/* ── Practice Studio Metronome (premium experience) ── */

#panel-metronome {
  transition: background 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}

#metronome-root.metronome {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  --metro-body-gap: 0.72rem;
  --metro-hero-gap: 0.55rem;
  --metro-slider-transport-extra: 0.875rem;
  --metro-stage-gap: 0.5rem;
  --metro-visual-gap: 0.38rem;
  --metro-focus-transition: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  --pulse-duration: 0.5s;
  --pulse-peak: 1.045;
  --pulse-glow: 0.38;
  --ripple-strength: 0.12;
  --pulse-shadow-rest:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 10px 36px rgba(0, 0, 0, 0.32);
  --pulse-shadow-peak:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 40px rgba(245, 130, 32, 0.22),
    0 14px 44px rgba(0, 0, 0, 0.34);
  --pulse-shadow-downbeat:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    0 0 56px rgba(245, 130, 32, 0.34),
    0 18px 52px rgba(0, 0, 0, 0.38);
}

#metronome-root .metronome-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--metro-body-gap);
  width: 100%;
}

#metronome-root .metronome-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--metro-hero-gap);
  width: 100%;
  max-width: 20rem;
}

#metronome-root .metronome-transport {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  max-width: 20rem;
  margin-top: var(--metro-slider-transport-extra);
}

#metronome-root .metronome-pulse-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--metro-visual-gap);
  width: 100%;
  max-width: 20rem;
}

#metronome-root .metronome-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

#metronome-root .metronome-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  width: 100%;
}

#metronome-root .time-sig-label {
  text-align: center;
  margin: 0;
}

#metronome-root .metronome-drawer {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  width: 100%;
  padding-top: 0.25rem;
  border-top: none;
  max-height: none;
  overflow: visible;
}

#metronome-root .metronome-hero-slider {
  width: 100%;
  padding: 0 0.125rem;
}

#metronome-root .metronome-hero-slider .bpm-slider-row {
  gap: 0.5rem;
  transition: gap 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

#metronome-root.is-active .metronome-hero-slider .bpm-slider-row {
  gap: 0;
}

#metronome-root .metronome-hero-slider .slider-label {
  flex: 0 0 auto;
  width: 1.75rem;
  text-align: center;
  overflow: hidden;
  white-space: nowrap;
  transition:
    opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    margin 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

#metronome-root.is-active .metronome-hero-slider .slider-label {
  opacity: 0;
  width: 0;
  margin: 0;
  pointer-events: none;
}

#metronome-root .bpm-display {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 0.5rem;
  line-height: 1;
  width: 100%;
  transform: scale(1);
  transform-origin: center bottom;
  transition: transform var(--metro-focus-transition);
}

#metronome-root .bpm-value {
  font-size: clamp(3.5rem, 18vw, 5.25rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 4px 32px rgba(245, 130, 32, 0.18);
  transition:
    font-size 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.2s ease,
    transform 0.28s cubic-bezier(0.34, 1.2, 0.64, 1),
    text-shadow 0.35s ease,
    color 0.25s ease;
  display: inline-block;
  transform-origin: center bottom;
  font-family: inherit;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  cursor: text;
  line-height: 1;
}

#metronome-root .bpm-value:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
  border-radius: 0.25rem;
}

#metronome-root .bpm-value[hidden],
#metronome-root .bpm-value-input[hidden] {
  display: none !important;
}

#metronome-root .bpm-value-input {
  position: relative;
  z-index: 1;
  width: 5.5ch;
  min-width: 0;
  font-size: clamp(3.5rem, 18vw, 5.25rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
  font-family: inherit;
  line-height: 1;
  text-align: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(245, 130, 32, 0.45);
  border-radius: 0.5rem;
  padding: 0.1rem 0.25rem;
  box-shadow: 0 0 0 3px rgba(245, 130, 32, 0.12);
  -moz-appearance: textfield;
  appearance: textfield;
}

#metronome-root .bpm-value-input::-webkit-outer-spin-button,
#metronome-root .bpm-value-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

#metronome-root .bpm-value-input:focus {
  outline: none;
}

#metronome-root .bpm-value.is-ticking {
  transform: scale(1.035);
  text-shadow: 0 6px 36px rgba(245, 130, 32, 0.28);
}

