:root {
  /**
   * Layout.
   */
  --gutter: 1rem;
}

:root {
  --background: #141216;
  --text: #BFBEC1;
  --logo: #E5E4E7;
  --icon: #F7F7F8;
  --footer-text: #858287;
  --accent-background: #12292B;
  --accent: #00C9DB;
  --accent-text: #fff;
  --separator: #3D3B3F;
  --tooltip: #1E1E20;
  --tooltip-background: #fff;
  --alarm: #FF375C;
  --alert: #FFA24C;
  --toggle-background-off: #3D3B3F;
  --toggle-background-on: #00C9DB;
  --code-background: #1E1E20;
  --code-border: #3D3B3F;
  --code-do: #00CC63;
  --code-dont: #FF375C;
}

@media (prefers-color-scheme: light) {
  :root:not(.dark-mode) {
    /**
    * Colors.
    */
    --background: #fff;
    --text: #3D3B3F;
    --logo: #5F6368;
    --icon: #858287;
    --footer-text: #858287;
    --accent-background: #ECEFFF;
    --accent: #3740FF;
    --accent-text: #000;
    --separator: #E6E4E7;
    --tooltip: #fff;
    --tooltip-background: #1E1E20;
    --alarm: #FF375C;
    --alert: #FFA24C;
    --toggle-background-off: #BFBEC1;
    --toggle-background-on: #3740FF;
    --code-background: #F7F7F8;
    --code-border: #E6E4E7;
  }
}

@media (min-width: 720px) {
  :root {
    --gutter: 1.5rem;
  }
}

/**
 * Animations.
 */
@keyframes shake {
 10%, 90% {
   transform: translateX(-50.5%);
 }

 20%, 80% {
   transform: translateX(-49%);
 }

 30%, 50%, 70% {
   transform: translateX(-48%);
 }

 40%, 60% {
   transform: translateX(-52%);
 }
}

/**
 * Remove animations when the user indicates the preference.
 *
 * Also on slow updating devices.
 */
@media screen and (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0ms !important;
    animation: none !important;
  }
}

/* General */
body {
  background-color: var(--background);
  color: var(--text);
  font-size: 16px;
  font-family: 'DM Sans', sans-serif;
  line-height: 24px;
  margin: 0;
  padding: 0;
  width: 100%;
}
@media (min-width: 960px) {
  body {
    overflow-y: scroll;
  }
}
body.disable-scroll {
  overflow: hidden;
}
a {
  color: var(--accent-text);
  text-decoration: none;
}
a:hover,
a:active {
  text-decoration: underline;
}
*:focus {
  border: none;
  outline-style: dotted;
  outline-color: var(--accent);
}
h1,
h2,
h3,
h4 {
  color: var(--accent-text);
}
h1,
.h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 58px;
  letter-spacing: -0.02em;
}
h2,
.h2 {
  font-size: 40px;
  font-weight: 700;
  line-height: 48px;
  letter-spacing: -0.03em;
}
h3,
.h3 {
  font-size: 32px;
  font-weight: 700;
  line-height: 38px;
  letter-spacing: -0.02em;
}
h4,
.h4 {
  font-size: 24px;
  font-weight: 700;
  line-height: 32px;
}

/* Container */
.container {
  display: grid;
  max-width: calc(1200px + var(--gutter) * 2);
  padding: 0 var(--gutter);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}
.container--no-padding {
  padding: 0;
}

/* Offline Banner */
#offline-banner {
  position: fixed;
  opacity: 0;
  display: none;
  bottom: 1em;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  font: normal 0.8em sans-serif;
  padding: 0.5em 1em;
  border-radius: 4px;
  overflow: hidden;
  color: #fff;
  background: #fa4659;
  text-transform: uppercase;
  transition: opacity 200ms ease-in-out;
  white-space: pre;
}
[data-connection="offline"] #offline-banner {
  display: inline-block;
  opacity: 1;
}
#offline-banner.alert {
  animation: shake 0.6s cubic-bezier(.36,.07,.19,.97) both;
}

