video-js.less

/*!
Video.js Default Styles (http://videojs.com)
Version GENERATED_AT_BUILD
Create your own skin at http://designer.videojs.com
*/

// To customize the player skin, change the values of the variables or edit the
// CSS below.
// (This file uses LESS. Learn more at http://lesscss.org/)

// The base font size controls the size of everything, not just text. All
// diminensions use em-based sizes so that the scale along with the font size.
// Try increasing it to 20px and see what happens.
@base-font-size: 10px;
@touch-device-font-size: 15px;

// The main font color controls the color of the text and the icons (font icons)
@main-font-color: #CCCCCC; // e.g. rgb(255, 255, 255) or #ffffff

// The default color of control backgrounds is mostly black but with a little
// bit of blue so it can still be seen on all black video frames, which are
// common.
@control-bg-color: #07141E; // e.g. rgb(255, 255, 255) or #ffffff
@control-bg-alpha: 0.7; // 1.0 = 100% opacity, 0.0 = 0% opacity

// The slider bar color is used for the progress bar and the volume bar
@slider-bar-color: #66A8CC; // e.g. rgb(255, 255, 255) or #ffffff
// The background of the progress bar and volume bar have a lined pattern that
// is created from a base64 encoded image. You can generate your own pattern at
// http://www.patternify.com/ then replace the value in the quotes with your own
@slider-bar-pattern: ~'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAYAAAAGCAYAAADgzO9IAAAAP0lEQVQIHWWMAQoAIAgDR/QJ/Ub//04+w7ZICBwcOg5FZi5iBB82AGzixEglJrd4TVK5XUJpskSTEvpdFzX9AB2pGziSQcvAAAAAAElFTkSuQmCC';
// The color of the slider background
@slider-background-color: #333333;
@slider-background-alpha: 0.9; // 1.0 = 100% opacity, 0.0 = 0% opacity

// The "Big Play Button" is the play button that shows before the video plays.
// To center it set the align values to center and middle. The typical location
// of the button is the center, but there is trend towards moving it to a corner
// where it gets out of the way of valuable content in the poster image.
@big-play-align: left; // left, center, or right
@big-play-vertical-align: top; // top, middle, or bottom
// The button colors match the control colors by default but you can customize
// them by replace the variables (@control-bg-color) with your own color values.
@big-play-bg-color: @control-bg-color;
@big-play-bg-alpha: @control-bg-alpha;
// The font size is what makes the big play button, big. All width/height values
// use ems, which are a multiple of the font size.
// If the @base-font-size is 10px, then 3em equals 30px.
@big-play-font-size: 3em;
// Now that font size is set, the following em values will be a multiple of the
// new font size. If @big-play-font-size is 3em (30px), then setting the any of
// the following values to 2em would equal 60px. 2 * font-size
@big-play-margin: 0.5em;
@big-play-width: 4em;
@big-play-height: 2.6em;
@big-play-border-radius: 0.8em;
@big-play-border-width: 0.1em;
@big-play-border-color: #3b4249;

/* SKIN
================================================================================
The main class name for all skin-specific styles. To make your own skin,
replace all occurances of 'vjs-default-skin' with a new name. Then add your new
skin name to your video tag instead of the default skin.
e.g. <video class="video-js my-skin-name">
*/
.vjs-default-skin {
  color: @main-font-color;
}

/* Custom Icon Font
--------------------------------------------------------------------------------
The control icons are from a custom font. Each icon corresponds to a character
(e.g. "\e001"). Font icons allow for easy scaling and coloring of icons.
*/
@font-face{
  font-family: 'VideoJS';
  src: url('font/vjs.eot');
  src: url('font/vjs.eot?#iefix') format('embedded-opentype'),
  url('font/vjs.woff') format('woff'),
  url('font/vjs.ttf') format('truetype');

  font-weight: normal;
  font-style: normal;
}

// Icon font character values
@play-icon: "\e001";
@pause-icon: "\e002";
@volume-muted-icon: "\e003";
@volume-low-icon: "\e004";
@volume-mid-icon: "\e005";
@volume-high-icon: "\e006";
@fullscreen-enter-icon: "\e000";
@fullscreen-exit-icon: "\e00b";
@square-icon: "\e009";
@spinner-icon: "\e00a";
@spinner2-icon: "\e00d";
@spinner3-icon: "\e01e";
@spinner4-icon: "\e01f";
@subtitles-icon: "\e00c";
@captions-icon: "\e008";
@share-icon: "\e00e";