#metronome-root .bpm-unit {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding-bottom: 0.65rem;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

#metronome-root .metronome-transport-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xs);
  width: 100%;
  transition: grid-template-columns 0.38s cubic-bezier(0.4, 0, 0.2, 1);
}

#metronome-root.is-active .metronome-transport-row {
  grid-template-columns: 1fr 1fr;
}

#metronome-root.is-active .metronome-transport-row.is-entering {
  animation: metronome-transport-enter 0.45s ease-out;
}

@keyframes metronome-transport-enter {
  from {
    opacity: 0.72;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#metronome-root.is-active #metronome-stop {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

#metronome-root #metronome-stop {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(6px) scale(0.98);
  pointer-events: none;
  min-height: 52px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  transition:
    opacity 0.38s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.38s cubic-bezier(0.34, 1.15, 0.64, 1),
    background 0.2s ease,
    box-shadow 0.2s ease;
}

#metronome-root .btn-play-hero {
  width: 100%;
  min-height: 52px;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  transition:
    background 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    color 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.18s cubic-bezier(0.34, 1.15, 0.64, 1),
    box-shadow 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    filter 0.2s ease;
}

#metronome-root .btn-play-hero:active,
#metronome-root #metronome-stop:active {
  transform: scale(0.98);
}

@media (hover: hover) and (pointer: fine) {
  #metronome-root .btn-play-hero:hover {
    filter: brightness(1.04);
    transform: translateY(-1px);
  }
}

#metronome-root .btn-play-hero.is-paused {
  background: var(--white);
  color: var(--black);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
}

#metronome-root .beat-indicator {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(68vw, 13.5rem);
  height: min(68vw, 13.5rem);
  transform: scale(1);
  transform-origin: center center;
  transition: transform var(--metro-focus-transition);
}

#metronome-root .metronome-pulse-backdrop {
  position: absolute;
  inset: -18%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(245, 130, 32, calc(var(--ripple-strength) * 0.55)) 0%,
    rgba(245, 130, 32, 0) 72%
  );
  opacity: 0;
  transform: scale(0.82);
  pointer-events: none;
}

#metronome-root .metronome-pulse-backdrop.is-ripple-active {
  animation: metronome-backdrop-ripple var(--pulse-duration) cubic-bezier(0.42, 0, 0.18, 1) forwards;
}

#metronome-root .metronome-pulse-ripple {
  position: absolute;
  inset: -6%;
  border-radius: 50%;
  border: 1px solid rgba(245, 130, 32, calc(var(--ripple-strength) * 0.35));
  opacity: 0;
  transform: scale(0.9);
  pointer-events: none;
}

#metronome-root .metronome-pulse-ripple.is-ripple-active {
  animation: metronome-ring-ripple var(--pulse-duration) cubic-bezier(0.42, 0, 0.18, 1) forwards;
}

#metronome-root .metronome-pulse-glow {
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(245, 130, 32, calc(var(--pulse-glow) * 0.62)) 0%,
    rgba(245, 130, 32, calc(var(--pulse-glow) * 0.18)) 42%,
    rgba(245, 130, 32, 0) 72%
  );
  opacity: 0.55;
  transform: scale(0.88);
  pointer-events: none;
  filter: blur(0.5px);
}

#metronome-root .metronome-pulse-glow.is-glow-active {
  animation: metronome-glow-breathe var(--pulse-duration) cubic-bezier(0.42, 0, 0.18, 1) forwards;
}

#metronome-root .beat-circle {
  position: relative;
  z-index: 1;
  width: 72%;
  height: 72%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.08) 0%, rgba(14, 14, 14, 0.96) 100%);
  border: 1px solid rgba(255, 255, 255, 0.11);
  box-shadow: var(--pulse-shadow-rest);
  transform: scale(0.905);
  transition:
    border-color 0.35s ease,
    background 0.35s ease;
}

#metronome-root:not(.is-playing) .beat-circle {
  transition:
    transform 0.55s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.55s ease,
    border-color 0.35s ease;
}

