.wfc-wrapper {
    font-family: system-ui, -apple-system, sans-serif;
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #fafafa;
}
.wfc-wrapper h2 { margin-top: 0; color: #1a365d; }
.wfc-desc { color: #555; margin-bottom: 20px; }
.wfc-columns { display: flex; gap: 24px; flex-wrap: wrap; margin-bottom: 24px; }
.wfc-panel { flex: 1; min-width: 280px; background: white; padding: 16px; border-radius: 6px; box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
.wfc-panel h3 { margin-top: 0; font-size: 1.1em; border-bottom: 1px solid #eee; padding-bottom: 8px; color: #000; }
.wfc-panel label { display: block; margin: 10px 0; font-size: 0.92em; }
.wfc-panel input[type="number"] {
    width: 100%; padding: 6px 8px; margin-top: 4px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box;
}
#wfc-reset { margin-top: 16px; padding: 8px 14px; background: #1a365d; color: white; border: none; border-radius: 4px; cursor: pointer; }
#wfc-reset:hover { background: #2c5282; }
.wfc-summary {
    background: white;
    padding: 16px 20px;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.wfc-summary h3 { margin-top: 0; }
#wfc-results { line-height: 1.6; }
#wfc-results .ok { color: #276749; font-weight: 500; }
#wfc-results .warn { color: #c05621; font-weight: 500; }
#wfc-results .bad { color: #c53030; font-weight: 500; }
#wfc-results .info { margin: 6px 0; }
@media (max-width: 700px) {
    .wfc-columns { flex-direction: column; }
}