#beats {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: fit-content;
  max-width: calc(100% - 2rem);
  margin: 1.5rem auto;
  padding: 1.5rem 1.75rem;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  backdrop-filter: blur(3px) saturate(140%);
  -webkit-backdrop-filter: blur(3px) saturate(140%);
  box-shadow: 0 0 70px rgba(168, 85, 247, 0.08), 0 20px 50px rgba(0, 0, 0, 0.45);
}

#beats-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.85rem;
  color: var(--fg-dim);
}

#beats-play {
  color: var(--accent);
  font-weight: 500;
  cursor: default;
}

#beats-bpm {
  font-variant-numeric: tabular-nums;
  color: var(--accent-2);
}

#beats-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-x: auto;
  max-width: 100%;
  padding-bottom: 2px;
}

.beats-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.beats-row-label {
  flex: 0 0 auto;
  width: 48px;
  font-size: 0.72rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.beats-cells {
  display: flex;
  gap: 4px;
}

.beats-cell {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  padding: 0;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--panel-border);
  cursor: pointer;
  transition: background 0.08s ease, border-color 0.08s ease;
}

.beats-cell.beat-start {
  border-color: rgba(255, 255, 255, 0.22);
}

.beats-cell:hover {
  border-color: var(--accent);
}

.beats-cell.on {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.beats-cell.playhead {
  box-shadow: 0 0 0 2px var(--accent) inset;
}

#beats-hint {
  font-size: 0.78rem;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
  text-align: center;
}

@media (max-width: 700px) {
  #beats {
    margin: 3.5rem 1rem 1.5rem;
    padding: 1rem;
  }
}