.spt-root {
  --spt-ink: #111827;
  --spt-muted: #64748b;
  --spt-line: rgb(15, 23, 42, 0.12);
  --spt-panel: #fff;
  --spt-soft: #eef2f7;
  --spt-green: #10b981;
  --spt-red: #f43f5e;
  --spt-blue: #3b82f6;
  --spt-shadow: rgb(15, 23, 42, 0.12);

  color: var(--spt-ink);
}

.theme-dark .spt-root {
  --spt-ink: #f8fafc;
  --spt-muted: #a8b3c5;
  --spt-line: rgb(226, 232, 240, 0.16);
  --spt-panel: #101827;
  --spt-soft: #162235;
  --spt-green: #34d399;
  --spt-red: #fb7185;
  --spt-blue: #60a5fa;
  --spt-shadow: rgb(0, 0, 0, 0.32);
}

.spt-console {
  width: 100%;
}

.spt-stage {
  position: relative;
  display: grid;
  gap: 0.95rem;
  padding: clamp(1rem, 2.2vw, 1.35rem);
  border: 1px solid var(--spt-line);
  border-radius: 8px;
  background:
    radial-gradient(circle at 18% 18%, color-mix(in srgb, var(--spt-blue) 20%, transparent), transparent 28%),
    radial-gradient(circle at 84% 16%, color-mix(in srgb, var(--spt-red) 18%, transparent), transparent 27%),
    linear-gradient(135deg, color-mix(in srgb, var(--spt-panel) 88%, var(--spt-blue)), color-mix(in srgb, var(--spt-panel) 86%, var(--spt-red))),
    var(--spt-panel);
  box-shadow: 0 1rem 2rem var(--spt-shadow);
  overflow: hidden;
}

.spt-stage::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0 34%, rgb(255, 255, 255, 0.1) 48%, transparent 62% 100%);
  content: "";
  opacity: 0;
  transform: translateX(-120%);
  pointer-events: none;
}

.spt-root.is-normal .spt-stage::before,
.spt-root.is-inverted .spt-stage::before {
  animation: spt-sheen 2.8s ease-in-out infinite;
}

.spt-field {
  display: grid;
  grid-template-columns: minmax(4.5rem, 0.62fr) minmax(11rem, 1fr) minmax(4.5rem, 0.62fr);
  align-items: center;
  min-height: 9.2rem;
  padding: 0.2rem clamp(0.2rem, 2vw, 1rem);
}

.spt-speaker {
  position: relative;
  display: grid;
  place-items: center;
  justify-self: center;
  width: clamp(5.5rem, 11vw, 7rem);
  height: clamp(5.5rem, 11vw, 7rem);
  min-width: 0;
  color: var(--spt-blue);
  font-size: 0.72rem;
  font-weight: 950;
}

.spt-speaker-right {
  color: var(--spt-red);
}

.spt-speaker span {
  position: absolute;
  left: 50%;
  bottom: -1.05rem;
  color: var(--spt-muted);
  transform: translateX(-50%);
}

.spt-speaker svg {
  position: relative;
  z-index: 2;
  width: clamp(3.3rem, 8vw, 4.6rem);
  height: clamp(3.3rem, 8vw, 4.6rem);
  padding: 0.72rem;
  border-radius: 50%;
  background:
    linear-gradient(145deg, color-mix(in srgb, currentcolor 16%, var(--spt-soft)), var(--spt-soft));
  color: var(--spt-blue);
  box-shadow:
    inset 0 0 0 1px var(--spt-line),
    0 0.6rem 1.5rem color-mix(in srgb, currentcolor 24%, transparent);
}

.spt-root.is-normal .spt-speaker svg,
.spt-root.is-inverted .spt-speaker svg {
  animation: spt-speaker-kick 680ms ease-in-out infinite alternate;
}

