.calculator-card {
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: none;
    margin-bottom: 20px;
}
.form-label {
    font-weight: 600;
    color: #495057;
}
.input-group-text {
    background-color: #f8f9fa;
    font-weight: 500;
}
.btn-calculate {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    border: none;
    color: white;
    font-weight: 600;
    padding: 12px 20px;
    border-radius: 8px;
    transition: all 0.3s;
}
.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(106, 17, 203, 0.25);
}
.btn-secondary-action {
    background-color: #6c757d;
    color: white;
    border-radius: 8px;
    padding: 10px 16px;
    font-weight: 500;
}
.btn-secondary-action:hover {
    background-color: #5a6268;
    color: white;
}
.result-container {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
    border-left: 5px solid #2575fc;
}
.result-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2575fc;
    word-break: break-all;
}
.formula-display {
    background-color: #f0f7ff;
    border-radius: 8px;
    padding: 15px;
    margin-top: 15px;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    border: 1px dashed #b3d7ff;
}
.example-item {
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 6px;
    margin-bottom: 8px;
    border-left: 4px solid transparent;
    transition: all 0.2s;
}
.example-item:hover {
    background-color: #e9ecef;
    border-left-color: #2575fc;
}
.example-title {
    font-weight: 600;
    color: #495057;
}
.example-desc {
    font-size: 0.9rem;
    color: #6c757d;
}
.alert-custom {
    border-radius: 10px;
    border-left: 5px solid #2575fc;
}