/* Performance Optimizations */
/* Improves page load speed and reduces lag */

/* ===================================
   1. LAZY LOADING IMAGES/VIDEOS
   =================================== */

/* Placeholder while loading */
img[loading="lazy"] {
    background: linear-gradient(90deg, #1a1a1a 25%, #2a2a2a 50%, #1a1a1a 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

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

/* ===================================
   2. OPTIMIZE ANIMATIONS
   =================================== */

/* Use GPU acceleration only for an explicit animation class. */
.animate-fadeIn {
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
}

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

/* Optimize Future mode animations */
.future .neon-glow,
.future .neon-border {
    will-change: box-shadow, text-shadow;
    transform: translateZ(0);
}

/* Limit animation complexity on mobile */
@media (max-width: 640px) {
    /* Disable complex animations on mobile */
    body.future::before {
        animation: none !important;
    }

    /* Simplify hover effects */
    .gallery-item:hover {
        transform: translateY(-4px) !important;
    }
}

/* ===================================
   3. DEBOUNCE RAPID INTERACTIONS
   =================================== */

/* Prevent double-click issues */
button,
a,
[role="button"] {
    user-select: none;
}

/* ===================================
   4. OPTIMIZE RENDERING
   =================================== */

/* Optimize text rendering */
body {
    text-rendering: optimizeSpeed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   5. REDUCE REPAINTS
   =================================== */

/* Optimize scrolling */
* {
    -webkit-overflow-scrolling: touch;
}

/* ===================================
   6. OPTIMIZE IMAGES
   =================================== */

/* Prevent layout shift */
img,
video {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Keep normal UI imagery smooth; scope crisp rendering to explicit pixel-art assets only. */
img {
    image-rendering: auto;
    -ms-interpolation-mode: bicubic;
}

.pixel-art,
img.pixel-art,
[data-rendering="pixel-art"] {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* ===================================
   7. REDUCE JAVASCRIPT BLOCKING
   =================================== */

/* Defer non-critical CSS */
@media print {
    /* Print styles won't block rendering */
}

/* ===================================
   8. OPTIMIZE GRID LAYOUTS
   =================================== */

/* Use CSS Grid efficiently */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    contain: layout;
}

@media (max-width: 640px) {
    .grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ===================================
   9. OPTIMIZE BACKDROP FILTERS
   =================================== */

/* Backdrop filters are expensive, optimize them */
header,
.modal,
[class*="backdrop-blur"] {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

@media (max-width: 640px) {
    /* Reduce blur on mobile for better performance */
    header,
    .modal,
    [class*="backdrop-blur"] {
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }
}

/* ===================================
   10. OPTIMIZE SHADOWS
   =================================== */

/* Box shadows are expensive, use sparingly */
.card,
.btn-main,
.btn-secondary {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Remove shadows on mobile for better performance */
@media (max-width: 640px) {
    .card:not(:hover),
    .btn-main:not(:active),
    .btn-secondary:not(:active) {
        box-shadow: none;
    }
}

.classic .avatar-dropdown-menu #connectBtn {
    box-shadow: none !important;
}

.future .avatar-dropdown-menu #connectBtn {
    box-shadow: 0 0 14px rgba(0, 245, 255, 0.28) !important;
}

/* ===================================
   12. OPTIMIZE FONTS
   =================================== */

/* Prevent font loading from blocking render */
@font-face {
    font-display: swap;
}