/* Base UI Component Classes
--------------------------------------------------------------------------------
*/

/* Slider - used for Volume bar and Seek bar */
.vjs-default-skin .vjs-slider {
  /* Replace browser focus hightlight with handle highlight *///
  outline: 0;
  position: relative;
  cursor: pointer;
  padding: 0;

  .background-color-with-alpha(@slider-background-color, @slider-background-alpha);
}

.vjs-default-skin .vjs-slider:focus {
  .box-shadow(0 0 2em #fff);
}

.vjs-default-skin .vjs-slider-handle {
  position: absolute;
  /* Needed for IE6 *///
  left: 0;
  top: 0;
}

.vjs-default-skin .vjs-slider-handle:before {
  content: @square-icon;
  font-family: VideoJS;
  font-size: 1em;
  line-height: 1;
  text-align: center;
  text-shadow: 0em 0em 1em #fff;

  position: absolute;
  top: 0;
  left: 0;

  /* Rotate the square icon to make a diamond *///
  .transform(rotate(-45deg));
}

/* Control Bar
--------------------------------------------------------------------------------
The default control bar that is a container for most of the controls.
*/
.vjs-default-skin .vjs-control-bar {
  /* Start hidden *///
  display: none;
  position: absolute;
  /* Place control bar at the bottom of the player box/video.
     If you want more margin below the control bar, add more height. *///
  bottom: 0;
  /* Use left/right to stretch to 100% width of player div *///
  left: 0;
  right: 0;
  /* Height includes any margin you want above or below control items *///
  height: 3.0em;

  .background-color-with-alpha(@control-bg-color, @control-bg-alpha);
}

/* Show the control bar only once the video has started playing */
.vjs-default-skin.vjs-has-started .vjs-control-bar {
  display: block;
  /* Visibility needed to make sure things hide in older browsers too. */
  visibility: visible;
  opacity: 1;

  @trans: visibility 0.1s, opacity 0.1s; // Var needed because of comma
  .transition(@trans);
}

/* Hide the control bar when the video is playing and the user is inactive  */
.vjs-default-skin.vjs-has-started.vjs-user-inactive.vjs-playing .vjs-control-bar {
  display: block;
  visibility: hidden;
  opacity: 0;

  @trans: visibility 1.0s, opacity 1.0s;
  .transition(@trans);
}

.vjs-default-skin.vjs-controls-disabled .vjs-control-bar {
  display: none;
}

.vjs-default-skin.vjs-using-native-controls .vjs-control-bar {
  display: none;
}

/* IE8 is flakey with fonts, and you have to change the actual content to force
fonts to show/hide properly.
  - "\9" IE8 hack didn't work for this
  - Found in XP IE8 from http://modern.ie. Does not show up in "IE8 mode" in IE9
*/
@ie8screen: ~"\0screen";
.vjs-default-skin.vjs-user-inactive.vjs-playing .vjs-control-bar :before {
  @media @ie8screen { content: ""; }
}

/* General styles for individual controls. */
.vjs-default-skin .vjs-control {
  outline: none;
  position: relative;
  float: left;
  text-align: center;
  margin: 0;
  padding: 0;
  height: 3.0em;
  width: 4em;
}

/* FontAwsome button icons */
.vjs-default-skin .vjs-control:before {
  font-family: VideoJS;
  font-size: 1.5em;
  line-height: 2;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  text-align: center;
  text-shadow: 1px 1px 1px rgba(0,0,0,0.5);
}

/* Replacement for focus outline */
.vjs-default-skin .vjs-control:focus:before,
.vjs-default-skin .vjs-control:hover:before {
  text-shadow: 0em 0em 1em rgba(255, 255, 255, 1);
}

.vjs-default-skin .vjs-control:focus {
  /*  outline: 0; *///
  /* keyboard-only users cannot see the focus on several of the UI elements when
  this is set to 0 */
}

