.signal-page {
  --pointer-x: 50vw;
  --pointer-y: 50vh;
  isolation: isolate;
  min-height: 100svh;
  background:
    radial-gradient(circle at 18% 24%, rgba(255, 75, 66, 0.16), transparent 22rem),
    radial-gradient(circle at 78% 20%, rgba(34, 215, 255, 0.16), transparent 24rem),
    radial-gradient(circle at 54% 82%, rgba(255, 138, 61, 0.12), transparent 22rem),
    linear-gradient(135deg, #030506 0%, #091111 45%, #030506 100%);
}

.signal-page::before,
.signal-page::after,
.signal-grid,
.signal-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.signal-page::before {
  content: "";
  z-index: -1;
  background:
    radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(34, 215, 255, 0.16), transparent 16rem),
    linear-gradient(90deg, rgba(3, 5, 6, 0.42), transparent 36%, transparent 64%, rgba(3, 5, 6, 0.54)),
    linear-gradient(0deg, rgba(3, 5, 6, 0.86), transparent 32%, transparent 72%, rgba(3, 5, 6, 0.65));
}

.signal-page::after {
  content: "";
  z-index: 3;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 50%, transparent 50%),
    radial-gradient(circle at 50% 50%, transparent 0%, transparent 62%, rgba(0, 0, 0, 0.62) 100%);
  background-size: 100% 4px, 100% 100%;
  mix-blend-mode: screen;
  opacity: 0.52;
}

.signal-grid {
  z-index: -4;
  background:
    linear-gradient(rgba(231, 255, 248, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(231, 255, 248, 0.05) 1px, transparent 1px),
    linear-gradient(135deg, transparent, rgba(255, 75, 66, 0.055) 48%, rgba(34, 215, 255, 0.06) 52%, transparent 64%);
  background-size: 4rem 4rem, 4rem 4rem, 100% 100%;
  mask-image: linear-gradient(to bottom, transparent 0%, black 12%, black 82%, transparent 100%);
}

.signal-grid::before,
.signal-grid::after {
  content: "";
  position: absolute;
  inset: -25%;
  background: linear-gradient(115deg, transparent 0%, rgba(34, 215, 255, 0.13) 45%, transparent 58%);
  animation: signalSweep 10s linear infinite;
}

.signal-grid::after {
  background: linear-gradient(65deg, transparent 0%, rgba(255, 75, 66, 0.1) 48%, transparent 62%);
  animation-duration: 14s;
  animation-direction: reverse;
}

.signal-canvas {
  z-index: -3;
  width: 100%;
  height: 100%;
}

.signal-shell {
  position: relative;
  z-index: 4;
  display: grid;
  min-height: 100svh;
  place-items: center;
  padding: 2rem;
}

.signal-shell::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(62rem, 88vw);
  aspect-ratio: 1;
  border: 1px solid rgba(231, 255, 248, 0.08);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(circle, rgba(3, 5, 6, 0.28) 0%, rgba(3, 5, 6, 0.08) 38%, transparent 68%);
  filter: blur(0.2px);
  pointer-events: none;
}

.signal-shell--variants {
  align-items: center;
  justify-items: center;
}

.button-variants {
  display: grid;
  grid-template-columns: repeat(2, minmax(17rem, 1fr));
  gap: 1rem;
  width: min(100%, 43rem);
  padding: 0.6rem;
}

.signal-telegram {
  --telegram-blue: #22d7ff;
  --telegram-deep: #0b1b22;
  --telegram-red: #ff4b42;
  --telegram-orange: #ff8a3d;
  --telegram-green: #68f7a4;
  isolation: isolate;
  gap: 0.92rem;
  min-height: 4.75rem;
  margin: 0;
  padding: 0 1.22rem 0 0.92rem;
  border-color: rgba(34, 215, 255, 0.74);
  border-radius: 0.9rem;
  background:
    linear-gradient(135deg, rgba(34, 215, 255, 0.18), rgba(34, 215, 255, 0.03) 46%, rgba(255, 138, 61, 0.08)),
    rgba(4, 11, 14, 0.82);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 52px rgba(34, 215, 255, 0.24),
    0 24px 96px rgba(0, 0, 0, 0.42);
  color: #f3fbf8;
  font: 800 clamp(1rem, 2vw, 1.12rem)/1 var(--font-display);
  backdrop-filter: blur(18px);
}

