:root{--bg-primary: #0a0a0a;--bg-secondary: #111111;--bg-tertiary: #1a1a1a;--bg-card: #141414;--bg-hover: #222222;--bg-input: #1a1a1a;--border: #2a2a2a;--border-strong: #3d3d3d;--border-accent: #555555;--text-primary: #ffffff;--text-secondary: #a0a0a0;--text-muted: #606060;--text-disabled: #3d3d3d;--accent: #ffffff;--accent-dim: rgba(255,255,255,.08);--success: #22c55e;--success-bg: rgba(34,197,94,.1);--warning: #f59e0b;--warning-bg: rgba(245,158,11,.1);--danger: #ef4444;--danger-bg: rgba(239,68,68,.1);--info: #3b82f6;--info-bg: rgba(59,130,246,.1);--radius-sm: 4px;--radius: 8px;--radius-lg: 12px;--shadow: 0 1px 3px rgba(0,0,0,.5);--shadow-lg: 0 4px 24px rgba(0,0,0,.6);--font-sans: "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", monospace;--sidebar-width: 240px;--sidebar-collapsed: 64px;--topbar-height: 60px;--transition: all .15s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:14px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.5;overflow-x:hidden}::-webkit-scrollbar{width:4px;height:4px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--border-accent)}::selection{background:#ffffff26;color:var(--text-primary)}:focus-visible{outline:1.5px solid var(--border-accent);outline-offset:2px}.app-shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:width .2s ease;overflow:hidden}.sidebar.collapsed{width:var(--sidebar-collapsed)}.main-content{margin-left:var(--sidebar-width);flex:1;display:flex;flex-direction:column;min-height:100vh;transition:margin-left .2s ease}.main-content.sidebar-collapsed{margin-left:var(--sidebar-collapsed)}.topbar{height:var(--topbar-height);background:var(--bg-secondary);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50}.page-content{padding:24px;flex:1;max-width:1400px;width:100%}.sidebar-logo{height:var(--topbar-height);display:flex;align-items:center;padding:0 16px;border-bottom:1px solid var(--border);gap:10px;overflow:hidden;white-space:nowrap}.sidebar-logo img{width:32px;height:32px;object-fit:contain;border-radius:4px}.sidebar-logo-text{font-weight:800;font-size:15px;letter-spacing:.5px}.sidebar-nav{flex:1;overflow-y:auto;padding:8px}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius);cursor:pointer;color:var(--text-secondary);font-size:13px;font-weight:500;transition:var(--transition);white-space:nowrap;overflow:hidden;text-decoration:none;margin-bottom:2px}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--text-primary);color:var(--bg-primary)}.nav-item .nav-icon{flex-shrink:0;width:18px;height:18px}.nav-item .nav-label{font-size:13px}.sidebar-footer{padding:12px 8px;border-top:1px solid var(--border)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.card-sm{padding:16px}.kpi-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;transition:var(--transition)}.kpi-card:hover{border-color:var(--border-strong);background:var(--bg-hover)}.kpi-card .label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:8px}.kpi-card .value{font-size:28px;font-weight:800;font-family:var(--font-mono);color:var(--text-primary);line-height:1}.kpi-card .sub{font-size:11px;color:var(--text-muted);margin-top:6px}.kpi-card .icon{width:36px;height:36px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;margin-bottom:12px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);font-size:13px;font-weight:600;font-family:var(--font-sans);cursor:pointer;border:1px solid transparent;transition:var(--transition);text-decoration:none;white-space:nowrap}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--text-primary);color:var(--bg-primary);border-color:var(--text-primary)}.btn-primary:hover:not(:disabled){background:#e5e5e5}.btn-secondary{background:transparent;color:var(--text-primary);border-color:var(--border-strong)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover);border-color:var(--border-accent)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background:var(--bg-hover);color:var(--text-primary)}.btn-danger{background:var(--danger-bg);color:var(--danger);border-color:var(--danger)}.btn-danger:hover:not(:disabled){background:var(--danger);color:#fff}.btn-success{background:var(--success-bg);color:var(--success);border-color:var(--success)}.btn-sm{padding:5px 10px;font-size:12px}.btn-lg{padding:12px 24px;font-size:15px}.btn-icon{padding:8px;width:36px;height:36px;justify-content:center}.form-group{margin-bottom:16px}.form-label{display:block;font-size:12px;font-weight:600;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.form-label.required:after{content:" *";color:var(--danger)}.input,.select,.textarea{width:100%;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);padding:9px 