:root{--color-bg: #f7f7f9;--color-bg-elevated: #ffffff;--color-text: #1a1a1a;--color-text-muted: #666666;--color-border: #e5e5e5;--color-primary: #6b46c1;--color-primary-contrast: #ffffff;--color-danger: #d33333;--color-success: #2e8b57}:root.dark{--color-bg: #121212;--color-bg-elevated: #1e1e1e;--color-text: #f2f2f2;--color-text-muted: #a0a0a0;--color-border: #333333;--color-primary: #9f7aea;--color-primary-contrast: #1a1a1a;--color-danger: #e57373;--color-success: #4caf50}*{box-sizing:border-box}body{margin:0;background:var(--color-bg);color:var(--color-text);transition:background-color .2s ease,color .2s ease;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.btn{display:inline-block;border:none;border-radius:6px;padding:.6rem 1.25rem;font-size:.95rem;cursor:pointer;text-decoration:none;text-align:center}.btn-primary{background:var(--color-primary);color:var(--color-primary-contrast)}.btn-secondary{background:var(--color-border);color:var(--color-text)}.btn:disabled{opacity:.5;cursor:not-allowed}.step-actions{display:flex;justify-content:flex-end;gap:.75rem;margin-top:1.5rem}