/* 性能优化CSS */

/* 启用硬件加速 */
.hero-section,
.card,
.navbar,
.particles-container {
    transform: translateZ(0);
    will-change: transform;
}

/* 优化动画性能 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-visible {
    opacity: 1;
    transform: translateY(0);
}

/* 减少重绘的悬停效果 */
.card:hover {
    transform: translateY(-5px) translateZ(0);
    transition: transform 0.3s ease;
}

/* 优化图片加载 */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* 粒子容器优化 */
.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* 减少布局抖动 */
.hero-section {
    min-height: 400px;
}

/* 优化字体渲染 */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* 预加载关键资源 */
.preload-critical {
    font-display: swap;
}

/* 减少CSS选择器复杂度 */
.region-card,
.product-item,
.featured-product {
    contain: layout style paint;
}

/* 优化滚动性能 */
.main-navbar {
    contain: layout style paint;
    transform: translateZ(0);
}

/* 延迟加载图片的占位符 */
.lazy-placeholder {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* 减少重排的响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        min-height: 300px;
    }
}