/* Hide control text visually, but have it available for screenreaders */
.vjs-default-skin .vjs-control-text {
  .hide-visually;
}

/* Play/Pause
--------------------------------------------------------------------------------
*/
.vjs-default-skin .vjs-play-control {
  width: 5em;
  cursor: pointer;
}
.vjs-default-skin .vjs-play-control:before {
  content: @play-icon;
}
.vjs-default-skin.vjs-playing .vjs-play-control:before {
  content: @pause-icon;
}

/* Volume/Mute
-------------------------------------------------------------------------------- */
.vjs-default-skin .vjs-mute-control,
.vjs-default-skin .vjs-volume-menu-button {
  cursor: pointer;
  float: right;
}
.vjs-default-skin .vjs-mute-control:before,
.vjs-default-skin .vjs-volume-menu-button:before {
  content: @volume-high-icon;
}
.vjs-default-skin .vjs-mute-control.vjs-vol-0:before,
.vjs-default-skin .vjs-volume-menu-button.vjs-vol-0:before {
  content: @volume-muted-icon;
}
.vjs-default-skin .vjs-mute-control.vjs-vol-1:before,
.vjs-default-skin .vjs-volume-menu-button.vjs-vol-1:before {
  content: @volume-low-icon;
}
.vjs-default-skin .vjs-mute-control.vjs-vol-2:before,
.vjs-default-skin .vjs-volume-menu-button.vjs-vol-2:before {
  content: @volume-mid-icon;
}

.vjs-default-skin .vjs-volume-control {
  width: 5em;
  float: right;
}
.vjs-default-skin .vjs-volume-bar {
  width: 5em;
  height: 0.6em;
  margin: 1.1em auto 0;
}

.vjs-default-skin .vjs-volume-menu-button .vjs-menu-content {
  height: 2.9em;
}

.vjs-default-skin .vjs-volume-level {
  position: absolute;
  top: 0;
  left: 0;
  height: 0.5em;

  background: @slider-bar-color
    url(@slider-bar-pattern)
    -50% 0 repeat;
}
.vjs-default-skin .vjs-volume-bar .vjs-volume-handle {
  width: 0.5em;
  height: 0.5em;
}

.vjs-default-skin .vjs-volume-handle:before {
  font-size: 0.9em;
  top: -0.2em;
  left: -0.2em;

  width: 1em;
  height: 1em;
}

.vjs-default-skin .vjs-volume-menu-button .vjs-menu .vjs-menu-content {
  width: 6em;
  left: -4em;
}

/* Progress
--------------------------------------------------------------------------------
*/
.vjs-default-skin .vjs-progress-control {
  position: absolute;
  left: 0;
  right: 0;
  width: auto;
  font-size: 0.3em;
  height: 1em;
  /* Set above the rest of the controls. *///
  top: -1em;

  /* Shrink the bar slower than it grows. *///
  .transition(all 0.4s);
}

/* On hover, make the progress bar grow to something that's more clickable.
    This simply changes the overall font for the progress bar, and this
    updates both the em-based widths and heights, as wells as the icon font */
.vjs-default-skin:hover .vjs-progress-control {
  font-size: .9em;

  /* Even though we're not changing the top/height, we need to include them in
      the transition so they're handled correctly. */
  .transition(all 0.2s);
}

/* Box containing play and load progresses. Also acts as seek scrubber. */
.vjs-default-skin .vjs-progress-holder {
  height: 100%;
}

/* Progress Bars */
.vjs-default-skin .vjs-progress-holder .vjs-play-progress,
.vjs-default-skin .vjs-progress-holder .vjs-load-progress {
  position: absolute;
  display: block;
  height: 100%;
  margin: 0;
  padding: 0;
  /* Needed for IE6 *///
  left: 0;
  top: 0;
}

.vjs-default-skin .vjs-play-progress {
  /*
    Using a data URI to create the white diagonal lines with a transparent
      background. Surprisingly works in IE8.
      Created using http://www.patternify.com
    Changing the first color value will change the bar color.
    Also using a paralax effect to make the lines move backwards.
      The -50% left position makes that happen.
  */
  background: @slider-bar-color
    url(@slider-bar-pattern)
    -50% 0 repeat;
}
.vjs-default-skin .vjs-load-progress {
  background: rgb(100, 100, 100) /* IE8- Fallback */;
  background: rgba(255, 255, 255, 0.4);
}

