:root {
  color-scheme: dark;
  --glow-x: 68%;
  --glow-y: 24%;
  --screen-brightness: 1;
  --curve-x: 50%;
  --curve-y: 50%;
  --curve-rotate-x: 0deg;
  --curve-rotate-y: 0deg;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  background: #010703;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  font-family: "Segoe UI", Arial, sans-serif;
}

.crt-screen {
  position: fixed;
  inset: -3vmax;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(ellipse at var(--glow-x) var(--glow-y), rgba(178, 255, 165, 0.58), rgba(76, 226, 94, 0.18) 9%, transparent 28%),
    radial-gradient(ellipse at 50% 45%, rgba(7, 118, 43, 0.95), rgba(1, 26, 9, 0.98) 70%, #000301 100%),
    #011006;
  filter: brightness(var(--screen-brightness)) saturate(1.08);
  transform:
    perspective(900px)
    rotateX(var(--curve-rotate-x))
    rotateY(var(--curve-rotate-y));
  transform-origin: center;
  animation: phosphor-flicker 4.4s linear infinite;
}

.crt-screen::before,
.crt-screen::after,
.screen-glow,
.glass-sheen,
.electron-sweep,
.scanlines,
.screen-vignette {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
}

.crt-screen::before {
  z-index: 1;
  background:
    radial-gradient(ellipse at 50% 50%, transparent 58%, rgba(0, 0, 0, 0.54) 82%, rgba(0, 0, 0, 0.88) 100%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.58), transparent 12% 88%, rgba(0, 0, 0, 0.62)),
    linear-gradient(180deg, rgba(0, 0, 0, 0.62), transparent 14% 84%, rgba(0, 0, 0, 0.74));
  box-shadow:
    inset 0 0 4.5rem rgba(0, 0, 0, 0.86),
    inset 0 0 11rem rgba(0, 0, 0, 0.56);
}

.crt-screen::after {
  z-index: 6;
  opacity: 0.33;
  background:
    radial-gradient(ellipse at 50% -16%, rgba(213, 255, 196, 0.2), transparent 38%),
    linear-gradient(180deg, rgba(229, 255, 219, 0.07), transparent 18% 100%);
  mix-blend-mode: screen;
}

.screen-glow {
  z-index: 2;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(28, 255, 92, 0.16), transparent 58%),
    radial-gradient(ellipse at 20% 78%, rgba(123, 255, 90, 0.08), transparent 34%);
  mix-blend-mode: screen;
  animation: glow-pulse 5.6s ease-in-out infinite;
}

.glass-sheen {
  z-index: 7;
  opacity: 0.58;
  background:
    radial-gradient(ellipse at calc(var(--glow-x) + 1%) calc(var(--glow-y) - 2%), rgba(239, 255, 231, 0.45), rgba(170, 255, 164, 0.13) 8%, transparent 23%),
    linear-gradient(108deg, transparent 7%, rgba(255, 255, 255, 0.07) 18%, transparent 32% 100%);
  filter: blur(1.2px);
  mix-blend-mode: screen;
  animation: sheen-drift 8s ease-in-out infinite;
}

.electron-sweep {
  z-index: 5;
  opacity: 0.34;
  background: linear-gradient(
    180deg,
    transparent 0%,
    transparent 44%,
    rgba(151, 255, 149, 0.2) 48%,
    rgba(151, 255, 149, 0.04) 50%,
    transparent 54%,
    transparent 100%
  );
  mix-blend-mode: screen;
  animation: vertical-hold 5.2s linear infinite;
}

.scanlines {
  z-index: 4;
  opacity: 0.5;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.58) 0,
      rgba(0, 0, 0, 0.58) 1px,
      rgba(93, 255, 113, 0.08) 2px,
      rgba(93, 255, 113, 0.08) 3px,
      transparent 4px,
      transparent 6px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.028) 0,
      rgba(255, 255, 255, 0.028) 1px,
      transparent 1px,
      transparent 4px
    );
  background-size: 100% 6px, 4px 100%;
  mix-blend-mode: multiply;
  animation: scanline-crawl 1.2s steps(8) infinite;
}

.screen-vignette {
  z-index: 8;
  background:
    radial-gradient(ellipse at center, transparent 53%, rgba(0, 0, 0, 0.44) 76%, rgba(0, 0, 0, 0.78) 100%),
    radial-gradient(ellipse at 50% 50%, rgba(255, 255, 255, 0.035), transparent 36%);
  box-shadow:
    inset 0 0 2.6rem rgba(0, 0, 0, 0.94),
    inset 0 0 0.8rem rgba(137, 255, 132, 0.13);
}

