:root {
  --theme-primary: #667eea;
  --theme-primary-dark: #764ba2;
  --theme-surface: #fbfbff;
  --color-primary: var(--theme-primary);
  --color-primary-dark: var(--theme-primary-dark);
}

body {
  background: linear-gradient(180deg, #f4f4ff 0%, var(--theme-surface) 26%);
}

.card-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card:first-child {
  grid-column: span 2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-border: #334155;
  }
}