:root {
  color-scheme: dark;
  --black: #030507;
  --ink: #070b10;
  --deep: #0d141c;
  --line: rgba(255, 255, 255, 0.075);
  --cyan: #4fffe8;
  --blue: #74a7ff;
  --violet: #b28cff;
  --rose: #ff7abf;
  --white: rgba(255, 255, 255, 0.95);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-width: 320px;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--black);
}

body {
  display: grid;
  place-items: center;
}

button {
  font: inherit;
}

.scene {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 42%, rgba(79, 255, 232, 0.15), transparent 28rem),
    radial-gradient(circle at 50% 60%, rgba(178, 140, 255, 0.10), transparent 32rem),
    linear-gradient(145deg, var(--ink), var(--black) 58%, var(--deep));
  isolation: isolate;
}

.connection-message {
  position: fixed;
  left: 50%;
  bottom: clamp(1.4rem, 5vh, 3rem);
  z-index: 2;
  width: min(calc(100vw - 2rem), 34rem);
  padding: 1rem;
  color: rgba(255, 255, 255, 0.92);
  text-align: center;
  background: rgba(7, 11, 16, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0.5rem;
  box-shadow:
    0 1.2rem 3rem rgba(0, 0, 0, 0.42),
    inset 0 0 0 1px rgba(255, 255, 255, 0.035);
  backdrop-filter: blur(16px);
  transform: translateX(-50%);
}

.connection-message[hidden] {
  display: none;
}

.connection-message p {
  margin: 0 0 0.9rem;
  font: 500 0.98rem/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

.connection-message button {
  min-height: 2.6rem;
  padding: 0 1.1rem;
  color: #071014;
  cursor: pointer;
  background: linear-gradient(135deg, var(--white), var(--cyan));
  border: 0;
  border-radius: 0.45rem;
  box-shadow:
    0 0.7rem 1.6rem rgba(0, 0, 0, 0.24),
    0 0 1.8rem rgba(79, 255, 232, 0.16);
}

.connection-message button:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 3px;
}

.scene::before,
.scene::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
}

.scene::before {
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 4.75rem 4.75rem;
  mask-image: radial-gradient(circle at center, #000 0 36%, transparent 78%);
  opacity: 0.22;
  transform: perspective(38rem) rotateX(64deg) translateY(7rem) scale(1.35);
  transform-origin: 50% 100%;
}

.scene::after {
  background:
    repeating-radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.055) 0 1px, transparent 1px 8px),
    radial-gradient(circle at center, transparent 0 44%, rgba(0, 0, 0, 0.54) 100%);
  mix-blend-mode: screen;
  opacity: 0.08;
}

.loader {
  position: relative;
  width: clamp(12rem, 27vw, 21rem);
  aspect-ratio: 1;
  border-radius: 50%;
  filter:
    drop-shadow(0 1.5rem 4rem rgba(0, 0, 0, 0.8))
    drop-shadow(0 0 5.5rem rgba(79, 255, 232, 0.18));
  transform: rotateX(0deg) rotateY(0deg);
  transform-style: preserve-3d;
  animation: hover 4.8s ease-in-out infinite;
}

.loader::before,
.loader::after,
.aura,
.glass,
.ring,
.sweep,
.core,
.core span {
  position: absolute;
  inset: 0;
  border-radius: 999px;
}

.loader::before {
  content: "";
  inset: 6%;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.13), transparent 28%),
    conic-gradient(from 90deg, transparent, rgba(255, 255, 255, 0.20), transparent 28%, rgba(79, 255, 232, 0.14), transparent 55%);
  filter: blur(1.25rem);
  opacity: 0.84;
  animation: slow-turn 9s linear infinite;
}

.loader::after {
  content: "";
  inset: 14%;
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow:
    inset 0 0 2.6rem rgba(255, 255, 255, 0.05),
    inset 0 0 4.5rem rgba(79, 255, 232, 0.05);
}

.aura {
  inset: -20%;
  background:
    conic-gradient(from 20deg, transparent, rgba(79, 255, 232, 0.28), transparent 26%, rgba(255, 122, 191, 0.18), transparent 60%);
  filter: blur(2rem);
  opacity: 0.78;
  animation: spin 6.5s linear infinite;
}

