body { font-family: Arial, sans-serif; background: #f4f4f4; padding: 20px; }
table { width: 100%; border-collapse: collapse; background: white; margin-top: 20px; }
th, td { border: 1px solid #ccc; padding: 10px; text-align: left; }
th { background: #333; color: white; }
tr.claimed { background-color: #d4edda; }
tr.unclaimed { background-color: #f8d7da; }
.btn { padding: 5px 10px; background: #007bff; color: white; border: none; cursor: pointer; }
.btn:disabled { background: grey; }