/* Site Header */
.site-header {
  background-color: var(--background);
  display: flex;
  align-items: flex-start;
  justify-items: center;
  height: 48px;
  overflow: hidden;
  padding: var(--gutter) 0;
  width: 100%;
  max-width: calc(1200px + var(--gutter) * 2);
  margin: 0 auto;
  font-size: 18px;
  z-index: 99;
}
.site-header .container {
  padding: 0;
  z-index: 1;
}
.site-header--logo-link {
  display: inline-block;
  margin-left: var(--gutter);
  max-width: 100px;
  line-height: 0;
}
.site-header--menu {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  height: calc(100vh - calc(var(--gutter) * 2 + 48px));
  width: 100%;
  overflow: scroll;
  list-style: none;
  margin: calc(var(--gutter) * 2 + 48px) 0 0 0;
  padding: 0;
  background-color: var(--background);
  transform: translateX(100vw);
  transition: transform 70ms ease-in-out;
}
.site-header.open .site-header--menu {
  transform: translateX(0);
}
.site-header--menu-item .site-header--menu-link {
  color: var(--accent-text);
  display: block;
  line-height: 1.5;
  text-decoration: none;
  padding: calc(var(--gutter) * 1.5) var(--gutter);
}
.site-header--menu-item .site-header--menu-link.active,
.site-header--menu-item .site-header--menu-link:active,
.site-header--menu-item .site-header--menu-link:hover {
  background-color: var(--accent-background);
  color: var(--accent);
}
.site-header--menu-item .site-header--menu-link svg {
  stroke: var(--icon);
}
.site-header--menu-item .site-header--menu-link.active svg,
.site-header--menu-item .site-header--menu-link:active svg,
.site-header--menu-item .site-header--menu-link:hover svg {
  stroke: var(--accent);
}
.site-header--menu-item .site-header--menu-link {
  display: grid;
  grid-template-columns: 1fr 24px;
  grid-auto-flow: column;
}
.site-header--menu-item .site-header--menu-link > svg {
  justify-items: start;
  grid-column: 2;
}
.site-header--menu-item .site-header--menu-link > span {
  justify-items: end;
  grid-column: 1;
}
.site-header--hamburger-btn {
  background-color: transparent;
  border: none;
  color: var(--accent-text);
  cursor: pointer;
  display: grid;
  grid-template-columns: 24px 1fr;
  font-size: 16px;
  line-height: 24px;
  padding: 0;
  position: absolute;
  right: var(--gutter);
  top: calc(var(--gutter) * 1.5);
  z-index: 999;
}
.site-header--hamburger-btn:hover {
  cursor: pointer;
}
.site-header--hamburger-btn__open {
  display: block;
}
.site-header--hamburger-btn__close {
  display: none;
}
.open .site-header--hamburger-btn__open {
  display: none;
}
.open .site-header--hamburger-btn__close {
  display: block;
}
.site-header--hamburger-btn span {
  display: none;
  margin-left: calc(var(--gutter) / 2);
  padding-right: 2px;
}
.open .site-header--hamburger-btn span {
  display: none;
}
.open .site-header--hamburger-btn:after {
  display: none;
  content: 'Close';
  margin-left: calc(var(--gutter) / 2);
  padding-right: 2px;
}

/* Site Header: Breakpoints */
@media (min-width: 720px) {
  .site-header {
    font-size: 24px;
    line-height: 32px;
  }
  .site-header--hamburger-btn span,
  .open .site-header--hamburger-btn:after {
    display: block;
  }
}
@media (min-width: 960px) {
  .site-header {
    font-size: 16px;
    line-height: 24px;
  }
  .site-header.open {
    height: auto;
  }
  .site-header .container {
    justify-items: end;
    grid-template-columns: auto 1fr;
    grid-auto-flow: column;
    padding: 0 var(--gutter);
  }
  .site-header--logo-link {
    margin-left: 0;
  }
  .site-header--menu {
    display: block;
    position: static;
    height: auto;
    width: auto;
    margin: 0;
    transform: none;
    overflow: visible;
    margin-right: calc(var(--gutter) / -2);
  }
  .site-header--menu-item {
    display: inline-block;
    text-align: right;
  }
  .site-header--menu-item .site-header--menu-link {
    margin: 0 0 0 calc(var(--gutter) / 2);
    padding: calc(var(--gutter) / 3) calc(var(--gutter) / 2);
  }
  .site-header--menu-item .site-header--menu-link.active,
  .site-header--menu-item .site-header--menu-link:active,
  .site-header--menu-item .site-header--menu-link:hover {
    background-color: transparent;
    color: var(--accent-text);
    text-decoration: underline;
  }
  .site-header--menu-item .site-header--menu-link {
    grid-template-columns: 36px 1fr;
  }
  .site-header--menu-item .site-header--menu-link > svg {
    grid-column: 1;
  }
  .site-header--menu-item .site-header--menu-link > span {
    grid-column: 2;
  }
  .site-header--hamburger-btn {
    display: none;
  }
}

