.lens-cloudscape {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity 420ms ease;
}

.lens-cloud-group {
  position: absolute;
  top: clamp(168px, 20vh, 210px);
  left: 0;
  width: clamp(300px, 34vw, 440px);
  height: clamp(96px, 9vw, 128px);
  opacity: 0.72;
  transform: translate3d(-105%, 0, 0);
  animation: lens-cloud-drift 34s linear -15.2s infinite;
  will-change: transform;
}

.lens-cloud {
  position: absolute;
  width: 62%;
  height: 22%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.32);
  filter: blur(0.8px);
  animation: lens-cloud-stagger 22s ease-in-out infinite alternate;
  will-change: transform;
}

.lens-cloud::before,
.lens-cloud::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: inherit;
}

.lens-cloud::before {
  left: 16%;
  bottom: 0;
  width: 44%;
  height: 250%;
}

.lens-cloud::after {
  right: 10%;
  bottom: 0;
  width: 54%;
  height: 185%;
}

.lens-cloud:nth-child(1) {
  left: 0;
  top: 54%;
  opacity: 0.84;
  animation-delay: -4s;
}

.lens-cloud:nth-child(2) {
  left: 24%;
  top: 8%;
  opacity: 0.64;
  animation-delay: -11s;
}

.lens-cloud:nth-child(3) {
  right: 0;
  top: 42%;
  opacity: 0.5;
  animation-delay: -17s;
}

html[data-theme="light"] .lens-cloudscape {
  opacity: 1;
}

html[data-theme="dark"] .lens-cloudscape {
  opacity: 0;
}

@keyframes lens-cloud-drift {
  from {
    transform: translate3d(-105%, 0, 0);
  }

  to {
    transform: translate3d(calc(100vw + 5%), 0, 0);
  }
}

@keyframes lens-cloud-stagger {
  from {
    transform: translate3d(-7px, 2px, 0);
  }

  to {
    transform: translate3d(14px, -2px, 0);
  }
}

.thread-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid rgba(216, 180, 119, 0.42);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  color: #f1ece0;
  font: 9px/1 var(--mono, "DM Mono", monospace);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.thread-theme-toggle .theme-icon {
  color: #d8b477;
  font-size: 14px;
  line-height: 1;
}

.thread-theme-toggle .theme-label {
  display: inline;
  white-space: nowrap;
}

.thread-theme-toggle:is(:hover, :focus-visible) {
  border-color: #d8b477;
  background: #d8b477;
  color: #1b211c;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.18);
}

.thread-theme-toggle:is(:hover, :focus-visible) .theme-icon {
  color: inherit;
}

.thread-theme-toggle:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

html[data-theme="light"] .thread-theme-toggle {
  border-color: rgba(57, 86, 67, 0.34);
  background: rgba(255, 255, 255, 0.42);
  color: #263a2e;
}

html[data-theme="light"] .thread-theme-toggle .theme-icon {
  color: #8e5c2f;
}

html[data-theme="light"] .thread-theme-toggle:is(:hover, :focus-visible) {
  border-color: #356f50;
  background: #356f50;
  color: #fffdf6;
}

.nyarindo-thread-footer > .thread-theme-toggle,
.experiment-signoff > .thread-theme-toggle {
  flex: 0 0 auto;
  margin-left: auto;
}

@media (max-width: 650px) {
  .nyarindo-thread-footer > .thread-theme-toggle,
  .experiment-signoff > .thread-theme-toggle {
    align-self: flex-start;
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lens-cloud-group {
    animation: none;
    transform: translate3d(clamp(18px, 18vw, 240px), 0, 0);
    will-change: auto;
  }

  .lens-cloud {
    animation: none;
    will-change: auto;
  }

  .thread-theme-toggle {
    transition: none;
  }
}

.download-support-notice {
  --download-support-bg: rgba(14, 22, 18, 0.97);
  --download-support-ink: #f6f2e7;
  --download-support-muted: #bcc9bd;
  --download-support-line: rgba(142, 181, 162, 0.32);
  --download-support-gold: #e0b979;
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 1500;
  display: grid;
  gap: 15px;
  width: min(470px, calc(100vw - 36px));
  padding: 20px;
  border: 1px solid var(--download-support-line);
  border-radius: 18px;
  background:
    radial-gradient(circle at 100% 0, rgba(88, 157, 116, 0.18), transparent 42%),
    linear-gradient(145deg, rgba(23, 31, 25, 0.98), var(--download-support-bg));
  color: var(--download-support-ink);
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.42);
  animation: download-support-arrive 260ms ease-out both;
}

.download-support-notice[hidden] {
  display: none;
}

.download-support-eyebrow {
  margin: 0 0 7px;
  color: var(--download-support-gold);
  font: 9px/1.4 var(--mono, monospace);
  letter-spacing: 0.14em;
}

.download-support-title {
  display: block;
  font: 400 clamp(21px, 3vw, 27px)/1.08 var(--serif, Georgia, serif);
}

.download-support-body {
  margin: 9px 0 0;
  color: var(--download-support-muted);
  font-size: 12px;
  line-height: 1.65;
}

.download-support-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.download-support-link,
.download-support-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--download-support-line);
  border-radius: 999px;
  font: 9px/1.3 var(--mono, monospace);
  letter-spacing: 0.06em;
}

.download-support-link {
  background: var(--download-support-gold);
  color: #17130e;
}

.download-support-close {
  background: transparent;
  color: var(--download-support-muted);
  cursor: pointer;
}

.download-support-link:is(:hover, :focus-visible),
.download-support-close:is(:hover, :focus-visible) {
  border-color: var(--download-support-gold);
  outline: none;
}

html[data-theme="light"] .download-support-notice {
  --download-support-bg: rgba(250, 247, 237, 0.98);
  --download-support-ink: #25352b;
  --download-support-muted: #596b5f;
  --download-support-line: rgba(72, 103, 81, 0.28);
  --download-support-gold: #8e5b28;
  box-shadow: 0 24px 70px rgba(40, 52, 41, 0.2);
}

html .reader-dialog .download-support-notice {
  --download-support-bg: rgba(8, 19, 15, 0.99);
  --download-support-ink: #fffaf0;
  --download-support-muted: #d1dad2;
  --download-support-line: rgba(224, 185, 121, 0.42);
  --download-support-gold: #f0c77f;
  background:
    radial-gradient(circle at 100% 0, rgba(88, 157, 116, 0.24), transparent 42%),
    linear-gradient(145deg, rgba(24, 35, 28, 0.995), var(--download-support-bg));
  color: var(--download-support-ink);
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.62);
}

@keyframes download-support-arrive {
  from {
    transform: translateY(12px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 520px) {
  .download-support-notice {
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 12px;
    width: auto;
    padding: 17px;
  }

  .download-support-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .download-support-link,
  .download-support-close {
    width: 100%;
    min-height: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .download-support-notice {
    animation: none;
  }
}