library(ggplot2)

ggplot(mtcars, aes(x = wt, y = mpg, color = factor(cyl))) +
  geom_point(size = 3, alpha = 0.8) +
  geom_smooth(method = "lm", se = FALSE, linewidth = 0.8) +
  scale_color_manual(
    values = c("4" = "#7F5AF0", "6" = "#E09F3E", "8" = "#2D3A3A"),
    name = "Cylinders"
  ) +
  labs(
    x = "Weight (1,000 lbs)",
    y = "Miles per gallon"
  ) +
  theme_minimal(base_family = "sans") +
  theme(
    plot.background = element_rect(fill = "#FAF8F4", color = NA),
    panel.background = element_rect(fill = "#FAF8F4", color = NA),
    panel.grid.minor = element_blank(),
    panel.grid.major = element_line(color = "#E5E7EB"),
    legend.position = "top"
  )