.glass {
  inset: 6%;
  background:
    radial-gradient(circle at 50% 34%, rgba(255, 255, 255, 0.12), transparent 26%),
    radial-gradient(circle at 50% 58%, rgba(79, 255, 232, 0.08), transparent 40%),
    rgba(255, 255, 255, 0.018);
  border: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.03),
    inset 0 1rem 4rem rgba(255, 255, 255, 0.045),
    inset 0 -2rem 5rem rgba(0, 0, 0, 0.42);
}

.ring::before {
  position: absolute;
  inset: 0;
  content: "";
  border-radius: inherit;
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - var(--thickness)), #000 0);
  mask: radial-gradient(farthest-side, transparent calc(100% - var(--thickness)), #000 0);
}

.ring-one {
  --thickness: clamp(0.28rem, 0.7vw, 0.46rem);
  inset: 0;
  animation: spin 1.45s cubic-bezier(0.72, 0.02, 0.28, 0.98) infinite;
}

.ring-one::before {
  background:
    conic-gradient(from 10deg, transparent 0 18%, var(--cyan) 34%, var(--white) 42%, transparent 58% 72%, rgba(116, 167, 255, 0.42), transparent 82% 100%);
}

.ring-two {
  --thickness: clamp(0.18rem, 0.52vw, 0.34rem);
  inset: 18%;
  animation: spin-reverse 1.05s cubic-bezier(0.72, 0.02, 0.28, 0.98) infinite;
}

.ring-two::before {
  background:
    conic-gradient(from 220deg, transparent 0 14%, var(--blue) 31%, var(--white) 39%, transparent 54% 76%, rgba(255, 122, 191, 0.48), transparent 88% 100%);
}

.ring-three {
  --thickness: clamp(0.13rem, 0.4vw, 0.24rem);
  inset: 35%;
  animation: pulse-spin 1.25s ease-in-out infinite;
}

.ring-three::before {
  background:
    conic-gradient(from 90deg, transparent 0 16%, var(--rose) 40%, var(--violet) 54%, transparent 72% 100%);
}

.sweep {
  inset: 1%;
  background:
    conic-gradient(from 0deg, transparent 0 70%, rgba(255, 255, 255, 0.16), transparent 84% 100%);
  -webkit-mask: radial-gradient(farthest-side, transparent 63%, #000 64% 68%, transparent 69%);
  mask: radial-gradient(farthest-side, transparent 63%, #000 64% 68%, transparent 69%);
  animation: spin 2.2s linear infinite;
}

.core {
  inset: 39%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.62), rgba(79, 255, 232, 0.16) 32%, transparent 58%);
  box-shadow:
    0 0 1rem rgba(255, 255, 255, 0.20),
    0 0 2.25rem rgba(79, 255, 232, 0.36);
  animation: breathe 1.45s ease-in-out infinite;
}

.core span {
  inset: 31%;
  background: linear-gradient(135deg, var(--white), var(--cyan) 55%, var(--blue));
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  box-shadow:
    0 0 0.8rem rgba(255, 255, 255, 0.7),
    0 0 1.6rem rgba(79, 255, 232, 0.5);
  animation: morph 2.6s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(1turn);
  }
}

@keyframes spin-reverse {
  to {
    transform: rotate(-1turn);
  }
}

@keyframes pulse-spin {
  0%,
  100% {
    transform: rotate(0deg) scale(0.88);
    opacity: 0.72;
  }

  50% {
    transform: rotate(190deg) scale(1.08);
    opacity: 1;
  }
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(0.82);
    opacity: 0.66;
  }

  50% {
    transform: scale(1.06);
    opacity: 1;
  }
}

@keyframes hover {
  0%,
  100% {
    transform: translate3d(0, -0.28rem, 0);
  }

  50% {
    transform: translate3d(0, 0.36rem, 0);
  }
}

@keyframes morph {
  0%,
  100% {
    transform: rotate(0deg) scale(0.92);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  }

  50% {
    transform: rotate(180deg) scale(1.08);
    border-radius: 68% 32% 28% 72% / 54% 58% 42% 46%;
  }
}

@keyframes slow-turn {
  to {
    transform: rotate(1turn);
  }
}

@media (prefers-reduced-motion: reduce) {
  .loader,
  .aura,
  .ring,
  .sweep,
  .core {
    animation-duration: 8s;
  }
}