/* ===== PERFORMANCE OPTIMIZATIONS ===== */

/* GPU acceleration for smooth animations */
.gpu-accelerated,
.hero-section,
.rv-card,
.earth-card,
.menu__item,
.marquee,
.btn-camper,
.navbar-collapse {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000;
    will-change: transform;
}

/* Optimize heavy animations for performance */
@media (prefers-reduced-motion: no-preference) {
    .smooth-transform {
        transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    
    .smooth-opacity {
        transition: opacity 0.3s ease-out;
    }
    
    .smooth-scale {
        transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
}

/* Efficient loading states */
.loading-shimmer {
    background: linear-gradient(90deg, 
        rgba(245, 241, 232, 0.1) 25%, 
        rgba(245, 241, 232, 0.3) 50%, 
        rgba(245, 241, 232, 0.1) 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite linear;
}

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

/* Optimize images for better loading */
.optimized-img {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    image-rendering: optimizeQuality;
    image-rendering: -webkit-optimize-contrast;
}

/* Lazy loading placeholder */
.img-placeholder {
    background: linear-gradient(135deg, var(--accent-color-5) 0%, var(--accent-color-6) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color-2);
    font-size: 1.2rem;
    min-height: 200px;
}

/* Efficient scroll animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Optimize marquee for performance */
.marquee-inner {
    animation-play-state: running;
    animation-fill-mode: both;
}

/* Pause expensive animations when not visible */
@media (prefers-reduced-motion: reduce) {
    .marquee-inner {
        animation-play-state: paused;
    }
    
    .loading-shimmer {
        animation: none;
        background: rgba(245, 241, 232, 0.2);
    }
}

/* Efficient critical CSS inlining */
.critical-above-fold {
    font-display: swap;
    contain: layout style paint;
}

/* Optimize expensive box-shadows */
.optimized-shadow {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.optimized-shadow:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Memory-efficient gradients */
.efficient-gradient {
    background-image: var(--cached-gradient);
}

:root {
    --cached-gradient: linear-gradient(135deg, var(--forest-green) 0%, var(--river-blue) 100%);
}

/* Optimize form rendering */
.optimized-form input,
.optimized-form textarea,
.optimized-form select {
    contain: layout style;
    font-feature-settings: "kern" 1;
    text-rendering: optimizeSpeed;
}

/* Efficient layout containment */
.layout-contained {
    contain: layout;
}

.style-contained {
    contain: style;
}

.paint-contained {
    contain: paint;
}

/* Preload critical resources */
.preload-fonts {
    font-display: swap;
    font-feature-settings: "kern" 1, "liga" 1;
}

/* Optimize expensive transforms */
.efficient-transform {
    transform: translateZ(0) scale(1);
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.efficient-transform:hover {
    transform: translateZ(0) scale(1.05);
}

/* Memory-efficient animations */
@keyframes efficient-fadeIn {
    from { 
        opacity: 0; 
        transform: translate3d(0, 20px, 0); 
    }
    to { 
        opacity: 1; 
        transform: translate3d(0, 0, 0); 
    }
}

.efficient-fadeIn {
    animation: efficient-fadeIn 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

/* Optimize critical rendering path */
.above-fold {
    contain: layout style paint;
    content-visibility: auto;
    contain-intrinsic-size: 0 400px;
}

/* Efficient loading indicators */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(245, 241, 232, 0.3);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    will-change: transform;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Optimize for 60fps animations */
.sixty-fps {
    animation-duration: 0.5s;
    animation-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    animation-fill-mode: both;
}

/* Memory and CPU optimizations */
.optimized-card {
    contain: layout style;
    will-change: transform, opacity;
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Efficient hover states */
.efficient-hover {
    position: relative;
    overflow: hidden;
}

.efficient-hover::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.efficient-hover:hover::before {
    left: 100%;
}

/* Optimize for different screen densities */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .high-dpi-optimized {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Efficient CSS Grid layouts */
.optimized-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    contain: layout;
}

/* Battery-conscious animations */
@media (prefers-reduced-motion: reduce) {
    .battery-conscious {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Optimize expensive filters */
.optimized-blur {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    will-change: backdrop-filter;
}

/* Efficient viewport-based animations */
@supports (animation-timeline: view()) {
    .viewport-animation {
        animation-timeline: view();
        animation-range: entry 0% cover 50%;
    }
}