/* Sine-like vertical bob: one full cycle per duration; stagger delays = wave along "pssst!" */
@keyframes beta-banner-wave {
  0% {
    transform: translateY(0.06em);
  }
  25% {
    transform: translateY(-0.11em);
  }
  50% {
    transform: translateY(0);
  }
  75% {
    transform: translateY(0.11em);
  }
  100% {
    transform: translateY(0.06em);
  }
}

@keyframes beta-banner-sheen {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: -100% 50%;
  }
}

.beta-feedback-banner {
  --beta-banner-font: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
  position: relative;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.beta-feedback-banner::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(57, 255, 20, 0.35),
    rgba(255, 255, 255, 0.22),
    rgba(57, 255, 20, 0.35),
    transparent
  );
  background-size: 220% 100%;
  opacity: 0.65;
  animation: beta-banner-sheen 7s ease-in-out infinite;
  pointer-events: none;
}

.beta-feedback-banner__inner {
  position: relative;
  z-index: 1;
  padding: 0.28rem 0.5rem;
  text-align: center;
}

.beta-feedback-banner__wave {
  display: inline;
  white-space: nowrap;
}

.beta-feedback-banner__wave-char {
  display: inline-block;
  vertical-align: baseline;
  animation: beta-banner-wave 3.2s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
  will-change: transform;
}

.beta-feedback-banner__wave-char:nth-child(1) {
  animation-delay: 0s;
}
.beta-feedback-banner__wave-char:nth-child(2) {
  animation-delay: -0.53s;
}
.beta-feedback-banner__wave-char:nth-child(3) {
  animation-delay: -1.06s;
}
.beta-feedback-banner__wave-char:nth-child(4) {
  animation-delay: -1.6s;
}
.beta-feedback-banner__wave-char:nth-child(5) {
  animation-delay: -2.13s;
}
.beta-feedback-banner__wave-char:nth-child(6) {
  animation-delay: -2.66s;
}

.beta-feedback-banner__rest {
  font-weight: inherit;
}

.beta-feedback-banner__link {
  display: inline-block;
  max-width: 100%;
  font-family: var(--beta-banner-font);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  transition:
    color 0.4s cubic-bezier(0.33, 1, 0.68, 1),
    opacity 0.4s ease,
    text-shadow 0.45s ease;
}

.beta-feedback-banner__link:hover .beta-feedback-banner__wave-char,
.beta-feedback-banner__link:focus-visible .beta-feedback-banner__wave-char {
  animation-play-state: paused;
}

.beta-feedback-banner__link:hover,
.beta-feedback-banner__link:focus-visible {
  color: var(--label);
  opacity: 1;
  text-shadow: 0 0 18px rgba(57, 255, 20, 0.22);
}

.beta-feedback-banner__link:focus-visible {
  outline: 1px solid rgba(57, 255, 20, 0.45);
  outline-offset: 3px;
}

body.page-home .beta-feedback-banner {
  border-bottom-color: rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.5);
}

body.page-home .beta-feedback-banner__link {
  color: rgba(255, 255, 255, 0.48);
}

body.page-home .beta-feedback-banner__link:hover,
body.page-home .beta-feedback-banner__link:focus-visible {
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.18);
}

@media (prefers-reduced-motion: reduce) {
  .beta-feedback-banner::after {
    animation: none;
    opacity: 0.35;
    background: linear-gradient(
      90deg,
      transparent,
      rgba(255, 255, 255, 0.12),
      transparent
    );
  }

  .beta-feedback-banner__wave-char {
    animation: none;
    transform: none;
  }

  .beta-feedback-banner__link {
    opacity: 0.92;
  }
}