body {
  background: linear-gradient(135deg, #232324 0%, #343435 100%);
  min-height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
  border: none;
  border-radius: 15px;
}

.card-title {
  color: #667eea;
  font-weight: 600;
}

#statusBadge {
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
}

.badge.bg-success {
  background-color: #10b981 !important;
}

.badge.bg-danger {
  background-color: #ef4444 !important;
}

.badge.bg-warning {
  background-color: #f59e0b !important;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  transition: transform 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.audio-visualizer {
  background: #f8f9fa;
  border-radius: 10px;
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#visualizer {
  max-width: 100%;
  height: auto;
}

audio {
  border-radius: 10px;
  outline: none;
}

.alert {
  border-radius: 10px;
  border: none;
}

.form-range::-webkit-slider-thumb {
  background: #667eea;
}

.form-range::-moz-range-thumb {
  background: #667eea;
}