from pathlib import Path
import re

src = Path('/mnt/data/cyber-chess_rebuilt_working.html')
text = src.read_text(encoding='utf-8')

# Improve board colors and piece contrast
replacements = {
    r'background:#cbd5e1;': 'background:#dbe7f5;',
    r'background:#475569;': 'background:#64748b;',
    r'color:#fff;': 'color:#f8fafc;',
}

for old, new in replacements.items():
    text = re.sub(old, new, text)

# Add stronger piece styles if not present
inject_css = """
.white-piece{
  color:#f8fafc !important;
  text-shadow:
    0 0 6px rgba(125,211,252,.45),
    0 0 2px rgba(255,255,255,.9);
  filter:brightness(1.08);
}

.black-piece{
  color:#111827 !important;
  text-shadow:
    0 0 3px rgba(226,232,240,.45);
  filter:contrast(1.25) brightness(.92);
}

.square.last-move{
  box-shadow: inset 0 0 0 4px rgba(56,189,248,.8);
}

.square.selected{
  box-shadow: inset 0 0 0 4px rgba(250,204,21,.9);
}
"""

if "</style>" in text:
    text = text.replace("</style>", inject_css + "\n</style>", 1)

# Attempt to add classes to unicode pieces
piece_map = {
    '♔':'white-piece','♕':'white-piece','♖':'white-piece','♗':'white-piece','♘':'white-piece','♙':'white-piece',
    '♚':'black-piece','♛':'black-piece','♜':'black-piece','♝':'black-piece','♞':'black-piece','♟':'black-piece',
}

# wrap standalone unicode chars in spans
for piece, cls in piece_map.items():
    text = text.replace(f">{piece}<", f'><span class="{cls}">{piece}</span><')

out = Path('/mnt/data/cyber-chess_highcontrast.html')
out.write_text(text, encoding='utf-8')

print(f"Saved updated file to {out}")