.vjs-default-skin .vjs-seek-handle {
  width: 1.5em;
  height: 100%;
}

.vjs-default-skin .vjs-seek-handle:before {
  padding-top: 0.1em /* Minor adjustment */;
}

/* Time Display
--------------------------------------------------------------------------------
*/
.vjs-default-skin .vjs-time-controls {
  font-size: 1em;
  /* Align vertically by making the line height the same as the control bar *///
  line-height: 3em;
}
.vjs-default-skin .vjs-current-time { float: left; }
.vjs-default-skin .vjs-duration { float: left; }
/* Remaining time is in the HTML, but not included in default design */
.vjs-default-skin .vjs-remaining-time { display: none; float: left; }
.vjs-time-divider { float: left; line-height: 3em; }

/* Fullscreen
--------------------------------------------------------------------------------
*/
.vjs-default-skin .vjs-fullscreen-control {
  width: 3.8em;
  cursor: pointer;
  float: right;
}
.vjs-default-skin .vjs-fullscreen-control:before {
  content: @fullscreen-enter-icon;
}
/* Switch to the exit icon when the player is in fullscreen */
.vjs-default-skin.vjs-fullscreen .vjs-fullscreen-control:before {
  content: @fullscreen-exit-icon;
}

/* Big Play Button (play button at start)
--------------------------------------------------------------------------------
Positioning of the play button in the center or other corners can be done more
easily in the skin designer. http://designer.videojs.com/
*/
.vjs-default-skin .vjs-big-play-button {
  // Calculate total width/height so we're able to center the button
  @total-width: @big-play-width + (@big-play-border-width * 2);
  @total-height: @big-play-height + (@big-play-border-width * 2);
  // Position the button using the absolute-align mixin (bottom of page)
  .absolute-align(@big-play-align, @big-play-margin, @total-width);
  .absolute-align(@big-play-vertical-align, @big-play-margin, @total-height);

  font-size: @big-play-font-size;
  display: block;
  z-index: 2;
  position: absolute;
  width: @big-play-width;
  height: @big-play-height;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  opacity: 1;

  /* Need a slightly gray bg so it can be seen on black backgrounds *///
  .background-color-with-alpha(@big-play-bg-color, @big-play-bg-alpha);

  border: @big-play-border-width solid @big-play-border-color;

  .border-radius(@big-play-border-radius);
  .box-shadow(0px 0px 1em rgba(255, 255, 255, 0.25));
  .transition(all 0.4s);
}

/* Optionally center */
.vjs-default-skin.vjs-big-play-centered .vjs-big-play-button {
  @total-width: @big-play-width + (@big-play-border-width * 2);
  @total-height: @big-play-height + (@big-play-border-width * 2);

  .absolute-align(center, @big-play-margin, @total-width);
  .absolute-align(middle, @big-play-margin, @total-height);
}

/* Hide if controls are disabled */
.vjs-default-skin.vjs-controls-disabled .vjs-big-play-button {
  display: none;
}
/* Hide when video starts playing */
.vjs-default-skin.vjs-has-started .vjs-big-play-button {
  display: none;
}
/* Hide on mobile devices. Remove when we stop using native controls
    by default on mobile  */
.vjs-default-skin.vjs-using-native-controls .vjs-big-play-button {
  display: none;
}

.vjs-default-skin:hover .vjs-big-play-button,
.vjs-default-skin .vjs-big-play-button:focus {
  outline: 0;
  border-color: #fff;
  /* IE8 needs a non-glow hover state *///
  background-color: rgb(80, 80, 80);
  background-color: rgba(50, 50, 50, 0.75);

  .box-shadow(0 0 3em #fff);
  .transition(all 0s);
}

.vjs-default-skin .vjs-big-play-button:before {
  content: @play-icon;
  font-family: VideoJS;
  /* In order to center the play icon vertically we need to set the line height
     to the same as the button height */
  line-height: @big-play-height;
  text-shadow: 0.05em 0.05em 0.1em #000;
  text-align: center /* Needed for IE8 */;

