/* Skeleton loading styles */
.skeleton-card {
    animation: pulse 1.5s ease-in-out infinite;
    border-radius: 8px;
    overflow: hidden;
    background: #f9f9f9;
}

.skeleton-content {
    padding: 15px;
}

.skeleton-title {
    height: 20px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 10px;
}

/* Tạo thêm các skeleton lines nếu cần */
.skeleton-line {
    height: 12px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 10px;
}

.skeleton-line.short {
    width: 60%;
}

.skeleton-line.medium {
    width: 80%;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}