:root {
    --font-colour: #0a0a0a;
    --background: #69d3f8;
    --background-accent: #7cdcff;
    --accent: #f6e03e;
}

body {
    font-family: "Inter", "Lucida Sans Regular", "Lucida Grande", "Lucida Sans Unicode", Geneva, Verdana, sans-serif;
    background-color: var(--background);
    font-weight: 400;
    font-size: 20px;
    color: var(--font-colour);
    position: relative;
    overflow: hidden;
}

/* Custom element here so we can rotate it */
body::before {
    content: "";
    position: fixed;
    top: 50%;
    left: 50%;
    width: 150vw;
    height: 150vh;
    background-color: var(--background);
    background-image:
        radial-gradient(circle, var(--background-accent) 25%, transparent 0%),
        radial-gradient(circle, var(--background-accent) 25%, transparent 0%);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    transform: translate(-50%, -50%) rotate(12deg);
    transform-origin: center;
    z-index: -1;
    pointer-events: none;
}

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

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

h1 {
    font-family: "Syne", "Lucidia Sans Regular";
    font-weight: 800;
    font-size: 50px;
    color: var(--font-colour);
    text-align: center;
    margin-bottom: 3rem;

    /* This just looks nice */
    user-select: none;

    transition: transform 160ms linear;
    -webkit-text-stroke: 1px var(--font-colour);
}

h1:hover {
    transform: translateY(-2px) rotate(var(--tilt, 0deg));
    transition: transform 160ms linear;
}

input {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;

    background: var(--accent);
    border: 3px solid var(--font-colour);
    box-shadow: inset 4px 4px 0 0 var(--accent),
        4px 4px 0 0 rgba(0, 0, 0, 1);
    color: var(--font-colour);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 700;
    padding: 0.5rem 0.5rem;
    margin-bottom: 0.5rem;
    border-radius: 0.25rem;
    outline: none;
    transition: transform 160ms linear, box-shadow 160ms linear;
    cursor: pointer;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    /* Hide because I don't want to make custom ones */
    appearance: none;
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    appearance: none;
    -moz-appearance: textfield;
}

input:hover,
input[type="number"]:focus {
    transform: translateY(-2px);
    box-shadow: inset 4px 4px 0 0 var(--accent),
        6px 6px 0 0 rgba(0, 0, 0, 1);
}

input[type="checkbox"] {
    width: 24px;
    height: 24px;
    display: inline-block;
    position: relative;

    /* Make this align with its label */
    vertical-align: middle;
}

input[type="checkbox"]::after {
    content: "";
    position: absolute;
    inset: 4px;
    background: var(--font-colour);
    opacity: 0;
    transition: opacity 120ms linear;
}

input[type="checkbox"]:checked::after {
    opacity: 1;
}

.content {
    position: relative;
    margin: auto;
    margin-bottom: 1rem;
    padding: 1rem;
    background-color: var(--accent);
    width: 70%;
    display: grid;
    border-radius: 0.5rem;
}

/* Less wide on desktop to make it less goofy */
@media only screen and (min-width: 1025px) {
    .content {
        width: 40%;
    }
}

.border {
    border: 3px solid var(--font-colour);
    box-shadow: inset 4px 4px 0 0 var(--accent),
        4px 4px 0 0 rgba(0, 0, 0, 1);

    transition: transform 160ms linear, box-shadow 160ms linear;
}

.border:hover {
    transform: translate(0px, -2px);
    transition: transform 160ms linear, box-shadow 160ms linear;
    box-shadow: inset 6px 6px 0 0 var(--accent),
        6px 6px 0 0 rgba(0, 0, 0, 1);
}