/* Status Page Performance Optimizations */

/* Skeleton Loading Animations for Better Perceived Performance */
.skeleton-text, .skeleton-stat {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
    height: 1em;
    margin-bottom: 0.5rem;
}

.skeleton-title {
    height: 1.5em;
    width: 60%;
}

.skeleton-subtitle {
    height: 1.2em;
    width: 40%;
}

.skeleton-stat {
    height: 2em;
    margin-bottom: 0.5rem;
}

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

/* Chart Container Optimizations */
.status-charts-container {
    /* Use containment for better performance */
    contain: layout style paint;
}

/* Lazy Loading Optimization */
.lazy-load-placeholder {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 1px dashed #dee2e6;
}

.lazy-load-content {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.lazy-load-content.loaded {
    opacity: 1;
}

/* Performance-optimized loading states */
.loading-optimized {
    /* Prevent layout shift during loading */
    min-height: 200px;
    position: relative;
}

.loading-optimized .dash-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Chart performance optimizations */
.chart-container {
    /* Use GPU acceleration for smoother rendering */
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Reduce repaints for frequently updating elements */
.status-countdown {
    will-change: auto;
    transform: translateZ(0);
}

/* Enhanced focus states without performance impact */
.nav-link:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Optimize table rendering */
.ag-theme-alpine .ag-row {
    /* Improve row rendering performance */
    contain: layout style;
}

/* Progressive enhancement for chart loading */
@media (prefers-reduced-motion: reduce) {
    .skeleton-text, .skeleton-stat {
        animation: none;
        background: #e0e0e0;
    }
    
    .lazy-load-content {
        transition: none;
    }
}

/* Status summary grid optimizations */
.status-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

/* Responsive chart containers */
.chart-responsive {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 50%; /* 2:1 aspect ratio */
}

.chart-responsive > div {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Memory-efficient loading placeholders */
.placeholder-efficient {
    background-color: #f8f9fa;
    border-radius: 4px;
    padding: 1rem;
    text-align: center;
    color: #6c757d;
}

.placeholder-efficient::before {
    content: '';
    display: inline-block;
    width: 2rem;
    height: 2rem;
    margin-right: 0.5rem;
    background: currentColor;
    border-radius: 50%;
    opacity: 0.3;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}