/* Variable */
:root {
    --color-black: #FFFFFF;
    --color-drak-gray: #fafafa;
    --color-gray: #e2e2e2;
    --color-light-gray: #757575;
    --color-white: #1E1E1E;
    --color-primary: #2d81fe;

    --font-main: Arial, sans-serif;
    --heading-size: 0.875rem;
    --body-size: 0.75rem;

    --spacing-small: 0.33rem;
    --spacing-medium: 0.66rem;
    --spacing-large: 1rem;

    --border-radius: 0.5rem;
    --border: 1px solid #757575;

    --transition: 0.3s ease;
}

/* Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body.dark {
    --color-black: #1E1E1E;
    --color-drak-gray: #212121;
    --color-gray: #2D2D2D;
    --color-light-gray: #444444;
    --color-white: #FFFFFF;

    --border: 1px solid #444444;
}

body {
    font-family: var(--font-main);
    font-size: var(--body-size);
    line-height: 1.5;
    background-color: var(--color-black);
    color: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-main);
    font-size: var(--heading-size);
}

a {
    color: var(--color-light-gray);
}

ul {
    margin-left: var(--spacing-medium);
}
button {
    padding: var(--spacing-small) var(--spacing-medium);
    border: var(--border);
    border-radius: var(--border-radius);
    background-color: var(--color-drak-gray);
    color: var(--color-white);
    cursor: pointer;
    transition: background-color var(--transition);
}
button:hover {
    background-color: var(--color-black);
}

hr {
    border: 0;
    border-top: var(--border);
    margin: var(--spacing-medium) 0;
}

.border { 
    border: var(--border);
    border-radius: var(--border-radius);
}

.padding {
    padding: var(--spacing-medium);
}

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

.light-bg {
    background-color: var(--color-drak-gray);
}

.highlight {
    background-color: var(--color-gray);
    border-radius: var(--border-radius);
    padding: var(--spacing-small);
    margin-left: var(--spacing-small);
    line-height: 1;
}


/* Layout */
.container {
    max-width: 66.5rem;
    margin: 0 auto;
    padding: 0 var(--spacing-medium);
}
.flex {
    display: flex;
}
.center-x {
    justify-content: center;
}
.center-y {
    align-items: center;
}
.between {
    justify-content: space-between;
}
.flex-auto {
    flex: 1;
}
.flex-66 {
    flex: 0 0 66.6%;
}
.flex-33 {
    flex: 0 0 calc(33.3% - var(--spacing-medium));
}
.gap {
    gap: var(--spacing-medium);
}
@media screen and (max-width: 66.5rem) {
    .mobile {
        flex-direction: column;
    }
}

/* Header */
header {
    padding: var(--spacing-medium) 0;
}

/* viewport */
.viewport {
    margin-bottom: var(--spacing-medium);
}
.range-container {
    position: relative;
    border-top: var(--border);
}
.range-mark {
    position: absolute;
    top: 0;
    left: 30%;
    background-color: var(--color-white);
    height: var(--spacing-medium);
    width: 0.0625rem;
}
.range-marker {
    background-color: var(--color-light-gray);
    height: var(--spacing-medium);
    width: 0.0625rem;
}
.range-labels {
    color: var(--color-light-gray);
    margin-top: var(--spacing-small);
}

/* controls */
.input {
    margin-bottom: var(--spacing-medium);
}
.input label, .toggle label {
    display: block;
    margin-bottom: var(--spacing-small);
}

input[type=range] {
    -webkit-appearance: none;
    margin: 0;
    width: 100%;
    background: transparent;

}
input[type=range]:focus {
    outline: none;
}
input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 0.5rem;
    cursor: pointer;
    box-shadow: none;
    border-radius: 0.5rem;
    background: var(--color-black);
    border: var(--border);
}
input[type=range]::-webkit-slider-thumb {
    box-shadow: none;
    border: 1px solid var(--color-primary);
    height: 1rem;
    width: 1rem;
    border-radius: 0.5rem;
    background: var(--color-black);
    cursor: pointer;
    -webkit-appearance: none;
    margin-top: -0.32rem;
}
input[type=range]:focus::-webkit-slider-runnable-track {
    background: unset;
}
input[type=range]::-moz-range-track {
    width: 100%;
    height: 0.5rem;
    cursor: pointer;
    box-shadow: none;
    border-radius: 0.5rem;
    background: var(--color-black);
    border: var(--border);
}
input[type=range]::-moz-range-thumb {
    box-shadow: none;
    border: 1px solid var(--color-primary);
    height: 1rem;
    width: 1rem;
    border-radius: 0.5rem;
    background: var(--color-black);
    cursor: pointer;
}
input[type=range]::-ms-track {
    width: 100%;
    height: 0.5rem;
    cursor: pointer;
    background: transparent;
    border-color: transparent;
    border-width: 16px 0;
    color: transparent;
}
input[type=range]::-ms-fill-lower {
    background: var(--color-gray);
    border: 0.2px solid #010101;
    border-radius: 2.6px;
    box-shadow: none;
}
input[type=range]::-ms-fill-upper {
    background: var(--color-gray);
    border: 0.2px solid #010101;
    border-radius: 2.6px;
    box-shadow: none;
}
input[type=range]::-ms-thumb {
    box-shadow: none;
    border: 1px solid #000000;
    height: 36px;
    width: 16px;
    border-radius: 3px;
    background: var(--color-gray);
    cursor: pointer;
}
input[type=range]:focus::-ms-fill-lower {
    background: var(--color-gray);
}
input[type=range]:focus::-ms-fill-upper {
    background: var(--color-gray);
}

.toggle-wrapper {
    background-color: var(--color-black);
    width: 2rem;
    height: calc(var(--spacing-medium) + 2px);
    border-radius: 1rem;
    border: var(--border);
    cursor: pointer;
}
.toggle-wrapper::before {
    content: '';
    display: block;
    width: calc(var(--spacing-medium) - 2px);
    height: calc(var(--spacing-medium) - 2px);
    border-radius: 50%;
    border: 1px solid var(--color-primary);
    background-color: var(--color-black);
    transition: transform var(--transition);
}
.toggle-wrapper.active::before {
    transform: translateX(calc(var(--spacing-medium) - 2px));
}

.nozzle-viewport {
    margin-bottom: var(--spacing-medium);
    background-color: var(--color-black);
}

/* footer */
footer {
    padding: var(--spacing-medium) 0;
    color: var(--color-light-gray);
}