html {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;

    --spacing: 3vmin;
    --spacing-small: 1vmin;
    --spacing-big: 5vmin;
    --border-radius: 1vmin;
    --color-primary: #009d89;
    --color-primary-hover: #007466;
    --color-bkg: #252525;
    --color-bkg-dark: #1e1e1e;
}

@media (orientation: portrait) {
    html {
        --spacing: 6vmin;
        --spacing-small: 3vmin;
        --border-radius: 3vmin;
    }
}

body {
    line-height: 1.3;
    background-color: var(--color-bkg);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

/**
 * Utils
 */

button {
    background-color: transparent;
    padding: 0;
    border: none;
    cursor: pointer;
    display: inline;
}

.button {
    background-color: var(--color-primary);
    border: none;
    color: #fff;
    padding: 0.8em 1em;
    border-radius: calc(0.7 * var(--border-radius));
    transition: background-color 200ms ease-in-out;
}

.button:hover {
    background-color: var(--color-primary-hover);
}

.list {
    padding-left: 1.5rem;
}

.list li + li {
    margin-top: 0.5em;
}

.icon {
    width: 1em;
}

.link {
    color: var(--color-primary);
    text-decoration: underline;
}

.link:hover {
    color: var(--color-primary-hover);
}

/**
 * Menu
 */

.menu {
    position: absolute;
    left: 50%;
    top: 5%;
    transform: translateX(-50%) translateY(-50%);
}

.menu__item {
    font-size: 2rem;
    color: #fff;
    opacity: 0.25;
}

.menu__item:hover {
    opacity: 0.6 !important;
}

.menu__item + .menu__item {
    margin-left: 1rem;
}

.menu__item--image {
    opacity: 0.6;
}

body.snake .menu__item--image {
    opacity: 0.25;
}

body.snake .menu__item--snake {
    opacity: 0.6;
}

.main-content__controls--snake {
    display: none;
}

body.snake .main-content__controls--snake {
    display: flex;
}

body.snake .main-content__controls--image {
    display: none;
}

/*
.snake-content {
    display: none;
}

body.snake .snake-content {
    display: block;
}

body.snake .main-content {
    display: none;
}*/

/**
 * Connect Area
 */

.connect-area {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #000;
    z-index: 100;
}

.connect-area:before {
    content: '';
    position: absolute;
    inset: 0;
    background-color: #252525;
    opacity: 0.6;
}

.connect-area__popup {
    position: relative;
    background-color: #fff;
    padding: var(--spacing);
    border-radius: var(--border-radius);
    max-width: 400px;
    width: calc(100% - 2 * var(--spacing));
}

.connect-area__desc {
    margin: var(--spacing) 0;
}

.connect-area__button {
    display: block;
    font-size: 1.3rem;
    margin: var(--spacing-big) auto 0 auto;
}

.connect-area__button-skip {
    display: block;
    margin: var(--spacing-small) auto 0 auto;
}

.connect-area__title {
    display: flex;
    align-items: center;
}

.connect-area__icon {
    margin-right: 0.25em;
}

/**
 * Control Area
 */

.main-content {
    display: flex;
    align-items: center;
}

.main-content__arrow {
    font-size: 5rem;
    margin-left: var(--spacing);
    opacity: 0.2;
}

.main-content__controls, .main-content__matrix {
    width: 35vmin;
    height: 35vmin;
}

.main-content__matrix {
    margin-left: var(--spacing);
}

.main-content__canvas {
    display: none;
    pointer-events: none;
}

@media (orientation: portrait) {
    .main-content {
        flex-direction: column;
    }

    .main-content__controls, .main-content__matrix {
        width: 60vmin;
        height: 60vmin;
    }

    .main-content__matrix {
        margin-top: var(--spacing);
        margin-left: 0;
    }

    .main-content__arrow {
        margin-top: var(--spacing);
        margin-left: 0;
        transform: rotate(90deg);
        font-size: 3rem;
    }
}

.image-controls__drop {
    width: 100%;
    height: 100%;
}

.snake-controls {
    align-items: center;
    justify-content: center;
}

.snake-controls__wrapper {
    display: grid;
    grid-gap: 1em;
    grid-template-areas:
    '.    up    .'
    'left restart right'
    '.    down  .';
}

.snake-controls__button {
    font-size: 1.5rem;
    line-height: 1;
}

.snake-controls__button--up {
    grid-area: up;
}

.snake-controls__button--up svg {
    transform: rotate(-90deg);
}

.snake-controls__button--left {
    grid-area: left;
}

.snake-controls__button--left svg {
    transform: rotate(180deg);
}

.snake-controls__button--right {
    grid-area: right;
}

.snake-controls__button--down {
    grid-area: down;
}

.snake-controls__button--down svg {
    transform: rotate(90deg);
}

.snake-controls__button--restart {
    grid-area: restart;
    color: #fff;
    opacity: 0.2;
    font-size: 2rem;
}

.snake-controls__button--restart:hover {
    opacity: 0.6;
}


/**
 * Components
 */

.matrix {
    display: grid;
    border: 0.5px solid #000;
    position: relative;
    z-index: -1;
}

.matrix__pixel {
    border: 0.5px solid #000;
    box-sizing: border-box;
    opacity: 1;
    transition: opacity 400ms ease-in-out;
}

.matrix__loader {
    width: 4vmin;
    height: 4vmin;
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -2vmin;
    margin-top: -2vmin;
    border: 0.3vmin solid currentColor;
    border-left-color: transparent;
    border-radius: 2vmin;
    animation: spin 750ms infinite linear;
    opacity: 0;
    transition: opacity 400ms ease-in-out;
    transform: rotate(0deg);
}

.matrix[data-loading="true"] .matrix__loader {
    opacity: 1;
}

.matrix[data-loading="true"] .matrix__pixel {
    opacity: 0;
}

.drop {
    background-color: var(--color-bkg-dark);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: var(--border-radius);
    border: 0.3vmin dashed rgba(255, 255, 255, 0.1);
    transition: border-color 200ms ease-in-out;
    cursor: pointer;
    background-position: center;
    background-size: cover;
}

.drop__icon, .drop__text {
    opacity: 0.1;
    transition: opacity 200ms ease-in-out;
    pointer-events: none;
}

.drop[style] .drop__icon, .drop[style] .drop__text {
    display: none;
}

.drop[data-focus=true], .drop:hover {
    border-color: rgba(255, 255, 255, 0.5);
}

.drop[data-focus=true] .drop__icon, .drop:hover .drop__icon, .drop[data-focus=true] .drop__text, .drop:hover .drop__text {
    opacity: 0.5;
}

.drop__icon {
    font-size: 5vmin;
}

.drop__text {
    font-size: 1.7vmin;
    margin-top: 2vmin;
}

@media (orientation: portrait) {
    .drop__icon {
        font-size: 10vmin;
    }

    .drop__text {
        font-size: 3vmin;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}