/* Site Footer */
.site-footer {
  display: block;
  width: 100%;
  max-width: calc(1200px + var(--gutter) * 2);
  margin: 0 auto;
  border-top: 1px solid var(--separator);
}
.site-footer .site-footer--content {
  color: var(--footer-text);
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-flow: row;
  text-align: center;
  padding: var(--gutter) 0;
}
.site-footer .site-footer--content a {
  color: var(--accent-text);
  text-decoration: none;
}
.site-footer .site-footer--content a:hover {
  text-decoration: underline;
}
.site-footer .site-footer--content__credits {
  grid-row: 2;
}
.site-footer .site-footer--content__credits span {
  display: block;
  margin-bottom: calc(var(--gutter) / 2);
}
.site-footer .site-footer--content__gh-source {
  font-size: 18px;
  line-height: 26px;
  grid-row: 1;
}
.site-footer .site-footer--content__gh-source svg {
  display: inline-block;
  position: relative;
  top: 6px;
  margin-right: calc(var(--gutter) / 2);
}
.site-footer .site-footer--content__gh-source a {
  display: inline-block;
}

/* Site Footer: Breakpoints */
@media (min-width: 720px) {
  .site-footer {
    border-top: none;
  }
  .site-footer .site-footer--content {
    border-top: 1px solid var(--separator);
    grid-template-columns: 1fr;
    grid-auto-flow: column;
    text-align: left;
  }
  .site-footer .site-footer--content__credits {
    padding-top: 8px;
    grid-row: initial;
  }
  .site-footer .site-footer--content__credits span {
    display: inline-block;
    margin-bottom: 0;
  }
  .site-footer .site-footer--content__credits span:first-child {
    margin-right: var(--gutter);
  }
  .site-footer .site-footer--content__gh-source {
    grid-row: initial;
    text-align: right;
  }
}

/* Main */
main {
  max-width: calc(1200px + var(--gutter) * 2);
  margin: 0 auto;
}

/* Home and Category Header */
.page-header {
  font-size: 16px;
  line-height: 29px;
  margin-bottom: 3rem;
}

.page-header code {
  background: var(--code-background);
  border: 1px solid var(--code-border);
  padding: calc(var(--gutter) / 6);
  border-radius: 4px;
}

/* Home Header: Breakpoints */
@media (min-width: 720px) {
  .page-header {
    font-size: 18px;
    line-height: 32px;
    margin-bottom: 3.5rem;
    width: 75%;
  }
}
@media (min-width: 960px) {
  .page-header {
    margin-bottom: 4rem;
  }
}
@media (min-width: 1200px) {
  .page-header {
    width: 57.5%;
  }
}

/**
 * Single Video
 */
article {
  padding-bottom: calc(var(--gutter) * 3);
  margin-bottom: calc(var(--gutter) * 3);
  border-bottom: 1px solid var(--separator);
}
article .video-content {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
article p,
article ul,
article ol {
  font-size: 18px;
  line-height: 32px;
}
article ul,
article ol {
  margin: var(--gutter) 0;
}
article li {
  margin: calc(var(--gutter) / 3) 0;
}
article h1 {
  margin-top: calc(var(--gutter) * 2);
  margin-bottom: calc(var(--gutter) * 0.666);
}
article a {
  color: var(--accent);
}
article .video-content > *:not(pre) code {
  background: var(--code-background);
  border: 1px solid var(--code-border);
  padding: calc(var(--gutter) / 6);
  border-radius: 4px;
}
.info {
  font-size: 16px;
  line-height: 16px;
  margin-bottom: var(--gutter);
  color: var(--footer-text);
}
article pre,
.code-sample {
  margin-top: calc(var(--gutter) * 2);
  margin-bottom: calc(var(--gutter) * 2);
}
article h3 + pre {
  margin-top: 0;
}
article pre + p > em {
  position: relative;
  top: calc(var(--gutter) * -1);
}
.code-sample--do,
.code-sample--dont {
  padding-left: calc(var(--gutter) * 0.666);
  border-left: 4px solid var(--code-do);
}
.code-sample--dont {
  border-left-color: var(--code-dont);
}
.code-sample .code-sample--title,
h3[id*="code"],
h3[id*="sample"],
h3[id*="example"]{
  font-size: 24px;
  margin-bottom: calc(var(--gutter) / 2);
}
article pre,
.code-sample .code-sample--content {
  max-width: 760px;
  white-space: pre-wrap;
  font-size: 18px;
  font-family: monospace;
  padding: var(--gutter);
  border: 1px solid var(--code-border);
  background: var(--code-background);
  overflow-y: auto;
}
.video-container {
  --play-button-size: 112px;
  --aspect-ratio-16-9-padding: 56.25%;

  border-radius: 8px;
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
}
.video-container--image {
  height: 0;
  padding-bottom: var(--aspect-ratio-16-9-padding);
  position: relative;
  display: flex;
  align-items: center;
  justify-items: center;
  flex-flow: column nowrap;
}
.video-container--image picture img,
.video-container--image > img {
  width: 100%;
  height: auto;