#metronome-root.is-playing .beat-circle.is-beat-active {
  animation: metronome-breathe-beat var(--pulse-duration) cubic-bezier(0.42, 0, 0.18, 1) forwards;
}

#metronome-root.is-paused .beat-circle {
  animation-play-state: paused;
}

#metronome-root .beat-circle.is-downbeat {
  --pulse-peak: 1.12;
  --pulse-glow: 0.72;
  --ripple-strength: 0.24;
  border-color: rgba(255, 255, 255, 0.2);
}

#metronome-root .beat-circle.is-accent {
  --pulse-peak: 1.08;
  --pulse-glow: 0.55;
  --ripple-strength: 0.16;
  border-color: rgba(255, 255, 255, 0.16);
}

/* Attack at 0% (aligned with the audible click); settle to rest by 100%.
   A previous 100% re-peak made the strong flash land on the *next* beat. */
@keyframes metronome-breathe-beat {
  0% {
    transform: scale(var(--pulse-peak, 1.045));
    box-shadow: var(--pulse-shadow-peak);
  }

  48% {
    transform: scale(0.892);
    box-shadow: var(--pulse-shadow-rest);
  }

  78% {
    transform: scale(0.9);
    box-shadow: var(--pulse-shadow-rest);
  }

  100% {
    transform: scale(0.905);
    box-shadow: var(--pulse-shadow-rest);
  }
}

#metronome-root .beat-circle.is-downbeat.is-beat-active {
  animation-name: metronome-breathe-beat-downbeat;
}

#metronome-root .beat-circle.is-accent.is-beat-active {
  animation-name: metronome-breathe-beat-accent;
}

@keyframes metronome-breathe-beat-downbeat {
  0% {
    transform: scale(1.14);
    box-shadow: var(--pulse-shadow-downbeat);
    border-color: rgba(255, 255, 255, 0.28);
  }

  48% {
    transform: scale(0.885);
    box-shadow: var(--pulse-shadow-rest);
    border-color: rgba(255, 255, 255, 0.14);
  }

  78% {
    transform: scale(0.9);
    box-shadow: var(--pulse-shadow-rest);
    border-color: rgba(255, 255, 255, 0.12);
  }

  100% {
    transform: scale(0.905);
    box-shadow: var(--pulse-shadow-rest);
    border-color: rgba(255, 255, 255, 0.11);
  }
}

@keyframes metronome-breathe-beat-accent {
  0% {
    transform: scale(1.08);
    box-shadow: var(--pulse-shadow-peak);
  }

  48% {
    transform: scale(0.89);
    box-shadow: var(--pulse-shadow-rest);
  }

  78% {
    transform: scale(0.9);
    box-shadow: var(--pulse-shadow-rest);
  }

  100% {
    transform: scale(0.905);
    box-shadow: var(--pulse-shadow-rest);
  }
}

@keyframes metronome-glow-breathe {
  0% {
    opacity: calc(0.55 + var(--pulse-glow) * 0.45);
    transform: scale(calc(0.92 + var(--pulse-glow) * 0.22));
  }

  48% {
    opacity: calc(0.18 + var(--pulse-glow) * 0.12);
    transform: scale(0.84);
  }

  78% {
    opacity: calc(0.28 + var(--pulse-glow) * 0.1);
    transform: scale(0.86);
  }

  100% {
    opacity: 0.55;
    transform: scale(0.88);
  }
}

@keyframes metronome-backdrop-ripple {
  0% {
    opacity: calc(0.2 + var(--ripple-strength));
    transform: scale(0.86);
  }

  38% {
    opacity: calc(0.06 + var(--ripple-strength) * 0.35);
    transform: scale(1.28);
  }

  100% {
    opacity: 0;
    transform: scale(1.48);
  }
}

@keyframes metronome-ring-ripple {
  0% {
    opacity: calc(0.28 + var(--ripple-strength));
    transform: scale(0.92);
  }

  42% {
    opacity: calc(0.04 + var(--ripple-strength) * 0.2);
    transform: scale(1.22);
  }

