:root {
    --primary: #3498db;
    --secondary: #2ecc71;
    --danger: #e74c3c;
    --warning: #f39c12;
    --dark: #2c3e50;
    --light: #ecf0f1;
    --text: #333;
    --bg: #fff;
    --border: #ddd;
    --shadow: rgba(0,0,0,0.1);
}

.color-blind {
    --primary: #000000;
    --secondary: #404040;
    --danger: #808080;
    --warning: #bfbfbf;
    --dark: #000000;
    --light: #f2f2f2;
    --text: #000000;
    --bg: #ffffff;
    --border: #000000;
    --shadow: rgba(0,0,0,0.3);
}

#functional-age-calculator-wrapper * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#functional-age-calculator-wrapper {
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

#functional-age-calculator-wrapper header {
    text-align: center;
    margin-bottom: 30px;
}

#functional-age-calculator-wrapper .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 768px) {
    #functional-age-calculator-wrapper .container {
        grid-template-columns: 1fr;
    }
}

#functional-age-calculator-wrapper .card {
    background: var(--bg);
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
}

#functional-age-calculator-wrapper .form-group {
    margin-bottom: 15px;
}

#functional-age-calculator-wrapper label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

#functional-age-calculator-wrapper input, 
#functional-age-calculator-wrapper select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 16px;
}

#functional-age-calculator-wrapper button {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

#functional-age-calculator-wrapper button:hover {
    background-color: var(--dark);
}

#functional-age-calculator-wrapper button.secondary {
    background-color: var(--secondary);
}

#functional-age-calculator-wrapper button.danger {
    background-color: var(--danger);
}

#functional-age-calculator-wrapper button.warning {
    background-color: var(--warning);
}

#functional-age-calculator-wrapper button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

#functional-age-calculator-wrapper .button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

#functional-age-calculator-wrapper .button-group button {
    flex: 1;
}

#functional-age-calculator-wrapper .trademark {
    position: fixed;
    bottom: 10px;
    right: 10px;
    font-size: 12px;
    color: var(--dark);
}

#functional-age-calculator-wrapper .color-blind-toggle {
    position: fixed;
    top: 10px;
    right: 10px;
    background: var(--warning);
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
    z-index: 1000;
}

#functional-age-calculator-wrapper .results-section {
    margin-top: 30px;
}

#functional-age-calculator-wrapper .results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

#functional-age-calculator-wrapper .chart-container {
    height: 300px;
    margin-top: 20px;
}

#functional-age-calculator-wrapper canvas {
    width: 100%;
    height: 100%;
}

#functional-age-calculator-wrapper .step-by-step {
    background-color: var(--light);
    padding: 15px;
    border-radius: 5px;
    margin-top: 20px;
    max-height: 400px;
    overflow-y: auto;
}

#functional-age-calculator-wrapper .step {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

#functional-age-calculator-wrapper .step:last-child {
    border-bottom: none;
}

#functional-age-calculator-wrapper .batch-section {
    margin-top: 30px;
}

#functional-age-calculator-wrapper .progress-container {
    margin-top: 20px;
    display: none;
}

#functional-age-calculator-wrapper .progress-bar {
    height: 20px;
    background-color: var(--light);
    border-radius: 10px;
    overflow: hidden;
}

#functional-age-calculator-wrapper .progress-fill {
    height: 100%;
    background-color: var(--secondary);
    width: 0%;
    transition: width 0.3s;
}

#functional-age-calculator-wrapper .cancel-button {
    margin-top: 10px;
    background-color: var(--danger);
}

#functional-age-calculator-wrapper .export-button {
    background-color: var(--secondary);
    font-size: 12px;
    border-radius: 6px;
    margin-top: 10px;
}

#functional-age-calculator-wrapper .recommendations {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--light);
    border-radius: 5px;
}

#functional-age-calculator-wrapper .print-button {
    margin-top: 20px;
}

#functional-age-calculator-wrapper .hidden {
    display: none;
}

#functional-age-calculator-wrapper .batch-results {
    margin-top: 20px;
}

#functional-age-calculator-wrapper .batch-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

#functional-age-calculator-wrapper .batch-table th, 
#functional-age-calculator-wrapper .batch-table td {
    border: 1px solid var(--border);
    padding: 8px;
    text-align: left;
}

#functional-age-calculator-wrapper .batch-table th {
    background-color: var(--light);
}