:root{--color-primary:#1d4ed8;--color-secondary:#2563eb;--color-bg:#fff;--color-bg-alt:#f8fafc;--color-text:#1f2937;--color-text-light:#64748b;--color-border:#e2e8f0}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--color-text);background-color:var(--color-bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}a{color:var(--color-secondary);text-decoration:none}a:hover{text-decoration:underline}.btn{background-color:var(--color-primary);color:#fff;cursor:pointer;border:none;border-radius:4px;padding:.5rem 1rem;font-size:1rem;display:inline-block}.btn:hover{opacity:.9}.btn:disabled{opacity:.6;cursor:not-allowed}.btnDanger{background-color:#dc2626}.input{border:1px solid var(--color-border);width:100%;font:inherit;border-radius:4px;margin-bottom:1rem;padding:.5rem}