/**
 * Performance Optimization CSS
 * Emerge Ventures Website
 */

/* Critical CSS optimizations */
* {
    box-sizing: border-box;
}

/* Optimize font loading */
@font-display: swap;

/* Reduce layout shifts */
img {
    max-width: 100%;
    height: auto;
}

/* Lazy loading styles */
.lazy {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading-shimmer 1.5s infinite;
}

.lazy.loaded {
    opacity: 1;
    background: none;
    animation: none;
}

.lazy.error {
    opacity: 1;
    background: #ffebee;
    animation: none;
}

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

/* Optimize images for different screen sizes */
.responsive-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Preload critical images */
.critical-img {
    loading: eager;
}

/* Optimize carousel/slider images */
.slider-img {
    object-fit: cover;
    width: 100%;
    height: 100%;
}

/* Performance optimizations for animations */
.animate-optimized {
    will-change: transform, opacity;
    transform: translateZ(0);
}

/* Reduce paint and composite layers */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Optimize scrolling performance */
.smooth-scroll {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Optimize hover effects */
.hover-optimized {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hover-optimized:hover {
    transform: translateY(-2px);
}

/* Optimize grid layouts */
.grid-optimized {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

/* Optimize flexbox layouts */
.flex-optimized {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Critical above-the-fold optimizations */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Optimize button interactions */
.btn-optimized {
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    will-change: transform;
}

.btn-optimized:active {
    transform: scale(0.98);
}

/* Optimize form elements */
.form-optimized input,
.form-optimized textarea {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

/* Optimize critical path rendering */
.above-fold {
    contain: layout style paint;
}

/* Optimize below-fold content */
.below-fold {
    contain: layout style;
}

/* Media query optimizations */
@media (max-width: 768px) {
    .mobile-optimized {
        font-size: 14px;
        line-height: 1.4;
    }
    
    .grid-optimized {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1200px) {
    .desktop-optimized {
        max-width: 1200px;
        margin: 0 auto;
    }
}

/* Optimize print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    .print-optimized {
        color: black !important;
        background: white !important;
    }
}