.demo-showcase {
  --demo-attribution-min-width: 197px;
  --demo-blue: #03a9f4;
  --demo-blue-dark: #0288d1;
  --demo-page-idle-bg: #11161d;
  --demo-surface-idle: rgba(32, 37, 44, 0.88);
  --demo-surface-live: rgba(255, 255, 255, 0.14);
  --demo-border-idle: rgba(255, 255, 255, 0.12);
  --demo-border-live: rgba(255, 255, 255, 0.22);
  --demo-radius: 26px;
  --demo-share-action-size: 120px;
  --demo-share-icon-size: 42px;
  --demo-surface-radius: 22px;
  --demo-surface-padding: 18px;
  --demo-sync-graph-height: 143px;
  --demo-text-primary: #ffffff;
  --demo-text-secondary: rgba(255, 255, 255, 0.72);
  position: relative;
  margin: 2rem 0 2.5rem;
  padding: 1.3rem;
  overflow: hidden;
  border-radius: var(--demo-radius);
  background:
    radial-gradient(circle at top left, rgba(53, 197, 255, 0.2), transparent 34%),
    linear-gradient(160deg, #0f1721 0%, #0d141d 48%, #091018 100%);
  color: var(--demo-text-primary);
  box-shadow: 0 30px 70px rgba(3, 17, 32, 0.28);
  transition:
    background 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.45s ease,
    transform 0.45s ease;
}

.demo-showcase::before,
.demo-showcase::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0;
  transition:
    opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.demo-showcase::before {
  top: -120px;
  left: -140px;
  width: 380px;
  height: 380px;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.24) 0%,
    rgba(255, 255, 255, 0.06) 34%,
    rgba(255, 255, 255, 0) 70%
  );
  filter: blur(12px);
  transform: translate3d(-36px, -18px, 0) scale(0.84);
}

.demo-showcase::after {
  right: -140px;
  bottom: -170px;
  width: 430px;
  height: 430px;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.2) 0%,
    rgba(255, 255, 255, 0.05) 36%,
    rgba(255, 255, 255, 0) 72%
  );
  filter: blur(18px);
  transform: translate3d(28px, 34px, 0) scale(0.9);
}

.demo-showcase.is-listening {
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.2), transparent 32%),
    linear-gradient(135deg, #03a9f4 0%, #1092dd 46%, #11161d 100%);
  box-shadow: 0 35px 80px rgba(3, 31, 56, 0.34);
}

.demo-showcase.is-listening::before,
.demo-showcase.is-listening::after {
  opacity: 1;
  animation: sendspin-demo-aura-drift 8s ease-in-out infinite;
}

.demo-showcase.is-listening::before {
  transform: translate3d(0, 0, 0) scale(1);
}

.demo-showcase.is-listening::after {
  animation-delay: -4s;
  transform: translate3d(0, 0, 0) scale(1);
}

.demo-showcase.is-starting {
  animation: sendspin-demo-container-bounce 0.55s cubic-bezier(0.22, 1.2, 0.36, 1);
}

.demo-showcase__intro,
.sendspin-demo {
  position: relative;
  z-index: 1;
}

.demo-showcase__eyebrow {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.76);
}

.demo-showcase h3 {
  margin: 0 0 0.55rem;
  color: var(--demo-text-primary);
}

.demo-showcase__copy {
  margin: 0 0 1rem;
  color: var(--demo-text-secondary);
}

.demo-showcase__copy a {
  color: #ffffff;
}

.sendspin-demo__surface {
  position: relative;
  overflow: visible;
  transition: transform 0.45s ease;
}

.sendspin-demo__listen-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 0fr;
  column-gap: 0;
  row-gap: 0.9rem;
  align-items: center;
  transition:
    grid-template-columns 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    column-gap 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.demo-showcase.is-listening:not(.is-starting) .sendspin-demo__listen-row {
  grid-template-columns:
    minmax(210px, 250px)
    minmax(var(--demo-attribution-min-width), 1fr);
  column-gap: 0.9rem;
}

.sendspin-demo__listen-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.72rem;
  width: 100%;
  min-height: 76px;
  overflow: hidden;
  border: none;
  border-radius: 18px;
  background: linear-gradient(135deg, #35c5ff 0%, var(--demo-blue) 52%, #0288d1 100%);
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow:
    0 18px 36px rgba(3, 169, 244, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
  transition:
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.45s ease,
    color 0.3s ease,
    box-shadow 0.45s ease;
}

