:root {
    --primary-color: #007bff;
    --success-color: #28a745;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --border-color: #333333;
    --input-bg: #1a1a1a;
    --card-bg: #2a2a2a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #000000;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--text-primary);
}

.main-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.calculator-container {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 30px;
    border: 1px solid var(--border-color);
}

.calculator-header {
    text-align: center;
    margin-bottom: 30px;
}

.calculator-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.calculator-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    background: var(--input-bg);
    color: var(--text-primary);
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.calculate-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    margin-top: 20px;
}

.calculate-btn:hover {
    background: #0056b3;
}

.result {
    margin-top: 20px;
    padding: 20px;
    background: var(--input-bg);
    border-radius: 4px;
    text-align: center;
    display: none;
    border: 1px solid var(--border-color);
}

.result.show {
    display: block;
}

.result-title {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 1.2rem;
    font-weight: 600;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--success-color);
    margin-bottom: 10px;
    font-family: monospace;
}

.result-details {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 15px;
}

.inflation-rate {
    padding: 10px;
    background: var(--success-color);
    border-radius: 4px;
    color: white;
    font-weight: 500;
    font-size: 0.9rem;
    display: inline-block;
}

.examples {
    margin-top: 20px;
    padding: 20px;
    background: var(--input-bg);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.examples-title {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
}

.examples-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.example-item {
    padding: 12px;
    background: var(--card-bg);
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.9rem;
}

.example-item:hover {
    background: #333333;
}

.example-item strong {
    color: var(--primary-color);
    font-weight: 600;
}


@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-container {
        padding: 20px;
    }
}