:root{--color-bg:#1a1a1a;--color-surface:#2a2a2a;--color-border:#404040;--color-text:#fff;--color-text-muted:#ccc;--color-primary:#06c;--color-success:#28a745;--color-warning:orange;--color-input-bg:#333;--sidebar-width:350px;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Roboto","Oxygen","Ubuntu","Cantarell","Fira Sans","Droid Sans","Helvetica Neue",sans-serif;--font-mono:source-code-pro,Menlo,Monaco,Consolas,"Courier New",monospace}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--color-bg);color:var(--color-text);line-height:1.6}code{font-family:var(--font-mono)}.App{background-color:var(--color-bg);min-height:100vh}.container{height:100vh;min-height:100vh;display:flex;overflow:hidden}.main-content{height:100vh;margin-left:var(--sidebar-width);box-sizing:border-box;flex:1;padding:20px;overflow-y:auto}@media (max-width:1200px){:root{--sidebar-width:300px}}@media (max-width:768px){.container{flex-direction:column;height:auto;overflow:visible}.main-content{order:1;height:auto;margin-left:0}}.header{margin-bottom:30px}.header h1{color:var(--color-text);margin-bottom:10px;font-size:28px;font-weight:600}.header p{color:var(--color-text-muted);font-size:16px;line-height:1.5}.calculator-grid{grid-template-columns:1fr 1fr;gap:30px;margin-bottom:30px;display:grid}@media (max-width:768px){.calculator-grid{grid-template-columns:1fr}}.input-group{margin-bottom:15px}.input-group label{color:var(--color-text-muted);margin-bottom:8px;font-size:14px;display:block;position:relative}.currency-display{border:1px solid var(--color-border);background-color:var(--color-input-bg);color:var(--color-text);text-align:center;border-radius:4px;justify-content:center;align-items:center;min-height:40px;padding:10px;font-size:14px;display:flex}.chart-wrapper{flex:1;height:300px;position:relative}.investment-returns-chart-container h4,.income-metrics-chart-container h4{color:var(--color-text);text-align:center;margin-bottom:15px;font-size:16px;font-weight:600}.info-icon{color:var(--color-primary);cursor:help;opacity:.8;margin-left:8px;font-size:14px;font-weight:400;transition:opacity .2s;display:inline-block}.info-icon:hover{opacity:1}