/* Lazy Loading 스타일 */
img.lazy {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

img.lazy.loaded {
    opacity: 1;
}

/* 로딩 중 플레이스홀더 */
img.lazy:not(.loaded) {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 백그라운드 이미지 lazy loading */
.lazy-background {
    background-image: none !important;
}

.lazy-background.loaded {
    transition: opacity 0.3s;
}