.sendspin-demo__listen-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.28) 0%,
    rgba(255, 255, 255, 0.08) 28%,
    rgba(255, 255, 255, 0) 52%,
    rgba(255, 255, 255, 0.12) 100%
  );
  opacity: 0.7;
  transform: translateX(-26%);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.sendspin-demo__listen-btn:hover:not(:disabled) {
  transform: translateY(-2px) scale(1.01);
}

.demo-showcase.is-starting .sendspin-demo__listen-btn {
  animation: sendspin-demo-button-pop 0.55s cubic-bezier(0.22, 1.18, 0.36, 1);
}

.demo-showcase.is-starting .sendspin-demo__listen-btn::before,
.demo-showcase.is-listening .sendspin-demo__listen-btn::before {
  transform: translateX(18%);
}

.demo-showcase.is-listening .sendspin-demo__listen-btn {
  background: var(--demo-page-idle-bg);
  box-shadow:
    0 18px 36px rgba(7, 13, 18, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.sendspin-demo__listen-btn-icon {
  display: none;
  width: 0.82rem;
  height: 0.82rem;
  flex: 0 0 auto;
  border-radius: 2px;
  background: currentColor;
}

.sendspin-demo__listen-btn.is-stop .sendspin-demo__listen-btn-icon {
  display: inline-block;
}

.sendspin-demo__listen-btn:disabled {
  cursor: progress;
  opacity: 1;
}

.sendspin-demo__sync-panel {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-32px);
  transform-origin: top center;
  transition:
    max-height 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.28s ease,
    margin-top 0.55s ease,
    transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.sendspin-demo__surface.is-expanded .sendspin-demo__sync-panel {
  max-height: 420px;
  margin-top: 18px;
  overflow: visible;
  opacity: 1;
  transform: translateY(0);
}

.sendspin-demo__sync-header,
.sendspin-demo__sync-graph-shell {
  opacity: 0;
  transform: translateY(-12px);
  transition:
    opacity 0.26s ease,
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.sendspin-demo__surface.is-expanded .sendspin-demo__sync-header,
.sendspin-demo__surface.is-expanded .sendspin-demo__sync-graph-shell {
  opacity: 1;
  transform: translateY(0);
}

.sendspin-demo__surface.is-expanded .sendspin-demo__sync-header {
  transition-delay: 0.08s;
}

.sendspin-demo__surface.is-expanded .sendspin-demo__sync-graph-shell {
  transition-delay: 0.14s;
}

.sendspin-demo__sync-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.sendspin-demo__sync-title {
  color: var(--demo-text-primary);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sendspin-demo__sync-readout {
  color: rgba(239, 225, 187, 0.86);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.sendspin-demo__sync-readout.sync-good {
  color: #f5fff6;
}

.sendspin-demo__sync-readout.sync-warn {
  color: #ffe082;
}

.sendspin-demo__sync-readout.sync-bad {
  color: #ff9a92;
}

.sendspin-demo__sync-graph-shell {
  position: relative;
  height: var(--demo-sync-graph-height);
  margin-right: 0;
  margin-bottom: 0;
  margin-left: 0;
  overflow: hidden;
  border-radius: 18px;
  background: transparent;
}

.sendspin-demo__sync-graph {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 18px;
}

.sendspin-demo__attribution {
  min-width: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition:
    max-height 0.35s ease,
    opacity 0.25s ease,
    transform 0.35s ease;
}

.demo-showcase.is-listening:not(.is-starting) .sendspin-demo__attribution {
  min-width: var(--demo-attribution-min-width);
  max-height: 72px;
  opacity: 1;
  transform: translateY(0);
}

.sendspin-demo__attribution-label {
  display: inline-block;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sendspin-demo__attribution-text {
  margin: 0.25rem 0 0;
  color: var(--demo-text-primary);
  font-size: 1rem;
  line-height: 1.45;
}

.sendspin-demo__attribution-text a,
.sendspin-demo__attribution-text a:visited,
.sendspin-demo__attribution-text a:hover,
.sendspin-demo__attribution-text a:focus,
.sendspin-demo__attribution-text a:active {
  color: var(--demo-text-primary);
  text-decoration-color: rgba(255, 255, 255, 0.42);
}

