:root{--bg-color: #ffffff;--text-color: #000000;--grey-color: #666666;--border-color: #000000;--error-color: #dc2626;--success-color: #16a34a;--warning-color: #f59e0b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.5}.app{max-width:1100px;margin:0 auto;padding:0 16px 32px;min-height:100vh;display:flex;flex-direction:column}main{flex:1}h1{font-size:24px;font-weight:600;text-transform:lowercase}h2{font-size:18px;font-weight:600;text-transform:lowercase;margin-bottom:16px}h3{font-size:14px;font-weight:600;text-transform:lowercase}a{color:var(--text-color)}.unauthenticated{text-align:center;padding:60px 20px}.unauthenticated h2{margin-bottom:8px}.unauthenticated p{color:var(--grey-color);margin-bottom:24px}.sign-in-btn{display:inline-block;padding:10px 24px;border:1px solid var(--border-color);background:var(--text-color);color:var(--bg-color);text-decoration:none;font-size:14px}.sign-in-btn:hover{background:var(--bg-color);color:var(--text-color)}.nav-tabs{display:flex;gap:16px;border-bottom:1px solid var(--border-color);margin-bottom:24px;overflow-x:auto}.nav-tabs a{padding:8px 0;font-size:14px;color:var(--grey-color);text-decoration:none;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}.nav-tabs a:hover{color:var(--text-color)}.nav-tabs a.active{color:var(--text-color);border-bottom-color:var(--text-color)}footer{margin-top:32px;padding-top:16px;border-top:1px solid var(--border-color);color:var(--grey-color);font-size:12px}footer a{color:var(--grey-color);text-decoration:none}footer a:hover{color:var(--text-color)}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-bottom:24px}.stat-card{border:1px solid var(--border-color);padding:16px}.stat-value{font-size:24px;font-weight:600}.stat-value.success{color:var(--success-color)}.stat-value.warning{color:var(--warning-color)}.stat-value.error{color:var(--error-color)}.stat-label{font-size:12px;color:var(--grey-color);text-transform:lowercase}.expense-bar{display:flex;height:32px;border:1px solid var(--border-color);margin-bottom:16px;overflow:hidden}.expense-bar-segment{height:100%;display:flex;align-items:center;justify-content:center;font-size:10px;color:#fff;overflow:hidden;min-width:0}.expense-bar-segment:nth-child(1){background:#3b82f6}.expense-bar-segment:nth-child(2){background:#10b981}.expense-bar-segment:nth-child(3){background:#f59e0b}.expense-bar-segment:nth-child(4){background:#ef4444}.expense-bar-segment:nth-child(5){background:#8b5cf6}.expense-bar-segment:nth-child(n+6){background:#6b7280}table{width:100%;border-collapse:collapse}th{text-align:left;padding:8px;border-bottom:2px solid var(--border-color);font-size:12px;text-transform:lowercase;font-weight:600;cursor:pointer;white-space:nowrap}th:hover{background:#f5f5f5}td{padding:8px;border-bottom:1px solid #eee;font-size:14px}tr:hover td{background:#fafafa}th:last-child,td:last-child{text-align:right}th.sorted{color:var(--text-color)}th.sorted:after{content:" ↓"}th.sorted.asc:after{content:" 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button:not(:last-child){border-right:1px solid var(--border-color)}.view-toggle button.active{background:var(--text-color);color:var(--bg-color)}.empty-state{text-align:center;padding:40px;color:var(--grey-color)}.section{margin-bottom:32px}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.table-container{overflow-x:auto;margin:0 -16px;padding:0 16px}.loading{text-align:center;padding:40px;color:var(--grey-color)}.details-row td{background:#f9f9f9;border-bottom:1px solid #ddd}.details-row:hover td{background:#f5f5f5}.receipt-details{padding:8px 0}.detail-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px 24px}.detail-item{display:flex;flex-direction:column;gap:2px}.detail-label{font-size:11px;text-transform:uppercase;color:var(--grey-color);letter-spacing:.5px}.detail-value{font-size:14px;font-weight:500}@media (max-width: 768px){.nav-tabs{gap:12px}.nav-tabs a{font-size:13px}.stats-grid{grid-template-columns:repeat(2,1fr)}.filters{flex-direction:column;align-items:stretch}.filters select,.filters input{width:100%}.page-header{flex-direction:column;align-items:flex-start;gap:12px}.detail-grid{grid-template-columns:repeat(2,1fr)}}