:root {
    --text: #dde1fa;
    --background: #04091d;
    --primary: #8795ef;
    --secondary: #891516;
    --accent: #deb828;
}

*,
*::before,
*::after {
    font-family: 'Roboto Slab', sans-serif;
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--background);
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 120vh;
}

.text-center {
    text-align: center;
}

/* https://stackoverflow.com/questions/69430/is-there-a-way-to-make-text-unselectable-on-an-html-page */
.unselectable {
    -moz-user-select: -moz-none;
    -khtml-user-select: none;
    -webkit-user-select: none;

    /*
     Introduced in IE 10.
     See http://ie.microsoft.com/testdrive/HTML5/msUserSelect/
   */
    -ms-user-select: none;
    user-select: none;
}

header {
    flex: 0 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.accent {
    color: var(--accent)
}

h1 {
    font-size: 2rem;
    color: var(--text);
    /* top | right | bottom | left */
    margin: 0.5em 1.5em 0.4em 1.5em;
}

hr {
    background-color: var(--text);
    color: var(--text);
    width: 100%;
}

@media screen and (min-width: 788px) {
    hr {
        width: 80%;
        border-radius: 10px;
    }
}

main {
    flex: 1 1 auto;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
}

#results-div {
    color: var(--text);
    border: 8px solid var(--accent);
    border-radius: 100em;
    padding: 1.5em;
    font-size: 1.8em;
    background: transparent;
}

.error {
    color: red;
}

form {
    background-color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    padding: 2em;
    /* top | right | bottom | left */
    padding: 2em 2em 2em 2em;
}

/* https://stackoverflow.com/questions/63435359/animating-the-labels-on-input-focus-with-css-and-javascript */
#user-input {
    width: 100%;
    background-color: rgba(4, 9, 29, 0.2);
    border: none;
    border-bottom: 2px solid var(--background);
    border-radius: 2px;
    color: var(--background);
    font-size: 1.2rem;
    padding: 0.5rem;
    outline: none;
}

.input-label {
    position: relative;
    font-size: 1.1rem;
}

.label-span {
    position: absolute;
    top: 0;
    left: 1rem;
    transition: all 0.2s;
    pointer-events: none;
    color: rgba(4, 9, 29, 0.7);
}

#user-input:focus+.label-span,
#user-input.filled+.label-span {
    top: -1.9rem;
    left: 0.5rem;
    font-size: 0.9rem;
    color: var(--background);
}

.buttons {
    margin-top: 2em;
    display: flex;
    gap: 2em;
}

button {
    background-color: var(--accent);
    border: 1px solid var(--background);
    font-size: 1.2em;
    cursor: pointer;
    box-shadow: 3px 3px 10px rgb(148, 144, 144);
    transition: all 0.1s ease-in-out;
}

button:active {
    background-color: var(--background);
    color: var(--accent);
    transition: all 0.1s ease-in-out;
    transform: translateX(-2%);
    transform: translateY(2%);
    box-shadow: none;
}

.format-table {
    color: var(--text);
    font-size: 1.1rem;
    text-align: center;
    border: 1px solid var(--text);
    padding: 0 1em;
    /* https://stackoverflow.com/questions/1264187/css-how-do-i-create-a-gap-between-rows-in-a-table */
    border-collapse: separate;
    border-spacing: 0 0.5em;
    border-radius: 5px;
}

.format-table thead tr th{
    border-bottom: 1px solid var(--text);
    padding-bottom: 0.5em;
    color: var(--accent);
}

footer {
    flex: 0 1 auto;

    color: var(--text);
    font-size: 0.8rem;
    text-align: center;
}

.github-link {
    color: var(--accent);
    text-decoration: none;
}