:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --luxury-color: #e74c3c;
    --essential-color: #27ae60;
    --warning-color: #f39c12;
    --bg-light: #f8f9fa;
    --bg-dark: #2c3e50;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --border-color: #dee2e6;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 2rem 0;
    box-shadow: var(--shadow);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

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

.built-with {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.2);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.built-with:hover {
    background: rgba(255,255,255,0.3);
}

/* Metrics Section */
.metrics-section {
    padding: 3rem 0;
}

.metrics-section h2 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: var(--primary-color);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.metric-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.metric-card h3 {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.metric-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 0.5rem 0;
}

.metric-card.luxury .metric-value {
    color: var(--luxury-color);
}

.metric-card.essential .metric-value {
    color: var(--essential-color);
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Chart Sections */
.chart-section {
    padding: 3rem 0;
}

.chart-section.alt-bg {
    background: white;
}

.chart-section h2 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: var(--primary-color);
}

.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.chart-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.chart-container-wide {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.category-breakdown {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.category-breakdown h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

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

.category-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.category-amount {
    font-weight: bold;
    color: var(--primary-color);
}

/* Trend Insights */
.trend-insights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.insight-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
}

.insight-card h4 {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.insight-card p {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Transfer Analysis */
.analysis-section {
    padding: 3rem 0;
    background: white;
}

.analysis-section h2 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: var(--primary-color);
}

.transfer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.transfer-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.transfer-card h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.transfer-amount {
    font-size: 2.5rem;
    font-weight: bold;
    margin: 1rem 0;
}

.transfer-count {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Comparison Container */
.comparison-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

/* Spending Advice */
.spending-advice {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.spending-advice h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.spending-advice ul {
    list-style: none;
    padding: 0;
}

.spending-advice li {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--bg-light);
    border-radius: 5px;
    border-left: 4px solid var(--secondary-color);
}

/* Table Section */
.table-section {
    padding: 3rem 0;
}

.table-section h2 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: var(--primary-color);
}

.table-container {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
}

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

th, td {
    padding: 1rem;
    text-align: left;
}

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

tbody tr:hover {
    background: var(--bg-light);
}

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

/* Recommendations Section */
.recommendations-section {
    padding: 3rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.recommendations-section h2 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: white;
    text-align: center;
}

.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.recommendation-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s;
}

.recommendation-card:hover {
    transform: translateY(-5px);
}

.rec-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.recommendation-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.recommendation-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .trend-insights {
        grid-template-columns: 1fr;
    }
    
    .transfer-grid {
        grid-template-columns: 1fr;
    }
    
    .recommendations-grid {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .metric-value {
        font-size: 1.5rem;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    table {
        min-width: 600px;
    }
}

/* Loading State */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.metric-card, .chart-container, .insight-card, .transfer-card, .recommendation-card {
    animation: fadeIn 0.6s ease-out;
}