.sendspin-demo__attribution-text a:hover {
  text-decoration-color: currentColor;
}

.sendspin-demo__share-grid {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition:
    max-height 0.35s ease,
    margin-top 0.35s ease,
    opacity 0.25s ease,
    transform 0.35s ease;
}

.demo-showcase.is-listening:not(.is-starting) .sendspin-demo__share-grid {
  max-height: 220px;
  margin-top: 1rem;
  opacity: 1;
  transform: translateY(0);
}

.sendspin-demo__qr-panel {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
}

.sendspin-demo__share-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sendspin-demo__qr-code,
.sendspin-demo__share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--demo-share-action-size);
  min-height: var(--demo-share-action-size);
  border-radius: 18px;
  background: #ffffff;
  box-shadow: 0 16px 28px rgba(0, 0, 0, 0.16);
}

.sendspin-demo__share-btn {
  display: none;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0;
  border: none;
  color: var(--demo-page-idle-bg);
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

.sendspin-demo__share-btn:hover,
.sendspin-demo__share-btn:focus-visible {
  background: #f5f8fb;
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.2);
  transform: translateY(-1px);
}

.sendspin-demo__share-btn:focus-visible {
  outline: 2px solid rgba(3, 169, 244, 0.46);
  outline-offset: 3px;
}

.sendspin-demo__share-btn:active {
  transform: translateY(0);
}

.sendspin-demo__share-icon {
  width: var(--demo-share-icon-size);
  height: var(--demo-share-icon-size);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sendspin-demo__share-btn-label {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
}

.sendspin-demo__qr-code img {
  display: block;
  width: 104px;
  height: 104px;
}

.sendspin-demo__qr-copy {
  margin: 0;
  color: var(--demo-text-secondary);
  font-size: 0.88rem;
  line-height: 1.5;
  text-align: left;
}

.sendspin-demo__qr-copy a {
  color: #ffffff;
}

.sync-good {
  color: #f5fff6;
}

.sync-warn {
  color: #ffe082;
}

.sync-bad {
  color: #ff9a92;
}

@keyframes sendspin-demo-aura-drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }

  50% {
    transform: translate3d(16px, -12px, 0) scale(1.08);
  }
}

@keyframes sendspin-demo-container-bounce {
  0% {
    transform: translateY(0) scale(1);
  }

  38% {
    transform: translateY(-8px) scale(1.015);
  }

  70% {
    transform: translateY(4px) scale(0.995);
  }

  100% {
    transform: translateY(0) scale(1);
  }
}

@keyframes sendspin-demo-control-bounce {
  0% {
    transform: scale(1);
  }

  35% {
    transform: scale(1.02);
  }

  68% {
    transform: scale(0.992);
  }

  100% {
    transform: scale(1);
  }
}

@keyframes sendspin-demo-button-pop {
  0% {
    transform: scale(1);
  }

  35% {
    transform: scale(1.035);
  }

  65% {
    transform: scale(0.985);
  }

  100% {
    transform: scale(1);
  }
}

@media (max-width: 480px) {
  .demo-showcase {
    --demo-radius: 22px;
    --demo-sync-graph-height: 133px;
    padding: 1rem;
  }

  .sendspin-demo__surface {
    padding: 16px;
  }

  .sendspin-demo__listen-btn {
    min-height: 72px;
    font-size: 1.15rem;
  }

  .demo-showcase.is-listening:not(.is-starting) .sendspin-demo__listen-row {
    grid-template-columns: 1fr;
  }

  .demo-showcase.is-listening:not(.is-starting) .sendspin-demo__attribution {
    min-width: 0;
  }

  .sendspin-demo__qr-panel {
    flex-direction: column;
    align-items: center;
  }

  .sendspin-demo__share-actions {
    justify-content: center;
  }

  .sendspin-demo.has-web-share .sendspin-demo__share-btn {
    display: flex;
  }

  .sendspin-demo__qr-copy {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .demo-showcase,
  .demo-showcase::before,
  .demo-showcase::after,
  .demo-showcase *,
  .demo-showcase *::before,
  .demo-showcase *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }
}