:root {
  --bg-1: #ff2f00;
  --bg-2: #0d00ff;
  --bg-3: #03ffd5;
  --bg-4: #ffe600;
  --ink: #fff6ee;
  --deep: #0a051a;
  --hot-pink: #ff1ec7;
  --lime: #c8ff00;
  --cat-size: 84px;
  --chaos-mult: 1;
  --global-hue: 0deg;
  --px: 0px;
  --py: 0px;
  --neural-boost: 1;
  --theme-glow: #ffffff;
  --theme-ink: #fff6ee;
  --theme-overlay: #ff00aa55;
  --theme-gray: 0;
  --theme-sepia: 0;
  --theme-sat: 1;
  --theme-contrast: 1;
  --theme-bright: 1;
  --theme-invert: 0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
}

body {
  font-family: "Space Grotesk", system-ui, sans-serif;
  color: var(--theme-ink);
  background:
    radial-gradient(circle at 20% 10%, #ffffff66 0, transparent 25%),
    radial-gradient(circle at 88% 82%, #ff00aa99 0, transparent 33%),
    conic-gradient(from 0deg at 50% 50%, var(--bg-1), var(--bg-2), var(--bg-3), var(--bg-4), var(--bg-1));
  background-size: 100% 100%, 100% 100%, 180% 180%;
  animation: bgSpin 18s linear infinite;
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -20vh;
  pointer-events: none;
}

body::before {
  background:
    radial-gradient(ellipse at center, transparent 25%, #07000f80 70%),
    repeating-radial-gradient(circle at 50% 50%, #ffffff0f 0 18px, #00000000 20px 38px);
  mix-blend-mode: screen;
  animation: wobble 12s ease-in-out infinite alternate;
}

body::after {
  background: conic-gradient(from 90deg at 20% 20%, #0000, #fff2 15%, #0000 35%, #fff1 48%, #0000 66%);
  opacity: 0.5;
  animation: haze 16s linear infinite;
}

.orbital-glow {
  position: fixed;
  inset: -20%;
  background:
    radial-gradient(circle at var(--mx, 50%) var(--my, 50%), #fff7 0, #ff00cc55 12%, #00ffe199 27%, #0000 45%),
    radial-gradient(circle at 50% 50%, #0000 0 20%, #06010a 80%);
  mix-blend-mode: screen;
  filter:
    grayscale(var(--theme-gray))
    sepia(var(--theme-sepia))
    saturate(var(--theme-sat))
    contrast(var(--theme-contrast))
    brightness(var(--theme-bright))
    invert(var(--theme-invert));
  pointer-events: none;
  z-index: 1;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(#ffffff16 1px, transparent 1px);
  background-size: 4px 4px;
  opacity: 0.35;
  animation: grain 0.8s steps(2) infinite;
  z-index: 4;
}

#swirl-canvas,
#symbol-field,
#cat-art-layer,
#reset-overlay,
#reset-blast {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

#swirl-canvas {
  z-index: 0;
  mix-blend-mode: screen;
  opacity: 0.85;
  filter:
    hue-rotate(var(--global-hue))
    grayscale(var(--theme-gray))
    sepia(var(--theme-sepia))
    saturate(var(--theme-sat))
    contrast(var(--theme-contrast))
    brightness(var(--theme-bright))
    invert(var(--theme-invert));
  transition: filter 180ms ease;
}

#symbol-field {
  overflow: hidden;
  z-index: 2;
  filter:
    hue-rotate(calc(var(--global-hue) * 0.6))
    grayscale(var(--theme-gray))
    sepia(var(--theme-sepia))
    saturate(var(--theme-sat))
    contrast(var(--theme-contrast))
    brightness(var(--theme-bright))
    invert(var(--theme-invert));
  transition: filter 180ms ease;
}

#cat-art-layer {
  z-index: 2;
  overflow: hidden;
  mix-blend-mode: screen;
}

#reset-overlay {
  z-index: 30;
  background: #000;
  opacity: 0;
  transition: opacity 460ms ease;
}

