:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--sidebar-width: 260px;--bg-main: #f1f5f9;--sidebar-dark: #0f172a;--primary: #3b82f6;--text-main: #334155;--white: #ffffff}body{margin:0;font-family:Inter,sans-serif;background-color:var(--bg-main);color:var(--text-main)}.dashboard-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background-color:var(--sidebar-dark);color:#fff;padding:2rem 0;display:flex;flex-direction:column}.sidebar-brand{font-size:1.5rem;font-weight:700;text-align:center;margin-bottom:3rem;color:var(--primary)}.sidebar-nav{display:flex;flex-direction:column;gap:.5rem}.nav-item{color:#94a3b8;text-decoration:none;padding:1rem 2rem;transition:all .3s}.nav-item:hover{background-color:#1e293b;color:#fff}.main-content{flex:1;padding:2rem}.card,.view-container{background:var(--white);padding:2rem;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a}.expense-form{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2rem}.expense-form input,.expense-form select{padding:.75rem;border:1px solid #e2e8f0;border-radius:6px}.expense-table{width:100%;border-collapse:collapse;margin-top:1rem}.expense-table th{text-align:left;border-bottom:2px solid #f1f5f9;padding:1rem}.expense-table td{padding:1rem;border-bottom:1px solid #f1f5f9}button{background:var(--primary);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:6px;cursor:pointer}.btn-delete{background:#ef4444;margin-left:5px}.btn-edit{background:#f59e0b}