body {
  background: #0b0f1a;
}

.tc-card {
  width: 480px;
  max-width: 100%;
  background: #121728;
  color: #e6e9f2;
  border-radius: 1rem;
}

.tc-card .form-control,
.tc-card .form-select {
  background: #1a1a1a;
  color: #eee;
  border-color: #444;
}

.tc-card .form-control:focus,
.tc-card .form-select:focus {
  background: #1a1a1a;
  color: #eee;
  border-color: #666;
}

.tc-section-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #7fd;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.tc-result {
  color: #7fd;
  font-size: 1.4rem;
  min-height: 2rem;
  min-width: 4rem;
}