.spt-speaker i,
.spt-speaker::before,
.spt-speaker::after {
  position: absolute;
  z-index: 1;
  width: clamp(4.7rem, 10vw, 6.4rem);
  aspect-ratio: 1;
  border: 1px solid currentcolor;
  border-radius: 50%;
  opacity: 0;
  content: "";
  transform: scale(0.78);
}

.spt-speaker i {
  display: block;
  opacity: 0.14;
  transform: scale(1);
}

.spt-speaker::after {
  animation-delay: 420ms;
}

.spt-root.is-normal .spt-speaker::before,
.spt-root.is-normal .spt-speaker::after,
.spt-root.is-inverted .spt-speaker::before,
.spt-root.is-inverted .spt-speaker::after {
  animation: spt-pulse 1.25s ease-out infinite;
}

.spt-root.is-inverted .spt-speaker-right::before,
.spt-root.is-inverted .spt-speaker-right::after {
  animation-name: spt-pulse-tight;
}

.spt-root.is-inverted .spt-speaker-left::before,
.spt-root.is-inverted .spt-speaker-left::after {
  animation-direction: reverse;
}

.spt-speaker-right svg {
  color: var(--spt-red);
}

.spt-wave {
  position: relative;
  display: grid;
  place-items: center;
  gap: 0.36rem;
  min-width: 0;
}

.spt-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: min(9rem, 28vw);
  aspect-ratio: 1;
  border-radius: 50%;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.72);
  pointer-events: none;
}

.spt-core b,
.spt-core::before,
.spt-core::after {
  position: absolute;
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--spt-green) 55%, var(--spt-blue));
  border-radius: 50%;
  content: "";
}

.spt-core::before {
  width: 72%;
}

.spt-core::after {
  width: 44%;
}

.spt-root.is-normal .spt-core,
.spt-root.is-inverted .spt-core {
  opacity: 0.34;
  animation: spt-core-spin 5s linear infinite;
}

.spt-wave-line {
  position: relative;
  z-index: 2;
  width: min(13.5rem, 34vw);
  height: 1.05rem;
  border-radius: 999px;
  background: var(--spt-green);
  box-shadow: 0 0.35rem 1rem color-mix(in srgb, var(--spt-green) 26%, transparent);
  transform: skewX(-18deg);
  transition: background 160ms ease, transform 160ms ease;
}

.spt-wave-b {
  background: var(--spt-blue);
  box-shadow: 0 0.35rem 1rem color-mix(in srgb, var(--spt-blue) 26%, transparent);
}

.spt-root.is-inverted .spt-wave-b {
  background: var(--spt-red);
  box-shadow: 0 0.35rem 1rem color-mix(in srgb, var(--spt-red) 26%, transparent);
  transform: skewX(18deg) translateY(-0.25rem);
  animation-name: spt-wave-breathe-inverted;
}

.spt-root.is-normal .spt-wave-line,
.spt-root.is-inverted .spt-wave-line {
  animation: spt-wave-breathe 760ms ease-in-out infinite alternate;
}

.spt-wave strong {
  position: relative;
  z-index: 2;
  color: var(--spt-ink);
  font-size: 0.86rem;
  font-weight: 950;
  text-align: center;
}

.spt-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.65rem;
}

.spt-action {
  position: relative;
  display: grid;
  align-items: center;
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 950;
  cursor: pointer;
  perspective: 900px;
  transform-style: preserve-3d;
  transition: transform 150ms ease, filter 150ms ease, background 150ms ease;
  min-height: 4.45rem;
  padding: 0.85rem 1rem;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  text-align: left;
  overflow: hidden;
  background: transparent;
}

.spt-action::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0 28%, rgb(255, 255, 255, 0.24) 48%, transparent 68% 100%);
  content: "";
  opacity: 0;
  transform: translateX(-120%);
  pointer-events: none;
}

.spt-action:hover::before,
.spt-action[aria-pressed="true"]::before {
  animation: spt-sheen 1.9s ease-in-out infinite;
}

