:root{
    --color-off-white:hsl(0, 0%, 94%);
    --color-white: hsl(0, 0%, 100%);
    --color-light-gray: hsl(0, 0%, 86%);
    --color-purple: hsl(259, 100%, 65%);
    --color-light-red: hsl(0, 100%, 67%);
    --color-smokey-gray:hsl(0, 1%, 44%);
    --color-off-black: hsl(0, 0%, 8%);
    --font-principal:"Poppins",sans-serif;
}

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

main{
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--color-off-white);
}

.hide{
    display: none;
}

.container-data{
    background-color: var(--color-white);
    width: 50rem;
    height: 38rem;
    border-radius: 1.5rem 1.5rem 10rem 1.5rem;
    padding-left: 3rem;
}

.fill-data{
    display: flex;
    flex-direction: row;
    justify-content:flex-start;
    gap: 3rem;
    margin-top: 3rem;
}

.item-date{
    display: flex;
    flex-direction: column;
    align-items:flex-start;
}

.fill-data label{
    font-family: var(--font-principal);
    color: var(--color-smokey-gray);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: .2rem;
    font-weight: 700;
    margin-bottom: .5rem;
}

.fill-data input {
    width: 9rem;
    height: 4rem;
    border-radius: 0.5rem;
    border: .1rem solid var(--color-light-gray);
    font-family: var(--font-principal);
    font-size: 2rem;
    font-weight: 700;
    padding-left: 1rem;
}

.fill-data input.error {
    border-color: var(--color-light-red);
} 

.fill-data label.error {
    color: var(--color-light-red);
}

.fill-data span.error {
    font-family: var(--font-principal);
    color: var(--color-light-red);
    font-size: .8rem;
    font-style: italic;
    margin-top: .5rem;
    font-weight: 400;
}

input, button{
    cursor: pointer;
}

.fill-data input:hover{
    border-color: var(--color-purple);
}

.fill-data input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.btn-divider{
    display: flex;
    flex-direction: row;
    align-items: center;
}

.btn-divider hr{
    width: 38rem;
    border: .1rem solid var(--color-light-gray);
}

.btn-calculate{
    background-color:var(--color-purple);
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    border: none;
}

.btn-calculate:hover{
    background-color: var(--color-off-black);
}

.btn-calculate img{
    width: 2.5rem;
}

.age-result{
    font-family: var(--font-principal);
    font-style: italic;
    font-size: 5rem;
    font-weight: 900;
    color: var(--color-off-black);
}

.age-result span{
    color: var(--color-purple);
}

.attribution{
    margin-top: 3rem;
    font-family: var(--font-principal);
    font-size: .8rem;
}

@media (max-width: 600px) {

    .container-data{
        width: 21rem;
        height: 32rem;
        border-radius: 1.5rem 1.5rem 5rem 1.5rem;
        padding: 0 1rem 0 1rem;
    }

    .fill-data input {
        width: 5.5rem;
        height: 3rem;
        font-size: 1.3rem;
        padding-left: 0.5rem;
    }

    .age-result{
        font-size: 3rem;
        font-weight: 900;
        margin-top: 3rem;
    }

    .fill-data{
        gap: 1rem;
    }

    .btn-divider{
        margin-top: 4rem; 
    }

    .btn-divider hr{
        width: 20rem;
        position: relative;
    }

    .btn-calculate{
        width: 4rem;
        height: 4rem;
        position: absolute;
        left: 42%;
    }

    .btn-calculate img{
        width: 1.7rem;
    }
    
    .attribution{
        font-size: 0.7rem;
        text-align: center;
    }
  }