:root {
  --futura-audio-bottom: calc(132px + env(safe-area-inset-bottom, 0px));
  --futura-audio-right: calc(12px + env(safe-area-inset-right, 0px));
  --futura-audio-purple: #8d00d7;
  --futura-audio-purple-deep: #4c008f;
  --futura-audio-surface: rgba(255, 255, 255, 0.9);
  --futura-audio-border: rgba(255, 255, 255, 0.94);
  --futura-audio-toast-bg: #263a54;
  --futura-audio-toast-border: rgba(255, 255, 255, 0.1);
  --futura-audio-shadow: 0 14px 28px rgba(76, 0, 143, 0.22), 0 0 24px rgba(141, 0, 215, 0.26);
}

html.dark {
  --futura-audio-surface: rgba(255, 255, 255, 0.9);
  --futura-audio-border: rgba(255, 255, 255, 0.94);
  --futura-audio-toast-bg: #263a54;
  --futura-audio-toast-border: rgba(255, 255, 255, 0.1);
  --futura-audio-shadow: 0 14px 28px rgba(76, 0, 143, 0.22), 0 0 24px rgba(141, 0, 215, 0.26);
}

.futura-audio-shell {
  position: fixed;
  right: var(--futura-audio-right);
  bottom: var(--futura-audio-bottom);
  z-index: 1210;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  pointer-events: none;
  opacity: 0;
  filter: blur(8px);
  transform: translateY(12px);
  transition: opacity 760ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 760ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 760ms cubic-bezier(0.22, 1, 0.36, 1);
}

.futura-audio-shell.is-visible {
  opacity: 1;
  filter: blur(0);
  transform: translateY(0);
}

.futura-audio-shell[data-side-floating="true"] {
  --futura-audio-right: calc(12px + env(safe-area-inset-right, 0px));
}

.futura-audio-shell[data-bottom-bar="true"] {
  --futura-audio-bottom: calc(132px + env(safe-area-inset-bottom, 0px));
}

.futura-audio-player {
  pointer-events: auto;
  position: relative;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--futura-audio-border);
  border-radius: 999px;
  background: var(--futura-audio-surface);
  box-shadow: var(--futura-audio-shadow);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  backdrop-filter: blur(16px) saturate(130%);
}

.futura-audio-element {
  display: none;
}

.futura-audio-button {
  position: relative;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--futura-audio-purple), var(--futura-audio-purple-deep));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28), 0 8px 18px rgba(76, 0, 143, 0.24);
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

html.dark .futura-audio-button {
  background: linear-gradient(135deg, var(--futura-audio-purple), var(--futura-audio-purple-deep));
  color: #ffffff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28), 0 8px 18px rgba(76, 0, 143, 0.24);
}

.futura-audio-button:hover,
.futura-audio-button:focus-visible {
  outline: none;
  transform: translateY(-1px) scale(1.03);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.34), 0 0 28px rgba(141, 0, 215, 0.34);
}

.futura-audio-button:focus-visible {
  outline: 2px solid rgba(141, 0, 215, 0.45);
  outline-offset: 4px;
}

.futura-audio-button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
  transform: none;
}

.futura-audio-button svg {
  width: 16px;
  height: 16px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.35;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.futura-audio-player.is-playing {
  animation: futura-audio-pulse 2.8s ease-in-out infinite;
}

.futura-audio-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.futura-audio-toast {
  position: relative;
  pointer-events: none;
  max-width: min(272px, calc(100vw - 32px));
  padding: 11px 14px;
  color: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--futura-audio-toast-border);
  border-radius: 16px;
  background: var(--futura-audio-toast-bg);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.28);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  backdrop-filter: blur(16px) saturate(130%);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.futura-audio-toast::after {
  content: "";
  position: absolute;
  right: 20px;
  bottom: -6px;
  width: 12px;
  height: 12px;
  border: 0;
  background: var(--futura-audio-toast-bg);
  transform: rotate(45deg);
}

.futura-audio-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes futura-audio-pulse {
  0%,
  100% {
    box-shadow: var(--futura-audio-shadow);
  }

  50% {
    box-shadow: var(--futura-audio-shadow), 0 0 30px rgba(141, 0, 215, 0.38);
  }
}

@media (max-width: 640px) {
  .futura-audio-shell {
    --futura-audio-bottom: calc(132px + env(safe-area-inset-bottom, 0px));
    --futura-audio-right: calc(12px + env(safe-area-inset-right, 0px));
  }

  .futura-audio-shell[data-side-floating="true"] {
    --futura-audio-right: calc(12px + env(safe-area-inset-right, 0px));
  }

  .futura-audio-shell[data-bottom-bar="true"] {
    --futura-audio-bottom: calc(132px + env(safe-area-inset-bottom, 0px));
  }

  .futura-audio-shell[data-side-floating="true"][data-bottom-bar="true"] {
    --futura-audio-bottom: calc(148px + env(safe-area-inset-bottom, 0px));
  }

  .futura-audio-toast {
    max-width: calc(100vw - 24px);
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .futura-audio-shell,
  .futura-audio-toast,
  .futura-audio-button {
    transition: none !important;
  }

  .futura-audio-player.is-playing {
    animation: none !important;
  }
}