*,
*:after,
*:before {
    box-sizing: border-box;
}

:root {
    --slide-ease: cubic-bezier(.4, -0.3, .6, 1.3);
    /*   --slide-ease: cubic-bezier(.8,-0.3,.2,1.3); */
    --easing: var(--slide-ease);
    --speed: 0.5s;
    --width: clamp(200px, 45vmin, 500px);
    --ar: 8 / 3;
    --ray: hsl(0 0% 100% / 0.5);
    --sun: hsl(47, 91%, 58%);
    --moon: hsl(212, 13%, 82%);
    --crater: hsl(221, 16%, 68%);
    --bg: hsl(219, 30%, 88%);
    --bear-speed: 10s;
    --color: hsl(219 30% 20%);
}

html {
    color-scheme: light only;
}

[data-dark-mode=true] {
    --bg: hsl(219, 30%, 12%);
    --color: hsl(219 30% 98%);
    color-scheme: dark only;
}

body {
    display: grid;
    place-items: center;
    min-height: 100vh;
    overflow: hidden;
    background: var(--bg);
    transition: background var(--speed) var(--easing);
    font-family: sans-serif, system-ui;
}

.toggle__backdrop:first-of-type .clouds path:first-of-type {
    fill: var(--ray);
}

.toggle {
    -webkit-tap-highlight-color: transparent;
    width: var(--width);
    /* random attempts at tackling the overflow iOS issue */
    z-index: 10;
    will-change: transform;
    isolation: isolate;
    transform: translate3d(0, 0, 0);
    /* End of workaround city   */
    aspect-ratio: var(--ar);
    border-radius: 100vh;
    border: 0;
    position: relative;
    padding: 0;
    overflow: hidden;
    cursor: pointer;
    transition: background var(--speed) var(--easing);
    --sky: hsl(204, 53%, 47%);
    --night: hsl(229, 25%, 16%);
    outline-color: transparent;
    background: hsl(calc(204 + (var(--dark, 0) * 25)) calc((53 - (var(--dark, 0) * 28)) * 1%) calc((47 - (var(--dark, 0) * 31)) * 1%));
    box-shadow:
        calc(var(--width) * 0) calc(var(--width) * 0.02) calc(var(--width) * 0.01) calc(var(--width) * -0.0025) hsl(210 10% 100% / 0.95),
        calc(var(--width) * 0) calc(var(--width) * -0.02) calc(var(--width) * 0.01) calc(var(--width) * -0.0025) hsl(210 10% 10% / 0.2),
        calc(var(--width) * 0) calc(var(--width) * 0.02) calc(var(--width) * 0.5) 0 hsl(210 10% 100% / 0.15);
}

.toggle:after {
    content: "";
    position: absolute;
    inset: 0;
    box-shadow:
        calc(var(--width) * 0) calc(var(--width) * -0.025) calc(var(--width) * 0.025) 0 hsl(210 10% 10% / 0.15) inset,
        calc(var(--width) * 0) calc(var(--width) * 0.025) calc(var(--width) * 0.025) 0 hsl(210 10% 10% / 0.65) inset;
    border-radius: 100vh;
}

.toggle__content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    border-radius: 100vh;
    display: block;
    clip-path: inset(0 0 0 0 round 100vh);
    container-type: inline-size;
}

.toggle__backdrop {
    overflow: visible !important;
    position: absolute;
    bottom: 0;
    width: 100%;
    left: 0;
    transition: translate var(--speed) var(--easing);
    translate: 0 calc(var(--dark, 0) * (100% - (3 / 8 * var(--width))));
}

[aria-pressed=false] .toggle__backdrop:last-of-type {
    transition-timing-function: cubic-bezier(.2, -0.6, .7, 1.6);
}

[aria-pressed=false] .stars path {
    transition-delay: 0s;
}

.stars path {
    transform-box: fill-box;
    transform-origin: 25% 50%;
    scale: calc(0.25 + (var(--dark, 0) * 0.75));
    transition: scale var(--speed) calc(var(--speed) * 0.5) var(--easing);
}

.toggle__indicator {
    height: 100%;
    aspect-ratio: 1;
    border-radius: 0%;
    display: grid;
    place-items: center;
    padding: 3%;
    transition: translate var(--speed) var(--slide-ease);
    translate: calc(var(--dark, 0) * (100cqi - 100%)) 0;
}

.pilot-bear {
    position: absolute;
    width: 25%;
}

.toggle__star {
    height: 100%;
    aspect-ratio: 1;
    border-radius: 50%;
    position: relative;
    transition: translate var(--speed) var(--easing);
    translate: calc((var(--dark, 0) * -10%) + 5%) 0;
    /* 	translate: calc((var(--dark, 0) * -18%) + 5%) 0; */
}

.sun {
    background: var(--sun);
    position: absolute;
    inset: 0;
    border-radius: 50%;
    overflow: hidden;
    box-shadow:
        calc(var(--width) * 0.01) calc(var(--width) * 0.01) calc(var(--width) * 0.02) 0 hsl(210 10% 100% / 0.95) inset,
        calc(var(--width) * -0.01) calc(var(--width) * -0.01) calc(var(--width) * 0.02) 0 hsl(210 10% 20% / 0.5) inset;
}

