frontend/src/components/PlaybackControls.css

.playback-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 12px;
  margin: 1.5rem 0;
  flex-wrap: wrap;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border: 1px solid #dee2e6;
}

.playback-controls button {
  padding: 0.6rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 500;
  border: 2px solid #dee2e6;
  background: white;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.playback-controls button:hover:not(:disabled) {
  background: #007bff;
  border-color: #007bff;
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 3px 6px rgba(0, 123, 255, 0.2);
}

.playback-controls button:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.playback-controls button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: #f8f9fa;
}

.playback-controls button.active {
  background: #007bff;
  border-color: #007bff;
  color: white;
}

.tempo-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: white;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid #dee2e6;
}

.tempo-control label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #495057;
}

.tempo-control input[type="range"] {
  width: 150px;
  height: 6px;
  border-radius: 3px;
  background: #dee2e6;
  outline: none;
  -webkit-appearance: none;
}

.tempo-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #007bff;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 123, 255, 0.3);
  transition: all 0.2s ease;
}

.tempo-control input[type="range"]::-webkit-slider-thumb:hover {
  background: #0056b3;
  transform: scale(1.1);
  box-shadow: 0 3px 6px rgba(0, 123, 255, 0.4);
}

.tempo-control input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #007bff;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 4px rgba(0, 123, 255, 0.3);
  transition: all 0.2s ease;
}

.tempo-control input[type="range"]::-moz-range-thumb:hover {
  background: #0056b3;
  transform: scale(1.1);
  box-shadow: 0 3px 6px rgba(0, 123, 255, 0.4);
}

.tempo-control span {
  font-weight: 600;
  color: #007bff;
  min-width: 40px;
  text-align: center;
}

.time-display {
  font-size: 0.95rem;
  color: #495057;
  font-family: 'Courier New', monospace;
  font-weight: 500;
  background: white;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  border: 1px solid #dee2e6;
}

.volume-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.volume-control label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: #495057;
}

.volume-control input[type="range"] {
  width: 100px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .playback-controls {
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem;
  }

  .playback-controls button {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }

  .tempo-control {
    width: 100%;
    justify-content: space-between;
  }

  .time-display {
    width: 100%;
    text-align: center;
  }
}