"""Shared matplotlib style (validated categorical palette, light surface, recessive axes)."""
import matplotlib
matplotlib.use("Agg")
import matplotlib.pyplot as plt

SURFACE = "#fcfcfb"
INK = "#0b0b0b"
INK2 = "#52514e"
GRID = "#e4e3df"
BLUE, ORANGE, AQUA, YELLOW, MAGENTA, GREEN, VIOLET, RED = (
    "#2a78d6", "#eb6834", "#1baf7a", "#eda100", "#e87ba4", "#008300", "#6250d6", "#e34948")
GREY = "#8c8b86"


def apply():
    plt.rcParams.update({
        "figure.facecolor": SURFACE, "axes.facecolor": SURFACE, "savefig.facecolor": SURFACE,
        "axes.edgecolor": GRID, "axes.labelcolor": INK2, "text.color": INK,
        "xtick.color": INK2, "ytick.color": INK2, "axes.grid": True, "grid.color": GRID,
        "grid.linewidth": 0.6, "axes.spines.top": False, "axes.spines.right": False,
        "font.size": 10, "axes.titlesize": 11, "axes.titleweight": "bold",
        "axes.titlelocation": "left", "legend.frameon": False, "legend.fontsize": 8.5,
        "lines.linewidth": 2.0, "figure.dpi": 150, "savefig.dpi": 170,
        "font.family": "DejaVu Sans",
    })
    return plt