  100% {
    opacity: 0;
    transform: scale(1.38);
  }
}

#metronome-root.is-paused .beat-circle.is-beat-active,
#metronome-root.is-paused .metronome-pulse-glow.is-glow-active,
#metronome-root.is-paused .metronome-pulse-ripple.is-ripple-active,
#metronome-root.is-paused .metronome-pulse-backdrop.is-ripple-active {
  animation-play-state: paused;
}

#metronome-root .beat-number {
  font-size: clamp(2.5rem, 12vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  transition: opacity 0.24s cubic-bezier(0.4, 0, 0.2, 1), transform 0.24s cubic-bezier(0.34, 1.1, 0.64, 1);
}

#metronome-root .beat-number.is-changing {
  opacity: 0.35;
  transform: scale(0.92);
}

#metronome-root .time-sig-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.42);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

#metronome-root .beat-pattern-hint {
  font-size: 0.6875rem;
  color: var(--muted);
  margin: 0;
  text-align: center;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

#metronome-root .metronome-focus-exit {
  margin: 0;
  font-size: 0.6875rem;
  color: rgba(255, 255, 255, 0.32);
  letter-spacing: 0.04em;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--metro-focus-transition);
}

#metronome-root .metronome-lesson {
  width: 100%;
  padding: var(--space-md);
  border-radius: 20px;
  background:
    radial-gradient(ellipse 100% 80% at 50% 0%, rgba(91, 155, 213, 0.08), transparent 60%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.015) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

#metronome-root .metronome-lesson-title {
  margin: 0.25rem 0 0;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
}

#metronome-root .metronome-lesson-tempo {
  margin: 0.375rem 0 var(--space-sm);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.48);
}

#metronome-root .metronome-lesson-tempo strong {
  color: var(--orange);
  font-weight: 700;
}

#metronome-root .metronome-lesson-apply {
  width: 100%;
  min-height: 44px;
  border-radius: var(--radius-pill);
}

/* Premium sliders */
#metronome-root .premium-slider-track {
  position: relative;
  flex: 1;
  min-width: 0;
  height: 0.5rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  overflow: visible;
}

#metronome-root .premium-slider-track--bpm {
  height: 0.625rem;
  padding: 0.55rem 0;
  margin: -0.55rem 0;
  box-sizing: content-box;
}

#metronome-root .premium-slider-track--bpm .premium-slider-fill {
  top: 0.55rem;
  bottom: 0.55rem;
  height: 0.625rem;
}

#metronome-root .premium-slider-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, rgba(245, 130, 32, 0.45), rgba(245, 130, 32, 0.85));
  box-shadow: 0 0 16px rgba(245, 130, 32, 0.25);
  pointer-events: none;
  transition: width 0.16s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease;
}

#metronome-root .premium-slider-track.is-dragging .premium-slider-fill {
  box-shadow: 0 0 22px rgba(245, 130, 32, 0.38);
}

#metronome-root .premium-slider-track input[type="range"] {
  position: relative;
  z-index: 1;
  width: 100%;
  margin: 0;
  height: 0.5rem;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

#metronome-root .premium-slider-track--bpm input[type="range"] {
  height: 1.75rem;
  margin: -0.55rem 0;
}

#metronome-root .premium-slider-track input[type="range"]::-webkit-slider-runnable-track {
  height: 0.5rem;
  background: transparent;
}

#metronome-root .premium-slider-track--bpm input[type="range"]::-webkit-slider-runnable-track {
  height: 0.625rem;
}

#metronome-root .premium-slider-track input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 1.375rem;
  height: 1.375rem;
  margin-top: -0.4375rem;
  border-radius: 50%;
  background: var(--orange);
  border: 2.5px solid rgba(255, 255, 255, 0.92);
  box-shadow: 0 0 0 0 rgba(245, 130, 32, 0.4), var(--shadow-sm);
  transition: transform 0.2s cubic-bezier(0.34, 1.15, 0.64, 1), box-shadow 0.2s ease;
}

#metronome-root .premium-slider-track--bpm input[type="range"]::-webkit-slider-thumb {
  width: 1.625rem;
  height: 1.625rem;
  margin-top: -0.5rem;
}

#metronome-root .premium-slider-track input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.04);
}

