img {
    background: #f5f5f5;
    transition: opacity 0.3s ease, filter 0.3s ease;
}

img.progressive-loading {
    opacity: 0;
    filter: blur(10px);
}

img.progressive-loaded {
    opacity: 1;
    filter: blur(0);
    animation: fadeIn 0.4s ease-in-out;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.blur-up {
    filter: blur(20px);
    transform: scale(1.05);
    transition: filter 0.5s, transform 0.5s;
}

.blur-up-loaded {
    filter: blur(0);
    transform: scale(1);
}

.progressive-image-wrapper {
    position: relative;
    overflow: hidden;
    background: linear-gradient(
        90deg,
        #f0f0f0 0px,
        #f8f8f8 40px,
        #f0f0f0 80px
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

.progressive-image-wrapper img {
    display: block;
    width: 100%;
    height: auto;
}

.progressive-image-wrapper.loaded {
    background: transparent;
    animation: none;
}

.image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 48px;
    opacity: 1;
    transition: opacity 0.3s;
    pointer-events: none;
}

.image-placeholder.hidden {
    opacity: 0;
}

.low-quality-placeholder {
    filter: blur(15px);
    transform: scale(1.1);
}

.high-quality-loaded {
    filter: blur(0);
    transform: scale(1);
    transition: filter 0.6s cubic-bezier(0.4, 0.0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0.0, 0.2, 1);
}

img[loading="lazy"] {
    content-visibility: auto;
}

.lazy-image-container {
    position: relative;
    background: #f5f5f5;
    min-height: 200px;
}

.lazy-image-container::before {
    content: '';
    display: block;
    padding-bottom: 120%;
}

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

@media (max-width: 768px) {
    img.progressive-loading {
        filter: blur(5px);
    }
}

@media (prefers-reduced-motion: reduce) {
    img,
    .blur-up,
    .progressive-image-wrapper {
        animation: none !important;
        transition: opacity 0.3s;
        filter: none !important;
        transform: none !important;
    }
}

noscript img {
    opacity: 1 !important;
    filter: none !important;
}