/*
 * Ambient sky for both dashboard surfaces.
 *
 * Two star layers drifting at different speeds plus one comet. The whole thing lives in the top
 * band only and is faded to nothing by a mask before the first row of data, so numbers and
 * addresses always sit on flat ground. Remove the `dashboard-sky.css` import from styles.css
 * (and the include in build.gradle) to switch the background off entirely.
 */

.dashboard-sky {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 0;
  height: var(--dash-sky-height);
  overflow: hidden;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 38%, rgba(0, 0, 0, .35) 72%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 38%, rgba(0, 0, 0, .35) 72%, transparent 100%);
}

.dashboard-stars {
  position: absolute;
  inset: -50%;
  background-repeat: repeat;
}

.dashboard-stars--far {
  background-image:
    radial-gradient(1.4px 1.4px at 40px 62px, rgba(255, 255, 255, .75), transparent),
    radial-gradient(1.1px 1.1px at 182px 218px, rgba(198, 220, 255, .6), transparent),
    radial-gradient(1px 1px at 318px 122px, rgba(255, 255, 255, .5), transparent),
    radial-gradient(1.5px 1.5px at 262px 376px, rgba(237, 230, 217, .6), transparent),
    radial-gradient(1px 1px at 92px 428px, rgba(255, 255, 255, .42), transparent);
  background-size: 470px 470px;
  opacity: .75;
  animation: dashboard-drift 320s linear infinite;
}

.dashboard-stars--near {
  background-image:
    radial-gradient(1px 1px at 58px 138px, rgba(255, 255, 255, .5), transparent),
    radial-gradient(1.2px 1.2px at 228px 42px, rgba(170, 205, 255, .55), transparent),
    radial-gradient(1px 1px at 132px 298px, rgba(255, 255, 255, .35), transparent);
  background-size: 310px 310px;
  opacity: .55;
  animation: dashboard-drift 180s linear infinite, dashboard-twinkle 7s ease-in-out infinite;
}

@keyframes dashboard-drift {
  to { transform: translate3d(-470px, 290px, 0); }
}

@keyframes dashboard-twinkle {
  0%, 100% { opacity: .4; }
  50% { opacity: .8; }
}

.dashboard-comet-lane {
  position: absolute;
  top: 2.125rem;
  left: -18%;
  width: 140%;
  transform: rotate(15deg);
  transform-origin: 0 0;
}

.dashboard-comet {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 9px 2px rgba(255, 255, 255, .5);
  opacity: 0;
  animation: dashboard-comet 19s linear infinite;
}

.dashboard-comet::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 2px;
  width: 190px;
  height: 1px;
  transform: translateY(-50%);
  background: linear-gradient(270deg, rgba(255, 255, 255, .7), rgba(91, 149, 255, .22) 46%, transparent);
}

.dashboard-shell--console .dashboard-comet-lane { top: 1.125rem; }
.dashboard-shell--console .dashboard-comet { animation-duration: 26s; animation-delay: 7s; }

@keyframes dashboard-comet {
  0% { opacity: 0; transform: translateX(0); }
  3% { opacity: .9; }
  17% { opacity: .9; }
  22% { opacity: 0; transform: translateX(1700px); }
  100% { opacity: 0; transform: translateX(1700px); }
}

@media (prefers-reduced-motion: reduce) {
  .dashboard-stars--far,
  .dashboard-stars--near { animation: none; }

  .dashboard-comet { animation: none; opacity: 0; }
}