.screen {
  isolation: isolate;
}

.crt-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.14;
  background-image:
    radial-gradient(circle at 50% 38%, transparent 0%, rgba(4, 10, 9, 0.22) 66%, rgba(0, 0, 0, 0.36) 100%),
    repeating-linear-gradient(
      180deg,
      rgba(199, 255, 223, 0.03) 0,
      rgba(199, 255, 223, 0.03) 1px,
      rgba(0, 0, 0, 0.014) 1px,
      rgba(0, 0, 0, 0.014) 3px
    );
}

.screen::before,
.screen::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.screen::before {
  background: linear-gradient(90deg, rgba(130, 185, 156, 0.01), rgba(132, 178, 205, 0.006));
  mix-blend-mode: screen;
}

.screen::after {
  background: radial-gradient(circle at 50% 50%, transparent 48%, rgba(0, 0, 0, 0.18) 100%);
  opacity: 0.68;
}

body[data-flicker='on'] .crt-overlay {
  animation: crt-flicker 11s infinite;
}

@keyframes crt-flicker {
  0%,
  12%,
  100% {
    opacity: 0.14;
  }

  12.2% {
    opacity: 0.125;
  }

  55% {
    opacity: 0.146;
  }

  55.3% {
    opacity: 0.127;
  }
}

body.no-crt .crt-overlay,
body.no-crt .screen::before,
body.no-crt .screen::after {
  display: none;
}

body.no-vignette .screen::after {
  display: none;
}

h1,
.subtitle,
.status-line,
.payload-content,
label,
button,
input {
  text-shadow: 0 0 5px rgba(115, 165, 141, 0.18);
}

.ftrlg-logo {
  width: min(152px, 35vw);
  min-height: 16px;
  margin: 0;
  opacity: 0.56;
}

.ftrlg-logo.is-disabled,
.ftrlg-logo.is-missing {
  opacity: 0;
}

.ftrlg-logo img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 4px rgba(100, 158, 131, 0.16));
}

.pixel-bird {
  position: fixed;
  right: clamp(8px, 2vw, 16px);
  bottom: clamp(8px, 2vw, 12px);
  width: 14px;
  height: 12px;
  opacity: 0.27;
  pointer-events: none;
  z-index: 1;
  color: color-mix(in srgb, #9cbdaf 78%, #d2e4de);
}

.pixel-bird svg {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

.pixel-bird .wing {
  animation: bird-flap 0.2s steps(1, end) infinite;
  transform-origin: 7px 6px;
}

.pixel-bird .wing-b {
  animation-delay: 0.1s;
}

@keyframes bird-flap {
  0%,
  49% {
    opacity: 1;
  }

  50%,
  100% {
    opacity: 0.6;
  }
}

@media (max-width: 640px) {
  .ftrlg-logo {
    width: min(126px, 42vw);
  }

  .pixel-bird {
    opacity: 0.2;
    right: 6px;
    bottom: 6px;
  }
}