/* Metrónomo */
.metro-stage { gap: var(--space-3); transition: background-color .25s ease; }
.metro-stage.is-flash { background-color: #1f3a32; transition: none; }

.beats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 64px;
  align-items: flex-end;
}
.beat {
  position: relative;
  width: 40px;
  height: 64px;
  border: 0;
  padding: 0;
  background: none;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  touch-action: manipulation;
}
.beat__bar {
  width: 100%;
  border-radius: 6px;
  background: var(--color-surface-3);
  border: 1px solid var(--color-hairline);
  transition: height .15s var(--ease), background-color .08s ease, box-shadow .08s ease;
}
.beat[data-level="3"] .beat__bar { height: 100%; }
.beat[data-level="2"] .beat__bar { height: 70%; }
.beat[data-level="1"] .beat__bar { height: 42%; }
.beat[data-level="0"] .beat__bar { height: 18%; background: transparent; border-style: dashed; }
.beat[data-level="3"] .beat__bar { background: rgba(0, 205, 156, .22); border-color: rgba(0, 205, 156, .45); }
.beat[data-level="2"] .beat__bar { background: #3a3934; }
.beat.is-active .beat__bar { background: var(--color-accent); border-color: var(--color-accent); box-shadow: 0 0 18px var(--color-accent-glow); transition: none; }
.beat[data-level="0"].is-active .beat__bar { background: transparent; border-color: var(--color-accent); box-shadow: none; }
.beat__num { position: absolute; top: -18px; font-size: .7rem; font-weight: 700; color: var(--color-gray); }
.beat:hover .beat__bar { border-color: var(--color-accent); }
.beats--many .beat { width: 30px; height: 52px; }
.beats { padding-top: 16px; }

.metro-tempo {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  max-width: 460px;
}
.metro-tempo__read { text-align: center; min-width: 0; }
.metro-tempo__input {
  width: 100%;
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  border-radius: var(--radius);
  cursor: text;
}
.metro-tempo__input:focus { outline: none; background: var(--color-surface-2); }

.metro-range { max-width: 460px; }

.metro-actions {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  max-width: 460px;
}
.metro-tap { justify-self: end; min-width: 84px; }
.metro-tap.is-hit { background: var(--color-accent-dim); border-color: var(--color-accent); color: var(--color-accent); }
.metro-play-wrap { position: relative; display: grid; place-items: center; }
.metro-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  opacity: 0;
  pointer-events: none;
}
.metro-pulse.is-beat { animation: metro-pulse .45s ease-out; }
.metro-pulse.is-down { animation: metro-pulse-down .6s ease-out; }
@keyframes metro-pulse { from { transform: scale(1); opacity: .7; } to { transform: scale(1.5); opacity: 0; } }
@keyframes metro-pulse-down { from { transform: scale(1); opacity: 1; border-width: 4px; } to { transform: scale(1.8); opacity: 0; border-width: 1px; } }

.metro-counter {
  justify-self: start;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 84px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.8rem;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.metro-counter small { font-family: var(--font-body); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-gray); margin-top: 6px; }

.metro-status { margin: 0; min-height: 1.4em; font-size: .9rem; font-weight: 700; color: var(--color-accent); text-align: center; }
.metro-status.is-muted { color: var(--color-warn); }

.ramp-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; transition: opacity .2s ease; }
.ramp-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ramp-grid .field + .field { margin-top: 0; }
.ramp-grid .stepper { grid-template-columns: 36px minmax(0, 1fr) 36px; gap: 4px; }
.ramp-grid .stepper .icon-btn { width: 36px; height: 36px; }
.ramp-grid .stepper__value { height: 36px; font-size: 1rem; }
.ramp-grid .field__label { font-size: .8rem; }
.ramp-grid.is-off { opacity: .45; }
@media (max-width: 420px) {
  .ramp-grid { grid-template-columns: minmax(0, 1fr); }
  .ramp-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .metro-actions { gap: var(--space-2); }
  .metro-tap, .metro-counter { min-width: 64px; }
  .beat { width: 32px; height: 56px; }
  .beats--many .beat { width: 22px; height: 44px; }
  .beats { gap: 6px; }
}

/* =========================================================================
   v2: compás y subdivisión dentro del escenario, ajustes en pestañas
   ========================================================================= */
.metro-stage { gap: var(--space-2); }
.metro-quick {
  width: 100%;
  max-width: 460px;
  display: grid;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--color-hairline);
}
.metro-quick__row { display: grid; gap: 6px; min-width: 0; }
.metro-quick__label { display: flex; align-items: center; gap: 6px; font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--color-gray); }
.metro-quick__value { margin-left: auto; letter-spacing: .02em; text-transform: none; font-size: .82rem; color: var(--color-ink); }
/* Compases en una sola línea deslizable */
.metro-sig { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; padding: 2px 2px 4px; margin: -2px -2px -4px; }
.metro-sig::-webkit-scrollbar { display: none; }
.metro-sig button { flex: 1 0 auto; min-width: 48px; min-height: 36px; padding: 0 10px; }
.metro-sub button { min-height: 38px; }

