:root{
  --bg:#f4f3f0; --surface:#ffffff; --surface-2:#faf9f7; --border:#e1ded7;
  --fg:#241f1a; --fg-muted:#6b655c; --fg-faint:#9b948a;
  --accent:#8c2f2f; --accent-fg:#ffffff; --accent-soft:#f4e3e1;
  --success:#2f6b4f; --success-soft:#e3efe8;
  --warning:#9a6a12; --warning-soft:#f6ecd9;
  --danger:#b3261e; --danger-soft:#fbe4e2;
  --font-ui:'IBM Plex Sans',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#1b1815; --surface:#242019; --surface-2:#2a251e; --border:#3a342a;
    --fg:#f1ede6; --fg-muted:#b5ada0; --fg-faint:#827a6c;
    --accent:#e08578; --accent-fg:#1b1815; --accent-soft:#3a251f;
    --success:#7fcba3; --success-soft:#1e3327;
    --warning:#e3b65c; --warning-soft:#3a2e13;
    --danger:#f0948c; --danger-soft:#3d201d;
    color-scheme: dark;
  }
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--fg);font-family:var(--font-ui)}

.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:32px;width:100%;max-width:320px;text-align:center}
.login-card h1{font-size:18px;margin:0 0 6px}
.login-card .sub{color:var(--fg-muted);font-size:13px;margin:0 0 18px}
.login-card input{width:100%;font-family:var(--font-ui);font-size:14px;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--surface-2);color:var(--fg);margin-bottom:12px}
.login_err{color:var(--danger);font-size:12.5px;min-height:16px;margin:8px 0 0}

.app{display:flex;min-height:100vh}
.rail{width:220px;flex:none;background:var(--surface);border-right:1px solid var(--border);
  padding:20px 14px;display:flex;flex-direction:column;gap:2px;position:sticky;top:0;height:100vh;overflow-y:auto}
.rail-spacer{flex:1}
.brand{font-weight:700;font-size:15px;letter-spacing:.2px;margin:4px 6px 18px}
.brand span{display:block;font-weight:400;font-size:11px;color:var(--fg-muted);margin-top:2px}
.navbtn{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:7px;border:none;
  background:transparent;color:var(--fg-muted);font-family:var(--font-ui);font-size:13.5px;font-weight:500;
  cursor:pointer;text-align:left;width:100%}
.navbtn:hover{background:var(--surface-2);color:var(--fg)}
.navbtn.active{background:var(--accent-soft);color:var(--accent)}
.navbtn .dot{width:5px;height:5px;border-radius:50%;background:currentColor;opacity:.5;flex:none}
main{flex:1;min-width:0;padding:28px 32px}
.view{display:none}
.view.active{display:block}
h1{font-size:19px;margin:0 0 3px;font-weight:700}
.sub{color:var(--fg-muted);font-size:13px;margin:0 0 22px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:11px;padding:20px}
.card + .card{margin-top:16px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:5px;min-width:0;flex:1}
label{font-size:11.5px;font-weight:600;color:var(--fg-muted);text-transform:uppercase;letter-spacing:.3px}
input,select,textarea{font-family:var(--font-ui);font-size:13.5px;padding:8px 10px;border-radius:7px;
  border:1px solid var(--border);background:var(--surface-2);color:var(--fg);width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
button{font-family:var(--font-ui);cursor:pointer}
.btn{background:var(--accent);color:var(--accent-fg);border:none;border-radius:7px;padding:9px 16px;
  font-size:13px;font-weight:600}
.btn:hover{filter:brightness(1.06)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--border)}
.btn.ghost:hover{background:var(--surface-2)}
.btn.small{padding:6px 11px;font-size:12px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.3px;color:var(--fg-muted);
  font-weight:600;padding:8px 10px;border-bottom:1px solid var(--border)}
td{padding:9px 10px;border-bottom:1px solid var(--border);vertical-align:top}
tr:last-child td{border-bottom:none}
.tbl-wrap{overflow-x:auto;border-radius:9px;border:1px solid var(--border)}
.tbl-wrap table{border:none;border-radius:0}
.pill{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:99px;font-size:11.5px;font-weight:600}
.pill.open{background:var(--warning-soft);color:var(--warning)}
.pill.billed{background:var(--success-soft);color:var(--success)}
.empty{padding:40px 20px;text-align:center;color:var(--fg-faint);font-size:13px}
.toolbar{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-bottom:14px;flex-wrap:wrap}
.item-row{display:grid;grid-template-columns:70px 1fr 90px 100px 32px;gap:8px;align-items:end;margin-bottom:8px}
.item-row .rm{border:none;background:var(--danger-soft);color:var(--danger);border-radius:7px;height:34px;align-self:end}
.total-line{display:flex;justify-content:space-between;padding:6px 0;font-size:13px}
.total-line.grand{font-weight:700;font-size:15px;border-top:1px solid var(--border);margin-top:6px;padding-top:10px}
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;align-items:center;justify-content:center;z-index:50;padding:16px}
.modal-bg.show{display:flex}
.modal{background:var(--surface);border-radius:12px;padding:22px;width:100%;max-width:420px;max-height:88vh;overflow-y:auto}
.modal h2{margin:0 0 14px;font-size:15px}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--fg);color:var(--bg);
  padding:10px 18px;border-radius:8px;font-size:13px;z-index:100;opacity:0;pointer-events:none;transition:opacity .2s}
.toast.show{opacity:1}
.note{font-size:12px;color:var(--fg-muted);line-height:1.5;background:var(--surface-2);border-radius:8px;padding:10px 12px}
.checkrow{display:flex;align-items:center;gap:8px}
.checkrow input{width:auto}
.section-title{font-size:13px;font-weight:600;margin:0 0 10px;display:flex;align-items:center;gap:8px}
.badge-count{background:var(--surface-2);color:var(--fg-muted);font-size:11px;padding:1px 7px;border-radius:99px;font-weight:600}
@media (max-width:760px){
  .app{flex-direction:column}
  .rail{width:100%;height:auto;position:static;flex-direction:row;overflow-x:auto;padding:10px}
  .brand,.rail-spacer{display:none}
  .navbtn{flex:none;white-space:nowrap}
  main{padding:18px 16px}
  .item-row{grid-template-columns:1fr;gap:4px;background:var(--surface-2);padding:10px;border-radius:8px;margin-bottom:10px}
}