.app-nav-loader-backdrop {
    position: fixed;
    inset: 0;
    z-index: 5000;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.32);
    backdrop-filter: blur(1.5px);
    pointer-events: none;
}

.app-nav-loader-backdrop.is-visible {
    display: flex;
}

.app-nav-loader-spinner {
    width: 3rem;
    height: 3rem;
    border: 3px solid rgba(255, 255, 255, 0.35);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: app-nav-loader-spin 0.7s linear infinite;
}

.app-nav-loader-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    z-index: 5001;
    opacity: 0;
    background: linear-gradient(90deg, #1d4ed8 0%, #60a5fa 100%);
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.45);
    transition: width 0.18s ease, opacity 0.18s ease;
}

.app-nav-loader-bar.is-visible {
    opacity: 1;
}

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