/* Classes de utilidade para acessibilidade */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Estilos para os carrosséis */
.carousel-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    background-color: #f5f5f5;
    contain: content;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.carousel-container:focus {
    outline: 3px solid #4a90e2;
    outline-offset: 2px;
}

.carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    display: none;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform, opacity;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    z-index: 1;
    contain: strict;
    background-color: #f9f9f9;
}

.carousel-slide:focus {
    outline: 3px solid #4a90e2;
    outline-offset: -3px;
    z-index: 5;
}

.carousel-slide.active {
    display: flex !important;
    opacity: 1;
    visibility: visible;
    z-index: 3;
    transform: translate3d(0, 0, 0);
    transition-delay: 0.1s;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: opacity 0.3s ease;
    background-color: #f0f0f0;
    will-change: opacity;
    backface-visibility: hidden;
}

.carousel-slide img[data-src] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.carousel-slide img.loaded {
    opacity: 1;
}

.carousel-slide .loading-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    z-index: 1;
}

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

/* Transições suaves entre slides */
.carousel-slide {
    transition: opacity 0.6s ease-in-out, visibility 0.6s;
}

/* Ajustes para responsividade */
@media (max-width: 639px) {
    .carousel-container {
        -webkit-overflow-scrolling: touch;
    }
    
    .carousel-slide {
        transition-duration: 0.5s;
    }
}