:root{
  --color-bg: #14181C;
  --color-bg-alt: #1E262D;
  --color-surface: #1B2228;
  --color-text: #EDF1F5;
  --color-text-muted: #8FA0AD;
  --color-primary: #336699;
  --color-primary-dark: #22475F;
  --color-secondary: #55677A;
  --color-accent: #D9782D;
  --color-border: #2E3A43;
  --color-danger: #C0392B;
  --color-success: #3C8C5C;
}
[data-theme="winter"]{ --color-primary:#2E5F8F; --color-accent:#8FB8DD; --color-bg-alt:#1A222A; --color-border:#2A3640; }
[data-theme="spring"]{ --color-primary:#2F6B7A; --color-accent:#C9A24C; --color-bg-alt:#1A2622; --color-border:#2A3B33; }
[data-theme="summer"]{ --color-primary:#336699; --color-accent:#E0952E; --color-bg-alt:#1E262D; --color-border:#2E3A43; }
[data-theme="autumn"]{ --color-primary:#336699; --color-accent:#D9782D; --color-bg-alt:#1E262D; --color-border:#2E3A43; }