:root {
  --va-primary: #2563eb;
  --va-primary-dark: #1d4ed8;
  --va-primary-light: #3b82f6;
  --va-accent: #10b981;
  --va-danger: #ef4444;
  --va-warning: #f59e0b;
  --va-bg: #0f172a;
  --va-surface: #1e293b;
  --va-surface-hover: #273548;
  --va-text: #f1f5f9;
  --va-text-muted: #94a3b8;
  --va-text-dim: #64748b;
  --va-border: #334155;
  --va-radius: 12px;
  --va-radius-sm: 8px;
  --va-radius-full: 50%;
  --va-shadow: 0 4px 6px -1px rgba(0,0,0,0.3);
  --va-shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.4);
  --va-font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --va-mic-size: 72px;
  --va-transition: 0.2s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--va-font);
  background: var(--va-bg);
  color: var(--va-text);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input {
  font-family: inherit;
  color: inherit;
}