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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 16px;
    color: white;
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.calculator-card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.calculator-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.calculator-card.full-width {
    grid-column: 1 / -1;
}

.calculator-card h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.preset-buttons {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.preset-btn {
    padding: 10px 18px;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s;
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.preset-btn:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.2);
}

.preset-btn:active {
    transform: translateY(0);
}

.preset-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}

.calculate-btn {
    width: 100%;
    padding: 14px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: 8px;
}

.calculate-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.calculate-btn:active {
    transform: translateY(0);
}

.results-section {
    display: none;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 2px solid var(--border-color);
}

.results-header {
    margin-bottom: 24px;
}

.results-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

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

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.result-card {
    background: var(--background);
    padding: 20px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    transition: transform 0.2s;
}

.result-card:hover {
    transform: translateY(-2px);
}

.result-card.highlight {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.result-card.positive {
    border-color: var(--secondary-color);
    background: rgba(16, 185, 129, 0.05);
}

.result-card.negative {
    border-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.05);
}

.result-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.result-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.info-section {
    background: var(--background);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 24px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.info-value {
    font-weight: 600;
    color: var(--text-primary);
}

.info-value.positive {
    color: var(--secondary-color);
}

.info-value.negative {
    color: var(--danger-color);
}

.milestone-section {
    margin-top: 24px;
}

.milestone-section h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.milestone-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.milestone-table thead {
    background: var(--primary-color);
    color: white;
}

.milestone-table th,
.milestone-table td {
    padding: 12px 16px;
    text-align: left;
}

.milestone-table th {
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.milestone-table tbody tr {
    border-bottom: 1px solid var(--border-color);
}

.milestone-table tbody tr:last-child {
    border-bottom: none;
}

.milestone-table tbody tr:hover {
    background: var(--background);
}

.inflation-impact {
    margin-top: 24px;
    padding: 20px;
    background: var(--background);
    border-radius: 8px;
}

.inflation-impact h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.impact-item {
    background: white;
    padding: 16px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.impact-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.impact-value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.impact-value.positive {
    color: var(--secondary-color);
}

.impact-value.negative {
    color: var(--danger-color);
}

.impact-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.comparison-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.comparison-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.info-card {
    background: var(--background);
    padding: 20px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    text-align: center;
}

.info-card-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
    text-transform: uppercase;
}

.info-card-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.info-card-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.comparison-table-container {
    overflow-x: auto;
    margin-bottom: 24px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-table thead {
    background: var(--primary-color);
    color: white;
}

.comparison-table th,
.comparison-table td {
    padding: 14px 16px;
    text-align: left;
}

.comparison-table th {
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.comparison-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.comparison-table tbody tr:last-child {
    border-bottom: none;
}

.comparison-table tbody tr:hover {
    background: var(--background);
}

.comparison-table tbody tr.positive {
    background: rgba(16, 185, 129, 0.03);
}

.comparison-table tbody tr.negative {
    background: rgba(239, 68, 68, 0.03);
}

.comparison-table .positive {
    color: var(--secondary-color);
    font-weight: 600;
}

.comparison-table .negative {
    color: var(--danger-color);
    font-weight: 600;
}

.scenario-icon {
    font-size: 1.2rem;
    margin-right: 6px;
}

.comparison-insights {
    background: var(--background);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.comparison-insights h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.insights-list {
    list-style: none;
}

.insights-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    line-height: 1.6;
}

.insights-list li:last-child {
    border-bottom: none;
}

.reference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.reference-item {
    background: var(--background);
    padding: 20px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.reference-item h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 8px;
}

.reference-item ul {
    list-style: none;
}

.reference-item li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.reference-item li:last-child {
    border-bottom: none;
}

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

footer {
    text-align: center;
    padding: 32px 20px;
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-top: 40px;
}

footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .calculator-card {
        padding: 20px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .result-value {
        font-size: 1.5rem;
    }
    
    .preset-buttons {
        flex-direction: column;
    }
    
    .preset-btn {
        width: 100%;
    }
    
    .comparison-inputs {
        grid-template-columns: 1fr;
    }
    
    .reference-grid {
        grid-template-columns: 1fr;
    }
}

@media print {
    body {
        background: white;
    }
    
    .calculate-btn,
    .preset-buttons {
        display: none;
    }
    
    .calculator-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}