#formula-panel {
    padding: 1rem;
    background: #f8fafc;
    border: 1px solid #dbe3ef;
    border-radius: 0.75rem;
    min-height: 140px;
}

#formula-panel h4 {
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.formula-expression {
    background: #ffffff;
    border: 1px solid #dbe3ef;
    border-radius: 0.5rem;
    padding: 1rem;
    font-size: 1.1rem;
    overflow-x: auto;
    text-align: center;
}

.dark-mode #formula-panel {
    background: #0f172a;
    border-color: #334155;
}

.dark-mode #formula-panel h4 {
    color: #f8fafc;
}

.dark-mode .formula-expression {
    background: #111827;
    border-color: #334155;
    color: #f8fafc;
}