Connected Scatter Path

import matplotlib.pyplot as plt
import numpy as np

# === STYLE CONFIG ===
COLORS = {
    'path': '#A855F7',       # Purple
    'points': '#F59E0B',     # Amber
    'background': '#0F172A',
    'text': '#E2E8F0',
    'grid': '#334155',
}

# === DATA ===
np.random.seed(123)
n = 12
t = np.linspace(0, 2 * np.pi, n)
x = 5 + 3 * np.cos(t) + np.random.normal(0, 0.3, n)
y = 4 + 2.5 * np.sin(t) + np.random.normal(0, 0.3, n)

# === FIGURE ===
fig, ax = plt.subplots(figsize=(10, 6), dpi=100)
ax.set_facecolor(COLORS['background'])
fig.patch.set_facecolor(COLORS['background'])

# === PLOT ===
# Path with glow
for lw, alpha in [(10, 0.05), (6, 0.1), (3, 0.3), (1.5, 0.7)]:
    ax.plot(x, y, color=COLORS['path'], linewidth=lw, alpha=alpha)

# Points with glow
for xi, yi in zip(x, y):
    for s, alpha in [(300, 0.08), (150, 0.15), (70, 0.3)]:
        ax.scatter([xi], [yi], s=s, color=COLORS['points'], alpha=alpha)
    ax.scatter([xi], [yi], s=40, color=COLORS['points'],
               edgecolors='white', linewidths=1.5, zorder=5)

# === AXES ===
ax.set_xlim(0, 10)
ax.set_ylim(0, 8)
ax.set_xlabel('X', fontsize=10, color=COLORS['text'], labelpad=10)
ax.set_ylabel('Y', fontsize=10, color=COLORS['text'], labelpad=10)

# === STYLING ===
for spine in ax.spines.values():
    spine.set_visible(False)

ax.xaxis.grid(True, color=COLORS['grid'], linewidth=0.5, alpha=0.3)
ax.yaxis.grid(True, color=COLORS['grid'], linewidth=0.5, alpha=0.3)
ax.set_axisbelow(True)
ax.tick_params(axis='both', colors=COLORS['text'], labelsize=9, length=0, pad=8)

plt.tight_layout()
plt.show()