.spt-action-face {
  grid-area: 1 / 1;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.55rem;
  align-items: center;
  align-self: stretch;
  margin: -0.85rem -1rem;
  padding: 0.85rem 1rem;
  border-radius: 8px;
  color: #fff;
  backface-visibility: hidden;
  transition: transform 360ms cubic-bezier(0.2, 0.8, 0.2, 1), opacity 220ms ease;
}

.spt-action-back {
  background: linear-gradient(135deg, #263244, #0f172a);
  transform: rotateX(180deg);
  opacity: 0;
}

.spt-action[aria-pressed="true"] .spt-action-front {
  transform: rotateX(-180deg);
  opacity: 0;
}

.spt-action[aria-pressed="true"] .spt-action-back {
  transform: rotateX(0);
  opacity: 1;
}

.spt-action svg {
  width: 1.9rem;
  height: 1.9rem;
}

.spt-action-normal {
  --spt-action-glow: rgb(15, 186, 141, 0.34);
}

.spt-action-inverted {
  --spt-action-glow: rgb(255, 91, 114, 0.34);
}

.spt-action-normal .spt-action-front {
  background: linear-gradient(135deg, #0fba8d, #059669);
}

.spt-action-inverted .spt-action-front {
  background: linear-gradient(135deg, #ff5b72, #e11d48);
}

.spt-action:hover,
.spt-root.is-normal .spt-action-normal,
.spt-root.is-inverted .spt-action-inverted {
  filter: saturate(1.1) brightness(1.04);
  transform: translateY(-1px);
}

.spt-action[aria-pressed="true"] {
  box-shadow:
    0 0.8rem 2rem var(--spt-action-glow),
    inset 0 0 0 1px rgb(255, 255, 255, 0.24);
}

.spt-action[aria-pressed="true"] svg {
  animation: spt-button-pop 820ms ease-in-out infinite alternate;
}

.spt-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.55rem;
  align-items: baseline;
  min-height: 1.45rem;
  color: var(--spt-muted);
}

.spt-readout strong {
  color: var(--spt-ink);
  font-size: 0.98rem;
  font-weight: 950;
}

.spt-readout p {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 760;
  line-height: 1.25;
}

.spt-settings {
  display: grid;
  grid-template-columns: minmax(8rem, 0.7fr) minmax(10rem, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.7rem;
  border-radius: 8px;
  background: color-mix(in srgb, var(--spt-soft) 66%, transparent);
}

.spt-settings label,
.spt-settings fieldset {
  display: grid;
  gap: 0.25rem;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.spt-settings span,
.spt-settings legend {
  color: var(--spt-muted);
  font-size: 0.66rem;
  font-weight: 900;
}

.spt-settings output {
  color: var(--spt-ink);
  font-size: 0.9rem;
  font-weight: 950;
}

.spt-range {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.32rem 0.55rem;
}

.spt-range input {
  grid-column: 1 / -1;
  width: 100%;
  height: 0.9rem;
  padding: 0.2rem;
  border-radius: 999px;
  appearance: none;
  background:
    linear-gradient(90deg, var(--spt-blue), var(--spt-green)) 0 / var(--spt-fill, 0%) 100% no-repeat,
    color-mix(in srgb, var(--spt-ink) 9%, var(--spt-soft));
  accent-color: var(--spt-blue);
  cursor: pointer;
  box-shadow:
    inset 0 0 0 1px var(--spt-line),
    inset 0 0.25rem 0.7rem rgb(0, 0, 0, 0.08);
}

.spt-range input::-webkit-slider-thumb {
  width: 1.35rem;
  height: 1.35rem;
  border: 0.24rem solid var(--spt-panel);
  border-radius: 50%;
  appearance: none;
  background: linear-gradient(135deg, var(--spt-blue), var(--spt-green));
  box-shadow: 0 0.35rem 0.85rem var(--spt-shadow);
}

