/* Media performance: GPU-friendly animations, no heavy filters on large scroll images */

.image-card,
.hero-new-image,
.sat-results__card,
.retro-card,
.retro-card-video,
.video-testimonial-card,
.result-card-new,
.course-card-image {
    will-change: transform;
}

picture {
    display: block;
    line-height: 0;
}

picture img {
    max-width: 100%;
    height: auto;
}

/* Profile avatars: avoid filter repaint on scroll (was saturate/sepia) */
.retro-profile {
    filter: none;
    opacity: 0.92;
}

.retro-profile img {
    opacity: 0.9;
}

img[data-src] {
    opacity: 0;
    transition: opacity 0.35s ease;
}

img[data-src].is-loaded,
img.is-loaded {
    opacity: 1;
}

video.lazy-video {
    background: #0f172a;
}