.interva-nav-loader {
    position: fixed;
    z-index: 2147483647;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-100%);
    transition: opacity .12s ease, transform .12s ease;
}

.interva-is-navigating .interva-nav-loader {
    opacity: 1;
    transform: translateY(0);
}

.interva-nav-loader__bar {
    display: block;
    width: 35%;
    height: 100%;
    border-radius: 0 999px 999px 0;
    background: #d84f68;
    box-shadow: 0 0 12px rgba(216, 79, 104, .55);
    animation: interva-nav-progress 1.15s ease-in-out infinite;
}

.interva-nav-loader__spinner {
    position: fixed;
    top: 14px;
    right: 18px;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(216, 79, 104, .2);
    border-top-color: #d84f68;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 2px 12px rgba(32, 32, 50, .14);
    animation: interva-nav-spin .7s linear infinite;
}

.interva-nav-loader__label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

@keyframes interva-nav-progress {
    0% { margin-left: -35%; }
    100% { margin-left: 100%; }
}

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

@media (prefers-reduced-motion: reduce) {
    .interva-nav-loader__bar,
    .interva-nav-loader__spinner {
        animation-duration: 1.8s;
    }
}