.moon {
    position: absolute;
    inset: -1%;
    border-radius: 50%;
    background: var(--moon);
    transition: translate var(--speed) ease-in-out;
    translate: calc((100 - (var(--dark, 0) * 100)) * 1%) 0%;
    box-shadow:
        calc(var(--width) * 0.01) calc(var(--width) * 0.01) calc(var(--width) * 0.02) 0 hsl(210 10% 100% / 0.95) inset,
        calc(var(--width) * -0.01) calc(var(--width) * -0.01) calc(var(--width) * 0.02) 0 hsl(210 10% 10% / 0.95) inset;
}

.moon__crater {
    position: absolute;
    background: var(--crater);
    border-radius: 50%;
    width: calc(var(--size, 10) * 1%);
    aspect-ratio: 1;
    left: calc(var(--x) * 1%);
    top: calc(var(--y) * 1%);
    box-shadow:
        calc(var(--width) * 0.01) calc(var(--width) * 0.01) calc(var(--width) * 0.01) 0 hsl(210 10% 6% / 0.25) inset,
        0 calc(var(--width) * 0.005) calc(var(--width) * 0.01) 0 hsl(210 10% 100% / 0.25);
}

.moon__crater:nth-of-type(1) {
    --size: 18;
    --x: 40;
    --y: 15;
}

.moon__crater:nth-of-type(2) {
    --size: 20;
    --x: 65;
    --y: 58;
}

.moon__crater:nth-of-type(3) {
    --size: 34;
    --x: 18;
    --y: 40;
}

.toggle__star:before {
    content: "";
    z-index: -1;
    width: 356%;
    background:
        radial-gradient(hsl(0 0% 100% / 0.25) 40%, transparent 40.5%),
        radial-gradient(hsl(0 0% 100% / 0.25) 56%, transparent 56.5%) hsl(0 0% 100% / 0.25);
    border-radius: 50%;
    aspect-ratio: 1;
    position: absolute;
    top: 50%;
    left: 50%;
    transition: translate var(--speed) var(--easing);
    translate: calc((50 - (var(--dark, 0) * 4)) * -1%) -50%;
}

.toggle__star:after {
    content: "";
    position: absolute;
    inset: 0;
    display: block;
    background: hsl(0 0% 0% / 0.5);
    filter: blur(4px);
    translate: 2% 4%;
    border-radius: 50%;
    z-index: -1;
}

.toggle__indicator-wrapper {
    position: absolute;
    inset: 0;
}

[aria-pressed=true] {
    --dark: 1;
}

/* Fun stuff! */

/* We have 11 stars */

.stars g {
    transform-box: fill-box;
    transform-origin: 50% 50%;
}

.stars g:nth-of-type(3) {
    animation: twinkle 4s -2s infinite;
}

.stars g:nth-of-type(11) {
    animation: twinkle 6s -2s infinite;
}

.stars g:nth-of-type(9) {
    animation: twinkle 4s -1s infinite;
}

@keyframes twinkle {

    0%,
    40%,
    60%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(0);
    }
}

.astrobear {
    width: 12%;
    position: absolute;
    top: 100%;
    left: 0%;
    transition: translate calc(var(--speed) + (var(--dark, 0) * (var(--bear-speed) - var(--speed)))) calc(var(--bear-speed) * (0.4 * var(--dark, 0))) linear;
    translate: calc(var(--dark, 0) * 400%) calc(var(--dark, 0) * -350%);
}

.astrobear svg {
    transform-origin: 50% 75%;
    scale: var(--dark, 0);
    rotate: calc(var(--dark, 0) * 360deg);
    transition: rotate calc(var(--speed) + (var(--dark, 0) * (var(--bear-speed) - var(--speed)))) calc(var(--bear-speed) * 0.4) linear, scale var(--speed) ease-in-out;
}


.astrobear__container {
    position: absolute;
    overflow: hidden;
    inset: 0;
    clip-path: inset(0 0 0 0);
    opacity: var(--dark, 0);
    translate: 0 calc(-200% + (var(--dark, 0) * 200%));
    transition: opacity var(--speed) var(--easing), translate var(--speed) var(--easing);
}

.pilot__container {
    position: absolute;
    overflow: hidden;
    inset: 0;
    clip-path: inset(0 0 0 0);
    opacity: calc(1 - var(--dark, 0));
    translate: 0 calc(var(--dark, 0) * 200%);
    transition: opacity var(--speed) var(--easing), translate var(--speed) var(--easing);
}

.pilot-bear {
    width: 18%;
    position: absolute;
    top: 70%;
    left: 100%;
    transition:
        translate calc(var(--speed) + ((1 - var(--dark, 0)) * ((var(--bear-speed) * 0.5) - var(--speed)))) calc((var(--bear-speed) * 0.5) * ((1 - var(--dark, 0)) * 0.4)) linear;
    translate:
        calc((0 - (1 - var(--dark, 0))) * (var(--width) + 100%)) calc((0 - (1 - var(--dark, 0))) * (200%));
}

.pilot {
    rotate: 12deg;
    animation: fly 4s infinite ease-in-out;
}

@keyframes fly {
    50% {
        translate: 0 -25%;
    }
}

.controls {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: sans-serif;
    color: var(--color);
    transition: color var(--speed) var(--easing);
}

[type=checkbox] {
    accent-color: var(--color);
    transition: accent-color var(--speed) var(--easing);
}

.bear-link {
    color: canvasText;
    position: fixed;
    top: 1rem;
    left: 1rem;
    width: 48px;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    opacity: 0.8;
    transition: color var(--speed);
}

:where(.x-link, .bear-link):is(:hover, :focus-visible) {
    opacity: 1;
}

.bear-link svg {
    width: 75%;
}