:root {
    --nav-overlay-padding: 140px 60px 80px;
    --nav-overlay-transform-origin: top right;
}

/* Overlay element */
.default-overlay {
    display: none;
    padding: var(--nav-overlay-padding);
    color: var(--dark-mode-text-color);
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transform-origin: var(--nav-overlay-transform-origin);
    transition: opacity 0.5s ease;
    overflow: hidden;
    align-items: center;
    justify-content: center;
    z-index: 100;
}
    .default-overlay::before {
        content: '';
        position: fixed;
        top: 50%;
        right: 50%;
        transform: translate(2500px, -2500px);
        width: 5000px;
        height: 5000px;
        border-radius: 50%;
        transform-origin: var(--nav-overlay-transform-origin);
        background-color: #000;
        animation: nav-bg-animate-in 1.5s ease;
        z-index: -1;
        overflow: hidden;
    }
        .overlay-closing .default-overlay::before { 
            transform: scale(0);
            animation: nav-bg-animate-out 0.5s ease;
        }
    .default-overlay.active { 
        display: flex;
        flex-wrap: wrap;
     }


/* Overlay open/close btn */
.overlay-btn { cursor: pointer; }
    .overlay-btn > * { pointer-events: none; }


/* Page header */
.overlay-init .page-top #header {
    transform: translate3d(0px, -34px, 0px);
}

.overlay-init.overlay-open #main_header,
.overlay-init.overlay-open #main_header a,
.overlay-init.overlay-open #main_header button{
    transition: color 0.5s ease;
    color: var(--dark-mode-text-color);
}
.overlay-init.overlay-open #main_header #search {
    transition: color 0.5s ease, border-color 0.5s ease;
    border-color: var(--dark-mode-text-color);
}
.overlay-init.overlay-closing #main_header,
.overlay-init.overlay-closing #main_header a,
.overlay-init.overlay-closing #main_header button {
    transition: color 0.5s ease, border-color 0.5s ease !important;
    /*color: black;*/
}
body.overlay-open #main_header .main-header-inner #colourThemeSelector {
    opacity: 0;
    pointer-events: none;
    transform: translate3d(0, -100px, 0);
}
    



/* Enter/exit animations */
@keyframes nav-bg-animate-in {
    0% {
        transform: scale(0) translate(2500px, -2500px);
        top: 114px;
        right: 106px;
    }
    100% {
        transform: scale(1) translate(2500px, -2500px);
        top: 50%;
        right: 50%;
    }
}
@keyframes nav-bg-animate-out {
    0% {
        transform: scale(1) translate(2500px, -2500px);
        opacity: 1;
        top: 50%;
        right: 50%;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: scale(0) translate(2500px, -2500px);
        opacity: 0;
        top: 50px;
        right: 106px;
    }
}
@media (max-width: 1279px) {
    @keyframes nav-bg-animate-in {
        0% {
            transform: scale(0) translate(2500px, -2500px);
            top: 114px;
            right: 70px;
        }
        100% {
            transform: scale(1) translate(2500px, -2500px);
            top: 50%;
            right: 50%;
        }
    }
    @keyframes nav-bg-animate-out {
        0% {
            transform: scale(1) translate(2500px, -2500px);
            opacity: 1;
            top: 50%;
            right: 50%;
        }
        50% {
            opacity: 1;
        }
        100% {
            transform: scale(0) translate(2500px, -2500px);
            opacity: 0;
            top: 50px;
            right: 70px;
        }
    }
}

@keyframes close-btn-animate-in {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}
@keyframes close-btn-animate-out {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}