.reading-mode-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  margin: 1rem auto 2rem;
  max-width: 900px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  font-size: 0.875rem;
}

.reading-mode-label {
  color: #64748b;
  font-weight: 500;
  margin-right: 0.25rem;
}

.reading-mode-btn {
  padding: 0.375rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.375rem;
  background: white;
  color: #475569;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s;
}

.reading-mode-btn:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

.reading-mode-btn.active {
  background: #1e40af;
  color: white;
  border-color: #1e40af;
}

.reading-mode-estimate {
  margin-left: auto;
  color: #94a3b8;
  font-size: 0.8rem;
}

@media (max-width: 640px) {
  .reading-mode-toggle {
    flex-wrap: wrap;
    padding: 0.5rem 1rem;
  }
}