/* Page Transition Animation - Circular Expand/Collapse */

.page-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.transition-circle {
    position: absolute;
    border-radius: 50%;
    transform: scale(1);
    transform-origin: center;
    transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.transition-circle.outer {
    background: #2E2E2E;
    width: 150vmax;
    height: 150vmax;
}

.transition-circle.inner {
    background: #1A1A1A;
    width: 120vmax;
    height: 120vmax;
}

/* Active state - expanding */
.page-transition-overlay.active .transition-circle {
    transform: scale(1);
}

.page-transition-overlay.active .transition-circle.inner {
    transition-delay: 0.1s;
}

/* Reveal state - collapsing to show new page (reverse order) */
.page-transition-overlay.reveal .transition-circle {
    transform: scale(0);
    transition: transform 0.8s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.page-transition-overlay.reveal .transition-circle.inner {
    transition-delay: 0.15s;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .transition-circle {
        transition: opacity 0.3s ease;
        transform: none !important;
    }
    
    .page-transition-overlay.active .transition-circle {
        opacity: 1;
    }
    
    .page-transition-overlay.reveal .transition-circle {
        opacity: 0;
    }
}