/* Crane Intelligence - Performance Optimizations */

/* Critical CSS for above-the-fold content */
.hero-section {
    contain: layout style paint;
}

.header-container {
    contain: layout style;
}

/* Image optimization */
img {
    max-width: 100%;
    height: auto;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Lazy loading for images */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* GPU acceleration for animations */
.btn, .nav-link, .mobile-menu-toggle {
    will-change: transform;
    transform: translateZ(0);
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus management for accessibility */
*:focus {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
}

/* Skip link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--accent-green);
    color: var(--primary-charcoal);
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
}

.skip-link:focus {
    top: 6px;
}

/* Print optimizations */
@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .header-container,
    .mobile-menu,
    .footer {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
        padding: 0 !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #FFFFFF;
        --text-secondary: #FFFFFF;
        --border-color: #FFFFFF;
        --accent-green: #00FF00;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #FFFFFF;
        --text-secondary: #B0B0B0;
        --background: #0F0F0F;
    }
}

/* Light mode support */
@media (prefers-color-scheme: light) {
    :root {
        --text-primary: #000000;
        --text-secondary: #666666;
        --background: #FFFFFF;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .nav-link:hover {
        background-color: transparent;
    }
}

/* Landscape orientation optimizations */
@media (orientation: landscape) and (max-height: 500px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Portrait orientation optimizations */
@media (orientation: portrait) {
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Critical resource hints */
.link-preload {
    rel: preload;
    as: style;
}

/* Font display optimization */
@font-face {
    font-family: 'Inter';
    font-display: swap;
}

/* Container queries for modern browsers */
@supports (container-type: inline-size) {
    .responsive-container {
        container-type: inline-size;
    }
    
    @container (min-width: 768px) {
        .responsive-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
}

/* Fallbacks for older browsers */
@supports not (display: grid) {
    .features-grid {
        display: flex;
        flex-wrap: wrap;
    }
    
    .feature-card {
        flex: 1 1 300px;
        margin: 10px;
    }
}

/* Performance monitoring */
.performance-observer {
    position: fixed;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px;
    border-radius: 4px;
    font-size: 12px;
    z-index: 1000;
    display: none;
}

.performance-observer.show {
    display: block;
}