.app-loading {
    pointer-events: none;
    user-select: none;
}