/* loading animation component */
.global-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    backdrop-filter: blur(4px);
}

.global-loader.active {
    display: flex;
}

.loader-content {
    text-align: center;
    padding: 2rem;
}

/* spinner animation */
.loader-spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    border: 4px solid #e5e7eb;
    border-top-color: #1e40af;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-text {
    color: #4b5563;
    font-size: 0.875rem;
    margin: 0;
}

/* skeleton loader untuk table rows */
.skeleton-loader {
    display: block;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}

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

.skeleton-row {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.skeleton-cell {
    height: 20px;
    flex: 1;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}

.skeleton-cell.short {
    flex: 0 0 100px;
}

.skeleton-cell.medium {
    flex: 0 0 150px;
}

/* skeleton untuk cards */
.skeleton-card {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.skeleton-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.skeleton-text {
    height: 20px;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}

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

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

/* inline loader untuk buttons */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}