.terminal {
  position: absolute;
  z-index: 3;
  inset: 3vmax;
  padding: clamp(1.35rem, 4.8vw, 3.2rem) clamp(1rem, 4.8vw, 3.6rem);
  color: #6dff76;
  font-family: "Lucida Console", "Courier New", monospace;
  font-size: clamp(0.82rem, 1.95vw, 1.45rem);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0;
  text-shadow:
    0 0 0.18rem rgba(125, 255, 128, 0.9),
    0 0 0.65rem rgba(61, 255, 83, 0.58),
    0.08rem 0 0 rgba(190, 255, 190, 0.18);
}

.terminal-output {
  width: min(46rem, 91vw);
  max-width: calc(100vw - clamp(2rem, 9vw, 7.2rem));
}

.terminal-line {
  min-height: 1.55em;
  white-space: pre-wrap;
}

.terminal-line.center {
  text-align: center;
}

.terminal-line.tight {
  min-height: 1.24em;
  line-height: 1.24;
}

.terminal-line.spacer {
  min-height: 0.62em;
}

.terminal-line.title {
  display: block;
  width: fit-content;
  min-height: 1.42em;
  padding-right: 2.2em;
  border-bottom: 0.12em solid rgba(109, 255, 118, 0.84);
}

.terminal-link {
  color: inherit;
  text-decoration: none;
  text-shadow: inherit;
  outline: none;
}

.terminal-link:hover,
.terminal-link:focus-visible {
  color: #b9ffb8;
  text-shadow:
    0 0 0.22rem rgba(204, 255, 199, 0.95),
    0 0 0.8rem rgba(92, 255, 103, 0.75),
    0.08rem 0 0 rgba(230, 255, 230, 0.28);
}

.terminal-link:focus-visible {
  box-shadow: 0 0.18em 0 rgba(185, 255, 184, 0.72);
}

.terminal-caret {
  display: inline-block;
  width: 0.62em;
  height: 0.92em;
  margin-left: 0.1em;
  background: currentColor;
  box-shadow:
    0 0 0.22rem rgba(135, 255, 134, 0.9),
    0 0 0.7rem rgba(59, 255, 78, 0.62);
  transform: translateY(0.12em);
  animation: cursor-blink 1.05s steps(1, end) infinite;
}

.boot-shutter {
  position: absolute;
  z-index: 9;
  inset: 0;
  pointer-events: none;
  background: #000;
  transform-origin: center;
  animation: boot-shutter 1.32s cubic-bezier(0.2, 0.78, 0.24, 1) forwards;
}

.boot-shutter::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 0.28rem;
  opacity: 0;
  background: rgba(180, 255, 174, 0.92);
  box-shadow:
    0 0 1rem rgba(145, 255, 144, 0.82),
    0 0 4rem rgba(63, 255, 92, 0.44);
  transform: translateY(-50%);
  animation: boot-line 1.32s ease-out forwards;
}

.boot-shutter.is-finished {
  display: none;
}

@keyframes phosphor-flicker {
  0%,
  100% {
    filter: brightness(calc(var(--screen-brightness) * 0.99)) saturate(1.08);
  }

  12% {
    filter: brightness(calc(var(--screen-brightness) * 1.03)) saturate(1.1);
  }

  13% {
    filter: brightness(calc(var(--screen-brightness) * 0.96)) saturate(1.04);
  }

  32% {
    filter: brightness(calc(var(--screen-brightness) * 1.01)) saturate(1.08);
  }

  33% {
    filter: brightness(calc(var(--screen-brightness) * 0.98)) saturate(1.05);
  }

  72% {
    filter: brightness(calc(var(--screen-brightness) * 1.04)) saturate(1.11);
  }
}

@keyframes glow-pulse {
  0%,
  100% {
    opacity: 0.68;
    transform: scale(1);
  }

  50% {
    opacity: 0.94;
    transform: scale(1.025);
  }
}

@keyframes sheen-drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(-1.2%, 0.8%, 0);
  }
}

@keyframes vertical-hold {
  from {
    transform: translateY(-72%);
  }

  to {
    transform: translateY(72%);
  }
}

@keyframes scanline-crawl {
  to {
    background-position: 0 6px, 4px 0;
  }
}

@keyframes cursor-blink {
  0%,
  52% {
    opacity: 1;
  }

  53%,
  100% {
    opacity: 0;
  }
}

@keyframes boot-shutter {
  0% {
    opacity: 1;
    transform: scaleY(1);
  }

  16% {
    opacity: 1;
    transform: scaleY(0.018);
  }

  24% {
    opacity: 0.98;
    transform: scaleY(0.018);
  }

  42% {
    opacity: 0.42;
    transform: scaleY(1.08);
  }

  72% {
    opacity: 0.08;
  }

  100% {
    opacity: 0;
    transform: scaleY(1);
    visibility: hidden;
  }
}

@keyframes boot-line {
  0%,
  9% {
    opacity: 0;
  }

  16%,
  28% {
    opacity: 1;
  }

  42%,
  100% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }

  .crt-screen {
    transform: none;
  }
}