  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Loading Spinner
--------------------------------------------------------------------------------
*/
.vjs-loading-spinner {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;

  font-size: 4em;
  line-height: 1;

  width: 1em;
  height: 1em;

  margin-left: -0.5em;
  margin-top: -0.5em;

  opacity: 0.75;

  .animation(spin 1.5s infinite linear);
}

.vjs-default-skin .vjs-loading-spinner:before {
  content: @spinner3-icon;
  font-family: VideoJS;

  position: absolute;
  top: 0;
  left: 0;
  width: 1em;
  height: 1em;
  text-align: center;
  text-shadow: 0em 0em 0.1em #000;
}

@-moz-keyframes spin {
  0% { -moz-transform: rotate(0deg); }
  100% { -moz-transform: rotate(359deg); }
}
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(359deg); }
}
@-o-keyframes spin {
  0% { -o-transform: rotate(0deg); }
  100% { -o-transform: rotate(359deg); }
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(359deg); }
}

/* Menu Buttons (Captions/Subtitles/etc.)
--------------------------------------------------------------------------------
*/
.vjs-default-skin .vjs-menu-button {
  float: right;
  cursor: pointer;
}

.vjs-default-skin .vjs-menu {
  display: none;
  position: absolute;
  bottom: 0;
  left: 0em; /* (Width of vjs-menu - width of button) / 2 */
  width: 0em;
  height: 0em;
  margin-bottom: 3em;

  border-left: 2em solid transparent;
  border-right: 2em solid transparent;

  border-top: 1.55em solid rgb(0, 0, 0); /* Same width top as ul bottom */
  border-top-color: rgba(7, 40, 50, 0.5); /* Same as ul background */
}

/* Button Pop-up Menu */
.vjs-default-skin .vjs-menu-button .vjs-menu .vjs-menu-content {
  display: block;
  padding: 0; margin: 0;
  position: absolute;
  width: 10em;
  bottom: 1.5em; /* Same bottom as vjs-menu border-top */
  max-height: 15em;
  overflow: auto;

  left: -5em; /* Width of menu - width of button / 2 */

  .background-color-with-alpha(@control-bg-color, @control-bg-alpha);
  .box-shadow(-0.2em -0.2em 0.3em rgba(255, 255, 255, 0.2));
}

.vjs-default-skin .vjs-menu-button:hover .vjs-menu {
  display: block;
}
.vjs-default-skin .vjs-menu-button ul li {
  list-style: none;
  margin: 0;
  padding: 0.3em 0 0.3em 0;
  line-height: 1.4em;
  font-size: 1.2em;
  text-align: center;
  text-transform: lowercase;
}
.vjs-default-skin .vjs-menu-button ul li.vjs-selected {
  background-color: #000;
}
.vjs-default-skin .vjs-menu-button ul li:focus,
.vjs-default-skin .vjs-menu-button ul li:hover,
.vjs-default-skin .vjs-menu-button ul li.vjs-selected:focus,
.vjs-default-skin .vjs-menu-button ul li.vjs-selected:hover {
  outline: 0;
  color: #111;

  .background-color-with-alpha(rgb(255, 255, 255), 0.75);
  .box-shadow(0 0 1em rgba(255, 255, 255, 1));
}
.vjs-default-skin .vjs-menu-button ul li.vjs-menu-title {
  text-align: center;
  text-transform: uppercase;
  font-size: 1em;
  line-height: 2em;
  padding: 0;
  margin: 0 0 0.3em 0;
  font-weight: bold;
  cursor: default;
}

/* Subtitles Button */
.vjs-default-skin .vjs-subtitles-button:before { content: @subtitles-icon; }

/* Captions Button */
.vjs-default-skin .vjs-captions-button:before {
  content: @captions-icon;
}

/* Replacement for focus outline */
.vjs-default-skin .vjs-captions-button:focus .vjs-control-content:before,
.vjs-default-skin .vjs-captions-button:hover .vjs-control-content:before {
  .box-shadow(0 0 1em rgba(255, 255, 255, 1));
}

/*
REQUIRED STYLES (be careful overriding)
================================================================================
When loading the player, the video tag is replaced with a DIV,
that will hold the video tag or object tag for other playback methods.
The div contains the video playback element (Flash or HTML5) and controls,
and sets the width and height of the video.

