/* Starter Page Transitions — Base Styles */

html.spt-transitioning {
    overflow: hidden;
}

#spt-overlay {
    position: fixed;
    inset: 0;
    z-index: 2147483647;
    pointer-events: none;
    overflow: hidden;
}

#spt-overlay.spt-blocking {
    pointer-events: all;
}

#spt-overlay.spt-hidden {
    visibility: hidden;
}

/* Curtain Split */
.spt-curtain-panel {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    will-change: transform;
}
.spt-curtain-left { left: 0; }
.spt-curtain-right { right: 0; }

/* Grid Shatter */
.spt-grid-tile {
    position: absolute;
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* Diagonal Blinds */
.spt-blind-strip {
    position: absolute;
    will-change: transform;
    backface-visibility: hidden;
}

/* Origami Fold */
.spt-origami-panel {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    will-change: transform;
    backface-visibility: hidden;
    transform-style: preserve-3d;
}

/* Sliced Panels */
.spt-slice {
    position: absolute;
    left: 0;
    width: 100%;
    will-change: transform;
    backface-visibility: hidden;
}

/* SVG Filters for Liquid Morph */
.spt-svg-filters {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* Canvas layer */
.spt-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

/* Circle Wipe clip layer */
.spt-circle-layer {
    position: absolute;
    inset: 0;
    will-change: clip-path;
}

/* Zoom Vortex layer */
.spt-vortex-layer {
    position: absolute;
    inset: 0;
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* Fade / Blur / Slide / Stack layers */
.spt-fade-layer,
.spt-slide-layer {
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* Logo Overlay */
.spt-logo-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    will-change: transform, opacity, filter;
}

.spt-logo-img {
    display: block;
    height: auto;
    max-height: 80vh;
    object-fit: contain;
}

.spt-logo-svg-wrap svg {
    max-height: 80vh;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    #spt-overlay * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}