#metronome-root .premium-slider-track.is-dragging input[type="range"]::-webkit-slider-thumb,
#metronome-root .premium-slider-track input[type="range"]:active::-webkit-slider-thumb {
  transform: scale(1.08);
  box-shadow: 0 0 0 6px rgba(245, 130, 32, 0.18), var(--shadow-sm);
}

#metronome-root .premium-slider-track input[type="range"]::-moz-range-thumb {
  width: 1.375rem;
  height: 1.375rem;
  border-radius: 50%;
  background: var(--orange);
  border: 2.5px solid rgba(255, 255, 255, 0.92);
}

#metronome-root .premium-slider-track--bpm input[type="range"]::-moz-range-thumb {
  width: 1.625rem;
  height: 1.625rem;
}

#metronome-root .premium-slider-track--bpm input[type="range"]::-moz-range-track {
  height: 0.625rem;
  background: transparent;
}

#metronome-root .bpm-slider-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

#metronome-root .metronome-volume {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  width: 100%;
}

#metronome-root .metronome-volume-label {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.38);
}

#metronome-root .metronome-volume-track {
  width: 100%;
}

/* Segmented nudge */
#metronome-root .bpm-nudge-segmented {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 0.1875rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

#metronome-root .bpm-nudge-segmented .btn-nudge {
  min-height: 2.5rem;
  border: none;
  border-radius: 0;
  background: transparent;
  font-size: 0.8125rem;
  box-shadow: none;
  transition:
    background 0.18s ease,
    color 0.18s ease,
    transform 0.14s cubic-bezier(0.34, 1.15, 0.64, 1);
}

#metronome-root .bpm-nudge-segmented .btn-nudge + .btn-nudge {
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

#metronome-root .bpm-nudge-segmented .btn-nudge:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.05);
}

#metronome-root .bpm-nudge-segmented .btn-nudge:active:not(:disabled) {
  transform: scale(0.96);
  background: rgba(245, 130, 32, 0.14);
}

/* Sound chips */
#metronome-root .metro-sound-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

#metronome-root .metro-sound-chip {
  min-height: 2.25rem;
  padding: 0 0.75rem;
  touch-action: manipulation;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: transparent;
  color: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition:
    background 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    color 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.14s cubic-bezier(0.34, 1.15, 0.64, 1),
    box-shadow 0.28s ease,
    opacity 0.2s ease;
}

#metronome-root .metro-sound-chip:hover:not(.active):not(:disabled) {
  border-color: rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.04);
}

#metronome-root .metro-sound-chip.active {
  background: var(--orange);
  color: var(--black);
  border-color: rgba(255, 255, 255, 0.55);
  box-shadow:
    var(--shadow-orange),
    0 0 0 2px rgba(245, 130, 32, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}

#metronome-root .metro-sound-chip.active::after {
  content: "";
  display: inline-block;
  width: 0.4rem;
  height: 0.4rem;
  margin-left: 0.35rem;
  border-radius: 50%;
  background: rgba(17, 17, 17, 0.55);
  vertical-align: middle;
}

#metronome-root .metro-sound-chip:active:not(:disabled) {
  transform: scale(0.96);
}

#metronome-root .metro-sound-chip.is-switching {
  opacity: 0.72;
}

/* Voice count toggle */
#metronome-root .metronome-voice-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

#metronome-root .metronome-voice-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.55);
}

#metronome-root .metro-voice-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.38);
}

#metronome-root .metro-voice-switch-track {
  position: relative;
  width: 2.75rem;
  height: 1.375rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background 0.22s ease, border-color 0.22s ease;
}

#metronome-root .metro-voice-switch-thumb {
  position: absolute;
  top: 0.125rem;
  left: 0.125rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.75);
  transition: transform 0.22s cubic-bezier(0.34, 1.2, 0.64, 1), background 0.22s ease;
}

#metronome-root .metro-voice-switch[aria-checked="true"] .metro-voice-switch-track {
  background: rgba(245, 130, 32, 0.22);
  border-color: rgba(245, 130, 32, 0.4);
}

#metronome-root .metro-voice-switch[aria-checked="true"] .metro-voice-switch-thumb {
  transform: translateX(1.375rem);
  background: var(--orange);
}

