/**
 * Styles pour le système de lazy loading
 * Chatteurs.com - Optimisation performance
 */

/* États de base */
.lazy-img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Placeholder pendant chargement */
.lazy-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: lazy-shimmer 1.5s infinite;
    min-height: 100px;
    display: block;
}

/* Animation de shimmer */
@keyframes lazy-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Apparition en fondu */
.lazy-loaded {
    animation: lazy-fade-in 0.3s ease-in-out;
}

@keyframes lazy-fade-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Images critiques */
.lazy-critical {
    z-index: 1000;
    /* Chargement prioritaire */
}

/* Erreurs de chargement */
.lazy-error {
    background: #ffebee;
    border: 2px dashed #f44336;
    color: #c62828;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    font-size: 14px;
    text-align: center;
}

/* Backgrounds lazy */
.lazy-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: background-image 0.3s ease;
}

.lazy-bg.lazy-loading {
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 50%, #f5f5f5 100%);
}

/* Optimisations mobile */
@media (max-width: 768px) {
    .lazy-img {
        border-radius: 4px;
    }
    
    .lazy-loading {
        min-height: 80px;
    }
}

/* Mode sombre */
@media (prefers-color-scheme: dark) {
    .lazy-loading {
        background: linear-gradient(90deg, #2a2a2a 25%, #1a1a1a 50%, #2a2a2a 75%);
    }
    
    .lazy-error {
        background: #2d1b1b;
        border-color: #cc5555;
        color: #ff8888;
    }
}

/* Réduction des animations si demandée */
@media (prefers-reduced-motion: reduce) {
    .lazy-loading,
    .lazy-loaded {
        animation: none;
    }
    
    .lazy-loaded {
        transition: opacity 0.1s;
    }
}