** If you want to add some kind of border/padding (e.g. a frame), or special
positioning, use another containing element. Otherwise you risk messing up
control positioning and full window mode. **
*/
.video-js {
  background-color: #000;
  position: relative;
  padding: 0;
  /* Start with 10px for base font size so other dimensions can be em based and
     easily calculable. */
  font-size: @base-font-size;
  /* Allow poster to be vertially aligned. */
  vertical-align: middle;
  /*  display: table-cell; */ /*This works in Safari but not Firefox.*/

  /* Provide some basic defaults for fonts */
  font-weight: normal;
  font-style: normal;
  /* Avoiding helvetica: issue #376 */
  font-family: Arial, sans-serif;

  /* Turn off user selection (text highlighting) by default.
     The majority of player components will not be text blocks.
     Text areas will need to turn user selection back on. */
  .user-select(none);
}

/* Playback technology elements expand to the width/height of the containing div
    <video> or <object> */
.video-js .vjs-tech {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Fix for Firefox 9 fullscreen (only if it is enabled). Not needed when
   checking fullScreenEnabled. */
.video-js:-moz-full-screen { position: absolute; }

/* Fullscreen Styles */
body.vjs-full-window {
  padding: 0;
  margin: 0;
  height: 100%;
  /* Fix for IE6 full-window. http://www.cssplay.co.uk/layouts/fixed.html *///
  overflow-y: auto;
}
.video-js.vjs-fullscreen {
  position: fixed;
  overflow: hidden;
  z-index: 1000;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  width: 100% !important;
  height: 100% !important;
  /* IE6 full-window (underscore hack) *///
  _position: absolute;
}
.video-js:-webkit-full-screen {
  width: 100% !important;
  height: 100% !important;
}
.video-js.vjs-fullscreen.vjs-user-inactive {
  cursor: none;
}

/* Poster Styles */
.vjs-poster {
  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: contain;
  cursor: pointer;
  height: 100%;
  margin: 0;
  padding: 0;
  position: relative;
  width: 100%;
}
.vjs-poster img {
  display: block;
  margin: 0 auto;
  max-height: 100%;
  padding: 0;
  width: 100%;
}

/* Hide the poster when native controls are used otherwise it covers them */
.video-js.vjs-using-native-controls .vjs-poster {
  display: none;
}

/* Text Track Styles */
/* Overall track holder for both captions and subtitles */
.video-js .vjs-text-track-display {
  text-align: center;
  position: absolute;
  bottom: 4em;
  /* Leave padding on left and right *///
  left: 1em;
  right: 1em;
}
/* Individual tracks */
.video-js .vjs-text-track {
  display: none;
  font-size: 1.4em;
  text-align: center;
  margin-bottom: 0.1em;
  /* Transparent black background, or fallback to all black (oldIE) *///
  .background-color-with-alpha(rgb(0, 0, 0), 0.5);
}
.video-js .vjs-subtitles { color: #fff /* Subtitles are white */; }
.video-js .vjs-captions { color: #fc6 /* Captions are yellow */; }
.vjs-tt-cue { display: block; }

/* Hide disabled or unsupported controls */
.vjs-default-skin .vjs-hidden { display: none; }

.vjs-lock-showing {
  display: block !important;
  opacity: 1;
  visibility: visible;
}

// MIXINS
// =============================================================================
// Mixins are a LESS feature and are used to add vendor prefixes to CSS rules
// when needed.

// https://developer.mozilla.org/en-US/docs/Web/CSS/box-shadow
.box-shadow (@string: 0 0 1em rgba(0, 0, 0, 0.25)) {
  /* box-shadow *///
  -webkit-box-shadow: @string;
     -moz-box-shadow: @string;
          box-shadow: @string;
}

// https://developer.mozilla.org/en-US/docs/Web/CSS/border-radius
.border-radius (@string: 5px) {
  /* border-radius *///
  -webkit-border-radius: @string;
     -moz-border-radius: @string;
          border-radius: @string;
}

// https://developer.mozilla.org/en-US/docs/Web/CSS/transition
.transition (@string: all 1s linear) {
  /* transition *///
  -webkit-transition: @string;
     -moz-transition: @string;
       -o-transition: @string;
          transition: @string;
}

