:root {
  --color-primary: #8b5cf6;
  --color-primary-hover: #7c3aed;
  --color-primary-muted: rgba(139, 92, 246, 0.16);
  --color-primary-border: rgba(139, 92, 246, 0.32);
  --color-bg-deep: #0b0f1a;
  --color-bg-surface: #0f1424;
  --color-bg-elevated: #151c32;
  --color-text: #f9fafb;
  --color-text-secondary: rgba(255, 255, 255, 0.72);
  --color-text-muted: rgba(255, 255, 255, 0.48);
  --color-border: rgba(255, 255, 255, 0.10);
  --color-border-strong: rgba(255, 255, 255, 0.14);
  --color-error: #f87171;
  --color-error-bg: rgba(248, 113, 113, 0.12);
  --color-success: #4ade80;
  --color-success-bg: rgba(74, 222, 128, 0.12);
  --font-sans: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 18px;
  --radius-pill: 999px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 150ms;
  --duration-normal: 220ms;
  --shadow-card: 0 18px 48px rgba(0, 0, 0, 0.28);
  --shadow-btn: 0 10px 26px rgba(139, 92, 246, 0.28);
}