  /*
   * Centers the button without using absolute positioning.
   *
   * This helps to avoid stacking issues and clashes with fixed navigation.
   */
  margin-bottom: calc(-1 * (var(--aspect-ratio-16-9-padding) / 2) - (var(--play-button-size) / 2));
}
.video-container .play {
  color: #000;
  background: transparent;
  border-radius: 50%;
  width: var(--play-button-size);
  height: var(--play-button-size);
  padding: 0;
  border: none;
  cursor: pointer;
}
.video-container .video-container--player {
  display: none;
  height: 720px;
}
.video-container.has-player .video-container--image {
  display: none;
}
.video-container.has-player .video-container--player {
  display: block;
  height: auto;
}
.video--disabled .video-container--image,
.video--disabled video-downloader {
  filter: grayscale(1);
  pointer-events: none;
}

/**
 * Downloads Page
 */
.container.downloads {
  display: flex;
  width: 100%;
  flex-direction: column;
}
 @media (min-width: 960px) {
  .container.downloads {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}
.quota {
  display: grid;
  grid-template-columns: max-content min-content;
  grid-template-rows: auto auto;
  grid-template-areas:
    'text text'
    'value progress';
  column-gap: var(--gutter);
  row-gap: calc(var(--gutter) / 6);
  align-items: center;

  color: var(--accent-text);
  font-size: 16px;
  line-height: 28px;
}
.quota--text {
  grid-area: text;
}
.quota--value {
  grid-area: value;
  display: block;
  font-size: 24px;
  line-height: 32px;
  font-weight: 500;
}
.quota--progress {
  grid-area: progress;
  display: inline-block;
  height: 12px;
  width: 48px;
  border-radius: 6px;
  background: var(--accent-background);
  overflow: hidden;
  line-height: 0;
}
.quota--progress-value {
  display: inline-block;
  background: var(--accent);
  height: 12px;
}
.page-header h1 {
  margin-bottom: 0.45em;
}
.download-tip {
  padding-top: 4rem;
  padding-bottom: 2rem;
  text-align: center;
}
.download-tip svg {
  vertical-align: text-bottom;
}
.download-tip svg path[stroke] {
  stroke: var(--accent);
}
.download-tip svg path:not([fill="none"]) {
  fill: var(--background);
}
button.delete-all {
  display: inline-flex;
  justify-items: center;
  font-family: 'DM Sans', sans-serif;
  line-height: 28px;
  height: 28px;
  font-size: 16px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  color: var(--icon);
  margin-top: var(--gutter);
}
button.delete-all svg {
  margin-right: calc(var(--gutter) / 2);
}
button.delete-all svg path {
  stroke: var(--icon);
}
button.delete-all:hover {
  color: var(--alarm)
}
button.delete-all:hover svg path {
  stroke: var(--alarm);
}

/**
 * Settings page.
 */
 .settings {
  margin-bottom: 4rem;
}
.settings .page-header {
  margin-bottom: 1.25rem;
}
.settings .page-header h1 {
  margin-bottom: 0;
}
.settings--option {
  border: 1px solid var(--separator);
  border-radius: 8px;
  margin-top: var(--gutter);
  padding: var(--gutter);
  text-align: center;
  width: calc(100% - calc(var(--gutter) * 2));
}
.setting--option__icon {
  align-items: center;
  background: var(--accent-background);
  border-radius: 50%;
  display: inline-block;
  height: 64px;
  justify-content: center;
  position: relative;
  width: 64px;
}
.setting--option__icon svg {
  position: absolute;
  top: calc(50% - 12px);
  left: calc(50% - 12px);
}
.settings--option .setting--option__title {
  color: var(--accent-text);
  font-weight: 500;
  font-size: 18px;
  line-height: 26px;
  margin-bottom: 0;
}
.settings--option .setting--option__desc {
  font-size: 14px;
  line-height: 25px;
  margin-top: 0.25rem;
  margin-bottom: 2rem;
}
@media (min-width: 720px) {
  .settings {
    margin-bottom: 4.5rem;
  }
  .settings .page-header {
    margin-bottom: 2rem;
  }
  .settings--option {
    display: grid;
    grid-template-columns: 88px 1fr 72px;
    text-align: left;
  }
  .settings--option .setting--option__title {
    margin-top: 0;
    box-sizing: border-box;
  }
  .settings--option .setting--option__desc {
    margin-bottom: 0;
  }
}
@media (min-width: 960px) {
  .settings {
    margin-bottom: 5rem;
  }
  .settings .page-header {
    margin-bottom: 3rem;
  }
  .settings--option {
    width: calc(63.333333333% - calc(var(--gutter) * 2));
  }
  toggle-button,
  offline-toggle-button {
    align-self: center;
    justify-self: center;
  }
}