:root {
  --blade-hue: 120;
  --blade-lightness: 50%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  background: #222;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: 100px 50px 1fr;
  min-height: 100vh;
  place-items: center;
  font-family: "Source Sans Pro", sans-serif;
  text-transform: uppercase;
  font-size: 1.5rem;
}

/* The color pickers */

[name="color"] {
  grid-row: 1 / 2;
  align-self: end;
  margin: 0.5em;
}

label:not(.hilt) {
  color: white;
  font-weight: bold;
  align-self: start;
}

/* Lightsaber styling */

.lightsaber {
  margin-top: 25vh;
  grid-column: 1 / -1;
  position: relative;
}

#on-off {
  position: absolute;
  width: 0;
  height: 0;
}

.hilt {
  cursor: pointer;
  display: block;
  width: 0.75rem;
  height: 7rem;
  background-color: red;
  border-radius: 0 0 4px 4px;
  background-image: linear-gradient(
    silver 0 10px,
    hsl(39 75% 50%) 0 14px,
    silver 0 15px,
    black 0 20px,
    silver 0 22px,
    black 0 25px,
    silver 0 27px,
    black 0 30px,
    silver 0 32px,
    black 0 35px,
    silver 0 37px,
    black 0 40px,
    silver 0 42px,
    black 0 45px,
    silver 0 47px,
    black 0 50px,
    silver 0 60px,
    hsl(39 75% 50%) 60px 80px,
    silver 0 100%
  );
}

.blade {
  position: absolute;
  background: white;
  height: 350%;
  width: 100%;
  bottom: 100%;
  border-radius: 100vw 100vw 0 0;
  box-shadow: inset 0 0 4px
      hsl(var(--blade-hue) 100% var(--blade-lightness) / 1),
    0 0 1em hsl(var(--blade-hue) 100% var(--blade-lightness) / 0.8),
    0 0 1.5em hsl(var(--blade-hue) 100% var(--blade-lightness) / 0.7),
    0 0 2em hsl(var(--blade-hue) 100% var(--blade-lightness) / 0.5),
    0 0 3em hsl(var(--blade-hue) 100% var(--blade-lightness) / 0.3),
    0 0 5em hsl(var(--blade-hue) 100% var(--blade-lightness) / 0.2);

  transition: transform 50ms ease-out;
  transform-origin: bottom;
}

.blade::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: hsl(var(--blade-hue) 100% var(--blade-lightness));
  border-radius: inherit;
  filter: blur(0.5em);
  opacity: 1;
  animation: pulse linear 5s infinite;
}

.blade::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  background: white;
  border-radius: inherit;
  z-index: 10;
}

@keyframes pulse {
  50% {
    opacity: 0.5;
  }
}

/* Turn lightsaber on and off */

#on-off:not(:checked) + .blade {
  transform: scaleY(0);
}

#on-off:checked + .blade {
  transform: scaleY(1);
}

/* change the color */

#green:checked ~ .lightsaber {
  --blade-hue: 120;
}

#blue:checked ~ .lightsaber {
  --blade-hue: 195;
}

#yellow:checked ~ .lightsaber {
  --blade-hue: 60;
}

#purple:checked ~ .lightsaber {
  --blade-hue: 290;
}

#red:checked ~ .lightsaber {
  --blade-hue: 360;
}

#darksaber:checked ~ .lightsaber {
  --blade-lightness: 100%;
}

#darksaber:checked ~ .lightsaber .blade {
  border-radius: 100% / 500px 10px 0 0;
}

#darksaber:checked ~ .lightsaber .blade::before {
  background: black;
}

/* play sound */

embed {
  display: none;
  position: absolute;
  opacity: 0;
  pointer-events: 0;
  width: 0;
  height: 0;
}

#on-off:checked ~ embed {
  display: block;
}


/* YT link */
.yt {
  color: hsl(0 0% 100% / .5);
  font-size: 1rem;
  padding: 1em;
  margin: 0 0 1em 0;
  grid-column: 1 / -1;
}

.yt:hover {
  color: white;
  text-shadow:
    0 0 .5em hsl( var(--blade-hue) 50% 50%),
    0 0 1em hsl( var(--blade-hue) 50% 50% / .75);
}