:root {
    --light-blue: hsla(179, 100%, 75%, 1);
    --light-blue-seethru: hsla(179, 100%, 75%, 0.1);
    --matrix-green: hsla(125, 100%, 50%, 1);
    --matrix-green-seethru: hsla(125, 100%, 50%, 0.1);
    --inner-background: hsla(0, 0%, 0%, 0.8);
    --error-red: hsla(360, 100%, 45%, 1);
    --error-red-seethru: hsla(360, 100%, 45%, 0.1);
    --converter-size: 20px;
    --main-size: 18px;
    --focus-size: 22px;
    --focus2-size: 26px;
    --focus3-size: 30px;
    --focus4-size: 40px;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: var(--main-size);
    color: whitesmoke;
    background-image: url("https://i.imgur.com/aUxo0Pb.jpg");
    background-size: cover;
}

h1 {
    color: var(--light-blue);
    text-align: center;
}

h2 {
    color: var(--light-blue);
    font-size: var(--focus2-size);
}

#inner-container {
    padding: 2rem;
    background-color: var(--inner-background);
    width: 60%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

#acc-digits {
    margin-bottom: 0.1rem;
}

#digits {
    margin-top: 0.1rem;
    color: var(--light-blue);
    font-size: var(--focus3-size);
}

#intro {
    width: 85%;
}

#converter p {
    margin-top: 0.1rem;
}

#converter {
    width: 80%;
    max-width: 30rem;
    font-size: var(--converter-size);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    align-self: center;
    border: 2px solid var(--light-blue);
    border-radius: 1rem;
    padding: 0.5rem;
}

select {
    border: 2px solid var(--light-blue);
    border-radius: 1rem;
    background-color: var(--light-blue-seethru);
    color: var(--light-blue);
    text-align: center;
    font-size: var(--focus-size);
}

select option {
    background-color: black;
    border: 1px solid var(--light-blue);
}

input {
    margin-top: 0.5rem;
    width: 100%;
    padding: 10px;
    border: 2px solid var(--light-blue);
    border-radius: 1rem;
    background-color: var(--light-blue-seethru);
    color: var(--light-blue);
    text-align: center;
    font-size: var(--focus2-size);
}

#caps-warning {
    color: var(--light-blue);
}

button {
    width: 100%;
    border: 2px solid var(--light-blue);
    border-radius: 1rem;
    background-color: var(--light-blue-seethru);
    color: var(--light-blue);
    padding: 10px;
    transition: all 0.5s;
    cursor: pointer;
    font-size: var(--focus3-size);
    margin-top: 0.5rem;
}

button span {
    cursor: pointer;
    display: inline-block;
    position: relative;
    transition: 0.6s;
}

button span:after {
    content: "\00bb";
    position: absolute;
    opacity: 0;
    top: 0;
    right: -20px;
    transition: 0.6s;
}

button:hover span {
    padding-right: 25px;
}

button:hover span:after {
    opacity: 1;
    right: 0;
}

#result {
    text-align: center;
    margin: 0;
    max-width: 100%;
}

#input-button-container {
    width: 60%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#resultBox {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem;
    border: 2px solid black;
    border-radius: 1rem;
    background-color: hsla(0, 0%, 0%, 0);
    width: 80%;
    min-height: 5rem;
    height: fit-content;
}

@media (max-width: 850px) {
    #inner-container {
        width: 95%;
        min-width: none;
    }
    #intro {
        width: 95%;
        min-width: none;
    }
}