/**
 * Loading Indicators
 * Hardware-accelerated, theme-integrated loading states
 */

/* Removed layout-transition-loader - using app's built-in loading indicator instead */

/* Skeleton loading for stream blocks */
.stream-block-skeleton {
    position: relative;
    overflow: hidden;
    background: var(--bg-secondary, #1e1e1e);
}

.stream-block-skeleton::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.05) 50%, 
        transparent 100%);
    animation: skeleton-shimmer 1.5s infinite;
}

@keyframes skeleton-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Lane monitor loading indicator */
.lane-monitor-loading {
    position: relative;
    overflow: hidden;
}

.lane-monitor-loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(var(--center-color-rgb, 255, 255, 255), 0.2) 50%, 
        transparent 100%);
    animation: loading-sweep 2s infinite;
    z-index: 1;
}

@keyframes loading-sweep {
    0% { left: -100%; }
    100% { left: 100%; }
}


/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .layout-spinner {
        animation: none;
        border-top-color: var(--primary-color, #fff);
    }
    
    .stream-block-skeleton::before,
    .lane-monitor-loading::before {
        animation: none;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.05);
    }
    
    .layout-transition-loader {
        transition: opacity 0.1s ease;
    }
}

/* Small spinner variant for inline use */
.inline-spinner {
    display: inline-block;
    width: 1em;
    height: 1em;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
}

/* Component initialization skeleton */
.component-skeleton {
    background: var(--bg-secondary, #1e1e1e);
    border-radius: var(--border-radius, 0.5rem);
    position: relative;
    overflow: hidden;
}

.component-skeleton::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.03) 50%,
        transparent 100%);
    animation: skeleton-shimmer 2s infinite;
}

/* Progress bar for multi-step operations */
.loading-progress {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: 1rem;
    overflow: hidden;
    position: relative;
}

.loading-progress-bar {
    height: 100%;
    background: var(--primary-color, #fff);
    border-radius: 2px;
    transition: width 0.3s ease;
    position: relative;
}

.loading-progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%);
    animation: progress-shimmer 1s infinite;
}

@keyframes progress-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}