_crt.scss

/**
 * AnderShell - Just a small CSS demo
 *
 * Copyright (c) 2011-2018, Anders Evenrud <andersevenrud@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#crt {
  position: relative;
  z-index: 10;
  background: $chassis-background;
  width: 1280px;
  height: 900px;
  max-width: 1280px;
  max-height: 1024px;
  border-radius: $base-unit;
  box-shadow: inset 0.25em 0.25em 2px rgba(255, 255, 255, 0.4), inset -0.25em -0.25em 2px rgba(0, 0, 0, 0.4);
  user-select: none;
  font-size: $font-size;
  transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  perspective: 1000;
}

#screen {
  position: relative;
  z-index: 20;
  width: calc(100% - #{$chassis-margin});
  height: calc(100% - #{$chassis-margin});
  margin-top: $chassis-margin / 2;
  margin-left: $chassis-margin / 2;
  background: #000;
  border-radius: $base-unit;
  overflow: hidden;
  box-shadow: 0 0 1px 3px rgba(10, 10, 10, 0.7);

  &::before {
    @include fill();

    content: '';
    z-index: 70;
    box-shadow: inset 0 0 $base-unit ($base-unit / 2) rgba(#fff, 0.08);
    border-radius: $base-unit;
  }

  &::after {
    @include fill();

    content: '';
    z-index: 60;
    opacity: 0.1;
    background: linear-gradient(rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.2));
  }
}

#wrapper {
  @include fill();

  z-index: 30;
  transform-origin: 50% 50%;
  transform: skewX(0.5deg);
  animation: pulse 5s linear infinite;

  &::before {
    @include fill();

    content: '';
    z-index: 31;
    background: radial-gradient(ellipse at center, rgba($gradient-bottom, 0) 0%, rgba($gradient-bottom, 0.5) 100%);
    pointer-events: none;
  }

  &::after {
    @include fill();

    content: '';
    z-index: 32;
    opacity: 0.5;
    background: radial-gradient(ellipse at center, rgba($gradient-inner, 1) 0%, rgba($gradient-inner, 0) 100%);
    pointer-events: none;
    animation: glow 2s linear infinite;
  }
}

#interlace {
  @include fill();

  z-index: 21;
  opacity: 0.25;
  background: $interlace-background;
  background-size: 100% $interlace-size;
  background-repeat: repeat-y;
}

#envelope {
  @include fill($envelope-margin, $envelope-margin, $envelope-margin, $envelope-margin);

  z-index: 40;
  border-radius: $base-unit / 2;
  background: $envelope-background;
  animation: skew 5s linear infinite;
}

#scanline {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: $base-unit;
  opacity: 0.1;
  background: $scanline-background;
  animation: scanline 1.25s linear infinite;
}

#terminal {
  position: relative;
  width: 100%;
  height: 100%;
  z-index: 50;

  textarea {
    display: block;
    background: transparent;
    resize: none;
    width: 100%;
    height: 100%;
    border: 0 none;
    outline: 0 none;
    box-sizing: border-box;
    pointer-events: none;
    margin: 0;
    overflow: hidden;
    padding: $base-unit;
    color: $output-color;
    text-shadow: 0 0 2px $output-text-shadow;
    font-family: $output-font-family;
    font-size: inherit;
    animation: blur 5s linear infinite;
    line-height: $output-line-height;
    white-space: pre-wrap;
  }
}