:root{--bg:#f4f6fb;--surface:#fff;--border:#e6e9f0;--border-strong:#d4d9e4;--text:#1b2333;--text-soft:#5a6478;--muted:#8a93a6;--brand:#3b6fe0;--brand-dark:#2c55b8;--brand-soft:#eaf0fd;--green:#1f9d62;--amber:#c98a06;--red:#d4453b;--shadow:0 1px 2px #121c330a, 0 4px 16px #121c330d;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Apple SD Gothic Neo,Malgun Gothic,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);-webkit-font-smoothing:antialiased}button{cursor:pointer;font-family:inherit}input,select{font-family:inherit}.app-shell{grid-template-columns:244px 1fr;height:100vh;display:grid;overflow:hidden}.app-shell.collapsed{grid-template-columns:0 1fr}.sidebar{border-right:1px solid var(--border);background:#fff;flex-direction:column;display:flex;overflow:hidden}.app-shell.collapsed .sidebar{border-right:none}.brand{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:18px 18px 14px;display:flex}.brand-logo{background:linear-gradient(135deg, var(--brand), var(--brand-dark));color:#fff;border-radius:10px;flex:none;place-items:center;width:38px;height:38px;display:grid}.brand-text{flex-direction:column;line-height:1.2;display:flex}.brand-name{letter-spacing:-.3px;font-size:17px;font-weight:800}.brand-sub{color:var(--muted);font-size:11.5px}.nav{flex-direction:column;flex:1;gap:2px;padding:12px 10px;display:flex}.nav-item{color:var(--text-soft);text-align:left;background:0 0;border:none;border-radius:9px;align-items:center;gap:10px;padding:10px 12px;font-size:14px;font-weight:600;display:flex}.nav-item:hover{color:var(--text);background:#f3f5fa}.nav-item.active{background:var(--brand-soft);color:var(--brand-dark)}.sidebar-foot{border-top:1px solid var(--border);padding:14px}.reset-btn{border:1px solid var(--border-strong);width:100%;color:var(--text-soft);background:#fff;border-radius:8px;padding:8px;font-size:12.5px}.reset-btn:hover{background:#f7f8fb}.demo-note{color:var(--muted);text-align:center;margin:10px 0 0;font-size:11px}.main{flex-direction:column;display:flex;overflow:hidden}.topbar{border-bottom:1px solid var(--border);background:#fff;flex:none;align-items:center;gap:12px;height:56px;padding:0 18px;display:flex}.topbar-spacer{flex:1}.demo-badge{color:var(--amber);background:#fff4e0;border:1px solid #f3dba8;border-radius:999px;padding:5px 11px;font-size:12px;font-weight:700}.collapse-btn{font-size:18px}.icon-btn{color:var(--text-soft);background:0 0;border:none;border-radius:8px;width:32px;height:32px;font-size:15px}.icon-btn:hover{background:#f3f5fa}.content{flex:1;padding:24px;overflow-y:auto}.screen{flex-direction:column;gap:18px;max-width:1180px;margin:0 auto;display:flex}.screen-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;display:flex}.screen-head h1{letter-spacing:-.4px;margin:0;font-size:22px}.muted{color:var(--muted);margin:4px 0 0;font-size:13px}.head-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.btn{border:1px solid var(--border-strong);color:var(--text);background:#fff;border-radius:9px;padding:9px 15px;font-size:13.5px;font-weight:600}.btn:hover{background:#f7f8fb}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark)}.link-btn{color:var(--brand);background:0 0;border:none;border-radius:6px;padding:4px 6px;font-size:13px;font-weight:600}.link-btn:hover{background:var(--brand-soft)}.link-btn.danger{color:var(--red)}.link-btn.danger:hover{background:#fdecea}.kpi-grid{grid-template-columns:repeat(4,1fr);gap:14px;display:grid}.kpi-grid-3{grid-template-columns:repeat(3,1fr)}.kpi-card{border:1px solid var(--border);box-shadow:var(--shadow);border-left:4px solid var(--brand);background:#fff;border-radius:14px;padding:16px 18px}.kpi-blue{border-left-color:var(--brand)}.kpi-amber{border-left-color:var(--amber)}.kpi-red{border-left-color:var(--red)}.kpi-green{border-left-color:var(--green)}.kpi-label{color:var(--text-soft);font-size:12.5px;font-weight:600}.kpi-value{letter-spacing:-.6px;margin:6px 0 3px;font-size:25px;font-weight:800}.kpi-sub{color:var(--muted);font-size:12px}.card{border:1px solid var(--border);box-shadow:var(--shadow);background:#fff;border-radius:14px;overflow:hidden}.card-head{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:15px 18px;display:flex}.card-head h2{margin:0;font-size:15px;font-weight:700}.card-head .muted{margin:0}.table-wrap{overflow-x:auto}.data-table{border-collapse:collapse;width:100%;font-size:13.5px}.data-table th,.data-table td{text-align:left;white-space:nowrap;border-bottom:1px