altcha.css

.altcha {
  background: var(--altcha-color-base, transparent);
  border: var(--altcha-border-width, 1px) solid
    var(--altcha-color-border, #a0a0a0);
  border-radius: var(--altcha-border-radius, 3px);
  color: var(--altcha-color-text, currentColor);
  display: flex;
  flex-direction: column;
  max-width: var(--altcha-max-width, 260px);
  position: relative;
  text-align: left;
}

.altcha:focus-within {
  border-color: var(--altcha-color-border-focus, currentColor);
}

.altcha[data-floating] {
  background: var(--altcha-color-base, white);
  display: none;
  filter: drop-shadow(3px 3px 6px rgba(0,0,0,0.2));
  left: -100%;
  position: fixed;
  top: -100%;
  width: var(--altcha-max-width, 260px);
  z-index: 999999;
}

.altcha[data-floating="top"] .altcha-anchor-arrow {
  border-bottom-color: transparent;
  border-top-color: var(--altcha-color-border, #a0a0a0);
  bottom: -12px;
  top: auto;
}

.altcha[data-floating="bottom"]:focus-within::after {
  border-bottom-color: var(--altcha-color-border-focus, currentColor);
}

.altcha[data-floating="top"]:focus-within::after {
  border-top-color: var(--altcha-color-border-focus, currentColor);
}

.altcha[data-floating]:not([data-state="unverified"]) {
  display: block;
}

.altcha-anchor-arrow {
  border: 6px solid transparent;
  border-bottom-color: var(--altcha-color-border, #a0a0a0);
  content: '';
  height: 0;
  left: 12px;
  position: absolute;
  top: -12px;
  width: 0;
}

.altcha-main {
  align-items: center;
  display: flex;
  gap: 0.4rem;
  padding: 0.7rem;
}

.altcha-label {
  flex-grow: 1;
}

.altcha-label label {
  cursor: pointer;
}

.altcha-logo {
  color: currentColor;
  opacity: 0.3;
}

.altcha-logo:hover {
  opacity: 1;
}

.altcha-error {
  color: var(--altcha-color-error-text, #f23939);
  display: flex;
  font-size: 0.85rem;
  gap: 0.3rem;
  padding: 0 0.7rem 0.7rem;
}

.altcha-footer {
  align-items: center;
  background-color: var(--altcha-color-footer-bg, transparent);
  display: flex;
  font-size: 0.75rem;
  opacity: 0.4;
  padding: 0.2rem 0.7rem;
  text-align: right;
}

.altcha-footer:hover {
  opacity: 1;
}

.altcha-footer > *:first-child {
  flex-grow: 1;
}

.altcha-footer :global(a) {
  color: currentColor;
}

.altcha-checkbox {
  display: flex;
  align-items: center;
  height: 24px;
  width: 24px;
}

.altcha-checkbox input {
  width: 18px;
  height: 18px;
  margin: 0;
}

.altcha-hidden {
  display: none;
}

.altcha-spinner {
  animation: altcha-spinner 0.75s infinite linear;
  transform-origin: center;
}

@keyframes altcha-spinner {
  100% {
    transform: rotate(360deg);
  }
}