/**
 * Lazy Loading CSS
 * Görsel yüklenme efektleri ve optimizasyonlar
 */

/* Lazy loading görselleri için temel stil */
img.lazy {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

img.lazy.loaded {
    opacity: 1;
}

img.lazy.error {
    opacity: 0.5;
    filter: grayscale(100%);
}

/* Lazy loading placeholder (blur effect) */
img.lazy:not(.loaded) {
    filter: blur(5px);
    transform: scale(1.02);
}

/* Lazy background için */
.lazy-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.lazy-bg.loaded {
    opacity: 1;
}

/* Loading spinner için (opsiyonel) */
.lazy-wrapper {
    position: relative;
    overflow: hidden;
}

.lazy-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: lazy-spin 1s linear infinite;
    z-index: 1;
}

.lazy-wrapper img.loaded + .lazy-wrapper::before {
    display: none;
}

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

/* Skeleton loading effect (modern) */
.skeleton-img {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

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

/* Fade-in animasyonu */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-on-load {
    animation: fadeIn 0.6s ease-out;
}

/* Performans optimizasyonu */
img {
    will-change: opacity;
}

/* WebP desteği olmayan tarayıcılar için */
.no-webp img[data-src$=".webp"] {
    display: none;
}