/* TuVi Image Optimizer — Loading overlay */

.tuvi-optim-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease-out;
}

.tuvi-optim-overlay.is-visible {
    opacity: 1;
    pointer-events: all;
}

.tuvi-optim-box {
    background: #fff;
    border-radius: 14px;
    padding: 22px 30px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    font-weight: 600;
    color: #333;
    max-width: 90%;
    animation: tuviOptimPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tuvi-optim-spinner {
    width: 26px;
    height: 26px;
    border: 3px solid #f3d68a;
    border-top-color: #b8860b;
    border-radius: 50%;
    animation: tuviOptimSpin 0.7s linear infinite;
    flex-shrink: 0;
}

.tuvi-optim-text {
    line-height: 1.4;
}

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

@keyframes tuviOptimPop {
    from { transform: scale(0.85); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

@media (max-width: 480px) {
    .tuvi-optim-box {
        padding: 18px 22px;
        font-size: 14px;
    }
}