@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.skeleton {
    background: #e2e8f0;
    background-image: linear-gradient(90deg, #e2e8f0 0px, #f1f5f9 40px, #e2e8f0 80px);
    background-size: 2000px 100%;
    animation: shimmer 2s infinite linear;
    border-radius: 4px;
}