solid var(--border);padding:11px 14px}.data-table thead th{color:var(--text-soft);background:#fafbfd;font-size:12.5px;font-weight:600}.data-table tbody tr:hover{background:#fafbff}.data-table tfoot td{border-top:2px solid var(--border-strong);background:#fafbfd;font-size:13.5px}.data-table .num{text-align:right;font-variant-numeric:tabular-nums}.data-table .strong,.strong{font-weight:700}.data-table .neg{color:var(--red)}.data-table .mono,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px}.row-actions{text-align:right}.row-actions .link-btn{margin-left:6px}.chip{color:var(--text-soft);background:#eef1f7;border-radius:999px;padding:3px 9px;font-size:12px;font-weight:600;display:inline-block}.badge{border-radius:999px;padding:3px 10px;font-size:12px;font-weight:700;display:inline-block}.badge-pending{color:var(--amber);background:#fdeee0}.badge-settled{background:var(--brand-soft);color:var(--brand-dark)}.badge-paid{color:var(--green);background:#e4f6ec}.empty{text-align:center;color:var(--muted);padding:32px 18px;font-size:13.5px}.banner{border-radius:9px;margin:0 18px 16px;padding:10px 14px;font-size:13px}.banner-warn{color:var(--amber);background:#fdf3e2;border:1px solid #f3dba8}.search{border:1px solid var(--border-strong);border-radius:8px;min-width:240px;padding:8px 12px;font-size:13.5px}.search:focus,input:focus,select:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}.collect-bar{flex-wrap:wrap;align-items:flex-end;gap:18px;padding:18px;display:flex}.inline-field{color:var(--text-soft);flex-direction:column;gap:5px;font-size:12.5px;font-weight:600;display:flex}.inline-field input{border:1px solid var(--border-strong);color:var(--text);border-radius:8px;padding:8px 12px;font-size:13.5px}.toggle{color:var(--text-soft);-webkit-user-select:none;user-select:none;align-items:center;gap:8px;font-size:13.5px;font-weight:600;display:flex}.toggle input{width:16px;height:16px;accent-color:var(--brand)}.filter-bar{flex-wrap:wrap;gap:8px;display:flex}.pill{border:1px solid var(--border-strong);color:var(--text-soft);background:#fff;border-radius:999px;padding:7px 16px;font-size:13px;font-weight:600}.pill-active{background:var(--brand);border-color:var(--brand);color:#fff}.form-grid{grid-template-columns:1fr 1fr;gap:14px;display:grid}.form-grid label{color:var(--text-soft);flex-direction:column;gap:6px;font-size:12.5px;font-weight:600;display:flex}.form-grid input,.form-grid select{border:1px solid var(--border-strong);color:var(--text);border-radius:8px;padding:9px 12px;font-size:14px}.form-error{color:var(--red);background:#fdecea;border-radius:8px;margin-bottom:14px;padding:9px 13px;font-size:13px}.modal-overlay{z-index:50;background:#141c306b;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:#fff;border-radius:14px;width:100%;max-width:540px;overflow:hidden;box-shadow:0 20px 60px #121c3347}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 18px;display:flex}.modal-header h3{margin:0;font-size:16px}.modal-header-error{background:#fdecea}.modal-header-error h3{color:var(--red)}.modal-body{padding:18px}.modal-footer{border-top:1px solid var(--border);background:#fafbfd;justify-content:flex-end;gap:8px;padding:14px 18px;display:flex}.error-popup{align-items:flex-start;gap:14px;display:flex}.error-icon{color:var(--red);font-size:26px}.error-popup p{margin:0 0 6px}.error-code{color:var(--muted);font-family:ui-monospace,monospace;font-size:12px}.trend-chart{width:100%;height:auto;padding:14px 18px 6px;display:block}.chart-axis-label{fill:var(--muted);font-size:10.5px}.toast-stack{z-index:60;flex-direction:column;gap:9px;display:flex;position:fixed;bottom:22px;right:22px}.toast{color:#fff;background:#1b2333;border-radius:10px;max-width:360px;padding:11px 16px;font-size:13.5px;font-weight:600;animation:.18s toast-in;box-shadow:0 8px 24px #121c3340}.toast-success{background:#1f7a4d}.toast-error{background:#b53a30}.toast-info{background:#2c3a55}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (width<=980px){.kpi-grid{grid-template-columns:repeat(2,1fr)}.form-grid{grid-template-columns:1fr}}@media (width<=720px){.app-shell{grid-template-columns:0 1fr}.sidebar{z-index:40;width:244px;height:100vh;transition:transform .2s;position:fixed;transform:translate(-100%);box-shadow:0 10px 40px #121c3333}.app-shell:not(.collapsed) .sidebar{border-right:1px solid var(--border);transform:translate(0)}.kpi-grid,.kpi-grid-3{grid-template-columns:1fr}.content{padding:16px}}