/* CSS Performance Optimizations for PressPective */

/* Performance optimizations */
.openseadragon-canvas {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
    will-change: transform;
}

.openseadragon-canvas canvas {
    image-rendering: optimizeSpeed;             /* Older versions of FF */
    image-rendering: -moz-crisp-edges;          /* FF 6.0+ */
    image-rendering: -webkit-optimize-contrast; /* Safari */
    image-rendering: -o-crisp-edges;            /* Opera */
    image-rendering: pixelated;                 /* Awesome future-browsers */
    -ms-interpolation-mode: nearest-neighbor;   /* IE */
}

.annotation-overlay {
    transform: translateZ(0);
    will-change: transform;
}

.annotation {
    will-change: transform, opacity;
}

/* Viewer highlight improvements */
.viewer-wrapper.active {
    z-index: 2;
}

.viewer-wrapper.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 15;
    box-shadow: inset 0 0 0 2px #4a9eff, inset 0 0 20px rgba(74, 158, 255, 0.2);
    border-radius: 4px;
}

/* Improve navigation button contrast */
.openseadragon-container .navigator {
    border-radius: 4px;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(3px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.openseadragon-container .navigator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.5);
    pointer-events: none;
}

/* Fix layout control positions to prevent overlap */
.openseadragon-container .openseadragon-control {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.openseadragon-container .openseadragon-control svg,
.openseadragon-container .openseadragon-control img {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 4px;
}