#metronome-root .metro-voice-switch[aria-checked="true"] .metro-voice-switch-on {
  color: var(--orange);
}

/* Toolbar */
#metronome-root .metronome-toolbar {
  display: flex;
  gap: var(--space-xs);
  width: 100%;
}

#metronome-root .metronome-toolbar .btn-text,
#metronome-root .metronome-toolbar .btn-tap {
  flex: 1;
  min-height: 2.5rem;
  transition:
    background 0.22s ease,
    border-color 0.22s ease,
    color 0.22s ease,
    transform 0.14s cubic-bezier(0.34, 1.15, 0.64, 1),
    box-shadow 0.22s ease;
}

#metronome-root .metronome-toolbar .btn-text:active,
#metronome-root .metronome-toolbar .btn-tap:active {
  transform: scale(0.98);
}

#metronome-root .metronome-drawer > .card {
  transition: opacity 0.35s ease, transform 0.35s ease;
}

/* Presets grid */
#metronome-root .level-presets {
  padding: var(--space-md);
  border-radius: 20px;
}

#metronome-root .level-presets .section-label {
  letter-spacing: 0.08em;
}

#metronome-root .btn-preset {
  transition:
    background 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.14s cubic-bezier(0.34, 1.15, 0.64, 1),
    box-shadow 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.2s ease;
}

#metronome-root .btn-preset:hover:not(.active):not(:disabled) {
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.03);
}

#metronome-root .btn-preset:active:not(:disabled) {
  transform: scale(0.98);
}

#metronome-root .btn-preset.active {
  border-color: rgba(245, 130, 32, 0.45);
  box-shadow: 0 0 0 1px rgba(245, 130, 32, 0.2), 0 4px 16px rgba(245, 130, 32, 0.12);
}

#metronome-root .btn-preset.is-applying {
  animation: metronome-preset-apply 0.42s cubic-bezier(0.34, 1.15, 0.64, 1);
}

@keyframes metronome-preset-apply {
  0% {
    transform: scale(1);
  }

  40% {
    transform: scale(0.97);
    box-shadow: 0 0 0 1px rgba(245, 130, 32, 0.28), 0 6px 20px rgba(245, 130, 32, 0.18);
  }

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

#metronome-root .setting-card {
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

/* Focus mode — separate overlay layout; normal flow restored when class is removed */
#panel-metronome.metronome-panel--focus {
  background:
    radial-gradient(ellipse 100% 70% at 50% 18%, rgba(245, 130, 32, 0.055), transparent 58%),
    #040404;
}

#metronome-root.metronome--focus {
  position: relative;
  min-height: min(78vh, 36rem);
}

#metronome-root.metronome--focus .metronome-body {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  pointer-events: none;
}

#metronome-root.metronome--focus .metronome-hero,
#metronome-root.metronome--focus .metronome-transport,
#metronome-root.metronome--focus .metronome-pulse-section {
  pointer-events: auto;
}

#metronome-root.metronome--focus .metronome-chrome {
  display: none;
}

#metronome-root.metronome--focus .metronome-hero {
  max-width: 22rem;
}

#metronome-root.metronome--focus .metronome-transport {
  max-width: 22rem;
}

#metronome-root.metronome--focus .metronome-pulse-section {
  max-width: 22rem;
}

#metronome-root.metronome--focus .bpm-display {
  transform: scale(1.12);
}

#metronome-root.metronome--focus .beat-indicator {
  transform: scale(1.38);
}

#metronome-root.metronome--focus .bpm-value {
  text-shadow: 0 8px 48px rgba(245, 130, 32, 0.24);
  transition: text-shadow var(--metro-focus-transition);
}

#metronome-root.metronome--focus .metronome-focus-exit {
  opacity: 0.72;
  visibility: visible;
}

#metronome-root.metronome--focus-reveal .metronome-chrome {
  animation: metronome-focus-reveal var(--metro-focus-transition) cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes metronome-focus-reveal {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

#metronome-root .slider-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.32);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

#metronome-root .btn-play-hero:not(.is-paused)[aria-pressed="true"] {
  background: var(--white);
  color: var(--black);
}

