:root {
    --radius: 18px;
    --shadow: 0 10px 30px rgba(0, 0, 0, .2);
    --dot: 16px;
}

.slider {
    max-width: 500px;
    margin: 0 auto;
    display: grid;
    align-content: center;
    gap: 20px;
}

/* “cartão” com bordas arredondadas, como na imagem */
.viewport {
    position: relative;
    overflow: hidden;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .2);
    /* mantém proporção responsiva */
    height: clamp(260px, 40vw, 520px);
}

/* trilho horizontal */
.track {
    display: flex;
    height: 100%;
    transition: transform .4s ease;
    will-change: transform;
}

/* cada slide ocupa 100% da janela */
.slide {
    margin: 0;
    flex: 0 0 100%;
    height: 100%;
    justify-content: center;
    display: flex;
}

.slide img {
    height: 100%;
    object-fit: cover;
    display: flex;
    justify-content: center;
}

/* setas dentro da imagem */
.arrow {
    position: absolute;
    top: 50%;
    translate: 0 -50%;
    width: 44px;
    height: 44px;
    border: 0;
    background: #002F5D;
    box-shadow: var(--shadow);
    display: grid;
    place-items: center;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    color: #fff;
}

.arrow:hover {
    background: #fff;
    color: #002F5D;
}

.arrow:active {
    scale: .98;
}

.prev {
    left: 0;
    border-radius: 0 50% 50% 0;
}

.next {
    right: 0;
    border-radius: 50% 0 0 50%;
}

/* bolinhas */
.dots {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.dots button {
    width: var(--dot);
    height: var(--dot);
    border-radius: 50%;
    border: 0;
    background: #cfd8dc;
    cursor: pointer;
    padding: 0;
}

.dots button[aria-current="true"] {
    background: #fff;
}

/* foco visível p/ acessibilidade */
.arrow:focus-visible,
.dots button:focus-visible {
    outline: 3px solid #ffcc00;
    outline-offset: 3px;
}

@media (max-width: 1000px) {
    .slider {
        gap: 15px;
    }
}

@media (max-width: 800px) {
    .viewport {
        box-shadow: none;
    }

    .arrow {
        color: #002F5D;
        background: #fff;
    }

    .next,
    .prev {
        border-radius: 50%;
    }
}

@media (max-width: 500px) {
    .arrow {
        width: 30px;
        height: 30px;
        display: flex;
        justify-content: center;
        align-items: end;
    }
}