* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

:root {
    --color-brand-color: #9333ea;
    --color-brand-color-light: #a855f7;
    --color-brand-color-lighter: #c084fc;
    --color-text-color-primary: #f9fafb;
    --color-text-color-secondary: #e4e4e7;
    --color-text-button-color: #a1a1aa;
    --color-stroke-color: #3f3f46;
    --color-surface-color: #18181b;
    --color-background-color: #09090b;
    font-family: 'Inter', sans-serif;
    font-size: 62.5%;
}

body {
    font-size: 1.6rem;
    background-color: #1c1c23;
    color: var(--color-text-color-primary);
}

#app {
    height: 100vh;
    max-width: 42.8rem;
    margin-left: auto;
    background-color: var(--color-surface-color);
    display: grid;
    /* distribuir cada elemento */
    grid-template-rows: max-content 1fr max-content;

    /* centralizado ao meio */
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

header {
    font-size: 2rem;
    color: var(--color-text-color-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-stroke-color);
    padding: 2.4rem 3.2rem;
}

main {
    padding: 3.2rem;
    display: grid;
    place-content: start;
    gap: 4.8rem;
    overflow-y: scroll;
    /* barra de rolagem */
}

.title {
    margin: auto;
}

::-webkit-scrollbar {
    width: .6rem;
}

::-webkit-scrollbar-thumb {
    /* barrinha de rolagem com a cor cinza */
    background-color: var(--color-stroke-color);
    border-radius: .8rem;
}

::-webkit-scrollbar-track {
    background-color: var(--color-background-color);
}

.products {
    display: flex;
    gap: 2.4rem;
}

.products img {
    width: 10.4rem;
    height: 10.4rem;
    object-fit: cover;
    border-radius: .8rem;
}

.products .title {
    color: var(--color-text-color-secondary);
}

.preco-quant {
    margin-top: 1.6rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.preco {
    font-weight: 700;
}

.quantidade {
    display: flex;
    align-items: center;
}

.quantidade span,
.quantidade button {
    width: 4rem;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
}

.quantidade button {
    border-radius: .8rem;
    border: 1px solid white;
    background-color: transparent;
    color: var(--color-brand-color-light);
    font-size: 1.6rem;
}

.quantidade button.add {
    border-color: var(--color-brand-color-light);
}

.quantidade button.add:hover {
    background-color: var(--color-brand-color-light);
    color: var(--color-text-color-primary);
}

.quantidade button.submit {
    border-color: var(--color-stroke-color);
}

.quantidade button.submit:hover {
    color: var(--color-text-color-primary);
    border-color: var(--color-brand-color-light);
}

footer {
    padding: 3.2rem;
    border-top: 1px solid var(--color-stroke-color);
}

.total {
    display: flex;
    justify-content: space-between;
    font-size: 2rem;
}

.cupom {
    margin-top: 1.6rem;
    color: var(--color-brand-color-light);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: .8rem;
}

.cupom i {
    font-size: 2rem;
}

footer button {
    margin-top: 3.2rem;
    background-color: var(--color-brand-color);
    color: var(--color-text-color-primary);
    border: 0;
    font-size: 2rem;
    padding-block: 2rem;
    width: 100%;
    border-radius: .8rem;
}

footer button:hover {
    background-color: var(--color-brand-color-light);
}



@media (max-width: 600px) {
    :root {
        font-size: 50%;
    }

    #app {
        max-width: 100%;
        height: auto;
        position: static;
        transform: none;
    }

    header {
        font-size: 1.6rem;
        padding: 1.6rem;
    }

    main {
        padding: 1.6rem;
    }

    .products {
        flex-direction: column;
    }

    .products img {
        width: 100%;
        height: auto;
    }

    .preco-quant {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }

    .quantidade span,
    .quantidade button {
        width: 3rem;
        height: 3rem;
        font-size: 1.2rem;
    }

    footer {
        padding: 1.6rem;
    }

    .total {
        flex-direction: column;
        align-items: flex-start;
    }
}