/* Pestañas */
.metro-tabs { padding-top: 10px; }
.tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-hairline);
}
.tabs [role=tab] {
  position: relative;
  min-height: 36px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--color-gray);
  font-weight: 700;
  font-size: .82rem;
  transition: background .15s ease, color .15s ease;
  touch-action: manipulation;
}
.tabs [role=tab]:hover { color: var(--color-ink); }
.tabs [role=tab][aria-selected="true"] { background: var(--color-surface-3); color: var(--color-ink); box-shadow: var(--shadow-sm); }
.tab-dot { position: absolute; top: 7px; right: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 6px var(--color-accent-glow); opacity: 0; transform: scale(.5); transition: opacity .2s ease, transform .2s var(--ease); }
.tab-dot.is-on { opacity: 1; transform: none; }
.tab-pane { display: grid; gap: var(--space-2); animation: metro-fade .18s ease-out; }
.tab-pane .field + .field { margin-top: 0; }
@keyframes metro-fade { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: none; } }

/* Enlace a la caja de ritmos */
.metro-groove {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-media);
  border: 1px solid var(--color-hairline);
  background: linear-gradient(120deg, rgba(0, 205, 156, .1), rgba(0, 205, 156, 0) 60%), var(--color-surface);
  color: var(--color-ink-soft);
  font-size: .9rem;
  box-shadow: var(--shadow-sm);
  transition: border-color .2s ease, transform .2s var(--ease);
}
.metro-groove:hover { border-color: var(--color-accent); color: var(--color-ink-soft); transform: translateY(-1px); }
.metro-groove strong { color: var(--color-ink); display: block; }
.metro-groove__icon { width: 30px; height: 30px; color: var(--color-accent); flex: 0 0 auto; }
.metro-groove__icon svg { width: 100%; height: 100%; filter: drop-shadow(0 1px 1.5px rgba(0, 0, 0, .45)); }
.metro-groove__txt { flex: 1 1 auto; min-width: 0; }
.metro-groove__arrow { width: 18px; height: 18px; color: var(--color-gray); flex: 0 0 auto; transition: transform .2s var(--ease), color .2s ease; }
.metro-groove:hover .metro-groove__arrow { color: var(--color-accent); transform: translate(2px, -2px); }

.metro-tips p { margin: 0; font-size: .88rem; color: var(--color-ink-soft); }
.metro-tips strong { color: var(--color-ink); }

/* Tiempo que suena: pequeño salto */
.beat.is-active .beat__bar { animation: beat-hit .16s ease-out; }
@keyframes beat-hit { from { transform: scaleY(1.08); } to { transform: none; } }
.beat__bar { transform-origin: bottom; }

@media (max-width: 600px) {
  .metro-stage { gap: 12px; }
  .beats { min-height: 48px; padding-top: 14px; }
  .beat { height: 44px; }
  .beats--many .beat { height: 36px; }
  .metro-tempo { gap: 8px; }
  .metro-tempo .icon-btn--lg { width: 48px; height: 48px; }
  .readout__unit { margin-top: 4px; }
  .metro-actions { gap: 12px; }
  .metro-counter { font-size: 1.5rem; }
  .metro-quick { padding-top: 10px; gap: 8px; }
  .metro-status:empty { display: none; }
  .tabs [role=tab] { font-size: .76rem; }
}

@media (min-width: 601px) {
  .metro-stage { padding-top: var(--space-3); padding-bottom: var(--space-3); }
  .metro-stage .readout { font-size: clamp(4.5rem, 9vw, 6.4rem); }
  .beat { height: 56px; }
  .metro-quick { max-width: 520px; }
  .metro-quick__row { grid-template-columns: 112px minmax(0, 1fr); align-items: center; gap: 10px; }
  .metro-quick__label { flex-wrap: wrap; row-gap: 2px; }
  .metro-quick__value { margin-left: 0; width: 100%; font-size: .78rem; color: var(--color-ink-soft); }
  .metro-status:empty { display: none; }
}
@media (min-width: 601px) {
  .metro-quick { max-width: none; }
  .metro-sig { overflow: visible; }
  .metro-sig button { flex: 1 1 0; min-width: 0; padding: 0 6px; }
}