/* ========================================
   Lazy Loading Styles
   ======================================== */

/* Lazy Image States */
img.lazy-image {
    opacity: 1;
    transition: opacity 0.3s ease;
}

img.lazy-image.loading {
    opacity: 0.6;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

img.lazy-image.loaded {
    opacity: 1;
}

/* Lazy Section States */
.lazy-section {
    opacity: 0;
    transform: translateY(20px);
    transition:
        opacity 0.5s ease,
        transform 0.5s ease;
}

.lazy-section.loading {
    opacity: 0.5;
}

.lazy-section.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Shimmer Animation for Loading Images */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Skeleton Loading for Sections */
.lazy-section.loading::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    pointer-events: none;
    z-index: 1;
}

/* Blur-up effect for images */
img[data-src] {
    filter: blur(5px);
    transition: filter 0.3s ease;
}

img[data-src].loaded {
    filter: blur(0);
}

/* Prevent layout shift */
img.lazy-image {
    /* min-height: 100px;
    background-color: #f5f5f5; */
}

/* Responsive image placeholder */
.lazy-image-wrapper {
    position: relative;
    overflow: hidden;
    background-color: #f5f5f5;
}

.lazy-image-wrapper::before {
    content: "";
    display: block;
    padding-top: 56.25%; /* 16:9 aspect ratio, adjust as needed */
}

.lazy-image-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Loading spinner for sections */
.lazy-section.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--color-2, #3498db);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 2;
}

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

/* Hide spinner when loaded */
.lazy-section.loaded::after {
    display: none;
}

/* Optimize for reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    img.lazy-image,
    .lazy-section {
        transition: none;
        animation: none;
    }

    img[data-src] {
        filter: none;
    }
}

/* Performance optimization: will-change */
.lazy-section.loading {
    will-change: opacity, transform;
}

img.lazy-image.loading {
    will-change: opacity;
}

/* Remove will-change after loading */
.lazy-section.loaded,
img.lazy-image.loaded {
    will-change: auto;
}