#reset-overlay.active {
  opacity: 0.94;
}

#reset-blast {
  z-index: 31;
  opacity: 0;
  background:
    radial-gradient(circle at 50% 50%, #fff0 0 18%, #ffef0055 28%, #ff006655 40%, #6200ff55 54%, #0000 70%),
    conic-gradient(from 0deg, #ff0, #ff4d00, #ff00d4, #4d00ff, #00eeff, #ff0);
  mix-blend-mode: screen;
}

#reset-blast.active {
  animation: blackoutBlast 980ms ease-out forwards, blackoutPulse 980ms steps(2, end) forwards;
}

#reset-blast::before,
#reset-blast::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

#reset-blast::before {
  width: 26vmin;
  height: 26vmin;
  background:
    radial-gradient(circle, #fff 0%, #ffe566 12%, #ff5f00 34%, #ff00aa 56%, #5300ff 100%);
  filter: blur(2px);
}

#reset-blast::after {
  width: 8vmin;
  height: 8vmin;
  box-shadow:
    0 0 0 0.5vmin #fff9,
    0 0 0 2.2vmin #ffeb00bb,
    0 0 0 4.6vmin #ff0066aa,
    0 0 0 8vmin #5900ffaa;
}

.reset-swirl-cat {
  position: absolute;
  left: 50%;
  top: 50%;
  font-size: clamp(2.8rem, 12vw, 9rem);
  transform: translate(-50%, -50%);
  opacity: 0;
  text-shadow: 0 0 20px #fff, 0 0 32px var(--theme-glow), 0 0 50px #ff00c8;
  animation: resetCatSpiral 1.85s cubic-bezier(0.2, 0.74, 0.24, 1) forwards;
}

.cat-art-image {
  position: absolute;
  width: min(48vw, 520px);
  max-width: 86vw;
  aspect-ratio: 1 / 1;
  border-radius: 26px;
  object-fit: cover;
  opacity: 0;
  filter: saturate(1.45) contrast(1.1) drop-shadow(0 0 22px color-mix(in oklab, var(--theme-glow), transparent 20%));
  animation: catArtFade var(--ad, 4.8s) ease-in-out forwards;
}

.cat-art-image.real-cat {
  filter: saturate(1.25) contrast(1.15) hue-rotate(6deg) drop-shadow(0 0 22px color-mix(in oklab, var(--theme-glow), transparent 20%));
}

.costume-sticker {
  position: absolute;
  left: var(--sx, 50%);
  top: var(--sy, 50%);
  font-size: clamp(1.5rem, 5.2vw, 3.8rem);
  opacity: 0;
  transform: translate(-50%, -50%) rotate(var(--sr, 0deg));
  text-shadow: 0 0 12px #000, 0 0 16px var(--theme-glow);
  animation: catArtFade var(--ad, 4.8s) ease-in-out forwards;
  pointer-events: none;
}

.float-symbol {
  position: absolute;
  left: var(--sx, 50%);
  top: var(--sy, 50%);
  color: hsl(var(--sh, 200) 100% 72% / 0.8);
  font-size: clamp(1rem, 3vw, 2.3rem);
  transform: translate(-50%, -50%) scale(var(--ss, 1));
  text-shadow: 0 0 20px #000, 0 0 14px currentColor, 0 0 22px var(--theme-glow);
  animation: symbolFloat var(--sd, 9s) linear infinite;
}

body.neural-on .float-symbol {
  animation-duration: calc(var(--sd, 9s) * 0.65);
  filter: saturate(1.4);
}

.hero {
  position: fixed;
  top: 1rem;
  left: 1rem;
  right: 1rem;
  z-index: 5;
  text-shadow: 0 0 18px #000, 0 0 22px var(--theme-glow);
  transform: translate3d(calc(var(--px) * 0.024), calc(var(--py) * 0.03), 0);
  transition: transform 120ms linear;
}

