/*!
 * @license
 * The SVG/CSS buffering spinner is based on http://codepen.io/jczimm/pen/vEBpoL
 * Some local modifications have been made.
 *
 * Copyright (c) 2016 by jczimm
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/* This is the spinner SVG itself, which contains a circular path element.
 * It sits inside the play button and fills it. */
.shaka-spinner-svg {
  /* Because of some sizing hacks in the play button (see comments there), this
   * spinner needs to be an overlay child to be properly sized and positioned
   * within the button. */
  .overlay-child();

  /* Keep it spinning! */
  animation: rotate 2s linear infinite;
  transform-origin: center center;

  /* The SVG should fill its container. */
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

/* This is the path element, which draws a circle. */
.shaka-spinner-path {
  /* Fall back for IE 11, where the stroke properties cannot be animated,
   * but the spinner still rotates. */
  stroke: #202124;
  stroke-dasharray: 20, 200;
  stroke-dashoffset: 0;

  /* Animate the stroke of this circular path. */
  animation: dash 1.5s ease-in-out infinite;

  /* Round the line on the ends. */
  stroke-linecap: round;
}

/* Spin the whole SVG. */
@keyframes rotate {
  100% {
    transform: rotate(360deg);
  }
}

/* Pulse the circle's outline forward and backward while it spins. */
@keyframes dash {
  0% {
    stroke-dasharray: 1, 200;
    stroke-dashoffset: 0;
  }

  50% {
    stroke-dasharray: 89, 200;
    stroke-dashoffset: -35px;
  }

  100% {
    stroke-dasharray: 89, 200;
    stroke-dashoffset: -124px;
  }
}
