/* General styles to reset by default styles */
*, *::after, *::before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /*Hue es matiz (color,sonido...) en español. We create more variables*/
  --hue: 100;
  --saturation: 75%;
  --foreground-color: hsl(var(--hue), var(--saturation), 100%);
  --background-color: hsl(var(--hue), var(--saturation), 50%);
}

body {
  background-color: var(--background-color);
  overflow: hidden;
}

/* Color, size and position of the paddles */
.paddle {
  --position: 50;   /*css variable to make reusable code*/

  position: absolute;
  background-color: var(--foreground-color);
  box-shadow: 0px 0px 1px 2px rgba(0,0,0,1);
  /* Making sure they always have the same size no matter the screen */
  width: 1.5vh;
  height: 15vh;
  /* setting the paddles in the middle of the screen vertically */
  top: calc(var(--position) * 1vh);
  transform: translateY(-50%);
}

/* Margin for both paddles */
.paddle.left {
  left: 1vw;
}

.paddle.right {
  right: 1vw;
}
/* //////////////////////// */

/* Styles for the ball */
.ball {
  /* position for the ball */
  --horizontalX: 50;
  --verticalY: 50;

  position: absolute;
  background-color: var(--foreground-color);
  box-shadow: 0px 0px 1px 1.5px rgba(0,0,0,0.75);
  border-radius: 50%;
  /* Making sure it always have the same size no matter the screen */
  width: 2.5vh;
  height: 2.5vh;
  /* setting the ball in the middle of the screen */
  top: calc(var(--verticalY) * 1vh);
  left: calc(var(--horizontalX) * 1vw);
  transform: translate(-50%, -50%);
}

/* Styles for the score */
.score {
  display: flex;
  justify-content: center;
  font-weight: bold;
  font-size: 7vh;
  color: var(--foreground-color);
  user-select: none;
}

.score > * {
  flex-grow: 1;
  flex-basis: 0;
  padding: 0 15vh;
  margin: 1vh 0;
  opacity: 0.7;
}

.score > :first-child {
  text-align: right;
  border-right: 0.5vh solid var(--foreground-color);
}