.tag {
  margin: 0;
  font-size: clamp(0.75rem, 2vw, 1rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--theme-glow);
}

h1 {
  margin: 0.2rem 0;
  font-family: "Monoton", cursive;
  font-size: clamp(2rem, 10vw, 7rem);
  line-height: 0.9;
  color: #ffe5ff;
  text-shadow:
    0 0 10px #ff59e8,
    0 0 26px #4d73ff,
    0 0 48px #00ffd5;
}

.sub {
  max-width: min(80ch, 70vw);
  margin: 0;
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  background: #05021485;
  border: 1px solid #ffffff2d;
  border-radius: 999px;
  display: inline-block;
  padding: 0.5rem 1rem;
  backdrop-filter: blur(6px);
}


main,
#vibe-stage {
  position: fixed;
  inset: 0;
}

#vibe-stage {
  overflow: hidden;
  isolation: isolate;
  z-index: 3;
}

.vibe-cat {
  position: absolute;
  width: var(--cat-size);
  height: var(--cat-size);
  transform: translate(-50%, -50%);
  will-change: transform, opacity;
  animation: drift var(--dur, 8s) linear forwards;
  filter: drop-shadow(0 0 16px #ff70e6);
  z-index: var(--z, 3);
}

.cat-inner {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff8, #ffffff20 50%, #00000020 100%);
  backdrop-filter: blur(2px);
  animation: dance var(--beat, 0.75s) ease-in-out infinite;
}

.cat-face {
  font-size: clamp(2rem, 6vw, 3.8rem);
  transform-origin: center;
  animation: nod var(--beat, 0.75s) ease-in-out infinite;
}

.cat-accessory {
  position: absolute;
  top: 8%;
  left: 50%;
  width: 74%;
  height: 16%;
  transform: translateX(-50%);
  border-radius: 999px;
  background: linear-gradient(90deg, #00ffd5, #ff00bf, #ffe500);
  filter: blur(0.2px);
}

.cat-note {
  position: absolute;
  top: -20%;
  right: -8%;
  font-size: 1.35rem;
  color: #fffa87;
  animation: noteSpin 1.3s linear infinite;
}

.ripple {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid #ffffff95;
  transform: translate(-50%, -50%);
  animation: ripple 800ms ease-out forwards;
  pointer-events: none;
}

.explosion-particle {
  position: absolute;
  left: var(--x, 50%);
  top: var(--y, 50%);
  font-size: clamp(1rem, 2.4vw, 2.6rem);
  opacity: 0;
  transform: translate(-50%, -50%);
  text-shadow: 0 0 16px #000, 0 0 20px var(--theme-glow);
  animation: explodeFly var(--pd, 1.2s) cubic-bezier(0.2, 0.74, 0.3, 1) forwards;
  pointer-events: none;
}

body.neural-on {
  --neural-boost: 1.5;
}

body.neural-on .orbital-glow {
  opacity: 1;
  filter: saturate(1.35);
}

body.neural-on h1 {
  text-shadow:
    0 0 10px #ff59e8,
    0 0 26px #4d73ff,
    0 0 54px #00ffd5,
    0 0 78px #ff0088;
}

body.theme-flash::before {
  animation-duration: 3.2s;
}

body.reset-chaos {
  animation: resetShake 380ms steps(2, end);
}


@keyframes bgSpin {
  0% { background-position: 0 0, 0 0, 0% 0%; }
  100% { background-position: 0 0, 0 0, 100% 100%; }
}

@keyframes wobble {
  from { transform: translate3d(-3%, 2%, 0) rotate(0deg); }
  to { transform: translate3d(4%, -3%, 0) rotate(7deg); }
}

@keyframes haze {
  from { transform: rotate(0deg) scale(1); }
  to { transform: rotate(360deg) scale(1.1); }
}

@keyframes grain {
  0% { transform: translate(0, 0); }
  25% { transform: translate(1px, -2px); }
  50% { transform: translate(-2px, 1px); }
  75% { transform: translate(2px, 2px); }
  100% { transform: translate(0, 0); }
}

