/**
 * WP Performance Optimizer - Frontend Styles
 * Version: 2.1.4
 * Author: Performance Solutions Inc.
 */

/* Performance optimization styles */
.wppo-optimized {
    will-change: transform;
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Lazy loading placeholder */
.wppo-lazy-placeholder {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: wppo-loading 1.5s infinite;
    border-radius: 4px;
}

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

/* Performance indicator (hidden by default) */
.wppo-perf-indicator {
    position: fixed;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 11px;
    z-index: 999999;
    display: none;
}

.wppo-perf-indicator.show {
    display: block;
}

/* Cache warming indicator */
.wppo-cache-warming {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: #667eea;
    color: white;
    padding: 10px 15px;
    border-radius: 6px;
    font-size: 12px;
    z-index: 999999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.wppo-cache-warming.show {
    opacity: 1;
    transform: translateY(0);
}

/* Performance metrics overlay (debug mode) */
.wppo-debug-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 20px;
    z-index: 999999;
    display: none;
    overflow-y: auto;
}

.wppo-debug-overlay.show {
    display: block;
}

.wppo-debug-content {
    max-width: 800px;
    margin: 0 auto;
    background: #333;
    padding: 20px;
    border-radius: 8px;
}

.wppo-debug-title {
    font-size: 18px;
    margin-bottom: 15px;
    color: #667eea;
}

.wppo-debug-metric {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #555;
}

.wppo-debug-metric:last-child {
    border-bottom: none;
}

.wppo-debug-label {
    color: #ccc;
}

.wppo-debug-value {
    color: #46b450;
    font-weight: bold;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .wppo-perf-indicator {
        top: 5px;
        right: 5px;
        font-size: 10px;
        padding: 3px 6px;
    }
    
    .wppo-cache-warming {
        bottom: 10px;
        left: 10px;
        font-size: 11px;
        padding: 8px 12px;
    }
}

/* Print optimizations */
@media print {
    .wppo-perf-indicator,
    .wppo-cache-warming,
    .wppo-debug-overlay {
        display: none !important;
    }
}