// https://developer.mozilla.org/en-US/docs/Web/CSS/transition
.transition-delay (@string: 1s) {
  /* transition-delay *///
  -webkit-transition-delay: @string;
     -moz-transition-delay: @string;
       -o-transition-delay: @string;
          transition-delay: @string;
}

// https://developer.mozilla.org/en-US/docs/Web/CSS/animation
.animation (@string: spin 1s infinite linear) {
  /* animation *///
  -webkit-animation: @string;
     -moz-animation: @string;
       -o-animation: @string;
          animation: @string;
}

// https://developer.mozilla.org/en-US/docs/Web/CSS/transform
.transform (@string: rotate(-45deg)) {
  /* transform *///
  -webkit-transform: @string;
     -moz-transform: @string;
      -ms-transform: @string;
       -o-transform: @string;
          transform: @string;
}

// https://developer.mozilla.org/en-US/docs/Web/CSS/user-select
.user-select (@string: none) {
  /* user-select *///
  -webkit-user-select: @string;
     -moz-user-select: @string;
      -ms-user-select: @string;
          user-select: @string;
}

// Hide something visually but keep available for screen readers.
// http://h5bp.com/v
.hide-visually () {
  /* hide-visually *///
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position:
  absolute;
  width: 1px;
}

// Align an object with absolute positioning
// Used to align the Big Play Button in the corners or center
.absolute-align (@align, @margin, @length) when (@align = top) {
  top: @margin;
}
.absolute-align (@align, @margin, @length) when (@align = bottom) {
  bottom: @margin;
}
.absolute-align (@align, @margin, @length) when (@align = left) {
  left: @margin;
}
.absolute-align (@align, @margin, @length) when (@align = right) {
  right: @margin;
}
.absolute-align (@align, @margin, @length) when (@align = center) {
  /* Center it horizontally *///
  left: 50%;
  margin-left: -(@length / 2);
}
.absolute-align (@align, @margin, @length) when (@align = middle) {
  /* Center it vertically *///
  top: 50%;
  margin-top: -(@length / 2);
}

// http://stackoverflow.com/questions/637921/opacity-of-background-but-not-the-text
.background-color-with-alpha (@color, @alpha) {
  @rgba: rgba(red(@color), green(@color), blue(@color), @alpha);
  /* background-color-with-alpha *///
  background-color: @color;
  background-color: @rgba;
  // No longer using MS filters because they break border radius in IE9
  // @argb: argb(@rgba);
  // filter: ~"progid:DXImageTransform.Microsoft.gradient(startColorstr=@{argb}, endColorstr=@{argb})";
  // -ms-filter: ~"progid:DXImageTransform.Microsoft.gradient(startColorstr=@{argb}, endColorstr=@{argb})";
}

.border-color-with-alpha (@color, @alpha) {
  @rgba: rgba(red(@color), green(@color), blue(@color), @alpha);
  /* border-color-with-alpha *///
  border-color: @color;
  border-color: @rgba;
}

// NOTES ON LESS (tracking learnings so we don't forget)
// =============================================================================
// * We want this file to continue to be accessible by people who don't know
//   LESS but know CSS. This means finding the balance between using the most
//   valuable LESS features (e.g. variables) and keeping it looking like CSS.
//   So it's best to avoid advanced LESS features like conditional statements.
//   (we're using one for the big play button position because that's a hot
//   topic)
//
// * We care about the readability of the CSS output of LESS, which means we
//   have to be careful about what features of LESS we use. (if you're building
//   your own skin this may not apply)
//     1. Comments inside of rules (strangely) have an extra line added after
//        them in the CSS output. To avoid this we can add a LESS comment after
//        the CSS comment.
//          /* comment *///
//
//     2. In a rule with nested rules, any comments outside of a rule are moved
//        to the top of the parent rule. i.e. it might look like:
//          /* title of rule 1 */
//          /* title of rule 2 */
//          .rule1 {}
//          .rule2 {}
//        This is why we aren't using nested rules inside of the
//        vjs-default-skin class.

/* -----------------------------------------------------------------------------
The original source of this file lives at
https://github.com/videojs/video.js/blob/master/src/css/video-js.less */