.signal-telegram::before {
  content: "";
  position: absolute;
  inset: -2px;
  z-index: -1;
  border-radius: inherit;
  background:
    linear-gradient(90deg, var(--telegram-blue), var(--telegram-red), var(--telegram-orange), var(--telegram-green), var(--telegram-blue));
  filter: blur(18px);
  opacity: 0.42;
  animation: telegramGlow 4s linear infinite;
}

.signal-telegram::after {
  inset: 0.34rem;
  border-color: rgba(2, 7, 7, 0.22);
  border-radius: 0.65rem;
}

.telegram-icon {
  display: grid;
  flex: 0 0 auto;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border-radius: 0.72rem;
  background: linear-gradient(135deg, #1bb8ff, #0077b9);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.2) inset,
    0 14px 34px rgba(34, 215, 255, 0.28);
  color: #ffffff;
}

.telegram-icon svg {
  width: 1.65rem;
  height: 1.65rem;
  fill: currentColor;
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.35));
}

.telegram-text {
  display: grid;
  min-width: 0;
}

.telegram-text strong {
  color: #f7fffc;
  font-size: 1em;
  letter-spacing: 0;
  white-space: nowrap;
}

.telegram-variant {
  width: 100%;
  justify-content: flex-start;
}

.telegram-variant--blue {
  border-color: rgba(34, 215, 255, 0.94);
  background:
    linear-gradient(135deg, rgba(31, 183, 255, 0.95), rgba(0, 118, 184, 0.94)),
    rgba(4, 11, 14, 0.88);
  color: #ffffff;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.18) inset,
    0 0 58px rgba(34, 215, 255, 0.32),
    0 24px 88px rgba(0, 118, 184, 0.22);
}

.telegram-variant--blue::before {
  opacity: 0.22;
}

.telegram-variant--blue .telegram-icon {
  background: rgba(255, 255, 255, 0.16);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.24) inset,
    0 12px 30px rgba(0, 0, 0, 0.2);
}

.telegram-variant--outline {
  border-color: rgba(34, 215, 255, 0.76);
  background:
    linear-gradient(135deg, rgba(34, 215, 255, 0.08), rgba(255, 255, 255, 0.025)),
    rgba(2, 7, 9, 0.66);
  box-shadow:
    0 0 0 1px rgba(34, 215, 255, 0.2) inset,
    0 0 46px rgba(34, 215, 255, 0.18);
}

.telegram-variant--outline::before {
  opacity: 0.16;
}

.telegram-variant--outline .telegram-icon {
  background: transparent;
  border: 1px solid rgba(34, 215, 255, 0.52);
  color: #22d7ff;
}

.telegram-variant--terminal {
  border-color: rgba(104, 247, 164, 0.56);
  background:
    linear-gradient(90deg, rgba(104, 247, 164, 0.09), transparent),
    rgba(3, 8, 7, 0.8);
  box-shadow:
    0 0 0 1px rgba(104, 247, 164, 0.14) inset,
    0 0 44px rgba(104, 247, 164, 0.14);
  font-family: var(--font-mono);
}

.telegram-variant--terminal::before {
  background: linear-gradient(90deg, rgba(104, 247, 164, 0.64), rgba(34, 215, 255, 0.42));
  opacity: 0.18;
}

.telegram-variant--terminal .telegram-icon {
  background: rgba(104, 247, 164, 0.11);
  color: #68f7a4;
}

.signal-telegram:hover {
  border-color: rgba(255, 255, 255, 0.72);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.2) inset,
    0 0 72px rgba(34, 215, 255, 0.36),
    0 32px 120px rgba(34, 215, 255, 0.16);
}

@keyframes signalSweep {
  from {
    transform: translate3d(-35%, 0, 0);
  }
  to {
    transform: translate3d(35%, 0, 0);
  }
}

@keyframes telegramGlow {
  from {
    filter: blur(16px) hue-rotate(0deg);
  }
  to {
    filter: blur(16px) hue-rotate(360deg);
  }
}

@media (max-width: 620px) {
  .signal-shell {
    padding: 1rem;
  }

  .signal-telegram {
    width: min(100%, 21rem);
    min-height: 4.25rem;
    justify-content: flex-start;
    padding-right: 0.82rem;
    font-size: 0.95rem;
  }

  .button-variants {
    grid-template-columns: 1fr;
    width: min(100%, 22rem);
    gap: 0.8rem;
  }

  .telegram-variant {
    width: 100%;
  }

  .telegram-icon {
    width: 2.75rem;
    height: 2.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .signal-grid::before,
  .signal-grid::after,
  .signal-telegram::before {
    animation: none;
  }
}