#metronome-root .status-message {
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  min-height: 1.25rem;
}

#metronome-root .metronome-custom-presets {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: var(--space-md);
  border-radius: 20px;
}

#metronome-root .metronome-custom-presets-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

#metronome-root .metronome-custom-presets-head .section-label {
  margin-bottom: 0;
}

#metronome-root .metronome-save-preset {
  min-height: 2.25rem;
  padding: 0 0.85rem;
  font-size: 0.75rem;
  font-weight: 650;
  width: auto;
  margin-top: 0;
  flex-shrink: 0;
}

#metronome-root .metronome-preset-name-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.65rem 0.7rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

#metronome-root .metronome-preset-name-form[hidden] {
  display: none !important;
}

#metronome-root .metronome-preset-name-input {
  width: 100%;
  min-height: 2.5rem;
  padding: 0 0.75rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.28);
  color: var(--white);
  font-family: inherit;
  font-size: 0.875rem;
}

#metronome-root .metronome-preset-name-input:focus {
  outline: 2px solid var(--orange);
  outline-offset: 1px;
}

#metronome-root .metronome-preset-name-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

#metronome-root .metronome-preset-name-actions .btn {
  min-height: 2.35rem;
  margin-top: 0;
  width: 100%;
}

#metronome-root .metronome-preset-name-error {
  margin: 0;
  font-size: 0.75rem;
  color: #f87171;
}

#metronome-root .metronome-custom-preset-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

#metronome-root .metronome-custom-preset-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.4rem;
  align-items: center;
  padding: 0.45rem 0.5rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.025);
}

#metronome-root .metronome-custom-preset-load {
  min-height: 2.5rem;
  padding: 0.35rem 0.55rem;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--white);
  font-family: inherit;
  cursor: pointer;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

#metronome-root .metronome-custom-preset-load:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 1px;
}

#metronome-root .metronome-custom-preset-name {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#metronome-root .metronome-custom-preset-meta {
  font-size: 0.6875rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.48);
  font-variant-numeric: tabular-nums;
}

#metronome-root .metronome-custom-preset-actions {
  display: inline-flex;
  gap: 0.25rem;
  flex-shrink: 0;
}

#metronome-root .metronome-custom-preset-actions .btn {
  min-height: 2.25rem;
  min-width: 2.25rem;
  margin-top: 0;
  padding: 0 0.55rem;
  font-size: 0.6875rem;
  width: auto;
}

#metronome-root .metronome-custom-presets-empty {
  margin: 0;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.42);
  line-height: 1.4;
}

#metronome-root .metronome-custom-presets-empty[hidden] {
  display: none !important;
}

@media (max-width: 480px) {
  #metronome-root.metronome {
    min-height: auto;
    gap: var(--space-md);
  }

  #metronome-root .metronome-transport,
  #metronome-root .metronome-toolbar {
    max-width: none;
  }

  #metronome-root .beat-indicator {
    width: min(73vw, 12.25rem);
    height: min(73vw, 12.25rem);
  }

  #metronome-root .metro-sound-grid {
    gap: 0.3125rem;
  }

  #metronome-root .metro-sound-chip {
    flex: 1 1 calc(50% - 0.3125rem);
    justify-content: center;
  }

  #metronome-root .preset-level-group {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  #metronome-root .metronome-custom-preset-item {
    grid-template-columns: 1fr;
  }

  #metronome-root .metronome-custom-preset-actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  #metronome-root.is-playing .beat-circle.is-beat-active,
  #metronome-root .metronome-pulse-glow.is-glow-active,
  #metronome-root .metronome-pulse-ripple.is-ripple-active,
  #metronome-root .metronome-pulse-backdrop.is-ripple-active {
    animation: none;
  }

  #metronome-root .beat-circle,
  #metronome-root .beat-number,
  #metronome-root .bpm-value,
  #metronome-root .metronome-drawer,
  #metronome-root .beat-indicator,
  #metronome-root .btn-play-hero {
    transition: none;
  }

  #metronome-root.is-active .metronome-transport-row.is-entering {
    animation: none;
  }
}