.spt-range input::-moz-range-thumb {
  width: 0.92rem;
  height: 0.92rem;
  border: 0.24rem solid var(--spt-panel);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--spt-blue), var(--spt-green));
  box-shadow: 0 0.25rem 0.7rem var(--spt-shadow);
}

.spt-toggle {
  position: relative;
  grid-template-columns: auto auto;
  gap: 0;
  align-self: stretch;
  padding: 0.22rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--spt-ink) 8%, var(--spt-soft));
  box-shadow: inset 0 0 0 1px var(--spt-line);
}

.spt-toggle legend {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.spt-toggle label {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  min-height: 2.1rem;
  min-width: 5.2rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: transparent;
  color: var(--spt-ink);
  font-size: 0.78rem;
  font-weight: 900;
  cursor: pointer;
  transition: color 160ms ease;
  box-shadow: none;
}

.spt-toggle input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.spt-toggle label:has(input:checked) {
  color: var(--spt-panel);
  box-shadow: none;
}

.spt-toggle::after {
  position: absolute;
  z-index: 1;
  left: 0.22rem;
  bottom: 0.22rem;
  width: calc((100% - 0.44rem) / 2);
  height: 2.1rem;
  border-radius: 999px;
  background: var(--spt-ink);
  box-shadow: 0 0.35rem 0.9rem var(--spt-shadow);
  content: "";
  transition: transform 180ms ease;
}

.spt-toggle:has(input[value="sine"]:checked)::after {
  transform: translateX(100%);
}

@media (max-width: 720px) {
  .spt-field {
    grid-template-columns: 1fr;
    gap: 0.65rem;
    min-height: 0;
  }

  .spt-speaker {
    display: grid;
  }

  .spt-wave-line {
    width: min(13rem, 74vw);
  }

  .spt-actions {
    grid-template-columns: 1fr 1fr;
  }

  .spt-settings {
    grid-template-columns: 1fr;
  }

  .spt-toggle {
    justify-self: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .spt-action,
  .spt-wave-line,
  .spt-speaker::before,
  .spt-speaker::after,
  .spt-core,
  .spt-action[aria-pressed="true"] svg {
    transition: none;
    animation: none;
  }
}

@keyframes spt-pulse {
  0% {
    opacity: 0.45;
    transform: scale(0.68);
  }

  100% {
    opacity: 0;
    transform: scale(1.68);
  }
}

@keyframes spt-pulse-tight {
  0% {
    opacity: 0.6;
    transform: scale(0.7);
  }

  100% {
    opacity: 0;
    transform: scale(1.25);
  }
}

@keyframes spt-core-spin {
  to {
    transform: translate(-50%, -50%) scale(0.72) rotate(360deg);
  }
}

@keyframes spt-button-pop {
  from {
    transform: scale(1);
  }

  to {
    transform: scale(1.08);
  }
}

@keyframes spt-speaker-kick {
  from {
    transform: scale(1);
  }

  to {
    transform: scale(1.06);
  }
}

@keyframes spt-sheen {
  0% {
    opacity: 0;
    transform: translateX(-120%);
  }

  28% {
    opacity: 1;
  }

  62%,
  100% {
    opacity: 0;
    transform: translateX(120%);
  }
}

@keyframes spt-wave-breathe {
  from {
    filter: saturate(1);
    transform: skewX(-18deg) scaleX(0.96);
  }

  to {
    filter: saturate(1.25) brightness(1.08);
    transform: skewX(-18deg) scaleX(1.04);
  }
}

@keyframes spt-wave-breathe-inverted {
  from {
    filter: saturate(1);
    transform: skewX(18deg) translateY(-0.25rem) scaleX(0.96);
  }

  to {
    filter: saturate(1.25) brightness(1.08);
    transform: skewX(18deg) translateY(-0.25rem) scaleX(1.04);
  }
}