/**
 * Album Gallery Premium - Frontend Modern Styles
 * Part of Phase 1: Skeleton Loading
 */

/* Skeleton Container */
.nag-skeleton {
    position: relative;
    overflow: hidden;
    background-color: #f3f4f6; /* light grey base */
    border-radius: 8px; /* matches premium UI */
    width: 100%;
}

/* Shimmer Overlay */
.nag-skeleton.nag-loading::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 2;
    transform: translateX(-100%);
    background-image: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0,
        rgba(255, 255, 255, 0.2) 20%,
        rgba(255, 255, 255, 0.5) 60%,
        rgba(255, 255, 255, 0)
    );
    animation: nag-shimmer 2s infinite;
}

@keyframes nag-shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* Image behavior inside skeleton */
.nag-skeleton img {
    display: block;
    width: 100%;
    height: auto;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
}

/* Loaded State */
.nag-skeleton.nag-loaded img {
    opacity: 1;
}

.nag-skeleton.nag-loaded::after {
    display: none;
}

/* Support for different hover types */