:root {
  color-scheme: dark;
  --background: #050706;
  --signal: #b6f2cf;
  --signal-bright: #e1ffec;
  --signal-low: rgba(123, 242, 173, 0.28);
  --glitch-red: rgba(255, 84, 108, 0.72);
  --glitch-blue: rgba(64, 211, 255, 0.72);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 48%, rgba(15, 73, 43, 0.22), transparent 36rem),
    var(--background);
  color: var(--signal);
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  content: "";
}

body::before {
  opacity: 0.18;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0, 0, 0, 0.5) 3px,
    rgba(0, 0, 0, 0.5) 4px
  );
}

body::after {
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(154, 255, 196, 0.045) 47%,
    rgba(178, 255, 209, 0.14) 50%,
    rgba(154, 255, 196, 0.045) 53%,
    transparent 100%
  );
  transform: translateY(-100%);
  animation: scan 7s linear infinite;
}

.signal {
  position: relative;
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
  place-items: center;
  isolation: isolate;
}

.signal::before {
  position: absolute;
  width: min(74vw, 60rem);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--signal-low), transparent);
  box-shadow: 0 0 2rem var(--signal-low);
  content: "";
  animation: pulse-line 4s ease-in-out infinite;
}

.signal__name {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--signal);
  font-family: "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Consolas, monospace;
  font-size: clamp(3rem, 11vw, 9.75rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 0.9;
  text-shadow:
    0 0 0.05em var(--signal-bright),
    0 0 0.45em rgba(96, 255, 165, 0.22);
  animation: signal-in 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.signal__muted {
  opacity: 0.52;
}

.signal__focus {
  color: var(--signal-bright);
  text-shadow:
    0 0 0.04em #ffffff,
    0 0 0.22em rgba(117, 255, 175, 0.52),
    0 0 0.8em rgba(74, 255, 148, 0.2);
  animation: nico-ignite 1.45s steps(1, end) 1.25s both;
}

.signal__tld {
  display: inline-block;
  margin-left: 0.28em;
  color: rgba(182, 242, 207, 0.66);
  font-size: 0.3em;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
  text-shadow: 0 0 0.38em rgba(96, 255, 165, 0.28);
  vertical-align: baseline;
}

.signal__name::before,
.signal__name::after {
  position: absolute;
  inset: 0;
  overflow: hidden;
  color: var(--signal);
  content: attr(data-text);
  opacity: 0;
  pointer-events: none;
}

.signal__name::before {
  text-shadow: -0.025em 0 var(--glitch-red);
  animation: glitch-top 6s steps(1, end) 1.7s infinite;
}

.signal__name::after {
  text-shadow: 0.025em 0 var(--glitch-blue);
  animation: glitch-bottom 6s steps(1, end) 1.7s infinite;
}

@keyframes signal-in {
  0% {
    opacity: 0;
    filter: blur(0.16em);
    transform: scaleX(0.1) scaleY(0.015);
  }

  32% {
    opacity: 0.8;
    filter: blur(0.06em);
    transform: scaleX(1) scaleY(0.015);
  }

  58% {
    opacity: 1;
    filter: blur(0);
    transform: scaleX(1) scaleY(1.04);
  }

  72% {
    opacity: 0.42;
  }

  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes nico-ignite {
  0%,
  7%,
  13%,
  22%,
  34% {
    opacity: 0.18;
    filter: brightness(0.35);
  }

  4%,
  10%,
  17%,
  27% {
    opacity: 0.82;
    filter: brightness(1.15);
  }

  38% {
    opacity: 1;
    filter: brightness(1.3);
  }

  43% {
    opacity: 0.3;
    filter: brightness(0.55);
  }

  49% {
    opacity: 0.9;
    filter: brightness(1.08);
  }

  53% {
    opacity: 0.48;
    filter: brightness(0.7);
  }

  58%,
  100% {
    opacity: 1;
    filter: brightness(1);
  }
}

@keyframes glitch-top {
  0%,
  89%,
  93%,
  100% {
    clip-path: inset(0 0 100% 0);
    opacity: 0;
    transform: translate(0);
  }

  90% {
    clip-path: inset(8% 0 64% 0);
    opacity: 0.85;
    transform: translate(-0.035em, -0.01em);
  }

  91% {
    clip-path: inset(42% 0 36% 0);
    opacity: 0.62;
    transform: translate(0.025em, 0);
  }

  92% {
    clip-path: inset(72% 0 12% 0);
    opacity: 0.7;
    transform: translate(-0.015em, 0.01em);
  }
}

@keyframes glitch-bottom {
  0%,
  90%,
  94%,
  100% {
    clip-path: inset(100% 0 0 0);
    opacity: 0;
    transform: translate(0);
  }

  91% {
    clip-path: inset(62% 0 9% 0);
    opacity: 0.75;
    transform: translate(0.03em, 0.015em);
  }

  92% {
    clip-path: inset(20% 0 58% 0);
    opacity: 0.55;
    transform: translate(-0.02em, 0);
  }

  93% {
    clip-path: inset(81% 0 4% 0);
    opacity: 0.8;
    transform: translate(0.015em, -0.01em);
  }
}

@keyframes scan {
  to {
    transform: translateY(100%);
  }
}

@keyframes pulse-line {
  0%,
  100% {
    opacity: 0.3;
    transform: scaleX(0.78);
  }

  50% {
    opacity: 0.75;
    transform: scaleX(1);
  }
}

@media (max-width: 34rem) {
  .signal__name {
    font-size: clamp(2.6rem, 15vw, 5rem);
    letter-spacing: -0.075em;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-delay: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}