@keyframes relatedPostFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.related-post-article.animate-in {
    animation: relatedPostFadeIn 0.6s ease-out forwards;
}

/* Skeleton Loader */
.skeleton-loader {
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid #edf2f7;
}

.skeleton-title {
    height: 2.5rem;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 1rem;
    width: 80%;
}

.skeleton-meta {
    height: 1rem;
    background: #f0f0f0;
    border-radius: 4px;
    margin-bottom: 2rem;
    width: 40%;
}

.skeleton-image {
    height: 400px;
    background: #f0f0f0;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.skeleton-text {
    height: 1rem;
    background: #f0f0f0;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

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

/* Button Loading State */
#load-more-related.loading {
    background-color: #991b1b; /* darker red */
    pointer-events: none;
    opacity: 0.8;
}

#load-more-related.loading .loader {
    display: inline-block !important;
}

#load-more-related.loading .btn-text {
    opacity: 0.7;
}