.pediatric-dose-calculator {
    max-width: 600px;
    margin: 20px auto;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.pdc-form-group {
    margin-bottom: 20px;
}

.pdc-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 14px;
}

.pdc-form-group select,
.pdc-form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.pdc-form-group select:focus,
.pdc-form-group input:focus {
    outline: none;
    border-color: #3498db;
}

.pdc-input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.pdc-calculate-btn {
    width: 100%;
    padding: 15px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.pdc-calculate-btn:hover {
    background: #2980b9;
}

.pdc-loading {
    text-align: center;
    padding: 20px;
    color: #7f8c8d;
    font-style: italic;
}

.pdc-results {
    margin-top: 30px;
    padding: 20px;
    background: white;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.pdc-result-section {
    margin-bottom: 25px;
}

.pdc-result-section h4 {
    margin: 0 0 15px 0;
    color: #2c3e50;
    font-size: 16px;
    border-bottom: 1px solid #ecf0f1;
    padding-bottom: 8px;
}

.pdc-dose-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.pdc-dose-value {
    text-align: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
}

.pdc-dose-value .value {
    font-size: 20px;
    font-weight: 700;
    color: #2c3e50;
    display: block;
}

.pdc-dose-value .label {
    font-size: 12px;
    color: #7f8c8d;
    margin-top: 5px;
}

.pdc-warning {
    padding: 15px;
    border-radius: 6px;
    margin: 10px 0;
    font-size: 14px;
}

.pdc-warning.overdose {
    background: #ffeaa7;
    border-left: 4px solid #fdcb6e;
    color: #e17055;
}

.pdc-warning.safe {
    background: #d1ecf1;
    border-left: 4px solid #17a2b8;
    color: #0c5460;
}

.pdc-drug-info {
    background: #e8f4f8;
    padding: 15px;
    border-radius: 6px;
    font-size: 13px;
    color: #2c3e50;
}

.pdc-drug-info p {
    margin: 5px 0;
}

/* Responsive design */
@media (max-width: 768px) {
    .pediatric-dose-calculator {
        margin: 10px;
        padding: 20px;
    }
    
    .pdc-input-grid {
        grid-template-columns: 1fr;
    }
}