:root {
  --font-family-mono: "Courier New", Courier, monospace;

  --size-full-vw: 100vw;
  --size-full-vh: 100vh;
  --size-terminal-font: 16px;
  --size-terminal-line-height: 1.2;

  --space-0: 0;
  --space-2: 10px;
  --space-4: 20px;

  --color-green-phosphor: #66ff66;
  --color-screen-background: #051505;
  --color-black-true: #000000;

  --shadow-phosphor: 0 0 3px rgba(102, 255, 102, 0.55);
  --shadow-vignette: inset 0 0 80px rgba(0, 0, 0, 0.65);

  --scanline-dark: rgba(0, 0, 0, 0.22);
  --scanline-red: rgba(255, 0, 0, 0.015);
  --scanline-green: rgba(0, 255, 0, 0.007);
  --scanline-blue: rgba(0, 0, 255, 0.015);
  --scanline-grid-rhythm: 5px;
  --scanline-subpixel-rhythm: 6px;

  --opacity-visible: 1;
  --opacity-hidden: 0;
  --anim-blink: 1s step-end infinite;
}