a.stupid.cat/css/picker.css

/* oneko skin switcher — standalone picker styles.
   No framework, no CSS variables required. Restyle freely. */

/* https://github.com/doughmination/oneko.clove.is-a.dev/releases/tag/v1.0.0 */

#oneko {
  position: fixed;
  width: 32px;
  height: 32px;
  image-rendering: pixelated;
  z-index: 2147483647;
  pointer-events: none;
}

.cat-picker {
  position: fixed;
  inset: 0;
  z-index: 2147483646;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(17, 17, 27, 0.72);
  backdrop-filter: blur(4px);
  padding: 20px;
}

.cat-picker[hidden] {
  display: none;
}

.cat-picker-panel {
  background: #181825;
  color: #cdd6f4;
  border: 1px solid #313244;
  border-radius: 14px;
  width: min(720px, 100%);
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, sans-serif;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.cat-picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid #313244;
  font-weight: 700;
}

.cat-picker-close {
  background: none;
  border: none;
  color: #a6adc8;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.cat-picker-close:hover {
  color: #f38ba8;
}

.cat-grid {
  overflow-y: auto;
  padding: 18px 20px;
}

.cat-section {
  margin-bottom: 18px;
}

.cat-section-title {
  margin: 0 0 10px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #cba6f7;
}

.cat-section-items {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(74px, 1fr));
}

.cat-option {
  background: #1e1e2e;
  border: 1px solid #313244;
  border-radius: 10px;
  padding: 10px 6px 8px;
  cursor: pointer;
  color: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition:
    border-color 0.12s,
    transform 0.1s,
    background 0.12s;
}

.cat-option:hover {
  border-color: #cba6f7;
  transform: translateY(-2px);
  background: #313244;
}

.cat-option.current {
  border-color: #cba6f7;
  background: #313244;
  box-shadow: inset 0 0 0 1px #cba6f7;
}

.cat-option .cat-preview {
  width: 32px;
  height: 32px;
  image-rendering: pixelated;
  background-repeat: no-repeat;
  border-radius: 4px;
}

.cat-option .cat-name {
  font-size: 0.68rem;
  color: #bac2de;
  text-align: center;
  line-height: 1.1;
  word-break: break-word;
}

.cat-hint {
  margin: 0;
  padding: 12px 20px;
  border-top: 1px solid #313244;
  font-size: 0.78rem;
  color: #a6adc8;
  text-align: center;
}

.cat-hide-btn {
  background: none;
  border: none;
  color: #f38ba8;
  cursor: pointer;
  font-size: 0.78rem;
  padding: 0;
}

.cat-hide-btn:hover {
  text-decoration: underline;
}

.oneko-show-btn {
  position: fixed;
  left: 14px;
  bottom: 14px;
  z-index: 2147483646;
  background: #1e1e2e;
  color: #bac2de;
  border: 1px solid #313244;
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 0.8rem;
  cursor: pointer;
  opacity: 0.85;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
  font-family: system-ui, sans-serif;
}

.oneko-show-btn:hover {
  opacity: 1;
  border-color: #cba6f7;
  color: #cdd6f4;
}

kbd {
  background: #313244;
  border: 1px solid #585b70;
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 0.05em 0.45em;
  font-size: 0.85em;
}

.cat-toast {
  position: fixed;
  left: 50%;
  bottom: 4.5rem;
  transform: translateX(-50%) translateY(8px);
  z-index: 2147483647;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--crust);
  border: 1px solid var(--pink);
  color: var(--text);
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.cat-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.cat-picker {
  position: fixed;
  inset: 0;
  z-index: 2147483646;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(17, 17, 27, 0.65);
  backdrop-filter: blur(2px);
}

.cat-picker[hidden] {
  display: none;
}

.cat-picker-panel {
  width: min(94vw, 430px);
  max-height: 82vh;
  overflow-y: auto;
  background: var(--base);
  border: 1px solid var(--surface-1);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55);
}

.cat-picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  font-weight: 700;
  color: var(--pink);
}

.cat-picker-close {
  background: none;
  border: none;
  color: var(--subtext-0);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 0.25rem;
}

.cat-picker-close:hover {
  color: var(--text);
}

.cat-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cat-section-title {
  margin: 0 0 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mauve);
  border-bottom: 1px solid var(--surface-1);
  padding-bottom: 0.3rem;
}

.cat-section-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}

.cat-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.75rem 0.4rem 0.6rem;
  border-radius: 12px;
  background: var(--surface-0);
  border: 1px solid var(--surface-1);
  color: var(--text);
  font-family: inherit;
  font-size: 0.74rem;
  text-align: center;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    border-color 0.15s ease;
}

.cat-option:hover:not(.locked) {
  transform: translateY(-2px);
  border-color: var(--pink);
}

.cat-option.current {
  border-color: var(--pink);
  box-shadow: inset 0 0 0 1px var(--pink);
}

.cat-option.locked {
  cursor: default;
  opacity: 0.75;
}

.cat-preview {
  /* 30px window + the -97px,-97px position = the idle frame inset 1px on
     every side, so no preview can catch pixels from neighbouring frames */
  width: 30px;
  height: 30px;
  margin: 7px 1px 11px;
  background-repeat: no-repeat;
  image-rendering: pixelated;
  transform: scale(1.7);
  transform-origin: center;
}

.cat-name {
  font-weight: 500;
}

.cat-hint {
  margin: 0.85rem 0 0;
  font-size: 0.68rem;
  color: var(--subtext-0);
  text-align: center;
}