:root {
    --purple: #854dff;
    --red: #ff5757;
    --white: #ffffff;
    --gray-light: #f0f0f0;
    --gray-medium: #dbdbdb;
    --gray-dark: #716f6f;
    --black: #000000;
}

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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    width: 100%;
    height: 100vh;
    background-color: var(--gray-light);
    font-family: 'Popins', sans-serif;
}

#calculator {
    width: 55%;
    background-color: var(--white);
    padding: 25px;
    border-radius: 15px;
    border-bottom-right-radius: 100px;
}

#inputs {
    display: flex;
    gap: 15px;
}

.input {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
}

.input .title {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-dark);
}

.input input {
    width: 140px;
    font-size: 22px;
    font-weight: 400;
    padding: 10px 15px;
    outline: none;
    border: 1px var(--gray-dark) solid;
    border-radius: 10px;
}

.input .err {
    color: var(--red);
    font-size: 15px;
    height: 15px;
}

#line {
    display: flex;
    align-items: center;
    justify-content: center;
}

#line .line {
    width: 85%;
    height: 1px;
    background-color: var(--gray-medium);
}

#line .arrow {
    background-color: var(--purple);
    padding: 15px;
    border-radius: 100px;
    cursor: pointer;
}

#info {
    line-height: 80px;
}

#info h1 {
    font-size: 80px;
    font-weight: 900;
    font-style: italic;
    display: flex;
    gap: 10px;
}

#info .info {
    color: var(--purple);
}

.attribution {
    font-size: 18px;
    margin: 15px 0px;
    display: flex;
    gap: 5px;
}

.attribution a {
    color: var(--purple);
}

@media (max-width: 1024px) {
    #calculator {
        width: 70%;
    }

    #line .arrow {
        padding: 10px;
    }
}

@media (max-width: 768px) {
    #calculator {
        width: 80%;
    }

    .input input {
        width: 100px;
    }

    #info h1 {
        font-size: 65px;
    }

    .attribution {
        flex-direction: column;
        align-items: center;
    }

    #inputs {
        margin-bottom: 32px;
    }

    .input .err {
        font-size: 14px;
    }
}

@media (max-width: 460px) {
    #calculator {
        width: 90%;
    }
}