index.css

@import url("https://fonts.googleapis.com/css2?family=Inter+Tight:wght@900&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@300&display=swap");
@import url("https://cdn.jsdelivr.net/gh/tonsky/FiraCode@1.207/distr/fira_code.css");

html {
    scrollbar-width: none;
}

*::selection {
    background-color: #1b5754;
}

:root {
    --tab-size: 4;
    --color: #fff;
    caret-color: #fff;
}

body {
    background-color: #121212;
    font: 1.25rem "Source Sans Pro", sans-serif;
    line-height: 1.5;
    color: #fff;

    margin: 0px;
    overflow: hidden;
    height: 100vh;
    width: 100%;
    display: grid;
    grid-template-rows:max-content 1fr;
}

h1 {
    color: #fff;
    font: 3rem "Inter Tight", sans-serif;
}

h2 {
    color: #fff;
    font: 2.5rem "Inter Tight", sans-serif;
}

h3 {
    color: #fff;
    font: 2rem "Inter Tight", sans-serif;
}

h4 {
    color: #fff;
    font: 1.5rem "Inter Tight", sans-serif;
    margin: .3rem;
}

a {
    text-shadow: 0px 0px 5px #0070F3;
    text-decoration: none;
    color: #0070F3;
    transition: 200ms;
}

a:hover {
    text-shadow: 0px 0px 5px #3292FF;
    padding-left: 10px;
    padding-right: 10px;
    color: #3292FF;
}

p {
    color: #fff;
    margin: .3rem;
}

hr {
    border: none;
    border-top: 2px solid #202124;
    box-shadow: 0px 2px 10px #202124;
}

button {
    background-color: var(--color);
    color: #000;
    padding: 10px;
    border-radius: 7px;
    font-family: "Inter Tight", sans-serif;
    border: 2.5px solid var(--color);
    transition: 0.25s;
    cursor: pointer;
}

button:hover {
    color: #fff;
    background-color: transparent;
}

button:disabled {
    backdrop-filter: brightness(.5);
}

input[type="checkbox"] {
    accent-color: #fff;
    transition: 0.25s;
    width: .85rem;
    height: .85rem;
}

input[type="checkbox"]:checked {
    accent-color: #202124;
}

input[type="checkbox"]:hover {
    accent-color: var(--color);
}

.card input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
}

input[type="number"],
input[type="text"] {
    background-color: transparent;
    color: #fff;
    border: none;
    outline: none;
    appearance: textfield;
    font-size: 1rem;
    border-bottom: solid .125rem var(--color);
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: none;
}

#code_input {
    grid-area: c;
    background-color: #1d1d1d;
    margin: 2rem;
    margin-right: 0px;
}

#stdout {
    border-radius: .35rem;
    text-align: left;
    background-color: #1d1d1d;
    margin: 0rem 2rem 2rem 0;
    padding: .5rem;
    font: 1rem 'Fira Code', monospace;
    grid-area: o;
    overflow: auto;
    word-break: break-all;
    white-space: pre-wrap;
    tab-size: var(--tab-size);
}

#screen {
    grid-area: s;
    margin: 2rem 2rem 0 0;
    padding: calc(.5rem - 4px);
    image-rendering: crisp-edges;
    border: 2.5px solid #202124;
    border-radius: .35rem;
    min-width: 0;
    height: calc(100% - 2rem);
    justify-self: center;

}

nav {
    position: sticky;
    top: 0px;
    background-color: #202124;
    padding: 10px;
    text-align: center;
}

main {
    background-color: #121212;
    text-align: center;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 150px 1fr;
    grid-template-areas: "c s" "c o";
    margin: 0;
    gap: 2rem;
    justify-items: stretch;
    justify-content: stretch;
    overflow: hidden;
}


.section {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #121212;
    z-index: -999;
    pointer-events: none;
    transition: .25s;
    margin: 0;
    overflow-y: auto;
}

.section-seperater  {
    margin: 2rem;
    padding: 1rem;
    border-bottom: 1px solid #fff;
}


.card {
    background-color: #202124;
    margin: 2rem;
    padding: 1rem;
    border-radius: .25rem;
}

.card-title {
    display: flex;
    align-items: center;
}

.card-option {
    margin-left: auto;
}

.debug_only {
    display: none;
}

.red {
    --color: #E57474 !important;
}

.green {
    --color: #8CCf7E !important;
}

.blue {
    --color: #67b0e8 !important;
}

.yellow {
    --color: #E5C76B !important;
}

.magenta {
    --color: #C47FD5 !important;
}

span.white,
span.unknown,
span.left-square,
span.right-square,
span.comparison {
    color: #FFFFFF;
}

span.string,
span.char,
span.text {
    color: #e08f43;
}

span.port,
span.int,
span.relative {
    color: #8CCf7E;
}

span.memory {
    color: #79B1EB;
}

span.escape {
    color: #d8b542;
}

span.reg {
    color: #FFAB70;
}

span.name {
    color: #E57474;
}

span.macro {
    color: #d980f0;
}

span.label {
    color: #E5C76B;
}

span.comment {
    color: #579457;
}

span.error {
    color: #fc3319;
    font-weight: bold;
}

span.warning {
    color: #ffd23e;
    font-weight: bold;
}

span.info {
    color: #97e288;
    font-weight: bold;
}

span.error_line {
    color: #ffbd66;
}