12px;font-size:14px;font-family:var(--font-sans);color:var(--text-primary);transition:var(--transition);outline:none}.input:focus,.select:focus,.textarea:focus{border-color:var(--border-accent);background:var(--bg-hover)}.input::placeholder{color:var(--text-muted)}.select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23606060' stroke-width='2'%3E%3Cpath d='M6 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16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:20px}.filter-bar .input,.filter-bar .select{max-width:180px}.date-preset-bar{display:flex;gap:6px;flex-wrap:wrap}.preset-btn{padding:5px 12px;border-radius:20px;font-size:12px;font-weight:600;cursor:pointer;border:1px solid var(--border);background:transparent;color:var(--text-secondary);transition:var(--transition)}.preset-btn:hover{border-color:var(--border-accent);color:var(--text-primary)}.preset-btn.active{background:var(--text-primary);color:var(--bg-primary);border-color:var(--text-primary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;z-index:200;display:flex;align-items:center;justify-content:center;padding:20px}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}.modal-sm{max-width:400px}.modal-md{max-width:600px}.modal-lg{max-width:800px}.modal-xl{max-width:1000px}.modal-header{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.modal-title{font-size:16px;font-weight:700}.modal-body{padding:24px}.modal-footer{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state svg{opacity:.3;margin-bottom:16px}.empty-state h3{font-size:15px;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.empty-state p{font-size:13px}.skeleton{background:linear-gradient(90deg,var(--bg-card) 25%,var(--bg-hover) 50%,var(--bg-card) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--text-primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary)}.login-card{width:100%;max-width:380px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px}.login-logo{text-align:center;margin-bottom:32px}.login-logo img{width:80px;height:80px;object-fit:contain;border-radius:var(--radius)}.login-title{font-size:22px;font-weight:900;letter-spacing:-.5px;text-align:center;margin-bottom:4px}.login-sub{font-size:12px;color:var(--text-muted);text-align:center;margin-bottom:32px;text-transform:uppercase;letter-spacing:1px}.alert{padding:12px 16px;border-radius:var(--radius);font-size:13px;border:1px solid}.alert-success{background:var(--success-bg);color:var(--success);border-color:var(--success)}.alert-danger{background:var(--danger-bg);color:var(--danger);border-color:var(--danger)}.alert-warning{background:var(--warning-bg);color:var(--warning);border-color:var(--warning)}.alert-info{background:var(--info-bg);color:var(--info);border-color:var(--info)}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:20px}.tab{padding:8px 16px;font-size:13px;font-weight:600;cursor:pointer;color:var(--text-muted);border-bottom:2px solid transparent;margin-bottom:-1px;transition:var(--transition)}.tab:hover{color:var(--text-secondary)}.tab.active{color:var(--text-primary);border-bottom-color:var(--text-primary)}.divider{height:1px;background:var(--border);margin:20px 0}.bill-item-row{display:grid;grid-template-columns:2fr 1.5fr .8fr 1fr 1fr 1fr 40px;gap:8px;align-items:center;padding:10px 0;border-bottom:1px solid var(--border)}.bill-summary-row{display:flex;justify-content:space-between;align-items:center;padding:6px 0;font-size:13px}.bill-summary-row.total{font-size:16px;font-weight:800;border-top:1px solid var(--border);padding-top:10px;margin-top:4px}.pay-pill{padding:4px 10px;border-radius:20px;font-size:12px;font-weight:700;text-transform:uppercase;cursor:pointer;border:1px solid;transition:var(--transition)}.pay-pill.cash{border-color:var(--success);color:var(--success)}.pay-pill.card{border-color:var(--info);color:var(--info)}.pay-pill.upi{border-color:var(--warning);color:var(--warning)}.pay-pill.selected.cash{background:var(--success);color:#000}.pay-pill.selected.card{background:var(--info);color:#fff}.pay-pill.selected.upi{background:var(--warning);color:#000}@media (max-width: 1024px){.grid-5{grid-template-columns:repeat(3,1fr)}.grid-7{grid-template-columns:repeat(4,1fr)}.grid-4{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.sidebar{transform:translate(-100%)}.sidebar.mobile-open{transform:translate(0)}.main-content{margin-left:0!important}.page-content{padding:16px}.grid-3,.grid-4,.grid-5,.grid-7{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}.filter-bar{flex-direction:column;align-items:stretch}.filter-bar .input,.filter-bar .select{max-width:none}.bill-item-row{grid-template-columns:1fr 1fr;gap:6px}}