@keyframes dance {
  0%, 100% { transform: rotate(-8deg) scale(1); }
  50% { transform: rotate(9deg) scale(1.12); }
}

@keyframes nod {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  45% { transform: translateY(-6%) rotate(-8deg); }
  55% { transform: translateY(5%) rotate(7deg); }
}

@keyframes noteSpin {
  from { transform: translateY(0) rotate(0deg); opacity: 0.5; }
  50% { transform: translateY(-7px) rotate(18deg); opacity: 1; }
  to { transform: translateY(0) rotate(360deg); opacity: 0.4; }
}

@keyframes drift {
  0% {
    opacity: 0;
    transform: translate(var(--x0), var(--y0)) rotate(0deg) scale(0.5);
  }
  12% {
    opacity: 1;
  }
  50% {
    transform: translate(var(--x1), var(--y1)) rotate(180deg) scale(1.1);
  }
  100% {
    opacity: 0;
    transform: translate(var(--x2), var(--y2)) rotate(380deg) scale(0.4);
  }
}

@keyframes ripple {
  from { opacity: 0.85; transform: translate(-50%, -50%) scale(1); }
  to { opacity: 0; transform: translate(-50%, -50%) scale(18); }
}

@keyframes symbolFloat {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) translate3d(0, 20px, 0) rotate(0deg) scale(var(--ss, 1));
  }
  20% {
    opacity: 0.8;
  }
  70% {
    opacity: 0.9;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) translate3d(var(--tx, 40px), calc(var(--ty, -140px) - 10vh), 0) rotate(300deg) scale(calc(var(--ss, 1) * 1.2));
  }
}

@keyframes explodeFly {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) translate3d(0, 0, 0) rotate(0deg) scale(0.7);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) translate3d(var(--dx, 40px), var(--dy, -50px), 0) rotate(420deg) scale(1.25);
  }
}

@keyframes catArtFade {
  0% { opacity: 0; transform: translate3d(0, 0, 0) scale(0.86); }
  22% { opacity: 0.9; }
  78% { opacity: 0.82; }
  100% { opacity: 0; transform: translate3d(var(--ax, 0px), var(--ay, -18px), 0) scale(1.08); }
}

@keyframes blackoutBlast {
  0% {
    opacity: 0;
    transform: scale(0.2) rotate(0deg);
    filter: saturate(1.3) contrast(1.25);
  }
  20% {
    opacity: 1;
    transform: scale(1.05) rotate(28deg);
  }
  52% {
    opacity: 1;
    transform: scale(1.8) rotate(125deg);
  }
  100% {
    opacity: 0;
    transform: scale(3.4) rotate(260deg);
    filter: saturate(2.2) contrast(1.8);
  }
}

@keyframes blackoutPulse {
  0% { filter: blur(1px) saturate(1.2); opacity: 0; }
  25% { filter: blur(0px) saturate(2.2); opacity: 1; }
  55% { filter: blur(1px) saturate(2.8); opacity: 1; }
  100% { filter: blur(2px) saturate(1.2); opacity: 0; }
}

@keyframes resetShake {
  0% { transform: translate3d(0, 0, 0); }
  25% { transform: translate3d(10px, -6px, 0); }
  50% { transform: translate3d(-10px, 7px, 0); }
  75% { transform: translate3d(7px, 5px, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

@keyframes resetCatSpiral {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.2) rotate(-540deg);
    filter: blur(6px);
  }
  32% {
    opacity: 1;
    filter: blur(0);
  }
  75% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.15) rotate(40deg);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.65) rotate(220deg);
  }
}

@media (max-width: 700px) {
  .hero {
    left: 0.8rem;
    right: 0.8rem;
    top: 0.8rem;
  }

  .sub {
    max-width: 96%;
    border-radius: 14px;
    font-size: clamp(0.9rem, 4.2vw, 1.05rem);
    padding: 0.45rem 0.7rem;
  }

  .cat-art-image {
    width: min(80vw, 420px);
    border-radius: 16px;
  }
}